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Method for preparing TiCl4 from titanium-containing furnace slag

A technology of titanium slag and slag, which is applied in the field of intermediate products prepared from titanium-containing slag, can solve the problems of complex growing process, increased slag viscosity, and affecting the quality of the furnace, and achieves short process flow, low reduction temperature, and resource utilization. high effect

Active Publication Date: 2009-04-29
PANGANG GROUP RESEARCH INSTITUTE CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is to first carry out high-temperature carbonization reduction treatment in an electric furnace, and then carry out low-temperature chlorination to prepare TiCl 4 , the carbonization temperature is as high as 1600℃~1800℃, so that most of the substances in the slag are in a molten state, and the TiC produced in the carbonization process will increase the viscosity of the reduced slag sharply, thus affecting the quality of the slag.
[0005] Chinese patent 200410087636.0 also discloses a method for enriching titanium in titanium-containing slag and growing it into TiN, but this patent needs to add mineralizer and the growth process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Using TiO 2 Titanium-containing slag with a content of 38.31% is used as a raw material, and the titanium-containing slag is about 3 kg. Anthracite is used as a reducing agent. Crush titanium-containing slag and anthracite to 80 mesh to 200 mesh and mix until uniform, mix 170ml of polyvinyl alcohol solution (prepared with water and polyvinyl alcohol 20:1) and 320ml of water as a binder, and mix the homogeneous The titanium-containing slag mixture and the binder are put into a disc pelletizer to prepare balls, and the particle size of the balls is 10-12mm. The prepared pellets were dried naturally and put into a silicon molybdenum rod resistance furnace, fed with nitrogen gas with a flow rate of 2L / min, and kept at 1350°C for 4 hours.

Embodiment 2

[0019] Using TiO 2 Titanium-containing slag with a content of 34.7% is used as raw material, about 50kg of titanium-containing slag, 11kg of coke powder is used as a reducing agent, the titanium-containing slag and coke powder are crushed to 80 mesh to 200 mesh and mixed until uniform, and water glass is used as a binder , the amount of water glass added is 5% of the titanium-containing slag, and the titanium-containing slag, coke powder, and water glass are mixed uniformly in the grinding pan, and the material ball is prepared on the ball press machine, and the pressed ball is an ellipsoid (about 5 cm long and wide About 3cm, about 2cm high). The prepared pellets were put into graphite crucible after natural drying, and the graphite crucible was put into a tunnel kiln for reduction and nitriding treatment. Nitrogen gas with a flow rate of 18L / min was introduced and kept at 1500°C for 8 hours.

Embodiment 3

[0021] Using TiO 2 Titanium-containing slag with a content of 45% is used as raw material, about 85kg of titanium-containing slag, 30kg of bituminous coal as a reducing agent, bentonite as a binder, and the addition amount is 1.5% of the titanium-containing slag, and the titanium-containing slag and bituminous coal are crushed to 100 Between ~200 mesh and mix with bentonite until uniform, add water in a disc pelletizer to form pellets, the particle size of the pellets is 6-8mm. The prepared pellets are put into the shaft furnace, and the pellets are dried on the top of the shaft furnace. Nitrogen gas with a flow rate of 21 L / min is introduced into the lower part of the shaft furnace, and reduction nitriding is carried out in the high temperature zone in the middle of the shaft furnace. The reduction nitriding temperature is 1200 ~1250°C, reduction time 6 hours.

[0022] Table 1 Chemical composition of anthracite %

[0023] Element FCd Vd ad S content 78...

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Abstract

The invention discloses a method for preparing TiCl4 through titanium-contained slag. The TiO2 content in the slag is 30 to 45 percent. The method is characterized in that the titanium-contained slag is directly reduced at a high temperature; and the reduced slag is used to prepare the TiCl4 through low-temperature boiling chlorination. According to the method, the titanium-contained slag, a reducer and a binding agent are mixed evenly and are used to make pellets; the pellets are reduced at the high temperature; the reduced pellets are crushed after being cooled down; and then the TiCl4 is obtained through the low-temperature boiling chlorination. The method has the advantages of low reducing temperature, short technical process, high total titanium recovery rate, and the like.

Description

technical field [0001] The invention relates to the technical fields of metallurgy and chemical industry, in particular to a TiO 2 Preparation of intermediate product TiCl from titanium-containing slag with a content of 30% to 45% 4 Methods. Background technique [0002] The titanium-containing slag discharged in the smelting and production of titanium products is a rich titanium resource. Ti in titanium-containing slag is TiO 2 The form occurs in each mineral, except TiO 2 In addition, it also contains high MgO, CaO, SiO 2 If impurities such as titanium are directly treated as waste residue, it will cause a large loss and waste of titanium resources. Therefore, recycling titanium-containing slag through technical treatment can not only obtain good economic benefits, but also improve the environment, and its social benefits are very significant. [0003] At present, there is a process of producing titanium dioxide by acid leaching by sulfuric acid method, but the white...

Claims

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Application Information

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IPC IPC(8): C22B34/12C22B7/04C01G23/02
CPCY02P10/20
Inventor 张继东赵青娥
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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