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Dross Skim Pan — Single Chamber Dimensions and Model Range

Dross Skim Pan — Single Chamber Configurations and Model Range

SMI single chamber dross skim pans are designed for efficient dross collection and skimming from molten aluminium surfaces in primary and secondary casthouse operations. Nine standard configurations cover a capacity range from 0.21 m³ to 0.90 m³. All models are manufactured from SMI’s proprietary material formulation — optimised for rapid cooling rate and thermal shock resistance in continuous casthouse service. Custom dimensions and capacities are available to customer drawing or specification.

SMI single chamber dross skim pan model range dimensions and capacities
SMI single chamber dross skim pan — standard model range dimensions and capacities

Standard Model Range — Single Chamber Skim Pan

Model Number Dimensions L×W×H (mm) Weight (kg) Capacity (m³)
SMI-HT-120040 1950 × 1320 × 610 2,023 0.60
SMI-HT-130025 1950 × 1320 × 650 2,047 0.72
SMI-HT-130010T 1300 × 1365 × 475 1,207 0.40
SMI-HT-120036T 1200 × 1200 × 430 883 0.21
SMI-HT-140029 1300 × 1100 × 660 1,658 0.46
SMI-HT-170041 2286 × 1473 × 533 2,820 0.90
SMI-HT-170091 1480 × 1150 × 660 1,730 0.50
SMI-HT-190050 2100 × 1100 × 525 2,210 0.54
SMI-HT-170081 2032 × 1067 × 533 1,680 0.42

All dimensions are in millimetres. Weights and capacities are nominal — actual values may vary depending on final design configuration. Custom dimensions and capacities available on request.

About Single Chamber Skim Pans

The single chamber dross skim pan provides a single open-top collection volume for dross skimmed from the molten aluminium surface during melting and refining. The structural base incorporates ventilation geometry — supporting the pan during handling and transfer while allowing air circulation to assist cooling after dross collection. The single chamber configuration is the standard choice for most casthouse skimming operations where dross fraction separation is not required.

Material

All SMI single chamber skim pans are manufactured from SMI’s proprietary material formulation — developed over 30 years of continuous supply to aluminium casthouses worldwide. The formulation delivers rapid cooling rate and thermal shock resistance — the two performance requirements that determine service life in high-cycle casthouse environments. Alternative material options are available for specific operating conditions on request.

← Back to Dross Skim Pan and Sow Mold Overview | Contact SMI — Skim Pan Enquiry →

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Spiral Bevel Gear

Spiral Bevel Gear
Spiral Bevel Gear

Spiral bevel gear is a common part of mechanical transmission, but also an indispensable part of mechanical equipment, relatively difficult and complex process manufacturing, so we use advanced alloy steel 18CrNiMo7-6, more robust and durable, so that its precision level reached DIN3965 5-10.

Spiral bevel gear as the most important part of the transmission device, its quality and performance has been a point of great concern to people, for the traditional spiral umbrella design, with large noise, low efficiency, short life and many other problems, often affect the normal use of mechanical equipment. In view of this situation, the materials used and the design process of the gear have been greatly improved. Our spiral bevel gear adopts high grade alloy steel materials and manufacturing process, so that the transmission efficiency, noise control, service life and other aspects have been greatly changed, but also improve the performance of mechanical equipment and operation stability, for the user with a better experience.

