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PROCESSING

Envirogold files refractory ore patent

Process uses a two-stage acid leach with one-hour acid residency times

Noel Dyson
Patent is a 'significant milestone' for the company

Patent is a 'significant milestone' for the company

Called the NVRO Process it uses a two-stage acid leach with one-hour acid residency times in which the acid is a catalyst so little of the acid is consume in the reaction. An acid recycling circuit serves...

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