Carlin Style Mineralisation Deposit Examples
This section on Carlin Style Mineralisation Deposit Examples will give you a quick run through of a couple of actual Carlin deposits to give an idea of their characteristics; we will begin with Barrick’s goldstrike deposit, it’s in the north of the Carlin trend. Gold strike is the mother and father of Carlin deposits and is responsible […]
Flotation Simulation & Modelling Software to Improve Grade & Recovery Metallurgy
In this video EMC Supasim flotation simulation program is used to simulate the performance of a copper lead zinc plant in southern Spain. Flotation kinetics of key streams are generated by conducting bench scale rate tests on either a laboratory prepared sample of mill feed or grab samples of pulp taken from the plant. And […]
How to Perform a Laboratory Flotation Test
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 […]
Fire Assay Procedure
Fire assaying has been practiced since ancient times and has proven to be very reliable in the determination of precious metals. References to fire assaying are found in the old testament of the Bible and artifacts in past civilizations’ ruins. Assaying began to appear in French and English literature in the 12th century and from […]
Mesothermal and Greenstone Gold Deposits AKA Orogenic Geology Formation
Mesothermal gold deposits form half way up through the rise of the melt from the deep crust to the surface usually at a depth of less than 10 km but greater than 1 km. temperatures at these depths are generally somewhere between 450 degrees and 250 degrees Celsius. The term mesothermal veins is really a […]
Mercury Ore Processing Plant (Mining)
The Abbott mercury mine and mill are situated at an elevation of 2,000 feet in Lake County, California, approximately 24 miles west of Williams on State Highway 20 towards Clear Lake. Williams, which is served by the Southern Pacific railroad, is a local supply point as well as Colusa, located 10 miles east of Williams […]
Copper Ore Extraction
Aerial view of the Opemiska Copper Mines (Quebec) Ltd., Mill Buildings and Shaft Area. Introduction The Opemiska mine property is in Levy Township in Chibougamau area of Quebec and is comprised of 487 acres of patented claims contiguous with 2,215 acres held under development license. The townsite of Chapais which serves the mine community is […]
Timed Flotation Test & Cumulative Grade Recovery Curve
Apart from conducting a rate test in the correct manner, it’s important to collect the right number of concentrates and at the right times; doing this will ensure that the data you generate maximizes your analysis of flotation response. To properly define the relationship between recovery and time, you need a minimum of four concentrates […]
Mineralogy & Flotation: Floatability VS Selectivity Test Assessment
Mineralogy is the driving force behind flotation performance. A flotation batch and rate test measures this as mass pull recovery and concentrate grade. The real data from a rate test can be processed to determine the flotation kinetics of metal, mineral and gangue. What we cover here is what are kinetics and what do they mean. […]
Uranium Milling
Aerial view of Susquehanna-Western, Inc., Uranium Mill near Falls City, Texas. Ore stock piles are upper center. The tailings line is seen at the upper right portion of the photo. Note the flat root and open wall design of the mill building. The completion of this 300-ton per day mill marked the first commercial plant […]