Secondary Electrolytic Enrichment of Nickel Anode Mud and Concentrated Sulfuric Acid Leaching

Keer Bang Hong Kong and Canada (Port Colbome) a nickel anode sludge treatment plant Ke Bier Cliff containing 35% Ni, 20% Cu, 2% ~ 3% Fe, 0.5% ~ 0.8% noble metal. The plant mixes the dry anode mud with carbon sufficient to reduce copper and nickel, and smelts the slag in a 9t small reverberatory furnace (about 4.7m×1.5m) for burning oil to produce a separate electrolysis system for the anode plate in the nickel sulfate electrolyte. Secondary electrolysis is carried out in the middle. The secondary anode mud of the enriched precious metal is sieved to remove the residual crumb, and then digested with concentrated sulfuric acid, and leached and washed to remove copper and residual nickel and iron , and the total amount of precious metal is 45%. ~60% of the leaching slag is shipped to the Accton refinery in London for refining. After the leachate is replaced with copper and the precious metal is recovered, the solution is sent to copper electrolysis for use as an electrolyte.

Small Injection Machine

1. Vertical opening and closing mold and in-line screw injection for easy inlav and injection molding.


2. Small and exquisite, small footprint, suitable for most plant height.


Equipped with a light-adjustable upper template to facilitate mold installation and replacement;

3. Top-mounted pre-plasticized motor, high-precision transmission and reduced machine height, saving a lot of space in the factory;

4. Vertical hydraulic mold closing structure, fast and low power consumption during mold closing;

5. High-quality nitrided alloy steel pipe set, high wear-resisting and anti-reverse structure, long service life of screw;

6. The temperature control system adopts computer PID control, which is intuitionistic and easy to operate, and the material temperature is accurate

7. The hydraulic system adopts multi-stage pressure independent control, linear control of speed and temperature, precise control of injection glue, opening and closing mode and other actions to make the production injection stable, and the appearance of the product is beautiful;

8. The closed mode and the injection adopt the closed-loop feedback position information of the grating ruler, and the position control is more precise;

9. The electrical appliance is equipped with safety protection device to maintain the safety of the operator; and the fault alarm information display makes the maintenance easier and convenient;

10. The computer adopts large-screen LCD design, intuitive and easy-to-operate human-machine interface, and is free to switch between Chinese, English, Russian and Korean four languages; it can store 60 sets of mold parameter memory, and the production adjustment is easy and efficient.

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