Grid Metals Boosts Nickel-Cobalt Recovery from Mayville

- May 8th, 2019

Grid Metals gave an update on metallurgical testwork being done on samples from the company’s Mayville deposit, which saw growth in nickel-cobalt recovery from bulk concentrate.

Grid Metals (TSXV:GRDM,OTC Pink:MSMGF) gave an update on metallurgical testwork being done on samples from the company’s Mayville deposit, which saw growth in nickel-cobalt recovery from bulk concentrate.

Highlights from the press release are as follows:

  • A medium grade Mayville sample, selected by Grid Metals, grading 0.48 percent copper; 0.24 percent nickel, 0.02 percent cobalt was subjected to a laboratory scale flotation program of rougher and cleaner flotation. The best performing bulk concentrate achieved (Float 7), contained a copper/nickel grade of 23 percent with a cobalt grade of 0.40 percent. The mineralogical composition was 19 percent pentlandite, 47 percent chalcopyrite, 22 percent pyrrhotite and 13 percent non-sulphide gangue.

  • Recoveries to the bulk concentrate were nickel 69.8 percent, copper 90.1 percent, cobalt 51.7 percent and palladium 64.2 percent. The iron-S/Pn ratio was reduced from 11:1 in the feed to 1.34:1 in the concentrate, which is at a level considered acceptable for a bulk concentrate.

  • Preliminary precious metals analysis suggest precious metals (palladium – platinum – gold) are being upgraded and recovered.

  • The mineralogical character of the bulk concentrates produced from the sample are considered favourable for making marketable nickel and copper concentrates.

Click here to read the full press release from Grid Metals.

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