SU761575A1 - Device for input of deoxidizers into ladle - Google Patents

Description

The invention relates to ferrous metallurgy, and specifically to devices for input of deoxidizing agents in a steel-teeming ladle at converter steel production.

Known devices for introducing deoxidizers into the ladle, which contain tubs, hoppers, loaders. These devices do not provide the necessary accuracy of dosing and the distribution of deoxidizers by grade and the sequence of their input into the bucket.

A device for introducing deoxidizers into the bucket is known, which contains a weighing hopper with a feeder, a funnel, a chute, a driven funnel, a furnace for heating deoxidizers with a movable bottom and a lifting lid and funnels for the delivery of cold and heated deoxidizers [1].

However, the device does not improve the accuracy of dosing and the distribution of deoxidizers by grade and the optimal sequence of their entry into the bucket. The need to meet these requirements is especially important for existing converter shops when they are modernized to improve the quality of steel. The possibility of ensuring the sequence of input into the bucket creates conditions for a more complete assimilation of the material. For example, if granulated aluminum is introduced under

a layer of silico-manganese, the latter pushes it into the metal, preventing the ascent of light aluminum, and consequently, its intoxication above the norm.

5 The aim of the invention is the elimination of these disadvantages by improving the accuracy of dosing and the distribution of deoxidizers by grade and the sequence of their entry into the casting ladle.

0 This goal is achieved by the fact that the device is equipped with stationary bunkers with additional feeders located above the weighing bins, the chute is made two-arm and equipped with a gate in the drive-driven zone, and the funnels of the cold and heated deoxidation channels are made with combined branch pipes.

FIG. 1 shows a general view of the device.

0 and its elements; in fig. 2 — view A in FIG. 1. A device for introducing deoxidizers into the bucket contains a loading mechanism 1, which has several material delivery points, under which stationary hoppers 2 and feeders 3 are fixed, with toes inserted into the weighing bin 4. A feeder 5 is installed under the weighing bin, funnel 6. The funnel is connected to a two-arm chute 7, having

0 in the zone of branching gate 8 with a drive 9.

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Each of the sleeves 10 of a two-sleeve chute is connected through a pipe 11 with a charging funnel 12 equipped with a drive 13. The filling funnel is pivotally fixed at the base, which allows changing the place of issue of ⁵ scavengers. A lifting cover 14 with a drive 15, a furnace for heating the deoxidizers and its movable hearth 16 with a drive 17 are installed under the charging hopper. pipes 20. A metering capacity of 21 is installed under the pipe with a bolt 22 mounted on a telpher 23. The telfer is adapted to move along a rail 24 to a weighing platform 25 located above the supply chute 26 and a ladle 27. 20 m

The device works as follows.

The loading mechanism 1 with deoxidizing agents fills stationary bunker 2. Then with the help of feeders 3, depending on the technology, the deoxidizing agents are fed into the weighing bin. In this case, they can be served either separately or in a mixture, or they can form the necessary layers. Feeders 5, suspended deoxidizers, are fed through a funnel 6 into a two-arm chute 7, and through it using the gate 8 and its actuator 9 through the sleeve 10 and the nozzle 11 the material enters the charging funnel 12. Depending on the type of material and the optimal input sequence, it is served or for heating, lifting the lid 14 with the actuator 15, to the bottom 16 or into the funnel 19. By raising the bottom using the actuator 17, the heated deoxidizers are poured into the dosing tank 21 in the tank 20, for example, by feeding aluminum through the funnel 19 and tr bu 20 into the metering container 21, and then

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on it to fill up more heavy deoxidizers through the funnel 18. After the formation of the desired composition of deoxidizers by telpher 23, the dosing capacity 21 is transferred and placed on the weighing platform 25, or without it, on the foundation.

Opening the shutter 22, deoxidizers on the feed chute 26 is injected into the casting ladle 27.

Technical and economic efficiency of the device is as follows:

increases the accuracy of dosing of scavengers, which reduces their consumption;

it is possible to introduce deoxidizers by a given range of materials and in optimal sequence, which improves the quality of deoxidation, expands the range of steels produced.

Claims (1)

Claim A device for introducing deoxidizers into a bucket containing a weighing bin with a feeder, funnel, chute, charging hopper with a drive, a furnace for heating deoxidizers with a moving hearth and lifting lid and funnels of cold and heated deoxidizers output paths, characterized in that · to increase Accuracy of dosing and distribution of deoxidizers by grade and sequence of input into the bucket, it is equipped with stationary bunkers with additional feeders located above the weight bins It is also equipped with a drive gate in the branching zone, while the funnels of the paths for dispensing cold and heated deoxidizers are made with combined branch pipes.