Hard coal — Froth flotation testing — Part 3: Release evaluation

ISO 8858-3:2004 describes a laboratory method for release evaluation of the froth flotation characteristics of hard coal, of particle size less than 0.5 mm. It is applicable to coal in powder form or in the form of a slurry.

Houille — Essais de flottation — Partie 3: Évaluation des émissions

Črni premog – Preskušanje flotiranja s peno – 3. del: Vrednotenje izpusta

General Information

Status
Published
Publication Date
08-Aug-2004
Current Stage
9093 - International Standard confirmed
Start Date
04-Mar-2009
Completion Date
28-Jul-2021

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INTERNATIONAL ISO
STANDARD 8858-3
First edition
2004-08-15
Hard coal — Froth flotation testing —
Part 3:
Release evaluation
Houille — Essais de flottation —
Partie 3: Évaluation des émissions
Reference number
ISO 8858-3:2004(E)
ISO 2004
---------------------- Page: 1 ----------------------
ISO 8858-3:2004(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

© ISO 2004

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2004 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 8858-3:2004(E)
Contents Page

Foreword............................................................................................................................................................ iv

Introduction ........................................................................................................................................................ v

1 Scope...................................................................................................................................................... 1

2 Normative references........................................................................................................................... 1

3 Terms and definitions........................................................................................................................... 1

4 Principle................................................................................................................................................. 1

5 Reagents................................................................................................................................................ 1

6 Apparatus............................................................................................................................................... 2

7 Sampling and preparation of test sample .......................................................................................... 4

8 Flotation test conditions ...................................................................................................................... 5

8.1 Test temperature................................................................................................................................... 5

8.2 Impeller operating speed...................................................................................................................... 5

8.3 Air flow rate ........................................................................................................................................... 5

8.4 Pulp level................................................................................................................................................ 5

9 Procedure............................................................................................................................................... 5

9.1 Test portion........................................................................................................................................... 5

9.2 Preparation............................................................................................................................................ 5

9.3 Flotation test.......................................................................................................................................... 5

10 Presentation of results ......................................................................................................................... 6

11 Test report.............................................................................................................................................. 7

Bibliography ....................................................................................................................................................... 9

© ISO 2004 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 8858-3:2004(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 8858-3 was prepared by Technical Committee ISO/TC 27, Solid mineral fuels, Subcommittee SC 1, Coal

preparation: Terminology and performance.

ISO 8858 consists of the following parts, under the general title Hard coal — Froth flotation testing:

 Part 1: Laboratory procedure
 Part 2: Sequential evaluation
 Part 3: Release evaluation
iv © ISO 2004 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 8858-3:2004(E)
Introduction

The froth flotation of coal has widespread application for the recovery of fine coal particles and their

separation from unwanted mineral matter. The response of coal to the froth flotation process is measured

initially by a laboratory scale test. ISO 8858-1:1990 provides a means of evaluating the general flotation

characteristics of a coal under a set of specified conditions and will not necessarily indicate the full potential of

that coal. It is accepted that variation of the many parameters in the froth flotation process can be used to

effect the beneficiation of the product. This part of ISO 8858 describes methods of applying certain test

conditions to reveal the relative response of coals to the flotation process.

To facilitate the determination of how a particular coal will respond to froth flotation, a method of controlling the

recovery of froth is used. This is done by inhibiting the process to a degree, determining the rate at which coal

reacts and by progressively sampling the froth. This method provides a basis to vary test parameters to

explore any special flotation characteristics.

This part of ISO 8858 is applicable to a wide range of coals and provides a method of comparison of flotation

behaviour, and will facilitate the exchange of information relating to specific performance. It is expected that

the use of this method will provide a tool for comparison of flotation characteristics.

From the results of the standard test, it is possible to draw evaluation curves similar to those obtained from the

float and sinking of coal.

Because of the high reproducibility of results, the test represents a reliable means of comparing the flotation

response of different samples.
© ISO 2004 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 8858-3:2004(E)
Hard coal — Froth flotation testing —
Part 3:
Release evaluation
1 Scope

This part of ISO 8858 describes a laboratory method for release evaluation of the froth flotation characteristics

of hard coal, of particle size less than 0,5 mm. It is applicable to coal in powder form or in the form of a slurry.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

ISO 1213-1:1993, Solid mineral fuels — Vocabulary — Part 1: Terms relating to coal preparation

ISO 3696:1987, Water for analytical laboratory use — Specification and test methods

ISO 8858-1:1990, Hard coal — Froth flotation testing — Part 1: Laboratory procedure

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 1213-1 apply.

4 Principle

A test portion of coal is mixed with water to form a suspension in the flotation cell, or a test portion of slurry is

added to the cell and diluted. A collector and frother are added, the suspension is conditioned and air is then

introduced to the cell while agitation is maintained by means of an impeller.

To study differing flotation characteristics, the flotation operation is inhibited in two ways, relating to reagent

dosage rate in the first stage of the test and to air flow rate in the second stage.

A number of froth increments are obtained which give spaced points for comparison.

5 Reagents
Use only reagents of recognized analytical grade and the following.
5.1 Water, conforming to grade 3 of ISO 3696.
5.2 Collector, undiluted n-dodecane.
© ISO 2004 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO 8858-3:2004(E)
5.3 Frother.

Prepare a solution of 0,1 % (V/V) 4-methylpentan-2-ol (formerly called methyl isobutyl carbinol or MIBC) by

diluting 1 ml of MIBC to 1 litre using water (see 5.1). All dosages of MIBC stated refer to this solution.

