scholarly journals Effects of Coal Blend Type and Preheating Temperature in Coal Rapid Preheating Process on Coke Strength

2004 ◽  
Vol 90 (9) ◽  
pp. 656-660 ◽  
Author(s):  
Makoto MATSUURA ◽  
Masaki SASAKI ◽  
Kenji KATO ◽  
Yoshiaki NAKASHIMA
Keyword(s):  
Coke Strength ◽  
Coal Blend ◽  
Preheating Temperature

Coal blend properties and evaluation on the quality of stamp charging coke from weakly coking blends

2018 ◽  
Vol 115 (4) ◽  
pp. 421 ◽  
Author(s):  
Xue-yan Liu ◽  
Xing Han ◽  
Huan Cheng ◽  
Xi-Tao Yin ◽  
Rui Guo ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Temperature Dependence ◽  
Quality Indices ◽  
Coke Strength ◽  
Coking Coal ◽  
Iron And Steel ◽  
Coal Blend ◽  
Coking Properties ◽  
The Cost

Stamp charging coking can use weakly coking coal effectively, which can cut the cost for iron and steel enterprises. However, the quality of stamp charging coke has been debated due to lower CSR index. In this paper, the correlation between blend coking properties and quality indices of stamp charging coke is given out through statistical analysis of data from coking production, the effect of blend properties and stamping on the properties of stamp charging coke is estimated through microstructure, and the strength after reaction of stamp charging coke is evaluated through temperature dependence of reacted coke strength and BF smelting. The results show that the stamping permits to use the weakly coking blend with lower G index without impairing the M10 and M40 indices, but the CSR index is decreased. Meanwhile, the reason that the stamp charging coke with lower CSR index can also be used smoothly in BF is presented. The present works are significant to guide the blending of increasing weakly coking coal and evaluate reasonably the quality of stamp charging cokes.

Influence of rejuvenator preheating temperature and recycled mixture’s curing time on performance of hot recycled mixtures

2021 ◽  
Vol 295 ◽  
pp. 123616
Author(s):  
Mingchen Li ◽  
Liping Liu ◽  
Chengwei Xing ◽  
Lingxiao Liu ◽  
Huayu Wang
Keyword(s):  
Curing Time ◽  
Preheating Temperature

Effects of the Parameters of Sloping Plate Process on Microstructures of A2017 Alloy

2012 ◽  
Vol 503-504 ◽  
pp. 342-345
Author(s):  
Ren Guo Guan ◽  
Zhan Yong Zhao ◽  
Chao Lian ◽  
Run Ze Chao ◽  
Chun Ming Liu
Keyword(s):  
Grain Size ◽  
Nucleation Rate ◽  
Casting Temperature ◽  
Plate Length ◽  
Preheating Temperature ◽  
Semisolid Forming ◽  
Coarse Microstructure ◽  
Sloping Plate

In this paper, effects of the parameters of sloping plate process on microstructures of A2017 alloy were investigated, and semisolid ingot of A2017 alloy was prepared. The grain size of the ingot prepared by the wavelike sloping plate is much smaller than that prepared by the flat sloping plate. The primary grain becomes rounder and smaller with the increment of the sloping plate length. High preheating temperature of the plate reduces the nucleation rate of the melt and leads to coarse microstructure. When the casting temperature is 720°C, the sloping angle is 45°, and the wavelike plate length is between 400mm and 500mm, semisolid ingot of A2017 alloy with fine and homogeneous microstructures can be obtained. The reheated microstructure of semisolid ingot is mainly composed of spherical solid grains and the melted liquids and is suitable for semisolid forming.

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