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Method for extracting tungsten-copper-bismuth-iron from tungsten-containing limonite

A technology of limonite and tungsten copper, which is applied in chemical instruments and methods, process efficiency improvement, flotation and other directions, can solve the problems of no extraction method, inability to comprehensively utilize, low efficiency, etc., and reduce furnace gas carry-over. The effect of loss, low beneficiation cost and easy operation

Inactive Publication Date: 2017-10-24
曹彦军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But, those skilled in the art have not found a kind of efficient and feasible extraction method for a long time
Although some technical solutions have been proposed, they are difficult to popularize in practice because of low efficiency; or they are only extracted from tungsten and cannot be comprehensively utilized; and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method for extracting tungsten-copper-bismuth-iron from tungsten-containing limonite of the present invention comprises the following steps:

[0033] a. Secondary magnetic separation, crush the tungsten-containing limonite ore to 3mm, send it to a 2000 Gauss magnetic separator for weak magnetic separation to obtain magnetite concentrate, and send the tailings to a 10,000 Gauss wet strong magnetic separator for magnetic separation Tungsten limonite concentrate;

[0034] b. drying and ball milling, the obtained tungsten-containing limonite concentrate is input into a rotary oven to dry to 1% water content, and the dried limonite concentrate and limonite concentrate weight 6% soda ash and 5% chlorine Sodium chloride and 2.5% anthracite powder are input into a dry ball mill for ball milling to obtain more than 90% -200 mesh mixture;

[0035] c. For ball making, input the mixture after dry ball milling into the mixer, and at the same time add liquid caustic soda with a ...

Embodiment 2

[0048] The method for extracting tungsten-copper-bismuth-iron from tungsten-containing limonite of the present invention comprises the following steps:

[0049] a. Secondary magnetic separation, the tungsten-containing limonite ore is crushed to 2mm, sent to a 3000 Gauss magnetic separator for weak magnetic separation to obtain magnetite concentrate, and the tailings are sent to a 15,000 Gauss wet strong magnetic separator for magnetic separation Tungsten limonite concentrate;

[0050] b. drying and ball milling, input the obtained tungsten-containing limonite concentrate into a rotary oven to dry to 3% water content, and dry the dried limonite concentrate with 12% soda ash and 5% chlorine Sodium chloride and 2.5% anthracite powder are input into a dry ball mill for ball milling to obtain more than 90% -200 mesh mixture;

[0051] c. For ball making, input the mixture after dry ball milling into the mixer, and at the same time add liquid caustic soda with a concentration of 10...

Embodiment 3

[0062] The method for extracting tungsten-copper-bismuth-iron from tungsten-containing limonite of the present invention comprises the following steps:

[0063] a. Secondary magnetic separation, the tungsten-containing limonite ore is crushed to 3mm, sent to a 2000 Gauss magnetic separator for weak magnetic magnetic separation to obtain magnetite concentrate, and the tailings are sent to a 15,000 Gauss wet strong magnetic separator for magnetic separation Tungsten limonite concentrate;

[0064] b. Drying and ball milling, input the obtained tungsten-containing limonite concentrate into a rotary oven to dry to 2% water content, and dry the dried limonite concentrate with 10% soda ash and 5% chlorine Sodium chloride and 2.5% anthracite powder are input into a dry ball mill for ball milling to obtain a 90%-200 mesh mixture;

[0065] c. For ball making, input the mixture after dry ball milling into the mixer, and at the same time add liquid caustic soda with a concentration of 8%...

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Abstract

The invention discloses a method for extracting tungsten, copper, bismuth and iron from tungsten-containing limonite. The method comprises the following steps: (a) carrying out secondary magnetic separation; (b) drying, and carrying out ball milling; (c) carrying out granulation; (d) roasting; (e) cooling; (f) carrying out wet-type ball milling; (g) carrying out leaching; (h) filtering, (i) extracting copper and bismuth; (j) extracting iron; (k) removing impurities; and (i) extracting tungsten.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a method for extracting tungsten-copper-bismuth-iron from tungsten-containing limonite. Background technique [0002] China is the world's largest tungsten mining country. Limited to smelting technology, for a long time, we have only selectively mined tungsten ore that is easy to enrich and has relatively high grade, and low-grade tungsten oxide limonite is only used as raw material for cement production. After long-term flood mining, rich tungsten ore and easy-to-select tungsten ore are gradually decreasing and are on the verge of exhaustion. The low-grade tungsten-limonite contains different grades of tungsten and other non-ferrous metals such as copper-bismuth-iron. Therefore, low-grade tungsten-bearing limonite has become an important tungsten resource, and it is of great strategic significance to extract tungsten and other non-ferrous metals such as copper-bismuth-iron. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/36C22B30/06C22B15/00C22B3/04C22B1/08B03C1/30B03D1/00
CPCB03C1/30B03D1/00C22B1/08C22B3/04C22B15/00C22B30/06C22B34/36Y02P10/20
Inventor 曹彦军
Owner 曹彦军
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