Blast furnace slag waste heat recycling system

A waste heat recovery and blast furnace slag technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve the problems of destroying the industrial chain, changing slag, and slag flushing steam not being used, so as to improve the economic benefits of enterprises and reduce water consumption Effect

Inactive Publication Date: 2012-03-28
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been researches on the recovery of waste heat from blast furnace slag by air quenching method and steel ball heat exchange, but these methods cannot be popularized and implemented because they change the "activity" of the final product of slag and destroy the original industrial chain.
On the premise of maintaining the water

Method used

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  • Blast furnace slag waste heat recycling system
  • Blast furnace slag waste heat recycling system

Examples

Experimental program
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Embodiment Construction

[0014] Such as figure 1 , a blast furnace slag waste heat recycling system, comprising a liquid slag transport tank 1, a liquid slag fixing tank 2, a sealed slag flushing tank 3, a slag flushing water nozzle 4, a spiral slag discharge device 5, a water slag dehydration device 6, a water slag Conveyor belt 7, slag flushing water sedimentation tank 8, slag flushing steam discharge pipe 9, partition wall heat exchanger 10, slag flushing water pump 11, evaporation boiler 12, generator 13, steam condenser 14, power generation water circulation pump 15 and compressed air Supplementary pressure device.

[0015] The sealed slag tank 3 is a sealed tank body, liquid slag flows into the sealed slag tank 3 through the liquid slag fixing tank 2, and the slag and water spray realize the purpose of generating steam, so the sealed slag tank 3 is the place where steam is generated. The sealed slag tank 3 has a liquid slag inflow port and a steam discharge pipe connected with the liquid slag f...

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PUM

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Abstract

The invention discloses a blast furnace slag waste heat recycling system, comprising a liquid slag transport tank, a liquid slag fixing tank, a seal flush slag tank, a flush slag water nozzle, a spiral slag removal unit, a water granulated slag dehydration unit, a water granulated slag transport belt, a flush slag water sedimentation basin, a flush slag steam discharge pipe, a dividing wall type heat exchanger, a flush slag water pump, an evaporation boiler, a generator, a steam condenser, a generating water circulation water pump, and a compressed air repressing unit. According to the invention, the present blast furnace slag water quenching technology can be kept, high activity of the products of the water granulated slag can be kept, and normal running of the industrial chain of the application channel of the water granulated slag can be guaranteed; and the recycling of the steam waste heat by using low water quantity to flush slag can be realized.

Description

technical field [0001] The invention relates to waste heat recovery and utilization of blast furnace slag, which is a waste heat recovery and utilization system capable of maintaining the water quenching process and keeping the properties and uses of the slag after water quenching unchanged. Background technique [0002] The blast furnace ironmaking process produces a large amount of liquid slag, which contains huge heat. Therefore, the recovery and utilization of blast furnace slag waste heat has great economic value. Since the blast furnace slag water quenching process is very mature, the "water slag" produced by it has a high "activity", which is not only a good "clinker" for cement, but also has become a building material industry --- concrete An indispensable "additive", the use of "water slag" to prepare cement has become a very mature technology in the building materials industry. There have been researches on the recovery of waste heat from blast furnace slag by air...

Claims

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Application Information

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IPC IPC(8): C21B3/08F27D17/00
CPCC21B2400/024C21B2400/062C21B2400/074C21B2400/08Y02P10/20Y02P10/25
Inventor 高贤成李丙来高新运王连杰赵晓明李传辉陈霞周波杨士岭梁丽萍肖海龙邹金城张熙伟孟令军马庆涛
Owner SHANDONG IRON & STEEL CO LTD
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