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Iron Mineral Recovery in Iron Tailings - Qidashan Iron Ore Concentrator
Qidashan integrated iron ore beneficiation plant tailings is piped to a tailings dam stockpiling week Ravine, daily discharge tailings about 14,000 t, sample No. 2 by the tailings pumping station received the results of chemical analysis for product size The tailings contain 11.47%-13.75% iron and tailings concentration 14.2%~17.1%. The amount of iron minerals visible along the tailings is within the effective recovery particle size range of the spiral chute.
The Qidashan Concentrator has carried out an industrial test on the re-election of the tailings. The process flow is: the concentrating plant discharges the tailings slurry and passes through two φ800mm tailings conveying pipelines (one production, one standby) and is pressurized by the pumping station. Yang is sent to the tailings dam, and then the tailings sub-pipe with a diameter of 108mm is taken out from the side of the main pipeline of the tailings 30m in front of the pumping station of the second pumping station. After technical treatment, the residual pressure and boost of the slurry are utilized. Force, the slurry is sent to a rectangular slurry distributor 7m high from the ground, the slurry passes through the spiral chute, and finally three products are separated. The concentrate and the middle mine flow to the respective pump pool, and then naturally transported to the stockyard. Sold. The tailings are forcibly fed into the tailings main line with a 4PNJ rubber pump. Considering the necessity of continuous transportation, the line flow pipeline and the three-stage slurry pump have spare equipment. In order to ensure continuous ore discharge, five high-level storage tanks with a volume of 17m 3 were built, and concentrates and medium mines were piled up separately, and an open-air material yard with an area of ​​about 400 m 2 was built.
By 1 year of industrial tests showed that 57% iron achieved 62% of the re-metallurgical tailings and iron ore is selected from iron with 35% to 45% of solvent cement building materials industry, an integrated final tailings The grade is 9.52% to 12.47%.