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Viscosity measurement in the molten state of glass
It is a device commonly referred to as an internal cylinder rotational viscometer, which rotates an internal cylinder in a molten liquid within an outer cylinder container and measures the generated torque to determine the viscosity of glass.
For measuring the viscosity of slag and other materials from urban waste incineration plants.
For measuring the viscosity of molten salts in high-temperature conditions, there are methods such as the ball uplift method and the rotating cylinder method (inner cylinder rotation type and outer cylinder rotation type). This glass viscometer belongs to the outer cylinder rotation type, and it is a device that allows for the direct measurement of the torque generated on the inner cylinder (sensor) by rotating the outer cylinder using a load cell. Compared to conventional glass viscometers, it enables measurements that are closer to the absolute viscosity values. [Reference] Hiroshi Shiraishi, Takeshi Fujii: Report No. 1868 of the Tohoku University Steelmaking Research Institute (1991)
