Comprehensive recycling process of chemical byproduct iron sludge
A technology of by-product iron and chemical industry, which is applied in the field of comprehensive recycling process of chemical by-product iron slime, can solve the problems of difficult recycling of chemical by-product iron slime and high cost of natural iron ore, so as to improve the overall economic benefit and practicality Strong performance and cost reduction effect
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Embodiment 1
[0036] 1) 1 kg of the above-mentioned iron slime raw material is washed once to remove the organic substances contained therein to obtain washed tailings and washed coarse concentrate, and the obtained washed coarse concentrate iron-containing solid product TFe content is 62.75%.
[0037] 2) Perform weak magnetic separation I on the washed coarse concentrate obtained by water washing in step 1) to obtain magnetic separation concentrate A and the first magnetic separation tailings; the magnetic field strength of the weak magnetic separation magnetic separator is 100 KA / m. The first magnetic separation tailings were reduced and roasted for 90 minutes at 800 ° C and the ratio of mine to coal was 10, and the products obtained from roasting were ground. Conduct weak magnetic separation II to obtain magnetic separation concentrate B and second magnetic separation tailings.
[0038]3) Combine the magnetic separation concentrate B obtained from the weak magnetic separation II in the s...
Embodiment 2
[0040] 1) 1kg of the above-mentioned iron sludge raw material is washed twice to remove the organic substances contained therein to obtain washed tailings and washed coarse concentrate, and the obtained washed coarse concentrate iron-containing solid product TFe content is 63.52%.
[0041] 2) Perform weak magnetic separation I on the washed coarse concentrate obtained from the water washing in step 1) to obtain magnetic separation concentrate A and the first magnetic separation tailings; the magnetic field strength of the weak magnetic separation magnetic separator is 80 KA / m. The first magnetic separation tailings were reduced and roasted for 110 minutes at 850°C and the ratio of mine to coal was 11. The products obtained from roasting were ground. The particle size of the ground products was -0.074mm, accounting for 88.6%. Conduct weak magnetic separation II to obtain magnetic separation concentrate B and second magnetic separation tailings.
[0042] 3) Combine the magnetic ...
Embodiment 3
[0044] 1) 1kg of the above-mentioned iron sludge raw material is washed twice to remove the organic substances contained therein to obtain washed tailings and washed coarse concentrate, and the obtained washed coarse concentrate iron-containing solid product TFe content is 63.52%.
[0045] 2) Perform weak magnetic separation I on the washed coarse concentrate obtained from the water washing in step 1) to obtain magnetic separation concentrate A and the first magnetic separation tailings; the magnetic field strength of the weak magnetic separation magnetic separator is 120 KA / m. The first magnetic separation tailings were reduced and roasted for 110 minutes at 900°C and the ratio of mine to coal was 10. The products obtained from roasting were ground. The particle size of the ground products was -0.074mm, accounting for 86.3%. Conduct weak magnetic separation II to obtain magnetic separation concentrate B and second magnetic separation tailings.
[0046] 3) Combine the magnetic...
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