Electric stove metal bulk cargo continuous feeding and preheating device and method

Abstract

The invention belongs to the metallurgy technical field and discloses an electric stove metal bulk cargo continuous feeding and preheating device and method. The metal charge roller preheating grooveof the device is inclined with the horizontal plane, the lower end of the metal charge roller preheating groove is inserted into the inlet of a stove entering vibratory conveyor to be sheathed in short distance fit, the stove entering vibratory conveyor is connected with open pore A of the electric stove, the position of approach end is lower, the higher end of the metal charge roller preheating groove is sheathed and combined with a groove entering vibratory conveying and air sealing device, and the two are sheathed in short distance fit. The method is characterized in that metal charge is fed into the metal charge roller preheating groove to be preheated. The preheated metal charge is fed into the electric stove, and smoke of the electric stove is exhausted by the stove entering vibratory conveyor, the metal charge preheating groove and the groove entering vibratory conveying and air sealing device. The invention has the advantages of less electrical energy consumption, steady operation, high scrap preheating efficiency, high operational throughput and short total device length and is a new energy-saving and environmentally friendly technology with promotional value on electric stove or other production technologies.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and discloses a device and method for continuously feeding and preheating metal bulk materials in an electric furnace. Background technique [0002] Electric furnace steelmaking is an important steelmaking method that melts scrap metal by an electric arc, which consumes a lot of electrical energy during the smelting process. The continuous feeding and preheating technology of electric furnace scrap steel is an important sub-item technology of electric furnace steelmaking. It can save a lot of electric energy, reduce the temperature of flue gas and the emission of dust in it, and can stabilize the electric arc smelting of electric furnace and reduce the noise of electric furnace. It is a new technology of energy saving and environmental protection. At present, the popular foreign technologies in the world are mainly COSS technology developed based on shaft furnace technology and CONSTEEL techno...

AI Technical Summary

Problems solved by technology

At present, the popular foreign technologies in the world are mainly COSS technology developed based on shaft furnace technology and CONSTEEL technology of vibrating continuous feeding. COSS technology has good technical indicators, but based on the development of electric furnace shaft furnace, the height of electric furnace equipment is increased, and the plant Heightening, the feeding method is intermittent feeding, and there are also environmental protection problems such as dioxins, so its promotion and use tends to stagnate

The CONSTEEL technology based on vibration continuous feeding is a horizontal continuous feeding technology, which can realize stable arc smelting in electric furnaces, is environmentally friendly and reduces electrode consumption, and can greatly reduce the production process costs of electric furnaces. However, in this method, only the upper layer of scrap steel is heated , so the preheating effect of scrap steel is not good, and because the vibration feeding has a large number of moving parts and the high temperature of the flue gas, the equipment maintenance of this system is relatively large, and the mechanical reliability is relatively low

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