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D. Vrkljan, M. Klanfar Tehnologija nemetalnih mineralnih sirovina<br />

Tabela 3 Primjer kemijskog sastava sirovina za portlanski klinker<br />

Udio u rovnoj sirovini [%] Udio u<br />

Komponenta<br />

Vapnenac Lapor Boksit<br />

miješanoj<br />

sirovini [%]<br />

SiO2 0,77 30,51 14,61 13,58<br />

Al2O3 0,26 3,60 50,81 3,87<br />

Fe2O3 0,3 2,24 20,04 1,83<br />

CaO 54,09 32,00 0,35<br />

42,45<br />

(76,5 CaCO3)<br />

MgO 0,91 1,08 - 1,27<br />

TiO2 - - 2,10 0,18<br />

RGN-fakultet Zagreb lipanj 2010.<br />

9

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