TABLE OF CONTENTS The information in this appendix is given as guidance to typical ranges of values for the variables required in filter cycle calculations and simulations. These are suitable for most calculation purposes but some values may represent the extremes of what is reasonable in practice. The reader should also be aware that some combinations of variables will yield unrealistic results. For example, on a belt filter cycle comprising filtration and single washing and deliquoring phases, a total belt length of more than 190 m will occur if the extremes of all phase lengths are taken. Such a scenario is clearly unrealistic and additional constraints are imposed in these cases.
Variables below are arranged according to basic properties, parameters specific to potential phases in a cycle and parameters specific to individual types of filters and presses.
Filtrate and wash liquid density: ? l and ? w = 700 ?1800 kg m ?3
Filtrate and wash liquid viscosity: ? l and ? w = 0.0001 ?100 Pa s
Filtrate and wash liquid surface tension: ? = 0.008 ?0.1 N m ? 1
Gas viscosity: ? a = 1 10 ?5 ?3 10 ? 5 Pa s
Solute concentration in feed/filtrate: 
? 0 kg m ?3
Solids density: ? s = 700 ?5000 kg m ? 3
Solute concentration in wash liquid: 
? 0 kg m ? 3
Solute diffusivity:
