Title:
MOLTEN COPPER SLAG DEPLETION AND SIDE-TOP COMBINED BLOWING REDUCTION INTEGRATED METHOD
Document Type and Number:
WIPO Patent Application WO/2022/227179
Kind Code:
A1
Abstract:
The present invention relates to the field of comprehensive utilization of copper slag, and relates to a molten copper slag depletion and side-top combined blowing reduction integrated method. Specific steps are: (1) molten copper slag is added to a depletion smelting zone from a feed port, and an oxygen-enriched fuel is sprayed to heat the copper slag; (2) a depletion agent is added to the molten copper slag from a depletion agent feed port, vortex depletion is performed under the action of vortexes formed by mechanical stirring or gas spray stirring, and copper matte obtained by the depletion is discharged from a copper matte outlet and returned to a main copper smelting process; (3) depletion slag overflows to a reduction zone, then a slagging agent and a reducing agent are added to a depletion slag smelting pool, the oxygen-enriched fuel is sprayed by means of a top spray gun, reduced CO is combusted and molten to heat the smelting pool to maintain thermal balance, and vortex smelting reduction is performed under the action of mechanical stirring or gas spray stirring; and (4) copper-containing molten iron obtained by reduction is discharged from a molten iron outlet, and reduction slag is discharged from a slag outlet. The present invention provides a new idea of a molten copper slag depletion and side-top combined blowing reduction integrated method, can implement the efficient recovery of valuable components, i.e., copper and iron, in copper slag, high-value slag-free 100% utilization, and implements the synergistic utilization of copper slag waste heat.
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Inventors:
ZHANG TINGAN (CN)
DOU ZHIHE (CN)
LV GUOZHI (CN)
GUO JUNHUA (CN)
LIU YAN (CN)
ZHANG ZIMU (CN)
HE JICHENG (CN)
DOU ZHIHE (CN)
LV GUOZHI (CN)
GUO JUNHUA (CN)
LIU YAN (CN)
ZHANG ZIMU (CN)
HE JICHENG (CN)
Application Number:
PCT/CN2021/096790
Publication Date:
November 03, 2022
Filing Date:
May 28, 2021
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
DONGDA NONFERROUS SOLID WASTE TECH RESEARCH INSTITUTE LIAOLING CO LTD (CN)
DONGDA NONFERROUS SOLID WASTE TECH RESEARCH INSTITUTE LIAOLING CO LTD (CN)
International Classes:
C22B7/04; C21B13/00; C22B5/10; C22B15/00
Foreign References:
| CN110004352A | 2019-07-12 | |||
| CN101705360A | 2010-05-12 | |||
| CN110106433A | 2019-08-09 | |||
| CN107699711A | 2018-02-16 | |||
| CN103952571A | 2014-07-30 |
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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