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GB/T 41741-2022Grading and test method for attapulgite clay (English PDF)

凹凸棒石黏土分级及测试方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 14, 2022

Implementation date

February 1, 2023

Scope

GB/T 41741-2022 is the English-translated version of 凹凸棒石黏土分级及测试方法.

GB/T 41741-2022 sets out how attapulgite clay is graded and tested. It specifies the grading by dynamic viscosity, by decolorization rate and by chemical composition, the sampling requirements and the grading report, and applies to the grading and testing of natural attapulgite clays.

Attapulgite is defined in the document as a hydrous magnesium-rich aluminosilicate clay mineral with a layered chain structure, and an example of its X-ray diffraction pattern is given as a figure.

The sampling and the determinations rest on the standards it cites: GB/T 6003.1 for test sieves, GB/T 6678 for the sampling of chemical products, GB/T 6682 for laboratory water, GB/T 8170 for rounding and limit values and GB/T 14506.1 for adsorbed water. Issued on 14 October 2022, it has applied since 1 February 2023.

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Document preview — GB/T 41741-2022

National Standard of the People's Republic of China

ICS: 73.080
Classification: Q 69

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

1 Scope

This document specifies the dynamic viscosity classification, decolorization rate classification, chemical composition classification, sampling requirements and classification report of attapulgite clay.

This document applies to the grading and testing of natural attapulgite clays.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 6003.1 Technical requirements and inspection of test sieves - Part 1: Wire woven mesh test sieves

GB/T 6678 General Rules for Sampling of Chemical Products

GB/T 6682 Analysis Laboratory Water Specifications and Test Methods

GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values

GB/T 14506.1 Methods for chemical analysis of silicate rocks - Part 1: Determination of adsorbed water

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 Attapulgite

A hydrous magnesium-rich aluminosilicate clay mineral with a layered chain structure.

Note: Attapulgite X-ray diffraction characteristic pattern is shown in Figure 1.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB 46771-2025|GB/T 3286.2-2025|GB/T 45335-2025|GB/T 45458-2025|GB/T 5195.12-2025|GB/T 5195.4-2025

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