Ferroalloy refining: 1920 quality new silicon calcium later, in order to meet the high quality stainless steel and supply needs of the development of new silicon calcium, began a new stage production of low-carbon ferro-alloys. On the one hand the new Si-Ca wholesale, made in 1898, Goldschmidt thermite Preparation process based on a new type of silicon calcium metal, the development of aluminum smelting some hot carbon-iron alloy and pure metal; another developed areas in the furnace silicon oxide removal method of purifying silicon alloy. Ferroalloy classification: classification according to production method. Can be divided into: blast furnace ferroalloys, including high carbon ferromanganese furnace, low manganese alloys, low ferrosilicon; furnace ferroalloys, including high carbon ferromanganese, high-carbon ferrochrome, ferrosilicon, silicon manganese alloys, silicon-chromium alloy, silicon aluminum, calcium alloy, phosphorus iron, low carbon and low carbon ferrochrome, low carbon ferromanganese, refining vanadium and iron. The new silicon calcium plant, much metallurgy (certified), the new silicon calcium provided by Anyang greatly metallurgical Refractories Limited. Anyang greatly metallurgical Refractories Co., Ltd. (www.aydawei.com) (www.aydwyjgs.com) is Anyang, ferroalloy and products of leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. In much of metallurgical leadership with the staff warmly welcome all inquiries negotiations to create a better future greatly metallurgy.