Ferrochrome is composed of chromium and iron alloys, and is the important steel alloy additive. According to different carbon ferrochrome divided into high carbon ferrochrome China (including carbon is 4-8%), medium carbon ferrochrome (including carbon of 0.5 ~ 4%), low carbon ferrochrome China (including carbon 0.15 ~ 0.50%), micro carbon ferrochrome China (including carbon is 0.06%), utrasmall carbon ferrochrome China (including carbon less than 0.03%), metallic chromium, silicon chromium alloy, etc. Commonly used and silicon chromium alloy, nitriding ferrochrome, etc. Mainly used as thesteel alloy additive, the past all the refined in steelmaking late to join. Because ofsteelmaking process improvement, now with the AOD method (see refining outside the furnace) and other production stainless steel, steel, the use of carbon ferrochrome (mainly pack material level ferrochrome) outfit furnace, and only in the later add low, low carbon ferrochrome adjust composition, so now is focused on the production of refining carbon ferrochrome China.The carbon ferrochrome China mainly for the production of stainless steel, acid steel and heat resistant steel. Smelting method has electric silicon hot method and hot against the method, etc.Low carbon ferrochrome used in the production of low carbon steel, alloy steel, chrome.High carbon ferrochrome China (including remakes ferrochrome) main use:(1) used as carbon high ball steel, steel and the high alloy agent, improving steel its quench-hardening ability, increase steel abrasion resistance and hardness.(2) used as a cast iron additive, improve the wear resistance of cast iron and improve the hardness, also make the cast iron has good heat resistance;(3) used for no residue method production silicon chromium alloys and medium, low, micro carbon ferrochrome China contain chromium raw materials;(4) used as power needed to production of metallic chromium containing cr raw materials;(5) used for oxygen blowing method of stainless steel smelting raw material.
