SU1191474A1 - Device for heating ferroalloys - Google Patents

Abstract

A device for heating ferroalloys containing a heating chamber with burners, a bunker, a loading mechanism, a smoke exhaust duct and a fuel supply regulator, characterized in that, in order to simplify the design, improve the conditions for the removal of combustion products, the heating chamber and the bunker are made in the form of a single lining the tank, in the lower part of which a sloping partition-visor is installed, and the Dmotravat tract is located under the partition-visor. (L

Description

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The invention relates to ferrous metallurgy, in particular to steelmaking, and can be used in heating deoxidizers and alloying materials before putting them into the casting ladle.

The aim of the invention is to simplify the design, improve the conditions for removal of combustion products.

g. The drawing shows the proposed device, a vertical section ..

The device and servicing mechanisms include heating chamber 1, bunker-2, burners 3., loading mechanism 4, refractory lining 5, partition-visor 6, feeder 7, materials free riodo 8, pipe 9 for exhaust gases, self-unloading container 10, weights platform 11, lifting mechanism 12; control throttle valve 13, temperature sensor 14, fuel supply pipelines 15.

The device works as follows .:

Ferroalloys delivered to the steelmaking, such as a converter shop, in self-loading containers 10, d) by a narrow-lifting mechanism 12 are fed to a loading mechanism 4, which, under the weight of the container 10 and materials, opens and allows the material to be reloaded into the heating chamber 1. After emptying, the container 10 The loading mechanism 4 is also removed and the loading opening is blocked. The materials loaded into the heating chamber 1 are heated due to the heat of combustion of the fuel supplied to the burners 3 through pipelines 15. In this case, the upper layer of materials is heated mainly by radiant heat exchange, and the subsequent layers are heated by convection by suction of the combustion products through the material. The supply of heated ferrosplas to the casting ladles is carried out as needed in CSIMO1474 .2

unloading containers 10 by a lifting mechanism 12. The container 10 is loaded with heated ferroalloys by the feeder 7, and 5 the weighting of the required portions is carried out by the weighing platform 11.

As the consumption of ferroalloys supplied to the casting ladles, materials heated in the chamber

to heat 1, is lowered down into the hopper 3, creating a certain margin. The inclined septum 6 ensures uniform sucking of the combustion products through the layer of materials and contributes to the blinking of the lower part of materials to the primary gases, which is the primary discharge, which maintains the temperature on the heated materials in the specified

0. Limits This temperature is controlled by the pulse of the temperature sensor 14. The same pulse is used to regulate the fuel supply depending on the temperature of the flue gases in the pipe 9. The baffle 6 allows you to create a cavity free of material 8 to which the pipe 9 of the flue exhaust pipe is connected. Via

0 of the regulating throttle valve 13, a vacuum is maintained in the upper part of the heating chamber 1, which prevents the outgrowth of gases through the loading mechanism 4. Fouters. For example, ka 5 preserves the casing of the hopper 2 from the center of the core and reduces heat loss.

The combination of the main operations for the preparation of ferroalloys associated with the creation of their stock, heating

.- and dosing, in one device, allows to significantly simplify the technology of preparation and supply of ferroalloys, to the pouring ladle and reduce the number of units of equipment poured. The proposed device simplifies the structural solution of the unit for heating ferroalloys, as compared with the known, without worsening the technical characteristics, allows creating a supply of heated ferroalloys, improving the conditions for removing burning products and supplying fuel and air to the burners.

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Claims (1)

A device for heating ferroalloys containing a heating chamber with burners, a hopper, a loading mechanism, a smoke exhaust path and a fuel supply regulator, characterized in that, in order to simplify the design, improve the conditions for removing combustion products, the heating chamber and the hopper are made in the form of a single lined tank, in the lower part of which an inclined partition-visor is installed, and the smoke exhaust duct is placed under the partition-visor. > 1 1191474 2