The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 1997
Filed:
Jun. 07, 1995
Edgar J Robert, Glenshaw, PA (US);
Molten Metal Technology, Inc., Waltham, MA (US);
Abstract
The present invention relates to a method and an apparatus for injecting a particulate solid into a molten bath. The method includes forming a liquid stream and directing a first portion of the stream through an ejector for subsequent injection into a molten bath. A second portion of the liquid stream is directed into a receiving vessel. A particulate solid is directed into the receiving vessel, wherein the second portion of the liquid stream and the particulate solid combine to form a slurry. The slurry is directed from the receiving vessel to the ejector, whereby the slurry and the first portion of the liquid stream are combined to form a dilute slurry that is injected into the molten bath. The relative flow rates of the first and second liquid streams can be adjusted in direct relation to any change in the ratio of pressure of the two streams, controlling in this way the volume fraction of solids in the diluted slurry.