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Technology for processing of the gold-arsenic concentrates

 

Short description:

 

Preliminary method of the resistant and extremely resistant gold-arsenic concentrates preparation is developed, it allows to obtain the product suitable for further processing both the conventional hydrochemical methods of the gold extracting and at the pyrometallurgical treatment as a fluxing agent in the content of carbon and silicate components in the production of copper or lead.

 

The main advantages of this technology include:

  • deep break-down of material with rundown of arsenic in the 96-98% as sulfides;
  • full utilization of sulfur dioxide;
  • availability of low-velocity gas stream and as a consequence of the absence of dust, which prevents the loss of gold;
  • simplicity of instrumentation and significant energy savings through the use of exothermic reactions of burning of sulfides in the bottom of the shaft furnace.

 

Flow diagram of the gold-arsenic concentrates processing

Flow diagram of the gold-arsenic concentrates processing

 

 

Level of readiness:

 

Process procedures are available at the instrumentation and roasting operations.

 

Process procedures are available at the instrumentation and roasting operations. Technology of the oxidating-sulphide burning implemented at the «Yakutzoloto» association, enterprises of China and tested in experimental-industrial level at the Bakyrchik GMK.

 

 

Technology of extracting of arsenic by oxidating-sulphide roasting from arsenic-pyritic raw materials

1 – granulating machine; 2 – furnace for burning liquid fuel; 3 - dry-off oven; 4 – dust chamber; 5 – ventilator; 6 - roaster furnace; 7 – condensator; 8 – trough-type unloader, 9 – oven to melt the arsenic sulfide.

 

Technology of extracting of arsenic by oxidating-sulphide roasting from arsenic-pyritic raw materials

 

 

Availability of patents:

 

Technology protected by patents of RK.

 

Partners:

 

LLC «Kazakhmys» Corporation»;

«Kazzinc» Company.

 

Contacts:

 

SSE « Zh. Abishev ChMI» RSE «NC CPMRM RK»

Karaganda, 63, Ermekov str.

Tel.: (7212) 43-31-64

Fax: (7212) 43-31-61

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