Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD OF PROCESSING ZINC, CADMIUM AND LEAD BEARING FURNACE FLUE DUST BY HEATING IN THE PRESENCE OF CARBONACEOUS MATERIAL
Document Type and Number:
WIPO Patent Application WO2001098547
Kind Code:
A3
Abstract:
A method of processing flue dust that contains one or more compounds from a first group of zinc, lead and cadmium compounds, and contains iron compounds, involves heating the flue dust to cause a substantial portion of one or more of the compounds of the first group to become gas-borne. A carbonaceous material is introduced to the remaining flue dust, and the flue dust/carbonaceous material mixture is heated to cause a substantial portion of the remaining compounds from the first group to become gas-borne while retaining a substantial portion of the iron in a non-gas-borne condition. The gas-borne compounds are separated from the non-gas-borne compounds. The heating vessel is preferably a rotating cylindrical retort.

Inventors:
HORNE DEANE A
RINKER FRANKLIN G
COOLIDGE DENNIS W
Application Number:
PCT/US2001/019549
Publication Date:
June 27, 2002
Filing Date:
June 19, 2001
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MAUMEE RES & ENGINEERING INC (US)
International Classes:
B09B3/00; B07B4/06; B09B5/00; C22B5/10; C22B7/02; C22B9/02; C22B13/02; C22B17/02; C22B19/28; C22B19/30; C22B19/34; F27D17/00; (IPC1-7): C22B7/02; C22B19/38; C22B5/10
Foreign References:
EP0654538A11995-05-24
US5906671A1999-05-25
EP0972849A12000-01-19
US5547490A1996-08-20
Other References:
PATENT ABSTRACTS OF JAPAN vol. 017, no. 499 (C - 1109) 9 September 1993 (1993-09-09)
PATENT ABSTRACTS OF JAPAN vol. 011, no. 357 (C - 458) 20 November 1987 (1987-11-20)
PATENT ABSTRACTS OF JAPAN vol. 012, no. 365 (C - 532) 29 September 1988 (1988-09-29)
STROHMEIER G ET AL: "STEELWORKS RESIDUES AND THE WAELZ KILN TREATMENT OF ELECTRIC ARC FURNACE DUST", IRON AND STEEL ENGINEER, ASSOCIATION OF IRON AND STEEL ENGINEERS. PITTSBURGH, US, vol. 73, no. 4, 1 April 1996 (1996-04-01), pages 87 - 90, XP000595696, ISSN: 0021-1559
Download PDF: