Manufacturing method for preparing fluxed pellets by using hematite and rolled steel sheet
The invention belongs to the technical field of metallurgy, and particularly relates to a manufacturing method for preparing fluxed pellets from hematite and rolled steel sheets. Comprising the following steps: 1) grinding hematite and rolled steel sheet into hematite powder and rolled steel sheet p...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to the technical field of metallurgy, and particularly relates to a manufacturing method for preparing fluxed pellets from hematite and rolled steel sheets. Comprising the following steps: 1) grinding hematite and rolled steel sheet into hematite powder and rolled steel sheet powder; (2) hematite powder, rolled steel sheet powder, an additive and a binder are evenly mixed, a mixture is obtained, and the additive is carbide slag and sodium humate; (3) wetting the mixture through steam; (4) pressing the wetted mixture into balls; and (5) the pressed pellets are put into a microwave heating device to be subjected to microwave preheating treatment, then roasting is conducted, and finished pellets are obtained. According to the invention, two wastes, namely the rolled steel sheet and the carbide slag, are used as raw materials for producing the fluxed pellets, so that the problem of waste treatment of steel plants is fundamentally solved, the environmental protection pressure is reduced, and |
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