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Method for extracting iron and vanadium from vanadium-titanium magnetite concentrates

A vanadium-titanium magnetite concentrate and extraction technology, which is applied in the field of extracting iron and vanadium, can solve the problems of low product added value, low recovery rate, environmental pollution, etc., and achieve high product added value, increased vanadium recovery rate, and easy stripping Effect

Active Publication Date: 2015-02-18
河北中科同创钒钛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency-clean vanadium-titanium extractor for the shortcomings of low recovery rate, high energy consumption, serious environmental pollution, and low added value of products in the current process for extracting iron and vanadium from vanadium-titanium magnetite concentrate. The method for extracting iron and vanadium products from magnetite concentrate has the advantages of industrial operability and environmental friendliness

Method used

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  • Method for extracting iron and vanadium from vanadium-titanium magnetite concentrates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) The main components of the raw material vanadium-titanium magnetite concentrate: the mass content of TFe is 39.85%, TiO 2 The mass content of V is 28.74%, V 2 o 5 The mass content is 0.95%, and the vanadium-titanium magnetite concentrate is ground to -200 mesh 80%;

[0030] (2) Mix the finely ground vanadium-titanium magnetite concentrate with 10% hydrochloric acid, the liquid-solid ratio is 10:1, and leaching at 150°C for 5 hours to obtain the acid leaching solution;

[0031] (3) Fe in the pickling solution obtained in step (2) is replaced with potassium chlorate 2+ Oxidized to Fe 3+ ;

[0032] (4) Extract the acid dipping solution obtained in step (3) and 4-methyl-2-pentanone at a volume ratio of 0.5:1 for 5 times to obtain an organic phase and a vanadium-containing raffinate;

[0033] (5) Mix the organic phase obtained in step (4) with deionized water, wherein the organic phase: water phase = 5:1, strip twice to obtain 4-methyl-2-pentanone and acidic iron-co...

Embodiment 2

[0037] (1) The main components of raw material vanadium-titanium magnetite concentrate: the mass content of TFe is 44.23%, TiO 2 The mass content of V is 23.25%, V 2 o 5 The mass content is 1.31%, and the vanadium-titanium magnetite concentrate is ground to -200 mesh 80%;

[0038] (2) Mix the finely ground vanadium-titanium magnetite concentrate with 25% hydrochloric acid, the liquid-solid ratio is 5:1, and leaching at 120°C for 3 hours to obtain the acid leaching solution;

[0039] (3) Fe in the pickling solution obtained in step (2) is replaced with sodium chlorate 2+ Oxidized to Fe 3+ ;

[0040] (4) extracting the oxidized acid dipping solution obtained in step (3) and 4-methyl-2-pentanone at a volume ratio of 5:1 twice to obtain an organic phase and a vanadium-containing raffinate;

[0041] (5) Mix the organic phase obtained in step (4) with deionized water, wherein the organic phase:water phase=0.5:1, back extraction 5 times to obtain 4-methyl-2-pentanone and acidic ...

Embodiment 3

[0045] (1) The main components of raw material vanadium-titanium magnetite concentrate: the mass content of TFe is 50.5%, TiO 2 The mass content of V is 15.66%, V 2 o 5 The mass content is 0.80%, and the vanadium-titanium magnetite concentrate is ground to -200 mesh 80%;

[0046](2) Mix the finely ground vanadium-titanium magnetite concentrate with 36% hydrochloric acid, the liquid-solid ratio is 1:1, and leaching at 100°C for 10 hours to obtain the acid leaching solution;

[0047] (3) Fe in the pickling solution obtained in step (2) was decomposed with hydrogen peroxide 2+ Oxidized to Fe 3+ ;

[0048] (4) Extract the acid dipping solution obtained in step (3) and 4-methyl-2-pentanone at a volume ratio of 3:1 for 3 times to obtain an organic phase and a vanadium-containing raffinate;

[0049] (5) Mix the organic phase obtained in step (4) with deionized water, wherein the organic phase:water phase=2:1, back extraction 3 times to obtain 4-methyl-2-pentanone and acidic iron...

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Abstract

The invention belongs to the field of hydrometallurgy and in particular relates to a method for extracting iron and vanadium from vanadium-titanium magnetite concentrates. The method comprises the following steps of: 1) carrying out acid dissolution and leaching on vanadium-titanium magnetite concentrates and hydrochloric acid; 2) oxidizing Fe<2+> in acid leaching solution obtained in the step 1) into Fe<3+> with an oxidizing agent; 3) extracting iron from the oxidized acid leaching solution obtained in the step 2) with an extracting agent to obtain an organic phase and vanadium-containing raffinate; (4) carrying out back extraction on the organic phase obtained in the step 3) to obtain an extracting agent and an iron-containing acid solution; 5) calcining the iron-containing acid solution obtained in the step 4) to obtain hydrochloric acid and iron trioxide; and 6) treating the vanadium-containing raffinate obtained in the step 3) to obtain ammonium vanadate or vanadium pentoxide. The method has the advantages that the added values of products are high, the recovery rate of vanadium is greatly increased, and the environmental pollution can be avoided.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy, in particular, the invention relates to a method for extracting iron and vanadium from vanadium-titanium magnetite concentrate. Background technique [0002] Vanadium-titanium magnetite is a major characteristic polymetallic mineral resource in my country, with huge reserves, and multi-metal symbiosis such as vanadium, titanium, iron, chromium, etc., and the comprehensive utilization value of resources is very high. my country has proven reserves of more than 10 billion tons, and prospective reserves of more than 30 billion tons, mainly distributed in Panxi area of ​​Sichuan, Chengde of Hebei and Chaoyang area of ​​Liaoning. Panxi is the most abundant area of ​​vanadium and titanium resources in my country. The proven reserves of vanadium-titanium magnetite are more than 10 billion tons, and the reserved reserves are 6.73 billion tons, of which vanadium (V 2 o 5 ) 14.75 million tons, titanium (Ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/10C22B3/26C22B34/22C01G49/06
Inventor 齐涛陈德胜王丽娜胡国平赵宏欣仲斌年赵龙胜曲景奎
Owner 河北中科同创钒钛科技有限公司
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