Title:
INTEGRATED DRYING PROCESS AND DEVICE FOR DRY GRANULATED SLAG AND SLUDGE
Document Type and Number:
WIPO Patent Application WO/2022/022161
Kind Code:
A1
Abstract:
An integrated drying process and device for dry granulated slag and sludge. The process comprises the following steps: 1) slag ball mixing and soaking: high-temperature slag and steel balls are fully mixed and exchange heat therebetween, the high-temperature slag is cooled because the heat thereof is quickly absorbed by the steel balls and is crushed to form granular slag, and the temperature of the steel balls rises because the steel balls absorb the heat of the high-temperature slag; and 2) sludge drying: the high-temperature steel balls are conveyed to a sludge drying device to be mixed with injected sludge, the sludge is dried, the steel balls are separated from the sludge when the water content of the sludge reaches a set value, and the steel balls and the sludge are separately discharged. In the present invention, high-temperature slag waste heat is used for heating steel balls, and sludge is dried by means of the heated steel balls, thus achieving the cooperative treatment of slag cooling, granulation and sludge drying, solving two difficult problems of slag cooling and sludge drying, and greatly increasing the waste heat recycling rate of high-temperature slag.
Inventors:
XIAO YONGLI (CN)
LI YONGQIAN (CN)
LI YONGQIAN (CN)
Application Number:
PCT/CN2021/101238
Publication Date:
February 03, 2022
Filing Date:
June 21, 2021
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C21B3/08; C02F11/13; F26B3/18
Foreign References:
| CN109811095A | 2019-05-28 | |||
| CN101387472A | 2009-03-18 | |||
| CN101885574A | 2010-11-17 | |||
| CN110330211A | 2019-10-15 | |||
| JP2002273480A | 2002-09-24 |
Other References:
See also references of EP 4190919A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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