Influence of TiO2 on viscosity, phase composition and structure of chromium-containing high-titanium blast furnace slag

Ding Yang; Hanghang Zhou; Jian Wang; Zhengde Pang; Guishang Pei; Zhiming Yan; Hongxia Mao; Guibao Qiu; Xuewei Lv

Journal of Materials Research and Technology (May 2021)

Influence of TiO2 on viscosity, phase composition and structure of chromium-containing high-titanium blast furnace slag

Ding Yang,
Hanghang Zhou,
Jian Wang,
Zhengde Pang,
Guishang Pei,
Zhiming Yan,
Hongxia Mao,
Guibao Qiu,
Xuewei Lv

Affiliations

Ding Yang: Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Hanghang Zhou: Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Jian Wang: Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Zhengde Pang: Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Guishang Pei: Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Zhiming Yan: WMG, University of Warwick, Coventry, CV47AL, UK
Hongxia Mao: Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China
Guibao Qiu: Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Corresponding author.
Xuewei Lv: Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China

Journal volume & issue: Vol. 12
pp. 1615 – 1622

Abstract

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The viscous flow of CaO–SiO2–Al2O3–MgO–TiO2–Cr2O3 slag (CaO/SiO2 = 1.1, Cr2O3 = 0.5 mass%) were investigated to promote understanding of the effect of TiO2 addition on the viscous behavior of chromium-containing vanadium-titanium blast furnace slag. The viscosity of the slag was measured using a rotating crucible viscometer. Raman spectroscopy analysis was performed to correlate the viscosity to slag structure. The viscosity of slag was found to significantly decrease with increasing TiO2 content at a fixed basicity. It is because the Ti4+ continuously detached from the network structure, the content of [Ti2O6]4- decreased, and the content of [TiO4]4- tetrahedral monomer increased, which made the slag structure simplified. Consequently, the polymerization degree of the slag decreases with increasing TiO2 content. The variation in slag structure is consistent with the change in measured viscosity.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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