Yuniarsih, Pratitis (2018) Analisis Pengaruh Variasi Jenis Agregat dan Modulus Distribusi Ukuran Partikel terhadap Sifat Fisik dan Thermal Refraktori Castable Al2O3-SiO2. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
02111545000043 - Undergraduate_Theses.pdf - Accepted Version Download (5MB) | Preview |
Abstract
efraktori merupakan material keramik yang tahan terhadap temperatur dan beban tinggi bahkan dalam kondisi lingkungan rentan korosi serta abrasi sekalipun sehingga biasa disebut sebagai material tahan api. Oleh karena itu aplikasi refraktori banyak dijumpai pada operasi-operasi yang berlangsung pada temperatur tinggis seperti industri logam, petrokimia, sistem pembangkit dan sebagainya. Castable adalah salah satu jenis refraktori monolitik yang cukup banyak digunakan di industri dimana karakteristik utamanya yaitu distribusi ukuran partikel yang pada dasarnya mengendalikan sifat kemampuan untuk mengalir bersama dengan penambahan bahan-bahan kecil, setting dan kekuatan serta sistem pengikat (binder) yang menentukan sifat-sifat pada temperatur tinggi.
Penelitian ini diawali dengan persiapan material, penyaringan lalu pembentukan. Perancangan percobaan dilakukan dengan metode faktorial berupa dua faktor tiga level. Faktor pertama adalah jenis agregat yang digunakan berupa mullite, bauxite dan white fused alumina. Faktor kedua merupakan berbagai distribusi ukuran partikel ditentukan menurut model Andreassen, dengan modulus distribusi (q) 0,26, 0,28, dan 0,3 untuk tipe vibratable. Pengujian yang akan dilakukan untuk mengetahui sifta fisik dan therml refraktori meliputi uji massa jenis, porositas, kuat tekan, dan konduktivtas panas.
Dari penelitian didapatkan hasil bahwa dari ketiga jenis agregat, white fused alumina memiliki nilai massa jenis, kuat tekan, konduktivitas panas paling tinggi dan nilai porositasnya paling rendah. Sedangkan jenis agregat mullite memiliki nilai massa jenis, kuat tekan, konduktivitas panas paling rendah dan nilai porositasnya paling tinggi. Semakin tinggi nilai modulus distribusi ukuran partikel (qPSD) maka semakin tinggi pula nilai massa jenis, kuat tekan, konduktivitas panas namun nilai porositasnya rendah.
============================================================================================================
Refractories are ceramic materials that are resistant to temperature and high. Therefore, refractory applications are often found in metal industry, petrochemical, generating system and so on. Based on the shape of the refractory is divided into refractory shaped and unformed (monolithic). Castable is one type of monolithic refractory that is widely used in industries where it features to flow along with the addition of small materials, settings and strengths as well as binders that determine properties at high temperatures.
This research was initiated by material preparation, screening and casting. Experimental design is done by factorial method in the form of two factor three level. The first factor is the type of aggregate such as mullite, bauxite and white fused alumina. The second factor is the particle size distribution modulus determined according to the Andreassen model, with the distribution modulus (q) 0.26, 0.28, and 0.3 for the vibratable type. Tests to be performed to determine the physical and thermal properties of refractories include bulk density, porosity, cold crushing strength, and thermal conductivity.
The result of this research are showed that from three different alumina agregates, namely mullite, bauxite and white fused alumina, white fused alumina has the highest bulk density, cold crushing strength, and thermal conductivity but has the lowest porosity. While mullite has the lowest bulk density, cold crushing strength, and thermal conductivity but has the highest porosity. The higher the modulus value of particle size distribution (qPSD), the higher the bulk density value, cold crushing strength,, and thermal conductivity but lowest porosity.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 620.143 Yun a-1 3100018074725 |
| Uncontrolled Keywords: | refraktori; monolitik; castable; Al2O3-SiO2; modulus distribusi ukuran partikel; model Andreassen; refractory; castable; Al2O3-SiO2; particle size distribution; Andreassen model; modulus distribution |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA440 Concrete--Cracking. T Technology > TA Engineering (General). Civil engineering (General) > TA441 Aggregates T Technology > TS Manufactures > TS253 Die-Casting |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Yuniarsih Pratitis |
| Date Deposited: | 26 Mar 2018 02:50 |
| Last Modified: | 24 Sep 2020 08:41 |
| URI: | http://repository.its.ac.id/id/eprint/50684 |
Actions (login required)
 |
View Item |