Method for preparing nano-barium sulfate coproducing sodium chloride

A technology of nanometer barium sulfate and sodium chloride, applied in the direction of alkali metal chloride, calcium/strontium/barium sulfate, etc., can solve the problems of large amount of material transportation, complicated production equipment, low production yield, etc., and achieves the method Simple and clear, high profit and high productivity

Inactive Publication Date: 2010-02-03
王嘉兴
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the production yield of this method is low, and the large amount

Method used

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  • Method for preparing nano-barium sulfate coproducing sodium chloride

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Embodiment 1

[0010] Embodiment one: 500 kilograms of barium chloride (5) are dissolved in water and are injected into reactor (1) li with the mass ratio of pure matter 1: 0.38 after the tensio-active agent treatment of 1% and dissolving At the same time, stir evenly at a speed of 300 rpm, carry out a chemical reaction to obtain a mixed liquid of barium sulfate and sodium chloride, centrifuge (2) and filter to obtain a filter cake precipitated barium sulfate, then wash, dry (3), and pulverize (4) , packaged to obtain a 311.76-nm barium sulfate product, and the filtrate was distilled under reduced pressure to obtain the industrial salt sodium chloride. Its chemical reaction equation is:

Embodiment 2

[0011] Embodiment two: 500 kilograms of barium chloride (5) are dissolved in water and are injected into reactor (1) li with the mass ratio 1: 0.98 of the mass ratio of pure substance after 3% tensio-active agent is processed respectively Stir evenly at a speed of 500 rev / min, carry out a chemical reaction to obtain a mixed liquid of barium sulfate and sodium chloride, centrifuge (2) filter to obtain filter cake precipitated barium sulfate and then wash, dry (3), pulverize (4), Packing obtains 560.1 kilograms of sodium barium sulfate products, and the filtrate obtains industrial salt sodium chloride through vacuum distillation.

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Abstract

The invention discloses a method for preparing nano-barium sulfate coproducing sodium chloride. The method is technically characterized in that barium chloride and sodium sulfate undergo reaction according to a certain proportion and then filtration so as to obtain precipitated barium sulfate and sodium chloride. A filter cake obtained from the filtration is washed, dried, crushed and then packaged into a nano-barium sulfate product. The filtrate obtained from the filtration undergoes reduced pressure distillation so as to obtain an industrial salt sodium chloride product. The method is simple, fast and clear and particularly suitable for the production of high-grade precipitated barium sulfate by utilizing low-grade barium chloride and sodium sulfate. The method has simple production process and apparatus and achieves extremely high yield and great profit.

Description

Technical field: [0001] The invention relates to the technical field of filler preparation, in particular to a method for preparing nanometer barium sulfate and co-producing sodium chloride. technical background: [0002] There are many ways to produce precipitated barium sulfate, mainly barium ore production. However, the production yield of this method is low, and a large amount of material transportation leads to complex and huge production equipment. The method of preparing precipitated barium sulfate with barium chloride and sodium sulfate is simple and clear, especially the production of high-grade precipitated barium sulfate with low-grade barium chloride and sodium sulfate, the production process and equipment are simple, the yield is huge, and the profit is very high. Invention content: [0003] The invention provides a method for preparing precipitated barium sulfate to co-produce sodium chloride. This method is simple and clear, especially for producing high-gr...

Claims

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Application Information

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IPC IPC(8): C01F11/46C01D3/04
Inventor 王嘉兴
Owner 王嘉兴
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