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Recycling system of blast furnace slag heat

A technology of heat energy recovery and blast furnace slag, applied in the direction of improving energy efficiency, recycling technology, furnaces, etc., can solve environmental pollution and other problems, achieve high granulation efficiency, increase heat transfer surface area, and reduce slag flow deflection Effect

Active Publication Date: 2013-01-02
SCIMEE TECH & SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the production of steel products, a large amount of waste is also discharged, causing serious pollution to the environment

Method used

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  • Recycling system of blast furnace slag heat
  • Recycling system of blast furnace slag heat
  • Recycling system of blast furnace slag heat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] as attached figure 1 As shown, a blast furnace slag heat energy recovery system of the present invention includes a granulation unit, a fluidized bed slag particle collision unit, an air heat exchange unit, a superheated steam recovery unit, and a slag discharge unit. The granulation unit is composed of a slag tank 1. Diversion tank 2, wind crushing fan 3, and wind crushing nozzle 4. The slag tank 1 is placed above the diversion tank 2 with a certain slope, and the high-pressure air generated by the wind crushing fan 3 is in the lower part of the diversion tank 2. It is ejected from the blasting nozzle 4, and the outlet of the diversion groove 2 is inserted into the fluidized bed 10; the slag particle collision unit of the fluidized bed consists of a cold slag nozzle 7, a cold slag bucket 5, a slag sprayer 6, a fluidized bed fan 8, and a fluidized bed Bed 10, air distribution plate device 9, slag bead chute 11, cold slag nozzle 7 is set at the lower part of wind crushin...

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PUM

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Abstract

The invention belongs to the field of energy recycling, and particularly relates to a recycling system of blast furnace slag heat in the metallurgical and steel industries. The recycling system of blast furnace slag heat comprises a pelletizing unit, a fluidized-bed slag particle collision unit, an air heat exchange unit, a superheated steam recovery unit, a deslagging unit. The pelletizing unit comprises a slag trough, a guide trough, an air-quenching fan, and an air-quenching nozzle. The slag trough is disposed above the guide trough at certain inclination. High-pressure air generated by the air-quenching fan on the lower portion of the guide trough is sprayed from the air-quenching nozzle, and an outlet of the guide trough is inserted into a fluidized bed. The recycling system of blast furnace slag heat has the advantages that the pelletizing efficiency is high, mutual adhesion of slag particles is reduced and the like.

Description

technical field [0001] The invention relates to the field of energy recovery and utilization, in particular to a blast furnace slag heat energy recovery system in metallurgy and iron and steel industries. Background technique [0002] The iron and steel industry provides important basic raw materials for the development of the national economy, and is a resource-intensive industry that consumes a lot of energy and resources. While producing steel products, a large amount of waste is also discharged, causing serious pollution to the environment. Although the iron and steel industry is a major energy consumer and pollutant discharger in the national economy, it is also one of the industries with great potential for energy conservation and emission reduction. Among them, recycling all kinds of waste heat is an important breakthrough for further energy saving in the iron and steel industry. [0003] Blast furnace slag is a by-product formed from gangue in ore, ash in fuel and ...

Claims

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Application Information

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IPC IPC(8): C21B3/06C21B3/08F27D17/00
CPCC21B2400/026C21B2400/062C21B2400/076C21B2400/08Y02P10/20Y02P10/25Y02W30/50
Inventor 葛加坤倪明亮
Owner SCIMEE TECH & SCI CO LTD
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