Conservation of iron and lime bearing raw materials by recycling of basic oxygen furnace (BOF) sludge in iron ore sintering

2012 ◽  
Vol 15 (3/4/5/6) ◽  
pp. 220
Author(s):  
A.K.P. Singh ◽  
M.T. Raju ◽  
Usha Jha

2017 ◽  
Vol 148 ◽  
pp. 12-22 ◽  
Author(s):  
Zhiyun Ji ◽  
Min Gan ◽  
Xiaohui Fan ◽  
Xuling Chen ◽  
Qiang Li ◽  
...  




2016 ◽  
Vol 38 (1) ◽  
pp. 36-46 ◽  
Author(s):  
D. Fernández-González ◽  
I. Ruiz-Bustinza ◽  
J. Mochón ◽  
C. González-Gasca ◽  
L. F. Verdeja


2021 ◽  
Vol 13 (12) ◽  
pp. 6536
Author(s):  
Yanrong Zhao ◽  
Pengliang Sun ◽  
Ping Chen ◽  
Xiaomin Guan ◽  
Yuanhao Wang ◽  
...  

In this paper, a new method of basic oxygen furnace (BOF) slag component modification with a regulator was studied. The main mineral was designed as C4AF, C2S and C3S in modified BOF slag, and the batching method, mineral compositions, hydration rate, activation index and capability of resisting sulfate corrode also were studied. XRD, BEI and EDS were used to characterize the mineral formation, and SEM was used to study the morphology of hydration products. The results show that most inert phase in BOF slag can be converted into active minerals of C4AF and C2S through reasonable batching calculation and the amount of regulating agent. The formation of C4AF and C2S in modified BOF slag is better, and a small amount of MgO is embedded in the white intermediate phase, but C3S is not detected. With the increase in the CaO/SiO2 ratio in raw materials, the CaO/SiO2 ratio of calcium silicate minerals in modified BOF slag increases, the contents of f-CaO are less than 1.0%, and the activity index improves. Compared with the BOF slag, the activity index and exothermic rate of modified BOF slag improved obviously, and the activity index of 90 days is close to 100%. With the increase in modified BOF slag B cement, the flexural strength decrease; however, the capability of resisting sulfate corrode is improved due to the constant formation of a short rod-like shape ettringite in Na2SO4 solution and the improvement of the structure densification of the hydration products.





2015 ◽  
pp. 107-111
Author(s):  
Gennadiy Podgorodetskiy ◽  
Vladislav Gorbunov ◽  
Andrey Panov ◽  
Sergey Petrov ◽  
Sergey Gorbachev




2021 ◽  
Vol 106 ◽  
pp. 44-53
Author(s):  
Kailong Zhou ◽  
Xin Chen ◽  
Min Wu ◽  
Yosuke Nakanishi ◽  
Weihua Cao ◽  
...  


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