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Scrap iron and steel reclaims processing technique
From;    Author:Stand originally
Magnetic separation

Magnetic separation is the magnetic difference of all sorts of material in using solid waste material, a kind of grading processing technique has in inhomogenous magnetism sound. Magnetic separation is grading the method with iron radical the most effective metal. After inputting solid trash magnetic separation machine, magnetic grain is magnetized below effect of inhomogenous magnetism sound, get thereby the action of magnetic field appeal, make on cylinder of magnetic grain engulf, enter a makings to carry eduction along with cylinder; Non-magnetic the magnetic field active force that grain gets as a result of place is very small, still stay in trash. The magnetic field source that magnetic separation place uses is electromagnet or permanent magnet commonly two kinds.

Clean

Cleaning is the chemical dissolvent that uses all sorts of differring or hot exterior activator, cleared steel smeary, ferruginous, silt of the surface. Commonly used will handle the engine that gets pollution of cutting engine oil, grease, smeary or other attachment, bearing, gear to wait in great quantities.

Warm-up

Useless steel often sticks the contaminant that has oil and grease and so on, the grease that cannot evaporate immediately and oily meeting cause pollution to the metal of melt. After the useless steel be affected with damp be affected with damp that open air deposits, the moisture as a result of be mingled with and other grease and oily meeting cause pollution to the metal of melt. After the useless steel be affected with damp be affected with damp that open air deposits, wait for easy vaporization stock as a result of the moisture of be mingled with and other grease, because scamper cracks action and the meeting expands quickly inside furnace, unfavorable also add steel-making oven. For this, a lot of steelworks use warm-up to abandon the method of steel, use blaze is direct and roast scrap iron and steel, burn go moisture and grease, throw steel heat again. In metallic warm-up system, basically need to solve two problems: The first, the grease of incomplete combustion can produce many hydrocarbon, can cause air pollution, must try to solve; The 2nd, because the useless steel measurement on conveyer belt is different, ply is different, cause warm-up and inflammation inhomogenous, the contaminant on useless steel cannot be cleaned thoroughly sometimes.