Raban Ngwira
Lusaka,Zambia
Summary
- Certified and Trained Metallurgical and Mineral Processing Engineer from the University of Zambia.
- Trained shift and Plant Metallurgist at First Quantum Minerals Limited.
- Mill operator at Kalumbila Minerals limited First Quantum Minerals Limited.
- Trainee and student field and project researcher Metallurgist at Konkola Copper Mines Ltd.
- Trained and experienced Flash float operator at Kalumbila Minerals limited First Quantum Minerals Limited.
- Trained and Experienced Cyclone Operator at Kalumbila Minerals limited First Quantum Minerals Limited.
- Organized and dependable candidate successful at managing multiple priorities with a positive attitude. Willingness to take on added responsibilities to meet team goals. Dedicated [Metallurgical Engineer] professional with history of meeting company goals utilizing consistent and organized practices. Skilled in working under pressure and adapting to new situations and challenges to best enhance the organizational brand. Enthusiastic and eager to contribute to team success through hard work, attention to detail and excellent organizational skills. Motivated to learn, grow and excel in the Mining and processing industry.
Overview
9
9
years of professional experience
Work history
Flotation Operator
First Quantum Minerals- Kalumbila Minerals Limited
Kalumbila, Zambia
- Consistently demonstrated best practices and conformance to company standards and safety regulations.
- Mentored new Operators in machine operating best practices and safety regulations through demonstrations.
- Achieved production targets with excellent planning and machine operation.
- Maintained high levels of organisation and cleanliness for clear and safe working environment.
Flotation Expatriate-Copper and Zinc Flotation
Al Masane Al Kobra Mining Comp. Limited (AMAK Mining Ltd)
Najran, Saudi Arabia
2023.11 - Current
- Managed Talc Roughers, Talc Cleaners and the New Talc Tank to pre-float the talc, thereby separating the Talc from the Copper and Zinc in the flotation process.
- Carried out routine operating tests to check for malfunctions and arrange for maintenance.
- Recorded and interpreted data on operating conditions to identify abnormalities.
- Controlled process start-up and shut-down to continually meet product conformance.
Mineral Value Chain and Monitoring Officer -Metallurgist
Ministry of Mines and Minerals Development
Katima Mulilo Border Post
2020.11 - 2023.11
- Undertook the effective the monitoring and verification of the quantity, quality and value of minerals on site, in transit and at borders in order to determine their true value and classification.
Shift & Plant Metallurgist
First Quantum Minerals-Kalumbila Minerals Limited
Kalumbila
2020.07 - 2020.12
- Monitoring and ensuring that mill consumables (reagents, media) are of the appropriate quality and quantity in order to ensure uninterrupted operations.
Process Control Room Operator
First Quantum Minerals-Kalumbila Minerals Limited
Kalumbila
2019.12 - 2020.05
- Operated PCS7 SCADA System using process controllers to adjust automation systems such as the set points, valve positions and limit values.
Mill operator (SAG and Ball mill operator)
First Quantum Minerals- Kalumbila Minerals Limited
Kalumbila
2019.01 - 2019.11
- Did Mill isolations during shut down and during normal maintenance.
Flash Flotation Cell operator
First Quantum Minerals-Klaumbila Minerals Limited
Kalumbila
2017.08 - 2018.12
- Operated the flash flotation cells manually by way of controlling the level set point of the level control valve opening.
Graduate Metallurgist
First Quantum Minerals-Kalumbila Minerals Limited
Kalumbila
2017.08 - 2018.03
Student Metallurgist
Konkola Copper Mines Limited
Chililabombwe
2015.08 - 2015.11
- Gave an outline of the main project objectives which would be implemented to achieve a possible solution of the problem stated.
