What Are the Processes and Equipment Used in the Manganese Processing?

At present, the common manganese processing methods include washing, screening, gravity separation, strong magnetic separation and flotation, etc. Generally, manganese processing method adopts magnetic separation process mostly that has simple operation and strong adaptability. Bedsides, magnetic separation process can be applied in various manganese ores.

1. Crushing and Screening Used in the Manganese Processing

Adopt three stage a closed-circuit crushing process that is the most ideal process for crushing high hardness manganese ore. It can effectively crush raw ore to monomer separation, and get proper grinding fineness. Firstly, the manganese ore is sent to jaw crusher by ore feeder for coarse crushing. And belt conveyor sends them to hydraulic cone crusher for secondary crushing. Then manganese ore is sent to the spring cone crusher for fine crushing. The fine material uses round vibrating screen to screen. The sieve materials are returned to fine crushing, and fine crushing material enters ball mill.

• Coarse crusher machine:

Jaw crusher is mainly used for medium-size crushing of various ores and bulk materials. It can crush those materials whose compressive strength is up to 320Mpa.

• Secondary and fine crusher machine:

Hydraulic cone crusher is an internationally advanced crushing machine, which has high reliability, high crushing efficiency, low operating cost and good product design. It is widely used in mineral processing and gravel aggregate industry with its optimized cavity type, higher production, and better quality.

• Screening equipment:

Round vibrating screen is mainly composed of screen box, sieve mesh, vibrator and vibration damping spring. It is a multi-layer and efficient vibrating screen that is featured with reliable structure, strong excitation force, high screening efficiency, small vibration noise, convenient maintenance.

2. Grinding and Classifying Used in the Manganese Processing

After processed by vibrating screen, 0-12mm manganese powder is evenly sent to ball mill, then sent to spiral classifier. Finally, the qualified material enters to separation process, and coarse grain material is returned to ball mill for grinding.

• Grinding equipment:

Ball mill is a common grinding equipment that is widely used the grinding stage of manganese processing. It can grind ore below 0.075 mm, which realize fully monomer separation to next operations. According to different discharging modes, ball mill can be divided into grid type ball mill and overflow type ball mill two kinds.

• Classifying equipment:

Spiral classifier is one of the classifying equipment used in the manganese processing. Relying on different proportion of solid particles, the sedimentation rate of manganese ore in the liquid is different, so manganese ore can be classified.

3. Separation Used in the Manganese Processing

Manganese ore is sent to magnetic separator for removing impurities. Manganese minerals belong to weak magnetic minerals (specific susceptibility: X＝10×10-6～600×10-6cm3/g) can be recovered by high intensity magnetic separator under Ho = 800 ~ 1600 ka/m (10000 ~ 20000 oe), which can improve 4% ~ 10% manganese grade.

• Magnetic separation equipment

Magnetic separator is widely used in manganese processing, it is suitable for wet magnetic separation of magnetite, pyrrhotite, roasted ore and ilmenite (below 3mm size), and used in the deironing operation of coal, non-metallic minerals and building materials.

• High-intensity magnetic separator

High-intensity magnetic separator has more than 10000-16000 GS magnetic field, it is mainly used in weakly magnetic minerals, such as hematite, limonite, manganese and red mud, and applied to weak magnetic minerals, such as titanium iron ore, wolframite, siderite, chromite.

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