Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1984-12-03
1986-10-28
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
C22C 3308
Patent
active
046196960
ABSTRACT:
An additive for metallurgical liquids is disclosed which consists of an alloy formed by admission of one or more gas phase solutes into one or more liquid phase solvents. The solvent is a substance with semiconductor characteristics, and is selected from silicon, germanium, silicon and germanium alloys with various elements for the periodic table and A.sup.III B.sup.V and A.sup.II B.sup.VI compounds where II,III,V, and VI are the respective groups in the periodic table. The solute is a low vapor pressure substance and is selected from lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, cadmium, phosphorus, arsenic, antimony, bismuth, selenium, tellurium, bromine, and iodine in their elemental states or as oxides or salts thereof, in particular carbonates, chlorides, fluorides, or nitrides. The solvent and solute are used in by-weight ratios ranging from 10.sup.-6 % to 99%.
Also disclosed is a method of preparing the additive for metallurgical liquids, which consists of liquefying the solvent, bringing the solute to the gas state by heat application, admitting the gasified solute into the liquefied solvent, this admission causing at least a partial dissociation of the gasified solute molecules into atoms and/or ions, and cooling the solute-enrichened solvent to obtain the additive of this invention.
Also disclosed is a device for implementing this method.
REFERENCES:
patent: 4042377 (1977-08-01), Bienvenu
Josif Albert
Modiano Guido
O.E.T. - Metalconsult S.r.l.
Rosenberg Peter D.
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