Method for preparing three crystal configuration type calcium carbonate granules

A calcium carbonate and particle technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of complex preparation methods and difficult coexistence, and achieve the effects of high repeatability, strong operability, and strong potential economic benefits

Inactive Publication Date: 2018-09-04
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems that the preparation methods of calcium carbonate with different crystal configurations are independent of each

Method used

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  • Method for preparing three crystal configuration type calcium carbonate granules
  • Method for preparing three crystal configuration type calcium carbonate granules
  • Method for preparing three crystal configuration type calcium carbonate granules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Carbonate ion (carbonate ion source is Na 2 CO 3 ) and calcium ions (the source of calcium ions is anhydrous CaCl 2 ) in a 1:1 equal concentration to prepare a salt solution system and place it in a 500mL beaker. After the saline solution system was ultrasonically oscillated for 10 min, the beaker was placed on a magnetic stirrer and magnetically stirred at a speed of 1000 rad / min. At 25°C, when the concentration of carbonate ions and calcium ions is 0.04mol / L and the reaction time is 1h, the salt solution system will generate vaterite-type calcium carbonate; the concentration of carbonate ions and calcium ions is 0.1mol / L, and the reaction temperature When the temperature is 75°C and the reaction time is 1.2h, the salt solution system will generate aragonitic calcium carbonate; when the reaction temperature is 25°C, the concentration of carbonate ions and calcium ions is 0.1mol / L, and the reaction time is 1h, the Salt solution systems generate calcite-type calcium c...

Embodiment 2

[0042] Carbonate ion (carbonate ion source is Na 2 CO 3 ) and calcium ions (the source of calcium ions is anhydrous CaCl 2 ) in a 1:1 equal concentration to prepare a salt solution system and place it in a 500mL beaker. After the saline solution system was ultrasonically oscillated for 10 min, the beaker was placed on a magnetic stirrer and magnetically stirred at a speed of 1000 rad / min. At 25°C, when the concentration of carbonate ions and calcium ions is 0.005mol / L and the reaction time is 1h, the salt solution system will generate vaterite-type calcium carbonate; the concentration of carbonate ions and calcium ions is 0.1mol / L, and the reaction temperature When the temperature is 95°C and the reaction time is 1h, the salt solution system will generate aragonitic calcium carbonate; when the reaction temperature is 25°C, the concentration of carbonate ions and calcium ions is 0.6mol / L, and the reaction time is 1h, the salt The solution system will generate calcite type ca...

Embodiment 3

[0044] Carbonate ion (carbonate ion source is Na 2 CO 3 ) and calcium ions (the source of calcium ions is anhydrous CaCl 2) in a 1:1 equal concentration to prepare a salt solution system and place it in a 500mL beaker. After the saline solution system was ultrasonically oscillated for 10 min, the beaker was placed on a magnetic stirrer and magnetically stirred at a speed of 1000 rad / min. At room temperature, when the concentration of carbonate ions and calcium ions is 0.01mol / L and the reaction time is 1h, the salt solution system will generate vaterite-type calcium carbonate; the concentration of carbonate ions and calcium ions is 0.1mol / L, and the reaction temperature is At 80°C and the reaction time is 1h, the salt solution system will generate aragonitic calcium carbonate; when the reaction temperature is 25°C, the concentration of carbonate ions and calcium ions is 0.2mol / L, the reaction time is 3h, the The system produces calcite-type calcium carbonate. The solution ...

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Abstract

The invention provides a method for preparing three crystal configuration type calcium carbonate granules, belongs to the technical field of preparation of calcium carbonate granules, and aims at solving the problems that the preparation methods of calcium carbonate with different crystal configurations are independent from each other and are hard to combine, and the preparation method is complex.The method is characterized in that carbanion and calcium ions are mixed based on the concentration of 1: 1; a salt solution system is in a 500mL flask, and the flask is arranged on a magnetic stirrer for magnetically stirring at the speed of 1000rad/min; the salt solution system is arranged in front of the magnetic stirrer and is ultrasonically oscillated for 10min. Therefore, three crystal configuration type calcium carbonate granules can be obtained under different reaction conditions and reaction systems. The method is different from complex and multi-change gas-liquid reactions systems;the reaction system is high in operability, and high in repeatability.

Description

technical field [0001] The invention belongs to the technical field of preparation of calcium carbonate granules, and in particular relates to a method for preparing calcium carbonate granules with three crystal configurations. Background technique [0002] Calcium carbonate widely exists in nature, is the most common biological mineral, and is also the most widely used chemical product at present. As a new type of functional nano-filler with excellent performance, it is widely used in rubber, plastic, paper, textile, In coatings, inks, daily necessities, pharmaceuticals and other industries, the role of additives and reinforcing agents can not only be used to increase capacity, save masterbatch, reduce costs, but also improve the surface color of products and improve the overall performance of products. [0003] Calcium carbonate with different crystal configurations has different physical and chemical properties and uses. Therefore, it is necessary to prepare calcium carbo...

Claims

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Application Information

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IPC IPC(8): C01F11/18
Inventor 耿红张世杰林秋寒董川
Owner SHANXI UNIV
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