Preparing process for calcium carbonate crystal whisker

A technology of calcium carbonate whisker and preparation process, which is applied in the directions of single crystal growth, crystal growth, single crystal growth, etc., can solve the problems of difficult to mix uniformly, poor economic benefit and the like, and achieves short preparation period, low cost and high yield Effect

Inactive Publication Date: 2004-12-08
青海海兴科技开发有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The first two methods have poor economic benefits, while the latter two methods are economical and easy to operate, bu

Method used

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  • Preparing process for calcium carbonate crystal whisker
  • Preparing process for calcium carbonate crystal whisker

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Embodiment Construction

[0021] A preparation method for calcium carbonate whiskers, comprising the following process steps: (1) putting 2.1 kilograms of quicklime into 10 kilograms of water, stirring to make it fully mixed, making quicklime slurry, and standing for several minutes; (2) taking Dissolve 4.3 kg of magnesium chloride raw material in 90 kg of water to make a magnesium chloride solution with a concentration of 4-5% as a reaction environment and catalyst, and add it to the bubbling stirring tank for stirring, and then add the quicklime slurry made by the above process to the drum (3) Heating the reaction solution to 70-90° C., passing the dioxygen gas into the reaction solution for 2-6 hours from the gas distributor below the stirring tank to fully carbonize the reaction solution; (4 ) The reaction product is filtered, washed and dried by a centrifuge to obtain a calcium carbonate whisker product; the filtered mother liquor is sent to the reactor for repeated use, and its concentration is me...

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Abstract

Whiskers of calcium carbonate are prepared by: slaking, reactive liquid preparing, carbonating, finishing and recovering. The process is of easy control and operation with short preparing period, low cost and quality products.

Description

technical field [0001] The invention relates to a preparation process of calcium carbonate whiskers. Background technique [0002] Whiskers are single crystal fibrous materials with a diameter of several microns and a length of tens of microns. At present, there are many kinds of whiskers, and calcium carbonate whiskers are one of them. As a new type of whisker material, calcium carbonate whisker has the characteristics of high strength, high modulus, good heat resistance and heat insulation performance, and is widely used in the manufacture of plastics, rubber, coatings, paper, electrical components, and high-gloss structures Manufacturing of components etc. [0003] There are many preparation methods of calcium carbonate whiskers, which can be divided into the following four types in terms of technology: soluble calcium salt and soluble carbonate preparation method; urea hydrolysis preparation method; calcium bicarbonate preparation method; calcium hydroxide-carbon dioxi...

Claims

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Application Information

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IPC IPC(8): C30B29/62
Inventor 李武张志宏聂峰李中
Owner 青海海兴科技开发有限公司
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