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A charge structure for blast furnace smelting ultra-high ratio vanadium-titanium magnetite

A vanadium titanomagnetite and blast furnace smelting technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve the problems of increased sulfur load in the furnace and reduced sulfur capacity of slag, and achieves suppression of foaming, increased proportion, and good fluidity. Effect

Active Publication Date: 2022-03-08
CHONGQING UNIV +1
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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a charge structure for smelting ultra-high ratio vanadium-titanium magnetite in a blast furnace, so as to solve the sulfur load in the furnace during the process of smelting vanadium-titanium magnetite resources in the blast furnace increase, and the reduction of slag sulfur capacity and other issues

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  • A charge structure for blast furnace smelting ultra-high ratio vanadium-titanium magnetite
  • A charge structure for blast furnace smelting ultra-high ratio vanadium-titanium magnetite

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Embodiment Construction

[0032] The invention will be further described below with reference to the accompanying drawings and examples.

[0033] First, the ultra-high ratio for a blast furnace charge vanadium-titanium magnetite structures, specifically: a high ratio of the whole pellet magnesia vanadium and titanium + vanadium-titanium sinter high basicity + a small amount of alumina ore. The present invention refers to the ratio mentioned ultra high-basicity sinter vanadium and titanium, the proportion of all-vanadium-titanium magnetite from 80% to 100%. The present invention is referred to a high basicity sinter it refers to vanadium-titanium sinter basicity CaO / SiO 2 Greater than 2.0.

[0034] Table 1: Comparison Table of the prior art

[0035] Example Pocolite Sinter Block mine Vanadium-titanium mine accounts for a percentage of total furnace Sulfur load kg / t current technology 20% 75% 0-5% 50.05~53.90 3.805~3.835 this invention 40%~50% 47%~55% 2%~5% 84~88 3.703~3.7...

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Abstract

The invention discloses a charge structure for blast furnace smelting ultra-high ratio vanadium-titanium magnetite. 45~55%, high alumina lump ore 0~5%; Among them, the pellets use all-vanadium-titanium-magnetite as raw material, increase the content of magnesium oxide in the pellets, and make all-vanadium-titanium-magnesium pellets , the sulfur content of the pellets in the charge is 0.017%; the binary basicity (CaO / SiO 2 ) greater than 2.0. The invention solves the problems of increased sulfur load in the furnace and decreased sulfur capacity of slag during blast furnace smelting vanadium-titanium magnetite resources, greatly increases the proportion of vanadium-titanium magnetite in high-alkalinity sintered ore, and realizes Resource utilization of vanadium-titanium magnetite in Panxi area.

Description

Technical field [0001] Technical Field The present invention relates to a blast furnace, particularly to an ultra-high ratio in blast furnace burden structure vanadium and titanium magnetite. Background technique [0002] Is a kind of vanadium-titanium magnetite iron, vanadium, titanium-based mineral resources complex multi-metal element symbiosis, because great utilization value, cause for concern. Our Panzhihua region relying on the rich resources of vanadium-titanium magnetite region, established a complete blast - iron and steel smelting process, to achieve the extraction and use of Fe, V and Ti three elements. Vanadium-titanium magnetite blast furnace ironmaking is China's contribution to the international community, with the new situation highlights the problems of resources and environment, efficient use of resources, the level of cleaning process, the sustainable development of the industry are dependent on the depth and persistence basic research, for a reasonable charge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16C22B1/24C21B5/00
CPCC22B1/16C22B1/24C21B5/008
Inventor 吕学伟庞正德凌家伟蒋宇阳严志明潘成文永才付卫国谢洪恩
Owner CHONGQING UNIV
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