Blogs
Rock Joint Strength – Shear Test
Table of ContentsDirect shear tests on irregular surfacesProperties of the model materialResults of testsDiscussion of results In this topic, we will present two important aspects of discontinuities, namely the roughness and shear strength. These two properties are critical when it comes to the stability of a rock mass in which these discontinuities are present and like for the intact rock,
Rock Strength Measurement
In this topic, we’ll present you some of the laboratory tests that can be performed to infer rock materials strength. It is important for you to know what type of tests can be done and what types of information we can gather from them.The simplest test to perform is the unconfined compression tests that will yield the unconfined compressive strengths.
Rock Compression
In topic one, we introduced stress and strain. These 2 variables are related because application of a stress results in a strain. In this topic, we will see how a specimen of intact rock responds when it is subjected to a simple compression. So, if we consider specimens, such as this one with flat ends, and we compress the specimen.
Mine Closure
Mining is a temporary land use, so having found, evaluated, designed, planned and operated that mine in a safe environmentally responsible way. It remains or us to tidy up, and then to hand the land over to some future productive use. There is a societal expectation that post mining the land will be returned to some former productive use. Commensurate
Bulk Material Handling – Conveying & Silos
After beneficiation we now need to focus on the storage handling, and transport of the mined product which can be ore or coal to get it to the customer. As the products of mining are mostly grain able materials that are handled by disciplined known as bulk materials handling, which is the specialty of the discipline of mechanical engineering. In
Flotation
This is an overview of setting up and conducting a flotation rate test. The test is a means of determining the flotation characteristics of an ore. It is conducted in a laboratory scale cell usually with a volume of two point five litres. The intention is to generate relationships of cumulative recovery, mass pull and grade versus time and use
Electrolytic Method for Recovery of Lead From Scrap Batteries & Tin
Low Temperature Properties of Tin and Tin-lead Alloys Add see Leaching and electrochemical recovery of copper, lead and tin from scrap printed circuit boards.
Coal Beneficiation Technology
So far in this module we’ve looked at how coal or minerals are found and how they are mined. In this topic we will look at the next step in the process that is upgrading the mining material to increase the concentration of the value of the component, before it is then transported to the customer. The process of upgrading
Environmental Impact Assessment
Mining operates under a social license, but its benefits should outweigh its negative impacts. Responsible mine operators accept this and they design their operations to be socially responsible. However to protect the environment and society against the negative impacts of mining regulatory frameworks are put in place to guide the assessment of mining proposals before mining commences. This framework set
How to Setup a Gold Sluice
So this is a typical sluice, they vary slightly in design but overall the same basic principles are at play. The point is gold is heavy, we’ve said that before but we can’t say it enough, gold is really, really, really heavy. So whenever it has a chance to, gold is going to drop faster than anything else in the
Zinc Copper Lead Gold & Silver Concentrate Marketing
https://www.911metallurgist.com/concentrate-marketing From the above explanation of the effect of the various constituents of ores on smelter practice, one can readily see that the maximum return is obtained when lead, copper or zinc concentrates are shipped to the respective plants which specialize in their treatment. For example, if you ship a lead-copper concentrate to a lead smelter, you will receive about
Sluicing for Gold – Set up & Operation
And my pan now, what I’m going to do is, I’m going you down to that stinking river I was telling you about, it’s got a little bit of gold in there, don’t ask me where it’s at, because I’m not going to tell you. I’m going to show you the proper way to set up this sluice box, do
Gold Geology
https://www.youtube.com/watch?v=56MrNa7vg18 For a bunch of his detailed information in the mines but I learned from him and since the class I’ve been out to his place a few times and so I have enough that I can present a Liberty gold lecture and now I have a Liberty Gold lecture for my class and it goes a little something like
Bacteria Leaching Low Grade Ores
USING BACTERIA to leach and recover a metal from any metallurgical raw material with a ferric sulphate sulphuric acid lixiviant has been patented by Kennecott. Kennecott Copper Corp. just recently obtained a U.S. patent on bacteria leaching of ores containing sulphides and/or iron sulphate. According to Stuart Zimmerley, director of research and one of the inventors, Kennecott found that several
Arsenic Recovery
The arsenic trioxide produced in roasting is collected in chambers, where it deposits on cooling, some 10,000 cu. ft. being allowed per ton of arsenious oxide per 24 hours. At South Crofty mine, Cornwall, these chambers are partitioned, so that the flue gases pass through some 400 ft., having a cross-section of 3 ft. by 6 ft. before going to
Macadamia Nut Cracker
This Macadamia Nut Cracker cost $US 2550 including shipping anywhere Canada/USA
Flotation Material Balancing Excel Solver: Mass Balance Calculations Example
For a flotation circuit, material balance calculations define an engineering problem where flow parameters between unit operations are partly known. The purpose of a material balancing is to mathematically examine the known flow parameters to solve for the unknown flow parameters. Two main types of material balances are commonly made: design material balance operating plant material balance. The design material