Why Convert a CCD Gold Circuit to CIL- Pro & Cons

Is a CCD gold circuit better than a CIL or CIP plant?  Why convert? Any good reasons? The Cortez staff was responsible for conceptual design, equipment procurement and equipment installation, construction management and supervision for the mill conversion project. Structural design and engineering for the building additions were provided, and the construction labor for the … Read more

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 … Read more

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 … Read more

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 … Read more

Carbon Adsorption of Silver from Acidified 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 … Read more

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 … Read more

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 … Read more

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 … Read more