GB/T 23513.5-2009: Chemical analysis methods for germanium concentrate -- Part 5: Determination of silica content -- Gravimetry

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Scope

This part of GB/T 23513 specifies the determination method of silica content in
germanium concentrate.
This part applies to the determination of silica content in germanium concentrate.
Determination range. 0.5%-60%.
2  Methods and principles
Melt the sample with sodium hydroxide and sodium peroxide. Use water to leach. Add
hydrochloric acid to dehydrate, so as silicate is precipitated. Evaporate to remove the
germanium. Add gelatin to condense, filter and separate the silicate. Weigh the mass after
ashing and burning.

Basic Data

Standard ID	GB/T 23513.5-2009 (GB/T23513.5-2009)
Description (Translated English)	Chemical analysis methods for germanium concentrate -- Part 5: Determination of silica content -- Gravimetry
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H66
Classification of International Standard	77.120.99
Word Count Estimation	5,597
Date of Issue	2009-04-08
Date of Implementation	2010-02-01
Regulation (derived from)	National Standard Approval Announcement 2009 No.4 (Total No.144)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the method for the determination of germanium concentrate silica content. This section applies to the determination of germanium concentrate silica content. Measurement range: 0. 5% to 60%.