Direct vanadium extracting method for vanadium-titanium magnetite

A vanadium-titanium-magnetite, direct technology, applied in the field of vanadium chemical metallurgy, can solve the problem of not being able to directly obtain vanadium products, and achieve the effects of low equipment requirements, comprehensive utilization, and low process cost

Active Publication Date: 2017-08-25
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this method cannot directly obtain vanadium products, only vanadium raw materials can be obtained

Method used

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  • Direct vanadium extracting method for vanadium-titanium magnetite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A method for directly extracting vanadium from vanadium-titanium magnetite, comprising the steps of:

[0065] will V 2 o 5 Content is 1.52wt% vanadium-titanium magnetite, calcium carbonate and activated carbon are mixed, and the addition of calcium carbonate is 1% of vanadium-titanium magnetite weight, and the addition of activated carbon is 1% of vanadium-titanium magnetite weight, in Calcification and roasting at 900°C for 3 hours to obtain roasted clinker;

[0066] Mix the clinker, ammonium bicarbonate and water, the amount of ammonium bicarbonate added is 5% of the clinker mass, the water added is 15% of the clinker mass, the mixed material is ammonized at 20°C for 5 hours, and extracted Vanadium in clinker;

[0067] After the ammonification, the slurry was subjected to a deamination reaction at 80°C for 3 hours. After the ammonium bicarbonate was completely decomposed, the vanadium in the slurry was leached by adding 80°C circulating crystallization liquid, leac...

Embodiment 2

[0070] A method for directly extracting vanadium from vanadium-titanium magnetite, comprising the steps of:

[0071] will V 2 o 5 Content is 1.6wt% vanadium-titanium magnetite, calcium carbonate and active carbon are mixed, and the addition of calcium carbonate is 3% of vanadium-titanium magnetite weight, and the addition of activated carbon is 3% of vanadium-titanium magnetite weight, in Calcification and roasting at 1000°C for 3 hours to obtain roasted clinker;

[0072] Mix the clinker, ammonium bicarbonate and water, the amount of ammonium bicarbonate added is 7% of the clinker mass, the water added is 18% of the clinker mass, the mixed material is ammonized at 30°C for 3 hours, and extracted Vanadium in clinker;

[0073] After the ammonification, the slurry was subjected to a deamination reaction at 90°C for 3 hours. After the ammonium bicarbonate was completely decomposed, the vanadium in the slurry was leached by adding a 90°C circulating crystallization solution for ...

Embodiment 3

[0076] A method for directly extracting vanadium from vanadium-titanium magnetite, comprising the steps of:

[0077] will V 2 o 5 Content is 1.52wt% vanadium-titanium magnetite, calcium carbonate and activated carbon are mixed, and the addition of calcium carbonate is 5% of vanadium-titanium magnetite weight, and the addition of activated carbon is 5% of vanadium-titanium magnetite weight, in Calcification and roasting at 1000°C for 2 hours to obtain roasted clinker;

[0078] Mix the clinker, ammonium bicarbonate and water, the amount of ammonium bicarbonate added is 10% of the clinker mass, the water added is 20% of the clinker mass, the mixed material is ammonized at 45°C for 2 hours, and extracted Vanadium in clinker;

[0079] After the ammonification, the slurry was subjected to a deamination reaction at 100°C for 2 hours. After the ammonium bicarbonate was completely decomposed, the vanadium in the slurry was leached by adding 95°C circulating crystallization liquid fo...

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Abstract

The invention provides a direct vanadium extracting method for vanadium-titanium magnetite. The method comprises the steps that calcification roasting is conducted by taking a mixture of the vanadium-titanium magnetite and a carbon-based additive as a raw material, a calcification roasting product is subjected to aftertreatment, and then vanadium-containing liquid is obtained. According to the method, the vanadium recycling rate is high; the impurity content of leachate is low, and a high-purity vanadium product can be prepared through simple impurity removal; no waste gas is generated, the operation technology is simple, the equipment requirement is low, and the technology cost is low; the vanadium extracting process does not influence iron making, tailings obtained after vanadium extracting do not contain sodium salt and can be directly subjected to ore blending for iron making, and then comprehensive utilization of vanadium-titanium magnetite resources is achieved.

Description

technical field [0001] The invention belongs to the technical field of vanadium chemical metallurgy and relates to a method for directly extracting vanadium from vanadium-titanium magnetite. Background technique [0002] At present, there are two main methods for extracting vanadium from iron ore concentrate, one is to extract vanadium from blowing slag after vanadium-titanium magnetite is iron-smelted and steel-smelted; the other is to extract vanadium-titanium-magnetite concentrate directly Extract vanadium. [0003] Vanadium extraction from vanadium slag is the mainstream process for extracting vanadium from vanadium-titanium magnetite in my country, that is, the process of sodium roasting-water immersion-purification-precipitation of vanadium. Enterprises that use vanadium-titanium magnetite as raw materials to produce iron and vanadium products currently use the traditional vanadium slag sodium roasting process to extract vanadium. The basic principle of sodium roasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/22C22B1/02C22B3/14
CPCC22B1/02C22B3/14C22B34/22Y02P10/20
Inventor 杜浩刘彪郑诗礼王少娜郭雪梅李猛王海旭
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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