At present, the smelting of copper processing products generally adopts induction smelting furnace, and also adopts reverberatory furnace smelting and shaft furnace smelting.
Induction furnace smelting is suitable for all kinds of copper and copper alloys. According to the furnace structure, induction furnaces are divided into core induction furnaces and coreless induction furnaces. The cored induction furnace has the characteristics of high production efficiency and high thermal efficiency, and is suitable for continuous melting of a single variety of copper and copper alloys, such as red copper and brass. The coreless induction furnace has the characteristics of fast heating speed and easy replacement of alloy varieties. It is suitable for melting copper and copper alloys with high melting point and various varieties, such as bronze and cupronickel.
Vacuum induction furnace is an induction furnace equipped with a vacuum system, suitable for smelting copper and copper alloys that are easy to inhale and oxidize, such as oxygen-free copper, beryllium bronze, zirconium bronze, magnesium bronze, etc. for electric vacuum.
Reverberatory furnace smelting can refine and remove impurities from the melt, and is mainly used in the smelting of scrap copper.
The shaft furnace is a kind of rapid continuous melting furnace, which has the advantages of high thermal efficiency, high melting rate, and convenient furnace shutdown. Can be controlled; there is no refining process, so the vast majority of raw materials are required to be cathode copper. Shaft furnaces are generally used with continuous casting machines for continuous casting, and can also be used with holding furnaces for semi-continuous casting.
The development trend of copper smelting production technology is mainly reflected in reducing the burning loss of raw materials, reducing the oxidation and inhalation of the melt, improving the quality of the melt, and adopting high efficiency (the melting rate of the induction furnace is greater than 10 t/h), large-scale (the capacity of the induction furnace can be greater than 35 t/set), long life (the lining life is 1 to 2 years) and energy-saving (the energy consumption of the induction furnace is less than 360 kW h/t), the holding furnace is equipped with a degassing device (CO gas degassing), and the induction furnace The sensor adopts spray structure, the electric control equipment adopts bidirectional thyristor plus frequency conversion power supply, the furnace preheating, the furnace condition and refractory temperature field monitoring and alarm system, the holding furnace is equipped with a weighing device, and the temperature control is more accurate.
Post time: Feb-18-2022