Factors Affects the Separator Indexes

Cylinder use the separate motor, and adopt the connection devices which the gear reducer gear simple direct the  circle box  . Used  the   semi-counter-current or countercurrent tank passed the production test. Half countercurrent tank is easy to improve the concentrate grade, but also on the same level used in tandem to achieve concentrate re-election; countercurrent tank is easy to get a higher metal recovery ,and concentrate grade is slightly lower. Due to the structural characteristics of the tank sorting granularity test showed that for the semi-countercurrent 1O-0 mm from counterflow 3 to 0 mm. Sorting of ore particle size for the 1.0-1.2 mm, the processing capacity is 25-28 U (m.h) , the production practice shows that the concentrate grade of domestic permanent magnet drum magnetic separator belt magnetic separator ,the tailings grade is lower; under similar processing conditions, given Sri Lanka separator separation indexes similar to the belt type magnetic separator. When in processing Nanfen ore, domestic permanent magnet drum magnetic separator better than the given Sri Lanka separator process indicators. Table 3,5 - 14 domestic φ750 mm x18 (X) mm permanent magnet drum magnetic separator machine at home and abroad separator performance comparison.  
Factors and appropriate range of separation indexes :(l) magnetic system angle.Usually adjusted to 100-150. (2) gap (the distance between the bottom of the cylinder surface and the tank tailings sweep constituency) is usually 30 ~ 50 mm. (3) the selected concentration is 25% to 30qo. (4) cylinder line speed is 1.0-1.2 m / s. (5) processing capacity is 25 to 28 U (m.h). Which is equipped With a semi-counter-current or countercurrent tank permanent magnet drum magnetic separator, when the larger diameter is adopted, as the separating zone is extended ,this help to reduce the tailings grade. Also allows a greater speed to increase processing capacity. This machine is the Ma On Shan Institute of Mining Research 1974, the CTB-φ1050 mm x2100 mm, in early 1979 ,the Nanshan iron ore Washan in yards steel concentrator carried out the permanent Magnet Drum Separator industrial test,Testing and production proves that the CrB-φ1050mm × 2100mm permanent magnet drum magnetic separator operates reliable, the capacity is large, the ore adaptability of sorting Washan dynamic nature is strong . In industrial trials, take 19 batches of samples combined average as example, and now plant φ750 mm x1800 mm permanent magnet drum magnetic separator machine processing capacity per unit length is increased by 1; Taiwan handling capacity up to 120t; when the ore grade is 39. 6%, 22.48% of the circumstances of the magnetic rate from concentrate grade is similar to the normal situations, the recovery rate is 2.17 percent. In June 1979 , this machine passed the technical appraisal organized by the Ministry of Metallurgical Industry .
 

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