Slurry  Density
Calculate density of a slurry.
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/ft^{3}, kg/m^{3})
c_{w }= concentration of solids by weight in the slurry (%)
ρ_{s} = density of the solids (lb/ft^{3}, kg/m^{3})
ρ_{l} = density of liquid without solids (lb/ft^{3}, kg/m^{3})
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/m^{3}
 the density of the liquid is 1000 kg/m^{3}
 the concentration of the solids is 30%
can be calculated as
ρ_{m} = 100 / [(30 %) / (2500 kg/m^{3}) + [(100 %)  (30 %)] / (1000 kg/m^{3})]
= 1220 kg/m^{3}
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
Product  SG  Stypical Solids Concentration  

% weight  % volume  
Coal  1.40  45  55  37  47 
Copper concentrate  4.30  60  65  26  30 
Gilsonite (asphalt, bitumen)  1.05  40  45  39  44 
Iron ore  4.90  
Iron sands  1.90  
Limestone  2.70  60  65  36  41 
Magnetite  4.90  60  65  23  27 
Sand  2.65  43  23  30 
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:
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