Dross recovery is defined as a connected process. Feed temperature, metallic content, oxidation, transfer time and cooling method influence both metal recovery and the downstream load.
Typical process route # Transfer hot dross from the furnace area. Separate recoverable molten aluminum. Cool residue under controlled conditions. Crush, screen and mill the cooled fraction. Classify, collect and package the output. System modules # Integrated or conventional dross-processing main machine Mobile fork pot, transfer and enclosed tipping mechanism Rapid cooling and primary screening Bucket elevators, intermediate storage and controlled feeding Ball milling and secondary high-speed screening Local extraction, pulse-jet filtration and classified collection Electrical control, equipment interlocks and safety guarding Process boundary and conditions # System boundaryHot-dross processing, molten-metal separation, controlled cooling, size reduction, classification, conveying, collection and fume-extraction interfaces. Material pathMolten-aluminum outlet, dross discharge and mechanical transfer between stages are defined from plant elevations and downstream destinations. Typical grading configurationsCoarse and medium metallic fractions; 20–30 mesh and 80–100 mesh dross fractions. Actual cuts depend on the configured screen and process target. InstallationConfigurable for new plants or existing-shop upgrades, subject to layout, foundations and environmental interfaces. Acceptance basis: system configuration and acceptance methods are defined from dross composition, feed temperature, batch rhythm, required fractions and operating boundary. Recovery is evaluated through the project material balance and agreed test method.
The line is configured around billet alloy, diameter and length range, cut schedule, required throughput and the way finished billets enter homogenizing, extrusion, packing or warehouse logistics.
Typical operating sequence # Store, align and separate incoming billets. Load and feed to the cut position. Saw to the confirmed length schedule. Mark billets and recover generated chips. Convey, sort and stack finished billets. Configurable modules # Chain storage, arc alignment and billet separation Rubber-coated V rollers and servo cut-to-length feeding Enclosed modular saw frame with oil-immersed cutting spindle Minimum-quantity lubrication and head/tail collection Pin, laser or multi-pin identification Chip extraction, centralized collection and briquetting Long-, short- or homogenized-billet stacking PLC sequence control, safety interlocks and production interfaces Controls and system boundary # Line arrangementSelect single- or multi-billet sawing from the billet mix, billets per cycle and downstream logistics, then calculate the cycle time of each station. Length positioningControlled feeding with encoder feedback; datum, tolerance and acceptance method are defined from billet condition and project requirements. Chip routeConfigure extraction, centralized collection, briquetting and downstream conveying from chip form, travel distance and remelt route. Control platformPLC sequence control and HMI coordinate station sensors, equipment interlocks, automatic operation and manual recovery. Marking optionsAutomatic pin, laser or multi-pin marking according to traceability requirements. Capacity calculation: required output is converted into cycle time and checked against billet diameter, batch mix, cuts per billet, handling distance, stacking pattern, shift schedule and equipment availability.
A dust collector is only one part of the system. Capture efficiency begins at the hood and depends on source position, thermal plume, enclosure, capture distance, duct resistance and the number of points operating at the same time.
System path # Capture dust and fumes close to the source. Convey through balanced branch and main ducts. Reduce temperature or settle coarse particles where required. Filter through a pulse-jet baghouse. Discharge, convey and package collected dust. Engineering scope # Hoods and partial enclosures for furnace doors, dross, crushing, screening and sawing points Branch and main duct routing with resistance balancing Gravity settling or temperature-control stages where the process requires them Pulse-jet baghouse, filter media, hopper and rotary discharge equipment Induced-draft fan, compressed air, differential-pressure monitoring and interlocks Maintenance platforms, inspection access and collected-dust handling Design inputs # Dust dataComposition, particle size, concentration, temperature, moisture, explosibility and corrosiveness. Operating pointsSource position, hood arrangement, capture distance and simultaneous operating combinations. System conditionsExisting duct route, available pressure, compressed air, discharge method and maintenance access. Compliance basisProject location, applicable emission limit and agreed acceptance test method. Pre-treatment stage: gravity settling or another pre-separation stage is selected from particle size, concentration, temperature, duct velocity and filter loading. A node value from one project is not used as a product-wide performance statement.
Supporting equipment must match the melt, operating temperature, batch capacity, transfer route and working method. Hengliang Lankang configures these units as part of the casting process and plant logistics.
Supporting scope # Melt treatmentAutomatic refining tanks, wire feeders, online degassing, filtration and process consumables.
Transfer and pouringTransfer ladles, pouring ladles, launders, casting tables and related handling equipment.
