Metal or alloy forming reduction process and apparatus

Details Metal or alloy forming reduction process and apparatus Metal or alloy forming reduction process and apparatus

1984-05-11

1987-08-18

Lieberman, Allan M.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Sintering which includes a chemical reaction

75 84, 75 844, 75 845, 419 34, 419 46, C22C 100, C22C 1400, C22C 1600, C22C 2702

Patent

active

046876324

ABSTRACT:
A reduction process for the production of a product metal which includes the step of reacting at least one reducible metal compound and a reducing metal in a sealed reaction zone by heating the reactants without any substantial agitation from a temperature below the melting point of the reducing metal to a temperature which is both above the melting point of the reducing metal and below the temperature at which the reduction reaction between the metal compound(s) and the reducing metal will proceed spontaneously; initiating a reduction reaction between the reducible metal compound(s) and a molten reducing metal by causing the surface of the molten reducing metal to be suddenly disrupted, thereupon releasing the reaction mixture from said first reaction zone into a product collection zone while permitting the reduction reaction to continue to thereby produce a reduced metal or alloy in zero valent state; and apparatus for conducting the above process.

REFERENCES:
patent: 3455678 (1969-07-01), Shapiro et al.
patent: 4032328 (1977-06-01), Hurd
patent: 4437888 (1984-03-01), Jecker

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