Magnetic separators find an effective way to increase recovery

The progress of beneficiation technology in Daye Iron Ore is gradually developed with the development of production. In the initial stage of production, two types of ores, primary ore and oxidized ore, are sorted separately. The primary ore is subjected to a magnetic separation process with flotation, copper concentrates are obtained by flotation, and iron ore concentrates are obtained by flotation tailings. Oxide ore uses a single flotation process. The flotation machine foam product is copper concentrate and the product in the tank is iron concentrate. With the deepening of the mining industry, in the late 1970s, the oxidized ore was basically collected, and the oxidized ore beneficiation series was changed to deal with mixed ore. In order to increase the recovery of associated components such as gold, silver, copper, cobalt, and sulfur in Daye Iron Ore, in 1992, the Daye Iron Ore Concentrator conducted an industry to increase the recovery of gold, silver, copper, cobalt and sulfur in mixed flotation. test. Through the improvement of grinding fineness, flotation time, flow structure and other measures, industrial test results show that the recovery rate of gold, silver, copper, cobalt, and sulfur in the raw ore mixed flotation industrial test process is 5.56, respectively. 6. 65, 4.03, 4.19, 3.35 percentage points. The industrial test can make the recoveries of gold and copper reach 74.79% and 85.04%, respectively.

After a large number of cone crusher tests and research work, the 815 type iron wheel type permanent magnet high gradient industrial magnetic separator of U.S. Yili Magnet (Shanghai) Co., Ltd. has been completed for strong magnetic roughing tailings and strong magnetic separation tailings respectively. The semi-industrial tests of the SLon high-gradient magnetic separator and the Shp-type magnetic separator of Zhangzhou Jinhuan Magnetic Separation Equipment Co., Ltd. achieved ideal targets. The test parameters are shown in Table 2 4 2. High-efficiency fine-sieving and strong magnetic separator The tailings are coarsely subdivided to select a high gradient magnetic separation process. High-gradient magnetic separator can effectively recover the lower limit of particle size is 5-10 um, its characteristics of magnetic field gradient, magnetic force is much higher than the strong magnetic machine Shp-3200 type, equipment failure rate is low. The success of this experiment has provided an effective way for the recovery of strong magnetic metals in Jiujiang Steel.