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A method for removing calcium and magnesium impurities in titanium slag by using modified additives

An additive, titanium slag technology, applied in the direction of improving process efficiency, can solve the problems of restricting the scope of use of titanium purification industrial raw materials, increasing operating costs, etc., to achieve the effect of increasing the contact area, improving the utilization efficiency, and reducing the relative addition amount

Inactive Publication Date: 2018-01-05
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These factors restrict the range of raw materials used in the titanium purification industry and also increase operating costs

Method used

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  • A method for removing calcium and magnesium impurities in titanium slag by using modified additives
  • A method for removing calcium and magnesium impurities in titanium slag by using modified additives
  • A method for removing calcium and magnesium impurities in titanium slag by using modified additives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this example, titanium slag produced by a certain factory was used as raw material, and different types of modified additives were simulated to remove calcium and magnesium impurities in titanium slag under laboratory conditions, and the effects were analyzed to select suitable modifying additives.

[0029] Take 3 parts of titanium slag, add the same amount (8%) of modifying additives respectively, and compare different types of additives to remove titanium under the conditions of determining the leaching process parameters (the mass fraction of hydrochloric acid is 5%, the leaching temperature is 85°C, and the leaching time is 30min). The effect of slag calcium and magnesium impurities. Under this leaching process parameter, with the type of additive amount as a variable, the type of modified additive designed is B 2 o 3 、Na 2 CO 3 and Na 2 B 4 o 7 authenticating:

[0030] 1) Take 3 parts of titanium slag with a mass of 200g and place it in an induction furna...

Embodiment 2

[0037] In this embodiment, the titanium slag produced by a certain factory is used as the raw material, and the method for removing calcium and magnesium impurities of the present invention is simulated under laboratory conditions, and the effect is analyzed and tested. First, analyze the main component information of titanium slag; analyze the phase composition information of titanium slag and the occurrence state of calcium and magnesium impurities; according to the composition and phase of titanium slag, theoretically calculate the amount of additives required for titanium slag modification, and conduct related experiments Determine the optimal additive dosage and leaching process parameters; then, when the actual titanium slag is produced and slag is produced, add the additive ratio determined by research into the titanium slag, make it fully mixed, and cool naturally with the slag tank, and then press the acid obtained from the research The leaching process parameters are ...

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PUM

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Abstract

The invention discloses a method for removing magnesium and calcium impurities in titanium slag with a modifying additive. According to the composition and the phase of titanium slag, the B2O3 quantity required for modifying the titanium slag is calculated, and by studying the determination, B2O3 is added in the titanium slag proportionally, so that B2O3 and the titanium slag are sufficiently and uniformly mixed, the mixture is naturally cooled in a slag ladle, and the magnesium and calcium impurities in the titanium slag are leached to obtain the titanium slag raw material with the qualified content of the magnesium and calcium impurities. B2O3 is used as the modifying additive, so that the using amount of the modifying additive is reduced greatly, and new elements are not introduced when the magnesium and calcium impurities are removed; and besides, the magnesium and calcium impurities are removed according to the method, so that the leaching time can be shortened greatly, and the cost is beneficial for being reduced.

Description

technical field [0001] The invention belongs to the technical field of titanium slag removal, and in particular relates to a method for removing calcium and magnesium impurities in titanium slag by using a modified additive. Background technique [0002] Titanium is an ideal structural material and excellent corrosion-resistant material, and is widely used in aviation, aerospace, ships, weapons, chemicals, metallurgy, electric power, marine engineering, medicine, automotive sports goods and other industries. Titanium dioxide has excellent pigment properties and can be said to be one of the best white pigments. Titanium dioxide pigments are mainly used in coatings, inks, plastics, paper, chemical fibers and rubber. Titanium and titanium dioxide are made of TiCl 4 produced, so TiCl 4 It is an important raw material for the production of titanium industry. [0003] The Xichang area of ​​Panzhihua is rich in vanadium-titanium magnetite resources, among which the reserves of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/12
CPCC22B34/1209C22B34/1213Y02P10/20
Inventor 段华美李元坤范鹤林龙木军陈登福白林杜星宏
Owner CHONGQING UNIV