Although Spiral bevel gears are widely used in mechanical equipment, due to high transmission efficiency, transmission stability, good carrying capacity and compact design structure, the equipment is more efficient during operation, and it also has a large savings in energy and space. This is also very high requirements for the manufacturing process, and it is very complex, but the precision of the product is also very high. The requirements for the manufacturing process are also very high and complex, with the following steps:

Design: Before processing, to determine the module of the gear, the number of gear, gear shape, pressure Angle parameters, etc., but also consider the functional requirements of the gear, transmission ratio, working environment and other factors.
Roughing: The first gear roughing, including turning, milling and other processes. At this stage, the shape of the gear is mainly processed into a preliminary shape.
Heat treatment: Heat treatment of the gear after rough machining, usually including quenching and tempering. Heat treatment can increase the hardness and strength of gear and improve its mechanical properties.
Precision machining: After heat treatment, precision machining of the gear, including grinding, hobbing and other processes. This step improves the precision and surface quality of the gear.
Detection and quality control: After the spiral bevel gear is processed, strict detection and quality control should be carried out. This includes checking the size, profile, surface quality, etc. of the gears to ensure that they meet design standards and customer requirements.

Spiral bevel gear manufacturing is more complex, so the need for precision equipment and technology, suitable processing methods and strict quality control, in order to produce high-quality gear to meet the real needs of customers.

In conclusion, choosing spiral bevel gear, quality is necessary, but also consider its performance, which will affect transmission efficiency and stability, carrying capacity, service life, SMI has nearly 30 years of customized processing experience, if you are interested, welcome to contact our professional team here.

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Dross Press Cooling Head

Dross Press Cooling Head — Aluminum Dross Press Component Supply

The dross press cooling head is the component that determines how much aluminum you actually recover from hot dross. Aluminum dross oxidises continuously after leaving the furnace — the cooling head must contact the dross quickly, seal tightly against the pan walls, and extract heat fast enough to arrest that oxidation before free metal is lost irreversibly.

SMI manufactures dross press cooling heads as a standalone supply item and as part of complete aluminum dross press systems. As an aluminum recycling systems integrator with in-house material development, casting manufacture and on-site installation capability, SMI supplies cooling heads not simply as cast components to a drawing — but as engineered parts of a complete dross management solution. Cooled and uncooled variants are available across all geometries and sizes, matched to any dross pan or press frame currently in service.

Cooled and Uncooled Configurations

SMI dross press cooling heads are available in cooled and uncooled configurations. The appropriate variant is determined by the specific operational requirements of each installation — furnace type, dross generation rate, existing cooling infrastructure, press cycle objectives and overall system design. Cooled heads incorporate an integrated forced-cooling circuit and are the standard recommendation where maximising metal recovery and minimising oxidation time are the primary objectives. Uncooled heads are available for installations where the process configuration, existing infrastructure or operational parameters make active cooling in the head unnecessary. Both configurations are manufactured from the same SMI ATM series castable and are available across the full range of geometries. SMI application engineers will confirm the most suitable configuration based on a review of process parameters at the enquiry stage.

How the Cooling Head Determines Your Recovery Rate

The dross press works on a single principle: compress and cool hot dross as quickly as possible after skimming, before oxidation converts free metal into oxide. The cooling head is where that principle either succeeds or fails. Four variables determine performance in practice:

  • Seal geometry — the head profile must match the dross pan walls precisely. A poor fit allows dross to escape under pressure, breaks the thermal seal, and extends cooling time. Recovery loss from a worn or mismatched head is continuous and largely invisible until a direct measurement is taken.
  • Active heat extraction — forced cooling through an integrated circuit in the head body produces the cooling rates needed to arrest oxidation effectively. Passive ambient cooling is not sufficient for high-throughput operations.
  • Thermal shock resistance — the head enters dross at 700°C+ and is then cooled, dozens of times per shift. Material that cracks, spalls or deforms under this cycling degrades both seal geometry and cooling performance simultaneously — progressively and invisibly until failure.
  • Dimensional stability over service life — wear and thermal deformation on the mating face progressively degrade the head-to-pan seal. Material choice and casting geometry determine how long a head remains dimensionally effective before replacement is required.

SMI cooling heads are engineered around all four of these failure modes. The design objective is consistent, measurable performance across the full service life of the head — not only at initial installation.

