Vasipari Kutato Intezet

Vasipari Kutato Es Fejleszto Vallalat

Istvan Tamas

Szilard Riederauer

Gyula Kiss

Jozsef Kiss

Lajos Tamas

Antal Kaldor

Janos Kovacs

A process for the continuous preparation of silicon-base complex ferrous alloys from cheap raw materials by preparing a charge with a high electric resistance and reducing the same in an electric arc furnace. A charge is assembled which contains the total amount of carbon in a 0.82 to 0.99-fold quantity of that required to reduce all oxides of the charge to elements and achieving this carbon content by preparing pellets which, in addition to the binding material, contain

Process for preparing silicon-base complex ferrous alloys

A process for reducing the inclusion content of steels and refining their structure which comprises the steps of subjecting molten steel containing inclusions to a pressure of at least 1 atm; removing inclusions from the molten steel by introducing therein at said pressure an inclusion-removing alloy containing calcium or magnesium; and thereafter applying vacuum to the molten steel to evaporate residual calcium or magnesium from the steel.

Process and apparatus for reducing the inclusion content of steels and

The invention relates to a new process for the simultaneous production of magnesium and cement from calcined dolomite or calcium and cement from calcined lime. According to the invention calcined dolomite or calcined lime is reduced under a pressure lower than 10 torr and at a temperature of 1300.degree. to 1600.degree. C. with a reducing agent containing silicon and aluminum in a weight ratio of 4:1 to 1:1, wherein the total amount of silicon and aluminum comprises 50 to 100% by weight. 100 to 200 parts by weight of the reducing agent are applied to convert 600 to 800 parts by weight of calcined dolomite or 700 to 1000 parts by weight of calcined lime. In contrast to the known procedures, the new method according to the invention provides cement as by-product instead of a useless slag.

Metallothermal process for the simultaneous production of magnesium and

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Budapest, Hungary

Istvan Tamas