Rifai Abdullah

Rifai abdullah

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location of Rifai AbdullahMedan, North Sumatra, Indonesia
Followers of Rifai Abdullah1000 followers
  • Timeline

  • About me

    Nickel Hydrometallurgy | Tsingshan Holding Group | Chemical Engineer

  • Education

    • Universitas malikussaleh

      2019 - 2023
      Gelar sarjana chemical engineering 3,70

      I am active in organizational activities in my department. I have been a mentor in campus introduction activities for new students.Undergraduates thesis:- Simulation of CO2 Gas Adsorption with Coal Fly ash Adsorbent in Fixed Bed Column Using CFD- Pre-fabrication of Ethylene Glycol Plant From Ethylene Oxide And Water By Non-Catalytic Hydrolysis Process, Capacity 300,000 Tonnes/Year

  • Experience

    • Pt. bumi sama ganda

      Jul 2022 - Sept 2022
      Process assistant

      • Make improvements to increase boiler efficiency by 81% by analyzing the use of fiber and shell fuel ratios of 90: 10 at 6 tons of fuel consumption• Observe and comprehend the stages of oil palm production from the plantation to the mill.• Engage in quality control activities to ensure products conform to the set standards.• Attend regular meetings to discuss and contribute to process improvement

    • Pt pupuk iskandar muda

      Dec 2022 - Jun 2023
      Staff operator

      • Perform field work, such as routine record area activities, worksite security, monitoring fieldwork, and participating in plant startup and shutdown.• Design the Shell and Tube Heat Exchanger using Fusion 360 Drawing Software by following the design dimension data in the P&ID.• Simulate the ammonia formation reaction scheme using the Aspen HYSYS software.• I participated in the technical design and engineering process of the early stage FEED.• Capable of reading P&IDs and understanding the use of control tools on equipment. Show less

    • Chemengexpert.com

      May 2023 - now
      Independent blogger

      • Run a personal blog focusing on Aspen HYSYS simulations and industry cases.• Mastered technical writing and the ability to explain complex concepts in a way that non-technical readers understand.• Implement SEO strategies to improve the visibility and appeal of content in search engines.• Build and maintain relationships with readers through comments, emails and other interactions to create a loyal community.• Using analytics tools to monitor content performance and adjust strategies based on data to improve results.• Manage related social media accounts to promote blog content and increase interaction with audiences Show less

    • Pt. tirta fresindo jaya (mayora group)

      Mar 2024 - Sept 2024
      Unit head development program quality control

      • Led and managed scheduling and task distribution for a 7-member operational team, ensuring optimal efficiency and collaboration across two factories• Increased production achievement by 90% through improvements to the auto-drain system in the ozone tank, resulting in a reduction of rejected products due to quality non-conformities• Implement and apply the Halal, GMP, 5R, FSSC 22000, Green Industry, and SMK3 standards.• Maintain the conductivity of the sanitizing solution at 12.2 μS/cm to ensure the chemical concentration to disinfect the entire WTP storage meets the 1.05% standard.• Compare two types of chlorine disinfectants based on chemical characteristics, turbidity, conductivity, and microbiological content.• Improving the auto drain system in the azone storage tank to limit contact time between ozone and compounds that may cause out-spec parameters.• Calculate the adequacy of deep well water and external water for consumption requirements in line production.• Calculate the TDS (total dissolved solids) value based on the water formulation used during plant running.• Ensure that finished goods placed on hold owing to product non-conformity have a recognizable identity Show less

    • Indonesia weda bay industrial park (iwip)

      Nov 2024 - now

      • Supervise shift operation in solvent extraction plant, covering saponification, extraction washing, stripping, anti-iron, anti-cobalt, and organic puritication units• Monitor and control key parameters (pH control 3.5-5.5, O/A ratio 0.8-1.0, residence time, droplet size) to ensure extraction efficiency and separation quality• Handle operational troubleshooting in mixer-settler units, filter press, and solvent recovery system.• Prepare log sheets and structured SOP for operators to reduce human error and improve inter-shift communication. Train and mentor junior operators in metal extraction reactions, phase separation, and safety patrol procedures.• Provide on-job training for operators on chemical reactions, safe operation, and troubleshooting.• Ensure proper handling of acids (H2SO4, HCI), alkali (NaOH), and solvents to prevent incidents.• Monitor effluent from washing/back-extraction to ensure compliance with environmental standards.• Participate in incident investigation, root cause analysis, and continuous safety improvement Enforce safety patrol protocols around tanks, settlers, and acid storage• Build cross-functional collaboration with maintenance, utility, and lab analysis teams.• Ensure all team members comply with SOP, Work Permit System, and Safety Standards(LOTO, confined space, fire prohibition zones)• Support mass balance and reconciliation of Ni/Co/Mn/Fe across extraction circuits• Monitor reagent consumption (NaOH, H2SO4, HCI, kerosene) and propose optimization toreduce cost.• Ensure stripping/back-extraction solutions (Cu/Mn/Zn/Fe) are properly routed to oil removal processes. Show less

      • General Foreman - Extraction Division (HPAL Technology) at Tsingshan Holding Group

        Jul 2025 - now
      • Senior Officer Quality Control at Electrowinning processing

        Nov 2024 - Jul 2025
  • Licenses & Certifications

    • Pt. pupuk iskandar intern

      Pt. pupuk iskandar
      Aug 2023
    • Basic training for plant design simulation (process simulation and flare hydraulic study) in oil & gas industry

      Anak teknik indonesia
      View certificate certificate
    • Sertifikat magenta bumn

      Kementerian bumn
      Sept 2023
      View certificate certificate
    • Training process simulation from basic to intermediate level

      Anak teknik indonesia
      Mar 2024
      View certificate certificate