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Treatment method for titanium extraction from titanium-containing blast furnace slag based on vacuum carbothermal reduction

A treatment method and technology of blast furnace slag, which is applied in the field of metallurgical engineering, can solve the problems of difficulty in extracting titanium from titanium-containing blast furnace slag, high cost, and low titanium recovery rate, so as to reduce the cost of comprehensive utilization of resources, efficiently recycle, and shorten product production. The effect of the process

Inactive Publication Date: 2016-09-28
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a method for extracting titanium from titanium-containing blast furnace slag based on vacuum carbothermal reduction, which is used to effectively separate titanium from titanium-containing blast furnace slag and improve the recovery rate of titanium. Reduce the cost of titanium recovery, and solve the problems of high cost, low recovery rate of titanium, and difficulty in extracting titanium from titanium-containing blast furnace slag in the prior art

Method used

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  • Treatment method for titanium extraction from titanium-containing blast furnace slag based on vacuum carbothermal reduction
  • Treatment method for titanium extraction from titanium-containing blast furnace slag based on vacuum carbothermal reduction
  • Treatment method for titanium extraction from titanium-containing blast furnace slag based on vacuum carbothermal reduction

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Effect test

Embodiment 1

[0030] Titanium-containing blast furnace slag is selected from Panzhihua Iron and Steel Company’s on-site blast furnace slag, and its main phases are as follows figure 1 shown. The titanium-containing blast furnace slag is used as a raw material, and the titanium-containing blast furnace slag extraction treatment method based on vacuum carbothermal reduction of the present invention is used for processing, and the titanium is recovered. The specific method includes the following steps:

[0031] 1) After grinding carbon powder and titanium-containing blast furnace slag, mix them according to the mass ratio of 40:100 to obtain a mixed slag sample;

[0032] 2) Add an appropriate amount of water to the obtained mixed slag sample and press to make pellets to obtain a mixed slag sample pellet;

[0033] 3) At room temperature, put the mixed slag-like pellets into a corundum crucible and place them in a vacuum carbon tube furnace. Vacuum the vacuum carbon tube furnace. When the vacuu...

Embodiment 2

[0038] Titanium-containing blast furnace slag is selected from Panzhihua Iron and Steel Company’s on-site blast furnace slag, and its main phases are as follows figure 1 shown. The titanium-containing blast furnace slag is used as a raw material, and the titanium-containing blast furnace slag extraction treatment method based on vacuum carbothermal reduction of the present invention is used for processing, and the titanium is recovered. The specific method includes the following steps:

[0039] 1) After grinding carbon powder and titanium-containing blast furnace slag, mix them according to the mass ratio of 40:100 to obtain a mixed slag sample;

[0040] 2) Add an appropriate amount of water to the obtained mixed slag sample and press to make pellets to obtain a mixed slag sample pellet;

[0041] 3) At room temperature, put the mixed slag-like pellets into a corundum crucible and place them in a vacuum carbon tube furnace. Vacuum the vacuum carbon tube furnace. When the vacuu...

Embodiment 3

[0046] Titanium-containing blast furnace slag is selected from Panzhihua Iron and Steel Company’s on-site blast furnace slag, and its main phases are as follows figure 1 shown. The titanium-containing blast furnace slag is used as a raw material, and the titanium-containing blast furnace slag extraction treatment method based on vacuum carbothermal reduction of the present invention is used for processing, and the titanium is recovered. The specific method includes the following steps:

[0047]1) After grinding carbon powder and titanium-containing blast furnace slag, mix them according to the mass ratio of 40:100 to obtain a mixed slag sample;

[0048] 2) Add an appropriate amount of water to the obtained mixed slag sample and press to make pellets to obtain a mixed slag sample pellet;

[0049] 3) At room temperature, put the mixed slag-like pellets into a corundum crucible and place them in a vacuum carbon tube furnace. Vacuum the vacuum carbon tube furnace. When the vacuum...

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Abstract

The invention provides a treatment method for extracting titanium from titanium-containing blast furnace slag based on vacuum carbothermal reduction, which adopts a combined process of vacuum carbothermal reduction-acid leaching, and keeps the pressure in the vacuum carbon tube furnace at 101-100 Pa during the vacuum reduction process between, and maintain a high reduction temperature, so that the SiO2 that is difficult to reduce under normal pressure is reduced to SiO, and at the same time, the MgO in the titanium-containing blast furnace slag can be reduced to metal Mg, because both SiO and metal Mg have the characteristics of high vapor pressure , during the reduction process, they leave the reaction system with the vacuuming process, so that the silicon and titanium in the titanium-containing slag can be completely separated; after vacuum carbothermal reduction to obtain the reduced slag, other impurities in the slag are removed by acid leaching, and TiC products are obtained. And because the silicon and magnesium compounds in the slag have been removed in the vacuum carbothermal reduction process, the acid consumption in the acid leaching process can be greatly reduced, and the acid leaching time can also be shortened, so that the overall efficiency of titanium extraction is improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgical engineering, mainly relates to the technical field of titanium extraction technology from titanium-containing blast furnace slag, and in particular relates to a treatment method for extracting titanium from titanium-containing blast furnace slag based on vacuum carbothermal reduction. Background technique [0002] my country is rich in titanium resources, the reserves rank first in the world, and more than 90% of them are distributed in the Panzhihua-Xichang area as vanadium-titanium magnetite. At present, my country's titanium resources are mainly used to produce titanium dioxide, and the utilization rate is only about 30%. As the potential demand for titanium and titanium alloys in aerospace, marine, medical, biological, chemical and other fields increases, the efficient use of titanium resources is becoming more and more important. Judging from the current utilization process of vanadium...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/12C22B7/04C22B5/10C21B3/04
CPCY02P10/20Y02W30/50
Inventor 扈玫珑胡蒙均尹方庆魏瑞瑞吕学伟邓青宇许宇宙
Owner CHONGQING UNIV
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