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PENGENALAN REFRAKTORI_Purnomo

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3. Jenis Bahan Baku<br />

a. Batuan, mineral dan Kristal apa bedanya ?<br />

b. Batuan : Lempung, Bauxite, Dolomite, Calcite Mineral Quart (SiO2), Corondum (Al2O3),<br />

Periclase (Mgo) Kristal : Cubic, Hexagenal, Triclinic, dll.<br />

c. Bahan baku refraktori adalah mineral / Kristal, mengapa ?<br />

d. Kategori Bahan Baku :<br />

- Oksida alam = Al2O3, Sio2, Mgo…. Dll<br />

- Oksida buatan = Mullite (3 Al2O32SiO2)<br />

Spinele ( Mgo.Al2O3)<br />

- Non Oksida = Graphite ©<br />

Silicon Carbide (SiC)<br />

Carbide (B4c)

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