High chromium-high vanadium type vanadium titanium ore pellet

A vanadium-titanium ore and high-vanadium technology, which is applied in the field of vanadium-titanium ore pellets, can solve the problems of poor pelletization and coarse pellet size, and achieve the effect of ensuring production and improving the quality of green pellets

Inactive Publication Date: 2013-09-04
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 that the high chromium-high vanadium type vanadium-titanium magnetite pellets prepared by the prior art have coarse particle size and poor spheroidization, and provide a high-chromium-high vanadium type vanadium-titanium magnetite pellet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Embodiment 1: High chromium-high vanadium type vanadium-titanium ore pellets are made of 45-50 parts by weight of vanadium-titanium ore, 50-55 parts of iron material, and 1.8-2.1 parts of bentonite, wherein iron The material is composed of 11%-28% iron ore powder and 72%-89% ultra-fine iron powder by weight percentage. The particle size of iron ore powder is 0.5mm-3.5mm, and the fineness of ultra-fine iron powder is -325 mesh ≥ 85% or -200 mesh ≥ 95%.

[0015] The vanadium-titanium ore used in this embodiment is Russian vanadium-titanium ore.

[0016] The beneficial effect of this embodiment is: the preparation method of high chromium-high vanadium type vanadium-titanium ore pellets of this embodiment, by mixing ultra-fine powder and appropriately increasing the proportion of bentonite, it is a good solution to the problem that the particle size of vanadium-titanium powder is too coarse , the disadvantage of poor ball formation, effectively improves the quality of gree...

specific Embodiment approach 2

[0017] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the high chromium-high vanadium type vanadium-titanium ore pellets are composed of 46-49 parts of vanadium-titanium ore, 51-54 parts of iron material, 1.9 to 2.0 parts of bentonite. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Specific embodiment three: a kind of high chromium-high vanadium type vanadium-titanium ore pellet is made by the vanadium-titanium ore of 48 parts, the iron material of 52 parts, the bentonite of 2 parts by weight, wherein iron material is by weight The percentage is composed of 15% iron ore powder and 85% ultrafine iron powder. The particle size of the iron ore powder is 0.5mm-3.5mm, and the fineness of the ultrafine iron powder is -325 mesh ≥ 85%.

[0019] The preparation method of the above-mentioned pellets is realized through the following steps: batching, drying and mixing, pelletizing, screening of raw pellets, roasting in a shaft furnace, and cooling. The specific steps are:

[0020] One, batching: take by weight 48 parts of vanadium-titanium ore, 52 parts of iron material, 2 parts of bentonite, wherein iron material is by weight percentage by 15% iron ore powder and 75% ultrafine iron Composed of iron ore powder, the particle size of iron ore powder is 0.5mm ~...

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Abstract

The invention relates to a high chromium-high vanadium type vanadium titanium ore pellet, in particular to a vanadium titanium ore pellet. The invention mainly solves the problems that pelletizing granularity is coarse and pelletizing performance is poor in the high chromium-high vanadium type vanadium titanium ore pellet prepared by the prior art. The high chromium-high vanadium type vanadium titanium ore pellet is prepared by 45-50 parts by weight of vanadium titanium ore, 50-55 parts by weight of iron material and 1.8-2.1 parts by weight of bentonite, wherein the iron material comprises 11-28wt% of iron powdered ore and 72-89wt% of ultrafine iron powder. The preparation method of the pellet is realized by the following steps of: burdening, drying and mixing, pelletizing, green pellet screening and shaft furnace roasting. Vanadium content of vanadium titanium powder in the vanadium titanium ore pellet provided by the invention reaches up to more than 4.5%, and blast furnace vanadium titanium smelting requirement is met. The high chromium-high vanadium type vanadium titanium ore pellet provided by the invention is applicable to furnace charge for blast furnace vanadium titanium smelting.

Description

technical field [0001] The invention relates to a vanadium-titanium ore pellet. Background technique [0002] In the prior art, the high chromium-high vanadium type vanadium-titanium magnetite has the problems of coarse particle size and poor spheroidization, which is not suitable for the pelletizing process, resulting in the particle size and drop strength of the green pellets not meeting the requirements of the production process, which ultimately affects the pelletizing process. mine yield and quality. Contents of the invention [0003] The present invention aims to solve the problem that the high chromium-high vanadium type vanadium-titanium magnetite pellets prepared by the prior art have coarse particle size and poor spheroidization, and provide a high-chromium-high vanadium type vanadium-titanium magnetite pellet . [0004] A high chromium-high vanadium type vanadium-titanium ore pellet of the present invention is characterized in that the high-chromium-high vanad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/243
Inventor 张勇薛向欣姚本金储满生张显峰陈立文曲刚纪守考
Owner HEILONGJIANG JIANLONG IRON & STEEL
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