Aggflow is good for the simulation of aggregates or solids material flow for processes such as material handling, screening, crushing, etc. It is not recommended for complex processes containing slurries and thermodynamics. METSIM is good for both material handling and process plant (mill, flotation, hydromet, pyromet). It does good heat and mass balance. But METSIM is not used in coal processing. LIMN is popular in coal processing and is now getting popularity in milling, hydromet, and pyromet.
Aggflow can be used for flowsheet design, review and optimization for aggregate and solid crushing and material handling plants. Also sand washing and classification equipment features makes it a complete package. Very useful and handy to use.
Visit on Aggflow site and you will get further details.