Manganese metal powder production methods and processes

Fire manganese is massive and difficult to crush. Wet electrolytic manganese is flake, easily crushed and with high purity. At the same time, manganese powder production scale is generally larger with lower added value.  These factors determine that the mechanical crushing method is suitable for production of manganese powder and the materials is electrolytic manganese metal. The methods for industrial applications are: milling method, ultra-fine grinding method, method of roll crusher and vertical mill grinding method. The basic principle of mechanical crushing method is shattering pieces manganese into manganese powder with manganese’s brittle by cutting, impact, bending, extrusion, grinding, etc.  

Production of manganese powder milling: milling legal principle is that when manganese powder mill operation, the grinding media along with the centrifugal force and friction materials under the effect of being raised to a certain height, due to gravity from the tube wall and fall along the parabolic trajectory Then, they are also raised to a certain height, then they fall along the parabolic trajectory. Again and again, so in between the grinding media materials were crushed by the impact of role; the same time, rolling and sliding grinding media, the particles by grinding, friction, shear and other effects have been ground.

Production of manganese metal powder jet mill: high-pressure jet mill is a more mature and ultra-fine grinding technology. It uses high-speed airflow (300 ~ 500m / s) between the energy of the particles have an impact, impact and friction, leading to particle smash.

With a jet mill for grinding, in addition to the jet mill itself, but also auxiliary equipment, such equipment, auxiliary equipment, including air flow occurs, air purification equipment and processing equipment, feeding equipment, finished harvesting equipment, waste gas stream capture entrained material recovery facilities, dust removal equipment. Due to manganese powder explosive, inert gas flow must be crushed, the characteristics of the process layout should ensure that the recycling of inert gas.

Production of manganese high-pressure roller mill flour: high-pressure roller mill grinding is a relatively new device, it has a high efficiency, low energy consumption, wear light, noise, easy operation, wide application and so on. Manganese hard and brittle, more suitable for high pressure roller mill grinding, production of manganese powder with high-pressure roll, not only high production efficiency, and relatively easy system, dust explosion-proof seal.

Mixing mill production of manganese powder: liquid stirred media mill generally be there, more suitable for preparation of manganese powder slurry, when manganese powder for the production of chemical products needed by the next stage of wet processing, often with stirring mill, and water media exists, then also need to be taken to remove hydrogen safety problems. Manganese powder with water due to reaction of hydrogen release, especially in the grinding process, the newly formed manganese powder and water of metal powder exporter are even more intense, the workshop should be no pyrotechnics, and well ventilated.

Anti-oxidation manganese powder production: antioxidant manganese powder forms an anti-oxide film on the surface of general electrical manganese powder and prevents its further oxidation in contact with air. There are three key steps in the production of anti-manganese oxide powder: First, the production of oxygen electrolytic manganese powder. The second is the anti-oxidation treatment, also called surface passivation of manganese powder. Third, the environment should be dry. The drying temperature should not too high, and it needs protection from inert gas.