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MENGHITUNG NILAI EFISIENSI THERMAL PADA ALAT GRATE COOLER PT. SEMEN BATURAJA II (PERSERO) TBK Saputra, Muhammad Angga; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.289

Abstract

Artikel ini bertujuan untuk menghitung efisiensi termal pada alat grate cooler di PT Semen Baturaja. Metode yang digunakan adalah Pengambilan data selama 10 hari untuk 10 data. Grate cooler dibagi menjadi 3 bagian. Pada proses pembuatan semen, terdapat suatu standar yang telah ditetapkan untuk menentukan tipe semen yang dihasilkan. Agar dapat menghasilkan semen yang sesuai standar yang telah ditentukan, maka hal yang perlu diperhatikan yaitu berbagai macam aspek dalam proses pembuatannya. Selain hal tersebut juga harus diperhatikan proses pemanasan dan pendinginan dalam proses pembuatan klinker. Pada PT Semen Baturaja (Persero) Tbk ini, klinker adalah produk semen setengah jadi yang kualitasnya harus dijaga sebaik mungkin karena sangat menentukan kualitas produk semen yang diproduksi. Hal yang harus diperhatikan dalam pembuatan klinker yaitu selain pembakaran untuk membentuk senyawa-senyawa yang terkandung di dalamnya juga pendinginan yang terjadi pada klinker (terak) tersebut. Proses pendinginan terak tersebut menggunakan metode quenching (pendinginan secara mendadak). Proses pendinginan terak ini dilakukan di dalam alat Grate Cooler, dimana media pendinginnya adalah udara yang didistribusikan oleh fan/blower. Alat Grate Cooler bekerja mendinginkan terak yang keluar dari kiln bersuhu 1350 oC menjadi ±100 oC. Terak yang didinginkan akan berbentuk granular yang memiliki pori-pori besar sehingga mempengaruhi kemudahan penggilingan terak di dalam Cement Mill. Karakteristik terak yang dihasilkan ini sangat dipengaruhi oleh proses pendinginannya dan kemudahan penggilingan terak ini sangat mempengaruhi kualitas akhir dari semen, sehingga diperlukan efisiensi termal yang tinggi pada alat untuk menghasilkan terak yang baik. Kata Kunci : Efisiensi Termal, Grate Cooler, Neraca Massa dan Panas
EVALUASI KINERJA ALAT MILL FAN DI CEMENT MILL PADA PT SEMEN BATURAJA PERSERO Tbk. Sari, Ricka Puspita; Safaruddin, Safaruddin; Anugrah, Rendotian
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.293

Abstract

At PT. Semen Baturaja has a series of routine evaluation activities to determine the performance/performance of the equipment contained in the cement mill of the Baturaja Factory. In the cement mill there are various kinds of tools that are used, one of which is a mill fan. Mill fan is a tool used to generate air flow in the mill air flow system so that the milling process, moisture reduction, separation, and material transport take place perfectly. From this understanding, it can be analyzed that the mill fan is a tool used to circulate mill air flow. Keywords: PT. Semen Baturaja, Evaluation, Mill fan,Cement Mill
MENGHITUNG EFISIENSI MILL FAN YANG TERDAPAT DI PABRIK BATURAJA II PT SEMEN BATURAJA (Persero) Tbk. PADA PROSES CEMENT MILL YANG DITINJAU DARI PEMAKAIAN ARUS LISTRIK Hidayat, M. Taufik; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.295

