Method for coproducing vanadium pentoxide from vanadium-containing stone coal ore and fluorite

A vanadium pentoxide and coal mine technology, applied in vanadium oxide and other directions, to achieve the effect of process strengthening and smelting process simplification

Inactive Publication Date: 2008-08-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method uses beneficiation technology to enrich and separate vanadium in stone coal, but since vanadium in stone coal is a typical "ion mosaic" mineral, vanadium can replace aluminum ions in silicon-oxygen octahedra Or iron ions exist in stone coal, and there is no independent or separate vanadium mineral in stone coal. Therefore, it is difficult to enrich vanadium in stone coal by mineral processing.

Method used

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  • Method for coproducing vanadium pentoxide from vanadium-containing stone coal ore and fluorite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment one: stone coal contains vanadium 1.84%

[0048] 1. Crush 100 kg of stone coal ore containing 1.84% vanadium and 20 kg of fluorite ore, ball mill to 200 mesh, mix with sulfuric acid solution with an acidity of 200 g / L at a liquid-solid ratio of 4:1, and continuously pump in the reaction with an acid-resistant pump In the tank, use steam heating to control the temperature in the reactor at 93°C. After 60 minutes, add 1 kg of sodium hypochlorite oxidant to the reaction tank, and let the vanadium-containing stone coal and fluorite ore react and leach in the reaction tank for 360 minutes;

[0049] 2. Use a belt-type suction filter to separate the slurry in the above reaction kettle from liquid to solid, and obtain leach slag and leachate after liquid-solid separation;

[0050] 3. In the reduction reaction tank, the iron filings reduction method is used to reduce the ferric ions in the above leachate, and the amount of iron filings added is 4.5kg;

[0051] 4. The...

Embodiment 2

[0056] Embodiment two: stone coal contains vanadium 1.0%

[0057] 1. Crush 100kg of stone coal ore containing 1.0% vanadium and 12kg of fluorite ore, ball mill to 100 mesh, mix with sulfuric acid solution with an acidity of 125 g / L at a liquid-solid ratio of 1.2:1, and continuously pump in the reaction with an acid-resistant pump In the tank, use steam heating to control the temperature in the reactor at 80°C, add 700g of sodium hypochlorite oxidant to the reaction tank after 65 minutes, let the vanadium-containing stone coal ore and fluorite ore react and leach in the reaction tank for 400 minutes;

[0058] 2. Use a belt-type suction filter to separate the slurry in the above reaction kettle from liquid to solid, and obtain leach slag and leachate after liquid-solid separation;

[0059] 3. In the reduction reaction tank, the iron filings reduction method is used to reduce the ferric ions in the above leachate, and the iron filings addition is 5kg;

[0060] 4. The leaching so...

Embodiment 3

[0065] Embodiment three: stone coal contains vanadium 0.3%

[0066] 1. Crush 100kg of stone coal ore containing 0.3% vanadium and 10kg of fluorite ore, ball mill to 60 mesh, mix with sulfuric acid solution with an acidity of 50 g / L at a liquid-solid ratio of 2:1, and continuously pump in the reaction with an acid-resistant pump In the tank, use steam heating to control the temperature in the reactor at 40°C. After 30 minutes, add 300g of sodium hypochlorite oxidant to the reaction tank, and let the vanadium-containing stone coal and fluorite ore react and leach in the reaction tank for 120 minutes;

[0067] 2. Use a belt-type suction filter to separate the slurry in the above reaction kettle from liquid to solid, and obtain leach slag and leachate after liquid-solid separation;

[0068] 3. In the reduction reaction tank, the ferric ions in the above-mentioned leaching solution are reduced by the iron filings reduction method, and the iron filings addition is 7kg;

[0069] 4. ...

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Abstract

The present invention provides a preparing method of vanadic oxide by coal mine containing vanadium and fluorite. The invention belongs to vanadic hydrometallurgy technology, especially a melting technique of directly lixiviating and separating vanadium from coal mine containing vanadium. Acylvanadium sulfate is prepared by mixing coal mine containing vanadium, fluorite mine and sulphuric acid, then pumped in the reactive tank, further chemical combination and dissolving, acylvanadium sulfate enters in solution, qualified vanadic oxide is prepared. The invention adopts whole wet to process coal mine containing vanadium,recovering and utilizing vanadium, the method has a simple process, strength process, high metal recovery rate, easy to separate object metal, small consumption agent, integrated valuable metal and lower pollution.

Description

technical field [0001] The invention belongs to the hydrometallurgical technology of vanadium, in particular to the smelting technology of direct wet leaching and separating vanadium from vanadium-containing stone coal mines. Background technique [0002] Stone coal is a high-quality combustible mineral formed by bacteria, algae and lower organisms in a shallow sea reducing environment. It is characterized by high ash content, low calorific value, and appearance like black stone, so it is also called black shale. Stone coal contains valuable metals such as vanadium, phosphorus, copper, uranium, etc. Among them, stone coal containing vanadium is the only single mineral resource of vanadium, so it has become an important vanadium resource. [0003] The mineral composition of vanadium-bearing stone coal is complex, and the occurrence state of vanadium is generally considered to have three forms: (1) V(III) exists in the clay mineral dioctahedral sandwich layer in an isotropic f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/02
Inventor 魏昶吴惠玲李存兄樊刚李旻廷邓志敢
Owner KUNMING UNIV OF SCI & TECH
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