SU90684A1 - Method of removing slag in the liquid state from slags from open-hearth furnaces - Google Patents

Description

Ways away; no slag in liquid-.m state; from w. Akovikov open-hearth furnaces are known, for example, the removal through the scrapers through the window in the wall of the slag, etc.

However, all I3 (the known methods have the significant disadvantage that they do not ensure reliable slag removal in the LIQUID state when it is tempered, i.e. about 1350 PSI.

The inner surface of the walls of the slagovagus can be heated to the indicated high temperature only when 11 through 1 passes through the slag slag of the combustion products.

When gas or air passes through slags, the temperature of the inner surface of the walls decreases sharply.

By the same with a low thermal conductivity of slag and with a small interval, about 5-15 minutes. between valve overshoots, the drastic changes in the temperature of the inner surface of the walls of the slag walls extends only to a small depth, on the order of several millimeters in the walls of the slag walls. At a certain temperature depth, the walls in the walls remain constant:: :: the temperature of the slag melting point, decreasing towards the outer surface of the walls.

A more or less significant increase in the temperature of the slags by means of a higher load of gas and air in the regenerators cannot be achieved because gas and air in this case must be heated, for example, pa 150-200 pypge norm pagreva, which does not provide adequate stability dinas bricks, nor high-dinosaurs, one of the topmost rows of nozzles of regenerators.

The essence of the proposed method for the removal of sclac in the liquid state from sclacciuvic is that it is carried out with obtaining, lined with X1} omo, gagpez1-G by sirpich slag: viCiax, low-melting eutectic compounds formed by asphalt slag. Placed in the slopes of slag blocks flux materials.

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In necessary cases, for flux slags, fluxing materials can be used, such as fluorine-rich carbon nanotubes, alkali metal oxides, soda, and others.

To ensure that the kdenp in the slags of fluxing mate rials during the entire campaign, they are used in the slopes of the slag pads made in the form of m arrays of flux material from the side walls) and at the pass wall of the slags.

During the operation of the furnace m, the assays of the fluxes of the slags will gradually "melt the wasps / the slag dust that they donate, and in such a way that by the time of the campaign campaign they become empty.

To prevent: the slag composition of the slag is drained with chromium magnetite bricks when it is drained into the slag glades and slag walls.

Subject invention

The method of slag removal is of the liquid state from the slag furnaces of open-hearth furnaces, FROM TYPES and so that, in order to ensure reliable removal of the plaque from the slag in the liquid state during operation, it is prepared to obtain, in, the baths. inside, chrome agneaitic bricks of slagosks, fusible (with a melting point of 1 ° C °), eutectic compounds formed by burned products and placed in the slopes of slags, fluxed materials. For example, omeshana-yu with alumina skalina, and flowing through the holes in the end walls of the slag in adjacent to these walls pkchakopriemniki.