AS ISO 12742:2021

$149.01

Copper, lead and zinc sulfide concentrates — Determination of transportable moisture limits — Flow-table method

Identically adopts ISO 12742:2020 for Australia, which specifies a flow-table method for the determination of the transportable moisture limit (TML) of copper, lead and zinc sulfide concentrates, which can liquefy during transport. Applies to the determination of the TML of concentrates containing 10 % to 80 % (mass fraction) of lead, 10 % to 65 % (mass fraction) of zinc or 10 % to 55 % (mass fraction) of copper and TML values in the range 3 % to 28 % (mass fraction). KEYWORDS: Transportable moisture limit testing; TML; Copper sulfide concentrate; Lead sulfide concentrate; Zinc sulfide concentrate

Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
5.12
6 Sampling and sample preparation
6.1 General
6.2 Laboratory sample
6.3 Sample preparation
7 Procedure
7.1 General
7.2 Preparation of test portions 
7.2.1 General
7.2.2 Filling the mould
7.2.3 Tamping pressure
7.2.4 Tamping procedure
7.2.5 Removal of the mould
7.2.6 Dropping the flow table
7.3 Identification of the flow state
7.4 Preliminary flow moisture point 
7.4.1 Preparation of test portion
7.4.2 Determination of preliminary flow moisture point
7.4.3 Addition of water for preliminary flow moisture point test
7.4.4 Treatment of sample received above the flow moisture point
7.5 Main flow moisture point determination
7.5.1 Preparation of test portions
7.5.2 Determination of main flow moisture point
7.5.3 Addition of water for main flow moisture point determination
7.6 Graphical method
7.6.1 Preparation of test portions
7.6.2 Determination of flow moisture point
7.7 Moisture determination
8 Expression of results
8.1 Main flow moisture point
8.2 Flow moisture point determined by the graphical method
9 Validation of main flow moisture point
10 Test report
Annex A
A.1 Scope
A.2 Design requirements for the flow table and frame
A.3 Design requirements for the flow-table mounting
A.4 Flow-table lubrication
A.5 Design requirements for the mould
A.6 Design requirements for the spring-loaded tamper
Bibliography

Cited references in this standard
Content history

[Superseded]

DR AS ISO 12742:2021

Please select a variation to view its description.

Published

04/06/2021

Pages

21

Please select a variation to view its pdf.

AS ISO 12742:2021
$149.01