混酸法制取高浓度富过磷酸钙的试验研究  

Experimental Study for Manufacture of High - Concentration Enriched Superphosphate by Mixed Acid Process

作　　者：胡宏 

机构地区：[1]瓮福（集团）有限责任公司技术开发中心,贵州福泉550501

出　　处：《贵州工业职业技术学院学报》2011年第1期41-45,共5页GUIZHOU SCIENCE AND TECHNOLOGY PROFESSIONAL COLLEGE

摘　　要：研究采用磷酸、硫酸混合分解磷矿粉制高浓度富过磷酸钙[W（P2O5）-34％]的实验过程，研究磷酸替代率、混酸浓度、混酸温度、混酸用量等工艺条件对磷矿分解率的影响。通过实验，得到制备富过磷酸钙的较优工艺条件：磷酸替代率55％～58％，混酸浓度（H3PO4＋H2SO4）64％-69％，混酸温度90℃～95℃，混酸用量为理论酸用量的93％-98％。The experiment process of high - concentration enriched superphosphate （ available W （P205） - 34% ）is introduced by decomposing phosphoric and sulfuric acid mixture. And the influences of alternated phosphoric acid amount, mixed acid concentration, temperature and con - sumption on acidulated rate of phosphate rock are discussed. The optimum technological parameters are also determined by experiments for mixed acid （ H 3PO4 ＋ H2SO4） 64% - 69% , temperature 900C - 950C, alternated rate of phosphoric acid 55% - 58% , mixed acid consumption 93% -98% theoretical acid consumption.

关 键 词：硫 磷混酸 富过磷酸钙 分解率 

分 类 号：TQ442.12[化学工程—化学肥料工业]