Design and Manufacturing

Proprietary Anti-Thermal-Shock Castable — SMI ATM Series

The cooling head material is the central engineering decision and the point where most generic or cost-reduced heads fail prematurely. A dross press cooling head requires three material properties simultaneously: high thermal conductivity in the cooling zone to extract heat efficiently; low thermal expansion to resist cracking under repeated thermal shock; and abrasion resistance against the hard aluminum oxide particles present in all dross types. Standard refractory grades are optimised for one or two of these properties — not all three together.

SMI’s ATM series material is developed and produced in-house. The formulation is proprietary. Independent third-party test data and material samples are available to qualified buyers on request. This is the same material specification used across SMI’s full range of casthouse consumables — a production-grade specification with a 30-year operational record in aluminum casthouses across multiple continents.

Cast-In Cooling Circuit

The internal cooling channels in an SMI cooled head are formed during the casting process as part of the original geometry — not machined in afterward. Machined-in channels create walls of non-uniform thickness at the cooling zone, producing stress concentration points that initiate cracking under thermal cycling. Cast-in channels maintain consistent section thickness throughout the head body, producing more uniform heat extraction and longer dimensional stability under service conditions. The cooling circuit interfaces with the press cooling skid via standardised quick-connect fittings, allowing head replacement without draining the cooling loop.

Pan-Matched Geometry

SMI supplies cooling heads in circular, rectangular and custom cross-sections. Where a customer has an existing pan set, SMI manufactures replacement heads to match the pan geometry exactly. Where a complete new pan-and-head set is required, the two are designed together to optimise the seal profile and heat transfer path as a matched system. Dimensional tolerances on mating surfaces are held to ±1 mm. The pan-and-head combination is the single configuration decision with the largest impact on achievable in-house recovery rate — SMI designs and supplies both as a matched set for this reason.

Adaptation to Third-Party Press Installations

SMI cooling heads can be adapted to work with third-party and competitor press installations. This is a relevant supply option for operations with serviceable press frames where heads have worn, cracked or degraded, and full system replacement is not the preferred route.

A dimensional match on the head body and mating face is the starting point, not the complete solution. Hydraulic output, control system parameters, cycle timing and commissioning requirements vary significantly between press manufacturers and models — these are not visible in the physical dimensions of the head alone. SMI conducts a technical review of the existing press system specifications before confirming the adaptation scope and supply terms. This engineering review is SMI’s standard process for delivering a qualified, system-compatible solution.

The full delivery scope for third-party adaptations — engineering review, component manufacture, on-site installation and commissioning — is available as a single-source engagement. Buyers are requested to provide press equipment specifications, hydraulic system data and available press documentation at the enquiry stage.

Dross Type Coverage

Dross composition and behaviour under compression varies significantly by furnace type, alloy, flux practice and holding time. SMI cooling heads are specified and validated for the full range of industrially relevant dross and slag types:

  • Dry dross — primary smelter, low oxide content, high free metal fraction
  • Wet dross — holding furnace, alloying additions, variable metal content
  • Black dross — salt-flux secondary smelting, elevated chloride content
  • White dross — secondary smelter pre-treated, lower free metal content
  • Salt slag — rotary furnace with salt flux, requires specific head geometry and cooling duty
  • Rotary furnace slag — high temperature, lower aluminum content, variable composition

For dross with unusual characteristics — very high free metal, atypical particle size distribution, elevated impurity content — SMI application engineers review the process parameters and recommend the correct head geometry, cooling configuration and material grade before order placement.

Operational Benefits

Measurable Improvement in In-House Metal Recovery

Faster cooling means less oxidation between pressing cycles. Tighter compaction means fewer voids where trapped metal remains inaccessible. In-house recovery with a correctly configured pan-and-head system typically reaches 45–70%, substantially above unpressed or air-cooled dross handling. One practical constraint: if a dross pan sits for more than 15 minutes with hot dross before reaching the press, thermiting has already progressed significantly. Adequate press capacity relative to dross generation rate is a prerequisite — the cooling head design cannot compensate for insufficient press throughput.

