Effect of Rod Mill Feed Sizing on Grinding Performance
There is no reported evidence that feed size has any effect on rod mill power draw. Because the solids in the rod mill are known to appreciably expand the mill charge (as observed in the charge level before and after grinding out the mill), there would likely be a tendency for power draw to be […]
SAG Mill Feed Particle Size Analyser
We describe here one of the very first pioneering SAG Mill Feed Particle Size Analysers: A set of preliminary experiments was carried out in order to assess the hardware-software’s behaviour. Static ore was used to obtain the right sequence of image processing algorithms. The camera was installed 3 mts away from the commercial sizer over […]
Belt Conveyor Shifting Equipment
The components of belt conveyor shifting force are a vertical force, Pv, horizontal force, Ph, and longitudinal force, Pl. A method for estimation of these forces is proposed, which relates their value to the properties of the conveyor structure and rails, shifting operation parameters, and other site-specific conditions. Belt Conveyor Shifting In surface mining operations […]
Carbon Adsorption of Silver from Thiourea Solutions
Carbon adsorption was considered as the most adequate method for recovery of silver from thiourea leach solutions. For this reason it was decided to examine the characteristics of adsorption of silver on activated carbon. Coconut hard shell activated carbon was used for this study. Experimental The carbon, coconut hard shell, was pulverized and dry seived […]
P MC
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Recover Silver & Gallium with Acidified Thiourea Solutions
The recovery of silver and gallium from flue dust with acidified thiourea solutions was examined. The studied parameters were temperature, particle size, thiourea concentration, acid concentration, and the presence of oxidants. The study of the extraction of these two metals was undertaken in sulfuric acid medium. Silver dissolution was dependent on all examined parameters, whereas […]
Disseminated Epithermal Gold Deposits
Epithermal gold deposits occur in and near the marginal fault that circumscribes the Goldfield, Nevada, Tertiary caldera. The gold occurs disseminated in alunite, pyrite, and kaolin- bearing silicified zones that are controlled by the circular faults. Other Tertiary calderas (i.e., Summitville and Red Mountain No. 3) have epithermal disseminated gold deposits located in and near […]
Bucketwheel Suction Dredging
Bucketwheel Suction Dredges however would tally less than one hundred throughout the world. The Neumann Group have produced 11 units and Ellicott, IHC Holland and O. & K. Germany have produced various models. Some of the reasons there are so few Bucketwheel Suction Dredges are:- It is a relatively recent development. The problems associated with […]
Manganese Recycling
Manganese Recycling is essential to iron and steel production in the United States. Demand in metallurgical applications accounts for most of the manganese consumed in the United States, with ironmaking and steelmaking alone consuming 82 pct. The importance of manganese is related to the functions it performs. Manganese controls oxygen and sulfur impurities in steel, […]
Chromium Recycling
Chromium is an indispensable element in a variety of strategic and critical applications. It is used to produce steels, superalloys, refractory brick, and a variety of chemicals. There is no substitute for chromite ore in the production of chromium ferroalloys, chromium chemicals, or chromium refractories. There is no substitute for chromium in stainless and heat-resistant […]