Centrifugation in a Hydrocyclone: Mat. Balance Tab (Based On Body Diameter)

This tab appears on the interface dialog of the Hydrocycloning operation (see Centrifugation in a Hydrocyclone) when the option to size the equipment based on body diameter is selected through the Equipment tab of the Hydrocyclone that hosts this operation (see Hydrocyclone: Equipment Tab).

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range:

Variable	Default Value	Range

○ Removed ? Check this box to indicate that the corresponding pure component is set to be removed. If a pure component is set to be removed, then the corresponding liquid/solid phase amount in the feed stream is assumed to consist of high density liquid/solid particles, which will end up mainly in the underflow.	No	Yes/No
○ Removal % The mass percentage of the liquid/solid amount of the corresponding pure component in the feed stream that ends up in the underflow.	0.0	0 – 100
● Overall Removal Efficiency (%) The overall separation (or recovery) efficiency of the cyclone.	0.0	Positive
● Particle Concentration in Feed (% v/v) The percentage of the liquid/solid volume flow rate of those pure components of the feed stream that are set to be removed to the total liquid/solid volume flow rate of the feed stream.	0.0	0 – 100
◙ Particle Concentration in Underflow (% v/v) The percentage of the liquid/solid volume flow rate of those pure components of the underflow that are set to be removed to the total liquid/solid volume flow rate of the underflow.	20.0	0 – 100
◙ Particle Mass % in Underflow The percentage of the liquid/solid mass flow rate of those pure components of the underflow that are set to be removed to the total liquid/solid mass flow rate of the underflow.	0.0	0 – 100
● Particle Concentration in Overflow (% v/v) The percentage of the liquid/solid volume flow rate of those pure components of the overflow that are set to be removed to the total liquid/solid volume flow rate of the overflow.	0.0	0 – 100
● Underflow/Throughput Flow Ratio (v/v) The ratio of the liquid/solid volume flow rate of the underflow to the liquid/solid volume flow rate of the feed stream.	0.0	Positive

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Specification Choices / Comments

The following list describes the available specification choices in this tab; for more details on how these are implemented, see Centrifugation in a Hydrocyclone: Modeling Calculations.

•Particle Removal Data...

Specify which components consist of solid particles by checking the ‘Removed ?’ option next to each component. If the Particle Removal is Set by User, you must also specify the Removal % for each of these components. If the Particle Removal is Calculated, the Removal % of these components is calculated by the program.

•Liquid Removal Options...

If the equipment size is calculated (design mode), you can choose among two options for specifying the amount of liquid that is recovered in the underflow. You can either specify the Particle Concentration In Underflow (expressed as volume %) or the Particle Mass % In Underflow.

If the equipment size is set by user (rating mode), the above options are not used. The Particle Concentration In Underflow, as well as the Particle Mass % In Underflow, are calculated by the program.