Use flaky metallic manganese as the raw material, in an inert gas or an aqueous medium by mechanical shearing, impact extrusion, the physical effect of the grinding, etc. The crushing and manganese powder can be obtained by air classification or sieving.
Manganese powder traditional processing equipment have ball mill, a high-pressure roller mill, vertical mill or the like. With the introduction of air jet mill technology and self-development, a high-speed jet mill as a new kind of grinding equipment for manganese metal ultrafine grinding technology conditions, particles collide and cracked under the impact of high-pressure air flow, to obtain particle size the small particle size distribution and narrow particle rules powder activity, especially for electronic grade manganese products deep processing, it is worthy of attention and study. Stirred mill, milling equipment manganese, pulverized in a medium of pure water to prepare a slurry or suspension applied directly to the production is also taken in the production of the wet preparation of manganese products. Equipment selection, manufacturing processes such as oxidation and explosion-proof once restricted the development of China's manganese powder processing, made a new breakthrough in technology research and provide technical support for large-scale industrial production.
With the development of the iron and steel smelting industry, flaky manganese increasingly widespread application. But there are still a number of iron and steel enterprises with large electric furnace operation, the manganese’s quality is small and is easily oxidized and difficult to apply, pyrometallurgical production of manganese products couldn’t reach the quality requirements of special steel, decided there is still some market-based of using electrolytic manganese metal to make metal manganese ingots. Some companies take advantage of the intermediate frequency electric furnace, the EMM chip melting, slagging, ingot broken into irregular lumps of 20 ~ 100mm as manganese metal ingots products for sale. Due to its high energy consumption, low value-added, market demand, the use of of manganese metal piece production of ingots manganese products development is restricted, but many manufacturers using low grade manganese production of the product is still a deep-processing method.
Nitrided manganese, also known as nitrided manganese, nitrogen in the manganese metal in the nitride and the morphology of the solid solution of manganese. The nitriding Manganese Production: liquid metal manganese nitriding; the powdery solid manganese powder nitriding and nitriding manganese metal powder and nitrogen-containing substances bond pressure grilled sintering. Many countries produce nitrided manganese multi the manganese powder solid Production nitride: the manganese powder in the electric furnace, to pass into the preheated nitrogen gas at a certain temperature, to obtain manganese nitride products which content 5% to 7% nitrogen.
Manganese tetroxide industrial production began in the 80s of the last century. The rapid development of industrial production in 1995, and currently has a production capacity of 25,000 T, ranking first in the world. Manganese tetroxide by manganese salt or manganese oxide prepared, but industrial production generally use the oxidation process of electrolytic manganese metal powder suspension. And by adjusting the amount of additive and reaction speed, supplemented with surface active agent prepared electronic grade products.
Currently, according to the information by metal powder supplier, the main produce Mn-Zn ferrite is still take high purity low Miscellaneous superfine active Fe2O3, Mn3O4 and ZnO as raw materials, after milling, pelletizing, sintering, doping processes obtained powder products. In recent years, with the chemical co-precipitation of in-depth study of the process, the direct preparation of Mn-Zn ferrite with manganese metal has been used in industrial production, and show good prospects.
Source:http://www.mhcmp.com
The application of tungsten in various industries
Steel Industry Most of tungsten applied in the production of special steels. The widely used high-speed steel was containing 9-24% of tungsten, 3.8-4.6% of chromium, 1-5% of vanadium, 4-7% of cobalt, 0.7-1.5% of carbon.
Magic effects of coconut oil
According to records, coconut oil can be regarded as the nobility of skin care plant extracts. It was rich in exotic tension of tropical plants, which can enhance the contractile force of the pores, perfectly beautify and nourish the skin.
Exploring the Potentials of Nano-Aluminum Powder
Nano-aluminum powder, a material with remarkable properties due to its minuscule particle size, is revolutionizing various industries with its high reactivity and large specific surface area. Unlike its bulk counterpart, nano-aluminum powder begins to oxidize at a lower temperature of 550°C, compared to the 950°C oxidation point of ordinary aluminum. This lower ignition energy and full combustion without apparent cohesion make it a superior choice for applications requiring high energy and efficiency. The unique characteristics of nano-aluminum powder, such as faster burning rates and greater heat release, are largely influenced by its synthesis method, which determines its particle size, surface area, and shape.
