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Effect of Fused Silica Flour Particle Size Distribution on Slurry and Shell Properties

Slurry and shell properties were measured using various fused silica flour distributions. Slurry rheology was measured with a Brookfield viscometer. Slurry and shell properties are improved when finer flour and broader distribution flour is used in place of narrow or coarse flour alone.

The manner in which a slurry flows, coats, and drains is referred to as slurry rheology. This behavior is an important characteristic of the slurry and affects the properties of shells made from these slurries. Slurry rheology can be measured with a Brookfield viscometer. Zhan cups are excellent for everyday control of viscosity, but for measuring the complex characteristics of nonNewtonian fluids, they are inadequate.

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