Kenorland Minerals Ltd. (TSXV: KLD | OTCQX: KLDCF | FSE: 3WQ0) has announced the results of additional metallurgical testing of the Regnault gold system on the Frotet project in northern Quebec, Canada; held under joint venture with Sumitomo Metal Mining Canada Ltd.
The study highlights included optimized recoveries of up to 93.3% Au and 90.5% Ag. Those recovery rates are higher than the initial study baseline conditions. Additionally, the material from the original programme were crushed and mixed, giving a composite head grade of 15.9g/t Au and 24.0g/t Ag.
The preliminary metallurgical study at Renault began in July 2022, with the completion of drill hole 22RDD149 at 29.2m at 16.61g/t Au including 9.9m at 44.89g/t Au. The objective was to characterize the amenability of cyanide extraction of Au and Ag. Results of the study indicated promising Au-Ag recoveries and identified additional steps to further maximize recovery.
The follow up study investigated the effects of gravity separation prior to cyanide leaching, flotation prior to cyanide leaching, finer grinding, and the use of an activator to increase reaction kinetics during cyanide leaching.
When comparing the different flowsheet options investigated for the Regnault style ore, the highest recoveries were realized with optimized whole ore leaching, with 93.3% Au and 90.5% Ag recovered. Combined gravity separation and cyanide leaching were 90.0% for Au and 90.6% Ag.
Flotation testing when combined with gravity separation and cyanide leaching were lower than whole ore leaching, at 83.7% Au and 82.1% Ag. Compared to the whole ore leaching process the amount of cyanide contact material that would be reduced by flotation is 5.8% and cyanide consumption is reduced by 65.0%.
These results indicate that the Regnault style ore is amenable to conventional cyanide leaching with recoveries of up to 93.3% Au and 90.5% Ag.
For further information, please visit: www.kenorlandminerals.com
To read more articles like this, please visit: www.theassay.com
