Introduction to the allocation process of manganese ore dressing equipment
At present, with the continuous development and progress of mineral processing technology, more and more rare metals have been developed and utilized. For example, manganese ore, lead zinc ore, etc. As manganese ores, most of them are lean ores, and their processing is necessary. However, because most manganese ores are fine or finely distributed, and there are a considerable number of high phosphate ores, high iron ores and paragenetic non-ferrous metals, it is very difficult for manganese ore dressing and processing. At present, the commonly used manganese ore dressing equipment mainly includes ore washing, screening, gravity separation, strong magnetic separation and flotation.
1. Ore washing
Ore washing is to separate ore from mud by hydraulic flushing or additional mechanical scrubbing. Common equipment includes drum screen, spiral ore washing machine, etc. The ore washing operation is often accompanied by screening, such as washing directly on the vibrating screen or sending the ore sand (clean ore) obtained by the ore washing machine to the vibrating screen for screening. Screening can be used as a vertical operation to separate products with different particle sizes and grades for different purposes.
2. Reselect
At present, gravity concentration is only used to separate manganese ores with simple structure and coarse embedded particle size, especially for manganese oxide ores with large density. Common methods include heavy medium beneficiation, jigging beneficiation and shaking table beneficiation.
3. High intensity magnetic separation
Manganese mineral belongs to weak magnetic mineral, which can be recovered in the strong magnetic separator with a magnetic field strength of 1000~20000oe, and the manganese grade can generally be improved by 4%~10%. Because of the simple operation, easy control and strong adaptability of magnetic separation, it can be used to separate various manganese ores. In recent years, it has played a leading role in manganese ore dressing. At present, medium and fine high intensity magnetic separators are widely used in domestic manganese ores. Coarse and fine high intensity magnetic separators are also gradually applied, while micro and fine high intensity magnetic separators are still in the experimental stage.
4. Gravity magnetic separation
Taking the Liancheng Manganese Mine Heavy Magnetic Separation Plant as an example, it mainly deals with leached manganese oxide ores. The AM-30 jig is used to treat 30~3mm washed ores. A high-quality manganese concentrate containing more than 40% manganese can be obtained, which can be used as the raw material of battery manganese powder after being manually cleaned. After jigging tailings and washed ore less than 3mm are grinded to less than 1mm, the manganese concentrate grade shall be increased by 24%~25% to 36%~40% by using high intensity magnetic separator for separation.
5. Strong magnetic flotation
According to the industrial test, the grinding process adopts rod grinding ball grinding stage, and the equipment scale is Φ 2100mm × 3000mm wet ball mill. For high intensity magnetic separator Φ Model 2000 electric separator mainly uses pneumatic mechanical flotation machine.
In addition to the above-mentioned manganese ore dressing equipment, there are also fire enrichment and chemical manganese separation methods, which are also common beneficiation methods in production and life, and also have a certain historical background. If you want to know more about manganese ore dressing equipment, please consult our online customer service. SMMVIK will serve you wholeheartedly.