YS/T 575.22-2021_English: PDF (YS/T575.22-2021)
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Methods for chemical analysis of bauxite - Part 22: Determination of hydroscopic moisture - Gravimetric method
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YS/T 575.22-2021
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YS/T 575.22-2007 | English | 199 |
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Methods for chemical analysis of bauxite. Part 22: Determination of hydroscopic moisture. Gravimetric method
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YS/T 575.22-2007
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YS/T 575.22-2006 | English | 239 |
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Methods for chemical analysis of bauxite. Determination of hydroscopic moisture in analytical samples. Gravimetric method
| Obsolete |
YS/T 575.22-2006
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Standard ID | YS/T 575.22-2021 (YS/T575.22-2021) | Description (Translated English) | (Methods for chemical analysis of bauxite ores. Part 22: Determination of moisture content. Gravimetric method) | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | Classification of Chinese Standard | D42/Q52 | Classification of International Standard | 71.040.40 | Word Count Estimation | 8,840 | Date of Issue | 2021-03-05 | Date of Implementation | 2021-07-01 | Older Standard (superseded by this standard) | YS/T 575.22-2007 | Drafting Organization | Ministry of Industry and Information Technology | Administrative Organization | Ministry of Industry and Information Technology | Regulation (derived from) | Ministry of Industry and Information Technology Announcement No. 6 of 2021 | Summary | This standard specifies the method for the determination of air equilibrium moisture content in bauxite ore. This standard is applicable to the determination of the moisture content in the process of calibration loss on ignition or sample weighing operation of powdered bauxite ore, concentrate and other powdered bauxite ores. Determination range: ��5.00%. This standard does not apply to the wet water trade settlement process of powdered bauxite ore. | Standard ID | YS/T 575.22-2007 (YS/T575.22-2007) | Description (Translated English) | Methods for chemical analysis of bauxite. Part 22: Determination of hydroscopic moisture. Gravimetric method | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | Classification of Chinese Standard | Q52 | Classification of International Standard | 71.100.10 | Word Count Estimation | 5,513 | Date of Issue | 2007-11-14 | Date of Implementation | 2008-05-01 | Older Standard (superseded by this standard) | YS/T 575.22-2006 | Quoted Standard | YS/T 575.20 | Drafting Organization | Zhengzhou Research Institute Aluminum Corporation of China | Administrative Organization | National Standardization Technical Committee of non-ferrous metals | Regulation (derived from) | NDRC Notice No. 77 of 2007 | Proposing organization | National Nonferrous Metals Standardization Technical Committee | Issuing agency(ies) | National Development and Reform Commission | Summary | This standard specifies the analysis of bauxite samples of moisture content determination. This standard applies to analyzing samples of bauxite Determination of moisture content. Measuring range: �� 5. 0%. Also applied to 1075��C under burn reductions measurement result correction value for the dry basis. | Standard ID | YS/T 575.22-2006 (YS/T575.22-2006) | Description (Translated English) | Methods for chemical analysis of bauxite. Determination of hydroscopic moisture in analytical samples. Gravimetric method | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | Classification of Chinese Standard | D42 | Classification of International Standard | 73.060 | Word Count Estimation | 6,688 | Date of Implementation | 2006-10-11 | Older Standard (superseded by this standard) | GB/T 3257.24-1999 | Quoted Standard | GB/T 3257.22-1999 | Regulation (derived from) | NDRC Notice No. 46 of 2006; NDRC Notice No. 77 of 2007 |
YS/T 575.22-2021
YS
NONFERROUS MEAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 71.040.40
CCS H 30
Replacing YS/T 575.22-2007
Methods for chemical analysis of bauxite - Part 22:
Determination of hydroscopic moisture - Gravimetric
method
ISSUED ON: MARCH 05, 2021
IMPLEMENTED ON: JULY 01, 2021
Issued by: Ministry of Industry and Information Technology
Table of Contents
Foreword ... 3
Introduction ... 6
1 Scope ... 8
2 Normative references ... 8
3 Terms and definitions ... 8
4 Principle ... 8
5 Instruments ... 9
6 Specimen ... 9
7 Test steps ... 9
8 Test data processing ... 10
9 Precision ... 10
10 Test report ... 11
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
"Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents".
