Weir Minerals Announces Sale of a KHD High Pressure Grinding Roll (HPGR) to Goldrock Mines’ Argentine Subsidiary

Weir Minerals, a leading supplier to the global minerals processing industry, announces the sale of a KHD high pressure grinding roll (HPGR) to Goldrock Mines for installation in an Argentina heap leach gold mine.

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High pressure grinding rolls are increasingly being used in comminution circuits ... due to their lower capital cost, lower energy consumption, lower maintenance requirements and enhanced downstream mineral recovery.

Madison, Wisconsin (PRWEB) December 12, 2013

Weir Minerals, a leading supplier to the global minerals processing industry, is pleased to announce the sale of a KHD high pressure grinding roll (HPGR) to Toronto Stock Exchange Venture listed Goldrock Mines (TSX:V GRM) for installation in an Argentina heap leach gold mine.

After a hard fought competition by all major suppliers, Goldrock Mines awarded Weir Minerals North America an order for the supply of a roller press (RPS), or a high pressure grinding roll (HPGR) as it is known in the minerals industry. The scope of supply includes a RPS 16-170/180 HPGR, along with motors with variable speed controllers, and special tools.

Goldrock’s Lindero Project consists of a porphyry gold deposit located in northwestern Argentina and includes a shallow open pit mine, two stage conventional ore crushing, followed by a closed circuit HPGR crusher, conventional heap leaching, and a carbon absorption-desorption-recovering processing plant for precious metal recovery.

The KHD HPGR will process approximately 955 tonnes/hour for the gold heap leach process. It will operate in a closed circuit with edge recycling, to ensure adequately sized feed is provided to the heap leach pad.

High pressure grinding rolls are increasingly being used in comminution circuits instead of conventional crushers and AG or SAG mills due to their lower capital cost, lower energy consumption, lower maintenance requirements and enhanced downstream mineral recovery.

In April, 2013 Weir Minerals signed an exclusive and perpetual license with KHD Humboldt Wedag (KHD), giving Weir Minerals direct control over the design, manufacture, and distribution of high pressure grinding rolls in minerals processing applications using KHD technology.

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About The Weir Group PLC

Weir, a FTSE 100 company founded in 1871 and headquartered in Glasgow, Scotland, is a global provider of engineering solutions to the minerals, oil and gas and power sectors. Our commitment to engineering excellence, research and customer focus extends equipment wear life and operational capability in some of the world’s most challenging environments.

Weir is committed to going where our customers go, with a worldwide network of more than 200 manufacturing facilities and service centres. The business has a presence in more than 70 countries, with more than 14,000 staff around the world working in three divisions; Minerals, Oil & Gas and Power & Industrial. Weir’s customer base includes the world’s largest mining houses, major oil services businesses and nuclear and conventional power generation companies.

Annual revenues were more than £2.5 billion in 2012, of which more than half came from the provision of services and aftermarket support. Emerging markets contributed 35% of overall Group revenues.

See http://www.weir.co.uk for further information.

About Weir Minerals

Weir Minerals employs more than 7,000 people worldwide, delivering end-to-end solutions for all mining, dewatering, transportation, milling, processing and waste management activities. Annual revenues were more than £1.3bn in 2012. Weir Minerals has an advanced product range incorporating brands such as Warman® centrifugal slurry pumps, GEHO® PD slurry pumps, Linatex® rubber products, Vulco® wear resistant linings, Cavex® hydrocyclones, Enduron® comminution equipment, Floway® Pumps vertical turbine pumps, Isogate® slurry valves, Multiflo® mine dewatering solutions, Hazleton® specialty slurry pumps, and Lewis® Pumps vertical chemical pumps — covering virtually any application, in any environment. The Weir Minerals global network ensures they are close to their customer wherever they may base their local operations.

For more information, visit http://www.weirminerals.com.

About Goldrock Mines Corp.

Goldrock Mines Corp. is an emerging gold producer focused on the development of its 100% owned Lindero gold deposit located in Salta province, northwestern Argentina. The Company has been granted the primary mining permit by the Salta provincial government allowing the Company to develop the Lindero open pit, heap leach gold mine. Results of the Lindero Feasibility Study have recently been announced. Production will be at an initial throughput rate of 15,000 TPD, increasing to 18,750 TPD during the first year of operation. Average annual production will be 109,000 ounces during the first nine years. The Company has assembled an experienced operating team and is arranging project financing with commercial production anticipated in 2015. The Company's objective is to become a mid-tier gold producer with annual gold production of 250,000 ounces per year through organic growth and accretive acquisitions of near-term producing assets.


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