Sonia Mavhungu

Sonia mavhungu

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location of Sonia MavhunguGauteng, South Africa
Followers of Sonia Mavhungu1000 followers
  • Timeline

  • About me

    Metallurgical Technician @ Mintek | Rheology in flotation, Published scholar and UCT Certified practitioner in statistics, data analytics, comminution, mineralogy, flotation, plant survey, and process safety practitioner

  • Education

    • University of johannesburg

      2017 - 2017
      Bachelor of technology - btech metallurgy (extraction) nqf level 7

      Extraction Metallurgy

    • University of johannesburg

      2021 - 2024
      Master of engineering - meng extraction metallurgy nqf level 9

      RESEARCH TITLE: FEASIBILITY STUDY OF RECOVERY OF PLATINUM GROUP METALS FROM HYDROCARBONS CONTAMINATED MINE SLUDGE

    • Tshwane university of technology

      2010 - 2013
      National diploma metallurgical engineering nqf level 6
    • University of johannesburg

      2019 - 2019
      Bachelor of technology - btech quality nqf level 7
    • University of cape town

      2022 - 2024
      Impala graduate development program extractive metallurgy completed

      During this period I took on a series of courses to enhance technical skills and encourage robust technical thinking. I also had an opportunity to successfully lead the UG2 plant survey, analyze survey data, and give the plant improvement recommendations

  • Experience

    • Glencore coal

      Jan 2014 - Jan 2015
      Trainee metallurgist

      • Health and safety Induction• Plant familiarization and learning the processes.• Taking daily production samples.• Laboratory work.• Stabilizing the plant according to analysis results acquired.• Preparing production additive reagents.• Daily production calculations.• Data capturing.• Undertaken project of magnetite consumption reduction in a plant.

    • University of johannesburg

      Feb 2016 - Jun 2016
      Student asistant and tutor ( thermodynamics and work intergrated learning)

      • Script marking• Tutoring• Attending to students concerns• Data capturing• Communicating with students doing in-service training.• Helping in organizing academic events.

    • University of johannesburg

      Feb 2017 - Jun 2017
      Tutor (metallurgical geology)

      • Assisting students in metallurgical geology laboratory with rocks and mineral microscopic identification.• Assisting students with rock identification using hand-lense.• Tutoring the module metallurgical geology.

    • Northam platinum

      Dec 2017 - Jan 2018
      Vacational work (graduate)

      • Undergoing the health and safety induction • Plant process flow familiarization • Learning the flowrates of ores as treated by both Merensky and UG 2 and thus understanding the difference in ore treated from the two and why they are treated differently, with the main factors being the presence of base metals and difference in chromite content of the Merensky reef and UG2. • Understanding backfill, its importance and the source of material used for such purpose • Learning and understanding the importance of safety and wellness of oneself and that of a fellow employee, together with precautions to follow while working in the plant • Understanding risk assessment • Attending safety meetings • Undertaken a laboratory based project which was aimed at finding out the cause of recovering valuable minerals (PGMs) together with undesirable gangue, with the focus being the depressant used which is Carboxyl methyl-cellulose (CMC) at the plant. The CMC was investigated for two possibilities, either its residence time was too long that it ends up aging before flotation process ends which results into it not being able to depress unwanted gangue and thus the gangue floating with PGMs, or over-dosing/under-dosing of the depressant CMC. Show less

    • University of the witwatersrand

      Jun 2019 - May 2021
      Laboratory assistant

      I was working for the faculty of metallurgical and chemical engineering. The tasks included running laboratory analysis equipment such as FTIR, AAS, UV VIS, LECO etc, operating laboratory metallurgical units crushers, pulverizers, vibrating screens, hydrocyclones, denver flotation cells etc., Maintaining Qualit management system in the laboratory (ISO 9001)

    • Implats

      Mar 2022 - Feb 2024
      Graduate metallurgist

      • Carrying plant optimization projects.• Laboratory test work.• Giving technical advice to production stuff.• Anticipating blending ratios for target matte fall.• Liaising with suppliers and auditing them for product conformances.• Liaising with concentrators with regards to concentrates transfers.• Sampling and doing quality checks on products from suppliers to check conformance.• Realizing improvement opportunities and communicating with management.• Developing SWPs that and reviewing existing ones.• Participating in visible felt leadership.• Statistical data analysis and technical reporting of the findings.• Monitoring sampling campaigns and advising on the best practice.• Supporting the metallurgists with plant routine tasks. Show less

    • Mimosa mining company(implats)

      Mar 2023 - Mar 2023
      Visiting graduate metallurgist

      I was part of the commissioning team at MIMOSA, a company at Zimbabwe which Impala is a major shareholder. There I took part in commissioning of a new bigger mill and its subsequent flotation circuit. The purpose of this was to increase plant throughput without compromising plant performance efficiencies.

    • Mintek

      Apr 2024 - now
      Metallurgical technician

      • Lead bench scale tests and pilot plant campaigns• Assist with construction, commissioning and operation of flotation and comminution plants• Conducting laboratory experiments and participating in execution of pilot plants.• Assisting chief investigators with meeting technical targets• Training contract workers and operators on safe and correct use of process units and pilot plant• Independently managing process units that form part of larger projects• Performing calculations in relation to laboratory test work and pilot plant• Laboratory equipment calibration• LIMS• Operation and calibration of rheometer, gas pycnometer, and Malvern sizer.• Data interpretation, report writing and presentation.• Ensuring SHEQ matters are fully complied with Show less

  • Licenses & Certifications

    • Smelt atomizer process control (competency certificate)

      Implats
      Jun 2022
    • Flotaion theory and practice

      University of cape town
      Feb 2022
    • Metal accounting

      University of cape town
      Mar 2023
    • Process mineralogy

      University of cape town
      Aug 2022
    • Trace pge precipitation recovery (competency certificate)

      Implats
      Aug 2022
    • Scientific methods

      University of cape town
      Jun 2023
    • Data analytics

      University of cape town
      Aug 2023
    • Comparative statistics and experimental design for mineral engineers(competency certificate)

      Jktech
      Feb 2023
    • Fundamentals of process safety(competency certificate)

      Engineering council of south africa
      May 2022
      View certificate certificate
    • Smelt arc furnaces process control (competency certificate)

      Implats
      May 2022
  • Volunteer Experience

    • Student debate participant

      Issued by SAIMM - The Southern African Institute of Mining and Metallurgy on Sept 2017
      SAIMM - The Southern African Institute of Mining and MetallurgyAssociated with Sonia Mavhungu