The pyrite cinder (dry mine) is sieved through a 100 mesh sieve, and the sieved product is ground in a rod mill for 5 min, the grinding concentration is C=70%, stirred for 5-8 minutes, and then subjected to two-stage magnetic separation. The magnetic field strength is 2500 ohms and 3000 ohms respectively. A section of magnetic separation concentrate and two-stage magnetic separation concentrate are combined into the final concentrate. The second-stage magnetic separation tailings are re-selected by spiral chute to obtain the middle mine and tail. mine. The process flow is shown in Figure 1: Figure 1 Two-stage magnetic separation - spiral chute process flow chart See the table below for the results. Table 2 magnetic separation - spiral chute test product name Yield (%) grade(%) Recovery rate(%) Fe S Fe S Concentrate I 25.16 63.68 0.236 31.53 3.41 Concentrate II 38.30 61.77 0.196 46.55 4.31 Tailings 36.54 30.48 4.91 21.92 92.28 total 100 50.82 1.74 100 100 The results in the table show, the sulfur in the iron ore slag pretreated under the same conditions, with a two-stage magnetic separation - can be ideal spiral chute sorting index joint process. The obtained concentrate grades are relatively high, 63.68% and 61.77%, respectively. The cumulative yield of concentrate I+ concentrate II is 63.46%, and the cumulative recovery rate is 78.08%. The content of S can also be reduced to less than 0.3%. Vibrating Screen Machine,Tumbler Screener,Tumbler Screening,Tumbler Screening Machine Xinxiang Zhenying Mechanical Equipment Co., Ltd , https://www.beltconveyor.nl
Test of combined process of two-stage magnetic separation-spiral chute of pyrite cinder