In China, laterite ore is a better technology choice for the production of ferronickel (nickel pig iron) in submerged arc furnaces. At present, the most suitable process route is considered to be laterite-after drying, crushing and agglomeration-smelting in an electric furnace with coke and solvent-producing crude nickel pig iron-reducing C, SI, S, P and other impurities The converter is refined to obtain the granulation of the molten iron, or the molten iron is directly smelted into stainless steel. The above-mentioned process of using laterite ore to directly process stainless steel products has been realized by enterprises such as Inner Mongolia Mingtuo Company and Guangxi Beihai De Nickel Industry.
From the perspective of the production process, resource conditions, product quality, etc., the process technology of pyro-ferronickel smelting is diverse. At present, there are blast furnace method, electric furnace thermal reduction method, rotary furnace direct reduction-submerged arc furnace melting process, etc.; in terms of product composition, there are single nickel pig iron, nickel iron, nickel chromium composite alloy, or nickel chromium and cobalt composite Production methods of various multi-element alloys. This article involves the production technology of electric furnace smelting nickel pig iron and ferronickel, as well as the preparation and use of self-baking electrodes (electrode paste) and other related technical issues.
Please Leave your message you want to know! We will respond to your inquiry within 24 hours!