Inorganic Chemicals Industry >
Research progress on preparation of calcium sulfate whisker from industrial by⁃product gypsum under atmospheric pressure
Received date: 2024-07-08
Online published: 2024-08-14
With the rapid development of China's industry，industrial by⁃product gypsum（phosphogypsum，flue gas desulfurization gypsum，titanium gypsum，etc.） emissions are growing，a large amount of industrial by⁃product gypsum accumulation will cause serious environmental problems，such as groundwater pollution，soil pollution and so on.Calcium sulfate whisker is often added to other materials as a filler in the industry to enhance performance and other functions，make full use of industrial by⁃product gypsum to prepare high added value calcium sulfate whisker，which can not only protect the environment，but also expand its application range and increase economic benefits.Due to the influence of production technology and equipment，the preparation of calcium sulfate whisker by industrial by⁃product gypsum under normal pressure has not been realized on a large scale.The methods of preparing calcium sulfate whisker from industrial by⁃product gypsum under atmospheric pressure were described and compared，the regulation mechanism of different types of crystal modifier on crystal morphology was described， the influence of impurities in industrial by⁃product gypsum on the crystallization process was introduced.The shortcomings of the current preparation methods of calcium sulfate whisker was summarized，and the future preparation process of calcium sulfate whisker was prospected.
RAO Jiahuan , WEI Jiazhan , DENG Lian , JING Daiyan . Research progress on preparation of calcium sulfate whisker from industrial by⁃product gypsum under atmospheric pressure[J]. Inorganic Chemicals Industry, 2025 , 57(5) : 46 -54 . DOI: 10.19964/j.issn.1006-4990.2024-0392
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