Sintered ore multi-chamfer vertical cooling furnace bottom discharging type feeding system

Abstract

The invention relates to a sintered ore multi-chamfer vertical cooling furnace bottom discharging type feeding system. An ore buffer bin is arranged above a plurality of vertical cooling furnaces, andthe bottom of the ore buffer bin is a plane. Each guide chute is composed of a straight section and an inclined section, the tops of the straight sections communicate with the bottom of the ore buffer bin, and the bottoms of the inclined sections are connected with feed inlets of the vertical cooling furnaces. An electric flap valve is arranged at the joint of each straight section and the corresponding inclined section and controlled by a valve controller, each valve controller is arranged outside the guide chute, and the control end of each valve controller is connected with a central control room. A pressure balance device comprises a pressure gage, a smoke balance guide pipe and a pressure regulating valve, the pressure gage is arranged at the top of the ore buffer bin, one end of thesmoke balance guide pipe communicates with the interior of the ore buffer bin, the other end of the smoke balance guide pipe communicates with a heat exchange air outlet pipeline of the vertical cooling furnaces, the pressure regulating valve is arranged on the smoke balance guide pipe, and the pressure regulating valve and the pressure gauge achieve linked control. By means of the sintered ore multi-chamfer vertical cooling furnace bottom discharging type feeding system, efficient and continuous cooling of sintered ore can be achieved, feeding is smooth, and operation is convenient.

Description

technical field [0001] The invention relates to the technical field of sinter cooling, in particular to a sinter multi-chamber vertical cooling furnace bottom-out feeding system. Background technique [0002] The sintering process consumes a lot of energy, ranking second in the steel industry. The sensible heat of sinter accounts for more than 40% of the total heat consumption, how to use this part of energy has become the focus of the industry. At present, the cooling and waste heat recovery of sinter in my country mainly adopts the ring cooler technology. In practice, this technology has the following disadvantages: 1) Due to the uneven charging, the waste heat parameters fluctuate greatly, which endangers the safety of the waste heat utilization system; 2) The system has serious air leakage problems. Never being able to keep up with solving the problem, resulting in serious attenuation of thermal efficiency, and the unorganized leakage of smoke and dust is very harmful ...

AI Technical Summary

Problems solved by technology

In practice, this technology has the following disadvantages: 1) Due to the uneven charging, the waste heat parameters fluctuate greatly, which endangers the safety of the waste heat utilization system; 2) The system has serious air leakage problems. Never keep up with solving the problem, resulting in serious attenuation of thermal efficiency, and the unorganized leakage of smoke and dust is very harmful to the environment

However, since it uses a single pre-stored segment, it does not separate the pre-stored segments

It only solves the problem of heat transfer uniformity, but does not fundamentally solve the problem of continuous feeding and maintenance

Moreover, there is no negative pressure adjustment device in the feeding device of the pre-storage section, which causes the smoke and dust to leak easily and cause pollution

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