GB/T 6900-2025 Active National standards

GB/T 6900-2025 Chemical analysis of alumino-silicate refractories

GB/T 6900-2025 Chemical analysis of alumino-silicate refractories

Publish Date: 2025-08-29 Implement Date: 2026-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 6900-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Fire-resistant materials

ICS Name: Fire-resistant materials

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Pages: 44 pages

Scope

This document describes the chemical analysis methods for the loss on ignition (LOI), silica (SiO2), alumina (Al2O3), iron oxide (Fe2O3), titanium dioxide (TiO2), calcium oxide (CaO), magnesium oxide (MgO), potassium oxide (K2O), sodium oxide (Na2O), manganese oxide (MnO), phosphorus pentoxide (P2O5), zirconium oxide (ZrO2), and chromium trioxide (Cr2O3).
This document is applicable to the chemical analysis of aluminum-silicon refractory materials (such as pyroxene, bauxite, and other aluminum-silicon raw materials, clay bricks, high-alumina bricks, semi-silica bricks, mullite bricks, corundum bricks, etc.), aluminum-silicon refractory fibers and products, clay and high-alumina slurries, castables, plastics, and other non-shaped refractory materials.

Development Information

Word Count: 73 Thousand words Pages: 44 pages

Replace the following standards

GB/T 6900-2016 Chemical analysis of alumina-silica refractories

Referenced Standards

GB/T 4513.2-2017 Monolithic(unshaped) refractory products—Part 2:Sampling for testing GB/T 4984-2023 Chemical analysis of refractories containing zirconia GB/T 7728-2021 Chemical analysis of metallurgical products—General rule for flame atomic absorption spectrometric methods GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 10325-2001 Shaped refractory products—Sampling and acceptance testing GB/T 10325-2012 Shaped refractory products—Rule of acceptance,sampling and inspection GB/T 12805-1991 Laboratory glassware—Burettes GB/T 12805-2011 Laboratory glassware—Burettes GB/T 12806-1991 Laboratory glassware—One-mark volumetric flasks GB/T 12806-2011 Laboratory glassware—One-mark volumetric flasks GB/T 12808-1991 Laboratory glassware—One-mark pipettes GB/T 12808-2015 Laboratory glassware—One mark pipettes GB/T 17617-1998 Refractory products—Sampling of raw materials and unshaped products GB/T 17617-2018 Rule of sampling and inspection for refractory raw materials GB/T 18930-2002 Terminology for refractories GB/T 18930-2020 Terminology for refractories

Related Standards

GB/T 3002-1982 Replaced

GB/T 3002-1982 Test method for modulus of rupture of refractory products at elevated temperatures

Publish Date: 1982-03-29

GB/T 3994-1983 Replaced

GB/T 3994-1983 Shaped insulating refractory products—Fireclay bricks

Publish Date: 1983-12-12

GB/T 3995-1983 Replaced

GB/T 3995-1983 Shaped insulating refractory products—High alumina bricks

Publish Date: 1983-12-12

GB/T 3996-1983 Abolished

GB/T 3996-1983 Shaped thermal insulating products—Diatomite bricks and shapes

Publish Date: 1983-12-12

GB/T 4984-1985 Replaced

GB/T 4984-1985 Chemical analysis methods of zirconia-alumina refractories

Publish Date: 1985-03-06

GB/T 6900.9-1986 Replaced

GB/T 6900.9-1986 Fireclay and high-alumina refractories—Determination of potassium oxide and sodium oxide content—Atomic absorption spectrophotometric method

Publish Date: 1986-08-26