FIG. 1: The selection of the most appropriate materials handling system for a given mining operation must consider economic, social, environmental and technical issues. (Picture: Geomartin / Wikimedia Commons)
Truckless Conveying

Assessing the Truckless Conveying Option in Mines

As an alternative to traditional truck and shovel mining, in-pit crushing and conveying systems are attracting global interest for their sustainability benefits and potential to reduce operating costs. The selection of the most appropriate solution for a given operation must consider economic, social, environmental and technical issues.

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The iron ores are reduced in a blast furnace. The carbon-rich molten raw iron is converted into low-carbon steel in massive converter ladles (Picture: Samson)
Oxygen Injection

Control Valves: Tackling A Burning Issue

"Oxygen fire" – a nightmare scenario for steel mills and foundries. Where extreme temperatures, oxygen and high pressure come together, materials that seem fire–proof such as metals can easily burn. Therefore, applications like molten metals call for highly specialised process components - also in terms of control valves...

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New ball mill PM100 by Retsch  (Picture: Retsch)
Ball Mills

High Energy Ball Mills for Nano-Scale Grinding

There are basically two methods of producing nano-scale particles: the “Bottom-Up” technique involves synthesizing the particles from atoms and molecules. With the “Top-Down” method the particles are reduced to nanometer size by grinding. Suitable tools for this method are planetary ball mills, such as Retsch’s new PM-series grinders, which provide the necessary energy input.

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