High-temperature apparatus for chaotic mixing of natural silicate melts

2015 ◽  
Vol 86 (10) ◽  
pp. 105108 ◽  
Author(s):  
D. Morgavi ◽  
M. Petrelli ◽  
F. P. Vetere ◽  
D. González-García ◽  
D. Perugini
Keyword(s):  
High Temperature ◽  
Silicate Melts ◽  
Chaotic Mixing ◽  
Natural Silicate

Diffusivity, Solubility and Speciation of Sulphur in Silicate Melts

2006 ◽  
Vol 46 ◽  
pp. 93-97 ◽  
Author(s):  
J. Stelling ◽  
Harald Behrens ◽  
Joachim Deubener ◽  
Stefan Mangold ◽  
Joerg Goettlicher
Keyword(s):  
High Temperature ◽  
Electron Microprobe ◽  
Industrial Production ◽  
Silicate Melts ◽  
Viscosity Data ◽  
Decomposition Products ◽  
X Ray ◽  
Diffusion Couple Technique ◽  
X Ray Absorption ◽  
Diffusion Profiles

Diffusion and solubility of sulphur have important effects on the degassing of silicate melts. Both properties are closely related to the structural incorporation of sulphur in the melt. Depending on the oxygen fugacity, sulphur can be present as sulphide (S2-), sulphite (S4+) or sulphate (S6+). Sulphates play an important role in the industrial production of glasses especially in the fining process. The decomposition products of sulphate amass in bubbles which ascend and homogenize the melt. Structural incorporation of sulphur in glasses is studied by XANES (X-ray Absorption Near Edge Spectroscopy). Diffusion of sulphur is investigated in simple silicate systems using the diffusion couple technique. First diffusion profiles were measured in sodium trisilicate glasses by electron microprobe. The results indicate that sulphur diffusivity in high temperature melts is close to the Eyring diffusivity calculated from viscosity data.

Intrinsic Effect of Alkali Concentration on Oxidation Reactivity and High-Temperature Lubricity of Silicate Melts between Rubbed Steel/Steel Contacts

Langmuir ◽  
2020 ◽  
Vol 36 (27) ◽  
pp. 7850-7860 ◽  
Author(s):  
Sang T. Pham ◽  
Anh Kiet Tieu ◽  
Shanhong Wan ◽  
Jingcheng Hao ◽  
Hongtao Zhu ◽  
...  
Keyword(s):  
High Temperature ◽  
Silicate Melts ◽  
Alkali Concentration ◽  
Oxidation Reactivity ◽  
Intrinsic Effect
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