Slurry Calculator Help


The Paterson & Cooke Slurry Toolkit is a simple calculator of slurry properties. Use it to determine the concentration of the slurry if you know the density or vice versa. It is also a useful tool to determine slurry flow properties.

The toolkit is meant for use by engineers, technicians and students.


Below are a list of definitions for the Calculator.

% volume concentration: the ratio of volume of the solids to the total volume of the mixture.

% mass concentration: the ratio of the mass of the solids to the total mass of the mixture.

Solids density: the ratio of the mass of the solids to its volume occupied by the solids. Note do not confuse this with bulk density. The volume occupied by the solids in this case is the displaced volume.

Mixture density: the ratio of the mass of the mixture to its volume occupied by the mixture.

Mixture: a fluid consisting of solids and a liquid. This term is used interchangeably with slurry in this context.

Slurry: see Mixture.

Pipeline velocity: average fluid velocity inside the pipeline specified by the internal diameter.

Liquid flow rate: the volume flow rate of the liquid part of the mixture. This useful when calculating the amount of liquid (most often water) that is required to mix with a given amount of solids to make a mixture with a specific density.

How to use the toolkit

The Toolkit is broken up into two sections: the Slurry Parameter section (the upper block) and the Material Transfer Rates section (the lower block).

The Slurry Parameters section calculates the concentration and density of the mixture using the solid and liquid densities and the amount of solids present in the liquid as inputs.

The Mass Transfer Rates section uses the relationship between the solids and liquid that are calculated in the Slurry Parameters section to derive the mixture flow rate, liquid flow rate and pipeline velocity for a given dry tonnage rate and pipeline internal diameter.

The toolkit allows the user to select the most applicable unit from a drop-down list for mass and mixture flow rates as well as pipeline internal diameter specification.

The new values will be calculated as the cursor moves away from the input cell. To make sure that the table values have been updated, click on the Recalculate button at the bottom of the toolkit window.

Tip: Use the TAB button on your keyboard to move effortlessly from input cell to input cell.

Tip: To start a new calculation on a fresh screen click on the Reset button at the bottom of the toolkit window.


The example below takes you through a typical calculation step by step.