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Jurnal Penelitian Geosains
Published by Universitas Hasanuddin
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Articles 10 Documents
 1 
PENGARUH KOMPOSISI ASH BATUBARA TERHADAP KUALITAS KLINKER PORTLAND CEMENT PADA PT. SEMEN TONASA UNIT III Dahliar, Nurlianti; Widodo, Sri; Tonggiroh, Adi
Jurnal Penelitian Geosains Vol 10, No 2 (2014)
Publisher : Jurnal Penelitian Geosains

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Abstract

Portland cement clinker is a hydraulic material consists of C3S, C2S, C3A and C4AF. For producing clinker, raw meal have been burn in kiln at temperature 1450oC by using the heat combustion from coal. Clinker burning process is the most important process for the cement industry. In the portland cement industry, coal was not only used as a fuel, but it can also affected the composition of clinker. The coal ash will be mixed with raw meal during clinkerization process. Therefore, when the quality of the coal is not in accordance with the raw meal, it will cause crude clinker. The main purpose of study is to determine the influence of coal ash toward clinker quality. It should be known because portland cement clinker quality of PT. Semen Tonasa have to be on standard according to ASTM C-150-1999 and SNI No. 15-6514-2001. The results of paired T-test analysis showed that the composition of the coal ash which affected the quality of clinker after clinkerization process were LSF, SM, C3S, C2S, and C4AF. Based on the result of simple regression analysis, the amount of coal ash composition toward clinker portland cement quality was minor. LSF had the highest influence up to 0.885%, AM range between 0.1-0.3%, C2S range between 0.01-0.07%, C3S range between 0.01-0.02%, and C4AF was 0.019%.Keywords: clinker, coal ash, quality, C3S, C4AF, portland cement
INTERPRETASI SEBARAN MINERALISASI LOGAM EMAS BERDASARKAN NILAI RESISTIVITY MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI WENNER Malik, Maulana; Nur, Irzal; Ilyas, Asran
Jurnal Penelitian Geosains Vol 10, No 2 (2014)
Publisher : Jurnal Penelitian Geosains

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Abstract

The limitation of data and information about distribution of gold mineralization based on the value of resistivity in the hosted rock on WIUP exploration PT. Indi Karya Anugerah which is located in Long Iram, West Kutai, East Borneo becomes the background of this study. The purpose of this study is expected to find the indications of gold mineralization anomalies based on the geophysical data of geoelectrical resistivity value hosted rock, rock contacts, mineralization and the sub-surface distribution. Vertical geoelectrical resistivity inversion using Wenner configuration for eight line of one with the position of the potential electrode and current electrode arranged from C1-P1-P2-C2. Based on the result of resistivity interpretation using software RES2Dinv showed that the lowest resistivity value of materials is 1.23Ωm till the highest one is 119085Ωm with rocks encountered indicated as Latite which was exposed, had a high resistivity. Outcrop of alteration area was found with relatively low resistivity and based on its physical characteristics as well as indication of gold occurrences in rock samples with grade of 2.01 ppm on line 01-line 02 and 2.27ppm on line 08 which were the analysis result in laboratory.Keywords: Survey review, alteration, resistivity, software RES2Dinv, anomalies
PERANCANGAN SEQUENCE PENAMBANGAN BATUBARA UNTUK MEMENUHI TARGET PRODUKSI BULANAN Aryanda, Dadang; Ramli, Muhammad; Djamaluddin, H
Jurnal Penelitian Geosains Vol 10, No 2 (2014)
Publisher : Jurnal Penelitian Geosains

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Abstract

Sequence is mining forms that show how the pit will be mined from the first stage to the final stages of mine design (pit limit). The purpose of this study is to design sequences mining to monthly production target at Bara 14 Seam C. Plan production targets at this location is 40,000 tons of coal per month and a maximum stripping ratio is 15:1. Analysis data and research design sequence using software Minescape 4.118. The coal reserves which designed based on pit limit is 162,370 tons and 2,425,450 bcm of overburden material. The first sequence has an area of 4.97 ha mine openings with the amount of 40,000 tons of coal and overburden 599,990 bcm. Stripping ratio in this sequence is 15:1. The second sequence has a wide opening 8.44 ha mines the number of 40,000 tons of coal and overburden 599,900 bcm. Stripping ratio in this sequence is 15:1. The third sequence has an area of 11.67 ha mine openings with the amount of 40,000 tons of coal and overburden 599,520 bcm. Stripping ratio in this sequence is 15:1. The fourth sequence has extensive mine openings 11.67 ha with the amount of 40,000 tons of coal and overburden 599,330 bcm. Stripping ratio in this sequence is 15:1. The fifth sequence has extensive mine openings 11.67 ha with the amount of 2,370 tons of coal and overburden 26,710 bcm. Stripping ratio in this sequence is 11:1.Keywords: design, pit limit, sequence, stripping ratio, production target
ANALISIS PENGARUH TIPE BOULDER TERHADAP RECOVERY SCREENING STATION PRODUCT PT. VALE INDONESIA TBK SOROAK Sabang, St. Hastuti; Maulana, Adi; Irvan, Ulva Ria
Jurnal Penelitian Geosains Vol 11, No 1 (2015)
Publisher : Jurnal Penelitian Geosains

