SU908869A1

SU908869A1 - Ignition furnace of circular agglomeration machine

Info

Publication number: SU908869A1
Application number: SU802947547A
Authority: SU
Inventors: Владимир Акимович Шурхал; Владимир Феодосьевич Подлубный; Аркадий Захарович Крижевский; Лев Ефимович Фрадкин; Иван Сидорович Лысенко; Игорь Михайлович Сальников; Анатолий Иванович Забила; Валентин Борисович Лукьянов
Original assignee: Институт газа АН УССР
Priority date: 1980-06-30
Filing date: 1980-06-30
Publication date: 1982-02-28

Description

Изобретение относитс к металлур .гии и предназначено дл использовани при агломерации и обжиге руд и других материалов.The invention relates to metallurgy and is intended for use in the agglomeration and calcination of ores and other materials.

Известен зажигательный горн кольцевой агломерационной машины, выполненный из секций трапециевидной формы , включающий внутреннюю и наружную вертикальные стенки, свод, горелки и расположенные р дами трубопроводы дл подвода топлива и воздуха 1.An incendiary horn of an annular sintering machine, made of trapezoidal sections, is known, including internal and external vertical walls, roof, burners and pipelines arranged in rows for supplying fuel and air 1.

При использовании известного зажигательного горна вследствие неравномерного прогрева сло материала на колосниковой решетке полученный после агломерации продукт имеет неоднородный состав и, кроме того, наблюдаетс повышенный удельный расход топлива.When using the known incendiary hearth due to uneven heating of the material layer on the grate, the product obtained after sintering has a heterogeneous composition and, in addition, an increased specific fuel consumption is observed.

Цель изобретени - повышение, качества продукта и сокращение удель:ного расхода топлива. The purpose of the invention is to improve the quality of the product and reduce the specific fuel consumption.

Поставленна цель достигаетс тем, что в зажигательном горне с горелками, отношение длин внутренней и наружной вертикальных стенок составл ет 0,35-0,7, а отношение рассто ни от внутренней вертикаЛьной стенки до оси горелки первогоThe goal is achieved by the fact that in an incendiary furnace with burners, the ratio of the lengths of the inner and outer vertical walls is 0.35-0.7, and the ratio of the distance from the inner vertical wall to the axis of the burner

р да к рассто нию между р дами равно 0,5-0г 75.The distance between the rows is 0.5-0g 75.

На фиг.1 схематично изображен с горн в плане и схема его установки на кольцевой агломерационной машине; на фиг.2 - то же, поперечный разрез; на фиг.З - трапециевидна секци в ,аране.In Fig.1 schematically depicted with a horn in the plan and the scheme of its installation on the sinter ring machine; figure 2 is the same cross section; on fig.Z - trapezoid section in, aran.

Устройство включает секции 1 тра10 пециевидной формы, внутреннюю 2 и наружную 3 вертикальные стенки, свод 4, торцовую стенку 5, горелки, трубопроводы б и 7 дл подвода топлива и воздуха соответственно, подогре15 ватель 8 и эксгаустер 9.The device includes sections 1 of a trapezoidal shape, inner 2 and outer 3 vertical walls, roof 4, end wall 5, burners, pipes b and 7 for supplying fuel and air, respectively, preheater 8 and exhauster 9.

Отношение длины а внутренней боковой стенки 2 горна (по внутреннему периметру футеровки горна) к дли-, не b наружной боковой стенки 3. равнЬ The ratio of the length and of the inner side wall 2 of the hearth (along the inner perimeter of the hearth lining) to the length, not b, of the outer side wall 3. equal

20 0,35-0,70, а отношение рассто ни В от внутренней боковой стенки до оси горелок первого р да к рассто нию 6 между ос ми горелок соседних р дов (шаг р дов горелок) равно 0,5-0,75. 20 0.35-0.70, and the ratio of the distance B from the inner side wall to the axis of the burners of the first row to the distance 6 between the axes of the burners of adjacent rows (step of rows of burners) is 0.5-0.75.

Claims

25 The magnitudes of the variation limits for ratios were established on the basis of the need to ensure uniform thermal expansion of the trapezoidal roof slabs (different lengths of 30 bases) when they are heated to 11001350 ° C. It also achieves the uniformity of heating the material being processed across the width of the working web of the ring sintering machine, thereby reducing fuel consumption per unit of product. Incendiary horn works as follows. Pipe b and 7 supply fuel and air to the burners. The latter can be heated by passing through the preheater 8, while cooling the surface of the hearth of the furnace 4 to reduce heat loss to the surrounding space. The fuel ignites and burns in the working area of the hearth. The products of combustion of fuel s are sucked through a layer of material loaded onto the grate of the sintering machine under the action of the vacuum generated in the exhauster. During the rotation of the grate around the vertical axis of the machine, the layer of material moves continuously under the incendiary mountain where it is uniformly heated to the same depth due to the heat released during the combustion of gas or liquid fuel. This helps to reduce the specific consumption of process fuel (solid fuel contained in the charge). The efficiency of the proposed furnace is given in the table on the example of lime burning used in the sintering process of ores. Heterogeneous Practically Homogeneous Uniform Continued table Almost homogeneous Nonhomogeneous 0.45 0.0145 Heterogeneous Almost homogeneous Homogeneous Almost uniform Not homogeneous Thus, the most economical are constructive incendiary horn in which the ratio: b and accordingly 0.35 -0.70 and 0.500, 75, Claim of the invention Incendiary horn of an annular sintering machine, made of a trapezoidal section, containing inner and outer walls, roof, burners and races laid pipelines for supplying fuel and air, characterized in that, in order to improve product quality and reduce specific fuel consumption, the ratio of the inner and outer vertical walls is 0.35-0.7, and the ratio of the distance from the inner vertical the walls to the first row of osigorelles to the distance between rows of burners is 0.5-0.75. Sources of information taken into account in the examination 1. USSR author's certificate 513096, cl. F 27 B 21/00, 1975.