This document is Part 22 of YS/T 575 "Methods for chemical analysis of bauxite". YS/T
575 has published the following parts:
- Part 1: Determination of aluminium oxide content EDTA titrimetric method;
- Part 2: Determination of silicon dioxide content - Gravimetric-molybdenum blue
photometric method;
- Part 3: Determination of silicon dioxide content molybdenum blue photometric
method;
- Part 4: Determination of iron oxide content - Dichromate titrimetric method;
- Part 5: Determination of iron oxide content - Orthophenanthroline photometric
method;
- Part 6: Determination of titanium dioxide content - Diantipyrylmethane
photometric method;
- Part 7: Determination of calcium oxide content - Flame atomic absorption
spectrophotometric method;
- Part 8: Determination of magnesium oxide content - Flame atomic absorption
spectrophotometric method;
- Part 9: Determination of potassium oxide and sodium oxide content - Flame atomic
absorption spectrophotometric method;
- Part 10: Determination of manganese oxide content - Flame atomic absorption
spectrophotometric method;
- Part 11: Determination of chromium oxide content - Flame atomic absorption
spectrophotometric method;
- Part 12: Determination of vanadium pentoxide content - N-benzoy-N-
phenylhydroxylamine photometric method;
- Part 13: Determination of zinc content flame - Atomic absorption
spectrophotometric method;
- Part 14: Determination the total content of rare earth oxide - Tribromo-arsenazo
Methods for chemical analysis of bauxite - Part 22:
Determination of hydroscopic moisture - Gravimetric
method
1 Scope
This document specifies the method for determining the air-equilibrium hygroscopic
moisture content in bauxite.
This document is applicable to the determination of the hygroscopic moisture content
of air-equilibrium hygroscopic moisture in the calibration loss on ignition or sample
weighing operation of powdered bauxite ores, such as bauxite ore and concentrate,
which has a determination range of ≤ 5.00%.
This document is not applicable to the hygroscopic moisture trade settlement process
of powdered bauxite ores.
2 Normative references
The contents of the following documents constitute essential clauses of this document
through normative references in the text. Among them, for dated references, only the
version corresponding to the date applies to this document; for undated references, the
latest version (including all amendments) applies to this document.
GB/T 8170 Rules of rounding off for numerical values and expression and
judgement of limiting values
YS/T 575.20 Methods for chemical analysis of bauxite ores - Part 20: Preparation
of pre-dried samples
3 Terms and definitions
There are no terms and definitions that need to be defined in this document.
4 Principle
The specimen that has been left to stand in the air (so that the water content in the
specimen reaches equilibrium with the water content in the air) is placed in a 110 °C ±
5 °C oven and dried, until the mass remains constant. The mass loss before and after
drying is the air-equilibrium moisture content.
5 Instruments
5.1 Plate: Flat bottom, the bottom area of which shall be greater than 100 cm2.
5.2 Dryer: Contains activated alumina (heated at 300 °C ± 10 °C for 5 h before use) or
color-changing silica gel (heated at 120 °C ± 5 °C for 4 h before use).
5.3 Oven: The temperature can be controlled at 110 °C ± 5 °C; air flow is guaranteed
in the oven.
5.4 Analytical balance: The actual graduation value is 0.0001 g.
5.5 Weighing bottle: It has a lid, which is large enough to hold the required specimen
amount.
6 Specimen
The sample is ground to pass through a 150 μm standard sieve.
7 Test steps
7.1 Test material
Take about 10 g of the specimen (6). Place it on a plate (5.1). Spread it evenly and let
it stand in the air in the laboratory for not less than 2 h.
7.2 Parallel test
Perform two tests in parallel and take the average value.