Abstract

PT Semen Baturaja (Persero) Tbk, is a company that produces cement located in several areas on the island of South Sumatra and one of its largest factories is located in the Baturaja area, Ogan Komering Ulu. PT Semen Baturaja has several stages, namely: the mining process, the grinding and drying process of raw materials, the raw meal burning process, the clinker grinding process, and the cement bagging process. At the stage of grinding the clinker occurs in the cement mill. The cement mill tool is assisted by a mill fan which functions to generate air flow in the mill air flow system so that the milling process, moisture reduction, separation, and material transport take place perfectly. To find out and ensure the performance of the operating tool, namely the mill fan, is functioning properly, an efficiency calculation is carried out. The calculation of mill fan efficiency obtained from 10 consecutive days of data from the Central Control Room (CCR) is 77.580%; 77.741%; 78.780%; 86.457%; 81.893%; 79.238%; 76.255%; 78.078%; 77.460%, 75.497%. The increase and decrease in efficiency is caused by the difference in the amount of cement production each day and the low impeller speed.
ANALISIS ENERGI DAN EKSERGI PADA SISTEM ROTARY KILN RKC-2 PT. SEMEN BATURAJA Sati, Adinda Lara; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.300

Abstract

The cement industry is one of the energy-intensive industries because of the large amount of energy used. The cost used for energy consumption in a cement factory is about 20-30% of the total cost of cement production (UNIDO, 1994). In the cement production process, the raw mill preparation and clinker production stages are the stages that require the most energy. Energy conservation in the rotary kiln system affects the optimization of production costs. One method of identification on energy conservation is through energy and exergy analysis. In this analysis, energy loss and exergy were identified based on the calculation of mass balance, energy, enthalpy, entropy and exergy. Based on the analysis, the value of energy efficiency is greater than exergy efficiency. The energy and exergy efficiency of the rotary kiln system are 79.40% and 57.10%, respectively. The energy and exergy efficiency of the rotary kiln unit are 64.93% and 50.48%, respectively. The exergy efficiency value in the rotary kiln system is greater than the rotary kiln unit because there is energy utilization at the outlet of the suspension preheater and cooler. The greatest energy and exergy efficiency occurred at the maximum clinker mass flow rate and minimum coal mass flow rate. Irreversibility of rotary kiln units and systems RKC-2 PT. Semen Baturaja Palembang are 49.52% and 42.9%, respectively.
MENGHITUNG EFISIENSI THERMAL PADA ALAT VERTICAL RAW MILL DI PABRIK BATURAJA II PT SEMEN BATURAJA (PERSERO) TBK. Alfiansyah Miftahul Rizky; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.305

Abstract

In the process of making cement at PT Semen Baturaja (Persero) Tbk. There are seven processes that occur, namely the mining process (quarry), the grinding process (crushing) and drying (drying), the raw meal burning process into clinker, clinker cooling, clinker grinding, and the packing process. The vertical raw mill is the main tool used in the process of grinding and drying raw materials using a drying medium, namely hot air from kiln exhaust gases. In this milling and drying process, limestone, clay, silica sand and iron sand, will produce a product, namely raw meal. In order for the reactivity of the material to be achieved in the next process, the standard of fineness of raw meal must have a sieving above 90µ (14-20%). In the drying process, the raw mill can dry materials that have a moisture content of 15% to <1%. The maximum moisture content is permitted at 1%, this is important to anticipate possible obstacles in transportation and to improve thermal efficiency. Efficiency is a measure in comparing a process of using input energy with the realized use or output of a process of activities carried out as well as the sources and energy used. In vertical raw mill equipment, thermal efficiency needs to be calculated to determine whether the quality of the heat used is maximal, where in the vertical raw mill the standard thermal efficiency value has been set in the range of 85 - 100%. In the results and discussion, the highest thermal efficiency value on the vertical raw mill tool is 96.28% with a heat loss value of 3.71%, while the lowest thermal efficiency value obtained is 87.90% with a heat loss value of 12.09%. For the heat balance, the highest total vertical raw mill heat balance is 33,922,195.16 kcal and the lowest is 22,506,739.34 kcal.
ANALISIS KINERJA ALAT CALSINER DITINJAU DARI EFISIENSI THERMAL DI PABRIK BATUARAJA II PT. SEMEN BATURAJA (PERSERO) TBK. Tiara, Anindita Bunga; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.306

