QUEST SIMPLIFIED PROCESS FLOWSHEET. Quest's improved hydrometallurgical process has the potential to produce a high purity mixed rare earth oxide without technically complex, risky and costly solvent extraction circuits. The key step in the new process is the selective thermal sulphation (STS).
Process flowsheeting is the use of computer aids to perform steadystate heat and mass balancing, sizing and costing calculations for a chemical process. It is an essential and core component of process design. The process design effort may be split into three basic steps synthesis analysis and optimization.