Mineral Processing Circuit

This NI 43-101 Technical Report details the processing facility and operational status of the Langer Heinrich Uranium Project (LHU) in Namibia, operated by Paladin Energy Limited. The facility was historically operational until 2018 and is currently undergoing a Restart Project to resume production. The report outlines the beneficiation and hydrometallurgical circuits, including ore handling, scrubbing, classification, leaching, ion exchange, and precipitation processes. Historical data from 2014 to 2018 indicates uranium recoveries generally above 80%, with recent years achieving 85-90%.

This NI 43-101 Technical Report details the recovery methods and processing plan for the Great Atlantic Salt Project, operated by Atlas Salt Inc. The project involves underground mining of salt deposits to produce de-icing salt conforming to ASTM D632-12 specifications. The processing plant is designed to operate underground, utilizing conventional dry screening and crushing methods to achieve a maximum annual production rate of 4.0 million tonnes per annum (Mtpa). The facility includes a 190 m long processing area located at the bottom of a conveyor incline tunnel, equipped with double roll crushers and inclined vibrating screens.

This section of the 2014 Hannukainen Technical Report details the metallurgical testwork and process plant design for the Hannukainen project. The ore bodies, including Laurinoja, Kuervaara, and Vuopio, contain magnetite and chalcopyrite with associated gold. Metallurgical testing conducted by SGS and GTK between 2007 and 2013 established a flowsheet involving primary AG/SAG grinding, copper flotation, magnetic separation, and pyrite/pyrrhotite flotation. The plant is designed for 6.5 Mtpa throughput at Rautuvaara, producing magnetite concentrate (68% Fe) and copper concentrate (25% Cu).

This technical report details the recovery methods and mineral processing plant design for a silver-lead-zinc sulphide ore project developed by Xtierra Inc. The facility is designed for a throughput rate of 2,000 tonnes per day (tpd). The processing circuit is engineered to produce separate lead-silver and zinc concentrates for off-site transport, utilizing a comprehensive flow of crushing, grinding, and flotation operations.

This Technical Report and Preliminary Economic Assessment outlines the proposed recovery methods for the Da Tambuk Project located in the Adyabo Property, Tigray National Regional State, Ethiopia. The project involves an underground mining operation targeting gold-silver bearing material. The proposed processing facility is designed to treat material at a nominal rate of 550 tonnes per day (200,000 tonnes per annum) using whole mill feed cyanide leach technology. The process integrates conventional crushing, ball mill grinding, gravity concentration, and a six-stage Carbon-in-Leach (CIL) circuit to recover gold and silver into a doré product.