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Analisis Parameter Kinerja Mesin Granulator dalam Proses Produksi Pupuk NPK Nurlianna Tarigan; Karti Karti; Nelson Silitonga; Immanuel Yorlando Simanjuntak
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.292

Abstract

The process of making NPK fertilizer in granular form is greatly influenced by the performance of the granulator machine used. The granulator plays an important role in producing fertilizer granules with a consistent size, hardness, and homogeneity to meet quality standards and facilitate distribution and field application. This study aims to analyze the performance parameters that affect the efficiency of granule formation in NPK fertilizer and the influence of the granulator on the granule formation process. The research method involved direct observation of the production process and testing the quality of the granules, including particle size distribution, mechanical hardness, and frictional resistance. The results of the study show that, at a granulator rotation speed of 21 rpm and a torque of 28.5 N · m, the NPK fertilizer manufacturing process produces an effective capacity of 24,384 kg/hour. And shows that the more optimal the control of the work parameter settings, the higher the process efficiency and the quality of the NPK fertilizer granules produced.
Analisis Volume Udara yang Dibutuhkan Blower dalam Pemindahan Tepung Tapioka dari Unit Dryer ke Unit Shifter Nurlianna Tarigan; Nelson Silitonga; Ivo Jones Sitorus
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i1.178

Abstract

This study aimed to calculate the volume of air required by a blower to transfer tapioca flour from the dryer unit to the shifter unit in a factory with a production capacity of 35 tons per day. The flour transfer process utilizes a blower to generate sufficient airflow. Still, it often experiences instability caused by factors such as blower speed fluctuations, material load variations, and pipe blockages. The research was conducted over one month using data collection methods that included interviews and direct observation. Analysis results showed that the cross-sectional area of the blower pipe was 0.6358 m², the airflow velocity was 1.517 m/s, and the airflow rate reached 0.965 m³/s. The total air volume required by the blower to move the flour was calculated to be 27,792 m³ per day. The findings highlight the importance of properly regulating and maintaining the blower system to ensure efficiency in tapioca flour production.