Recovery, Utilization and Research of Waste Heat from the Blast Furnace Water Granulated Slag

2012 ◽  
Vol 512-515 ◽  
pp. 1205-1211 ◽  
Author(s):  
Fang Ming Wang ◽  
Xue Song Li ◽  
Yang Wang
Keyword(s):  
Power Generation ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Sea Water ◽  
Waste Heat ◽  
Water Desalination ◽  
Granulated Slag ◽  
Furnace Slag

To make use of waste heat of water quenching for blast furnace slag in production, this paper introduces and then analyzes some ways of waste heat recovery is used to power generation, sea water desalination and heating, in particular, indicates that the form of indirect heating of graining tower steam recycling equipment is the best most application and extension.

The Experimental Study of Molten Blast Slag Dry Granulation

2011 ◽  
Vol 356-360 ◽  
pp. 1882-1885 ◽  
Author(s):  
Yang Min Zhou ◽  
Chao Li ◽  
Li Li Xu ◽  
Si Yi Luo ◽  
Chui Jie Yi
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Particle Diameter ◽  
Test Bed ◽  
Dry Granulation ◽  
Furnace Slag ◽  
Slag Waste

Based on the comprehensive experimental test-bed of blast furnace slag waste heat recovery, we study the impacts which are caused by the changes of the key parameters, such as blast furnace slag discharged temperature, the speed of the granulation device, on the particle diameter distribution and sphericity, so as to master the best operating parameters of the blast furnace slag dry granulation, and provide experimental basic materials for blast furnace slag waste heat recovery. The results show that: when the discharged temperature of the blast furnace slag is controlled in 1400°C～1450°C, and the speed of the granulation device is controlled above 2000r/min, the sphericity is better, and 80% of the particle’s diameter will be 2～5mm.

Waste Heat Recovery from Blast Furnace Slag by Chemical Reactions

JOM ◽  
2012 ◽  
Vol 64 (8) ◽  
pp. 997-1001 ◽  
Author(s):  
Yuelin Qin ◽  
Xuewei Lv ◽  
Chenguang Bai ◽  
Guibao Qiu ◽  
Pan Chen
Keyword(s):  
Blast Furnace ◽  
Chemical Reactions ◽  
Blast Furnace Slag ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Furnace Slag

scholarly journals Combining theory and experiment analysis in molten BFS waste heat recovery integrated with coal gasification

2019 ◽  
Vol 118 ◽  
pp. 01045
Author(s):  
Wenjun Duan ◽  
Yunke Gao ◽  
Qingbo Yu ◽  
Zhimei Wang
Keyword(s):  
Blast Furnace Slag ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Coal Gasification ◽  
Molten Slag ◽  
Waste Heat ◽  
Coal Particles ◽  
Gasification Efficiency ◽  
Furnace Slag ◽  
Slag Waste

A novel method that a heat recovery system from blast furnace slag integrated with coal gasification reaction to generate syngas was proposed. The motion characteristic and critical velocity of the coal particles in the molten slag were estimated. Meanwhile, the effects of temperature and steam to coal ratio on coal gasification product distribution and gas characterization were discussed. The results showed that the coal particles (~75 μm) would break through the bondage of bubbles and transport into molten slag when the velocity of coal particles were above 4.20 m·s-1 and the diameter of bubbles were less 6 mm. There had higher gasification efficiency, gas yield production and H2 production by this method. The results suggested that the optimal conditions for slag waste heat recovery were achieved at 1623 K and steam to coal ratio of 2.0. Under these conditions, the gas yield and carbon conversion reached 133.48 mol·kg-1 and 97.81%, respectively. The proposed method enhanced the coal gasification efficiency and recovered the high quality of molten blast furnace slag waste heat effectively, and had important guidance for industrial manufacture.

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