Tin Ore Beneficiation Machine

Cassiterite density than the coexisting minerals, tin ore beneficiation process of the traditional gravity separation. Over time, the selected mine Dan Zhongxi crystal size continuously variable fine cassiterite flotation process. In addition, because the tin minerals tend to have a variety of iron oxide minerals such as magnetite, hematite and limonite, mineral flotation and re-election can not be with cassiterite well separated, so in recent years tin ore beneficiation process magnetic separation operations.

Mostly follow the float – heavy mineral processing technology, the process is: ore crushed to 20mm, a period of closed-circuit grinding to 0.074mm (200 mesh) accounted for 60% to 65% flotation of coarse sweep a fine; separation of copper and sulfur grinding to 0.074mm accounted for 95% of crude sweep three fine, the production of copper concentrate, sulfur concentrate; mixed flotation tailings sulfide re-election. Election by a Sec-bed; a re-wash; mud election; crude tin concentrates in addition to the sulfur flotation, production of tin concentrate, rich in ore.

The other a process of beneficiation process as follows: first ore crushed to-20mm, divided into 20 ~ 4 4 ~ 0mm two fractions by sieving, 20 ~ 4mm to enter the pre-selection of heavy medium cyclone. Dense Medium Cyclone thinks highly of the product after a period of rod mill after the jig preselected jig tailings 2mm vibration sieve as the discarded tailings in addition to +2 mm,-2mm enter shaker sorting. Jig and shaking concentrates and ore grade is divided into two systems of rich or poor, respectively, and then grinding and flotation.

Flotation tailings shaker sorting produce qualified tin concentrate; flotation concentrate is then finely ground lead and zinc flotation separation, and output, respectively, lead-antimony concentrate and zinc concentrate. Heavy dressing mud into the the Φ300mm cyclone overflow Φ125mm and Φ75mm hydrocyclone group, removal of fine mud, grit concentrated, cassiterite flotation after flotation desulfurization.