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Clean Treatment of Pyrolysis for Sulfur-Containing Cyanidation Tails
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Tengyue GAO1, 2, Guangsheng LI1, 2, Xingfu ZHU1, 2, Qiang JI1
Mining and Metallurgical Engineering | 2023, 43(2) : 102 - 104
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Mining and Metallurgical Engineering | 2023, 43(2): 102-104
• METALLURGY •
Clean Treatment of Pyrolysis for Sulfur-Containing Cyanidation Tails
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Tengyue GAO1, 2, Guangsheng LI1, 2, Xingfu ZHU1, 2, Qiang JI1
Affiliations
  • 1.Metallurgical Laboratory Branch of Shandong Gold Mining Technology Co Ltd, Yantai 261400, Shandong, China
  • 2.Shandong Gold Mining Technology Co Ltd, Jinan 250100, Shandong, China
Published: 2023-04-01 doi: 10.3969/j.issn.0253-6099.2023.02.023
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The sulfur-containing cyanide leaching tails were taken for experimental research by using pyrolysis process in a rotary kiln for degradation to remove cyanide as well as sulfur fixation. The influence of temperature, atmosphere, shielding gas flow rate, and the time of constant temperature for pyrolysis process on the degradation effect were all investigated. After experiment, soil testing was performed to detest the toxicity of the leaching tails for determine the effect of the clean treatment. It is found that under the atmosphere of 95%N2, after 2 hours pyrolysis at a constant temperature with the highest temperature at 500 ℃, the total cyanide content in the tails detected by soil testing is less than 0.04 mg/kg, showing the content of total cyanide, copper, lead and zinc after cyanide leaching all can meet the relevant requirements for class I general solid waste in GB 18599-2020. The sulfur fixation rate in the left slag is approaching 100% after pyrolysis, and there is no large amount of SO2 in the flue gas during pyrolysis. It is concluded that clean treatment of cyanidation tails can be actualized by using this low-temperature pyrolysis process.

low temperature pyrolysis  /  cyanide tails  /  clean treatment  /  cyanide removal  /  sulfur fixation
Tengyue GAO, Guangsheng LI, Xingfu ZHU, Qiang JI. Clean Treatment of Pyrolysis for Sulfur-Containing Cyanidation Tails[J]. Mining and Metallurgical Engineering, 2023 , 43 (2) : 102 -104 . DOI: 10.3969/j.issn.0253-6099.2023.02.023
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Year 2023 volume 43 Issue 2
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.02.023
  • Receive Date：2022-11-08
  • Online Date：2026-03-05
  • Published：2023-04-01
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  • Received：2022-11-08
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Affiliations
    1.Metallurgical Laboratory Branch of Shandong Gold Mining Technology Co Ltd, Yantai 261400, Shandong, China
    2.Shandong Gold Mining Technology Co Ltd, Jinan 250100, Shandong, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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