The raw materials are dried in a drying furnace into standard raw materials suitable for dryness and humidity, cooled and put into a molding machine (rod making machine), plasticized at high temperature and high pressure, then molded into firewood sticks (semi-finished products), and carbonized in a carbonization furnace (various types of brick and tile kilns in the carbonization furnace) to obtain the finished product of machine-made charcoal.
Extended data
Pig iron from charcoal smelting has the characteristics of fine grain, compact casting and no crack. Pig iron produced by charcoal contains less impurities and is suitable for producing high-quality steel. Because of its reducibility, charcoal can be used to reduce ores and smelt metals in metallurgical industry.
In the production of nonferrous metals, charcoal is often used as a surface flux. When nonferrous metals melt, the surface flux forms a protective layer on the surface of molten metal to separate the metal from the gas medium, which can not only reduce the splash loss of molten metal, but also reduce the gas saturation in the melt. A large amount of charcoal is also used to produce crystalline silicon, and the charcoal used to produce crystalline silicon should not contain green charcoal heads and excessive ash.
All steels requiring high surface hardness, good wear resistance and good center toughness should be carburized. The carbon-containing mixture used for carburizing steel is called carburizing agent. The carburizing effect of pure carbon is poor. Therefore, charcoal is often used as raw material, and a certain amount of contact agent is added to make carburizing agent.
Baidu encyclopedia-charcoal
Baidu encyclopedia-mechanism charcoal