Hi Friends,
In earlier post we have presented the Material flow balance for Bauxite grinding and Pre-Desilication Units. In continuation to the earlier post, we are presenting here with the material flow balance for digestion and slurry flashing circuit for 1.0 Mtpa Alumina refinery.
In this flow balance presentation, only main streams have been presented with calculated figures based on chemical engineering principles. Calculations for all these figures definitely require the fair knowledge of process circuit and related basic process parameters adopted for steady operation of Alumina refinery.
Please put your views / suggestions / remarks / comments, if any.
Regards.
Kunwar Rajendra
Please put your views / suggestions / remarks / comments, if any.
Regards.
Kunwar Rajendra
How can the residence time be increased in the precipitation circuit? What is the reliable time?
ReplyDeleteIn two stage continuous precipitation circuit, 40 hrs has been found to be the optimum residence time (Reliable time)for the productivity figure of about 90 gpl alumina. There are two ways to increase the residence time in precipitation cicuit-
ReplyDelete1. Take more number of tanks in circuit
2. Increase concentration profile for same plant capacity.
Regards.
Kunwar Rajendra