6 Apparatus
6.1 Flotation machine
As described in 6.1 of ISO 8858-1:1990, consisting of a mech
...

SLOVENSKI STANDARD
SIST ISO 8858-3:2005
01-november-2005
ýUQLSUHPRJ±3UHVNXãDQMHIORWLUDQMDVSHQR±GHO9UHGQRWHQMHL]SXVWD
Hard coal -- Froth flotation testing -- Part 3: Release evaluation
Houille -- Essais de flottation -- Partie 3: Évaluation des émissions
Ta slovenski standard je istoveten z: ISO 8858-3:2004
ICS:
73.040 Premogi Coals
SIST ISO 8858-3:2005 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 8858-3:2005
---------------------- Page: 2 ----------------------
SIST ISO 8858-3:2005
INTERNATIONAL ISO
STANDARD 8858-3
First edition
2004-08-15
Hard coal — Froth flotation testing —
Part 3:
Release evaluation
Houille — Essais de flottation —
Partie 3: Évaluation des émissions
Reference number
ISO 8858-3:2004(E)
ISO 2004
---------------------- Page: 3 ----------------------
SIST ISO 8858-3:2005
ISO 8858-3:2004(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

© ISO 2004

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2004 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 8858-3:2005
ISO 8858-3:2004(E)
Contents Page

Foreword............................................................................................................................................................ iv

Introduction ........................................................................................................................................................ v

1 Scope...................................................................................................................................................... 1

2 Normative references........................................................................................................................... 1

3 Terms and definitions........................................................................................................................... 1

4 Principle................................................................................................................................................. 1

5 Reagents................................................................................................................................................ 1

6 Apparatus............................................................................................................................................... 2

7 Sampling and preparation of test sample .......................................................................................... 4

8 Flotation test conditions ...................................................................................................................... 5

8.1 Test temperature................................................................................................................................... 5

8.2 Impeller operating speed...................................................................................................................... 5

8.3 Air flow rate ........................................................................................................................................... 5

8.4 Pulp level................................................................................................................................................ 5

9 Procedure............................................................................................................................................... 5

9.1 Test portion........................................................................................................................................... 5

9.2 Preparation............................................................................................................................................ 5

9.3 Flotation test.......................................................................................................................................... 5

10 Presentation of results ......................................................................................................................... 6

11 Test report.............................................................................................................................................. 7

Bibliography ....................................................................................................................................................... 9

© ISO 2004 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 8858-3:2005
ISO 8858-3:2004(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 8858-3 was prepared by Technical Committee ISO/TC 27, Solid mineral fuels, Subcommittee SC 1, Coal

preparation: Terminology and performance.

ISO 8858 consists of the following parts, under the general title Hard coal — Froth flotation testing:

 Part 1: Laboratory procedure
 Part 2: Sequential evaluation
 Part 3: Release evaluation
iv © ISO 2004 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 8858-3:2005
ISO 8858-3:2004(E)
Introduction

The froth flotation of coal has widespread application for the recovery of fine coal particles and their

separation from unwanted mineral matter. The response of coal to the froth flotation process is measured

initially by a laboratory scale test. ISO 8858-1:1990 provides a means of evaluating the general flotation

characteristics of a coal under a set of specified conditions and will not necessarily indicate the full potential of

that coal. It is accepted that variation of the many parameters in the froth flotation process can be used to

effect the beneficiation of the product. This part of ISO 8858 describes methods of applying certain test

conditions to reveal the relative response of coals to the flotation process.

To facilitate the determination of how a particular coal will respond to froth flotation, a method of controlling the

recovery of froth is used. This is done by inhibiting the process to a degree, determining the rate at which coal

reacts and by progressively sampling the froth. This method provides a basis to vary test parameters to

explore any special flotation characteristics.

This part of ISO 8858 is applicable to a wide range of coals and provides a method of comparison of flotation

behaviour, and will facilitate the exchange of information relating to specific performance. It is expected that

the use of this method will provide a tool for comparison of flotation characteristics.

From the results of the standard test, it is possible to draw evaluation curves similar to those obtained from the

float and sinking of coal.

Because of the high reproducibility of results, the test represents a reliable means of comparing the flotation

response of different samples.
© ISO 2004 – All rights reserved v
---------------------- Page: 7 ----------------------
SIST ISO 8858-3:2005
---------------------- Page: 8 ----------------------
SIST ISO 8858-3:2005
INTERNATIONAL STANDARD ISO 8858-3:2004(E)
Hard coal — Froth flotation testing —
Part 3:
Release evaluation
1 Scope

This part of ISO 8858 describes a laboratory method for release evaluation of the froth flotation characteristics

of hard coal, of particle size less than 0,5 mm. It is applicable to coal in powder form or in the form of a slurry.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

ISO 1213-1:1993, Solid mineral fuels — Vocabulary — Part 1: Terms relating to coal preparation

ISO 3696:1987, Water for analytical laboratory use — Specification and test methods

ISO 8858-1:1990, Hard coal — Froth flotation testing — Part 1: Laboratory procedure

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 1213-1 apply.

4 Principle

A test portion of coal is mixed with water to form a suspension in the flotation cell, or a test portion of slurry is

added to the cell and diluted. A collector and frother are added, the suspension is conditioned and air is then

introduced to the cell while agitation is maintained by means of an impeller.

To study differing flotation characteristics, the flotation operation is inhibited in two ways, relating to reagent

dosage rate in the first stage of the test and to air flow rate in the second stage.

A number of froth increments are obtained which give spaced points for comparison.

5 Reagents
Use only reagents of recognized analytical grade and the following.
5.1 Water, conforming to grade 3 of ISO 3696.
5.2 Collector, undiluted n-dodecane.
© ISO 2004 – All rights reserved 1
...

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