Title:
COPPER SMELTING-THERMAL STATE VORTEX DEPLETION INTEGRATED METHOD
Document Type and Number:
WIPO Patent Application WO/2022/227180
Kind Code:
A1
Abstract:
A copper smelting-thermal state vortex depletion integrated method, belonging to the field of copper concentrate smelting. The method comprises: dehydrating and drying a copper smelting raw material by means of a high-temperature flue gas, and then making the copper smelting raw material continuously fall into a molten pool of a smelting area; at the same time, blowing oxygen-enriched air to a slag layer or a slag-copper matte interface position of the smelting area by means of spraying, smelting same for 0.5-1.5 h at 1150-1250ºC, and generating lower-layer copper matte and upper-layer molten copper slag; making the upper-layer molten copper slag overflow to a depletion area, and making the lower-layer copper matte flow into a copper matte area of the depletion area; and heating the molten copper slag to 1250-1350ºC, adding a depleting agent and a slag former thereto, stirring same to form a stable vortex, and carrying out vortex depletion for 0.5-2 h to obtain depleted slag and copper matte, such that the copper matte is discharged and used as a raw material for copper smelting to smelt copper, and the depleted slag can be directly subjected to reduction and iron extraction comprehensive utilization after being discharged. By means of the method, the copper content in the depleted slag can be reduced to 0.25% or less, and the recovery rate of copper is increased.
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Inventors:
ZHANG TINGAN (CN)
DOU ZHIHE (CN)
LV GUOZHI (CN)
LI XIAOLONG (CN)
LIU YAN (CN)
ZHANG ZIMU (CN)
HE JICHENG (CN)
DOU ZHIHE (CN)
LV GUOZHI (CN)
LI XIAOLONG (CN)
LIU YAN (CN)
ZHANG ZIMU (CN)
HE JICHENG (CN)
Application Number:
PCT/CN2021/096794
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:
C22B15/00; C22B4/04
Foreign References:
| CN107699711A | 2018-02-16 | |||
| CN105671325A | 2016-06-15 | |||
| CN107488791A | 2017-12-19 | |||
| CN105671326A | 2016-06-15 | |||
| CN201867056U | 2011-06-15 | |||
| CN110106433A | 2019-08-09 | |||
| CN111101001A | 2020-05-05 | |||
| KR101821253B1 | 2018-01-23 |
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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