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Method and device for preparing titanium solution from fluidized acidolysis titanium-containing material

A fluidization and acidolysis solution technology, applied in the direction of titanium oxide/hydroxide, titanium dioxide, etc., can solve the problems of limited sulfuric acid titanium dioxide production, early hydrolysis of titanium solution, long reaction time, etc., to achieve low cost, Saving dosage, good effect of fluidization

Inactive Publication Date: 2014-01-01
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction of the solid-phase acid hydrolysis operation is fast and violent, and can be completed within a few minutes. The acid hydrolysis rate is high, but with the solid-phase acid hydrolysis reaction, a large amount of SO containing 2 , SO 3 The acid mist gas and the environmental pollution caused by waste acid waste gas discharge limit the production of sulfuric acid titanium dioxide process
[0008] The advantages of acidolysis of ilmenite with dilute acid are obvious, but the reaction time is long in low-concentration acidolysis, which is easy to cause problems such as early hydrolysis of titanium liquid, and at the same time, the acidolysis rate is low

Method used

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  • Method and device for preparing titanium solution from fluidized acidolysis titanium-containing material
  • Method and device for preparing titanium solution from fluidized acidolysis titanium-containing material

Examples

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example 1

[0041] In the acid distribution tank, according to 20m 3 Hydrochloric acid, mixed with 128m 3 The proportion of water is prepared to make an acid concentration of 5% hydrochloric acid solution, pump the prepared acid into the circulation tank, use the circulation pump to pump the acid solution into the fluidized reactor, and use it when the acid solution enters the fluidized reactor Graphite heat exchanger is heated, and the steam flow rate is controlled to heat the acid solution to 80°C; by controlling the opening of the discharge valve under the silo, the feeding amount of titanium concentrate is controlled to be 1.5t / h, and the titanium concentrate is directly added to the fluidization reaction In the reaction section of the reactor, the particle size of the titanium concentrate is -325 mesh, and the flow rate of the acid solution is controlled to be 10m by adjusting the outlet valve of the circulating pump. 3 / h, so that the titanium concentrate is in a fluidized state in...

example 2

[0043] In the acid distribution tank, according to 20m 3 Hydrochloric acid, add 15m 3 The proportion of water is prepared to make an acid concentration of 22% hydrochloric acid solution, pump the prepared acid into the circulation tank, use the circulation pump to pump the acid solution into the fluidized reactor, and use it when the acid solution enters the fluidized reactor Graphite heat exchanger is heated, and the steam flow rate is controlled to heat the acid solution to 80°C; by controlling the opening of the discharge valve under the silo, the feeding amount of titanium concentrate is controlled to be 1.5t / h, and the titanium concentrate is directly added to the fluidization reaction In the reaction section of the reactor, the particle size of the titanium concentrate is -325 mesh, and the flow rate of the acid solution is controlled to 12m by adjusting the outlet valve of the pump. 3 / h, so that the titanium concentrate is in a fluidized state in the fluidized reactor...

example 3

[0045] In the acid distribution tank, according to the 5m 3 Hydrochloric acid, mix into 30m 3 The proportion of regenerated hydrochloric acid is prepared into a hydrochloric acid solution with an acid concentration of 23%, and the prepared acid is pumped into the circulation tank, and the acid solution is pumped into the fluidized reactor using a circulation pump. During the process of the acid solution entering the fluidized reactor Use a graphite heat exchanger to heat, control the steam flow to heat the acid solution to 70°C; by controlling the opening of the discharge valve under the silo, control the feeding amount of the titanium concentrate to 1.5t / h, and directly add the titanium concentrate to the fluidization In the reaction section of the reactor, the particle size of the titanium concentrate is -325 mesh, and the flow rate of the acid solution is controlled to be 12m by adjusting the outlet valve of the pump. 3 / h, so that the titanium concentrate is in a fluidize...

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Abstract

The invention provides a method and device for preparing a titanium solution from a fluidized acidolysis titanium-containing material. The method comprises the following steps: a titanium-containing material and an acid solution are added into a fluidization reactor, and the titanium-containing material is subjected to acidolysis reaction in a fluidization reaction region formed by the acid solution, wherein the reaction temperature is 70-100 DEG C; an acidolysis solution generated by the acidolysis reaction overflows from the fluidization reactor, and is compounded with fresh acid to form an acid solution so as to return to the fluidization reactor for further acidolysis; and when the titanium content in the acidolysis solution reaches a required value, the overflowing acidolysis solution is diverted to form a first branch and a second branch, wherein the acidolysis solution in the first branch further returns to the acidolysis step, and the acidolysis solution in the second branch is filtered to obtain the titanium solution. According to the method, acidolysis is performed on the titanium solution through a fluidization technology, the titanium content in the titanium solution can be controlled by controlling the diversion timing and the diversion flow rate in the acidolysis process, and continuous production can be realized. Besides, the method has the advantages of simple process, high acidolysis rate, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of preparing titanium liquid, and more specifically, relates to a method and a device for preparing titanium liquid by fluidized fluidized acidolysis of titanium-containing materials. Background technique [0002] Titanium dioxide scientific name titanium dioxide (TiO 2 ) has the best opacity, best whiteness and brightness, and is considered to be the most excellent white pigment in the world. It is widely used in coatings, plastics, paper making, printing ink, chemical fiber, rubber, ceramics, cosmetics, food and medicine and other industries. At present, its production process is mainly divided into sulfuric acid method and chlorination method. [0003] Panxi area has abundant titanium resources, but its calcium and magnesium content is high, so it is difficult to be used as raw materials for high-end titanium industries such as chloride titanium dioxide and sponge titanium. The production of titanium di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053
Inventor 税必刚程晓哲马维平叶恩东龙飞虎刘小兰
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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