slag resistance
Recently Published Documents


TOTAL DOCUMENTS

76
(FIVE YEARS 15)

H-INDEX

10
(FIVE YEARS 2)

Author(s):  
Mengzhen Guo ◽  
Yonghe Liang ◽  
Manfei Cai ◽  
Jianhua Nie ◽  
Maoqi Ju ◽  
...  

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2277
Author(s):  
Cristian Gómez-Rodríguez ◽  
Yanet Antonio-Zárate ◽  
Josept Revuelta-Acosta ◽  
Luis Felipe Verdeja ◽  
Daniel Fernández-González ◽  
...  

This study investigates the corrosion mechanism on 100 wt.% MgO and 95 wt.% MgO with 5 wt.% nano-ZrO2 ceramic composites. First, MgO powder and powder mixtures (MgO + nano ZrO2) were uniaxially and isostatically pressed; then, they were sintered at 1650 °C. Corrosion by copper slag was studied in sintered samples. Physical properties, microstructure, and penetration of the slag in the refractory were studied. Results reveal that ZrO2 nanoparticles enhanced the samples’ densification, promoting grain growth due to diffusion of vacancies during the sintering process. Additionally, magnesia bricks were severely corroded, if compared with those doped with nano-ZrO2, mainly due to the dissolution of MgO grains during the chemical attack by copper slag.


Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 234
Author(s):  
Kunkun Cui ◽  
Yingyi Zhang ◽  
Tao Fu ◽  
Shahid Hussain ◽  
Tahani Saad Algarni ◽  
...  

Al2O3-Cr2O3 refractories are completely substitution solid solutions and can effectively resist slag erosion when used as an industrial furnace lining. In order to provide suitable chromium corundum refractory with excellent slag resistance and mechanical properties for smelting reduction ironmaking, Al2O3-Cr2O3 samples with different mass percentages (0, 10, 20, 30, 40 wt.%) of Cr2O3 were prepared by a normal pressure sintering process to study its sintering properties, mechanical properties, thermal shock resistance, and microstructure. The results of densification behavior showed that the introduction of Cr2O3 deteriorates the compactness, the relative density and volume shrinkage rate of the composite material decrease with the increase of the Cr2O3 content, and the apparent porosity increases accordingly. In terms of mechanical properties, the hardness, compressive strength, and flexural strength of Al2O3-Cr2O3 material decrease gradually with the increase of Cr2O3. After 10 and 20 thermal shock cycles, the flexural strengths of the samples all decreased. With the increase of Cr2O3 in these samples, the loss rate of flexural strength gradually increased. Considering the slag resistance and mechanical properties of the composite material, the Al2O3-Cr2O3 composite refractory with Cr2O3 content of 20–30% can meet the requirements of smelting reduction iron making kiln lining.


2021 ◽  
Author(s):  
Yunsong Liu ◽  
Enhui Wang ◽  
Linchao Xu ◽  
Tao Yang ◽  
Xinmei Hou ◽  
...  

Abstract Aiming to improve the slag resistance of calcium hexaaluminate (CA6), different amounts of AlON have been introduced into CA6 using two approaches, i.e. one-step and two-step methods. The results show that both the two phases of CA6 and AlON are uniformly distributed when sintered at 1650 °C for 2 h in flowing nitrogen using two-step method. The optimized amount of AlON addition is determined to be 10 wt%. In addition, the reaction test method is performed and CA6/AlON composite exhibits much better slag penetration and corrosion resistance compared with pure CA6. The effect of AlON is also discussed.


Author(s):  
Sergey A. Grizman ◽  
Natalia V. Marchenko
Keyword(s):  

Author(s):  
Mengke Qiao ◽  
Xiangcheng Li ◽  
Pingan Chen ◽  
Yingli Zhu ◽  
Boquan Zhu

2020 ◽  
Vol 46 (15) ◽  
pp. 24238-24247 ◽  
Author(s):  
Hao Liu ◽  
Chuang Jie ◽  
Zhoufu Wang ◽  
Zhongzhuang Zhang ◽  
Xitang Wang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document