新型两段琼斯湿式强磁选机在巴西费尔特科矿产公司法布里卡矿的工业应用

发布时间：2018-04-30 18:47

本文选题：强磁选机 + 磁铁矿　；参考：《国外金属矿选矿》1994年03期

【摘要】：1977年开始投产的法布里卡矿选矿厂，用9台标准型DP317、气隙宽1．5mm的琼斯湿式强磁选机生产球团原料用的精矿。这些湿式强磁选机平行作业。给料速度为110t／h，原料中铁品位为47％。磁铁矿最大含量仅0．8％。磁场强度为1．2T。自1986年。该矿已使其生产设备适合于选别大量低品位的铁英岩，以最大限度地利用现有的铁矿资源。当磁选机给矿中磁铁矿含量增加到3％时，导致处理量降低。这是因为在高磁场强度时，磁选机分选腔部分堵塞。即使降低给矿速度和磁场强度。这个问题也不能解决。用型号DP90的琼斯磁选机，在中间工厂经过大量实验工作之后，利用现有的9台琼斯磁选机将工业用的湿式强磁选车间改变为两段工艺。第一段4台磁选机的气隙增加到3．5mm，相应的最大磁场强度为0．7T。在第一段“中磁场租磁选作业”之后。便是在原有位置上的5台磁选机的第二段“真正”强磁场湿式强磁选作业，磁选机气隙为1．5mm。最大磁场强度1T。给矿速度第一段可以达到320t／h，第二段达到24ot／h。可用新旧流程来描述法布里卡矿选厂的设计思想，，介绍了中间工厂的实验工作的细节以及新车间磁选工段的实际运行数据。
[Abstract]:The concentrate of pellet raw material was produced from 9 standard DP317s with wide air gap 1.5mm and Jones wet strong magnetic separator, which was put into production in 1977 at Fabrica Mine Concentrator. These wet strong magnetic separators operate parallel. Feed speed is 110 t / h, iron grade in raw material is 47%. The maximum content of magnetite is only 0.8%. The magnetic field intensity is 1.2 T. Since 1986. The ore has made its production equipment suitable for the separation of a large number of low-grade Tie Ying rocks in order to maximize the utilization of existing iron ore resources. When the content of magnetite in the feed of magnetic separator increases to 3, the treatment capacity decreases. This is because at high magnetic field strength, the separation chamber part of the magnetic separator block. Even lower feed speed and magnetic field strength. This problem cannot be solved. After a lot of experimental work in the intermediate factory, the wet strong magnetic separation workshop for industrial use was changed into a two-stage process by using the existing nine Jones magnetic separators. In the first stage, the air gap of 4 magnetic separators is increased to 3.5 mm, and the corresponding maximum magnetic field intensity is 0.7 T. After the first paragraph, "Magnetic Field Rent Magnetic Separation". It is the second stage of the "real" strong magnetic field wet strong magnetic separation in the original position of 5 magnetic separators. The air gap of the magnetic separator is 1.5 mm. The maximum magnetic field intensity is 1 T. The feed speed can reach 320 t / h in the first stage and 24 otP / h in the second stage. The new and old processes can be used to describe the design idea of Fabrica mine separation plant. The details of the experimental work of the intermediate factory and the actual operation data of the magnetic separation section of the new workshop are introduced.
【作者单位】： IndustrialDirector FertecoMineracaoSABR040－Rm593CaixaPostal2436404-000－CongonhasMG Brazil
【分类号】：TD457

【相似文献】