The vast majority of manganese ores in our country belong to lean ores, including: manganese ore, black manganese ore, Pyrolusite, Hollandite, Rhodochrosite, Braunite, etc. The manganese ore dressing equipment must be used for manganese ore dressing production line process treatment. However, due to the fact that most manganese ores are fine or micro particle embedded, and have a large amount of high phosphorus ore, high iron ore, and co (accompanying) beneficial metals, the processing of manganese ore beneficiation production lines is very difficult.
The commonly used manganese ore beneficiation production lines currently include: manganese ore beneficiation production line washing operation, manganese ore beneficiation production line screening operation, manganese ore production line gravity separation process, manganese ore production line strong magnetic separation process, manganese ore production line flotation process, as well as pyrometallurgical enrichment and chemical selection.
Manganese ore beneficiation equipment production line and manganese ore beneficiation equipment:
Throughout the entire manganese ore production line, there are many large and small manganese ore beneficiation equipment. Here, we will introduce important manganese ore beneficiation equipment, including vibration feeders, polyethylene jaw crushers, polyethylene jaw crushers, vibration screens, silos, pendulum feeders, electromagnetic vibration feeders, ball mills, spiral classifiers, high-frequency screens, mixing drums, flotation machines, high-efficiency thickeners, filter presses, filters, dryers, etc.
The scope of application for the production line of manganese ore beneficiation equipment and the process flow of manganese ore production line:
Manganese ore production line beneficiation of weak magnetic minerals, such as Hematite, Limonite, Ilmenite, Wolframite, tantalum niobium ore, etc.
Non metallic manganese ore production line for iron removal and purification, such as quartz, feldspar, nepheline, fluorite, sillimanite, lithium sulfide, kaolin, etc.
1. Manganese ore beneficiation production line washing and manganese ore beneficiation production line screening.
The manganese ore beneficiation production line uses hydraulic flushing or additional mechanical scrubbing to separate the ore from the mud. Commonly used manganese ore beneficiation equipment includes washing screens, cylindrical washing machines, and trough washing machines.
The washing operation of manganese ore beneficiation production line is usually accompanied by screening. For example, washing directly with water on the vibrating screen, or sending the ore sand (clean ore) obtained from the washing machine to the vibrating screen for screening. As a vertical operation, screening can provide products with different particle sizes and grades for different purposes.
The second is the gravity separation process of the manganese ore beneficiation production line.
At present, the manganese ore beneficiation production line gravity separation process is only used to select manganese ore with simple structure and coarse embedded particle size. The manganese ore beneficiation production line gravity separation process is particularly suitable for high-density oxidized manganese ore. The commonly used methods include heavy medium manganese ore production line beneficiation, elimination of manganese ore production line beneficiation, and shaking table manganese ore production line beneficiation.
The current process for processing manganese oxide ore production lines in China generally involves crushing the ore to 6-0mm or 10-0mm, and then grouping it into groups, coarse jigging, and fine feeding to a shaking table for selection. The manganese ore dressing equipment is mostly Sawtooth wave type and 6-S type shakers.
The third is the strong magnetic separation process of the manganese ore beneficiation production line.
Manganese mineral is a weakly magnetic mineral (with a specific magnetization coefficient of X=1010-6~60010-6cm3/g), which can be recycled in a strong magnetic field separator with a magnetic field strength of Ho=800~1600kA/m (10000~20000oe), and can generally increase manganese grade by 4%~10%.
Due to the simple operation, convenient control, and strong adaptability of the strong magnetic separation process in the manganese ore beneficiation production line, the strong magnetic separation process can be used for the selection of various manganese ores. In recent years, the strong magnetic separation process in the manganese ore beneficiation production line has occupied a dominant position in manganese ore beneficiation. Various new types of strong magnetic machines with coarse, medium, and fine particles have been successfully developed. At present, the medium particle high intensity magnetic separator is widely used in domestic manganese ore, and coarse and fine particle high intensity magnetic separators are gradually being applied. Micro particle high intensity magnetic separators are still in the experimental stage.
4、 Manganese ore beneficiation production line gravity magnetic separation process.
At present, the newly built and renovated manganese ore beneficiation production lines in China have heavy magnetic separation plants such as Fujian Liancheng, Guangxi Longtou, Jingxi, Thunderbolt, and other manganese mines. For example, the Liancheng Manganese Mine Heavy Magnetic Separation Plant mainly processes leached oxidized manganese ore, and uses an AM-30 jig to process 30-3mm washing ore to obtain high-quality manganese ore with a manganese content of over 40%. Then, impurities are manually removed, which can be used as raw materials for battery manganese powder. After the tailings and washing ore with a diameter of less than 3mm are eliminated and ground to less than 1m, the manganese ore dressing production line high intensity magnetic separator is used for selection. The grade of manganese ore should be increased by 24% -25%, reaching 36% -40%.
5. Manganese ore beneficiation production line strong magnetic flotation.
At present, only Zunyi Manganese Mine adopts the strong magnetic flotation technology of manganese ore beneficiation production line. The ore is a low manganese, low phosphorus, high iron manganese ore dominated by manganese carbonate.
The main equipment for gravity manganese ore beneficiation in manganese ore is a jig, and sometimes a shaking table is also used. However, due to the inability of its selected particle size and processing capacity to meet the requirements of large-scale production, the application of the shaking table in gravity manganese ore beneficiation equipment is very extensive. Especially with the successful emergence of large skip machines, the application of gravity manganese ore beneficiation equipment has become more widespread. Jumping machine is a manganese ore beneficiation equipment that uses the difference in specific gravity (density) between minerals and waste rock for separation. It has the advantages of high efficiency, energy conservation, environmental protection, large beneficiation particle size, and wide beneficiation particle size.
The magnetic separation process flow of the manganese oxide production line mainly uses a strong magnetic separator to perform magnetic separation on medium and fine particle manganese ores, which is suitable for manganese oxide ores embedded in medium and fine particles. The crushing and screening processes are the same as the gravity separation process, and the manganese ore beneficiation equipment used mainly includes: crushers, high-efficiency impact crushers, vibrating screens, manganese ore strong magnetic separators, etc.