Many raw sugar factories produce direct consumption (plantation white or blanco directo) sugars by single or double sulphitation. Around the world there is a move to produce high quality white sugars directly in raw sugar factories. The key buyers of these high quality sugar products, such as soft drink and confectionery manufacturers, demand lower levels of residual sulphur, ash and colour.
Flotation clarification, combined with sulphitation or other processes, provides a cost effective means to achieve high quality sugars directly from a raw sugar process, with minimal effect on the overall sugar make. This is achieved through removal of a significant proportion of suspended solids, colloidal impurities (turbidity), ash and colour.
It is difficult to quantify the financial benefits without knowing the throughput, sugar pricing scheme and local chemical cost details for a given client. SRI can provide an investment analysis if such details are provided. The investment analyses performed to date, for clients in Central America indicate a typical payback period from one to two grinding seasons.