SU64081A1 - Method of lumping lodina in steelmaking furnaces - Google Patents

Description

It is well known that the ore-thermal processes are most successful when they are conducted in a furnace at a coal hearth. Therefore, in those cases when corner shersdus in the produced products is allowed to be satisfied: but high limits or there is a wagon, south to remove carbon when refining the alloy, the ore-thermal process is carried out on yrc.ibHoii hearth. For example, electric furnaces for the smelting of ferrosilicon, ferrochrole, ferromanganese, and other alloys are lined with coal blocks.

Rapid wear of the coal lining, usually involved in recovery processes, is mandatory; stopping the furnace for cold repairs after wear makes it absolutely impossible to use yro, ibHoii hearths for reflective effects | 1 open-hearth type.

The sintering of the hearth was already proposed in these furnaces with a mixture of vrl, pitch, and resin.

The present invention is also intended to use this known agglomerate mixture, but, according to the invention, the mixture of these materials is cast evenly onto the pre-heated hearth of the kiln and coated with the charge. When this occurs, the sintering of the bottom occurs under the melted layer: 1 charge.

As a coal mine, go for small-scale, charcoal, chox, electrode bo, graphite, and others; As a binder, gpi ei is a coal-tar resin, pitch С Я О COX).

Zavalenyu O coal) a lot of razrav 1va from and eii desired form of baths, and then zazal 1va from melting; preferably with this :. close as soon as possible

the whole of S. coal,

further melting

 No. DOED 5 HOW WELL.

In IRO, the melting layer of the angles O is coked into the role of coal PODIN.

The consumption of coal, as well as U) i6op tolko11 are set in each case separately, in the nature of the process.

After the coal has been worked, you can niroEan (from the resulting alloy from harmful impurities or start any other process.

In electric furnaces operating on coal hearths, the above-mentioned method of making the hearth can be used to build up the kiln parts of the kiln and thereby increase the lining service.

Listed below are mixtures of compounds that have shown good durability and high reactivity. Mixtures were used to weld the main hearth:

1) coke breeze with a grain size of 5 mm- 75%, dewatered resin -25%,

2) fine coal with a grain size of 10 mm - 75%, coal tar pitch mixed with tar - 25%.

A mixture consisting of 75% electrode bo and 25% coal tar was used to weld the acid hearth.

This method of coking the bottom of coal Maccoii under a layer of powder can be widely used for the production of ferroalloys in electric and open-hearth furnaces, in nonferrous metallurgy for the production of mattes and others. It will allow to organize the production of new types of alloy, like ferronickel, ferrocobalt and others. It will also allow you to successfully organize the carburetor steel smelting process.

Subject invention

The method of sintering of the hearth in steel-smelting furnaces from coal, pitch and resin, characterized in that the mixture of these materials is cast evenly on the preheated hearth of the furnace and covered with screeds, in order to bite the scum under the molten layer of binder.