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Surface shaping method of inorganic carbonate powder

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

Active Publication Date: 2019-04-26
EARTH PANDA ADVANCE MAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Surface shaping method of inorganic carbonate powder

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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 surface shaping method of inorganic carbonate powder, which comprises the following steps: (1) preparing a solution A and a solution B first, and then regulating a PH value to 10-12 with alkali, (2) immersing inorganic carbonate powder in the solution A and performing stirring in a thermostatic waterbath, and (3) immersing powder obtained in the step (2) into the solutionB, performing regulation in the thermostatic waterbath and water washing, and finally obtaining the surface shaped carbonate powder, wherein the solution A is prepared by mixing silver nitrate and hydrolyzed silicane; and the solution B is prepared by mixing salt solutions. Through the adoption of the preparation method, the surface shaped inorganic carbonate powder can be obtained, and the surface shaping method is simple in technology, energy-saving, environmentally friendly, nontoxic and harmless and can achieve continuous production.

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 Applications(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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