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Method and device for preparing strontium carbonate crystals through self-diffusion at room temperature

A strontium carbonate, self-diffusion technology, applied in the direction of strontium carbonate, calcium carbonate/strontium/barium, etc., can solve the problems of uncontrollable reaction, complicated operation, high energy consumption, etc., and achieve low production cost, high preparation efficiency, and low energy consumption Effect

Inactive Publication Date: 2019-01-04
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a method with high preparation efficiency, simple and convenient operation, high process stability, low energy consumption and high production efficiency in view of the shortcomings of existing strontium carbonate crystal preparation methods, such as complex operation, difficult reaction control, high energy consumption, and high cost. Preparation method of low-cost strontium carbonate crystals

Method used

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  • Method and device for preparing strontium carbonate crystals through self-diffusion at room temperature
  • Method and device for preparing strontium carbonate crystals through self-diffusion at room temperature
  • Method and device for preparing strontium carbonate crystals through self-diffusion at room temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the reaction device, 0.60 kg of strontium dichloride hexahydrate was added to the No. 1 material tank (1) of the No. 1 reactor (5), and 0.64 kg of ammonium bicarbonate was added to the No. 2 reactor of the No. 3 reactor (13). In the No. material tank (3), open the No. 1 valve (6), No. 2 valve (8), No. 3 valve (10) and No. 4 valve (12) in the reaction device, and feed from No. 2 reactor (9) 0.020% glycine solution to the water level mark (4), at room temperature, let stand for reaction for 24 hours. Add 0.60 kg of strontium dichloride hexahydrate into No. 1 material tank (1) of No. 1 reactor (5), and 0.64 kg of ammonium bicarbonate into No. 2 material tank (3) of No. 3 reactor (13) , at room temperature for 24 h. Add 0.60 kg of strontium dichloride hexahydrate into No. 1 material tank (1) of No. 1 reactor (5), and 0.64 kg of ammonium bicarbonate into No. 2 material tank (3) of No. 3 reactor (13) , at room temperature, after standing for 48 hours to react, close the ...

Embodiment 2

[0019] In the reaction device, 0.60 kg of strontium dichloride hexahydrate was added to No. 1 material tank (1) of No. 1 reactor (5), and 0.62 kg of ammonium bicarbonate was added to No. 2 of No. 3 reactor (13). In the material tank (3), open the No. 1 valve (6), No. 2 valve (8), No. 3 valve (10) and No. 4 valve (12) in the reaction device, and add 0.020 % glycine solution to the water level mark (4), at room temperature, let stand for reaction for 24 h. Add 0.60 kg of strontium dichloride hexahydrate into No. 1 material tank (1) of No. 1 reactor (5), and 0.62 kg of ammonium bicarbonate into No. 2 material tank (3) of No. 3 reactor (13) , at room temperature for 24 h. Add 0.60 kg of strontium dichloride hexahydrate into No. 1 material tank (1) of No. 1 reactor (5), and 0.62 kg of ammonium bicarbonate into No. 2 material tank (3) of No. 3 reactor (13) , at room temperature, after standing for 48 hours to react, close the four valves, disassemble the No. 1 disassembly station ...

Embodiment 3

[0022] In the reaction device, 0.60 kg of strontium dichloride hexahydrate was added to No. 1 material tank (1) of No. 1 reactor (5), and 0.66 kg of ammonium bicarbonate was added to No. 2 of No. 3 reactor (13). In the material tank (3), open the No. 1 valve (6), No. 2 valve (8), No. 3 valve (10) and No. 4 valve (12) in the reaction device, and add 0.020 % glycine solution to the water level mark (4), at room temperature, let stand for reaction for 24 h. Add 0.60 kg of strontium dichloride hexahydrate into No. 1 material tank (1) of No. 1 reactor (5), and 0.66 kg of ammonium bicarbonate into No. 2 material tank (3) of No. 3 reactor (13) , at room temperature for 24 h. Add 0.60 kg of strontium dichloride hexahydrate into No. 1 material tank (1) of No. 1 reactor (5), and 0.66 kg of ammonium bicarbonate into No. 2 material tank (3) of No. 3 reactor (13) , at room temperature, after standing for 48 hours to react, close the four valves, disassemble the No. 1 disassembly station ...

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Abstract

The invention relates to a method and a device for preparing strontium carbonate crystals through self-diffusion at room temperature. According to the method, with strontium dichloride hexahydrate andammonium hydrogen carbonate as reactants and glycine as a biomimetic control agent, granular strontium carbonate crystals are prepared; the method comprises the following specific steps: in a reaction device, adding a first batch of the strontium dichloride hexahydrate and the ammonium hydrogen carbonate, then adding 0.020% of a glycine solution, reacting for 24h by standing at room temperature,supplementing a second batch of the reactants and a third batch of the reactants, respectively continuing reacting for 24h by standing, filtering a reaction product, washing for three times by using distilled water, and drying for 1h at 105 DEG C to obtain the granular strontium carbonate crystals with the grain diameter of 110-440nm, wherein the product purity is higher than or equal to 99% and the yield is 96-98%. The reaction device consists of a reactor 1 (5), a reactor 2 (9) and a reactor 3 (13). The method and the device have the advantages of high preparation efficiency, simple and convenient operation, high technological stability, low energy consumption, low production cost and the like.

Description

technical field [0001] The invention relates to a method and device for preparing strontium carbonate crystals by self-diffusion at room temperature, in particular to a method for preparing granular strontium carbonate crystals by using strontium dichloride hexahydrate and ammonium bicarbonate as reactants and glycine as a bionic control agent. The specific technical field of the invention is the preparation of strontium carbonate crystals. Background technique [0002] Strontium carbonate is an important industrial raw material, which has a strong shielding function against X-rays, can significantly improve the refractive index of glass and the flow energy of molten glass, and is widely used in the production of electronic components such as picture tubes and displays. In modern society, the demand for high-purity strontium carbonate continues to increase. [0003] At present, there are many preparation methods for strontium carbonate crystals, the main preparation methods...

Claims

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Application Information

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IPC IPC(8): C01F11/18
CPCC01F11/187C01P2002/72C01P2004/03C01P2006/80
Inventor 刘涛钟学明李艳容
Owner NANCHANG HANGKONG UNIVERSITY
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