ABC: Assay Based Controls are changes made to regulatory setpoints that are biased on the level or changes in the level of the valuable metal being recovered. ABC Circuit: A two-stage grinding circuit composed of an autogenous mill, a ball mill and a crusher. Abrasion: Wearing away by rubbing or friction. Acicular: Having the … Read more
For design purposes, you need an estimation or prediction of your SAG Mill’s tonnage; well, there are 3 ways to generate good rock “ore” hardness testing data for SAG and ball mill circuit grindability from half drill core. We can abbreviate the discussion by saying there are three “faiths” of grinding, and there are small-scale tests … Read more
A Mesh to Micron Conversion Table can be made using this screen scale as its base with an opening of 0.0029 in. which is the opening in 200 mesh 0.0021 in. wire, the standard sieve as adopted by the Bureau of Standards of the U. S. Govt., the openings increasing in the ratio of the … Read more
Here is a home-made tool to measure or obtain a fingerprint of your SAG and Ball Mill Liner wear pattern/profile. Each time you shut down, get a profile and build a wear-life over time database to better predict your next reline job or monitor improvements to your liner design. Simple Tool to Track Liner Wear … Read more
Here’s a video is about how gold is produced according to the Newmont Mining Corporation. It provides information on the whole process of acquiring gold. You may be able to see how it is extracted especially that gold deposits these days are certainly hard to find. Unlike in the earlier era, mined gold these days … Read more
Using Laboratory bench-top float test results and their retention (flotation) time to scale-up to real life full scale plant time can be done using the following tables and examples. How to select the proper scale-up factor takes experience and …. good data. Figure 16.7 was used and seen in the a technical report for the Pebble … Read more
To generate a limiting grade-recovery curve, three points are shown for each mineral. The left most end point of the curve represents the feed grade of the composite. The middle point of each curve represents the concentrate grade produced when all of the particles bearing target mineral are recovered. The far right end point represents the … Read more
