Summary Nickel laterite deposits in the Sorowako and Petea area are generally classified into two main types West Block and East Block types depending upon the nature of bedrock the level of serpentinisation ease of mining size of boulders degree of fracturing of the bedrock optimum screen fraction that carries nickel grades and the silica to magnesia ratios in the
·The 850 kt of nickel mined by the top 10 nickel mining companies is worth around $ with both production and price expected to grow alongside nickel demand
·Traditional nickel smelting and refining results in the concentrate producer only receiving 70% 75% of the contained nickel value with the balance captured by the smelter/refiner as most nickel mines have few smelting options which
·Mine grades as 1% nickel are now viable whereas only a few years ago grades below % Nickel were often not viable For sulfide ores underground mining and concentrator operations become profitable with combined nickel copper and cobalt content above 2% Surface mining operations tend to be profitable when the combined content of these
·Macquarie estimates that average Indonesian grades have declined to about % nickel from a range of % to % previously and contain a lot more impurities By contrast Philippine ore is low
The Durkin North orebody Durkin North is an unmined nickel deposit located beneath and to the north of the historical Durkin mine workings part of the Otter Juan Otter mine There are two mining areas in the Durkin North mine plan being the D1/D2 area and the D3/D5 area
·However these metals are not infinite and the average ore grades in mines have been decreasing in recent decades This study examines energy consumption as a function of ore grade decline for Nickel Cobalt and platinum group metals PGMs using simulations created with HSC Chemistry software Nickel Ni cobalt Co and platinum
·grades typically in the range of 8% to 12% nickel with a historical production of 130Kt of nickel metal at an average grade of % nickel although this lower grade was representative of the mining methodbulk used at the time The resource estimation comprised unmined mineralisation between 1300m 1600m below surface Underground mining
·outcrop samples continues to depth with higher grade nickel near surface 21VAN 001 101 m at % DTR nickel % total nickel starting at an approximate vertical depth of 27 m among the 8 highest grading near surface intervals in the history of Decar 22VAN 016 427 m at % DTR nickel % total nickel starting at an
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