Title:
HARMLESS DISPOSAL METHOD FOR CYANIDATION TAILING
Document Type and Number:
WIPO Patent Application WO/2019/210533
Kind Code:
A1
Abstract:
A harmless disposal method for a cyanidation tailing, performed according to the following steps: (1) preparing the cyanidation tailing as a raw material, or adding an additive CaO to the cyanidation tailing as a mixed raw material; (2) heating the raw material or the mixed raw material to 250-450°C for pyrolysis and carrying out thermal insulation for less than or equal to 90 min so as to obtain calcine; and (3) directly using the calcine for backfill treatment, or extracting pyrite by means of flotation. The method has a good cyanogen removal effect, and the cyanidation tailing after undergoing low-temperature pyrolysis meets requirements of common solid wastes.
Inventors:
XIE FENG (CN)
DONG KAI WEI (CN)
CHANG YONG FENG (CN)
LU DIAN KUN (CN)
WANG WEI (CN)
WANG JIAN (CN)
FU YAN (CN)
DONG KAI WEI (CN)
CHANG YONG FENG (CN)
LU DIAN KUN (CN)
WANG WEI (CN)
WANG JIAN (CN)
FU YAN (CN)
Application Number:
PCT/CN2018/087138
Publication Date:
November 07, 2019
Filing Date:
May 16, 2018
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
B09B3/00
Foreign References:
| CN106269289A | 2017-01-04 | |||
| CN104475269A | 2015-04-01 | |||
| CN104561528A | 2015-04-29 | |||
| CN102784722A | 2012-11-21 | |||
| US4710361A | 1987-12-01 | |||
| CN101864520A | 2010-10-20 |
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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