Description
Job Summary:
A professional responsible for the operation and monitoring of crushing, grinding, leaching, filtration, and water treatment processes at a mining facility.
Key Highlights:
1. Complete operation of crushing and grinding equipment.
2. Monitoring of CIL/CIP/leaching and filtration processes.
3. Control and operation of water treatment systems.
Job Responsibilities:
Crushing:
• Interface with Mine Operators (crushing feed, blended feed, stockyard placement);
• Operation of all equipment (hopper, vibrating feeder, jaw crusher, belt conveyor, scrap extractor, metal detector, emergency switches, rip switches, speed sensor, scale, and other equipment);
• Report to Operator III for decision-making, proactively identifying potential issues such as ore shortage, jamming, overload, energy lockout; crusher calibration;
Grinding:
• Field operation and monitoring of mill feed and discharge; full responsibility for the entire grinding area;
• Collect samples from mill feed and discharge; perform scale drop tests; support roller replacement; clean load cells of scales;
• Operate and monitor gravity circuit (gravity concentrators, basket cleaning, inspection, water filter cleaning, area inspection);
• Conduct equipment inspections including pumps, screens, cyclones, and mills;
• Clean the area manually using hand tools (shovel, hoe, wheelbarrow/handcart);
• Clear obstructions in ore transfer chutes;
• Hydrocyclone operation (flow rate, pressure, liner replacement, APEX and VORTEX inspection, inspection and sampling);
• Operate Acacia reactor (intensive leaching); support cartridge (filter element) replacement; collect samples; perform transfers;
• Prepare reagents;
• Inspect vibrating screens and linear screens (screen and module replacement, unblocking water sprays);
CIL/CIP/LEACHING/DETOX:
• Sample collection (pulp density, pH, oxygenation, carbon profile, soluble gold sample, cyanide titration);
• Carbon handling and carbon production;
• Starting and stopping agitators and pumps;
• Tank draining;
• Containment basin cleaning;
• Cleaning and inspection of inter-stage screens;
• Cleaning of carbon production and safety screens; screen and module replacement;
• Pump inspection, gland packing adjustment, pump start-up and shutdown;
• Operate TAC – Cyanide Analyzer and dosage control;
• Chemical handling;
• Reagent preparation;
• pH control;
• Work with lifting operations, high-pressure water jetting, overhead cranes, NR35, NR33, NR12, NR06, NR22;
• Knowledge and training on CIC (International Cyanide Management Code);
• Interface with all departments and the control room;
Elution:
• Temperature, pressure, flow, and time control;
• Heat exchanger and strainer cleaning and replacement;
• Boiler operation;
• Operation and sampling (control of electrolysis inlet and outlet – electrolytic cells);
• Acid wash control and operation;
• Sample titration (cyanide, soda ash, hydrochloric acid);
• Interface with all departments – enriched carbon and exhausted carbon transfer;
• Area cleaning and organization (5S);
• Support maintenance during equipment shutdowns;
• Focus on all KPIs (cost control, production, safety indicators);
• Pump operation, start-up and shutdown;
Filtration:
• Filtration operation;
• Thickener operation (torque control, RACK, density, reagent dosing);
• Pump operation control, start-up and shutdown;
• Moisture content control;
• Direct interface with all departments (ensuring UF operational continuity);
• Hand over equipment to maintenance according to scheduled shutdowns;
• Support maintenance and shutdowns, including corrective ones;
Wastewater Treatment Plant (ETE) and Water Treatment Plant (ETA):
Operation of the entire reclaimed water system;
Control of water inflow and outflow;
Ensure all process stages are functioning properly;
Requirements:
• Completed elementary education;
• Residence in Currais Novos\- RN;
• Availability to work rotating shifts.
Minimum Education: Elementary School (1st level)
* Transportation
* Meal allowance
* Dental care
* Profit-sharing plan (PLR)
* Cafeteria
* Life insurance
* Medical assistance