Assessment of industrial modules to design a GFMA process for cyanide recovery based on a phenomenological model

摘要: Cyanide recovery in the gold-mining industry is a crucial step terms of cost operation. Currently, process such as AVR (acidification, volatilization and recycling), based on packed towers for stripping absorption stages, addresses this issue with high levels investment operational costs. Gas-filled membrane (GFMA) emerges then an attractive alternative because stages can be performed single stage, reducing associated Despite advantages technology, applications at industrial scale are still emerging. A possible reason lack clear scaling-up methodologies where experimental data taken to select optimum hollow-fiber contactor module (HFMC). The present study proposes methodology adequately between available Liqui-CelTM modules design under optimal conditions. phenomenological model developed recovering cyanide by using GFMA process. Simulation employed recover process, both batch arrangement feed-flow rate, range 10–125 m3/h, showed that there no differences tested when they work same rate. criteria scale-up was determined: ensure performance different scales, length transfer unit (HTU) should kept capacities HFMC comprise equipment characteristics (mass-transfer area, stream velocities, mass-transfer coefficient values). Additionally, number commercial required treat 57 m3/h 250 ensuring 95% also determined. Finally, most profitable option (lower pressure drop cost) resulted use 14 × 40 module.