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Method for improving ceramization performance of high-thiocyanate tailings
The invention discloses a method for improving ceramization performance of high-thiocyanation tailings, and belongs to the technical field of safe disposal of hazardous wastes. According to the method disclosed by the invention, the specific characteristics of uniform and efficient mass transfer and heat transfer of the suspension roasting oxidation furnace are utilized, the use and roasting temperature requirements of a sulfur fixation material are reduced, the generation of SO2 gas and the problems of black core and bulge of the sintered tile caused by the SO2 gas are reduced, the total cyanide content in the obtained roasted product is less than or equal to 0.02 mg/kg, the cyanide removal rate is greater than 99%, the sulfur fixation rate is greater than 97%, and the sulfur fixation rate is greater than 99%. The heavy metal curing rate is greater than 99%, and each index meets the product quality requirements of GB/T21149-2019 Sintered Tile. Meanwhile, cyanides in the cyanidation tailings are removed, heavy metal is solidified, and the relevant requirements of cyanidation tailings utilization and pollution control in the HJ943-2018 technical specification for cyanide residue pollution control in the gold industry are met.
一种提高高硫氰化尾渣陶瓷化性能的方法，属于危险废物安全处置技术领域。本发明利用悬浮焙烧氧化炉特有的传质和传热均匀高效的特点，降低了固硫物料的使用和焙烧温度需求，减少了SO2气体产生及其造成的烧结瓦黑心和鼓包的问题，获得的焙烧制品中总氰化物含量≤0.02mg/kg，氰化物去除率＞99％，固硫率＞97％，重金属固化率＞99％，各项指标达到了GB/T21149‑2019《烧结瓦》的产品质量要求。同时脱除了氰化尾渣中氰化物，固化了重金属，满足《HJ943‑2018黄金行业氰渣污染控制技术规范》中氰化尾渣利用污染控制的相关要求。
Method for improving ceramization performance of high-thiocyanate tailings
The invention discloses a method for improving ceramization performance of high-thiocyanation tailings, and belongs to the technical field of safe disposal of hazardous wastes. According to the method disclosed by the invention, the specific characteristics of uniform and efficient mass transfer and heat transfer of the suspension roasting oxidation furnace are utilized, the use and roasting temperature requirements of a sulfur fixation material are reduced, the generation of SO2 gas and the problems of black core and bulge of the sintered tile caused by the SO2 gas are reduced, the total cyanide content in the obtained roasted product is less than or equal to 0.02 mg/kg, the cyanide removal rate is greater than 99%, the sulfur fixation rate is greater than 97%, and the sulfur fixation rate is greater than 99%. The heavy metal curing rate is greater than 99%, and each index meets the product quality requirements of GB/T21149-2019 Sintered Tile. Meanwhile, cyanides in the cyanidation tailings are removed, heavy metal is solidified, and the relevant requirements of cyanidation tailings utilization and pollution control in the HJ943-2018 technical specification for cyanide residue pollution control in the gold industry are met.
一种提高高硫氰化尾渣陶瓷化性能的方法，属于危险废物安全处置技术领域。本发明利用悬浮焙烧氧化炉特有的传质和传热均匀高效的特点，降低了固硫物料的使用和焙烧温度需求，减少了SO2气体产生及其造成的烧结瓦黑心和鼓包的问题，获得的焙烧制品中总氰化物含量≤0.02mg/kg，氰化物去除率＞99％，固硫率＞97％，重金属固化率＞99％，各项指标达到了GB/T21149‑2019《烧结瓦》的产品质量要求。同时脱除了氰化尾渣中氰化物，固化了重金属，满足《HJ943‑2018黄金行业氰渣污染控制技术规范》中氰化尾渣利用污染控制的相关要求。
Method for improving ceramization performance of high-thiocyanate tailings
一种提高高硫氰化尾渣陶瓷化性能的方法
ZHANG YUHAI (author) / ZHANG FAN (author) / ZHANG JIANTING (author) / DONG MANGUI (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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