Engineering & Mining Journal

JUN 2013

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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SUPPLIERS REPORT growth strategy in the North American market. In a series of steps, the plant capacity has been expanded from 39,000 mt/y in 2008 to the current 93,000 mt/y. It now has two plants in Winnemucca and a distribution terminal in Quebec. In addition, in 2012, Cyanco and Posabro Corp. began sales of Cyanco's sodium cyanide in Mexico and now operate a distribution terminal in Hermosillo, Mexico. With the new Texas plant and the expansion in Winnemucca, Cyanco claims it is now the largest global producer of sodium cyanide with a total capacity of 148,000 mt/y. The present Cyanco entity was formed in 2008 when Oaktree Capital Management acquired Nevada Chemicals Inc. and purchased Degussa's (Evonik) sodium cyanide business in the United States and Canada. Jacobs Assists Minera Chinalco with Expansion Jacobs Engineering Group has received a contract from Minera Chinalco Perú S.A. to perform a feasibility study for the expansion of its Toromocho copper mining facilities in the Morococha district of Peru. The mine is located at an altitude of 14,700 to 16,400 ft (4,480 to 5,000 m). Jacobs has been working on the Toromocho copper project since 2006. The current phase of engineering, procurement and construction management is nearing completion. Under the original design, the facility is capable of treating 117,200 mt/d and producing in excess of 210,000 mt of copper annually, plus byproducts of silver and molybdenum. Major equipment required for the proposed capacity expansion includes apron feeders, a conveyor system for mill feed, a semi-autogenous grinding (SAG) mill, a ball mill and cyclones, flotation cells, a tailings thickener, and all associated equipment. The existing plant layout allows for the integration of new equipment required for the current expansion. Jacobs Group Vice President Andy Kremer said, "We are delighted to further support Minera Chinalco on their proposed expansion. We have several years' experience working as an integrated team on the Toromocho project. Given the ongoing construction activities on site, the knowledge we have already acquired will be extremely valuable as we consider optimum solutions and tie-in designs needed to incorporate the planned expansion into the existing facilities." Minera Chinalco Perú S.A. is a subsidiary of Chinalco Mining Corp. International (CMC), a company listed on the Hong Kong Stock Exchange. The Aluminum Corp. of China (Chinalco), headquartered in Beijing, is the ultimate and controlling shareholder of CMC. Chinalco is the second largest alumina producer and the third largest primary aluminum producer worldwide. Jacobs did not disclose the contract value. The project is expected to be handled out of Jacobs' Lima, Peru, office with assistance from its Santiago, Chile, and Tucson, Ariziona, USA, offices. SEG Maps Now Included in Geoscience Research Service Technical publisher and services provider Elsevier and the Society of Economic Geologists (SEG) announced the inclusion of maps from SEG's flagship Economic Geology journal into Geofacets, Elsevier's research tool for geoscientists working in exploration. The joint effort means that geoscientists in the metals and mining, and oil and gas industries can now access more than 250,000 maps via Geofacets, COMPANY PROFILE- PAID ADVERTISEMENT Eriez—Coal Processing Eriez' Mining features separation, material handling and detection systems to concentrate magnetic ores, recover coal fines, remove tramp metals, convey or feed heavy material as well as provide customers with a full service department. Metal Detectors Detects tramp and non-magnetic metals as small as ½". These metal detectors are built to handle harsh environments. Heavy Duty Feeders Low-horsepower, high-capacity mechanical feeders that can handle bulk materials in volumes up to 2,250 tph. Column Flotation • CoalPro™ Column Flotation Cells for high-volume recovery of fine coal (0.2 mm) particles. • StackCell™ offers column-like performance in a substantially smaller footprint than conventional cells. These compact, stackable units offer considerable savings for new installations and are ideal for expanding capacity in an existing plant. Wet Drum Separators Provide continuous, automatic recovery of magnetite or ferrosilicon in heavy media operations and/or concentration of ferrous and weakly magnetic ores. Five-Star Service Offers a 24/7 service hotline, original OEM parts, on-site field service, equipment remanufacturing and full "as new" warranties. For more information, visit www.eriez.com. Suspended Electromagnets Remove damaging tramp iron from conveyed materials. Available for use in hazardous, dusty and gassy locations. 154 E&MJ • JUNE 2013 www.e-mj.com

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