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Abstract

Rock size distribution is plays an important role in mining unserpentinized peridotite of Sorowako laterite nickel deposite. The increasing of Rock size will reduce mine recovery and make mining operation become more expensive. To outlining the Rock size distribution, a model generated from RQD have been used to classified rock size distribution into 4 unit is WT 1, WT 2, WT 3, and Infracture. The purpose of this study is provide an integrated and detailed information about the actual size of boulder in West Block and distribution of rock boulder. Research areas are in the concession area of West Block of PT. Vale is Hill X, Hill Y, and Hill Z. The research methods used by based on the method of RQD and data processing base on the drill point. Megascopic observations of rock types in the study area is igneus rock peridotite with composition of mineral dominantly by piroksin, olivine, serpentin and opaq. From the results of the data analysis and identifier of each element laterite zona through surface geological mapping Laterite zone of research area can be divided top soil, limonite zone, saprolite zone and bedrock.Keywords: West block of PT. Vale, Laterite nickel, Unserpentinized peridotite, Rock type.
STUDI PROVENANCE BATUPASIR FORMASI WALANAE DAERAH LALEBATA KECAMATAN LAMURU KABUPATEN BONE PROVINSI SULAWESI SELATAN Ardiansyah, Muhammad; Farida, Mutia; Irvan, Ulva Ria
Jurnal Penelitian Geosains Vol 11, No 1 (2015)
Publisher : Jurnal Penelitian Geosains

