Charles C Burrows

US Patent:

56675550, Sep 16, 1997

Filed:

Feb 21, 1996

Appl. No.:

8/604178

Inventors:

Allan S. Myerson - Brooklyn NY
Charles A. Burrows - Atlanta GA
Charles W. Sanzenbacher - Charlotte NC
Paul R. DiBella - Ball Ground GA

Assignee:

Metals Recycling Technologies Corp. - Atlanta GA

International Classification:

C22B 314

US Classification:

75419

Abstract:

A method for the removal of calcium byproducts created during the production of an iron-based feedstock suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by treating the waste stream with an ammonium chloride leaching solution, treating the leachant with a soluble ammonium salt in which the negative ion will form an insoluble compound with calcium, and separating the undissolved precipitates comprising iron compounds and calcium compounds from the leachant solution. The undissolved precipitants may be treated further by elevated temperature roasting, resulting in the iron-based feedstocks.

US Patent:

55713068, Nov 5, 1996

Filed:

Dec 21, 1994

Appl. No.:

8/360394

Inventors:

Allan S. Myerson - Brooklyn NY
Charles A. Burrows - Atlanta GA
Paul R. DiBella - Ball Ground GA

Assignee:

Metals Recycling Technologies Corp. - Atlanta GA

International Classification:

C22B 314

US Classification:

75430

Abstract:

A method for the production of an enriched iron product, specifically direct reduced iron and iron oxide suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by combining an iron oxide rich material such as mill scale and/or used batteries with the waste streams, treating the combined waste stream with an ammonium chloride leaching solution, separating the undissolved precipitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron feedstocks.

US Patent:

55826318, Dec 10, 1996

Filed:

Jan 31, 1995

Appl. No.:

8/380950

Inventors:

Allan S. Myerson - Brooklyn NY
Charles A. Burrows - Atlanta GA
Charles Sanzenbacher - Charlotte NC
Paul R. DiBella - Ball Ground GA

Assignee:

Metals Recycling Technologies Corp.

International Classification:

C22B 1934
C21B 1314

US Classification:

75430

Abstract:

A method for the production of an iron-based feedstock suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by combining an iron poor material such as exhaust fumes from metals production processes with the waste streams, treating the combined waste stream with an ammonium chloride leaching solution, separating the undissolved precipitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron-based feedstocks.

US Patent:

58490639, Dec 15, 1998

Filed:

Jun 26, 1996

Appl. No.:

8/670454

Inventors:

Allan S. Myerson - Brooklyn NY
Charles W. Sanzenbacher - Charlotte NC
Peter J. Robinson - Fergus, CA
Charles A. Burrows - Atlanta GA
Paul R. DiBella - Ball Ground GA

Assignee:

Metals Recycling Technologies Corp. - Atlanta GA

International Classification:

C22B 1934

US Classification:

75416

Abstract:

A method for producing direct reduced iron or/and pig iron from an industrial waste materials stream such as EAF and blast furnace dust generally comprising the steps of separating the materials contained in the waste materials stream by magnetic separation or flotation, briquetting the iron-containing materials separated during the separation process with carbon, and providing the briquettes to a reduction furnace or/and to a small scale blast furnace or cupola furnace to produce direct reduced iron or/and pig iron, respectively. The exhaust streams from the process are further treated to recover chemical values and to allow the recycle of the exhaust streams to the main process.

US Patent:

56834888, Nov 4, 1997

Filed:

Jun 7, 1996

Appl. No.:

8/665043

Inventors:

Allan S. Myerson - Brooklyn NY
Charles A. Burrows - Atlanta GA
Paul R. DiBella - Ball Ground GA

Assignee:

Metals Recycling Technologies Corp. - Atlanta GA

International Classification:

C22B 702
C22B 314
C22B 346

US Classification:

75420

Abstract:

A method for the recovery of iron products, specifically direct reduced iron and iron oxide suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by treating the waste streams with an ammonium chloride leaching solution, separating the undissolved precipitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron feedstocks.