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Boron extracting device and method

A purification method and technology of elemental boron, which is applied in the direction of boron, boron/boride, etc., can solve the problems of high environmental protection cost, low boron purity, low yield, etc., and achieve the effect of low cost, high product purity and fast purification speed

Inactive Publication Date: 2017-01-04
SHENZHEN SAPP DIAMOND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Among the above methods, the boron purity obtained by the first and third methods is slightly lower, and the boron purity obtained by the second method is the highest, but this method has low yield and high environmental protection cost

Method used

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  • Boron extracting device and method

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Experimental program
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Effect test

Embodiment 1

[0038] Put 10 kg of brown amorphous boron with a purity of 92% in figure 1 In the reaction vessel 20 in the container, close the air inlet 54, open the air outlet 52, start the vacuum pump group 60, and vacuumize the airtight cabin 50 to 10 -1 Pa: start the heating control system 70, use the heating coil 40 to heat the brown amorphous boron with a purity of 92% in the reaction vessel 20 to 1700° C. and keep it warm for 60 minutes. Close the gas outlet 54, close the vacuum pump group 60, open the high-purity gas cylinder 10, open the air inlet 52, and fill the high-purity argon (purity is 99.999%) to the airtight chamber 50 to normal pressure. The boron powder is taken out after the temperature of the reaction vessel 20 is lowered to within 100°C. The purity of the analyzed boron powder is greater than 99.9%.

Embodiment 2

[0040] Put 40 kg of brown amorphous boron with a purity of 98% in figure 1 In the reaction vessel 20 in the container, close the air inlet 52, open the air outlet 54, start the vacuum pump group 60, and vacuumize the airtight cabin 50 to 10 -1 Pa; start the heating control system 70, use the heating coil 40 to heat the brown amorphous boron with a purity of 98% in the reaction vessel to 1600° C. and keep it warm for 120 minutes. Close the gas outlet 54, close the vacuum pump group 60, open the high-purity gas cylinder 10, open the air inlet 52, and fill the high-purity argon (99.999%) to the airtight chamber 50 to normal pressure. The boron powder is taken out after the reaction container 20 is cooled to within 100 degrees, and the purity of the obtained boron powder is greater than 99.9%.

Embodiment 3

[0042] 40 kg of brown amorphous boron with a purity of 92% was placed in figure 1 In the reaction vessel 20 in the container, close the air inlet 52, open the air outlet 54, start the vacuum pump group 60, and vacuumize the airtight cabin 50 to 10 -1Pa; start the heating control system 70, use the heating coil 40 to heat the brown amorphous boron with a purity of 92% in the reaction vessel to 1650° C. and keep it warm for 100 minutes. Close the gas outlet 54, close the vacuum pump group 60, open the high-purity gas cylinder 10, open the air inlet 52, and fill the high-purity argon (99.999%) to the airtight chamber 50 to normal pressure. The boron powder is taken out after the reaction container 20 is cooled to within 100 degrees, and the purity of the obtained boron powder is greater than 99.9%.

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Abstract

The invention belongs to the field of chemical engineering, and discloses a boron extracting device which comprises a reaction container, a heat insulation layer, a heating coil, a sealed bin and a heating control system. The heat insulation layer wraps the reaction container. The heating coil wraps the heat insulation layer. An inner cavity of the sealed bin contains the reaction container, the heat insulation layer and the heating coil. The heating control system is electrically connected with the heating coil. The invention further discloses a boron extracting method. The method includes the steps of heating brown amorphous boron with purity of 92-98% in a vacuum environment to 1600-1700 DEG C, keeping the temperature for 60-120 minutes, injecting inert protection gas till the vacuum environment restores the normal pressure, and taking out obtained boron powder when the temperature is lowered to 100 DEG C or below. By introducing the vacuum technology and the super-high-temperature technology into the boron purification process, the method has the advantages of being low in purification cost and high in product purity.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of chemical industry, and in particular relates to a device and method for purifying elemental boron. [0003] 【Background technique】 [0004] Boron is a widely used chemical raw material, mainly used in the production of various compounds of borax, boric acid and boron as well as the element boron. important raw material. Elemental boron is a good reducing agent, oxidizing agent, and brominating agent, and can be used as a blending material for organic synthesis, an insulator for high-voltage high-frequency electricity and plasma arcs, and a transmission window for radars. Existing boron powder purification method is summarized as follows: [0005] 1. First, decompose boron-magnesium ore with concentrated lye to obtain sodium metaborate (NaBO 2 ), when NaBO 2 After crystallization in a strong alkaline solution, it is dissolved in water to become a more concentrated NaBO 2 solution, followed by CO 2 Adju...

Claims

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Application Information

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IPC IPC(8): C01B35/02
CPCC01B35/023C01P2006/80
Inventor 张倩楠
Owner SHENZHEN SAPP DIAMOND TECH CO LTD
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