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Method for Separating Boron

A boron complex and solution technology, applied in the field of boron separation, can solve the problems of complex process, high production cost, large consumption of resin, etc., and achieve the effects of simple process steps, wide application range and reduced production cost.

Active Publication Date: 2019-11-22
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of boron adsorption materials by this method is complicated and the production cost is high.
[0007] Combining the above-mentioned patented technologies, it can be seen that among the existing boron separation methods, the adsorption method has a better boron removal effect, but the resin capacity is limited, and it is mainly suitable for solution systems with a boron content of less than 30mg / L. When the amount of resin consumed is large, the production cost is also high
If a new type of boron adsorption material is developed, there are problems of complex process and high cost
The extraction method is mainly suitable for the solution system with a boron content of 2-18g / L. The main problem is that the extraction process is complicated and the production cost is high.

Method used

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  • Method for Separating Boron
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Effect test

Embodiment 1

[0036] The present embodiment provides a method for separating boron, comprising the following steps:

[0037] S1. Prepare 520mL solution containing 0.03mol / L boron, add 71.04g mannitol, adjust the pH of the solution to 2.164, and form a boron-containing complex solution.

[0038] S2. Weigh 2g of sodium dodecylbenzenesulfonate and dissolve it in 10mL of secondary water to form a flotation agent solution. Pour the above-mentioned boron-containing complex solution and flotation agent solution into the flotation cell, close the air valve, stir, adjust the stirring speed to 1800r / min, and stir for 10min; The bubbling speed is 1500r / min; the boron-containing complex solution is combined with the flotation agent solution, and floats to the top layer of the reaction system with the bubbles to form a foam layer, and the top foam layer is scraped off to obtain the remaining solution after boron is separated.

[0039] The remaining solution after boron separation is measured by acid-ba...

Embodiment 2

[0041] The present embodiment provides a method for separating boron, comprising the following steps:

[0042] S1. Prepare a 520mL solution containing 0.03mol / L boron, add 28.42g mannitol, adjust the pH value of the solution to 4.067, and form a boron-containing complex solution.

[0043] S2. Take 1 portion of 3g sodium dodecylbenzenesulfonate and dissolve it in 10mL of secondary water to form a flotation agent solution. Pour the above-mentioned boron-containing complex solution and flotation agent solution into the flotation cell, close the air valve, stir, adjust the stirring speed to 1400r / min, and stir for 2min; The bubbling speed is 1500r / min; the boron-containing complex solution is combined with the flotation agent solution, and floats to the top layer of the reaction system with the bubbles to form a foam layer, and the top foam layer is scraped off to obtain the remaining solution after boron is separated.

[0044] The remaining solution after boron separation is mea...

Embodiment 3

[0046] The present embodiment provides a method for separating boron, comprising the following steps:

[0047] S1. Prepare a 520mL solution containing 0.03mol / L boron, add 42.63g mannitol, adjust the pH of the solution to 7.165, and form a boron-containing complex solution.

[0048] S2. Take 1 portion of 4g sodium dodecylbenzenesulfonate and dissolve it in 10mL of secondary water to form a flotation agent solution. Pour the above-mentioned boron-containing complex solution and flotation agent solution into the flotation cell, close the air valve, stir, adjust the stirring speed to 1600r / min, and stir for 5min; Select, the bubbling speed is 1800r / min; obtain the remaining solution after boron is separated.

[0049] The remaining solution after boron separation is measured by acid-base titration, after flotation, the concentration of boron in the remaining solution after boron separation is 0.00478mol / L, and the removal rate of boron can reach 91.43%.

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Abstract

The invention relates to the technical field of chemical substance separation, in particular to a method for separating boron. The method comprises the following steps that firstly, a polyhydroxy compound is added into a boron-containing solution, and a boron-containing complex solution is prepared; secondly, a flotation agent solution is added into the boron-containing complex solution for flotation, and a remaining solution obtained after the boron is separated is obtained. By means of the method, the boron-containing solution can be separated, and the method has the advantages of being simple in process, low in production cost, wide in application range and the like.

Description

technical field [0001] The invention relates to the technical field of separation of chemical and chemical substances, in particular to a method for separating boron. Background technique [0002] Boron is a semi-metal element. Because its physical and chemical properties are between metal and non-metal elements, it endows boron-doped materials with excellent properties such as flame retardancy, wear resistance, heat resistance, high hardness, high strength and light weight. Boron and its compounds are widely used in industry, mainly for the production of boron compounds such as borax and boric acid, and are important raw materials for medicine, materials, chemical industry, nuclear industry, agriculture and other departments. At present, the domestic annual consumption of boric acid is about 32 tons, but the output is only about 9 tons. With the massive consumption of boron ore resources, the reserves of easily decomposed high-grade borate ore are decreasing day by day. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/02B03D1/016B03D101/00
Inventor 李权柏春郭敏吴志坚
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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