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磷石膏净化预处理技术
Authors
包炜军
李兵
+3 more
谭伟
郑义文
郑开元
Publication date
1 January 2018
Publisher
Abstract
采用硫酸酸解与有机溶剂萃取相结合的技术手段对磷石膏进行净化处理,脱除包裹及黏附的石英及无机碳等不溶性杂质;考察酸解温度、硫酸浓度、液固质量比、反应时间等因素对磷石膏净化效果的影响。磷石膏经深度净化后获得纯度大于99%、白度大于90%的无水硫酸钙中间产品,与高浓度CO_2气体在加压条件下发生碳酸化反应所得碳酸钙产品纯度大于99%,蓝光白度大于92%,平均粒径6.2μm,可作为附加值更高的高白轻质碳酸钙产品利用
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Last time updated on 08/07/2019