Xinhai Magnetic Separation Process

Ore Property: After the mineral processing test, Xinhai Mine Research Institute concluded that the main metallic mineral were titanomagnetite, ilmenite and a small amount of hematite, limonite and secondary magnetite. The gangue mineral was plagioclase.

Plant Problem: Xinhai laboratory found that the content and grade of titanium magnetite change significantly with ore grade, and was gradually reduced, the grade was thinner, mostly were 0.5~1.5mm. limonite were granular, crystalline and irregular form.

Xinhai Solution: After mineral processing test, Xinhai decided to use three opening crushing, one roughing, one concentration, and one scavenging magnetic separation process. After the crushing and grinding, the grinding minerals returned to the classifier, which formed a closed cycle, the coarse grain was returned to the closed cycle, the fine grain returned to the original work. Then Xinhai adopted magnetic separator for one roughing, one concentration, and one scavenging , and finally obtained qualified iron concentrate.

Process Indicator: Ore grade: 31.3%; Concentrate grade: 63%; Recovery rate: 84.85%

Ore Property: Fujian customers collected 50kg ore samples at the site, then commissioned Xinhai to conduct the ore property test, then Xinhai concluded that the ore mainly included hard manganese ore, soft manganese ore and manganese soil. The gangue mineral were mainly quartz, kaolin and sericite.

Project Problem: After the ore chemical property test, Xinhai laboratory found that the hard manganese ore and soft manganese ore were ring structure and close symbiosis. The hard manganese ore was compact massive, gelatinous or granular; the soft manganese was oxidation residual or lump. Manganese was very loose and had low grade.

Xinhai Solution: Aiming at the symbiosis of manganese ore, Xinhai adopted two stage one closed crushing, one stage grinding, and gravity separation-magnetic separation process. After the grinding and classification, coarse grain products entered into Xinhai jig for separating, fine grain was sent into Xinhai magnetic separator for stong magnetic separation, and then qualified manganese ore concentrate and tailings were obtained.

Process Indicator: Ore grade: 28.29%; Concentrate grade: 82.03%; Recovery rate: 68.69%