Method for efficiently recovering dust sludge containing C and Fe in iron and steel industry
A technology of iron and steel industry, dust and mud, applied in the direction of petroleum industry, recycling technology, chemical instruments and methods, etc., can solve the problems of low recycling rate and waste, and achieve the effect of efficient recycling, complete combustion and high yield
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Embodiment 1
[0037] A method for efficiently reclaiming iron and steel industry dust sludge containing C and Fe, the method is to carry out magnetic separation after screening and crushing the dust sludge containing C, Fe, Ca, Si and other impurities in the iron and steel industry to obtain Ca, Si powder and Fe-containing materials, Fe-containing materials are returned to the steelmaking plant for use, C, Ca, Si powders are continuously flotation, and high-C materials are obtained by flotation. After the high-C materials are air-dried, turpentine is added for cementation , and then pressed into a spherical or rod shape, and after air-drying, the lipid coke used as a reducing agent and fuel in the smelting industry can be obtained. The method includes the following specific steps:
[0038] A. Screening:
[0039] The dust sludge containing C, Fe, Ca, Si and other impurities in the iron and steel plant is screened by a vibrating screen. In the dust sludge containing C, Fe, Ca, Si and other im...
Embodiment 2
[0055] A method for efficiently reclaiming iron and steel industry dust sludge containing C and Fe, the method is to carry out magnetic separation after screening and crushing the dust sludge containing C, Fe, Ca, Si and other impurities in the iron and steel industry to obtain Ca, Si powder and Fe-containing materials, Fe-containing materials are returned to the steelmaking plant for use, C, Ca, Si powders are continuously flotation, and high-C materials are obtained by flotation. After the high-C materials are air-dried, turpentine is added for cementation , and then pressed into a spherical or rod shape, and after air-drying, the lipid coke used as a reducing agent and fuel in the smelting industry can be obtained. The method includes the following specific steps:
[0056] A. Screening:
[0057] The dust sludge containing C, Fe, Ca, Si and other impurities in the iron and steel plant is screened by a vibrating screen. In the dust sludge containing C, Fe, Ca, Si and other impu...
Embodiment 3
[0073] A method for efficiently reclaiming iron and steel industry dust sludge containing C and Fe, the method is to carry out magnetic separation after screening and crushing the dust sludge containing C, Fe, Ca, Si and other impurities in the iron and steel industry to obtain Ca, Si powder and Fe-containing materials, Fe-containing materials are returned to the steelmaking plant for use, C, Ca, Si powders are continuously flotation, and high-C materials are obtained by flotation. After the high-C materials are air-dried, turpentine is added for cementation , and then pressed into a spherical or rod shape, and after air-drying, the lipid coke used as a reducing agent and fuel in the smelting industry can be obtained. The method includes the following specific steps:
[0074] A. Screening:
[0075] The dust sludge containing C, Fe, Ca, Si and other impurities in the iron and steel plant is screened by a vibrating screen. In the dust sludge containing C, Fe, Ca, Si and other im...
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