Abstract

Calciner is a heating aid used in all modern rotary kiln products. The calciner is a preheating device and a place for the reaction to occur preliminary calcination before entering the kiln. Calciner has been operating at the right time long enough, considering its use, it is necessary to analyze the efficiency Calciner tool performance. Calciner tool which is a tool that is used as a place for the process of calcining limestone and burning fuel simultaneously in a cement factory. The addition of calciner to the cement plant aims to reduce the burning zone load in the kiln because the fuel to the calciner reaches 60%, increases the production capacity of the kiln, and makes the operation of the kiln more stable. The calciner uses coal as fuel which is in contact with hot air from the kiln (tertiary air) coming from the grate cooler. In the development of this calciner system, each cement plant has a different design, but has the same goal, namely to increase the degree of calcination and increase production capacity and reduce energy consumption, especially heat energy used in the kiln. The purpose of using the Calciner is to reduce the burning load of the rotary kiln. at PT Semen Baturaja (Persero) Tbk. using a preheater with 5 levels, where the calciner is placed after cyclone IV then the calciner results to cyclone V. The calciner has a total height of 59.75 meters with an inner diameter of 7.6 meters. At the top and bottom are cone-shaped where the top cone is larger in diameter than the bottom cone. This is because the feed is in the form of solids and at the bottom enters the tertiary air in the form of gas at PT Semen Baturaja (Persero) Tbk.
EVALUASI KERJA PADA ALAT GRATE COOLER DI PABRIK BATURAJA II PT SEMEN BATURAJA (PERSERO) TBK Tanthowy Z, Thoriq Verel; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.309

Abstract

Semen Baturaja (Persero) Tbk. is one of the industries in Indonesia which is engaged in cement. The cement production process at PT. Semen Baturaja (Persero) Tbk. divided into several stages, namely mining of raw materials, breaking of raw materials, drying of raw materials, mixing of raw materials, burning and cooling, grinding of semi-finished materials, and bagging cement. PT. Semen Baturaja (Persero) Tbk. (Persero) produces cement with raw materials in the form of limestone and clay obtained from the Company's limestone and clay mining site which is located about 1.2 Km from the factory in Baturaja, South Sumatra. Grate cooler is a type of clinker cooler that serves to cool the clinker quickly (quenching) in the cement production process. The cooling process in the grate cooler is an important part in determining the quality of cement. Clinker cooler efficiency is the ratio between the amount of heat returned to the kiln along with secondary air as kiln fuel air and tertiary air as calciner fuel to the amount of heat stored in the clinker when it enters the cooler inlet. The Grate Cooler is one of the main tools in the manufacturing process. cement. In the cement manufacturing process, there is a standard that has been set to determine the type of cement produced. In order to produce cement according to predetermined standards, the things that need to be considered are various aspects in the manufacturing process, including the composition of the materials used in the process. In addition to this, the heating and cooling processes in the clinker manufacturing process must also be considered.  
MENGHITUNG SPESIFIC ENERGY CONSUMPTION CALCINING ZONE ROTARY KILN PT. SEMEN BATURAJA (PERSERO) TBK. Panjaitan, Roma Tua; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.311

Abstract

One of the equipment in the factory that uses a lot of energy is a rotary kiln. Rotary Kiln is a cement product mixture (clinker) burner which is used to raise materials to hig temperatures 9calcination) in a continous process. it can be analyzed that the more coal and the higher the net heating value of the coal supplied for combustion in the rotary kiln burner, the higher the specific energy consumption value because the heat of flue gas from burning coal entering the calcining zone of the rotary kiln will be even greater.From the calculations that have been done, it can be evaluated that the specific energy consumption of rotary kiln calcining zone is influenced by several factors, including; the amount of feed that enters the calcining zone, the amount of fuel (coal) used, the temperature of the kiln outlet gas, air and steam leaks in the kiln wall including heat loss that occurs in the kiln. (Adam Atmaca, 2014). The specific energy consumption calcining zone of the rotary kiln after the calculation can be categorized as good for the size of the heating room which has the most heat loss possibilities. However, the specific energy consumption of the rotary kiln calcining zone can still be maximized by improvising the components of the equipment, based on the relatively large percentage of heat loss, it can be done by controlling the coal feed, excess O2 according to the needs of the mass entering the kiln to be heated so as to minimize heat loss. in the calcining zone of the rotary kiln.
MENGHITUNG NILAI EFISIENSI THERMAL PADA ALAT GRATE COOLER PT. SEMEN BATURAJA II (PERSERO) TBK Saputra, Muhammad Angga; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.289

