Silver Bull Resources (SVB.TO, NYSEAMEX:SVBL) yesterday announced extremely positive metallurgical test results to the market.
The company reported average silver recovery of 83% at its 100% owned Sierra Mojada silver-zinc project in Mexico after conducting several bottle roll tests at a variety of silver grades. These preliminary results indicate that the higher the silver grade of the sample, the higher the recovery is and that even lower grade ore (containing 40-45g/t Ag) obtains a recovery rate of approximately 80%.
Silver Bull is currently examining if the SART-process can be used to recover some of the cyanide, zinc and copper after the first leaching period.
The company also conducted (pyro-)metallurgical test work on the recovery of zinc through roasting it in a rotary kiln to fume off the zinc and collect it as a Zn-oxide concentrate.
Tim Barry, CEO of Silver Bull Resources comments ‘we are extremely pleased with these preliminary results. As silver oxide deposits usually only have a recovery rate of 60%, our recoveries are really exceptional. We are now working on a new resource estimate which should be ready in Q1 2013 and we will release a Preliminary Economic Analysis shortly thereafter.’
Disclosure: The author holds a long position in Silver Bull Resources Inc. Please see our disclaimer for current positions.