Method and device for automatic loading of roasting alloys in silicon steel production

Abstract

The invention provides a method and a device for automatic loading of roasting alloys in silicon steel production. The device comprises a delivery device, a roasting device, a gathering device and an electric control system, wherein the electric control system is connected with the delivery device, the roasting device and the gathering device respectively, the roasting device comprises a plurality of parallel alloy roasting devices which are arranged in a row, a pair of guide rails are arranged in a parallel mode at upper and lower positions along the arrangement direction of alloy roasting devices, an upper weighing trolley which can slide is installed on the upper guide rail and can move to a position of a charging port, the lower guide rail extends out of the alloy roasting device area, a lower weighing trolley which can slide is installed on the lower guide rail, the gathering device comprises an alloy gathering hopper which is arranged below the extension position of the lower guide rail. The method adopts the device to conduct automatic loading of roasting alloys. By the aid of the device and the method, a large amount of iron alloys to be roasted are supplied to a revolving furnace quantitatively at the fixed time, the automation degree is high, and a large amount of alloys can be added in one time.

Description

technical field [0001] The invention belongs to the technical field of the metallurgical industry, and in particular relates to a fully automatic control method and device for automatically feeding baking alloys when a large-scale converter smelts silicon steel. Background technique [0002] Silicon steel is a ferrosilicon alloy with a silicon content of about 3% to 5%, and is an indispensable and important soft magnetic alloy for electric power, electronics and military industries. The production process of silicon steel is complicated, and the manufacturing technology is strict. The production technology at home and abroad pays more attention to technical confidentiality, which is regarded as the life of the enterprise. [0003] Compared with ordinary steel types, a large amount of baked ferroalloy needs to be added to the molten steel during the smelting and production of silicon steel. Alloy baking can solve the following problems: (1) After a large amount of alloy is d...

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Problems solved by technology

Alloy baking can solve the following problems: (1) After a large amount of alloy is damp, it is easy to add H to the molten steel, and the billet forms "white spots", which makes the steel brittle; (2) After the alloy is added to the ladle, it absorbs a lot of heat, and the converter is Forced to increase the tapping temperature, which not only deteriorates the quality of molten steel, but also reduces the life of the converter, causing many adverse effects on the production organization; (3) Low-temperature silicon is easy to oxidize, resulting in excessive burning of silicon and reducing the yield of silicon

[0006] This process method has the following disadvantages: (1) The material can be loaded by the material tank, and the amount of alloy added to the baking furnace cannot be precisely controlled

(2) The level of mechanization and automation is low, and the artificial working environment is poor

(3) Manual operation is not easy to accurately control the time point of alloy addition, and cannot match the production rhythm well

(4) It is only suitable for smelting silicon steel with small-scale converters. If large-scale converters are used to smelt silicon steel, the amount of baked alloy added to the converter will increase. If forklifts are still used to transport the baked alloys, the number of forklifts will increase and the operation will be more disturbed. , cannot meet the requirements of alloy transportation, it is necessary to develop a device that can add a large amount of alloy at one time to meet the requirements of large-scale converter baking alloy feeding

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