Abstract

Artikel ini bertujuan untuk menghitung efisiensi termal pada alat grate cooler di PT Semen Baturaja. Metode yang digunakan adalah Pengambilan data selama 10 hari untuk 10 data. Grate cooler dibagi menjadi 3 bagian. Pada proses pembuatan semen, terdapat suatu standar yang telah ditetapkan untuk menentukan tipe semen yang dihasilkan. Agar dapat menghasilkan semen yang sesuai standar yang telah ditentukan, maka hal yang perlu diperhatikan yaitu berbagai macam aspek dalam proses pembuatannya. Selain hal tersebut juga harus diperhatikan proses pemanasan dan pendinginan dalam proses pembuatan klinker. Pada PT Semen Baturaja (Persero) Tbk ini, klinker adalah produk semen setengah jadi yang kualitasnya harus dijaga sebaik mungkin karena sangat menentukan kualitas produk semen yang diproduksi. Hal yang harus diperhatikan dalam pembuatan klinker yaitu selain pembakaran untuk membentuk senyawa-senyawa yang terkandung di dalamnya juga pendinginan yang terjadi pada klinker (terak) tersebut. Proses pendinginan terak tersebut menggunakan metode quenching (pendinginan secara mendadak). Proses pendinginan terak ini dilakukan di dalam alat Grate Cooler, dimana media pendinginnya adalah udara yang didistribusikan oleh fan/blower. Alat Grate Cooler bekerja mendinginkan terak yang keluar dari kiln bersuhu 1350 oC menjadi ±100 oC. Terak yang didinginkan akan berbentuk granular yang memiliki pori-pori besar sehingga mempengaruhi kemudahan penggilingan terak di dalam Cement Mill. Karakteristik terak yang dihasilkan ini sangat dipengaruhi oleh proses pendinginannya dan kemudahan penggilingan terak ini sangat mempengaruhi kualitas akhir dari semen, sehingga diperlukan efisiensi termal yang tinggi pada alat untuk menghasilkan terak yang baik. Kata Kunci : Efisiensi Termal, Grate Cooler, Neraca Massa dan Panas
EVALUASI KINERJA ALAT MILL FAN DI CEMENT MILL PADA PT SEMEN BATURAJA PERSERO Tbk. Sari, Ricka Puspita; Safaruddin, Safaruddin; Anugrah, Rendotian
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.293

Abstract

At PT. Semen Baturaja has a series of routine evaluation activities to determine the performance/performance of the equipment contained in the cement mill of the Baturaja Factory. In the cement mill there are various kinds of tools that are used, one of which is a mill fan. Mill fan is a tool used to generate air flow in the mill air flow system so that the milling process, moisture reduction, separation, and material transport take place perfectly. From this understanding, it can be analyzed that the mill fan is a tool used to circulate mill air flow. Keywords: PT. Semen Baturaja, Evaluation, Mill fan,Cement Mill
Co-Authors Alfiansyah Miftahul Rizky Fachry Abda El Rahman M. Taufik Hidayat Nurwijayanti Panjaitan, Roma Tua RR. Ella Evrita Hestiandari Saputra, Muhammad Angga Sari, Ricka Puspita Sati, Adinda Lara Tanthowy Z, Thoriq Verel Tiara, Anindita Bunga