May 2014

The best in new technology

Compiled by Alexandra Lopez-Pacheco

◢ Efficiency in the lab

Vibratory_Sieve_Tower   A few years back, Cleveland Vibrator Company, a designer and manufacturer of vibratory products, set out to solve a common problem with laboratory sieve shakers used for sample particle size analysis: screen clogging and inefficient throughput. The result of this work is the Model HK Dual Drive Laboratory Sieve Shaker, which has two rotary electric vibrators that generate much more force and energy than the electromagnetic vibration used in standard lab shakers. Additionally, the screen moves linearly and circularly, increasing the throughput efficiency and speed because “it gives the material being sieved much more motion across the surface of the screen,” says Jeff Hochadel, sales manager for vibratory screening and sieving. Available in eight-inch, 10-inch, 12-inch and 18-inch diameter sieve frame sizes, the unit can accommodate up to eight sieves and comes with the option of an ultrasonic sieving system. “That allows for ultrasonic energy to be applied to the screen surface, which helps eliminate clogging of the sieve,” says Hochadel.

◢ Mineral identification at your fingertips

Traditional mineral analysis instruments can be cumbersome to use. “Geologists need three hands to operate the cabling and multiple devices involved,” says Chris Sherry, senior marketing manager at PANalytical Boulder Inc. The company, formerly known as Analytical Spectral Devices (ASD), develops material analysis and near-infrared (NIR) analytical instrumentation. Sherry and his colleagues recently launched the ASD TerraSpec Halo mineral identifier: a handheld device, weighing only two kilograms, that employs NIR spectrometry to identify minerals. “When you pull the trigger, it shines a halogen light on a surface, which interacts with the chemistry,” he says. A sensor captures the reflected light and matches results to the corresponding mineral identification found in the device’s built-in library, comprising roughly 125 minerals from various catalogues, which are always updatable via the Internet. “All you have to do is put the instrument against the rock, click the trigger and in a few seconds you get a mineral result on the screen,” says Sherry. The device also includes a global positioning system unit.

◢ New lean-burn gas-fuelled generators

Power generation remains one of the biggest expenses for miners, and the ability for mines to quickly switch to lower-cost natural gas can present significant savings. That is where moalguera’s new leanburn gas-fuelled generator sets come in. With power ratings that range from 315 kilowatt electrical to two megawatt electrical, and with low emissions that meet the most stringent air quality regulations without aftertreatment devices in the exhaust stream, these robust and high-efficiency generation sets are capable of running on both natural gas and alternative gaseous fuels including diesel. “As natural gas becomes available, they’re able to go with it and take advantage of its lower operating cost,” says Tony Blaubaum, South Pacific general manager for energy solutions business.  Cummins_generator

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