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Purification method for titanium sulfate solution

A technology of titanium sulfate and titanium liquid, applied in chemical instruments and methods, titanium compounds, titanium and titanyl sulfate, etc., can solve the problems of reducing the concentration of titanium liquid, affecting the stable control of the quality of titanium liquid, and heavy workload , to achieve the effect of improving environmental conditions, good separation effect and improving efficiency

Inactive Publication Date: 2019-02-12
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

[0004] The hot filtration and fine filtration of titanium liquid generally adopt the method of plate and frame filtration. The plate and frame filtration is composed of filter plate, filter cloth and pressure system. After the titanium liquid is filtered, the filter cloth must be cleaned or even replaced from time to time. The flushing water will reduce the concentration of the titanium solution. If the filter cloth is damaged, the impurities in the titanium solution will enter the next process with the titanium solution, which will affect the stable control of the quality of the titanium solution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The titanium sulfate solution is input into the centrifuge, and the solid residue and the titanium solution are separated under the action of high-speed centrifugal force. The centrifugation is carried out at room temperature (25° C.), the centrifugation speed is 9000 rpm, and the centrifugation time is 10 minutes;

[0022] The above-mentioned titanium liquid after centrifugal separation is subjected to membrane separation at room temperature (25° C.) and a vacuum of 0.02 MPa to obtain purified titanium liquid.

[0023] Test the solid content of titanium sulfate liquid according to the following method:

[0024] Pour the titanium sulfate solution into a funnel with quantitative filter paper, filter under reduced pressure, and the solid residue remains on the filter paper. After pickling and washing with water, put the filter paper and solid residue into a crucible of known weight, and burn the filter paper at 800°C. The solid content in the titanium sulfate solution ca...

Embodiment 2

[0027] The titanium sulfate solution is input into the centrifuge, and the solid residue and the titanium solution are separated under the action of high-speed centrifugal force. The centrifugation is carried out at room temperature (25° C.), the centrifugation speed is 9000 rpm, and the centrifugation time is 10 minutes;

[0028] The titanium liquid after the centrifugal separation was subjected to membrane separation at room temperature (25° C.) and a vacuum of 0.03 MPa to obtain purified titanium liquid.

[0029] According to the method test of embodiment 1, the solid content in the initial titanium sulfate liquid of embodiment 2 is 600mg / L, and the content of titanium dioxide is 120g / L; After separation, the solid content of the titanium liquid is zero.

[0030] It can be known from the above examples that the present invention provides a method for purifying titanium sulfate liquid, comprising: subjecting titanium sulfate liquid to centrifugal separation and membrane sepa...

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Abstract

The invention provides a purification method for a titanium sulfate solution which comprises the step of performing centrifugal separation and membrane separation on the titanium sulfate solution to obtain a purified titanium solution. The purification method for the titanium solution disclosed by the invention has a simple technology, can achieve continuous operation, has smaller equipment volume, can effectively control acid gas to be exhausted out, can improve the environment condition of a titanium solution purification procedure and achieves green production. As equipment used by the purification method disclosed by the invention is simple, the purification method is easy to implement and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of titanium sulfate solution, in particular to a method for purifying titanium sulfate solution. Background technique [0002] Purification of titanium sulfate solution is a heavy step in the production of titanium white by sulfuric acid method. Its purpose is to remove the tiny suspended solids existing in the titanium solution, so that the titanium solution has good cleanliness. The cleanliness of titanium liquid has an important influence on the quality of titanium dioxide produced in subsequent processes. In the prior art, the purification of titanium liquid generally adopts the method of filtration, and the plate and frame filter press is a gravimetric method for purification of titanium liquid, which is widely used in the industrial production of titanium dioxide by sulfuric acid method. [0003] The production of titanium dioxide by sulfuric acid method begins with the acid hydrolysis process. Under ...

Claims

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Application Information

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IPC IPC(8): C01G23/00
CPCC01G23/008
Inventor 吴小平刘勇
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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