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Production of Calcium Carbonate from Alkali Recovery White Mud and Its Application Practice
Received:January 01, 2021  
DOI:10.11980/j.issn.0254-508X.2021.04.015
Key Words:caustic white mud  silicon oxide  calcium carbonate  filler  recycling  white clay to remove silicon
Author NameAffiliationPostcode
CAO Yanjun Shandong Sun Paper Industry Joint Stock Co. Ltd. Jining Shandong Province 272100 272100
ZHAI Bingyan Shandong Sun Paper Industry Joint Stock Co. Ltd. Jining Shandong Province 272100 272100
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Abstract:The high content of silicon oxide in alkali recovery white mud made it difficult to recycle. After research and exploration, a paper company in conjunction with the U.S. Special Mining Co., Ltd., optimized and controlled the process of intensified washing, carbonization and grinding to produce the calcium carbonate with the particle size, residual alkali and silicon content which met the requirements of paper filler. The produced filler calcium carbonate had been successfully applied to various kinds of paper produced in the paper company, which developed a feasible method for the comprehensive utilization of alkali recovery white mud.
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