Slurry - Density

Slurry is a mixture of a solid and a liquid. The density of a slurry can be calculated as

ρ_m = 100 / [c_w / ρ_s  + [100 - c_w] / ρ_l]                                 (1)

where

ρ_m = density of slurry (lb/ft³, kg/m³)

c_w  = concentration of solids by weight in the slurry (%)

ρ_s =  density of the solids (lb/ft³, kg/m³)

ρ_l =  density of liquid without solids (lb/ft³, kg/m³)

Slurry concentration by weight can be measured by evaporating a known weight of slurry - and measure the weight of dried solids.

Example - Calculating Slurry Density

The density of a slurry where

• the density of the solids is 2500 kg/m³
• the density of the liquid is 1000 kg/m³
• the concentration of the solids is 30%

can be calculated as

 ρ_m = 100 / [(30 %) / (2500 kg/m³) + [(100 %) - (30 %)] / (1000 kg/m³)]

    = 1220 kg/m³

Slurry Density and Specific Weight Calculator

The density of a slurry can be calculated with the calculator below:

Water Slurries - Typical Specific Gravity and Slurry Solids Concentration

Specific Gravity of Water based Slurries

Specific gravity of water based slurries vs. specific gravity of the solid and consentration of the solid in the slurry:

Temperature ^oC
K
^oF

Length m
km
in
ft
yards
miles
naut miles

Area m²
km²
in²
ft²
miles²
acres

Volume m³
liters
in³
ft³
us gal

Weight kg_f
N
lbf

Velocity m/s
km/h
ft/min
ft/s
mph
knots

Pressure Pa
bar
mm H₂O
kg/cm²
psi
inches H₂O

Flow m³/s
m³/h
US gpm
cfm