SU159552A1 - - Google Patents

Description

Devices for desulfurizing pig iron on the blast furnace chute are known with nute metal scrap metal with a stream of reducing gas containing an atomized desulfurizer.

Also known is an installation for blowing iron with oxygen, made in the form of a shell equipped with tuyeres for blowing and a pipe for exhausting smoke.

The proposed device, in contrast to the known ones, is made with two slit nozzles between which a flat stream of cast iron is sprayed by refining gas, which ensures continuity and high productivity of the process, since the contact surface between the desulphurizer and the cast iron creates on the surface of the smallest drops of cast iron.

The drawing shows a device for continuous refining of sprayed iron.

It consists of a receiving chamber 1 with a skimmer 2 and a flat drain toe threshold 5, a reaction chamber 4 enclosed in vessel 5, slotted sonlels 6 for gas supply, a receiving bucket 7 with a skimmer 8 (or without it) and a drain toe for cast iron 9 and a exhaust pipe W. Skimmer 2 serves to clean the iron from debris and slag and prevents gases from escaping from the reaction chamber.

The process of refining pig iron. Cast iron supplied to the receiving chamber 1 is fed to

A flat drain tip 3, from which a broad flat stream of cast iron falls down and at the level where it reaches its minimum thickness, but not yet broken, is sprayed with two flat convergent gas jets emerging from the slot nozzles 6 at an acute angle to each other on the movement of a stream of cast iron. The sprayed iron injected into the receiving bucket 7 in a gas jet, undergoing chemical and temperature changes along the way. In the ladle, the refining reaction is completed, the cast iron is settled from the slag and drained from the ladle through the drain toe 9.

Subject invention

A device for continuous refining of sprayed pig iron in suspension with gases, powdered oxidizers, reducing agents or desulfurizing agents, having a receiving chamber with a skimmer plate, a reaction chamber, a skimmer receiving ladle, or a drainage tip for the cast iron and a exhaust pipe for exhaust gases, and different exhaust gases for the cast iron and a different exhaust pipe for exhaust gases. in order to ensure an efficient and high-performance process of refining pig iron, the device is equipped with two slit nozzles for refining gas Torons flat iron strings.