Abstract

These test methods cover the chemical analysis of clays used in the manufacture of ceramic whitewares. Determine moisture on the sample in its ordinary air-dried condition. Determine all other percentage compositions on moisture-free samples and report accordingly on a moisture-free basis. Make blank determinations on the reagents for each constituent in the whiteware clay and deduct this blank in each case. The sample shall be heated to a constant weight at a given temperature; the loss in weight is recorded as moisture. For the determination of the silica blank, approximately 0.25 g of alumina should be added as aluminium chloride. The procedure for the determination of iron, aluminium, and titanium oxide blank are presented in details. The procedure for the determination of iron oxide, titania, alumina, lime, magnesia, and alkalies blank are discussed and presented in details.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 These test methods cover the chemical analysis of clays used in the manufacture of ceramic whitewares.

1.2 The analytical procedures appear in the following order:

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

C322 Practice for Sampling Ceramic Whiteware Clays

E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves

Keywords

ceramic whiteware clays; chemical analysis; Alkalies content; Alumina ceramics; Aluminum content; Aluminum oxide (Al 2 O 3 ) content; Ceramic whiteware clays; Chemical analysis; Iron content; Iron oxide content; Lime content; Loss on ignition (LOI); Magnesium oxide (MgO) content; Moisture analysis--ceramic materials/applications; Potassium oxide (K 2 O) content; Silica content; Sodium oxide (Na 2 O) content; Titania; Titanium oxide content;

ICS Code

ICS Number Code 91.100.25 (Terracotta building products)

DOI: 10.1520/C0323-56R11

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ASTM C323