Preparation method of morphology controllable calcium carbonate based on temperature control

A temperature control, calcium carbonate technology, applied in the direction of calcium carbonate/strontium/barium, chemical instruments and methods, calcium/strontium/barium compounds, etc., can solve the problem of increasing production costs, increasing the complexity of the process, and increasing the risk of calcium carbonate production and other problems, to achieve the effect of less restrictions, lower production costs, and uniform size
CN104692437AActive Publication Date: 2015-06-10INST OF PROCESS ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2015-06-10

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Abstract

The invention relates to a preparation method of morphology controllable calcium carbonate based on temperature control. The preparation method of the morphology controllable calcium carbonate based on the temperature control comprises the following steps: introducing a solution containing carbonate or gas such as CO2 which can generate carbonate or a gas mixture containing CO2 into a solution containing calcium ions at the temperature of 10-100 DEG C, initiating precipitation reaction, obtaining a precipitate mixture several minutes later, and drying at room temperature, so that micron-sized calcium carbonate crystals with specific morphology are obtained. The calcium carbonate obtained by adopting the preparation method is good in correspondence between morphology and reaction temperature, and the correspondence is independent of type of a reactant; the obtained calcium carbonate crystals are well dispersed and uniform in sized; meanwhile, control of crystal form is efficient and stable; besides, by adopting a temperature control process, one-step synthesis, simplicity and practicability are realized, and industrial cost is low, so that the preparation method of the morphology controllable calcium carbonate based on the temperature control can be widely applied to batch preparation of calcium carbonate in different morphologies.
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Description

technical field

[0001] The invention relates to a controllable preparation of calcium carbonate with different shapes, in particular to a method for the controllable preparation of calcium carbonate shape based on temperature control. Background technique

[0002] Calcium carbonate is currently the most widely used chemical product. As an additive with excellent performance, it is used in the fields of rubber, paper, textile, paint, plastic, toothpaste, food and medicine to improve the overall performance of the product (Hu Qingfu, Hu Xiaobo, Song Liying. Analysis on the development of calcium carbonate industry [J]. Inorganic Salt Industry, 1999, 31(5): 18-21.). Calcium carbonate includes three crystal forms of calcite, aragonite and vaterite, and the forms include cubic, spindle, spherical, needle, flake, chain and amorphous, etc. Calcium carbonate products with different crystal forms and forms have different functions and functions. The application fields are different....

Claims

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