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Melting coupling modification iron extraction method for converter slag and nickel slag and/or copper slag
The invention discloses a melting coupling modification iron extraction method for converter slag and nickel slag and/or copper slag. The melting coupling modification iron extraction method comprisesthe following steps that molten converter slag with the slag temperature of more than or equal to 1450 DEG C is discharged into a slag tank, and nickel slag and/or copper slag and aluminum ash are added into the slag tank while the molten converter slag is in a stirring state to obtain molten mixed slag; the molten mixed slag is continuously stirred, so that the nickel slag and/or the copper slagand the aluminum ash are/is completely mixed with the molten converter slag in the slag tank to finish melting coupling modification and reduction reaction, and final molten slag containing a large number of metal iron drops is obtained; and stirring is stopped, the final slag in the slag tank is naturally cooled to room temperature, metal iron lump settled at the bottom of the slag tank is takenout, and metal iron in tailings is recovered through magnetic separation. According to the method, complex iron minerals in the converter slag and the nickel slag and/or the copper slag are dissociated into simple iron oxide at the same time under the condition of not additionally supplementing heat, so that joint extraction and recovery of iron resources in the multi-source metallurgical slag are promoted.
本发明公开了一种转炉渣与镍渣和/或铜渣的熔融耦合改质提铁方法，将渣温≥1450℃的熔融转炉渣排入到渣罐中，并在熔融转炉渣处于搅拌状态下，向渣罐中加入镍渣和/或铜渣和铝灰，获得熔混渣；对熔混渣进行持续搅拌，使镍渣和/或铜渣和铝灰与渣罐中的熔融转炉渣在充分混合的状态下，完成熔融耦合改质和还原反应，获得含有大量金属铁滴的最终熔渣；停止搅拌，使渣罐中的最终熔渣自然冷却至室温后，取出沉降于渣罐底部的金属铁坨，同时通过磁选回收尾渣中的金属铁。本发明提供的方法实现了在无需额外补充热量的条件下，转炉渣和镍渣和/或铜渣中复杂铁矿物同时解离为简单铁氧化物，进而促进多源冶金渣中铁资源的共同提取与回收。
Melting coupling modification iron extraction method for converter slag and nickel slag and/or copper slag
The invention discloses a melting coupling modification iron extraction method for converter slag and nickel slag and/or copper slag. The melting coupling modification iron extraction method comprisesthe following steps that molten converter slag with the slag temperature of more than or equal to 1450 DEG C is discharged into a slag tank, and nickel slag and/or copper slag and aluminum ash are added into the slag tank while the molten converter slag is in a stirring state to obtain molten mixed slag; the molten mixed slag is continuously stirred, so that the nickel slag and/or the copper slagand the aluminum ash are/is completely mixed with the molten converter slag in the slag tank to finish melting coupling modification and reduction reaction, and final molten slag containing a large number of metal iron drops is obtained; and stirring is stopped, the final slag in the slag tank is naturally cooled to room temperature, metal iron lump settled at the bottom of the slag tank is takenout, and metal iron in tailings is recovered through magnetic separation. According to the method, complex iron minerals in the converter slag and the nickel slag and/or the copper slag are dissociated into simple iron oxide at the same time under the condition of not additionally supplementing heat, so that joint extraction and recovery of iron resources in the multi-source metallurgical slag are promoted.
本发明公开了一种转炉渣与镍渣和/或铜渣的熔融耦合改质提铁方法，将渣温≥1450℃的熔融转炉渣排入到渣罐中，并在熔融转炉渣处于搅拌状态下，向渣罐中加入镍渣和/或铜渣和铝灰，获得熔混渣；对熔混渣进行持续搅拌，使镍渣和/或铜渣和铝灰与渣罐中的熔融转炉渣在充分混合的状态下，完成熔融耦合改质和还原反应，获得含有大量金属铁滴的最终熔渣；停止搅拌，使渣罐中的最终熔渣自然冷却至室温后，取出沉降于渣罐底部的金属铁坨，同时通过磁选回收尾渣中的金属铁。本发明提供的方法实现了在无需额外补充热量的条件下，转炉渣和镍渣和/或铜渣中复杂铁矿物同时解离为简单铁氧化物，进而促进多源冶金渣中铁资源的共同提取与回收。
Melting coupling modification iron extraction method for converter slag and nickel slag and/or copper slag
一种转炉渣与镍渣和/或铜渣的熔融耦合改质提铁方法
WANG NAN (author) / CHEN MIN (author) / LI XIAO'AO (author) / XIN JIANJIANG (author) / ZHANG CHUNMING (author) / CAO BOWEN (author)
2021-02-19
Patent
Electronic Resource
Chinese
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