Automated Cycle — Reduced Operator Exposure

The dross press cycle is fully programmable and automated: the head descends, holds at set pressure, cooling is confirmed, and the head retracts. No manual intervention is required during pressing. This removes operator exposure to radiant heat and fume, eliminates skill variability in dross handling, and reduces the specialist knowledge required for day-to-day operation and maintenance.

Schedulable Consumable Cost

Replacement heads are a known, foreseeable consumable cost — not an unplanned capital event. SMI ATM series material and robust casting process support extended and predictable service life under sustained thermal cycling. Replacement heads for common press formats are held in stock; non-standard and legacy press frame heads are manufactured on short lead times. Quality documentation — dimensional inspection reports, material certification, hardness test data — is supplied as standard with every order.

Specifications at a Glance

Parameter Details
Material SMI ATM series — proprietary anti-thermal-shock castable, 30+ year production record
Configurations Cooled (integrated forced-cooling circuit) and uncooled — both available in all geometries, confirmed by application review
Cooling system (cooled variant) Cast-in internal circuit; forced cooling; quick-connect interface to press cooling skid
Available geometries Circular, rectangular, custom cross-section — new design or matched to existing pan
Press frame compatibility SMI press systems; third-party and competitor frames subject to engineering review and system specification confirmation
Dross types covered Dry, wet, black, white, salt slag, rotary furnace slag
Mating face tolerance ±1 mm on pan-matched sealing surfaces
Typical in-house recovery 45–70% with matched pan-and-head set, correctly configured
Quality documentation Dimensional inspection, material certification, hardness test data — standard with every order
Delivery scope Component supply only; matched pan-and-head set; or complete system including engineering review, installation and commissioning

Global Casthouse Supply — Who Uses SMI

SMI has been supplying aluminum recycling systems and casthouse consumables since 1996, with over 30 years of manufacturing and export experience across legal entities in mainland China, Hong Kong, Southeast Asia, Europe and the United States.

SMI casthouse consumables — including dross press cooling heads, dross pans, sow molds, drain sow molds and ingot molds — are in active service at primary aluminum smelters across the Middle East, Europe, India, North America and Asia-Pacific, including multiple operations within the world’s highest-output primary aluminum production groups. Global adoption of SMI dross pans, sow molds and ingot molds continues to accelerate as smelters and recycling operations standardise on SMI as their casthouse consumable supplier of choice.

All supply relationships are subject to confidentiality agreements. Reference accounts are available to qualified buyers under appropriate confidentiality terms.

Application Sectors

  • Primary aluminum smelters
  • Secondary aluminum smelters and refineries
  • Aluminum rod, billet and bar plants
  • Metal recycling and non-ferrous scrap processing plants
  • Aluminum die casting and foundry operations
  • Magnesium and other non-ferrous metal recovery operations

Related Products — Complete Dross Management from SMI

Request a Quotation or Technical Consultation

To specify the correct cooling head configuration for your operation, please provide the following when contacting SMI:

  • Press frame make, model and existing head dimensions (drawing, dimensional sketch or physical sample)
  • Dross pan design — drawing reference or internal dimensions
  • Dross type and approximate monthly dross volume (tonnes per month)
  • Operation type: primary smelter / secondary smelter / recycling plant
  • For third-party press installations: hydraulic system specifications and available press documentation

SMI will respond with a written technical recommendation and commercial proposal. Contact SMI — Dross Press Cooling Head Enquiry →

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7-9kgs Small Standard Ingot Molds | Moldes de lingotes estándar pequeños de 7-9kgs

Small Standard Ingot Molds — 7 to 9kg Aluminium Ingot Casting

SMI manufactures small standard ingot molds for casting 7 to 9kg aluminium ingots — supplied to primary smelters, secondary remelters, aluminium rod plants and metal processing facilities requiring compact, high-cycle ingot casting tooling. All molds are produced to customer drawing or specification, with surface treatment options available to suit different operating environments and handling requirements.

