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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Riset Teknologi Pencegahan Pencemaran Industri
Candra Birawidha, David
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Utilization of Iron Ore Slag in The Manufacture of Calcium Silicate Boards Hendronursito, Yusup; Amin, Muhammad; Al Muttaqii, Muhammad; Karo Karo, Pulung; Yulia, Andini; Candra Birawidha, David; Isnugroho, Kusno
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 12 No. 2 (2021)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2021.v12.no2.p25-33

Abstract

This study aims to determine the iron ore slag effect as an additive in particleboard based on the SNI 7705:2011 standard. Iron ore slag comes from the waste processing of iron ore into sponge iron. The iron ore slag is reduced to a size of 200 mesh. Particleboard made with the composition of slag and silica is 0:40, 8:32, 16:24, 20:20, 24:16, 32:8, and 40:0 wt%. Meanwhile, other materials were made permanent, namely PCC cement and lime 16 wt%, coconut fiber 3wt%, and water 3 wt%. They are pressed with 3 tons of pressure for 1 hour using a hydraulic press. Drying at room temperature for one day, under the hot sun for two days, then in an oven at 110 oC for 8 hrs. Analysis of the chemical composition of X-ray fluorescence and X-ray diffraction crystalline phase, SEM-EDS micro-photographs, physical tests including density and porosity, and mechanical compressive strength tests. The dominant composition of SiO2 and CaO affects the formation of silicon dioxide (SiO2), calcium silicate (CaSiO3), and dicalcium silicate (Ca2SiO4) phases. Silica has a positive effect on the compressive strength of particleboard but is different from Ca, which has an impact on reducing the compressive strength. The sem morphology shows that coconut fiber cannot withstand heating at 190 oC and results in agglomeration. The addition of 20% ore slag and silica has met the calcium silicate board SNI 7705-2011. These results can be used to develop slag waste from iron ore processing into much more useful objects.
Karakterisasi Thermal dan Ketahanan Sifat Kimia Refraktori Bata Tahan Api Berbasis Alumina Herdianton, Hecci; Rajagukguk, Tumpal Ojahan; Candra Birawidha, David; Marjuni, Teuku
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 11, No 2 (2025): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v11i2.11501

Abstract

Bata tahan api memiliki peran penting pada dunia Industri seperti industri pengecoran, boiler, inchinerator serta industri lainnya, yang mengalami proses pemanasan pada temperatur tinggi untuk menunjang dan mendorong produktivitas produksi. Bata tahan api yang terkena siklus pembakaran yang terus berulang didalam ruang kerja, sedikit demi sedikit mulai mengalami deformasi volume yang disebabkan stres termal (thermal shock resistance) dan terkena sifat kimia dari cairan seperti terak (slag), deformasi yang  terjadi terus menerus dapat mengakibatkan retak bahkan hancurnya bata tahan api. Penelitian ini bertujuan untuk mendapatkan karakterisasi thermal serta ketahanan sifat kimia pada  bata tahan api. Variabel penelitian memvariasikan komposisi  kaolin, alumina, dan chamotte, V1(K20%, A30%, C50%), V2(K15%, A35%, C50%), V3(K10%, A40%, C50%) dimana setiap variasi dibakar pada temperatur 1200℃. Hasil pengujian analisis karakterisasi  STA dengan perlakuan temperatur 1400℃ terhadap semua sampel, bata tahan api mengalami tranformasi fasa Mullite pada temperatur  1200℃. Pada analisis ketahanan sifat kimia dengan perlakuan temperatur 1150℃ pada bata tahan api secara pengamatan visual diketahui, bata tahan api bereaksi atau terkonsumsi larutan basa natrium hidroksida (NaOH). Berdasarkan hasil penelitian bata tahan api berbasis alumina memiliki kemampuan dominan menahan sifat kimia terhadap serangan sifat asam sulfat (H2SO4), sedangkan karakteristik thermal menghasilkan transformasi fasa Mullite pada temperatur 1200℃ terhadap sampel V3.
Co-Authors Al Muttaqii, Muhammad Herdianton, Hecci Isnugroho, Kusno Karo Karo, Pulung Marjuni, Teuku Muhammad Amin Tumpal Ojahan Rajagukguk Yulia, Andini Yusup Hendronursito, Yusup