PENGARUH MEDIA SUSPENSI TERHADAP PROSES ULTRASONIC MILLING PADA PARTIKEL HYDROMAGNESITE[The Influence of Suspension Media on Ultrasonic Milling Process in Particle Hydromagnesite]
Abstract
PENGARUH MEDIA SUSPENSI TERHADAP PROSES ULTRASONIC MILLING PADA PARTIKEL
HYDROMAGNESITE. Telah dilakukan kegiatan penelitian pembuatan hydromagnesite dengan ukuran butiran
nanometer dari mineral dolomit, dengan menggunakan media aquabidest, ethanol absolute dan ethylene glycol.
Pada penelitian ini bahan baku hydromagnesite diperoleh dari proses ekstraksi dari mineral dolomit melalui
proses kalsinasi parsial, hydrasi dan karbonisasi. Percobaan pertama mencari pengaruh ultrasonik milling
terhadap kenaikan temparatur media suspensi dengan tiga media pada konsentrasi 2 % dengan waktu proses 40
menit. Hasil percobaan pertama menunjukkan bahwa proses ultrasonic milling yang paling baik adalah dengan
media ethylene glycol . Hal ini dapat dibuktikan dengan adanya kenaikan temperatur dan hasil analisis SEM.
Hasil akhir percobaan dapat diperoleh kesimpulan bahwa penggunaan media ethylene glycol mampu
menghasilkan partikel ukuran nano dalam bentuk suspensi. Hasil pengukuran dengan Delsa Nano diperoleh hasil
terbaik ukuran butiran (23- 95) nm dengan menggunakan pelarut ethylene glycol dan waktu ultrasonic milling
adalah 16 menit.
Abstract
THE INFLUENCE OF SUSPENSION MEDIA ON ULTRASONIC MILLING PROCESS IN PARTICLE
HYDROMAGNESITE . Research activities have been done to make nano size particles of hydromagnesite from
dolomite mineral with ultrasonic milling equipment in the aquabident media or ethanol abosulte media or
ethylene glycol media. In the research work the raw material of hydromagnesite was obtained from the
extraction process of dolomite mineral with partial calcination, hydrationand carbonization processes. The first
step of the process was runin 40 minute. The first experimental result showed that the best contotion of
ultrasonic millingprocesswas in the ethylene glycol media. It can be evidenced from the increasing of
temperature and result of SEM anaslysis. The final result can be concluded that in the ethylene glycol media can
produced nano particle size of hydromagnesite e e e in the suspension. Particle size analysis using Delsa Nano
shown that the process wich will held in ethylene glycol media with 16 minute for run time will produce that best
size (23 – 95) nm.
Keywords
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