GB/T 29341-2022Calcium aluminate for water treatment chemicals (English PDF)

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.

This document replaces GB/T 29341-2012 "Calcium aluminate for water treatment agent", compared with GB/T 29341-2012, except for structural adjustment and In addition to editorial changes, the main technical changes are as follows.

--- Changed normative references (see Chapter 2, Chapter 2 of the.2012 edition);

--- Added terms and definitions (see Chapter 3);

--- Deleted the product classification (see Chapter 3 of the.2012 edition);

--- Changed the product appearance requirements (see 4.1, 4.1 of the.2012 edition);

--- Changed the product index requirements (see Table 1, Table 1 of the.2012 edition);

--- Changed the determination method of arsenic (see 5.10, 5.9 of the.2012 edition);

--- Increased the determination of mercury (see 5.12).

1 Scope

This document specifies the requirements, test methods, inspection rules, and marking, labeling and packaging of calcium aluminate for water treatment agents.

This document applies to calcium aluminate products for water treatment agents.

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 191 Graphical signs of packaging, storage and transportation Preparation of GB/T 601 Standard Titration Solutions for Chemical Reagents

GB/T 602 Preparation of standard solutions for the determination of impurities in chemical reagents Preparation of preparations and products used in GB/T 603 chemical reagent test methods

GB/T 1345-2005 Cement fineness inspection method sieve analysis method

GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories

GB/T 8170-2008 Numerical Rounding Rules and Representation and Judgment of Limit Values

GB/T 9774 Cement Packaging Bag

GB/T 12573 Cement sampling method

GB/T 33086 Determination of Arsenic and Mercury Content of Water Treatment Agent Atomic Fluorescence Spectrometry

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Requirements

4.1 Appearance. white, off-white or gray-yellow powder.

4.2 Calcium aluminate for water treatment agent shall meet the requirements of Table 1 when measured according to the corresponding test method.