q&a snippets from agm question time, page-43

Lambda,

The pipes have been modified! Whether that means they are fixed depends on whether they enable sustained operation at 11,000 t/a for LAMP Phase 1. The highlighted issues were clogging, wearing and ability to maintain design throughput. Whether they are fixed is an unknown that the company cannot definitively answer at this point in time. Suggestions are that capacity has been enabled for now.

The next issue of filter press clogging is likely an operational issue that will involve gradual improvement with tweaks to the feed solids concentration, temperature, filter aids, coagulants, flocculants, cloth pore size, pressure and/or cycle time. Some equipment modifications may also be required if the issues are related to material transport as for earlier stages of the process.

Alternatively, the upstream processing can influence the rate and extent of filtration and washing. If the grind size is smaller, this slows the filtration process significantly. Unfortunately, this is just one of the variables that moves around during regular operation.