Title:
METHOD AND APPARATUS FOR DIRECT DRYING OF INORGANIC SLUDGE WITH DRUM DRAWING PROCESS
Document Type and Number:
WIPO Patent Application WO/2020/063745
Kind Code:
A1
Abstract:
A method and apparatus for direct drying of inorganic sludge with a drum drawing process, comprising the following steps: 1) drum mixed drying of slag and sludge: respectively conveying the slag and sludge into a drum (1) in proportion, completing mixing, heat exchange, dehydration, cooling and crushing of the slag and sludge under the rolling action of the drum (1) and a steel ball to achieve cooling, crushing and drying of the slag and sludge, and directly discharging the obtained mixture; 2) slag and sludge separation: separating the steel slag and dry sludge in a manner of combining screening and rotary separation; 3) tail gas treatment: treating dusts, sulfides and organic compounds in tail gas generated by the dry sludge by using wet alkali washing and activated carbon adsorption, and discharging the treated tail gas; and 4) tailing sludge treatment: generating steam and dusts in the drum treatment of the slag and sludge, allowing dusts to enter a tail gas treatment device (4) with steam, aggregating the dusts after wet washing or spraying, and then conveying into a tailing sludge blending device (5) by means of a conveying device, mixing and stirring the tailing sludge and original sludge, conveying the obtained mixture into the drum (1), and drying the mixture to realize zero discharge of undried sludge.
Inventors:
WANG YINGJIE (CN)
XIAO YONGLI (CN)
LI YONGQIAN (CN)
XIAO YONGLI (CN)
LI YONGQIAN (CN)
Application Number:
PCT/CN2019/108152
Publication Date:
April 02, 2020
Filing Date:
September 26, 2019
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C02F11/18; C02F11/12; F26B3/18
Foreign References:
| CN109293194A | 2019-02-01 | |||
| CN201327265Y | 2009-10-14 | |||
| CN201327265Y | 2009-10-14 | |||
| CN101186422A | 2008-05-28 | |||
| CN101186422A | 2008-05-28 | |||
| JP2011163648A | 2011-08-25 | |||
| KR101729994B1 | 2017-04-25 | |||
| CN105731754A | 2016-07-06 | |||
| CN200510048978A | 2005-01-21 | |||
| CN200510049554A | 2005-04-04 | |||
| CN200510049556A | 2005-04-04 | |||
| CN200410052759A | 2004-07-08 | |||
| CN03155966A | 2003-08-28 |
Other References:
See also references of EP 3858792A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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