Small standard ingot mold three cavity — natural steel finish, manufactured to customer ingot weight and dimension specificationpequeños de 7-9kgs)
Small standard ingot mold three cavity — protective coating finish, same casting geometry available with or without surface treatment to customer requirementCoatingpequeños de 7-9kgs)

Product Description

The SMI small standard ingot mold is a three cavity long-form casting tool — designed for efficient, repeatable casting of small aluminium ingots in batch production environments. The three cavity configuration allows three ingots to be cast per pour, increasing throughput and reducing cycle time compared with single cavity alternatives. Cavity geometry is optimised for consistent ingot weight, clean release and stable stacking after casting.

Two surface finish options are available as shown in the gallery above — natural steel finish for standard service conditions, and protective coating finish for environments requiring enhanced corrosion resistance or specific handling requirements. Both configurations are produced from the same casting geometry to customer weight and dimension specification.

Key Features

  • Three cavity configuration — three ingots cast per pour, increasing production throughput and reducing cycle time
  • Consistent ingot weight — cavity geometry engineered for repeatable 7 to 9kg ingot output per cavity
  • High thermal resistance — material selection and wall geometry optimised for resistance to repeated thermal cycling in continuous casting service
  • Surface finish options — natural steel finish or protective coating to customer requirement
  • Custom dimensions — cavity dimensions, overall mold length and weight range available to customer specification
  • Clean release geometry — draft angles and internal cavity profile designed for consistent ingot release without sticking or deformation

Materials and Application

SMI small standard ingot molds are produced in material grades selected to the metal being cast and the operating temperature of the customer’s casting process:

  • Aluminium ingot casting — standard material grade optimised for aluminium service temperatures and thermal cycling conditions
  • Copper and copper alloy ingot casting — higher temperature material grades available for the elevated service temperatures of copper casting operations
  • Tin and lead ingot casting — material selection to the lower temperature requirements of tin and lead casting applications

SMI also manufactures ingot molds for other non-ferrous metal casting applications — contact SMI to discuss material selection and mold geometry for your specific casting requirements.

Specifications

Parameter Standard Custom
Ingot weight per cavity 7–9 kg Other weights available
Cavity configuration Three cavity long form Alternative configurations available
Surface finish Natural steel or protective coating To customer requirement
Material To casting metal and temperature specification Customer-specified grade available
Lead time Approximately 4–6 weeks from order confirmation Subject to order volume
Minimum order Contact SMI —
Shipping Ocean freight 1×20GP DDP available on request

Ordering Information

To select the appropriate small ingot mold configuration for your casting operation, the following information is required at enquiry stage:

  • Metal being cast — aluminium, copper, tin, lead or other
  • Required ingot weight per cavity — kg
  • Required ingot dimensions — length, width, height
  • Casting method — ladle pour, tilting furnace or other
  • Annual production volume — ingots per year
  • Surface finish preference — natural steel or protective coating
  • Any special handling or stacking requirements

بالعربية — قوالب السبائك الصغيرة القياسية لصب الألومنيوم

تقوم SMI بتصنيع قوالب السبائك الصغيرة القياسية لصب سبائك الألومنيوم من 7 إلى 9 كجم — تكوين ثلاث تجاويف، متوفرة بتشطيب فولاذي طبيعي أو طلاء واقي. متاحة أيضاً لصب سبائك النحاس والقصدير والرصاص. الأبعاد المخصصة وفق مواصفات العميل. وقت التسليم تقريباً 4–6 أسابيع. للاستفسار، تواصل مع فريق SMI →

En Español — Moldes de Lingotes Estándar Pequeños para Fundición de Aluminio

SMI fabrica moldes de lingotes estándar pequeños para la colada de lingotes de aluminio de 7 a 9 kg — configuración de tres cavidades en formato largo, disponibles con acabado de acero natural o recubrimiento protector. También disponibles para la colada de lingotes de cobre, estaño y plomo. Dimensiones personalizadas según especificación del cliente. Plazo de entrega aproximadamente 4–6 semanas. Para consultas, contacte al equipo de SMI →