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Abstract

Almost of Walanae Formation consist of siliciclastic rocks. Provenance study is needed to determinate the source rocks because these rocks formed from earlier rocks. Administratively, the study area is located in Lalebata area, Lamuru District, Bone Regency, South Sulawesi Province.The purpose of this research is to study the provenance of Walanae Formation sandstone. The method were used measuring section and petrography analysis that used in genetic and empiric classification. Based on thin section analysis by compare between the monoquarst and polyquarst. The sandstone provenance of the area are plutonic igneous rocks, volcanic rocks and metamorphic rocks. The result of this study indicate that provenance of the Walanae sandstone derived from arround Formations are Igneous rocks and metamorphic rocks and included as Recycled Orogen and Mamatic Arc Provenance type.Keywords: Walanae Formation, Provenance, monoquarst, polyquarst, Recycled Orogen, Magmatic Arc Provenance
ANALISIS PENGARUH TIPE BOULDER TERHADAP RECOVERY SCREENING STATION PRODUCT PT. VALE INDONESIA TBK SOROAK St. Hastuti Sabang; Adi Maulana; Ulva Ria Irvan
Jurnal Penelitian Geosains Vol. 11 No. 1 (2015)
Publisher : Jurnal Penelitian Geosains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rock size distribution is plays an important role in mining unserpentinized peridotite of Sorowako laterite nickel deposite. The increasing of Rock size will reduce mine recovery and make mining operation become more expensive. To outlining the Rock size distribution, a model generated from RQD have been used to classified rock size distribution into 4 unit is WT 1, WT 2, WT 3, and Infracture. The purpose of this study is provide an integrated and detailed information about the actual size of boulder in West Block and distribution of rock boulder. Research areas are in the concession area of West Block of PT. Vale is Hill X, Hill Y, and Hill Z. The research methods used by based on the method of RQD and data processing base on the drill point. Megascopic observations of rock types in the study area is igneus rock peridotite with composition of mineral dominantly by piroksin, olivine, serpentin and opaq. From the results of the data analysis and identifier of each element laterite zona through surface geological mapping Laterite zone of research area can be divided top soil, limonite zone, saprolite zone and bedrock.Keywords: West block of PT. Vale, Laterite nickel, Unserpentinized peridotite, Rock type.
STUDI PROVENANCE BATUPASIR FORMASI WALANAE DAERAH LALEBATA KECAMATAN LAMURU KABUPATEN BONE PROVINSI SULAWESI SELATAN Muhammad Ardiansyah; Mutia Farida; Ulva Ria Irvan
Jurnal Penelitian Geosains Vol. 11 No. 1 (2015)
Publisher : Jurnal Penelitian Geosains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Almost of Walanae Formation consist of siliciclastic rocks. Provenance study is needed to determinate the source rocks because these rocks formed from earlier rocks. Administratively, the study area is located in Lalebata area, Lamuru District, Bone Regency, South Sulawesi Province.The purpose of this research is to study the provenance of Walanae Formation sandstone. The method were used measuring section and petrography analysis that used in genetic and empiric classification. Based on thin section analysis by compare between the monoquarst and polyquarst. The sandstone provenance of the area are plutonic igneous rocks, volcanic rocks and metamorphic rocks. The result of this study indicate that provenance of the Walanae sandstone derived from arround Formations are Igneous rocks and metamorphic rocks and included as Recycled Orogen and Mamatic Arc Provenance type.Keywords: Walanae Formation, Provenance, monoquarst, polyquarst, Recycled Orogen, Magmatic Arc Provenance
PENGARUH KOMPOSISI ASH BATUBARA TERHADAP KUALITAS KLINKER PORTLAND CEMENT PADA PT. SEMEN TONASA UNIT III Nurlianti Dahliar; Sri Widodo; Adi Tonggiroh
Jurnal Penelitian Geosains Vol. 10 No. 2 (2014)
Publisher : Jurnal Penelitian Geosains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Portland cement clinker is a hydraulic material consists of C3S, C2S, C3A and C4AF. For producing clinker, raw meal have been burn in kiln at temperature 1450oC by using the heat combustion from coal. Clinker burning process is the most important process for the cement industry. In the portland cement industry, coal was not only used as a fuel, but it can also affected the composition of clinker. The coal ash will be mixed with raw meal during clinkerization process. Therefore, when the quality of the coal is not in accordance with the raw meal, it will cause crude clinker. The main purpose of study is to determine the influence of coal ash toward clinker quality. It should be known because portland cement clinker quality of PT. Semen Tonasa have to be on standard according to ASTM C-150-1999 and SNI No. 15-6514-2001. The results of paired T-test analysis showed that the composition of the coal ash which affected the quality of clinker after clinkerization process were LSF, SM, C3S, C2S, and C4AF. Based on the result of simple regression analysis, the amount of coal ash composition toward clinker portland cement quality was minor. LSF had the highest influence up to 0.885%, AM range between 0.1-0.3%, C2S range between 0.01-0.07%, C3S range between 0.01-0.02%, and C4AF was 0.019%.Keywords: clinker, coal ash, quality, C3S, C4AF, portland cement
INTERPRETASI SEBARAN MINERALISASI LOGAM EMAS BERDASARKAN NILAI RESISTIVITY MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI WENNER Maulana Malik; Irzal Nur; Asran Ilyas
Jurnal Penelitian Geosains Vol. 10 No. 2 (2014)
Publisher : Jurnal Penelitian Geosains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The limitation of data and information about distribution of gold mineralization based on the value of resistivity in the hosted rock on WIUP exploration PT. Indi Karya Anugerah which is located in Long Iram, West Kutai, East Borneo becomes the background of this study. The purpose of this study is expected to find the indications of gold mineralization anomalies based on the geophysical data of geoelectrical resistivity value hosted rock, rock contacts, mineralization and the sub-surface distribution. Vertical geoelectrical resistivity inversion using Wenner configuration for eight line of one with the position of the potential electrode and current electrode arranged from C1-P1-P2-C2. Based on the result of resistivity interpretation using software RES2Dinv showed that the lowest resistivity value of materials is 1.23Ωm till the highest one is 119085Ωm with rocks encountered indicated as Latite which was exposed, had a high resistivity. Outcrop of alteration area was found with relatively low resistivity and based on its physical characteristics as well as indication of gold occurrences in rock samples with grade of 2.01 ppm on line 01-line 02 and 2.27ppm on line 08 which were the analysis result in laboratory.Keywords: Survey review, alteration, resistivity, software RES2Dinv, anomalies
PERANCANGAN SEQUENCE PENAMBANGAN BATUBARA UNTUK MEMENUHI TARGET PRODUKSI BULANAN Dadang Aryanda; Muhammad Ramli; H Djamaluddin
Jurnal Penelitian Geosains Vol. 10 No. 2 (2014)
Publisher : Jurnal Penelitian Geosains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sequence is mining forms that show how the pit will be mined from the first stage to the final stages of mine design (pit limit). The purpose of this study is to design sequences mining to monthly production target at Bara 14 Seam C. Plan production targets at this location is 40,000 tons of coal per month and a maximum stripping ratio is 15:1. Analysis data and research design sequence using software Minescape 4.118. The coal reserves which designed based on pit limit is 162,370 tons and 2,425,450 bcm of overburden material. The first sequence has an area of 4.97 ha mine openings with the amount of 40,000 tons of coal and overburden 599,990 bcm. Stripping ratio in this sequence is 15:1. The second sequence has a wide opening 8.44 ha mines the number of 40,000 tons of coal and overburden 599,900 bcm. Stripping ratio in this sequence is 15:1. The third sequence has an area of 11.67 ha mine openings with the amount of 40,000 tons of coal and overburden 599,520 bcm. Stripping ratio in this sequence is 15:1. The fourth sequence has extensive mine openings 11.67 ha with the amount of 40,000 tons of coal and overburden 599,330 bcm. Stripping ratio in this sequence is 15:1. The fifth sequence has extensive mine openings 11.67 ha with the amount of 2,370 tons of coal and overburden 26,710 bcm. Stripping ratio in this sequence is 11:1.Keywords: design, pit limit, sequence, stripping ratio, production target

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