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Method for resource utilization of all components of smelting slag
The invention discloses a smelting slag all-component resource utilization method which comprises the following steps: leaching smelting slag by using an ammonium salt solution with the NH4 < + > concentration of less than or equal to 5mol/L to obtain a calcium-magnesium leaching solution and leaching slag; and leached residues are subjected to flotation or magnetic separation to separate iron-containing components and silicon-containing components. According to the method, based on the occurrence morphological characteristics of components such as calcium, magnesium, iron and silicon in the smelting slag, the processes of carbon sequestration component efficient leaching, CO2 mineralization and valuable component separation are coupled, low-carbon and low-consumption all-component resource utilization of the smelting slag is achieved, and the pace of carbon emission reduction and resource recycling in the metallurgical industry is greatly promoted.
本发明公开了一种冶炼渣全组分资源化利用的方法，该方法以NH4+浓度≤5mol/L的铵盐溶液对冶炼渣进行浸出，得到钙镁浸出液和浸出渣；浸出渣经浮选或磁选分离含铁组分和含硅组分。该方法基于冶炼渣中钙、镁、铁、硅等组分的赋存形态特征，耦合固碳组分高效浸出、CO2矿化及有价组分分离工艺，实现了冶炼渣低碳低耗全组分资源化利用，极大地推动了冶金工业碳减排和资源循环利用的步伐。
Method for resource utilization of all components of smelting slag
The invention discloses a smelting slag all-component resource utilization method which comprises the following steps: leaching smelting slag by using an ammonium salt solution with the NH4 < + > concentration of less than or equal to 5mol/L to obtain a calcium-magnesium leaching solution and leaching slag; and leached residues are subjected to flotation or magnetic separation to separate iron-containing components and silicon-containing components. According to the method, based on the occurrence morphological characteristics of components such as calcium, magnesium, iron and silicon in the smelting slag, the processes of carbon sequestration component efficient leaching, CO2 mineralization and valuable component separation are coupled, low-carbon and low-consumption all-component resource utilization of the smelting slag is achieved, and the pace of carbon emission reduction and resource recycling in the metallurgical industry is greatly promoted.
本发明公开了一种冶炼渣全组分资源化利用的方法，该方法以NH4+浓度≤5mol/L的铵盐溶液对冶炼渣进行浸出，得到钙镁浸出液和浸出渣；浸出渣经浮选或磁选分离含铁组分和含硅组分。该方法基于冶炼渣中钙、镁、铁、硅等组分的赋存形态特征，耦合固碳组分高效浸出、CO2矿化及有价组分分离工艺，实现了冶炼渣低碳低耗全组分资源化利用，极大地推动了冶金工业碳减排和资源循环利用的步伐。
Method for resource utilization of all components of smelting slag
一种冶炼渣全组分资源化利用的方法
SUN ZENGQING (author) / FAN XIAOHUI (author) / LI XIAOYU (author) / LIU HUIYANG (author) / GAN MIN (author) / JI ZHIYUN (author) / HUANG XIAOXIAN (author) / CHEN XULING (author) / FENG ZHENXIANG (author)
2024-11-22
Patent
Electronic Resource
Chinese
Comprehensive resource utilization formula and process for metal smelting slag
| European Patent Office | 2020