【摘要】 研究了几种碱金属脱氟剂氯化钠、碳酸钠、氯化钾及钙盐脱氟剂对磷矿盐酸萃取液的脱氟效果,探讨了碱金属脱氟剂脱氟效果较差的原因,比较了几种脱氟剂脱氟效果的优劣。研究结果表明:碱金属脱氟剂的脱氟效果为Na2CO3>KCl>NaCl,但其均不能达到脱氟要求;钙盐脱氟剂中氢氧化钙脱氟效果优于碳酸钙,且脱氟过程中磷损失较少。更多还原

【Abstract】 Study is conducted to the defluorization effect of several alkali metal fluoride removal agents:sodium chloride,sodium carbonate,potassium chloride and calcium salt fluorine remover.The reasons for the poor defluorination effect of alkali metal fluoride removal agent are discussed and the defluorination effect of several defluorinating agents is compared.Research results show that defluorization effect Na2CO3> KCl> NaCl,and three kinds of alkali metal fluorine remover fails to meet the defluorization requirements and the defluorination effect of calcium salt defluorinating agent calcium hydroxide is better than that of calcium with less loss of phosphate in the defluorization process.更多还原