Process for the production of molten pig iron and steel pre-products

A method of producing molten pig iron or steel preproducts and reduction gas in a melt-down gasifier utilizing coal having a C.sub.fix content of less than 80%, comprising the steps of:

• (a) forming a fluidized bed of coke particles having a lower part, said fluidized bed being located in said melt-down gasifier and being formed by adding coal having said C.sub.fix content and injecting an oxygen-containing gas, heat being generated and reducing gas produced in said fluidized bed;
• (b) adding ferrous material from above to said fluidized bed material and reducing said ferrous materials in said fluidized bed to slag and molten pig iron or steel pre-products, said ferrous material comprising at least one of iron sponge particles and pre-reduced iron are particles with a substantial portion of particle sizes of more than 3 mm;
• (c) withdrawing said reducing gas containing coal particles from said gasifier;
• (d) separating said coal particles from said reducing gas;
• (e) generating additional heat by burning or gasifying said separated coal particles;
• (f) supplying said additional heat to said gasifier in a horizontal plane in the lower part of said fluidized bed to supplement the heat generated in said fluidized bed, said oxygen-containing bed being injected at points below said horizontal plane;
• and
• (g) separately drawing off said slag and said molten pig iron or said steel pre-products which collect at the bottom of said gasifier.