A well-type slag tank device for high-temperature steel slag waste heat recovery

Abstract

The invention provides a well type slag ladle device for recycling the waste heat of high-temperature steel slag. The well type slag ladle device comprises a well type slag ladle, water spraying devices, steam discharge pipelines, steam pressure-reduction drain valves, counter-weight scales, a lever device, a jacking rod, a valve plate, a valve body, an air exhaust blind ditch, a slag water leaking mechanism, a slag water collecting mechanism, a water draining blind ditch, a slat ladle cover, support protection frames, plate-type heat-exchanging devices, steel plate skeletons, steel plate bent frames, am opening arm, a straining chain, a rotary mechanism and an electric-hydraulic push rod, which are connected mutually, wherein a plurality of support protection frames distributed uniformly are mounted on the inner side of the well type slag ladle; the outer side surfaces of the support protection frames are connected with the inner wall of the well type slag ladle together, the plate-type heat-exchanging devices comprise the steel plate skeletons and the steel plate bent frames; the steel plate bent frames are inlaid in the reserved grooves of the steel plate skeletons; multiple blocks of plate-type heat-exchanging devices are mounted on the inner sides of the well type slag ladle and the support protection frames and connected with the inner sides of the support protection frames together. The well type slag ladle device for recycling the waste heat of the high-temperature steel slag has the characteristics of high efficiency, security, reliability, water conservation and zero emission.

Description

Technical field: [0001] The invention belongs to the technical field of blast furnace slag treatment, in particular to a well-type slag tank device for recovering high-temperature steel slag waste heat. Background technique: [0002] In the prior art, the patent 201010584171.5 provides a method for utilizing the residual heat of the steel slag hot stuffy process stuffy slag return water. The method is to pour high temperature steel slag into the hot stuffy pool and then spray water on the hot slag. A large amount of water infiltrates to the bottom through the gap of the slag layer, and then enters the sedimentation tank through the drainage ditch for recycling. At this time, the temperature of the return water can reach about 80°C, which contains a lot of heat energy. This method uses a serpentine pipe and a water tank to form a heat exchanger. The purified hot water at about 80°C enters the serpentine pipe, and exchanges heat with the cold water in the water tank through th...

AI Technical Summary

Problems solved by technology

The common feature of the above steel slag waste heat recovery methods is to recover the low-temperature hot water and wet steam with impurities, and then recover the steel slag waste heat in the form of conversion. The main problems of these processes are: a. Many energy conversion times, high heat loss, The recovery rate is low; b. These hot water and steam containing impurities need to be purified by secondary heat exchange, dust removal, etc. before they can be used, so there is a temperature drop High, low efficiency, large investment in equipment

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