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NIAflow is used to design new mineral processing plants as well as optimize existing plants. Applying machine-specific parameters, the software computes the material flow through entire plants and provides product forecasts. Based on these results, process layout and machinery setup can be evaluated. NIAflow is a product of Haver & Boecker.
The first step in the sequence leading to the construction of a process plant and its use in the manufacture of a product is the conception of a process. The concept is embodied in the form of a "flow sheet". Process design then proceeds on the basis of the flow sheet chosen.
Gold occurs principally as a native metal, i.e., gold itself.Sometimes it is alloyed to a greater or lesser extent with silver, which is called electrum.Native gold can occur as sizeable nuggets, as fine grains or flakes in alluvial deposits, or as grains or microscopic particles (known as colour) embedded in rock minerals.
First gold produced from the underground mine was in the fourth quarter of 2004. [10] In 2005, open cut mining continued in the high-grade areas in the first half of the year, then onto the lower grade northern section of the pit from the third quarter. Open pit ore was supplemented in the processing plant by higher grade underground ore.
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Arkansas is part of what's known as the Smackover Formation, a relic of a 200-million-year-old sea that covered parts of Arkansas, Louisiana, Texas, Alabama, Mississippi, and Florida.
The gold processing plant at Phoenix, a mine abandoned in 1953, 20 kilometres (12 mi) south the North Royal Open Pit and 2 kilometres (1.2 mi) from the closed down Regent Shaft, uses conventional milling and carbon-in-leach technology to recover gold. Process water is obtained from a bore-field for the mining operations.