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AssigneesSKW Trostberg Aktiengesellschaft, Metallgesellschaft Aktiengesellschaft
InventorsFriedrich Wolfsgruber, Ernst A. Weiser, Werner Gmohling, Hans Kern, Karl J. Reifferscheid
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The present invention provides a treatment agent for cast iron melts based upon ferrosilicon magnesium with a silicon content of from 40 to 80% by weight and a magnesium content of from 0.5 to 15% by weight, said agent being in the form of granules with a specific surface area of from 0.2 to 0.8 m.sup.2 /g. according to BET. The present invention also provides a process for the production of this treatment agent, wherein a jet of molten ferrosilicon magnesium alloy is directed on to a bounce plate made of fire-resistant material and the melt droplets which bounce back from bounce plate are allowed to solidify in a liquid-filled collection receiver.
A treatment agent for cast iron melts, the treatment agent comprising ferrosilicon magnesium with a silicon content of from 40 to 80% by weight and a magnesium content of from 0.5 to 15% by weight, said agent being in the form of granules with a specific surface area of from 0.2 to 0.8 m.sup.2 /g. according to BET.
A process for the production of a treatment agent for cast iron melts, the treatment agent comprising ferrosilicon magnesium with a silicon content of from 40 to 80% by weight and a magnesium content of from 0.5 to 15% by weight, said agent being in the form of granules with a specific surface area of from 0.2 to 0.8 m.sup.2 /g. according to BET comprising the steps of directing a jet of molten ferrosilicon magnesium alloy on to a bounce plate made of fire-resistant material and allowing the melt droplets which bounce back from the bounce plate to solidify in a liquid-filled collection receiver.
In a method for the production of cast iron with spheroidal or vermicular graphite, the improvement comprising introducing into the iron melt a treatment agent comprising ferrosilicon magnesium with silicon content of from 40 to 80% by weight and a magnesium content of from 0.5 to 15% by weight, said agent being in the form of granules with a specific surface area of from 0.2 to 0.8 m.sup.2 /g. according to BET.
A treatment agent for cast iron melts, the treating agent comprising ferrosilicon magnesium with a silicon content of from 40 to 80% by weight and a magnesium content of from 0.5 to 15% by weight, said agent being in the form of granules with a specific surface area of from 0.2 to 0.8 m.sup.2 /g. according to BET;
Dependencies are inferred from the claim text.