Related Products — SMI Aluminium Casting Consumables

Request a Quotation

SMI will respond with a written technical assessment and commercial proposal within two working days of receiving your enquiry. Contact SMI — Small Ingot Mold Enquiry →

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Trailer Winch – Durable Hand Crank – Hand Winch with Cable or Wire-rope

Hand Crank Trailer Winch — Standard and Custom Configurations with Cable or Wire Rope

Hand crank winch — heavy-duty carbon steel body with zinc-plated finish, steel wire rope and load hook
Compact hand winch configuration — two-way ratchet, wire rope and hook, suitable for trailer and marine applications
Webbing strap with hook — standard accessory option for hand crank trailer winch, custom length and width available

SMI supplies hand crank trailer winches in standard configurations and fully customised specifications — manufactured from heavy-duty carbon steel with zinc-plated finish for corrosion resistance and long service life. Standard capacity range covers 1,200 lb to 3,500 lb, with custom load ratings, drum dimensions, cable length and material configurations available to meet specific application requirements.

Winch supply is one part of SMI’s broader capability in mechanical components and OEM manufacturing — a capability with established market presence in the United States and Japan. Custom configurations are available for OEM customers requiring specific dimensions, load ratings, surface treatments or cable/strap specifications.

Standard Features

Construction

Heavy-duty carbon steel body with zinc-plated finish — resistant to corrosion and suitable for outdoor and marine-adjacent environments. Solid construction designed for repeated load cycles in trailer, marine and industrial handling applications.

Capacity Range

Standard range: 1,200 lb to 3,500 lb cranking capacity. Custom load ratings outside this range are available — please specify required working load and safety factor at enquiry stage.

Two-Way Ratchet Mechanism

Fitted with a sturdy safety pawl allowing forward and reverse ratcheting. The ratchet mechanism prevents load slip during cranking and holds the load securely when the handle is released.

Cable or Wire Rope Options

Available with steel wire rope or webbing strap configurations depending on application. Cable length and diameter are customisable. Hook and attachment hardware included as standard.

Handle

Extended anti-slip handle for secure grip and comfortable operation under load. Handle length customisable for OEM applications.

Hand winch with cable drum — product and dimensional drawing, standard and custom configurations available
Upright handle hand winch configuration — engineering drawing showing key dimensions, OEM and custom specifications available
Heavy-duty winch mounting base plate — standard bolt pattern configuration, custom mounting available to customer specification

Custom and OEM Supply

SMI’s manufacturing capability in this product category extends well beyond standard catalogue configurations. Custom options available include:

  • Drum dimensions — diameter and width to suit specific cable capacity or installation envelope requirements
  • Load rating — working load and gear ratio specified to application requirement
  • Cable or strap — wire rope diameter and length, webbing strap width and length, hook type and rating
  • Mounting configuration — standard bolt-pattern base plate or custom mounting to suit specific trailer or equipment frame
  • Surface treatment — zinc plating, powder coating or other finishes to customer specification
  • Material — standard carbon steel or alternative material grades to customer specification
  • Branding — OEM branding and packaging available

OEM supply relationships in the United States and Japan markets are an established part of SMI’s mechanical components business. Enquiries from OEM customers are welcome at any volume level.

