Zincore Metals Inc.
TSX : ZNC
BVLAC : ZNC

Zincore Metals Inc.

September 23, 2010 08:32 ET

Zincore Achieves High Percentage Zinc Recoveries and Grades in Preliminary Pilot Plant Tests on Yanque Project Ores

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 23, 2010) - Zincore Metals Inc. (TSX:ZNC)(BVLAC:ZNC) ("Zincore" or the "Company") reports that it has achieved zinc recoveries of up to 93% and lead recoveries of up to 98% at a calcine grade of 61% zinc (~77% zinc oxide) and 11% lead (~12% lead oxide) in preliminary, pilot plant testing of a Waelz kiln to treat ores from its Yanque project at the Company's Accha Zinc Oxide District in southern Peru.

Zincore President and CEO, Jorge Benavides, stated, "We are elated with these results. They not only confirm our belief that a Waelz kiln can process disparate ores from different deposits while delivering high percentage recoveries and grades, but these results actually exceed our original expectations. Although we have more work to do, the findings are significant for the economics of our Accha Zinc Oxide District, where we are pursuing a district strategy with a central processing facility." 

Highlights and Conclusions from the Pilot Plant Tests

  • During initial "parameter" testing, recoveries were achieved of up to 93% for zinc and 98% for lead at a calcine grade of greater than 61% zinc (~77% zinc oxide) and 11% lead (~12% lead oxide)
  • In continuous testing, recoveries averaged78.3% for zinc and 91.2% for lead with a calcine grade of 51.53% zinc (64% zinc oxide) and 13.7% lead (14.75% lead oxide)
  • Melting of the charge within the kiln during continuous testing, was found to be the cause for the loss in recovery
  • With additional testing in the laboratory to study the response of the various species to elevated temperature, it is the belief of the Company's metallurgical consultants that this phenomenon can be controlled, and that the recoveries of both zinc and lead could be significantly improved

Four samples at various feed grades (totaling 8.7 tonnes) were selected by the geologists from the Yanque project at the Company's Accha Zinc Oxide District in southern Peru.

Fourteen initial parameter tests were conducted to determine the optimal parameters for variables such as plant feed rate, kiln residence time, anthracite (coal) ratio, kiln temperature and zinc content. Using the information gained, the above mentioned continuous run was conducted over a period of 96 hours. 

To view a summary report on the test results, please visit our website at www.zincoremetals.com.

All test work was done at the Corianta Waelz kiln facility in Pacasmayo, Peru, which is owned by Cementos Pacasmayo SAA. In turn, approximately 64% of Cementos Pacasmayo is owned by Inversiones Pacasamayo SAA, which also owns approximately 36.9% of the outstanding shares of Zincore. Corianta has been using a Waelz rotary kiln at its facility to process zinc and lead ore from its Bongara mine to produce a commercial high grade zinc oxide concentrate.

The pilot plant was operated by staff from the Corianta plant under the guidance of Michael Valenta Pr. Eng. (Intl) of Metallicon Process Consulting (Pty) Ltd of Hartbeespoort, South Africa. Metallicon is an independent consulting firm that provides specific, technical expertise in the area of mineral processing. Mr. Valenta is a metallurgical engineer and an internationally registered Professional Engineer under the Washington Accord. He has significant experience in laboratory, pilot testing and full-scale refinery metallurgical practice and processes.

On site representation for Metallicon was provided by Hatch International, a global engineering, procurement, construction, and management company with more than 8,000 people in 65 offices on six continents that supplies engineering, project and construction management services, process and business consulting and operational services to the mining, metallurgical, energy and infrastructure industries.

Vernon Arseneau, P.Geo., Vice President, Exploration for Zincore has prepared or supervised the preparation of the information contained in this news release and is the Qualified Person as defined under National Instrument 43-101 for this news release.

About Zincore

Zincore is a Vancouver-based mineral exploration company focused mainly on zinc and related base metal opportunities in the Americas, namely Peru, Mexico and Canada. The Company's common shares trade on both the Toronto and Lima Stock Exchanges under the symbol ZNC. For more information, please see our website at www.zincoremetals.com

Forward-looking Statements: Statements in this release that are forward-looking are subject to various risks and uncertainties concerning the specific factors disclosed under the heading "Risk Factors" and elsewhere in the Annual Information Form of Zincore dated March 12, 2010 which is filed with Canadian securities regulatory authorities and available on SEDAR (www.sedar.com). Such information contained herein represents management's best judgment as of the date hereof based on information currently available.

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