Abstract: This invention relates to a method of manufacturing a plurality of molded parts by the steps of (a) providing a plurality of subelements, at least one of said subelements being formed by compression moulding of a sheet so as to define a plurality of recesses therein; (b) welding said subelements together to provide a deformable composite capsule in which said recesses define an inlet channel communicating with a plurality of moulding chambers for forming a plurality of moulded parts; (c) passing powdered material through said inlet channel in said capsule to fill said plurality of moulding chambers therein; (d) evacuating said capsule and essentially sealing said inlet channel; (e) isostatically compacting said capsule to form an essentially dense body therein comprising a plurality of interconnected moulded parts, and (f) separating said moulded parts from one another and cleaning them away from said inlet channel.

Abstract: A process for producing pig iron from iron ore concentrate, in a reactor vessel into which iron ore concentrate, coal, oxygen gas and slag formers are injected beneath the surface of a molten iron bath. According to the invention, the ratio CO.sub.2 /CO in the waste gas (11) from the reactor (2) is increased to a value higher than corresponding to the condition of equilibrium at atmospheric pressure. As a result greater heat is generated in the bath for a specific coal amount. The injected amount of coal in relation to injected amount of concentrate is predetermined for finally reducing pre-reduced iron ore concentrate (4) in the reactor (2). According to the invention, CO and H.sub.2 in the exhaust gas is passed to a pre-reduction step (1), where unreduced iron ore concentrate is pre-reduced and thereafter can be injected into the reactor.According to a preferred embodiment, the reactor (2) is pressurized to cause the CO.sub.2 /CO ratio to increase.