Continuous ore reduction and hot delivery steelmaking device

Abstract

The invention belongs to the technical field of metallurgy and in particular relates to a continuous ore reduction and hot-charging steelmaking device. The device comprises a vibration type cyclone reduction furnace, an ore powder ball forming preheating device arranged on one side of the cyclone reduction furnace, an electrical furnace smelting separation device and a fuel injection device which are arranged at one end of the vibration type cyclone reduction furnace, a dust removal device connected to the ore powder ball forming preheating device, a water cooling device connected to the vibration type cyclone reduction furnace, the ore powder ball forming preheating device and the electrical furnace smelting separation device, and an electrical control device used for controlling the parts. According to the device, the ironmaking and steelmaking processes are integrated, and high-quality molten steel with low harmful element content is directly produced from ores; the device is suitable for producing excellent special steel, the steelmaking process is carried out by the 100% ores without waste steel, a system is good in sealing property, coal gas and dust leak are avoided, and the surrounding environment is effectively protected.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular to a device for continuous reduction of ore and hot delivery for steelmaking. Background technique [0002] With the massive mining of high-grade iron ore and coking coal, resources will become increasingly scarce; some regions of my country and some countries in the world lack high-grade iron ore coking coal. Therefore, the use of low-cost, low-grade iron ore and non-coking coal is an urgent problem to be solved in ironmaking and steelmaking. The existing ironmaking mainly includes: direct reduced iron, smelting reduced iron and blast furnace ironmaking. DRI products need to be cooled, crushed, and magnetically separated before they can be used as raw materials for steelmaking. They cannot be hot loaded into the furnace, which wastes a lot of energy. The rotary kiln is the representative of DRI production, and the temperature control in the furnace is relatively strict. Rotary...

AI Technical Summary

Problems solved by technology

DRI products need to be cooled, crushed, and magnetically separated before they can be used as raw materials for steelmaking. They cannot be hot loaded into the furnace, which wastes a lot of energy. The rotary kiln is the representative of DRI production, and the temperature control in the furnace is relatively strict. Rotary kiln formation and corrosion of furnace lining by low-melting ferrosilicate restrict the popularization and application of this method, while the tunnel kiln method has a long production cycle and low efficiency and cannot match steelmaking

Smelting reduced iron and blast furnace ironmaking have high requirements on raw materials, and the molten iron produced is added to the steelmaking furnace through the ladle, so it is not suitable to use low-grade iron ore and non-coking coal

Images