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Method for reducing acidolysis solid matters in titanium dioxide production process

A production process and technology of titanium dioxide, applied in the direction of titanium compounds, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problem that there are too many residual solids in the acidolysis tank, the heat dissipation of the main reaction is not timely, and the pressure air stirring is not enough. Uniformity and other problems, to achieve the stability of various indicators, reduce the risk of running the pot, and reduce the effect of solid phase

Inactive Publication Date: 2020-01-10
XIANGYANG LOMON TITANIUM IND CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0004] Aiming at the problem that in the existing ilmenite acidolysis leaching process, there are many residual solid phases in the acidolysis tank, which causes uneven pressure and stirring, and leads to the problem that the heat dissipation of the main reaction is not timely and there is a boiler, the invention provides a method to reduce the production of titanium dioxide. The method of acid-decomposing solid-phase substances in the process aims to avoid early hydrolysis through the adjustment of process parameters, and at the same time make the generated solid-phase substances easier to be dissolved and acid-hydrolyzed

Method used

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  • Method for reducing acidolysis solid matters in titanium dioxide production process

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Embodiment 1

[0047] The steps of this embodiment and the amount of addition of each material are consistent with those of the comparative example, the difference is only that the process parameters of the process of adding leaching water have been adjusted, specifically:

[0048] 1. After the two steps of acidolysis and aging in the acidolysis reactor, check whether the material condition in the acidolysis tank is normal.

[0049]2. The main operator of acid hydrolysis sets the amount of leaching water and small amount of water according to the process requirements. After the delay of blowing the solid phase for 15 minutes, the main operator judges whether the leaching can be performed, and then starts the acid hydrolysis tank for leaching. Water intake manual valve.

[0050] 3. The main operator of acid hydrolysis opens the manual valve of the leaching water of the acid hydrolysis tank, closes the manual valves of the leaching water of other related acid hydrolysis tanks, and judges that ...

Embodiment 2

[0060] The steps of this embodiment and the addition amount of each material are consistent with the comparative example, the only difference is that the process parameters of the process of adding leaching water and the air flow rate of each step have been adjusted, specifically:

[0061] 1. After the two steps of acidolysis and aging in the acidolysis reactor, check whether the material condition in the acidolysis tank is normal.

[0062] 2. The main operator of acid hydrolysis sets the amount of leaching water and small amount of water according to the process requirements. After the delay of blowing the solid phase for 15 minutes, the main operator judges whether leaching can be carried out, and then starts the acid hydrolysis tank for leaching. Water intake manual valve.

[0063] 3. The main operator of acid hydrolysis opens the manual valve of the leaching water of the acid hydrolysis tank, closes the manual valves of the leaching water of other related acid hydrolysis t...

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Abstract

The invention belongs to the technical field of titanium dioxide production, particularly relates to a method for reducing acidolysis solid matters in the titanium dioxide production process, and aimsat the problem that in the existing ilmenite acidolysis leaching process, many solid-phase substances remain in an acidolysis tank to cause the situation that compressed air stirring is not uniform so as to cause the problem of pot overflowing due to untimely heat dissipation of the main reaction. According to the method, through comparative research on the acidolysis leaching water flow rate, leaching solid phase temperature, leaching empty flow rate, solid phase dissolving square quantity and acidolysis titanium liquid quality, the residual solid phase square quantity in the acidolysis tankis successfully reduced, the phenomenon of titaniferous solution early hydrolysis possibly caused by high temperature is avoided, and the potential safety hazard of acidolysis main reaction overflowing is reduced. The method is undoubtedly capable of reducing the overall production cost of titanium dioxide and improving the economic benefit for enterprises, and for the whole titanium dioxide industry, the new technology can relieve the dilemma that the production cost is sharply increased and promote the overall development of the titanium dioxide industry.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide production, and in particular relates to a method for reducing acidolysis solid phases in the production process of titanium dioxide. Background technique [0002] Titanium oxysulfate is produced by acidolysis of ferrotitanium powder and concentrated sulfuric acid, which is hydrolyzed to generate metatitanic acid, and then calcined and pulverized to obtain titanium dioxide products. This method can produce anatase and rutile titanium dioxide. [0003] The acid hydrolysis reaction of sulfuric acid and ilmenite is one of the key production processes of sulfuric acid titanium dioxide, and it is also one of the key positions that enterprises are most concerned about, because the reaction process of sulfuric acid and ilmenite has a high reaction terminal temperature, The heating speed is fast, and it is easy to appear the phenomenon of boiling pot or even frying pot. As a result, this process...

Claims

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Application Information

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IPC IPC(8): C01G23/053C01G23/00
CPCC01G23/008C01G23/0532
Inventor 彭本铃曾小林卢慧军王国锋秦望明
Owner XIANGYANG LOMON TITANIUM IND CO LTD
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