SU564499A1

SU564499A1 - Double-tank steel-making furnace

Info

Publication number: SU564499A1
Application number: SU7602339900A
Authority: SU
Inventors: Владимир Ильич Красновицкий; Валерий Федорович Чирихин; Нина Алексеевна Кудрявая; Константин Дмитриевич Мокрушин; Анатолий Александрович Носков; Виктор Николаевич Дорофеев; Леонид Александрович Бровкин
Original assignee: Череповецкий Ордена Ленина Металлургический Завод Им. 50-Летия Ссср; Ивановский энергетический институт им. В.И.Ленина
Priority date: 1976-03-30
Filing date: 1976-03-30
Publication date: 1977-07-05

Description

1one

Изобретение относитс к области черной металлургии, конкретнее-к конструкци м: сталеплавильных печей.The invention relates to the field of ferrous metallurgy, more specifically to the construction of: steel-smelting furnaces.

Известна двухванна сталеплавильна печь, содержаща две разделенные порогом ванны, перекрытые общим сводом с пережимом , в котором установлены Стационар-, ные сводовые горелки l. Однако в такой печи невооможно регулировать положение факела в ванне, в св зи с чем топливо сжигаетс неэффективно с точки зрени нагрева шихты.A two-steel steel-smelting furnace is known, containing two baths separated by a threshold, covered by a common roof with a pinch in which the Stationary roof burners l are installed. However, in such a furnace, it is not possible to adjust the position of the flame in the bath, therefore, the fuel is burned inefficiently from the point of view of heating the charge.

Наиболее близкой к предлагаемому изобретению по технической сущности и достигаемому результату вл етс двухванна сталеплавильна печь, содержаща две разделенные порогом ванны, перекрытые общим сводом и имеющие над разделительным порогом подвижные свободные горелки, сопла в каждои из которых направлены в рабочее пространство одной из ванн 2 , Недостатком такой печи вл етс то, что нагрев щихты в камерах осуществл етс одной горелкой, котора имеет ограниченную площадь факела и поэтому обеспечивает неравномерныйClosest to the proposed invention, the technical essence and the achieved result is a two-bath steel-smelting furnace containing two baths separated by a threshold, covered by a common vault and having movable free burners above the separation threshold, each of which are directed to the working space of one of the baths 2, Disadvantage Such a furnace is that the heating of the chambers in the chambers is carried out by one burner, which has a limited flare area and therefore provides uneven

по щкрине ванны прогрев и плавление щих- ты.on the base of the bath, warming and melting are possible.

Целью изобретени вл етс улучшение нагрева щихты по щирине ванны. Поставленна цель достигаетс тем, что в предложенной двулванной печи кажда ванна снабжена двум дополнительными горелками , установленными в своде по передней и задней его лини м, сопла ксугорых расположены йаThe aim of the invention is to improve the heating of the bath across the width of the bath. The goal is achieved by the fact that in the proposed two-furnace furnace, each bath is equipped with two additional burners installed in the arch along its front and rear lines, the nozzles are located

рассто нии друг от друга, равном 0,4 -distance from each other equal to 0.4 -

0,8 ширины ванны, при этом дополнительнйе горелки могут быть установлены с возмож- .ностью поворота на угол 175-185° отноcитeльн вертикальной оси.0.8 bath width, with additional burners can be installed with the possibility of rotation at an angle of 175-185 ° relative to the vertical axis.

На фиг. 1 представлена предложенна двухванна сталеплавильна печь, продольный разрез ; на фиг. 2 - то же, вид сверху; на фиг. 3 - то же, поперечный разрез. Двухванна сталеплавильна печь состоитFIG. 1 shows the proposed twin-steel steel-smelting furnace, longitudinal section; in fig. 2 - the same, top view; in fig. 3 - the same cross section. Dvuhvanna steelmaking furnace consists

из двух ванн 1, 2 , ;разделенных порогом 3, имеющих с торцов дымоотвоД щие окна 4 головок 5, вертикальные каналы 6, 7, и свода 8. В своде порогом 3,установлены горелки 9, сопла которых направле-of two baths 1, 2,; divided by threshold 3, having smoke outlets 4 heads 5 at the ends, vertical channels 6, 7, and roof 8. In the arch, with threshold 3, burners 9 are installed, the nozzles of which

Claims

us in the working space of the baths along the longitudinal axis of the sing. angle of 45 ° to the horizon. The burners 10 are installed in the roof above the heads. Additional burners 11 in each bath are also installed in the roof, which are located symmetrically to the longitudinal axis of the furnace at the base, for example, 0.5 the width of the bath at the threshold of the charging windows. Oxygen tuyeres 12 are installed in each bath for purging i tal. The chamber operates as follows. In the cold bath 1, in which the charge is heated, burners 9 and 11 are included in the operation, and purge tuyeres 12 and burner 10B are disconnected and lifted under the roof. The burning bath 2 is at this time being purging the hard metal through tuyeres 12, pubescent up to the boundary shpak-metal. Burners 9 and 11 in it are disabled, and derived under the arch. U burner included as needed. The process gases released during the purging of the metal in bath 2 are directed to a cold bath, where they burn and give off heat to the mixture. The mixture in bath 1 is also heated by the torches of the burners 9 and 11. The torches of the burners 11 affect the middle and at the end of the bath areas of the charge that are not affected by the torch of the main burner 9. The furnace with the proposed arrangement of the burners provides a more even and efficient heating of the charge. The flue gases are removed through the vertical channel 6. After the steel has been discharged from the bath 2 and the valves are switched, the burners 9 and 11 are activated in the bath 2, in which the charge is heated. Tuyere 12 it lifts under the arch. In the adjacent bath 1, at this time, there is a purge through tuyeres 12. In it, burners 9 and 11 are switched off and raised under the roof. Gore 1O is used as needed. The process gases from bath 1 enter the bath 2. Next, the flue gases from bath 2 through the vertical channel 7 are released into the atmosphere. In the proposed furnace, the fuel supply to the heating bath is dispersed, the heat-affected area of the torches with the charge is expanded, which increases the speed and the level of scrap heating before pouring liquid iron. Claims 1. A dual-steel steel-smelting furnace comprising two separate baths covered with a threshold, covered with a vault, having windows; and movable arch burners located above the separation threshold, the nozzles of each of which are directed into the working space of one of the baths, characterized in that, in order to improve the heating of the charge across the width of the bath, each bath is equipped with two additional burners installed in the arch at the front and rear its lines, the nozzles of which are located at a distance from each other equal to 0.4 - the width of the bath. 2. Furnace according to Claim 1, characterized in that the decal-type arch burners are installed so that they can be rotated through an angle of 170-185 relative to the vertical axis. Sources of information taken into account in the examination: 1. Author's certificate of the USSR № 213910, cl. C 21 C 5/56, 1965

2. Magazine Metallurg No. 6, 1972, p. 19, fig. one.

/ - f W

fue.l

YU

FIG. g