Abstract: A method for eliminating a dispersion medium from a molded product obtained by plasticizing-molding or casting-molding one or more of metallic and ceramic powders, wherein the elimination process is carried out in a supercritical liquid carbon dioxide atmosphere without heating to higher temperatures.

Abstract: A process for recovering and utilizing useful substances from a molten metal produced, when manufacturing a steel slag cement from a steel slag discharged from a top-blowing oxygen converter, during a reduction treatment of steel slag, which comprises the steps of: subjecting, in an acidic refining furnace, said molten metal to a primary oxidation refining treatment and a secondary oxidation refining treatment to recover a primary slag containing a large amount of TiO.sub.2 and SiO.sub.2 and a secondary slag containing a large amount of MnO and V.sub.2 O.sub.5, said primary slag being utilized as a blast furnace burden raw material serving as a TiO.sub.2 source, and said secondary slag being utilized as a raw material for producing ferromanganese and ferrovanadium; then, subjecting, in a basic Kaldo furnace, said molten metal to an oxidation refining treatment several times to recover a low-phosphorus high-quality steel and a slag, said slag being utilized as a Thomas phosphoric fertilizer.

Abstract: A steel slag cement manufactured by reducing a steel slag discharged from a steelmaking furnace such as a converter, an open-hearth furnace or an electric arc furnace, and then oxidizing the steel slag thus reduced, which consists of, in weight percentage:CaO : 68 to 72%,SiO.sub.2 : 22 to 26%,Al.sub.2 O.sub.3 : 1 to 3%,Fe.sub.2 O.sub.3 : 0.2 to 1.0%,P.sub.2 o.sub.5 : 0.1 to 0.6%,TiO.sub.2 : 0.4 to 0.9%,MnO : trace to 0.4%,MgO : 0.3 to 3.0%,CaF.sub.2 : 0.3 to 2.0%,and the balance incidental impurities.