Sintering method of high-chromium and high-vanadium schreyerite

A sintering method, vanadium-titanium ore technology, applied in blast furnaces, furnace types, blast furnace details, etc., can solve problems such as poor ore-forming properties and less liquid phase generation, and achieve improved ore-forming performance, high liquid phase generation, and improved strength and the reductive effect

Inactive Publication Date: 2012-05-09
HEILONGJIANG JIANLONG IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of less liquid phase generation and poor ore-forming properties in the sintering process of high-chromium vanadium-titanium magnetite in the prior art, and provides a high-chromium, high-vanadium type vanadium-titanium sintering method

Method used

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Effect test

specific Embodiment approach 1

[0006] Specific embodiment one: the high-chromium, high-vanadium type vanadium-titanium ore sintering method of the present embodiment is carried out according to the following steps: one, take vanadium-titanium ore 10%~13% by mass percentage, iron raw material 45.5%~68% , 15% of additives, 17% to 21% of auxiliary materials and 5% to 5.5% of fuels; 2. Mixing operation: put the vanadium-titanium ore, iron raw materials, additives, auxiliary materials and fuels weighed in step 1 into the mixer Mixing twice, the first mixing is at 80°C for 48-52s; the second mixing is at 70°C for 2.5-3min to obtain the mixture; 3. Sintering: pass After distributing the mixture obtained in step 2, the distributing machine puts it into a belt sintering machine for sintering, that is, the sintering of high-chromium and high-vanadium Russian vanadium-titanium ore is completed; among them, the sintering described in step 3 has an ignition temperature of 1070°C ~1258°C, the exhaust gas temperature in t...

specific Embodiment approach 2

[0008] Embodiment 2: This embodiment differs from Embodiment 1 in that the vanadium-titanium ore described in step 1 is Russian vanadium-titanium ore. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0009] Embodiment 3: This embodiment differs from Embodiments 1 to 2 in that the iron raw material in step 1 is magnetite or iron fine powder. Others are the same as the specific embodiment 1 to 2.

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Abstract

The invention relates to a sintering method of high-chromium and high-vanadium schreyerite and relates to a sintering method of schreyerite. The invention aims to solve the problems of the prior art that the yield of the liquid phase is low and the mineralization is poor in the sintering process of high-chromium vanadium-titanium magnetite. The sintering method comprises the following steps: 1) weighting schreyerite, an iron raw material, additives, auxiliary materials and fuel, and placing the materials in a mixer to perform mixing twice; and 2) distributing the mixture by a distributor at adistribution thickness of 550-580mm and then sintering at a sintering final temperature of 300-350 DEG C, a sintering final pressure of 10-11.5kPa and a sintering machine speed of 1.5-4 m / min to complete the sintering of high-chromium and high-vanadium schreyerite. By adopting the sintering method, the vanadium content of the vanadium-titanium sintered ore is up to more than 0.2% and a solid foundation is laid for the blast furnace smelting of schreyerite. The sintering method is used in the field of schreyerite sintering.

Description

technical field [0001] The invention relates to a sintering method of vanadium-titanium ore. Background technique [0002] Due to the complex composition of the existing high-chromium vanadium-titanium magnetite minerals, poor assimilability, and high reflow temperature, there is little liquid phase formation during the sintering process and poor ore-forming properties. Contents of the invention [0003] The invention aims to solve the problems of less liquid phase generation and poor ore-forming property in the sintering process of high-chromium vanadium-titanium magnetite in the prior art, and provides a high-chromium and high-vanadium vanadium-titanium sintering method. [0004] The sintering method of high chromium and high vanadium type vanadium-titanium ore of the present invention is carried out according to the following steps: 1. Take by mass percentage 10%-13% of vanadium-titanium ore, 45.5%-68% of iron raw material, 15% of addenda, 17% to 21% of auxiliary mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16C21B5/00
CPCY02P10/20
Inventor 张勇姚本金陈立军陈立文曲刚巩明健张路春纪守考曹淑华
Owner HEILONGJIANG JIANLONG IRON & STEEL
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