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All Journal Jurnal Teknik Industri Terintegrasi (JUTIN)
Rahmad, Alfein
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Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Pengaruh Lime Saturation Faktor (LSF) Terhadap Kualitas C3S Dan Free Lime (FcaO) Pada Produksi Klinker PT. Semen Padang Fithry , Dwi Annisa; Parmanaon, Durain; Rahmad, Alfein; Arbi, Raihan Alvaro
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 2 (2025): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i2.42498

Abstract

PT Semen Padang is one of the largest cement companies in Indonesia, the process at PT Cement Padang consists of Raw Mill, Kiln, and Cement Mill units. One very important process is in the kiln where the process of burning raw mix materials into clinker occurs. Clinker is a product produced by burning a mixture of raw materials in the form of limestone, silica stone, clay, and iron sand which has become a Raw mix at high temperatures. The quality of clinker can affect the quality of cement, good quality will produce cement as desired, such as compressive strength, durability, and appropriate binding time. From this study, the incoming mass balance of 465.4501869 and the outgoing mass balance of 465.4364777 obtained a mass loss of 0.003%, while the incoming and outgoing energy balance is the same, namely 457,422,536.27.  By optimizing clinker production with the influence of lime saturation factor (LSF) on C3S and free lime (FcaO), the results obtained are in accordance with standardization.
Analisis Kualitas Raw Mix dan Optimasi Raw Mill Unit 5 R2 Produksi di PT. Semen Padang Indarung V Fithry, Dwi Annisa; Parmanoan, Durain; Emal, Dini Aulias Sari; Rahmad, Alfein; Batubara, Riski Pathia Mulia
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 2 (2025): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i2.42507

Abstract

In making cement, of course, it has to go through processes that the factory. One of the processes in making cement is grinding and drying raw materials, namely the Raw Mill. Raw Mill is the initial stage in making Raw Mix where in the Raw Mill milling, drying, mixing, and separating materials such as limestone, silica, clay, and iron sand occur. Raw Mix is the main ingredient in making clinker which is the main raw material in making cement. The quality of the Raw Mix is very influential in making cement. Where in the process of making this Raw Mix there are changes in quality. Therefore, researchers want to know the main problems that exist in the differences in the quality of different Raw Mixes. In this case, researchers found several problems, including the quality of the raw materials in storage which was not good, then there were problems in the Raw Mill itself, where there were several inner mill parts that were experiencing wear and tear and had to be replaced. After being replaced, the quality of the Raw Mix is obtained which meets the standards and the total balance value of the Mass Balance is 606124.31 tonnes/hour and the total heat lost is 0.071 KJ.
Evaluasi Cement Mill : Neraca Massa dan Neraca Energi pada Cement Mill Indarung V PT Semen Padang Annisa , Dwi; Parmanaon, Durain; Rahmad, Alfein; Indrianto, Dodi
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 4 (2025): October
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i4.42607

Abstract

PT Semen Padang, as the largest Cement producer in Indonesia, employs a multi-stage Cement production process, comprising a Raw Mill, a Kiln, and a Cement Mill. The Cement Mill process, serving as the final grinding stage, plays a crucial role in Cement production. Here, clinker, gypsum, pozzolan, and limestone are mixed and ground into Cement, facilitated by grinding media and impact or tumbling forces. This study aimed to investigate the hot gas requirements and efficiency of the a Cement Mill unit, with a focus on the mass balance and energy balance of the Indarung V Cement Mill at PT Semen Padang. The results indicated that the mass of air utilized in the a Cement Mill unit was 132.96 tons/hour, while the water requirement was 3.68 tons/hour. The total mass balance value was 336.95 tons/hour, and the total energy balance value was 4,213,679 Kcal/hour.
Analisis Dampak Pengaruh False Air pada Kenaikan Persentase Oksigen (O2) pada Coal Mill di PT Semen Padang Indarung V Annisa , Dwi; Parmanaon, Durain; Rahmad, Alfein; Ankarani, Panca
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 4 (2025): October
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i4.42608

Abstract

This research aims to analyze the impact of False Air on the increase in Oxygen (O2) percentage in the Coal Mill at PT Semen Padang Indarung V. False air or unwanted air leakage is a serious problem that can affect the efficiency of Coal Grinding processes and combustion quality in the Kiln. The research was conducted using operational data collection methods over 6 months, including measurements of O2 levels, Mill Temperature, differential pressure, and Grinding Efficiency. The analysis results show a significant correlation between increased False Air and Increased O2 percentage, where every 1% increase in False Air causes a 0.5% increase in O2 levels and a 2% decrease in Grinding Efficiency. Other identified impacts include an Average Mill temperature decrease of 5°C, a 15% increase in ID Fan power consumption, and a reduction in Grinding capacity of up to 10%. The implementation of improvement programs such as seal replacement, Mill housing repair, and ventilation system optimization has been proven to reduce O2 levels to reach the ideal value of 3-4% and increase grinding efficiency. This research contributes to understanding the influence of False Air on Coal Mill performance and can serve as a reference in preventive maintenance programs to prevent air leakage in Coal Mill systems.
Co-Authors Ankarani, Panca Annisa , Dwi Arbi, Raihan Alvaro Batubara, Riski Pathia Mulia Emal, Dini Aulias Sari Fithry , Dwi Annisa Fithry, Dwi Annisa Indrianto, Dodi Parmanaon, Durain Parmanoan, Durain