Slurry

A slurry is a thin sloppy mud or cement or, in extended use, any fluid mixture of a pulverized solid with a liquid (usually water), often used as a convenient way of handling solids in bulk. Slurries behave in some ways like thick fluids, flowing under gravity but are also capable of being pumped if not too thick.

Examples of slurries include:

To determine the percent solids (or solids fraction) of a slurry from the density of the slurry, solids and liquid

where

In aqueous slurries, as is common in mineral processing, the specific gravity of the species is typically used, and since ${\displaystyle SG_{water}}$ is taken to be 1, this relation is typically written:

even though specific gravity with units tonnes/m^3 (t/m^3) is used instead of the SI density unit, kg/m^3.

To determine the mass of liquid in a sample given the mass of solids and the mass fraction: By definition

therefore

and

then

and therefore

where

Equivalently

and in a minerals processing context where the specific gravity of the liquid (water) is taken to be one:

So

and

Then combining with the first equation:

So

Then since

we conclude that

where

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