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Method for iron removal of titanium carbide containing furnace slag

A technology of titanium carbide and slag, which is applied in the field of metallurgy, can solve problems affecting the production process of titanium tetrachloride, and achieve the effects of high iron removal efficiency, good application prospects, and simple process

Inactive Publication Date: 2019-01-11
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

[0004] The purpose of the present invention is to provide a method for removing iron from slag containing titanium carbide, so as to solve the technical problem that the high iron content in the slag containing titanium carbide will affect the subsequent production process of titanium tetrachloride

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] will contain TiO 2 22% of blast furnace slag reacts with coke powder at high temperature to produce slag containing 14.12% titanium carbide, and 4.2% Fe in the slag; after the slag containing titanium carbide is crushed to less than 10mm, it is sent to the vertical mill for crushing. The capacity of the vertical mill is 5t / h. During the vertical mill process, adjust the feed rate to 5.3t / h (calculated on a dry basis). Control the roller pressure of the vertical mill to 3-4MPa, and the pressure difference between the inlet and outlet of the vertical mill to be 1.2kPa-1.4kPa. Realize that the return material is 5-6% of the feed amount, and the mass fraction of Fe in the return material is measured to be 41.3%. Adjust the current size of the magnetic separator above the return material belt, and control the magnetic field strength on the return material to be 400Gs. After the system was stabilized, it was measured that the Fe content in the finished titanium carbide-con...

Embodiment 2

[0025] Contains TiO 2 22% blast furnace slag reacts with coke powder at high temperature to produce slag containing 14.12% titanium carbide, and 4.2% Fe in the slag; after the carbide slag is crushed to less than 10mm, it is sent to the vertical mill for crushing. The production capacity is 5t / h. During the vertical mill process, the feed rate is adjusted to 7.5t / h (calculated on a dry basis). Control the pressure of the grinding roller to 5~6MPa, and the pressure difference between the inlet and outlet of the vertical mill to be 1.6kPa~1.8kPa. Realize that the returned material is 30-33% of the feed amount, and the mass fraction of Fe in the returned material is measured to be 4.9%. Adjust the current of the magnetic separator above the return material belt, and control the magnetic field strength on the return material to 650Gs. After the system is stable, the Fe content in the finished titanium carbide-containing slag is measured to be 2.3%, and the mass fraction of Fe ...

Embodiment 3

[0027] Contains TiO 2 22% blast furnace slag reacts with coke powder at high temperature to produce slag containing 14.12% titanium carbide, and 4.2% Fe in the slag; after the carbide slag is crushed to less than 10mm, it is sent to the vertical mill for crushing. The production capacity is 5t / h. During the vertical milling process, the feed rate is adjusted to 9t / h (calculated on a dry basis). The roller pressure is controlled to be 6-7MPa, the pressure difference between the inlet and outlet of the vertical mill is 1.8kPa-2.1kPa, and the returned material is 43-45% of the feeding amount, and the mass fraction of Fe in the returned material is measured to be 3.0%. Adjust the current of the magnetic separator above the return material belt, and control the magnetic field strength on the return material to 800Gs. After the system is stable, the measured Fe content in the finished titanium carbide-containing slag is 2.5%, and the mass fraction of Fe in the magnetically separa...

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Abstract

The invention belongs to the field of metallurgy, and particularly relates to a method for iron removal of titanium carbide containing furnace slag, aiming at solving the technical problem of the prior art that subsequent titanium tetrachloride production procedure is affected due to too high iron content in the titanium carbide containing furnace slag. The method comprises the following steps: smashing the titanium carbide containing furnace slag by using a vertical mill process, wherein the returning charge amount is controlled to be 5-45% of the feeding amount in the vertical mill smashingprocess; performing iron removal by magnetic separation on the obtained returned material; sending the returned material after iron removal by magnetic separation into the feeding system for further smashing; sending fine powder obtained by smashing to a collecting system via a vertical mill discharge hole, so as to obtain qualified titanium carbide furnace slag. The method has the advantages of being simple in process, low in cost, high in iron removal efficiency and the like, can effectively separate titanium carbide and iron in the titanium carbide containing furnace slag, and meets the requirement of subsequent process for the iron content in the titanium carbide containing furnace slag powder material.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a method for removing iron from slag containing titanium carbide. technical background [0002] Panxi area is rich in vanadium-titanium magnetite resources. Through the traditional blast furnace ironmaking-converter steelmaking process, most of the titanium enters the blast furnace slag, and the TiO in the blast furnace slag 2 The content is 20% to 26%. Aiming at Panzhihua Iron and Steel's blast furnace slag, many domestic research institutions have carried out research on various technical routes for titanium extraction, such as the production of silicon-titanium composite alloys and the production of slag glass-ceramic, etc., but the processing capacity is limited and cannot fundamentally solve the problem of high titanium content Comprehensive utilization of slag. At present, titanium-containing blast furnace slag "high temperature carbonization - low temperature chlorination to pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C15/00B02C23/08B03C1/02C21B3/04
CPCB02C15/00B02C23/08B03C1/02C21B3/04Y02W30/50
Inventor 王东生张溅波赵青娥黄家旭
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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