Significance and Use

These test methods can be used to ensure that the chemical composition of the glass sand meets the compositional specification required for this raw material.

These test methods do not preclude the use of other methods that yield results within permissible variations. In any case, the analyst should verify the procedure and technique used by means of a National Institute of Standards and Technology (NIST) standard reference material or other similar material of known composition having a component comparable with that of the material under test. A list of standard reference materials is given in the NIST Special Publication 260 , current edition.

1. Scope

1.1 These test methods cover the chemical analysis of glass sands. They are useful for either high-silica sands (99 % + silica (SiO ₂ )) or for high-alumina sands containing as much as 12 to 13 % alumina (Al ₂ O ₃ ). Generally nonclassical, the test methods are rapid and accurate. They include the determination of silica and of total R ₂ O ₃ (see 11.2.4), and the separate determination of total iron as iron oxide (Fe ₂ O ₃ ), titania (TiO ₂ ), chromium oxide (Cr ₂ O ₃ ), zirconia (ZrO ₂ ), and ignition loss. Included are procedures for the alkaline earths and alkalies. High-alumina sands may contain as much as 5 to 6 % total alkalies and alkaline earths. It is recommended that the alkalies be determined by flame photometry and the alkaline earths by absorption spectrophotometry.

1.2 These test methods, if followed in detail, will provide interlaboratory agreement of results.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C169 Test Methods for Chemical Analysis of Soda-Lime and Borosilicate Glass

C429 Test Method for Sieve Analysis of Raw Materials for Glass Manufacture

D1193 Specification for Reagent Water

E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves

E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials

E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry

Other Documents

Keywords

chemical analysis; glass sand; referee analysis; routine analysis; Iron oxide content; Loss on ignition (LOI); Referee methods; Routine analysis; Sand; Silica content; Spectrophotometry--atomic absorption; Spectroscopy--atomic absorption; Titania; Titanium oxide content; Total iron; Zirconium oxide content; Alkaline earths/alkalies; Aluminum oxide (Al 2 O 3 ) content; Chemical analysis; Chromium oxide content; Flame emission spectroscopy; Glass sand; High-silica/-alumina sands ;

ICS Code

ICS Number Code 81.040.10 (Raw materials and raw glass)

DOI: 10.1520/C0146-94AR09

ASTM International is a member of CrossRef.

ASTM C146