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川恒股份获发明专利
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川恒股份获发明专利
2019年3月2日,贵州川恒化工股份有限公司发布公告称,公司"半水工艺制备磷酸联产石膏粉的方法"获得国家知识产权局颁发的《发明专利证书》,该技术于2016年8月25日申请,在2019年2月1日正式被授权,有效期自申请日起算20年内。 据了解,本技术主要的技术要点是:1. 预反应槽内,加入含有磷酸、硫酸和半水石膏结晶的料浆和磷矿,混合后进行反应;所述料浆与磷矿混合后,溶液中的SO42-与CaO的摩尔比为0.3–0.8:1;所述料浆的液固比为5–20:1;2. 将预反应槽中产...
Phosphorus Industry China Monthly Report 201903(Chinese Version)
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