PRODUCTION OF FINE POWDER OF GRANULATED BLASTFURNACE SLAG

PURPOSE:To provide a high fine powdery product which is used for the raw material of high strength cement and the admixture of high strength concrete and has excellent particle size distribution by grinding single material of granulated blastfurnace slag by a vertical type roller mill. CONSTITUTION:...

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Bibliographische Detailangaben
Hauptverfasser:	ETO MICHIYOSHI, SAWAMURA SEISUKE, YASUDO KENICHI, TOMITA SUSUMU, UCHIYAMA SUSUMU, MITSUTA YOSHIHIRO, MIYATA CHIKIO
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL LIME, MAGNESIA MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON MILLING GRAIN PERFORMING OPERATIONS PREPARATORY TREATMENT OF GRAIN FOR MILLING REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a high fine powdery product which is used for the raw material of high strength cement and the admixture of high strength concrete and has excellent particle size distribution by grinding single material of granulated blastfurnace slag by a vertical type roller mill. CONSTITUTION:Feed rate of a raw material, the applied pressure by a roller, air quantity and the number of revolutions of a separator are respectively set in the ranges within 80-50%, 100-200%, 100-80% and 100-130% of ordinary operation. Air velocity of a nozzle is regulated to a range within 40-70m/sec and water is sprayed on the ground material which is circulated in the inside of a mill. Further fineness of powder is regulated to 5000-8000 as Blaine's value.