Mineral Processing Circuit

This technical report outlines the process plant design for the Boumadine Polymetallic Project, operated by Aya Gold & Silver Inc. The facility is designed to recover lead, zinc, and pyrite concentrates from polymetallic sulphide ore. The process flowsheet is based on conventional flotation technology, optimized to minimize operating costs while maximizing the use of proven equipment. The plant is designed for a nominal throughput of 2.92 million tonnes per annum (Mtpa) over a mine life of 11 years.

The REN Property is located within the Carlin Trend, a region known for refractory gold deposits. The gold mineralization is hosted in carbonaceous material and sulphides, which prevents direct cyanide leaching due to preg-robbing. Recovery requires oxidation of the ore prior to leaching.

This technical report section outlines the recovery methods for the Mana mineral processing plant. The facility has a nominal capacity of 4,000 mtpd, with expansion capabilities reaching 7,200 tpd for bedrock and 8,000 tpd for a saprolite/bedrock blend. The process involves crushing ROM ore, grinding via SAG and ball mills, and gold recovery through a Carbon-in-Leach (CIL) circuit.

The Kombat Project involves the refurbishment of the existing Kombat plant to treat open pit Run-of-Mine (RoM) material. The plant has a capacity of 30 ktpm and is designed to produce a copper concentrate with a target grade of 22% Cu. The processing circuit includes three-stage crushing and screening, rod and ball milling, flotation, concentrate thickening, and filtering circuits. Only the copper concentrate section will be refurbished, with no lead concentrate production.

This technical report outlines the recovery methods and process design criteria for the WILLAMAX project, which combines the Willa Mine and the MAX Mill. Discovery Ventures Inc. has purchased the MAX Mill to process the Willa mineral, which responds well to conventional grinding and flotation conditions. The project aims to reactivate the mill, originally designed for molybdenum ore, to treat copper-gold-silver sulphide ore. The report details the adequacy of existing equipment and specifies necessary additions, including a gravity concentrator for coarse gold recovery and pH control circuits.