矿业工程
礦業工程
광업공정
Mining Engineering
2015年
5期
15-18
,共4页
赤铁矿%尾矿品位%磁性铁含量%精矿产率%中矿量
赤鐵礦%尾礦品位%磁性鐵含量%精礦產率%中礦量
적철광%미광품위%자성철함량%정광산솔%중광량
hematite%tailings grade%magnetic iron content%concentrate productive rate%middling quantity
某赤铁矿作业区增产改造后存在尾矿品位偏高，对该区流程考查结果表明：原矿中的磁性铁含量偏低、中矿量大的问题是该作业区赤铁矿石选别工艺中尾矿品位高的主要原因，建议在生产操作中增大粗螺精矿、精螺精矿和筛下的产率，使已单体解离的铁矿物及时分选出去，以减少中矿量，同时改善二次磨矿分级作业的效果，降低尾矿品位。
某赤鐵礦作業區增產改造後存在尾礦品位偏高，對該區流程攷查結果錶明：原礦中的磁性鐵含量偏低、中礦量大的問題是該作業區赤鐵礦石選彆工藝中尾礦品位高的主要原因，建議在生產操作中增大粗螺精礦、精螺精礦和篩下的產率，使已單體解離的鐵礦物及時分選齣去，以減少中礦量，同時改善二次磨礦分級作業的效果，降低尾礦品位。
모적철광작업구증산개조후존재미광품위편고，대해구류정고사결과표명：원광중적자성철함량편저、중광량대적문제시해작업구적철광석선별공예중미광품위고적주요원인，건의재생산조작중증대조라정광、정라정광화사하적산솔，사이단체해리적철광물급시분선출거，이감소중광량，동시개선이차마광분급작업적효과，강저미광품위。
After upgrading and reform of a certain hematite operation zone,there is a problem that the tailings grade is relatively high. The results of the inspection on flow sheet in this area show that:the magnetic iron content is relatively low in the original concentrate;the large quantity of middling is the main reason why the tailing grade is high for hematite separation process. Our suggestion is to increase the productive rate of rough clean spiral,clean spiral,and undersize to sort out iron ore that has been monomer separated to reduce middling quantity. Meanwhile it will improve the effect of secondary grinding classification operation to reduce tailing grade.