Education
Certificate - Sustainable Mineral Resources Development
Stellenbosch University: Sustainable Institute South Africa
Bachelor of Science - Metallurgy and Mineral Processing
University of Zambia
Certificate of Higher Education - Secondary School Education
Nsansa International Education Trust
Skills
- Microsoft word, power point and Excel Application
- Automatic process control software SCADA-Control Room Operations Milling Section
- Expertise in Mineral Processing
- Process plant operational skills
- Cu Sulphide plant Operations
- Gravity Concentrator Operations for Gold Concentrate Recovery at Kalumibila FQM
- Cyclone Operations and sampling
- Operation of the Jameson Cell
- Operation of the Column Flotation Cells
- Highly Experienced in Mill operations, ie (SAG and Ball Mills) and flotation operations
- Sampling skills
- Sampling of the Feed to Flotation
- Sampling of the cyclone overflow and Underflow
- Sampling of the Ball Mill discharge
- Sampling of slurry from the rougher, scavenger, cleaner, Jameson and column cells
- Highly experienced in industrial safety, Environmental health and safety
- Safety skills
- Working at height
- Working in confined spaces
- Moving and Mobile Equipments
- Brother’s keeper
- Isolation of Equipment
- Think Training for SAFETY
Affiliations
- Member of the Engineering Institute of Zambia (EIZ)
- National Union of Miners and Allied Workers (NUMAW)
Languages
English
Bemba
Nyanja
Tumbuka
Career Milestone and Accomplishments
- Commissioning of the Moyeath Plant in Najran Province, Saudi Arabia, February 2024.
- January, 2024 Process improvement and optimization of the Talc Rougher circuit through the suggestion of introducing metal plates to prevent high overflows of the talc, thereby reducing on the loses of the valuable minerals (Copper and Zinc) by residence time in the Talc Rougher circuit at Al Masane Al Kobra (AMAK) Mining Company, in Saudi Arabia.
- Publication: ‘'Grind optimization of Konkola Blended Copper Ore'' Paper to the International Journal of Metallurgical Engineering. Link: http://article.sapub.org/10.5923.j.ijmee.20200801.02.html
- Investigated and did a project on "The Impact of Low and High throughput on Flotation performance and PSD " at First Quantum Minerals-Kalumbila Minerals Limited.
- Developed a model using Excel to "Determine the charge level" using the free height above steel Balls for both the SAG and Ball Mill at Kalumbila Minerals Limited.
- Successfully improved the performance of the Flash flotation cells by optimizing on the reagent dozing and calibration on the level control valve to improve on the grade and recoveries.
- Collaborated with the Process Control Engineers to configure and fine tune process control logistics for plant stabilization and optimization using metallurgical knowledge.
Timeline
Flotation Expatriate-Copper and Zinc Flotation
Al Masane Al Kobra Mining Comp. Limited (AMAK Mining Ltd)
2023.11 - Current
Mineral Value Chain and Monitoring Officer -Metallurgist
Ministry of Mines and Minerals Development
2020.11 - 2023.11
Shift & Plant Metallurgist
First Quantum Minerals-Kalumbila Minerals Limited
2020.07 - 2020.12
Process Control Room Operator
First Quantum Minerals-Kalumbila Minerals Limited
2019.12 - 2020.05
Mill operator (SAG and Ball mill operator)
First Quantum Minerals- Kalumbila Minerals Limited
2019.01 - 2019.11
Flash Flotation Cell operator
First Quantum Minerals-Klaumbila Minerals Limited
2017.08 - 2018.12
Graduate Metallurgist
First Quantum Minerals-Kalumbila Minerals Limited
2017.08 - 2018.03
Student Metallurgist
Konkola Copper Mines Limited
2015.08 - 2015.11
Flotation Operator
First Quantum Minerals- Kalumbila Minerals Limited
Certificate - Sustainable Mineral Resources Development
Stellenbosch University: Sustainable Institute South Africa
Bachelor of Science - Metallurgy and Mineral Processing
University of Zambia
Certificate of Higher Education - Secondary School Education
Nsansa International Education Trust