4) After the mine waste is mixed in the ratio about 10% of the normal mining, additional operations at a preselected magnetic pulley powder ore bin, throwing yield 8% to 12% addition, the dry tailings containing about 10% iron grade, into The grade of ground ore is increased by 1~2%, which reduces the consumption index of energy and auxiliary materials.
5) Adding automatic control facilities in a section of grinding, so that the grinding efficiency is increased by 0.1t/(m3.h) (in the order of -0.074mm), and the pass rate of the primary classifier overflows (by -0.246mm level is greater than 70) % assessment), increased from 55.96% to 81.22%.
6) section ¢ 1050 × 2400 uses magnetic drum separator instead of the dewatering tank and a magnetic force 3000 ¢ ¢ 750 × 1800 drum magnetic separator, reducing the number of equipment units and water consumption, to improve the metal recovery rate of about 1%.
7) After the second magnetic separation operation, two fine screening operations are added. The size of the sieved product is less than 0.074 mm, accounting for about 80%, the monomer dissociation degree of useful minerals is up to 95%, and the iron grade is up to 65%.
8) After 1985, magnetic agglomeration re-equipment equipment was used in the sorting process. Each series was equipped with a ¢2500 magnetic polymer machine. Under the premise of ensuring concentrate grade and metal recovery rate, the concentrate size was Less than 0.074 mm accounted for 75~80%, reduced to 65~75%, that is, the grinding fineness became coarser, which increased the ball mill processing capacity by 15~17%, which correspondingly improved the concentrate production of the whole production system. The technical and economic effect was obviously. In addition to the magnetic clustering machine, the magnetic agglomeration re-election of the plant also adds a magnetic sweeping option to the overflow of the magnetic polymer machine; the magnetic magnetic separator 1050×2400 magnetic separator is changed to the ¢1050×3000 magnetic separator;
The fine mesh sieve hole was changed from 0.2 mm to 0.5 mm and 0.3 mm. The principle of magnetic agglomeration re-selection is shown in the figure below.
Beneficiation plant process indicators, the unit consumption indicators, major equipment are as follows:
mobile steel sump tray, mobile zinc plated grate,sump tray with wheel
Wuxi Huanawell Metal Manufacturing Co., Ltd. , https://www.hnwmetal.com