Author: David

Since 1993, when he obtained his Mining Engineering Degree from Queen’s University, David has acquired experience in operating roles including many years in post-commissioning operations troubleshooting. Mineral Processing and Metallurgy has become a core strength and passion for Mr. Michaud. Learn more at https://911metallurgist.com/about-us/

Closed Circuit Grinding VS Open Circuit Grinding

opened-circuit-rod-mill-discharge-to-cyclone-and-close-circuit-ball-mill-with-cyclone

The simplest grinding circuit consists of a ball or rod mill in closed circuit with a classifier; the flow sheet is shown in Fig. 25 and the actual layout in Fig. 9. This single-stage circuit is chiefly employed for coarse grinding when a product finer than 65 mesh is not required, but it can be […]

French Crushability & French Abrasion Index

french-crushability

The french crushability and french abrasion test gives an abrasivity index and a crushability index that will rate the material in comparison with other materials. The french abrasion test is mainly used to estimate hammer wear life in impactor applications. The crushability index is a measure of how easily the material breaks down. The test […]

Furnace VS Kiln: Definition and Difference

types-of-furnce-heating-systems

Understanding the difference between a kiln and a furnace is not so hard, once you know their true definitions. A kiln is usually charged (filled with stuff), then heated to fuse the stuff, then cooled, and the stuff removed. A furnace is usually heated first, then charged, then the stuff removed, and the furnace eventually […]

Laboratory Flotation Test Procedure

Mineralogy & Flotation: Floatability VS Selectivity Test Assessment Flotation Kinetics: Mass & Water Recovery VS Entrainment & Mineralogy Timed Flotation Test: Concentrate Collection & Cumulative Grade Recovery Curve

How to Size of Crushing Plant

how_to_size_a_crushing_plant

When calculating the size of a crushing plant, it is not advisable to design a crushing plant to run for 24 hours per day. The machines are subjected to greater shocks and rougher wear than grinding and concentrating machinery and need more frequent attention in consequence. It is an almost universal custom to crush the […]

Small Screw Conveyor

Screw Conveyor

Small Screw conveyors are used principally for bulk conveying of light and fluffy dry material, materials which dust badly when conveyed, hot materials which cannot be handled on rubber belts, and for conveying of liquid pulps. They may be installed on an angle for lowering or elevating materials. With the bottom or end of trough […]