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Method for arsenic removal of high-arsenic multi-metal complex materials and device thereof

A multi-metal and material technology, applied in the fields of non-ferrous metallurgy and environmental protection, can solve the problems of increasing the amount of flue gas and dust to be processed, increasing the amount of flue gas and dust, and long heating time, so as to reduce the amount of flue gas and dust amount, enrichment reduction, and obvious environmental protection effect

Active Publication Date: 2016-10-12
CINF ENG CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition, when the rotary kiln heats and roasts the material, the heat source is carried out by heat conduction from the surface to the inside through heat radiation, which creates a problem of "cold center". The surface of the material is quickly heated to produce smoke and dust, while the center It is still cold, resulting in a relatively long heating time, and a relatively increased amount of smoke and dust
As a result, on the one hand, the processing capacity of flue gas and dust is increased, and on the other hand, the grade of arsenic collected is relatively low

Method used

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  • Method for arsenic removal of high-arsenic multi-metal complex materials and device thereof
  • Method for arsenic removal of high-arsenic multi-metal complex materials and device thereof
  • Method for arsenic removal of high-arsenic multi-metal complex materials and device thereof

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Embodiment approach 2

[0046]Implementation Mode 2: This is an implementation mode for de-arsenic treatment of materials that do not require agglomeration before leaching. For high-arsenic multi-metal complex materials that are not dominated by arsenic oxide, mainly black copper powder, anode slime, arsenic slag, etc. After that, it still maintains its loose, granular and powdery form to meet the requirements of leaching. The specific implementation steps are as follows:

[0047] (1) Ingredients:

[0048] The loose, granular, powdery high-arsenic and multi-metal complex materials and the return materials after arsenic removal are mixed according to the predetermined ingredients; the prepared materials are sent into the microwave cavity;

[0049] (2) Microwave heating to separate arsenic:

[0050] After the pellets enter the microwave chamber, the microwave generator emits microwaves to the material to heat up the material rapidly; within 3 to 9 minutes, the temperature of the material rises from ...

Embodiment approach 3

[0064] Embodiment 3: This is a device that is suitable for the method of the present invention and can be used for industrial production. Figure 3 to Figure 5 Reflects the structure of the device.

[0065] It can be seen from the figure that the device of the present invention is mainly composed of a microwave generator 1 , a rotatable storage tray 2 , a sealing cover 3 , a feeding device 4 , an exhaust system 5 and a special pipe 10 for collecting arsenic.

[0066] The following of the charging tray platform 2 is an annular turntable 6 fixedly connected with the charging tray platform 2, and the charging tray platform 2 slowly rotates with the annular turntable 6 to become a rotatable charging tray platform 2. There is a concrete foundation 7 below the annular turntable 6, and supporting rollers 8 are arranged on this foundation to support the annular turntable 6. The charging tray 2 is mainly composed of several fan-shaped bellows 21, and the grate bar 22 is directly insta...

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Abstract

The invention discloses a method for arsenic removal of high-arsenic multi-metal complex materials and a device thereof. Microwaves are used as a heat source for arsenic removal of high-arsenic multi-metal complex materials, arsenic removal and agglomeration of materials needing to be agglomerated can be completed at the same time, materials which do not need to be agglomerated can be kept scattered after completion of arsenic removal, and the smoke volume and dust amount in the material treatment process can be reduced, so that the environment protection effect is obvious, arsenic can be efficiently enriched, and the arsenic removal rate can be effectively increased.

Description

technical field [0001] The invention belongs to the two technical fields of nonferrous metallurgy and environmental protection, and relates to a method and equipment for removing arsenic from high-arsenic and multi-metal complex materials. Background technique: [0002] In copper, lead, zinc, gold, silver and other non-ferrous metal ores, arsenic is the main associated element. According to incomplete statistics in recent years, hundreds of thousands of tons of arsenic are brought into the non-ferrous smelting system in my country every year; In the process of mineral mining and smelting, with the extraction and separation of main metal elements, arsenic will be enriched to varying degrees, and finally form high-arsenic polymetallic complex materials with precious metals and elements such as antimony, bismuth, and lead. With the consumption of high-quality resources, the content of arsenic in heavy metal and precious metal smelting raw materials has increased significantly in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/11
CPCC22B1/11
Inventor 李有刚雷日华张晓东张宁谦陈永明谭雄玉王雄徐灿袁学敏梁军周晓源
Owner CINF ENG CO LTD
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