I. Introduction: A binary alloy of ferro silicon calcium lumps, belonging to the category of ferroalloy.It is mainly composed of silicon and calcium, and contains different amounts of impurities such as iron, aluminum, carbon, sulfur and phosphorus. Ii. Purpose: Iron and steel industry as calcium additives, deoxidizer, desulfurizer and non - metallic inclusion denaturant.Cast iron industry as an inoculant and denaturant. Iii. Common Specifications: BrandChemical composition% CaSi Ca31Si603150-65 Ca28Si602850-65 Ca24Si602455-65 Ca20Si552050-60 Ca16Si551650-60 Iv. Development History BOZEL General Electrochemistry company, France, produced silicon-calcium alloy in an electric furnace by the electrosilicon-thermo method around 1907, followed by the electrocarburization method.China smelted calcium and silicon at a calcium carbide plant in Taiyuan in the 1950s.In 1964, Beijing ferroalloy factory successfully studied the process of si-Ca alloy smelting by stratified feeding. V. Features: Ferro silicon calcium lumps obtained from silica, lime and coke in a strong reducing atmosphere of 1500-1800 degrees. Vi. Delivery Method: Advance payment will be delivered within 10 days upon receipt of account. Vii. Payment Terms: Telegraphic transfer or letter of credit.China Calcium Silicon manufacturers website:http://www.henanstarferrosilicon.com/calcium-silicon/