Gear and ratchet detail — two-way ratchet pawl mechanism prevents load slip during cranking and holds load when handle is released
Safety pawl engagement detail — robust ratchet mechanism allows forward and reverse cranking with secure load retention
Complete hand winch accessory configuration — winch body, strap, wire rope, base plate and handle, custom configurations and OEM packaging available
Extended anti-slip crank handle — custom handle length available for OEM applications

Typical Specifications

Parameter Standard Range Custom
Capacity 1,200 lb – 3,500 lb Available on request
Body material Heavy-duty carbon steel Alternative grades available
Surface finish Zinc-plated Powder coat and other finishes available
Cable type Steel wire rope or webbing strap Diameter, length and hook type customisable
Ratchet mechanism Two-way — forward and reverse —
Mounting Standard bolt-pattern base plate Custom mounting configuration available
OEM branding Available Packaging and labelling to customer spec

Applications

  • Trailer loading and securing — boat trailers, equipment trailers, flatbed trailers
  • Marine and dock applications — boat launching, mooring assist
  • Construction and industrial sites — equipment positioning, load handling
  • Vehicle recovery — pickup trucks, ATVs, utility vehicles
  • General industrial handling — wherever a compact, manually operated pulling or lifting device is required

Image Gallery — Component Detail

The gallery images above show standard product configurations, engineering dimensional drawings and component detail — gear mechanism, pawl assembly, mounting base plate, cable drum, wire rope and strap accessories. Custom configurations may differ from images shown.

Request a Quotation

To enquire about standard or custom hand winch supply, please provide the following:

  • Required capacity — working load in lb or kg
  • Cable or strap preference — wire rope or webbing, with length and diameter if known
  • Mounting requirements — standard base plate or custom configuration
  • Surface finish preference
  • Annual volume — units per year
  • OEM requirements — branding, packaging, labelling

SMI will respond with a written technical recommendation and commercial proposal. Contact SMI — Hand Winch Enquiry →

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Aluminium Dross Recycling Machine

Aluminium Dross Recycling Machine — Dross Press Systems for Aluminium Casthouses

An aluminium dross recycling machine is the operational term used across many aluminium casthouses for what engineers specify as an aluminium dross press — a hydraulic compression system that recovers free metal from hot aluminium dross at the point of generation, before oxidation converts recoverable aluminium into oxide waste.

SMI has been manufacturing and supplying aluminium dross recycling machines to primary smelters, secondary smelters and metal recycling operations worldwide for over 30 years. Equipment is supplied under the SMI brand, under OEM arrangements, or under the customer’s preferred brand identity — configuration, capacity and branding are all subject to customer specification. The image below shows one such installation, supplied to customer specification.

SMI Aluminium Dross Recycling Machine
Aluminium Dross Recycling Machine — hydraulic dross press with integrated cooling system, supplied to customer specification.

What the Machine Does — The Operational Reality

Hot aluminium dross skimmed from the furnace is not waste. It contains significant free metal — the exact proportion depends on furnace type, alloy, operating practice and how quickly the dross reaches the press after skimming. Every minute of delay between skimming and pressing allows continued oxidation, converting recoverable aluminium into aluminium oxide at a rate that represents a direct production loss on every cast.

The dross recycling machine addresses this at the source. The automated press cycle — hydraulic head descent, compression at controlled pressure, forced cooling through the integrated cooling circuit, head retraction — processes a full pan of hot dross in a single cycle. No manual intervention is required during pressing. The output is a dense aluminium block with significantly reduced oxide content, ready for return to the furnace or casting line.

In-house metal recovery with a correctly configured dross press system is typically 20–35%, depending on operational conditions. The variables that most affect recovery rate in practice are the time elapsed between skimming and pressing, the condition of the press head and dross pan as a matched set, and the dross generation characteristics of the specific furnace operation.

How SMI Supplies Dross Recycling Machines

Standard SMI-Branded Systems

SMI supplies aluminium dross press systems under the SMI brand in three standard capacity configurations — SMI40, SMI60 and SMI80 — processing 250–700 kg of dross per pressing cycle. Full technical specifications, hydraulic component details and delivery terms are covered on the Aluminum Dross Press product page.

OEM Supply

SMI manufactures dross press systems for supply under OEM arrangements — where the equipment is integrated into a customer’s own product line, system package or project supply. OEM customers receive the same manufacturing quality and engineering support as direct SMI-branded supply, with configuration, capacity, labelling and documentation adapted to the OEM customer’s requirements. NDA-based supply is standard practice for OEM engagements.

