Gekko IPJ Coal Separator Value Addition in Coal Preparation

摘要

The Gekko IPJ Coal Separator (IPJ) is a mature technology that has not previously been applied to the coal industry. It efficiently processes a wide range (60 mesh to 1 ¼ inch or 0.25 to 32 mm) of particle sizes. The IPJ can efficiently process size fractions that include the smaller of those conventionally processed by dense medium cyclones (e.g., 6 × 0.5mm) and all of those typically processed by spirals or teetered bed separators (2 × 0.125mm). It therefore has potentially important applications that include: rn• Enable higher plant throughputs at minimal costs by increasing desliming apertures to 6mm (¼ inch) or higher rn• Scavenging misplaced coal in flotation tails • Reprocessing co-disposed areas at the disposal site prior to pumping to plant for flotation rn• Low cost but efficient processing of up to 32mm (1 ¼ inches ) particles for, e.g., direct power station feed rn• De-stoning rnPilot scale and preliminary plant test results are reported that include the effects of important operating variables.