SU627296A1 - Gas discharge of sintering machine - Google Patents

Description

The invention relates to agglomeration. ore materials, in particular to conveyor sintering machines.

Nsibo its close to the invention i by the technical essence and the achieved result is a gas disposal path of an agglomerating machine, containing a collector with dust bunkers and nozzles for unloading dust and charge debris connected to the vacuum chambers p1}.

The disadvantage of the known construction of a gas trap of one of the paths of the sintering machine is the impossibility of selectively diverting two gas streams from the extreme and from the aeutral {1X vacuum chambers through one collector. Laying the second collector in parallel with the first one is very difficult, if not impossible at all.

Installing apparates for sanitary cleaning of aggos directly on all vacuum chambers in most cases is also not feasible due to the lack of free space,

The aim of the invention is to reduce -v, the reduction of the volume of sinter gas to be selectively cleaned from dust and gaseous substances.

This goal is achieved by the fact that the collector is provided with two inclined partitions that form a slot along the longitudinal axis of the collector, dividing it into two compartments, while the lower compartment is connected to the upper vacuum chambers and the upper compartment to the sintering machine’s sintering chambers.

FIG. 1 shows the proposed device, a cross-section; in fig. 2, section A-A of FIG. one.

Claims (1)

The gas exhausting path of the sintering machine contains vacuum chambers 1, stands 2 and 3 connecting the collector to the central and outer vacuum chambers of the sintering machine, the upper 4 and lower 5 collector compartments, separated by inclined partitions 6 and 7, respectively, so that a slot for sticking solid materials into dust bunkers 8, equipped with nozzles 9 for unloading dust and charge spills, as well as nozzles 10 and 11 for connecting the collector to systems for dust collection and gas cleaning, respectively, remained. The cross-sectional area (for the passage of gas). the upper compartment should be on the order of 30-6% of the total cross section of the reservoir. The agglomeration gases formed during sintering of the charge and sucked by the exhauster pass through the collectors to the collector while the end of the vacuum chambers, about 2-3 last vacuum chambers of the discharge end agloventy and the first few vacuum chambers from the head end of the sintering belt, having a high concentration and low concentration of sulfur oxides, they enter the lower collector and then go to the dust collectors, where they are cleaned of dust. Gases from the central vacuum chambers (starting approximately from the middle of the sintering belt and ending at about 2-3 vacuum chambers to the unloading end of the sintering belt), which have a low volume and high concentration of sulfur oxides, go to the upper compartment of the flue and then go to sulfur removal. and other harmful substances. The spill of the charge and a considerable part of the dust carried out of the layer being sintered is precipitated in dust bins, from where they are discharged through the nozzles into the dust removal system. Inclined partitions and sinks are made with such a slope - to ensure the spontaneous rolling of dust, charge spillage and fragments of grates into the collector-gas duct and further into dust bins (as a rule, the angle of inclination on all sections should be at least 4O-4B h horizontal plane). In order to prevent the dust removal system from clogging with the grate fragments, the collector in the area under the sintering plant may be equipped with a safety grille. The gap between the inclined partitions 6 and 7, having a width of 2OO-400 mm. serves simultaneously for the aerodynamic communication of the gas flows of the upper and lower compartments. So, in the event of any violations of the mode of operation along the gas paths, a part of the agglomeable gas may transfer from one compartment to another, thus stabilizing the general aerodynamic mode of the sinter machine. The execution of the gas tract of the sintering trail of this construction makes it possible in parallel to carry out separate cleaning of the streams of agglogas with high dust content and with a high concentration of sulfur oxides or other toxic components. At the same time, on average, the volume of gas cleaning equipment and pressure reducing equipment is reduced by 2 times. In addition, the hydraulic resistance of the exhaust duct is reduced, as the gases pass through one stage of purification — one stream from dust, the other from gaseous components. Significantly reduced capital costs for the construction of gas cleaning systems and operating costs for dust collection and gas cleaning. The formula of the invented gas exhaust path of the sintering machine, containing a collector with dust bins and nozzles for unloading dust and charge spillages, connected by drains to vacuum chambers, characterized in that with a chain of reducing the amount of sinter gases subject to selective cleaning from dust and gaseous substances The collector is provided with two inclined partitions forming a slot along the longitudinal axis of the collector and dividing it into two compartments, with the bottom. The research institute compartment is connected to the extreme vacuum chambers by the stoppers, and the upper one to the central vacuum chambers of the sintering machine. Sources of information taken into account in the examination: 1. USSR Authority Department No. 471383, cl. F27, 21/00, 1975. Snign p. 9u2l