Method for producing iron alloy through vanadium extraction tailing reduction smelting

A technology for extracting vanadium tailings and ferroalloys, applied in the field of metallurgy, can solve problems such as low vanadium yield, complex operation process, and long process flow, and achieve the effects of avoiding environmental pollution, making full use of resources, and saving waste slag treatment costs

Active Publication Date: 2013-01-02
攀钢集团西昌钒制品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods all have problems such as complex operation process, long process flow and low vanadium yield.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix vanadium extraction tailings, carbon source, and calcium oxide uniformly according to the ratio of 100:20:15. The basicity of the mixed material is 1. Put the mixed material into the melting furnace, heat it to about 850°C and keep it for 10 minutes, and continue to heat up To about 1450 ℃, keep warm for 40min to get iron alloy. Wherein, the iron alloy contains 91.75% iron, 0.73% TV and 1.21% total chromium (TCr).

Embodiment 2

[0026] Mix vanadium extraction tailings, carbon source, and calcium oxide uniformly according to the ratio of 100:25:20. The basicity of the mixed material is 1. Put the mixed material into the melting furnace, heat it to about 850°C and keep it for 15 minutes, and continue to heat up To about 1450°C, keep it warm for 50 minutes to obtain iron alloy. Wherein, the iron alloy contains 92.75% iron, 0.58% TV and 1.09% TCr.

Embodiment 3

[0028] Mix vanadium extraction tailings, carbon source, and calcium oxide uniformly according to the ratio of 100:35:25. The basicity of the mixed material is 1. Put the mixed material into the melting furnace, heat it to about 850°C and keep it warm for 10 minutes, and continue to heat up To about 1450 ℃, keep warm for 40min to get ferroalloy. Wherein, the iron alloy contains 93% iron, 0.74% TV and 1.7% TCr.

[0029] According to the method for producing ferroalloy by reduction smelting of vanadium extracting tailings of the present invention, it can solve the problem of recycling beneficial elements such as iron, chromium and vanadium contained in vanadium extraction tailings, and use a simple and effective method to convert beneficial elements in vanadium extraction tailings into alloy form Separated to achieve the purpose of comprehensive recycling of resources; it solves the problem of making full use of resources, saving the cost of waste residue treatment, and avoiding ...

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Abstract

The invention discloses a method for producing iron alloy through vanadium extraction tailing reduction smelting. The method comprises the steps that: vanadium extraction tailing is well mixed with a carbon source and calcium oxide; the mixture is heated to a first temperature, and the temperature is maintained for approximately 10-20min; the obtained mixture is heated to a second temperature, and the temperature is maintained for approximately 20-50min; and obtained vanadium-chromium-containing iron alloy is collected. A mixing ratio is that every 100 parts by weight of the vanadium extraction tailing is mixed with approximately 20-35 parts by weight of the carbon source and approximately 15-25 parts by weight of calcium oxide. The first temperature can be 800-900 DEG C, and the second temperature can be 1350-1500 DEG C.

Description

technical field [0001] The invention relates to the field of metallurgy, and more specifically, the invention relates to a method for producing ferroalloy by reduction smelting of vanadium-extracting tailings. Background technique [0002] Vanadium is an important non-ferrous metal. Vanadium and its alloys are widely used in new technology fields such as metallurgy, petrochemical industry, national defense industry and superconductor. Usually, in the smelting process of vanadium-titanium magnetite, extracting V from vanadium slag 2 o 5 Afterwards, V 2 o 5 The mass fraction is about 1.5%, and its vanadium content is relatively high. These vanadium extraction tailings are usually discharged directly, causing a great waste of resources, and a large amount of waste residues pile up like mountains, occupying a large amount of land and polluting the environment. [0003] The total iron (TFe) content in the vanadium extraction tailings is about 30%, the total vanadium (TV) con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22C33/00
CPCY02P10/20
Inventor 张林刘武汉刘恢前朱福平杨雄钟国梅
Owner 攀钢集团西昌钒制品科技有限公司
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