RE: Q4 Activities Report4 Aug 2017 02:09
Devonwolf,
here are my thoughts re the current state of affairs. I hope they complement yours.
Regarding "high ranking officials'" commments about a "massive turnaround" over whatever time frame I would like to remind everybody of what such "high ranking officials" had said 13 months ago: "Consequently, Wolf and GRES are discussing a work program involving equipment changes and design improvements aimed at [b]achieving continuous operation at capacity[/b], enhancement of recoveries and general plant improvements. Production improvements are expected during implementation of the program, however completion of all elements of the program [expected in the first half of 2017] is required before the full impact on processing plant performance can be ascertained." (30.06.2016, the part in brackets was added in a later version, i.e. in the Sept. quarterly report)
13 months later the plant is running at 51% throughput (target is 100%) and 28,8% recovery (target is 58%). So much for their command of the crystal ball!
According to the BFS the plant was built for treating 3Mtpa (5,5 days per week operation). Since last fall it has been running 24/7 which puts capacity at 3,818Mtpa or 955ktpQ. In fact throughput in the June quarter was 490,297t, hence 51,4% of capacity.
Head grade was 0,22% WO3 * 490kt ore treated means 107.865 MTU were present in the ore treated. Actual production was 30.996MTU, hence 28,75% of the WO3 in ore has been recovered. Wolf's target for recovery in soft granite is 58% so they came up 50,4% short.
The BFS predicted "Plant ramp up in throughput & recovery over 6 month period." (Page 9)
The fact, however, is this: 21 months after handover the plant is running at 51,4% of nameplate throughput, at 49,6% of planned recovery rates and 25,4% of planned production (@0,22% head grade). That is, frankly, a full-blown disaster.
The company stresses these numbers were an improvement of 7% (throughput) and 15% (production) over the first calendar quarter but that doesn't take into account the fact that there have been two major plant shutdowns during the March quarter and none during the June quarter. Adjusted for 12 days of standstill, Q1 throughput would have come in at 530.460t and production would have been 31.042MTUs, both [b]better[/b] than the June quarter numbers.
The silver lining is trial production results. Average daily throughput in week 4 of June was 9927t. That‘s a surprising 94,6% of nameplate capacity! I would like to caution everybody that we don‘t know what recoveries have been achieved during this time of high throughput (presumably lower than the June quarter average). But nevertheless it demonstrates the plant is basically able to handle that amount of material which provides a glimmer of hope to me. Given these guys‘ track record though, I remain cautious. (tbc)