Improving liquor flow and increasing filtrate clarity

THE OBJECTIVE

An Australian alumina refinery approached SOLAFT to see if we could develop a solution to enable them to use a cost effective readily available low quality bauxite, whilst not compromising Alumina quality.

THE ISSUE

The cheaper poor quality bauxite contained less gibbsite and more impurities. This decreased the effectiveness of processing the ore, was detrimental to filtrate solids and therefore refined alumina quality.

WHAT WE DID AND THE SOLUTION

SOLAFT’s highly qualified Technical Team worked tirelessly with the on-site engineer and maintenance manager.  After several years, multiple site visits and onsite pilot testing, SOLAFT custom engineered a multi-dimension high capture media. With this solution, the refinery was able to increase/maintain liquor flow whilst maintaining/improving filtrate clarity. The technical textile design addressed the complex issues resulting in changes to production with the poor raw material quality. The improved media allowed for greater uptime, and reduced operational costs.

OUTCOME

After successful trials, the benefits to the Alumina refinery include:

  • Maintained the previously low filtrate clarity
  • Greater filter throughput of 10% over the life of the filters