Method for preparing barium sulfate

A technology for precipitating barium sulfate and barium sulfide, applied in the direction of calcium/strontium/barium sulfate, etc., can solve the problems of high energy consumption, unfavorable environmental protection, unstable product quality, etc., achieve environmental protection improvement, save washing water, and good reaction effect Effect

Inactive Publication Date: 2008-12-31
ZHUSHAN COUNTY QINBA BARIUMSALT CO LTD
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Problems solved by technology

[0002] At present, the preparation method of precipitated barium sulfate generally adopts the "glauber's salt-black ash method". Due to the high e

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0012] 1. The roasting process is to separate the barite and anthracite into the roasting pit at a weight ratio of 100:25. The pulverized coal is blown through the pit head and moves in the opposite direction to the material to roast into barium sulfide black ash.

[0013] 2. It is leaching and sending the black ash into the leaching tank, heating water to dissolve and leaching, and make 15-16% barium sulfide solution and bottom slag. In the compounding process, only a precision filter is added to the clarified BaS solution, with a built-in nanometer filter cloth, so that the suspension of the solution is completely removed.

[0014] 3. Nitrification process: After dissolving Glauber's salt (mostly using sodium sulfate) in a stirring tank, change the traditional precipitation method to a filter press method. The filter cloth uses multi-layer vinylon cloth to completely remove the suspended solids in the nitrate water.

[0015] 4. Combine the refined BaS solution and refined Na 2 S...

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Abstract

The invention discloses a preparation method of precipitated barium sulfate; a piece of nano-filter cloth is added in the traditional preparation method for filtering to obtain refined solution; chemical combination, separation, acid adjustment, drying and evaporation are carried out; barium sulfate, the main component of the product, is raised from 98% to 98.6-99%, the grain diameter of the finished product reaches 900-1,000 meshes, the Na2S, the iron content of which drops below 30ppm, can meet the standard of the first-class product of low-iron sodium sulphide, the coal consumption per ton product is reduced from 3t coal per t sodium sulphide to 1.2t coal per t sodium sulphide; furthermore, the preparation method can save scouring water by 34% and electricity by 11%, improve the quality of the product and lower cost and is beneficial for energy saving and environment protection.

Description

technical field [0001] The invention relates to a preparation method of precipitated barium sulfate. technical background [0002] At present, the preparation method of precipitated barium sulfate generally adopts the "glauber's salt-black ash method". Due to high energy consumption, it is not conducive to environmental protection, and the product quality is unstable, so a new preparation method has been applied. Contents of the invention [0003] In order to improve product quality, reduce energy consumption, and be beneficial to environmental protection, a preparation method of precipitated barium sulfate is proposed. [0004] For this reason the technical scheme of the present invention is: the preparation method of precipitated barium sulfate, and the steps are as follows: barite and anthracite are separated and crushed, put into the roasting kiln by weight ratio 100:25, roast into barium sulfide black ash; and black ash is heated Water is dissolved and leached to mak...

Claims

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Application Information

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IPC IPC(8): C01F11/46
Inventor 王成显
Owner ZHUSHAN COUNTY QINBA BARIUMSALT CO LTD
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