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Process method for preparing TiC crystal grains by reducing and carbonizing titanium-containing blast furnace slag

A process method and technology of blast furnace slag, applied in the direction of carbide, titanium carbide, titanium halide, etc., can solve the problem that the particle size of TiC grain agglomerates cannot meet the requirements of ore dressing, so as to improve the chlorination efficiency and increase the particle size , the effect of increasing the chance of contact

Inactive Publication Date: 2020-02-21
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of TiC grain agglomerates still cannot meet the requirements of beneficiation

Method used

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  • Process method for preparing TiC crystal grains by reducing and carbonizing titanium-containing blast furnace slag
  • Process method for preparing TiC crystal grains by reducing and carbonizing titanium-containing blast furnace slag

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specific Embodiment

[0035] Aiming at the problems existing in the prior art, the invention provides a method for preparing spherical iron-containing coke for reduction carbonization of titanium-containing blast furnace slag.

[0036] The present invention comprises following two aspects:

[0037] A. By wrapping coking coal on the outside of iron balls whose specific gravity is greater than that of coking coal and firing them, spherical iron-containing coke with a density close to that of titanium-containing blast furnace slag can be obtained and used in the reduction carbonization process of titanium-containing blast furnace slag, which solves the problem of reduction carbonization in the past The problem of coke floating during the process, so that the coke can be mixed with the slag liquid evenly;

[0038] B. After the coke outside the spherical iron-containing coke is consumed by the reduction and carbonization of titanium-containing blast furnace slag, the TiC grains formed are obviously enri...

Embodiment 1

[0045] Take 117g of iron powder and crush and grind it to about 180μm, and take 100g of coking coal and grind it to about 74μm. Mix iron powder and coking coal evenly and briquette (the pressure is about 10MPa), place the briquette in a corundum crucible, place the crucible at the constant temperature zone of the tube furnace and seal the furnace tube. Firing is carried out according to the following temperature regime: 5°C / min rises to 1055°C, heats it for 2 hours, and then cools down to room temperature at 5°C / min (argon protection throughout the whole process, the flow rate is about 1L / min). The fired briquettes are crushed and ground to 190 μm, and used as spherical iron-containing coke for later use. The microstructure of the produced spherical iron-containing coke is as follows: figure 1 shown. Mix 10g of titanium-containing blast furnace slag (with a particle size of about 74μm) and 3.48g of spherical iron-containing coke uniformly from a steel plant and briquette (at ...

Embodiment 2

[0048] Take 117g of iron powder and crush and grind it to about 180μm, and take 100g of coking coal and grind it to about 74μm. Mix iron powder and coking coal evenly and briquette (the pressure is about 10MPa), place the briquette in a corundum crucible, place the crucible at the constant temperature zone of the tube furnace and seal the furnace tube. Firing is carried out according to the following temperature regime: 5°C / min rises to 1055°C, heats it for 2 hours, and then cools down to room temperature at 5°C / min (argon protection throughout the whole process, the flow rate is about 1L / min). The fired briquettes are crushed and ground to 230 μm, and used as spherical iron-containing coke for later use. The microstructure of the produced spherical iron-containing coke is as follows: figure 1 shown. Mix 10g of titanium-containing blast furnace slag (with a particle size of about 74μm) and 3.48g of spherical iron-containing coke uniformly from a steel plant and briquette (at ...

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Abstract

The invention discloses a process method, particularly discloses a process method for preparing TiC crystal grains by reducing and carbonizing titanium-containing blast furnace slag, and belongs to the technical field of metallurgical tailing recycling production processes. The process method is capable of increasing TiC crystal grain aggregate particle size effectively, and comprises the following steps of: spherical iron-containing coke particles with the density matched with the density of titanium-containing blast furnace slag melt are fired firstly, then the spherical iron-containing cokeparticles and the titanium-containing blast furnace slag melt are uniformly mixed and subjected to high-temperature carbonization to prepare the Fe-TiC combination with the diameter ranging from 220micrometers to 280 micrometers, wherein average radial length of the TiC grains ranges from 20 micrometers to 30 micrometers.

Description

technical field [0001] The invention relates to a process method, in particular to a process method for preparing TiC grains by reduction carbonization of titanium-containing blast furnace slag, and belongs to the technical field of metallurgical tailing slag reuse production process. Background technique [0002] Preparation of TiCl from titanium-containing blast furnace slag "high temperature carbonization-low temperature chlorination" 4 and building materials” process, there is a serious coke floating phenomenon during the carbonization process, the grade of TiC in the finished product of carbonized slag is not high, and the particle size of TiC particles is small, usually only a few to a dozen microns, which leads to low-temperature chlorination process. The result of low chlorination efficiency. Considering the characteristics that TiC crystal grains are easy to enrich and grow around iron grains, the TiC in the finished carbide slag product is enriched and grown in adv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/921C01G23/02
CPCC01G23/022C01P2004/60C01P2004/61C01B32/921
Inventor 刘亚东黄家旭赵青娥王东生
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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