The most common manganese ore is anhydrous and water-containing manganese oxide and manganese carbonate. There are currently 150 known manganese minerals, but the manganese content is very high, and they can be enriched in large quantities to form economically valuable manganese minerals but only 5-6 species. Among them, the most important and economically valuable ones are pyrolusite and hard manganese ore, in addition to manganese ore, brown manganese ore, black manganese ore, rhodochrosite and so on. The content of manganese in these minerals can reach about 50-70%, which is an important industrial mineral of manganese. The main uses of manganese ore are metallurgical industry, ferrous metallurgy, non-ferrous metallurgy and chemical industry. According to the characteristics of manganese ore, Kolyric's customized crushing production solutions are well received by users.
Manganese ore production and processing characteristics
At present, the process of processing manganese oxide ore mainly includes three processes of crushing, grinding and beneficiation. Generally, the ore is crushed to 6～0mm or 10～0mm, and then grouped, the coarse level is eliminated, and the fine level is sent to shake. Bed selection. At present, the commonly used crushing equipment is a jaw crusher. After the crushed manganese ore is pulverized by a vertical pendulum mill to produce the required specifications in various fields, the appropriate beneficiation process is used for beneficiation.
Introduction of manganese ore process flow:
In the first step of the manganese ore processing process, the raw manganese ore is crushed at the manganese ore production line site. The bulk manganese ore will be transported to the silo through the loading equipment, and then evenly sent to the jaw crusher by the vibrating feeder for primary broken. After the primary crushing, the manganese ore blocks are sent to the cone crusher by the belt conveyor for medium and fine crushing until the crushed particles meet the feed demand of the mill used in the next stage.
The first stage: crushing and screening
Large pieces of manganese ore are uniformly sent to the jaw crusher or mobile jaw crushing station by the vibrating feeder through the silo for coarse crushing; the coarsely crushed manganese ore is screened by the vibrating screen and sent by the belt conveyor The single-cylinder hydraulic cone crusher is used for medium crushing; the manganese ore material after medium crushing is sent to the multi-cylinder hydraulic cone crusher for fine crushing;
The second stage: milling
The 0-12 mm manganese powder sieved by the vibrating screen is evenly sent to the ball mill for grinding, and is sieved by the spiral classifier, and those that do not meet the requirements are sent to the ball mill to continue grinding;
The third stage: beneficiation
After grinding, the manganese powder is sent to the concentrator: the magnetic separator performs strong magnetic separation to remove impurities, and the treated manganese powder is sent to the dryer for drying to obtain manganese fine powder.
Manganese ore mill-ball mill
Ball mill is a cylindrical milling equipment, which is widely used in the field of ore milling. The purpose of powder milling is achieved through the collision of steel balls. It is widely used in the grinding of cement, silicate products, building materials, refractory materials, fertilizers and various minerals. Ball mill is the key equipment for grinding manganese ore after crushing. It is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, and glass ceramics and other production industries, for dry or wet grinding of various ores and other grindable materials. Ball mill is suitable for grinding various ores and other materials. It is widely used in mineral processing, building materials and chemical industries. Ball mills can be divided into dry and wet grinding methods. According to the different discharging methods, it can be divided into grid type and overflow Two types.
Grinding process of manganese ore ball mill
The manganese ore particles processed by the crusher are loaded into the cylinder by the hollow shaft at the feed end of the ball mill. When the cylinder of the ball mill rotates, the grinding body is attached to the cylinder liner due to inertia, centrifugal force and friction. The cylinder is taken away, and when it is brought to a certain height, it is thrown down due to its own gravity. The falling grinding body crushes the material in the cylinder like a projectile.
The manganese ore particles enter the mill cabin uniformly through the feeding device through the feeding hollow shaft spirally and uniformly. The cabin is equipped with a step liner or a corrugated liner, and various specifications of steel balls are installed. Falling after the height has a heavy blow and grinding effect on the material. After the material reaches the rough grinding in the warehouse, it enters the second warehouse through the single-layer partition board. The warehouse is lined with flat liners and steel balls to further grind the materials. The manganese ore powder is discharged through the unloading grate to complete the grinding operation.
When the cylinder is rotating, the grinding body also slips off. During the sliding process, the material is grinded. In order to effectively use the grinding effect, the grinding body is used to grind the material with a large particle size of the general 20 mesh. Divided into two sections by a partition board, it becomes a double silo. When the material enters the silo, it is crushed by the steel ball. When the material enters the second silo, the steel section grinds the material, and the finely ground materials are discharged from the hollow shaft at the discharge end. When grinding materials with small feed particles, such as sand No. 2 slag and coarse fly ash, the barrel of the mill can be formed as a single-chamber barrel mill without partitions. The grinding body can also be made of steel.
The manganese ore is fed into a hollow cylinder through a hollow shaft journal for grinding. The cylinder is filled with grinding media of various diameters (steel balls, steel rods or gravel, etc.). When the cylinder rotates around the horizontal axis at a certain speed, the medium and raw materials contained in the cylinder will leave the cylinder as the cylinder reaches a certain height under the action of centrifugal force and frictional force. When its own gravity is greater than the centrifugal force, it will leave the cylinder. The inner wall is projected to fall or roll down, crushing the ore due to the impact force. At the same time, during the rotation of the mill, the sliding motion between the grinding media also has a grinding effect on the raw materials. The ground material is discharged through the hollow journal.
More information about the manganese ore grinding mill
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