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Experimental Study on Preselection of Composite Iron Ore with New External Magnetic Separation Technology |
Received:May 25, 2020 Revised:June 05, 2020 |
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DOI:doi:10.3969/j.issn.1671-9492.2021.03.021 |
KeyWord:External;magnet magnetic;separator,Pre-selection,Magnetic;field intensity |
Author | Institution |
liyao |
BGRIMM Machinery &Automation Technology Co.,Ltd |
chenglei |
BGRIMM Machinery &Automation Technology Co.,Ltd |
shipeiwei |
BGRIMM Machinery &Automation Technology Co.,Ltd |
shanghongliang |
BGRIMM Machinery &Automation Technology Co.,Ltd |
wangzhiwei |
BGRIMM Machinery &Automation Technology Co.,Ltd |
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Abstract: |
In order to improve the efficient pre-selection of composite iron ore, try to increase the grade of the ore into the mill, simplify the grinding process, reduce the processing capacity of the grinding operation, and reduce the production cost of the equipment. The composite iron ore often contains strong magnetic and weak magnetic minerals, and the pre-selection waste disposal process is often used. Conventional cylindrical magnetic separators often fail to achieve the ideal selection index, and there are problems such as complicated process and equipment operation. Therefore, a new type of magnetic separation technology is used, and a single equipment can be used to realize the cascade separation operation of different types of ores. It solves the complicated configuration and wet pre-grinding pre-selection process, which is one of the external magnetic type magnetic separator cost reduction and efficiency increase. An effective way. This article is studying the separation principle and structural characteristics of the external magnetic separator, analyzing the indicators of the Meishan Iron Mine laboratory, and conducting field industrial conditions tests on the cylinder speed, rinsing water volume and equipment inclination, and obtained the TFe grade of concentrate 53.24% The test index of tailings grade is less than 22%, the best test sorting index of recovery rate is 64.78%. The ideal beneficiation index, under the condition of magnetic field strength test and rinsing water condition test in Longqiao Iron Mine, the Meishan test finally obtained Longqiao Iron Mine and finally obtained the TFe grade of concentrate 44.36%, the recovery rate was 94.19% The best test index. |
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