Resmi, Merlyn Werdi Laksita and Cahyaningrum, Insani (2012) Pabrik Silika dari Abu Sekam Padi dengan Proses Presipitasi. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pabrik Silika yang berkapasitas 15.180 tontahun didirikan di Indramayu Jawa Barat untuk memenuhi kebutuhan di dalam dan luar negeri. Pabrik ini menggunakan bahan baku abu sekam padi kandungan silika 934 dengan proses presipitasi Aldcroft dan tekhnologi Kalapathy. Manfaat dari silika antara lain digunakan untuk bahan industri kaca keramik kosmetik serta bahan campuran pasta gigi. Proses produksi silika secara umum dibagi dalam tiga tahap. Tahap pertama adalah Ekstraksi abu sekam padi dengan solvent NaOH 2N di dalam leaching tank. Tahap kedua yaitu tahap reaksi antara natrium silikat encer 16 asam sulfat encer 38 dan NaCl 363 di dalam reaktor yang menghasilkan slurry. Selanjutnya slurry difiltrasi untuk memisahan partikel silika dari liquid yang dilakukan di dalam rotary drum vacum filter. Tahap ketiga adalah tahap pengeringan di dalam spray dryer. Selanjutnya tahap pengecilan dan homogenisasi menggunakan ball mill dan diteruskan menuju vibrating screen untuk mendapatkan ukuran silika yaitu 200 mesh dengan kemurnian 98 dan impuritis Fe2O3 sebesar 11 kadar air sebesar 02 serta produk samping Na2SO4 sebesar 028. Untuk mencapai kapasitas produksi tersebut digunakan bahan baku 15.76777 tontahun abu sekam padi 2.3999 tontahun NaOH serta 1.4699 tontahun H2SO4. Kebutuhan utilitas pada pabrik silika meliputi air pendingin air umpan boiler dan air proses masing-masing sebesar 94.4295 m3tahun 29.832 m3tahun dan 104.610 m3tahun. Pabrik Silika ini direncanakan akan beroperasi secara semi-kontinyu selama 24 jam hari dan 330 haritahun. ========== Silica plant with the capacity of 15.180 tonyear is located at Indramayu West Java to fulfill the requirement either domestic or export. This plant uses raw material from rice hull ash content of 934 silica with Aldcrofts Precipitation process and Kalapathys technology. The advantages of silica is that can be used as the material in glass industry ceramic industry cosmetic industry and also toothpaste mixture. Generally the process of silica production consists of three stages. The first stage is the extraction of rice hull ash using Natrium Hidroxide NaOH in Leaching tank. The second stage is the reaction between the sodium silicate 16 dilute sulfuric acid 38 and NaCl 363 in the reactor that produce a slurry. The next stage is the filtration. This is the separation stage of silica particle that previously processed in rotary drum vacuum filter. The third stage is drying process in spray dryer. This stage is drainage phase in the air-dried silica particle. The next stage is downsizing and homogenation using ball mill and then directed to vibrating screen to obtain the appropriate size of 200 mesh with the silicas purity of 98 the impurity Fe2O3 of 11 water content of 02 and the other product Na2SO4 of 028. To achieve the capacity of production the used raw materials are 15.76777 tonyear of rice hull ash 2.3999 tonyear of NaOH and 1.4699 tonyear of acid H2SO4. The plant utilities consumption including cooling water boiler feed water and the water process are 94.4295 m3year 29.832 m3year and 104.610 m 3year respectively. Silica plant will operate semi-continuously for 24 hourday and 330 daysyear.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSK 660.294 85 Res p |
| Uncontrolled Keywords: | Abu SekamPadi, Silika, Presiptasi |
| Subjects: | Q Science > QC Physics > QC585.75.S55 Silica |
| Depositing User: | - Davi Wah |
| Date Deposited: | 20 Jun 2019 02:38 |
| Last Modified: | 20 Jun 2019 02:38 |
| URI: | http://repository.its.ac.id/id/eprint/63163 |
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