Cyanide Free Gold Leaching Alternative
What is cyanide and why do we need cyanide-free gold leaching process? Cyanide (CN–) has been used since 1889 to recover gold from hard rock. As sodium cyanide (NaCN), it reacts with gold, oxygen (O), and water (H2O) to form a gold cyanide complex (Na [Au(CN)2] ) and sodium hydroxide (NaOH). The chemical reaction dubbed […]
CIL Gold Mill Flowsheet -Carbon In Leach
Ball & Rod Mill Density – How Water Impacts Grinding
Density, if you recall is the ratio of ore to water and is measured as a percent of solids in the water. It will control the grind in two ways. It affects retention time and helps distribute the ore through-the mill so each piece of rock will come in contact with the surface of the […]
Grind Calibration Curve -Laboratory Test
Before doing multiple laboratory flotation bench tests in which you need P80 grind controlled or predicted, you need to build a Grind Calibration curve following this short procedure. You will consistently add sufficient water to the mill to achieve a pulp density of 67% solids (Example: 1 kg solids + 0.5 kg water or 2 kg […]
Types of Ore Feeders
Legend: (a) belt, (b) apron, (c) screw, (d) shaking, (e) vibrating, (f) drum, (g) disk, (h) chain
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/
Molybdenum Grind Size & Liberation VS Collector Dosage for Recovery by Flotation
In an effort to evaluate the metallurgical results of an operating plant, 3 process stream samples (red points) provided were subjected to detailed modal analysis using protocols established for mineralogically similar ores. This method of analysis provides quantitative estimates of the mineral composition and of the mineral fragmentation characteristics. This data can then be used to […]
Molybdenum Flotation
A Molybdenum Flotation case study with about 6% of the molybdenum contained in the feed is present as an oxide form and about 90% of this is not recovered to the flotation concentrate. Recovery of molybdenum into the rougher concentrate varied between 90 to 95% at a concentrate grade of 2.5 to 3.7% molybdenum. The […]
Gold Hog Sluice Mat Review
Looking for Gold Hog Matting Reviews I went on a large gold prospector forum and asked the question: What is so special about those Gold Hog Sluice Mats? Here below are all the many answers and comments I received. ———- Hi.It is hard too explain.but many years and testing go into these mats.You should watch the You […]
How to SIZE a Sluice Box
This week I went and asked “how to SIZE a sluice box” to the crew on a large gold prospector forum and other sluice or gravity gold recovery ‘experts’ and gathered the list of emails and forum posts here below. As you will see, in summary, most can optimize or troubleshoot a sluice box but […]