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A kind of inorganic carbonate powder surface shaping method

A carbonate and powder technology, applied in the direction of inorganic chemistry, chemical instruments and methods, calcium carbonate/strontium/barium, etc., can solve the problems of low quality of finished products, high cost, complex surface shaping methods of inorganic salt powder, etc. Achieve the effect of good fluidity, not easy to reunite, simple and easy technical route

Active Publication Date: 2021-05-04
EARTH PANDA ADVANCE MAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a surface shaping method for inorganic carbonate powder, which mainly solves the problems of complex surface shaping method, high cost and low quality of finished products for inorganic salt powder

Method used

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  • A kind of inorganic carbonate powder surface shaping method

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Effect test

Embodiment 1

[0021] To shape the surface of calcium carbonate powder,

[0022] (1) KH550 (mass fraction 20%, wherein water is 8%, ethanol is 72%) and AgNO of 0.2g / ml 3 Mix the solutions, add NaOH solution dropwise to adjust the pH to 10, soak the dried calcium carbonate powder in the above solution at a temperature of 60°C for 60 minutes, take it out and wash it with water.

[0023] (2) Prepare liquid B, the components of liquid B are: EDTA (14g / L), NaKC 4 h 4 o 6 4H 2 O(14g / L), K 4 Fe(CN) 6 ·3H 2 O(0.1g / L), C 10 h 8 N 2 (0.02g / L), HO(CH 2 CH 2 O) nH (1g / L), HCHO (15mL / L) NaOH (14.5g / L). Immerse the calcium carbonate powder regulated in step (1) in liquid B at 30°C for secondary regulation for 60 minutes, then wash it with deionized water, and dry it in an oven at 80°C for 30 minutes to obtain surface-shaped calcium carbonate powder Body, such as figure 1 shown.

Embodiment 2

[0025] To shape the surface of magnesium carbonate powder,

[0026] (1) KH560 (mass fraction 20%, wherein water is 8%, ethanol is 72%) and AgNO of 0.2g / ml 3 The solution was mixed and NH was added dropwise 3 ·H 2 O saturated aqueous solution to adjust the pH to 11, soak the dried magnesium carbonate powder in the above solution at a temperature of 60°C for 50 minutes, take it out and wash it with water.

[0027] (2) Prepare liquid B, the components of liquid B are: EDTA (13g / L), NaKC 4 h 4 o 6 4H 2 O(13g / L), K 4 Fe(CN) 6 ·3H 2 O(0.1g / L), C 10 h 8 N 2 (0.02g / L), HO(CH 2 CH 2 O) n H (1g / L), HCHO (15mL / L) NaOH (14g / L). Immerse the magnesium carbonate powder regulated in step (1) in liquid B at 40°C for secondary regulation for 50 minutes, then wash it with deionized water, and dry it in an oven at 90°C for 20 minutes to obtain surface-shaped magnesium carbonate powder body.

Embodiment 3

[0029] Surface shaping of zinc carbonate powder,

[0030] (1) KH580 (mass fraction 20%, wherein water is 8%, ethanol is 72%) and AgNO of 0.2g / ml 3 Mix the solutions, add NaOH solution dropwise to adjust the pH to 12, soak the dried zinc carbonate powder in the above solution at a temperature of 60°C for 60 minutes, take it out and wash it with water.

[0031] (2) Prepare liquid B, the components of liquid B are: EDTA (12g / L), NaKC 4 h 4 o 6 4H 2 O(12g / L), K 4 Fe(CN) 6 ·3H 2 O(0.1g / L), C 10 h 8 N 2 (0.02g / L), HO(CH 2 CH 2 O) nH (1g / L), HCHO (15mL / L) NaOH (13g / L). Immerse the adjusted zinc carbonate powder in step (1) in liquid B at 50°C for secondary adjustment for 40 minutes, then wash it with deionized water, and dry it in an oven at 100°C for 10 minutes to obtain surface-shaped zinc carbonate Powder.

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Abstract

The invention discloses a method for shaping the surface of inorganic carbonate powder, which comprises the following steps: (1) liquid A and liquid B are prepared first, liquid A is mixed with silver nitrate and hydrolyzed silane, and then the pH is adjusted by alkali to 10-12, liquid B is obtained by mixing some salt solutions; (2) immerse the inorganic carbonate powder in liquid A and stir in a constant temperature water bath; (3) immerse the powder obtained in step (2) in liquid B In the process, after being regulated in a constant temperature water bath, it is washed with water, and finally the surface-shaped carbonate powder is obtained. The preparation method of the present invention can obtain surface-shaped inorganic carbonate powder, the preparation method has simple process, energy saving and environmental protection, non-toxic and harmless, and continuous production can be realized.

Description

technical field [0001] The invention relates to the field of in-situ growth and surface regulation on the surface of a powder, in particular to a method for shaping the surface of an inorganic carbonate powder. Background technique [0002] The surface-shaping inorganic carbonate powder has the advantages of simple process, low cost, good surface performance, high adhesion and good compatibility, and has potential application value in many fields such as coatings, photocatalysis, cosmetics, and ceramics. [0003] As for powder surface control, currently surface chemical coating, precipitation reaction modification method, mechanochemical technology and composite method are mainly used. Among them, the powder surface shaping technology can control the powder surface structure, so that the powder surface grows in situ. shape substance, and the process is easy to control, the equipment is simple and the cost is low, which has attracted widespread attention. For example, patent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/18
CPCC01F11/185
Inventor 黄俊俊曹玉杰黄秀莲刘友好陈静武衣晓飞熊永飞
Owner EARTH PANDA ADVANCE MAGNETIC MATERIAL
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