High-speed aluminum dross processing machine

The molten metal aluminum in the thermal dross generated from the melting furnace is recovered.
Using the thermite reaction of aluminum oxide (thermal dross) generated in the aluminum melting furnace, aluminum oxide (hot residual dross) and molten aluminum metal are separated by specific gravity through stirring of the vanes, and the aluminum molten metal is collected in the sow mold, and the residual dross is cooled and classified.
– Since the processing pot is mobile, all Operator has to do is skim the hot dross from the furnace into the pot and set it in the dross processing machine.

• Stirring efficiency is increased by double vane structure and carefully engineered shape.
  • Double vane structure consisting of inner and outer vanes Both vanes have different rotation speeds.
  • Increased efficiency with triangular-shaped vanes.
  • No need for a vane-rotating transmission.
  • The vane rotation is by roller chain conduction, so the conduction torque is doubled.
  • Simple design with a single geared motor as the vane rotation drive source.
  • Processing time is 5 +/-2 minutes.
• The maximum yield is 90% or more of the contained metal within dross.
  -The vanes are integrated within the machine room, and the machine room drives the upper and lower vanes for trouble-free operations.
• The opening surface of machine is as small as 0.8 m², and the dust collection efficiency is outstanding.
• A dust-proof mechanism with positive pressure in the drive unit chamber is adopted.

New Areas of System

• Double blades.
• Ribbed pot for easier forklift usage.
• Hydraulic powered vertical vane movement.
• Non-variable transmission mechanism.

Cooled dross supplier

Temperature control the thermal dross during processing by reusing the previously cooled dross cooled in the cooler.

• Improve the working environment by reducing need to manually cool dross
• Metal recovery yield is greatly improved.

It is a full discharge structure that other companies do not have.
Due to the rapid cooling of the super cooler, the overflowed cold ash can be collected in flexible container bags.

Transfer Unit & Inverting Mechanism

The residual dross treated by the high-speed dross processing machine is inverted and sent to super cooler.
The structure of the reversing (inverting) device has a reversal angle of 145 degrees and therefore can completely discharge the residual dross into the next chamber for super cooling.

Transfer unit

• Chain drive type and no failure.
• Dust generation rate is reduced.
• Fully automated.
• Compact design does not take up much space.

Reversing machine (inverting mechanism)

• Improves the working environment.
• Compact design does not take up much space.
• There is no failure with hydraulic drive system.

Hot dross cooling system: Super Cooler

Automatically cool the hot residual dross that is remaining after the earlier dross processing step (where metal was recovered).

• Simple and clear cooling structure that exhibits a phenomenal cooling effect.
• Cooling efficiency of 95 or more, cooling done with circulating water volume of 150L/min.
  – φ2000×6500L (classification part 3500L) × 16t space saving to achieve the above effect.
• Ultra-precision of the chamber tube body for hot dross cooling (Roundness within 1%, squareness within 0.5%, first-class steel plate, computer-managed automatic welding).
• Open watering system that is easy to maintain.
• Steam venting duct for natural exhaust.
  – With a conveyor for taking out raw materials after granulation. No pit construction is required.

Conveyor

It conveys the cooled and classified particles in a cooler.

Cooled dross feeding conveyor

-The scraper type was adopted for the first time in Japan 40 years ago for conveying residual ash.

It has good sealing properties and is ideal for residual dross mixed with various large and small grain shapes.
-The R-shaped part of the bottom of the casing is made of wear-resistant steel plate to increase durability.

Screw Conveyor

• Single-bearing structure to deal with inability to convey due to bite, overload, and conveying wear.
• Measures to prevent problems with V-shaped casing.
• Measures to prevent overload by changing the core pitch of the blades.

Classification System

It is a rotary sieve that automatically divides the cooled dross discharged from the cooler into 2-3 granular size particles. The granules can be used as cooling ash to regulate the temperature of the system in later cycles, and can also be sold and reused as a heat retainer, deoxidizer, paving material, cement raw material, etc. after applicable chemical adjustment. This should be strived for in order to protect the environment and help to make better use of resources.

Operation control equipment

Based on the experience gained from many system installments and disussions with customers, we have designed an operation circuit from the operator’s point of view with each interlock mechanism emphasizing safety.

Features of design and workability

• Safe workability is achieved by all equipment on the floor. Easy to inspect and clean.
• Compact design.
• Designed with minimal forklift work.

Our system is designed to easily connect with existing baghouse facility.