Technology for producing vanadium chromium manganese alloyed pig iron by melting vanadium extraction tailings

A vanadium-chromium-manganese alloy and vanadium-extracting tailing slag technology is applied in the field of iron and steel smelting technology, and can solve the problems of unreasonable utilization of vanadium-extracting tailings and the like

Inactive Publication Date: 2012-02-01
王洪东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the above-mentioned problem that the vanadium-extracting tailings cannot be rationally utilized, and provides a process for smelting vanadium-chromium-manganese alloy pig iron with vanadium-extracting tailings

Method used

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  • Technology for producing vanadium chromium manganese alloyed pig iron by melting vanadium extraction tailings
  • Technology for producing vanadium chromium manganese alloyed pig iron by melting vanadium extraction tailings

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Embodiment Construction

[0018] The present invention will be further explained below in conjunction with specific examples. The following examples do not limit the protection scope of the present invention, and all modifications and adjustments made based on the idea of ​​the present invention belong to the protection scope of the present invention.

[0019] The chemical composition of vanadium extraction tailings in the examples is listed in the following table, which is the sampling data of Chenggang in May 1998. The particle size is minus 150 mesh.

[0020] component

TF

SiO 2

TiO 2

Cr 2 o 3

MnO

MgO

CaO

V 2 o 5

S

P

％

34.13

16.83

12.23

5.56

5.28

1.98

1.97

1.73

0.048

0.014

[0021] Mix vanadium extraction tailings powder with titanium ore powder, white ash powder and coke (coal) powder according to the weight ratio of 1:0.20:0.30:0.05, add water in the mixer and...

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Abstract

The invention provides a technology for producing vanadium chromium manganese alloyed pig iron by melting vanadium extraction tailings. According to the technology, the vanadium extraction tailings are mainly prepared into a grain raw material with its granularity being 5-150 millimeters as a raw material in a melting furnace. The grain raw material, which contains agglomerate, cooled agglomerated pellets (blocks) and metallized pellets (blocks), is mixed with coke, ilmenite (blocks or pellets), limestone, dolomite and fluorite. And the mixture is melted by the melting furnace to obtain the alloyed pig iron containing vanadium, chromium and manganese. Based on different components of the grain raw material, the ratio of the grain raw material to ilmenite (blocks or pellets) to limestone to dolomite to fluorite is 1: (0-0.25): (0-0.40): (0-0.10): (0-0.15). According to the proportioning principle, the weight ratio of CaO to SiO2 to TiO2 in the melting furnace slag is controlled within the range of 1: (0.5-1.0): (0.6-1.6), and the slag melting point is made low. The melting furnace is a blast furnace, a submerged arc furnace and a hot-blast cupola.

Description

Technical field: [0001] The invention relates to a iron and steel smelting process, which utilizes the tailing slag after vanadium leaching and extracting vanadium to smelt vanadium-chromium-manganese alloy pig iron. Background technique [0002] The sinter and pellets produced by vanadium-titanium magnetite iron concentrate are smelted into vanadium-containing molten iron by blast furnace, and the vanadium-containing molten iron is blown by oxygen converter to extract vanadium slag, and the vanadium slag is made into fine powder for sodium roasting and water leaching Vanadium pentoxide is extracted, and the vanadium slag powder after vanadium extraction is called vanadium extraction tailings. [0003] Vanadium extraction tailings contain relatively high iron, vanadium, chromium, manganese, titanium and other useful substances. So far, these useful substances have not been well recycled. In the past, vanadium tailings were discarded as waste. Although it is not discarded ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C21B3/06C21B5/02C22B1/00
CPCY02W30/50
Inventor 王洪东
Owner 王洪东
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