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Preparation method of high transparent magnesium silicate and derivative thereof

A technology of magnesium silicate and derivatives, applied in magnesium silicate, aluminum silicate, silicate and other directions, can solve the problems of long reaction period, instability, huge investment amount, etc., to achieve stable product quality and reduce cost input , to avoid the effect of excessive accumulation

Active Publication Date: 2018-08-14
云南格莱尼科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the artificial synthesis of magnesium silicate and its derivatives requires high temperature and high pressure to have good thixotropy and transparency; from the analysis of the technical level of the entire market, domestic and foreign enterprises generally use hydrothermal synthesis to prepare, not only a huge amount of investment, but also The reaction cycle is long, and various unstable factors are prone to appear during the amplification process

Method used

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  • Preparation method of high transparent magnesium silicate and derivative thereof
  • Preparation method of high transparent magnesium silicate and derivative thereof
  • Preparation method of high transparent magnesium silicate and derivative thereof

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preparation example Construction

[0031] Such as figure 1 Shown, the embodiment of the present invention a kind of preparation method of highly transparent magnesium silicate and its derivatives, comprises the following steps,

[0032] Step S1: uniformly mixing the silicon-containing compound solution, the magnesium-containing compound solution, the modified compound solution and the pH regulator to form a reaction precursor;

[0033] Step S2: placing the reaction precursor in a constant temperature stirring tank at 0-95°C, and pre-reacting for 0-36 hours; the pre-reaction process here is the process of realizing colloidal aging;

[0034] Step S3: Put the reaction precursor into the settling column, after the solid content in the reaction precursor is 5-10%, adjust the liquid pressure valve to 0.5-18Mpa, and pump it into the The heat exchanger flows through a constant temperature heating zone at 150-350° C., flows out after passing through the heat exchanger again, and washes and dries the reactants flowing o...

specific Embodiment 1

[0052] Step S1: under stirring, add 50L 0.8mol / L sodium silicate solution to 50L 0.54mol / L magnesium sulfate solution to form a colloidal mixture; add a pH regulator solution to the mixture, and control the reaction pH value to 10; get A reaction precursor with a solid content of 2%;

[0053] Step S2: Put the reaction precursor in a constant temperature stirring tank at 25°C, and pre-react for 15 hours;

[0054] Step S3: Put the reaction precursor into the settling column. After the solid content in the reaction precursor is 9%, adjust the liquid pressure valve to 2.5MPa, and pump it into the heat exchanger with a pressure pump, and flow through 200 After the constant temperature heating zone at ℃, it passes through the heat exchanger again, and flows out after reaching the liquid pressure valve, and then after washing and drying, the magnesium silicate product is obtained, such as figure 2 shown.

[0055] Grind the product into powder, add it into deionized water under sti...

specific Embodiment 2

[0056] Step S1: under stirring, add 25L 0.05mol / L lithium carbonate solution and 25L 0.02mol / L HF solution to 25L 0.056mol / L magnesium sulfate solution to form mixture I; add 50L 0.04mol / L silica sol solution to In the mixture I, a colloidal mixture II is formed, a pH regulator solution is added to the mixture II, and the reaction pH is controlled to be 8; a reaction precursor with a solid content of 0.1% is obtained;

[0057] Step S2: Put the reaction precursor in a constant temperature stirring tank at 60°C, and pre-react for 32 hours;

[0058] Step S3: Put the reaction precursor into the settling column. After the solid content in the reaction precursor is 8%, adjust the liquid pressure valve to 5MPa, use a pressure pump to pump it into the heat exchanger, and flow through the 250°C After the constant temperature heating zone, it passes through the heat exchanger again, reaches the liquid pressurization valve and flows out, and then washes and dries to obtain the magnesium ...

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Abstract

The invention relates to a preparation method of high transparent magnesium silicate and a derivative thereof, comprising the following steps: step S1: evenly mixing a silicone-containing compound solution, a magnesium-containing compound solution, a modified compound solution and a pH regulator, thus forming a reaction precursor; step S2: putting the reaction precursor into a constant temperaturekettle at 0-95 DEG C, and performing pre-reaction for 0-36h; step S3: putting the reaction precursor into a settling column, after the solid content of the reaction precursor is 5-10 percent, drivingthe reaction precursor into a heat exchanger by a pump, enabling the reaction precursor to flow into a constant temperature heating area at 150-350 DEG C and then flow out through the heat exchanger,and washing and drying a reactant which flows out to prepare a product. By regulating temperature and pressure, hydrothermal reaction can be performed instantaneously; meanwhile high hydrothermal cost is reduced, the product is stable in property, and industrialized production is easy.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a preparation method of highly transparent magnesium silicate and derivatives thereof. Background technique [0002] Magnesium silicate and its derivatives have good dispersibility, suspension, thickening and thixotropy, and are widely used in important chemical fields such as coatings, toothpaste, cosmetics, inks, etc., and have broad development and application prospects. [0003] Natural magnesium silicate and its derivative ores, although the mining cost is low, contain a lot of impurities inside, which cannot meet the needs of high-end products. Therefore, in actual use, people usually use artificially synthesized products to replace natural ores. However, the artificial synthesis of magnesium silicate and its derivatives requires high temperature and high pressure to have good thixotropy and transparency; from the analysis of the technical level of th...

Claims

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Application Information

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IPC IPC(8): C01B33/22C01B33/10C01B33/26
CPCC01B33/103C01B33/22C01B33/26
Inventor 林亚庆赖春林李定生赖聪哲赖辉进郑素花
Owner 云南格莱尼科技有限公司
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