Method for preparing nano barium sulfate and co-producing sodium chloride

A nano-barium sulfate and sodium chloride technology, applied in the direction of alkali metal chloride, calcium/strontium/barium sulfate, etc., can solve the problems of high cost, complicated production process and equipment, and achieve low cost, high economic value, The effect of simple process and equipment

Inactive Publication Date: 2010-09-22
王嘉兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art still has the disadvantages of complex production process and equipment and high cost, and there is no relevant report on the method of preparing precipitated barium sulfate and co-producing hydrochloric acid with barium slag at present.

Method used

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  • Method for preparing nano barium sulfate and co-producing sodium chloride
  • Method for preparing nano barium sulfate and co-producing sodium chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing nano barium sulfate to co-produce sodium chloride, the preparation process is:

[0020] Dissolve 500 kilograms of barium chloride in water, inject it into the reactor through the barium chloride feeding line 5 after being treated with 4% phthalate coupling agent; then pass the dissolved sodium sulfate through the sodium sulfate feeding line 6 Inject into reactor 1, wherein the mass ratio of barium chloride and sodium sulfate in the reactor is 1:0.38 according to the mass ratio of pure substance; then stir evenly with the rotating speed of 300 rev / min, chemical reaction obtains the mixed liquid of barium sulfate and sodium chloride Mixed liquid gets filter cake and filtrate through centrifuge 2 filtration, and filter cake is dried and pulverized by drier 3, pulverizer 4 drying successively after washing, and packing obtains 312.2 kilograms of nanometer barium sulfate products; Described filtrate is through decompression distillation Get Sodium Chlo...

Embodiment 2

[0022] A method for preparing nano barium sulfate to co-produce sodium chloride, the preparation process is:

[0023] Dissolve 500 kg of barium chloride in water, treat it with 5% lignin and inject it into the reactor through the barium chloride feeding line 5; then inject the dissolved sodium sulfate into the reactor 1 through the sodium sulfate feeding line 6 , wherein barium chloride in the reactor and sodium sulfate are 1: 0.68 by the mass ratio of pure substance; Then with the rotating speed of 400 revolutions / minutes uniform stirring, chemical reaction obtains the mixed liquid of barium sulfate and sodium chloride; Mixed liquid passes through Centrifuge 2 is filtered to obtain filter cake and filtrate, and filter cake is dried and pulverized by drier 3, pulverizer 4 successively after washing, and packaging obtains 558.7 kilograms of nanometer barium sulfate products; Described filtrate obtains sodium chloride through vacuum distillation .

Embodiment 3

[0025] A method for preparing nano barium sulfate to co-produce sodium chloride, the preparation process is:

[0026] First 500 kilograms of barium chloride are dissolved in water, and after being treated with 8% surfactant (wherein stearic acid 1%, lignin 7%), inject in the reactor by barium chloride feeding line 5; Sodium sulfate is injected into reactor 1 through sodium sulfate feeding line 6, wherein barium chloride in the reactor is 1: 0.98 by the mass ratio of sodium sulfate by pure substance; Obtain the mixed liquid of barium sulfate and sodium chloride; The mixed liquid is filtered through centrifuge 2 to obtain filter cake and filtrate, and the filter cake is dried and pulverized by drying machine 3 and pulverizer 4 successively after washing, and packaging obtains 560.1 kilograms of nanometer sulfuric acid Barium product; the filtrate was distilled under reduced pressure to obtain sodium chloride.

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Abstract

The invention relates to the technical field of preparing filling materials, in particular to a method for preparing nano barium sulfate and co-producing sodium chloride. The main technical scheme is that the method comprises the following steps of: reacting barium chloride with sodium sulfate to obtain barium sulfate and sodium chloride first; drying the barium sulfate; and crushing the barium sulfate to obtain nano barium sulfate. The method has a simple production process, simple equipment and a low cost, not only can prepare a target product namely the nano barium sulfate, but also can co-produce the sodium chloride, and create a very high economic value.

Description

technical field [0001] The invention relates to the technical field of filler preparation, in particular to a method for preparing nano-barium sulfate and co-producing sodium chloride. Background technique [0002] Barite is a non-renewable resource and one of my country's export-oriented mineral products. It is widely used as a weighting agent for oil and natural gas drilling mud, and its consumption in barium chemicals and fillers is also increasing year by year. my country's barite resources are quite rich, distributed in 21 provinces (regions) across the country, with a total reserve of 360 million tons of ore, ranking first in the world. Among them, barium sulfate has the following extensive purposes because it is insoluble in water and acid: [0003] Used as raw materials or fillers for paints, inks, plastics, advertising pigments, cosmetics, batteries, rubber products as fillers and reinforcements, polyvinyl chloride resins as fillers and weighting agents, printing ...

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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