Sepn. of super saturated silica using ultrafiltration membrane

A liq. contg. super saturated silica is mixed with silica seed. The resulting liq. in which the total content of silica is 0.05-5% is held at pH 6-10 and above 40 deg.C, to accelerate crystallisation of dissolved silica. The silica prod. is sepd. using an ultrafiltration membrane. The silica seed ma...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	YOSHICHIKA TANAKA, GORO SATO, HIROYASU NISHIDA, MICHIYASU HAGIO, YUUSAKU ARIMA, MICHIO KOMATSU
Format:	Patent
Sprache:	eng ; ita
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A liq. contg. super saturated silica is mixed with silica seed. The resulting liq. in which the total content of silica is 0.05-5% is held at pH 6-10 and above 40 deg.C, to accelerate crystallisation of dissolved silica. The silica prod. is sepd. using an ultrafiltration membrane. The silica seed may be liq. alkali silicate or liq. prepd. by dealkalinating liq. alkali silicate with neutral or ion-exchange resin.