Ball Mill Power Calculations
A nice and pretty sexy online Ball Mill Power-draw Calculator was put live by one of the great prophets of grinding. https://www.smctesting.com/tools/gross-power comes with all the related Online documentation prompting you to enter your basic mill data. The user interface offers Metric OR Imperial measurements for sizing SAG/AG and Ball Mills of overflow or grate type discharges.
Handheld XRF Spectrometer
Handheld XRF spectrometers are a fast, accurate, and portable tool that can be used for a variety of tasks in the mining industry. What is a portable spectrometer and how do you use one? A handheld “XRF gun” is an x-ray instrument used for chemical analyses. Shaped and sized similarly to a barcode scanner, the […]
GOLD AND SILVER ORES-THE PLATTNEF ANT SISS PROCESSES
Moly-Cop Tools – Download
Here you will find the Moly-Cop Tools Version 3.0 Download 1 and download 2 collection of Excel files. Also find 2 great little PDF ‘free’ courses at https://www.scribd.com/doc/155884044/Moly-Cop-Tools-1 and https://www.scribd.com/doc/214561051/MCTools-Basic-II https://www.arrium.com/
Specific Gravity to Density of Pulp or Slurry
As mill operators you don’t have to worry about the mathematics of a Specific Gravity to Density conversion. These specific gravities have all been worked out and are presented in a table form. You simply consult the line that represents the specific gravity of the ore that you are working with, match it with the dissecting line […]
How to Find and Determine the Specific Gravity of a Rock
In the method we use to How to Find and Determine Specific Gravity of Rocks (some call it Specific Density because they don’t know better!), we’ll use simple equipment. What is required to make this measurement is a weight scale, and the list of the different minerals SPECIFIC GRAVITIES. What specific gravity is, is the mass […]
THE BARRATT METHOD
Plants designed using The Barratt Method as published in the Book Mineral Processing Plant Design, Practice, and Control Proceedings, include: Alumbrera Batu Hijau Cadia (one consultant among others) Candelaria Clarabelle (Inco) Collahuasi (line 1 & 2) Dreifontein El Teniente SAG 1 Ernest Henry Esperanza Fimiston Freeport 95K expansion Lisheen Numerous benchmarking exercises to operating grinding […]
Effect Of Primary Grind Size On Mineral Liberation
The extrapolated ore fragmentation and copper sulphide liberation plots reveal that the liberation levels and hence the flotation responses of the minerals would be essentially constant across a broad range of flotation feed sizing. This observation would indicate that flotation feed sizing coarser than 200µm K80, the practical norm for copper porphyry ore processing worldwide, […]
Washability Curves
Heavy liquid data can also be interpreted by washability curves. To plot these curves, the axes shown here. The cumulative % wt. Floats or sinks is plotted against S.G. If the material consists of two minerals completely liberated from each other, the curve will be a stepped line. The width of the step indicates […]
Tromp Curve – Example of Partition Curve
As may be seen from the table, a separation at S.G. 2.75 would result in a float product of 68.5% of the weight contain 3.8% of the tin of that size fraction. Laboratory separations in heavy liquids are “ideal” – all the sinks should report to the sinks and all the floats to the floats. […]