Description
Job Summary:
Professional required to operate crushing, grinding, leaching, elution, and filtration equipment, with emphasis on safety and process optimization.
Key Highlights:
1. Operation of crushing and grinding equipment
2. Involvement in CIL/CIP/leaching and elution processes
3. Focus on safety, cost control, and production
Job Responsibilities:
Crushing:
* Interface with Mine Operators (crushing feed, blended feed, stockyard disposition);
* 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 related to ore shortage, jamming, overload, or energy isolation; crusher calibration;
Grinding:
* Operate and monitor field feed and discharge of grinding equipment; fully responsible for the entire grinding area;
* Collect samples at mill feed and discharge; perform scale drop tests; support roller replacement; clean load cell chambers 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, hand cart/wheelbarrow);
* Clear obstructions from ore transfer chutes;
* Operate hydrocycloning (flow rate, pressure, liner replacement, APEX and VORTEX inspection, inspection and sample collection);
* Operate Acacia reactor (intensive leaching); support cartridge (filter element) replacement; collect samples; perform transfers;
* Prepare reagents;
* Inspect vibrating and linear screens (screen and module replacement, unblocking water spray nozzles);
CIL/CIP/LEACHING/DETOX:
* Sample collection (pulp density, pH, oxygenation, carbon profile, soluble gold sample, cyanide titration);
* Carbon handling and carbon production;
* Start-up and shutdown of 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 adjustments, pump start-up and shutdown;
* Operate TAC – Cyanide Analyzer and dosage control;
* Handling of chemical products;
* Reagent preparation;
* pH control;
* Work with lifting operations, high-pressure water jetting, overhead cranes, NR35, NR33, NR12, NR06, NR22;
* Knowledge and training in CIC (International Cyanide Code);
* Interface with all departments and Control Room;
Elution:
* Control of temperature, pressure, flow rate, and time;
* Cleaning and replacement of heat exchangers and strainers;
* Boiler operation;
* Operation and sample collection (control of electrolysis inlet and outlet – electrolytic cells);
* Control and operation of acid washing;
* Sample titration (cyanide, soda ash, hydrochloric acid);
* Interface with all departments – transfer of enriched and exhausted carbon;
* 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;
**Requirements:**
* Completed elementary education;
* Residency in Currais Novos\- RN;
* Availability to work rotating shifts.
Minimum Education Level: High School (Secondary Education)
* Meal allowance
* Life insurance
* Dental assistance
* Profit-sharing plan (PLR)
* Transportation
* Cafeteria
* Medical assistance