【摘要】 浮选法只适用于个别种类的磷矿除杂,不能满足中低品位磷矿脱镁的要求。分析磷矿中镁杂质对磷酸及其下游磷化工产品生产的影响;阐述化学法脱除磷矿中镁杂质的原理、工艺方法及脱镁效果。特别对有机酸、无机酸、酸性气体等化学浸提剂在化学浸提法脱镁研究中的应用和脱镁效果进行了总结,认为化学法脱镁,由于其选择性强,脱镁效果相对较好。更多还原

【Abstract】 Because flotation is only applicable to individual types of phosphate rock for impurity removal,it can not meet the actual requirements of medium and low grade phosphate rock.The influence of the existence of magnesium impurities in the phosphate rock on phosphoric acid and its downstream products is analyzed.The principle,process and effect of magnesium impurity removal from phosphate rock with chemical methods are introduced.The application about various chemical drugs to the magnesium impurity removal by chemical leaching field and their effects are summarized including organic acid,inorganic acid and acidic gas.The view is proposed that chemical method has the good effect because of its strong selectivity.更多还原