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Hydrochloric-acid-method titanium yellow powder production technology

A hydrochloric acid method titanium yellow powder, production technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, calcium/strontium/barium halide, etc., can solve pollution and other problems

Inactive Publication Date: 2014-01-29
ZIGONG YATAI CHEM SCI & TECH CO LTD
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Problems solved by technology

[0004] The invention provides a hydrochloric acid method titanium yellow powder production technology, the purpose of which is to solve the shortcomings of the existing technology, to produce high-quality titanium yellow powder while solving its pollution problem and to obtain beneficial by-products

Method used

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specific Embodiment approach

[0021] When implementing the present invention, the selection of various parameters can be within the scope provided, according to the quality parameters of the titanium concentrate powder raw material obtained in advance, data such as impurities, the quality parameters of the product that needs to be obtained after calculation and selection:

[0022] A: First put the titanium concentrate powder into the leaching ball, close the feeding port of the leaching ball, add the preheated to 55°c-65°c, the concentration is 18~35% (the amount of hydrochloric acid is based on the amount of titanium concentrate Theoretical calculation of the hydrochloric acid consumed by various impurities (mainly Fe, Al, Mn, Ca, Mg and other oxides) that can react with hydrochloric acid. Then use 110%~160% of the theoretical value of hydrochloric acid to actually use) hydrochloric acid, The leaching ball is rotated, steam is passed into the leaching ball and heated to a temperature of 105°C-160°C, a pres...

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Abstract

The invention provides a hydrochloric-acid-method titanium yellow powder production technology. According to the technology, titanium concentrate powder is leached by hydrochloric acid, after leaching is ended, solid-liquid separation is carried out, and a filter cake is washed, is calcined at the temperature of 750-950 DEG C, is cooled and screened and then is packaged into titanium yellow powder finished products; leaching mother liquor obtained through mixing mother liquor and washing liquid is separated and is neutralized by lime milk (or carbide slag slurry) until the pH value is 9-13, then, solid-liquid separation is carried out, a filter cake is washed and then is calcined, so as to obtain FeO3, and washing liquid is subjected to evaporative concentration so as to obtain a CaCl2 product. The technology has the advantages that the problem of pollution is solved while titanium yellow powder with high quality is produced, and beneficial byproducts are obtained.

Description

technical field [0001] The invention belongs to a substance manufacturing process, in particular to a production process of titanium yellow powder. Background technique [0002] Titanium yellow powder is essentially a kind of TiO 2 product. Just its TiO 2 The content is slightly lower than titanium dioxide, the fineness is slightly coarser than titanium dioxide, and the color is light yellow. It can be used instead of titanium dioxide in ceramics, oil, coatings and other industries, and its price is much lower than titanium dioxide. [0003] The acidic liquid of filtering mother liquor and washing liquid (containing Fe, Al, Mn, Ca, Mg and other oxides and Hcl) in the original production. As waste liquid, the waste liquid is discharged after treatment, which will affect the environment and increase the production input. Therefore, how to produce titanium yellow powder and solve the problem of environmental pollution in the production process needs to improve the existing ...

Claims

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Application Information

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IPC IPC(8): C01G23/053C01F11/28C01G49/06
Inventor 苏锐周远之张光礼
Owner ZIGONG YATAI CHEM SCI & TECH CO LTD
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