SU885777A1

SU885777A1 - Regenerator nozzle

Info

Publication number: SU885777A1
Application number: SU792791572A
Authority: SU
Inventors: Виктор Николаевич Андрющенко; Вадим Николаевич Гуров; Юрий Анатольевич Сазонов; Эдуард Васильевич Шаповалов; Михаил Егорович Михайлов; Георгий Иванович Антонов; Яков Рахмилевич Красс; Василий Михайлович Тарасов; Сергей Эдуардович Шаповалов; Игорь Константинович Борщевский
Original assignee: Предприятие П/Я В-8253
Priority date: 1979-07-02
Filing date: 1979-07-02
Publication date: 1981-11-30

Description

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Изобретение относитс к черной металлургии, конкретно к конструкции: /насадок регенераторов мартеновских печей.The invention relates to ferrous metallurgy, specifically to the design: / nozzles of open-hearth furnace regenerators.

Известна насадка регенератора, выполненна из отдельных огнеупорных кирпичей с открытыми каналами или со сквозными каналами 1 .Known nozzle regenerator, made of individual refractory bricks with open channels or through channels 1.

К недостаткам известной насадки относ тс мала строительна прочность , занос каналов плавильной пылью и большой объем ручного труда при их ремонте.The disadvantages of the known nozzle include low building strength, the drift of channels with melting dust and a large amount of manual labor during their repair.

Наиболее близкой к предлагаемой вл етс насадка, имеюща вертикальные каналы круглого сечени по всей высоте Г .Closest to the present invention is a nozzle having vertical channels of circular cross section along the entire height G.

В таких насадках, несмотр на существенное увеличение строительной прочности, также происходит интенсивный занос каналов плавильной пьшью, особенно на печах, работающих с продувкой ванны кислородом. Следствием этого вл етс уменьшение степениIn such nozzles, in spite of a significant increase in building strength, there is also an intense drift of the channels with a smelting drink, especially on furnaces working with blowing a bath with oxygen. The consequence is a decrease in the degree

регенерации тепла и снижение работоспособности огнеупорной кладки рабочего пространства печи за счет ухудшени на ней т ги. Стойкость таких насадок также низка и замена их при ремонтах сопр жена с применением т желого ручного труда в услови х высоких температур и запыленности .heat recovery and reduction in the performance of the refractory masonry of the furnace working space due to the deterioration of draft on it. The stability of such attachments is also low and their replacement during repairs is coupled with the use of heavy manual labor in conditions of high temperatures and dust.

Цель изобретени - повышение сро10 ка службы и снижение трудозатрат при ремонтах.The purpose of the invention is to increase the service life and reduce labor costs for repairs.

Поставленна цель достигаетс тем, что насадка регенератора из огнеупорного материала, содержаща The goal is achieved by the fact that the nozzle of the regenerator of refractory material containing

15 вертикальные каналы круглого сечени , снабжена втулками из углеродсодержащего материала, установленными в вертикальных каналах по всей их высоте с зазорами относительно поверхности 15 vertical channels of circular cross-section, provided with sleeves of carbon-containing material, installed in vertical channels along their entire height with gaps relative to the surface

Claims

30 channels, and the gaps are filled with a binding refractory mass with strength after solidification of the refractory material with a hardener. 3 FIG. I shows part of the nozzle of the regenerator, a vertical section; in fig. 2 - the same, top view. . The nozzle has-blocks 1, made of refractory material (fireclay, forstarite, etc .. In the blocks along their entire height there are vertical channels 2 of circular section, in which are installed bushes 3 of carbon-containing material. Between bushes 3 and channel walls 2 have gaps 4, which, when the bushes 3 are installed, are filled with a binder with an easily destructive refractory mass containing, for example, chamotte powder — 40–45%, ground clay — 10–15% sand — 40–45%, binder — the rest When passing through the nozzle of the smoke having a high temperature and with oxidizing agents (oxygen, carbon dioxide, the refractory materials of the nozzles are heated due to the enthalpy of smoke, and additional heating due to the exothermic oxidation of the carbon of the sleeves 3 with smoke fumes. The carbon monoxide released at the same time prevents the deposition of the 3 containing smoke of melting dust. As a result, in the course of the campaign, the channel furnaces are not only not melted by dust, but also increase somewhat in diameter due to the burning of carbon from the sleeves. This improves the kiln's draft and allows for an increase in heat loads to compensate for increased heat loss by the masonry in the second half of the kiln's campaign without reducing its resistance. When passing through the nozzle air is heated due to the accumulated heat refractories. At the same time, the temperature of the heated air in comparison with the known nozzles is higher, since the proposed nozzle provides, as Bbmje pointed out, a greater degree of heat accumulation by refractory masonry. The exothermic reaction with carbon of the sleeves 3 also contributes to an increase in air temperature. Forming carbon dioxide with a three-atom gas increases the efficiency of heat removal from the masonry, and also improves the luminosity of the flame when the fuel burns in the working space of the furnace. A high efficiency of the nozzle is provided throughout the entire campaign of the furnace, since the channels 2 of the proposed nozzle are not brought in by melting dust. When the furnace is stopped for cold repair, the remains of the sleeves 3 are removed from the nozzles 2, and in their place the new carbon-containing sleeves 3 are installed on the Bonding refractory mass. Thus, the repair of the proposed nozzle is reduced only to the replacement of the sleeves 3. The blocks 1 are suitable for repeated use, which, in comparison with the known nozzles, reduces the specific consumption of refractories and sharply reduces labor costs, especially manual labor during repairs. Claims of the refractory nozzle of refractory material, containing vertical channels of circular cross section, characterized in that, in order to increase service life and reduce labor costs during repair, the nozzle is provided with carbon-containing material sleeves along its entire height with gaps relative to the surface channels, the gaps being filled with a binding refractory mass with strength after hardening with a lower strength of the refractory material. Sources of information taken into account in the examination 1. E. Abrosimov, and others. Steel metallurgy. M., Metallurgists, 1961, p. 590-591.

2. USSR author's certificate №88339, cl. F 27 O 17/00, 1949.

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FIG. 2