G-9 Processing:
The G-9 Mine has the advantage of high grades for its various minerals. As well, the metallurgy of the G-9 deposit has several advantages including:
- G-9 mineralization has low pyrite content, therefore less refractory than other deposits
- coarse primary grinds can be used in the plant to treat higher-grade feed;
- very high zinc recoveries and concentrate grades
- high levels of contained silver and gold values
- low iron content in the zinc concentrate
- the concentrates contain low amounts of deleterious elements. As a result, the concentrates are very marketable and are being well received by the market.
G-9 Flotation Test Results - High Grade Metallurgical Balance Data
The processing plant is designed to treat 1,500 tpd of mineralized material and to produce selective copper, lead and zinc concentrates.
The flowsheet includes:
- primary crushing,
- autogenous primary milling,
- secondary vertical tower mills ("VTMs"),
- rougher and cleaner flotation,
- re-grinding in stirred mill detritors ("SMDs"), concentrate thickening and
- pressure filtration.
Mineralized material has been processed at rates of up to 1,900 tpd on a 72 hour basis and saleable concentrates have been trucked off site since October 2008. In February 2009 the first vessel concentrates of G-9 products sailed to Asian smelters and were well received.
G-9 Flotation Flowsheet
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G-9 Mine : Overview
Location
History of G-9
Development
Production & Mine Plan
Processing
Marketing
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