of a slurry from the density of the slurry, solids and liquid
:where
: is the solids fraction of the slurry (state by mass)
: is the solids density
: is the slurry density
: is the liquid density

In aqueous slurries, as is common in mineral processing, the specific gravity of the species is typically used, and since specific gravity of water is taken to be 1, this relation is typically written:
:even though specific gravity with units tonnes/m³ (t/m³)