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Cover type defoamer and acidolysis process for preparing titanium white powder by sulfuric acid method

A defoamer and bell-type technology, which is applied in the field of acid hydrolysis, can solve the problems of hidden safety hazards, increase production costs, reduce production capacity, etc., and achieve the effect of restraining growth

Inactive Publication Date: 2013-01-09
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reaction process of mixing titanium raw materials and concentrated sulfuric acid in the acidolysis pot will generate a large amount of foam instantly. In order to prevent the risk of foam from appearing in the pot without affecting the normal acidolysis process, the current appropriate method is to reduce the amount of titanium per batch. Input amount of raw materials or adding defoamer
However, reducing the input of titanium raw materials will reduce the production capacity per unit time, and adding defoamers will increase production costs, and the defoaming effect is not good, and there are certain safety hazards

Method used

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  • Cover type defoamer and acidolysis process for preparing titanium white powder by sulfuric acid method
  • Cover type defoamer and acidolysis process for preparing titanium white powder by sulfuric acid method
  • Cover type defoamer and acidolysis process for preparing titanium white powder by sulfuric acid method

Examples

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Effect test

Embodiment 1

[0034] Example 1: The volume is 30m 3 Put 12.9t of concentrated sulfuric acid with a concentration of 92% into the acid hydrolysis pot, turn on compressed air to stir, and then put 7.8t titanium concentrate into the acid hydrolysis pot; when the concentrated sulfuric acid and titanium concentrate are evenly mixed, add starting water to start Main reaction; when the main reaction is about to occur, open valve K3, compressed air is blown into the acid hydrolysis pot through the compressed air defoaming spray gun 4, according to the actual situation of the reaction, the amount of compressed air blown can be adjusted appropriately; after the main reaction, close the valve K3, compressed gas defoaming spray gun 4 stops jetting.

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PUM

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Abstract

The invention discloses a cover type defoamer with a defoaming function. The cover type defoamer comprises a seal cover piece provided with a gas releasing opening and a plurality of compressed gas defoaming spray guns arranged on the seal cover piece, wherein nozzles of the compressed gas defoaming spray guns point to a reaction vessel matched with the seal cover piece. By using the cover type defoamer, an acidolysis process for preparing titanium white powder by an improved sulfuric acid method comprises the following steps of: a, uniformly mixing a titanium raw material and concentrated sulfuric acid in an acidolysis pot and adding starting water to initiate a main reaction; b, starting the compressed gas defoaming spray guns in the cover type defoamer; and c, shutting off the compressed gas defoaming spray guns after the main reaction is finished. In the cover type defoamer, foams in the reaction vessel are broken by the impact effect of compressed gas, and the foams are broken forcibly to release a large quantity of gases, so that the defoamer can be used for restraining the increase of foam volume, has a defoaming effect and is suitable for a plurality of types of acidolysisprocesses.

Description

Technical field [0001] The application relates to a defoaming device for eliminating foam generated in a reaction vessel. [0002] This application also relates to an improved acid hydrolysis process for preparing titanium dioxide by the sulfuric acid method after using the above-mentioned defoaming device. Background technique [0003] In the production industry that uses sulfuric acid to prepare titanium dioxide, the preparation of titanium solution is usually carried out in an acid hydrolysis pot. The main reaction of titanium raw material and concentrated sulfuric acid in the acid hydrolysis pot will produce a large amount of foam instantly. In order to prevent the foam from taking the risk of the pot without affecting the normal acid hydrolysis process, the current suitable method can only be to reduce each batch of titanium. The amount of raw materials or defoamer added. However, reducing the input of titanium raw materials will reduce the productivity per unit time, and ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053
Inventor 王斌石瑞成吴健春程晓哲路瑞芳
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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