Ultra Hard Coating Extends Pressure-Monitor Diaphragm Life at Xstrata Mill

Ultra Hard Coating Extends Pressure-Monitor Diaphragm Life at Xstrata Mill

Xstrata Nickel operates five ore processing lines at its mill in Onaping, Ontario. Each line includes a cyclopack, consisting of a group of hydrocyclones arranged in a circle to share ore separation duty. Nickel ore slurry flows to the top of the cyclopack, where it is distributed to the cyclones.

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Concentrate Launder Design: Which One Is Right For Your Plant?

Concentrate Launder Design: Which One Is Right For Your Plant?

Rob Coleman

The selection of the size, number and type of flotation cells for a particular duty depends on two important factors. The required flotation residence time and the physical constraints of how much concentrate can be recovered for a given froth surface area and concentrate lip length. The residence time is influenced by ore type and characteristics such as liberation, kinetics and reagent dosage. Looking at the amount of concentrate that can be recovered, it also depends on ore type and additional characteristics such as particle size, specific gravity and mineral grade.

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Clamp-On Ultrasonic System Solves Slurry Flow Measurement Problem at Chilean Copper Operation

Clamp-On Ultrasonic System Solves Slurry Flow Measurement Problem at Chilean Copper Operation

For a Chilean copper producer located in the Antofagasta region of northern Chile, finding a flow measurement system to replace their existing setup was a matter of thinking outside the box. Although several key performance requirements suited the electromagnetic flow meters the mining company had been using for years—including high accuracy and reliable performance—a pressing need for a low-maintenance, easily installed system disqualified that technology, and the company had to look elsewhere for alternative solutions.

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Gravity Separation Technology for Oil Sands

Gravity Separation Technology for Oil Sands

By Steve Fiscor, Editor-in-Chief

This year, the synthetic crude producers in Alberta predict that they will average 721,000 barrels per day, which amounts to mining 1.4 million tons per day of oil sands. This figure is expected to double in the next 10 to 15 years.

Moving that amount of material requires skill, technology and patience. Although the basic premise of the hot water process developed by Dr. Karl A. Clark to separate the bitumen from the sand in a slurry has not changed, the individual pieces of equipment have improved and the capacity of the processing facilities has grown considerably.

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