scholarly journals Effect of Oily Sludge Treatment with Molten Blast Furnace Slag on the Mineral Phase Reconstruction of Water-Quenched Slag Properties

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7285
Author(s):  
Yuelin Qin ◽  
Ke Zhang ◽  
Xinlong Wu ◽  
Qingfeng Ling ◽  
Jinglan Hu ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Solidification Rate ◽  
Oily Sludge ◽  
Sensible Heat ◽  
Energy Transformation ◽  
Phase Reconstruction ◽  
Mineral Phase ◽  
Slag Properties ◽  
Furnace Slag

Blast furnace slag, which is the main by-product of the ironmaking process discharged at 1450 °C, contains high-quality sensible heat, while oily sludge is the main solid waste produced in the process of gas exploration, storage, and transportation. The energy and resource utilization of blast furnace slag is complementary to the environmentally friendly treatment of oily sludge, which has provided a new idea for the multi-factor synergistic cycle and energy transformation of the two wastes. The pyrolysis of the oily sludge with the molten blast furnace slag was conducted in the current paper. Results showed that the oily sludge was rapidly pyrolyzed, and the heavy metal elements in the oily sludge were solidified. The solidification rate of the heavy metals exceeds 90%, except for vanadium. The reconstituted water-quenched blast furnace slag still has good activity, and it will not affect the further use of the slag after pyrolysis (BFS-P).

Feasibility Study for the System of Coal Gasification by Molten Blast Furnace Slag

2010 ◽  
Vol 97-101 ◽  
pp. 2347-2351 ◽  
Author(s):  
Peng Li ◽  
Qin Qin ◽  
Qing Bo Yu ◽  
Wen Ya Du
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Heat Recovery ◽  
Coal Gasification ◽  
Hot Water ◽  
Environmental Benefits ◽  
Sensible Heat ◽  
Recovery System ◽  
Heat Recovery System ◽  
Furnace Slag

At present, molten blast furnace slag is quenched rapidly using a large amount of water to produce a glassy-granulated slag without any recovery of its much sensible heat, polluting water and atmosphere. To solve these problems, a new heat recovery system is proposed. This system consists of melting gasifier, the 2nd gasifier and boiler in order to achieve stepped energy using. The melting gasifier and the 2nd gasifier use the endothermic heat of gasification reaction instead of sensible heat to recover the energy of molten blast furnace slag. The possibility of the new heat recovery system is studied. The reactions in melting gasifier are studied using STA409PC thermal analyzer and HSC chemistry software. The economic and environmental benefits are calculated based on the heat and mass balances. The results indicate that this method is possible and better than conventional methods such as hot water or steam production. The molten BF slag acts as not only thermal media but also good catalyst. The efficiency of melting gasifier is high and without pollution. Besides, this method can bring huge economic and environmental benefits which are important to the survival and sustainable development of iron-steel enterprises.

Study on the Shrinkage of a Full-Scale Wall Made with Blast Furnace Slag Fine Aggregates

CONCREEP 10 ◽  
2015 ◽  
Author(s):  
Tomiyuki Kaneko ◽  
Keiichi Imamoto ◽  
Chizuru Kiyohara ◽  
Akio Tanaka ◽  
Ayuko Ishikawa
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Full Scale ◽  
Fine Aggregates ◽  
Furnace Slag

Influence of Melt Compounding on Blast Furnace Slag Filled PP Compounds: A Comparative Study

2017 ◽  
Vol 32 (4) ◽  
pp. 446-454
Author(s):  
A. Mostafa ◽  
G. Pacher ◽  
T. Lucyshyn ◽  
C. Holzer ◽  
E. Krischey ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Comparative Study ◽  
Blast Furnace Slag ◽  
Melt Compounding ◽  
Furnace Slag
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