semi-autogenous-grind liners
Grinding

Semi-Autogenous Liners

The never ending search for lower unit costs led Pima Mining Company’s management to study various alternatives shortly after Expansion III was completed. It soon

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open pit equipment site preparation
Equipment

Open Pit Equipment Selection and Maintenance

Table of ContentsSite PreparationLoadingHaulageField Support and ServiceMaintenance Principal factors influencing equipment selection can be grouped into five basic categories. Tonnage Requirements, Ore and Waste, Topography and Property

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Mobile Crushing Plants

The transportation of mine products incurs a cost which can have a significant bearing on the competitive position of the product. This statement not only holds

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miller-number original test machine
Pumping & Conveying

Miller Number – Slurry Rating Index

Table of ContentsTest EquipmentMiller NumberCalculations The development of a new means of measuring the relative abrasivity of a slurry came about by necessity in 1967

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How to Remove Mercury from Copper Concentrate

Table of ContentsTypes of MineralisationSelective MiningChoice of Process ParametersDescription of Commercial PlantProcess DataStart-Up ProblemsSoot HandlingMetallurgical Balance The copper-silver-mercury orebody of Gortdrum Mines (Ireland) Limited is

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converter drive mill low-speed gearless mill
Grinding

Low-speed Gearless Converter Drive

Table of ContentsTechnical principleMechanical coupling problemsThe 6800 HP mill drive at Rohrdorf, West-Germany The first motors of this type were built to drive ball mills

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Hydraulic Excavator

First, the hydraulic excavator enjoys tooth forces of the shovel because the dipper is attached to the machine with a dipperstick and boom, and can

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the development of gypsum calcining
Non-Metallic & Industrial

Gypsum Calcining

Gypsum is the crystalline chemical compound CaSO4·2H2O. A close chemical relation – and frequently occurring with Gypsum – is Anhydrite which is CaSO4. Gypsun has

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