Inner Mongolia 990,000 tpa Lead-zinc Mineral Processing Plant

XINHAI SOLUTION

• 01

  The stage of crushing and screening: Use two-and-half-stage and one closed-circuit process, the final particle size of the crushed product was 12 mm.
  

• 02

  Grinding and grading stage: First stage used a grid ball mill to grind and a pump +  hydrocyclone to grade; Second stage was to re-grind the coarse concentrate of lead with a overflow tube ball mill for grinding and a pump +  hydrocyclone for grading. 
  

• 03

  The stage of flotation: In order to ensure the recovery rate and the quality of lead and zinc concentrates, a zinc concentration was added on the basis of the recommended process of the mineral processing test, and a lead and zinc scavenging were added respectively. The process of flotation was composed of selecting lead first, then zinc from lead tailings. It used the process flow of one-roughing, three-scavenging and three-concentration to select the lead, firstly lead tailings and then zinc selection; it used the process flow of one-roughing, three-scavenging and four-concentration to select the zinc. All of flotation cells are air-charging flotation cells, the unit of XCF/KYF-16 flotation cell for the scavenging of lead and zinc, and the unit of XCF/KYF-8 flotation cell for the concentration.
  

• 04

  The dehydration stage of lead and zinc concentrates: Use two-stage mechanized dehydration process. First stage, it used the high-efficiency modified thickener to dehydrate lead and zinc concentrates; Second stage, it used the membrane filter press to filter and dehydrate the lead concentrate. The zinc concentrate was filtered and dehydrated by the ceramic-medium filter. After dehydration, the water content of the lead and zinc concentrate was less than 12%.
  

• 05

  The dehydration stage of tailings: At the end of the processing plant, tailings were discarded in a wet manner. The final tailings from the processing plant were transported to the tailings pond with a plunger pump for precipitation. Tailings were deposited in the pond, and the clarified water was pumped back to the production pond of the plant for recycling, thereby realizing zero discharge of wastewater during the the plant's production.