This product is a new compound agent, which is mainly used for cobalt removal in the purification process and and cobalt residue treatment in comprehensive recovery of lead and zinc industry. Also is a chelating precipitant synthesized by high molecular organic materials which is a special purifying agent developed and synthesized for copper, cobalt, nickel and other metal ions purification in the zinc pre- electrolyte.

The principle of the reaction is to add the purifying agent, so that it reacts with metal ions to produce chelate precipitation, and then the cobalt and the main metal zinc will be separated, so as to achieve the purpose of purification.

RL • Na（K） → RL-  +  Na+（K+）

2RL-  +  Me2+  → （RL）2 • Me ↓

ADVANTAGES:

• 1. The cobalt removal is highly effective, and the minimum cobalt content can be reduced to less than 0.1MG/L.

• 2. Zinc powder consumption is greatly reduced, also reducing the dependence of production on zinc powder.

3. no need to adjust PH value, high purification depth for the system, good quality of new liquid, high pass rate, and stable system.

4. The reaction speed of this product is fast (1 to 1.5 hours to complete the reaction), the traditional method of cobalt removal takes more than 2 hours, and there is no cobalt-cadmium reverse dissolution, and the production efficiency is improved.

5. Low slag rate: compared with zinc powder treatment, our cobalt removal agent is less, the slag rate is low, the slag discharge frequency of the filter press is greatly reduced, reducing the labor intensity of workers, and greatly improving the working environment.

6. Low energy consumption: The steam consumption of antimony salt net cobalt removal is large, and the process temperature is between 85°C and 95°C, while the temperature of the company's new cobalt removal agent is controlled between 70°C and 80C, and the steam consumption is greatly reduced.

When a certain hydrometallurgical zinc smelter used traditional technology, the following problems were encountered: low cobalt removal rate, high zinc powder consumption, high labor cost, and high equipment requirements. After using the new cobalt removal agent, the following improvements were achieved:

The reaction time was reduced by more than 30%
The cobalt removal rate reached over 99%
Zinc powder saved about 36.96 million RMB in cost
Equipment operating costs were reduced by about 15 million RMB
Labor costs were reduced by about 1.8 million RMB