Method for recovering iron, copper and manganese by coreduction of copper smelting slag and ferrous manganese ore
A technology for copper smelting slag and ferromanganese ore, which is applied in the field of industrial waste slag resource utilization, can solve the problems of large environmental pollution in coking process and iron utilization rate of less than 1%, and achieves improvement of slag fluidity, improvement of reduction kinetic conditions, The effect of promoting diffusion
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Embodiment 1
[0058] Copper slag is processed through ball milling and high-pressure roller milling until more than 85% of the particles have a particle size of less than 0.074mm and a specific surface area of 1630cm 2 / g; Iron-manganese ore is processed through ball milling and high-pressure roller milling until more than 80% of the particles have a particle size of less than 0.074mm and a specific surface area of 1530cm 2 / g; mix copper slag and ferromanganese ore according to 4:6, and add 15% additives (limestone 70wt% + sodium humate 30wt%), use a disc pelletizer to pelletize the mixture, and control the pelletizing moisture to 7.5% , the pelletizing time was 13 minutes, the drop strength of the obtained green pellets was 5.3 times / 0.5m, the compressive strength of the pellets was 11.4N / piece, and the bursting temperature of the pellets was 315°C; After drying at 300°C for 6 minutes and preheating at 1100°C for 14 minutes, the compressive strength of the preheated pellets is 750N / pi...
Embodiment 2
[0061] Copper slag is processed through ball milling and high-pressure roller milling until more than 85% of the particles have a particle size of less than 0.074mm and a specific surface area of 1630cm 2 / g; Iron-manganese ore is processed through ball milling and high-pressure roller milling until more than 80% of the particles have a particle size of less than 0.074mm and a specific surface area of 1530cm 2 / g; mix copper slag and ferromanganese ore according to 5:5, and add 15% additives (limestone 70wt% + sodium humate 30wt%), use a disc pelletizer to pelletize the mixture, and control the pelletizing moisture to 7.5% , the pelletizing time was 12min, the drop strength of the obtained green pellets was 5.5 times / 0.5m, the compressive strength of the green pellets was 11.9N / piece, and the bursting temperature of the green pellets was 355°C; After drying at 350°C for 5 minutes and preheating at 1100°C for 13 minutes, the compressive strength of the preheated pellets is ...
Embodiment 3
[0066] Copper slag is processed through ball milling and high-pressure roller milling until more than 85% of the particles have a particle size of less than 0.074mm and a specific surface area of 1630cm 2 / g; Iron-manganese ore is processed through ball milling and high-pressure roller milling until more than 80% of the particles have a particle size of less than 0.074mm and a specific surface area of 1530cm 2 / g; mix copper slag and ferromanganese ore according to 5:5, and add 25% additives (limestone 80wt% + sodium humate 20wt%), use a disc pelletizer to pelletize the mixture, and control the pelleting moisture to 7.5% , the pelletizing time was 14 minutes, the drop strength of the obtained green pellets was 5.8 times / 0.5m, the compressive strength of the green pellets was 12.7N / piece, and the bursting temperature of the green pellets was 375°C; After drying at 350°C for 6 minutes and preheating at 1100°C for 15 minutes, the compressive strength of the preheated pellets ...
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