Dechlorination method for chlorination process titanium extracting tailing slag

A technology of extracting titanium tailings and chlorination, which is applied in the field of metallurgy to achieve the effect of reducing adverse effects

Inactive Publication Date: 2016-03-09
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no relevant report on the on-line dechlorination process of titanium tailings by chlorination

Method used

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  • Dechlorination method for chlorination process titanium extracting tailing slag

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Embodiment 1

[0027] The described method uses the titanium extraction tailings after "high-temperature carbonization-low-temperature chlorination" of Panzhihua Iron and Steel as raw material for processing. The chloride ion content of the titanium extraction tailings is between 2.0% and 4.07%.

[0028] The specific chlorine removal method is:

[0029] The tailings and water are mixed in a volume ratio of 1:2 to 4, soaked and stirred for 5 to 10 minutes, and then vacuum filtered. The vacuum is between 0.06 and 0.08 MPa to obtain a wash filtrate;

[0030] Then, in accordance with the ratio of slag water mass of 1:2 to 4, water is added for secondary washing, three washings and four washings in sequence; the ion mass fraction in the obtained preliminary dechlorination tailings can be reduced to less than 0.2%;

[0031] Among them, the four-wash filtrate is used as the third-wash water, the three-wash filtrate is used as the second-wash water, and the second-wash filtrate is used as the first-wash wat...

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Abstract

The invention relates to a dechlorination process for chlorination process titanium extracting tailing slag, and belongs to the field of metallurgy. A dechlorination method for chlorination process titanium extracting tailing slag includes the steps that the chlorination process titanium extracting tailing slag and water are stirred and mixed to form slurry, wherein the slag to water mass ratio is 1:2-4; and then qualified titanium extracting tailing slag is obtained in a filtering, washing and filtering manner, wherein the qualified titanium extracting tailing slag meets the condition that the chlorine ion content is lower than 0.2%, the water content is 12% by weight to 20% by weight. According to the dechlorination method, the stirring and filtering manner is adopted, the content of chloride ions in the chlorination process titanium extracting tailing slag can be effectively reduced, and the adverse effect of the chlorine ions in tailing slag comprehensive utilization is reduced; in addition, the stirring, filtering and burning manner is further used, free carbon in the tailing slag is removed, the color of the tailing slag is changed from black to grayish yellow, and application of the tailing slag to building materials is facilitated; butt joint of the tailing slag processing process and the Panzhihua steel high temperature carbonization and low temperature chlorination titanium contained blast furnace slag titanium extracting process is achieved; and the blank on the chlorination process titanium extracting tailing slag chlorination technology is filled.

Description

Technical field [0001] The invention is a process for removing chlorine from titanium tailings extracted by a chloride method, and belongs to the field of metallurgy. Background technique [0002] Panzhihua Iron and Steel adopts the process of smelting vanadium-titanium magnetite in an ordinary blast furnace to achieve large-scale economic smelting of vanadium-titanium magnetite. However, due to the special properties of the mine, TiO, which accounts for about 52% of the total titanium resources 2 As the iron concentrate enters the blast furnace slag, TiO is formed 2 High-titanium blast furnace slag with a content of 21%-25%. Panzhihua Iron and Steel Co., Ltd. can convert the TiO 2 Take TiCl 4 It can be used as raw material for sponge titanium or chloride titanium dioxide. The blast furnace slag after titanium extraction is called titanium extraction tailings. Because the titanium extraction tailings contain a large amount of chloride ions, it hinders its large-scale utilization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B34/12
CPCC22B7/04C22B34/12Y02P10/20
Inventor 王云王建鑫周艾然黄富勤杨仰军陆平
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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