Custom-Branded and Customer-Specified Equipment

Where a customer operates under their own equipment brand, or has specific requirements for branding, colour, control system interface or documentation language, SMI accommodates these requirements as part of the supply specification. Custom-branded dross press systems have been supplied to aluminium operations across multiple regions — the equipment in service carries the customer’s identity; the engineering and manufacturing capability behind it is SMI’s.

Configured to Your Operation

No two casthouse installations are identical. SMI dross recycling machine configurations take into account the full operational context of each installation — furnace type and capacity, dross generation rate, material handling constraints, available utilities and the dross characteristics specific to each operation. The press head and dross pan combination is specified as a matched set for each installation, as this pairing has the largest single impact on achievable recovery rate.

Dross Press as Part of a Complete Recovery Line

The dross press is the first and most critical stage in aluminium dross recovery — but it is not the only stage. Pressed dross still contains residual metal in the form of fine aluminium particles within the oxide matrix. A complete recovery line processes this residual material through controlled cooling, ball mill crushing and multi-stage vibrating screen separation, producing three separated fractions: metal-rich particles returned to the furnace, intermediate material recycled through the press, and fine aluminium oxide powder for industrial resale.

SMI supplies the complete downstream processing line as well as the dross press stage. For operations building out their dross recovery capability in stages, individual equipment items — cooling unit, ball mill, screening system — can be added progressively. Details of the downstream processing equipment are covered on the Aluminum Dross Recycling Systems page.

Upgrade and Replacement Supply

For operations with existing dross press installations — whether SMI-supplied or from other manufacturers — SMI provides replacement and upgrade supply across the consumable and component range. The press head (cooling head) and dross pan set are the components that most directly determine ongoing recovery performance and are the most common upgrade focus in existing installations.

Where the press frame is serviceable but recovery performance has declined, targeted component replacement typically delivers a measurable improvement without the capital requirement of full system replacement. Third-party press frame adaptations are subject to engineering review before supply confirmation — hydraulic output, control parameters and commissioning requirements vary between press manufacturers and must be confirmed before a compatible replacement head can be specified.

Application Sectors

  • Primary aluminium smelters
  • Secondary aluminium smelters and refineries
  • Aluminium rod, billet and bar plants
  • Metal recycling and non-ferrous scrap processing plants
  • Aluminium die casting and foundry operations
  • OEM equipment integrators and aluminium plant system suppliers

Global Supply and Service

SMI has been supplying aluminium dross recycling machines and casthouse consumables since 1996, with over 30 years of manufacturing and export experience across legal entities in mainland China, Hong Kong, Southeast Asia, Europe and the United States. SMI dross press equipment is in active service at primary and secondary aluminium smelters across the Middle East, Europe, India, North America and Asia-Pacific, including multiple operations within the world’s highest-output primary aluminium production groups.

Equipment is supplied as complete systems with on-site installation and commissioning support. Replacement consumables — press heads, dross pan sets — are held in stock for common configurations and dispatched on short lead times. All supply relationships are subject to confidentiality agreements. Reference accounts are available to qualified buyers under appropriate confidentiality terms.

Related Products — Complete Dross Management from SMI

Request a Quotation or Technical Consultation

To discuss dross recycling machine requirements — standard SMI-branded systems, OEM supply, or custom-configured equipment — please contact SMI with the following information:

  • Operation type: primary smelter / secondary smelter / recycling plant / OEM integrator
  • Furnace type and approximate dross generation rate per shift
  • Dross type: dry / wet / black / white / salt / rotary furnace
  • Supply requirement: complete system / replacement components / OEM arrangement
  • Branding and documentation requirements if applicable

SMI will respond with a written technical recommendation and commercial proposal. Contact SMI — Aluminium Dross Recycling Machine Enquiry →