7.3 Determination
7.3.1 Place the weighing bottle (5.5) in an oven (5.3) at 110 °C ± 5 °C for 1 h. Take it
out and place it in a desiccator (5.2) to cool to room temperature. Gently open the lid
and quickly cover it. Weigh it, to an accuracy of 0.0002 g. Record the mass (m0).
7.3.2 Use an analytical balance (5.4) to weigh 2.0 g ± 0.1 g of the pre-air-equilibrium
sample (7.1). Place it in a weighing bottle (7.3.1), that has been dried and weighed to a
constant weight. Record the mass (m1).
7.3.3 Place the opened weighing bottle together with the lid in an oven (5.3). Dry at
110 °C ± 5 °C for 1 h. Take it out. Cover the weighing bottle. Place it in a dryer (5.2) to
......
YS/T 575.22-2007
Methods for chemical analysis of bauxite.Part 22. Determination of hydroscopic moisture.Gravimetric method
ICS 71.100.10
Q52
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 575.22-2006
Methods for chemical analysis of bauxite -
Part 22. Determination of the content of water in the wet
Gravimetric method
Posted 2007-11-14
2008-05-01 implementation
National Development and Reform Commission issued
Foreword
YS/T 575-2007 "chemical analysis of bauxite -" Is the YS/T 575-2006 (formerly GB/T 3257-1999) amendments
A total of 24 parts.
--- Part 1. aluminum oxide content - EDTA titration
--- Part 2. silica content - Gravimetric - molybdenum blue spectrophotometry
--- Part 3. Determination of silica content molybdenum blue photometric
--- Part 4. iron oxide content - Potassium dichromate titration
--- Part 5. Determination of iron oxide content phenanthroline spectrophotometry
--- Part 6. Determination of titanium dioxide content di Zhao DAM spectrophotometry
--- Part 7. calcium oxide content - Flame Atomic Absorption Spectrometry
--- Part 8. magnesium oxide content - Flame Atomic Absorption Spectrometry
--- Part 9. potassium hydroxide, sodium oxide content - Flame Atomic Absorption Spectrometry
--- Part 10. Determination of manganese oxide content by flame atomic absorption spectrometry
--- Part 11. chromium oxide content - Flame Atomic Absorption Spectrometry
--- Part 12. Determination of vanadium pentoxide content of benzoyl phenylhydroxylamine photometric method
--- Part 13. Determination of zinc content by flame atomic absorption spectrometry
--- Part 14. Determination of total rare earth oxide Tribromoarsenazo spectrophotometry
--- Part 15. Determination of gallium oxide content of rhodamine B extraction spectrophotometry
--- Part 16. Determination of phosphorus pentoxide molybdenum blue photometric
--- Part 17. Determination of sulfur content - Combustion - iodometric method
--- Part 18. Determination of total carbon content - Combustion - non-aqueous titration
--- Part 19. Determination of burning weight reduction method
--- Part 20. pre-dried sample preparation
--- Part 21. Determination of organic carbon titration
--- Part 22. Analysis of samples moisture intrudes content - Gravimetric method
--- Part 23. Determination of the chemical composition of the X-ray fluorescence spectrometry
--- Part 24. Determination of carbon and sulfur content infrared absorption method
Part is divided into 22 sections.
The partial replacement of YS/T 575.22-2006 (formerly GB/T 3257.24-1999).
This section is amended to YS/T 575.22-2006, compared with YS/T 575.22-2006, the main changes are as follows.
--- The drying temperature of the sample unified 110 ℃ ± 5 ℃;
--- Increased precision.
The non-ferrous metal part by the National Standardization Technical Committee and centralized.
This part of the Aluminum Corporation of China Zhengzhou Research Institute is responsible for drafting.
This section drafted by the Aluminum Corporation of China Zhengzhou Research Institute.
The main drafters of this section. Zhang North Korea, Guo Yongheng.
The non-ferrous metal part by the National Standardization Technical Committee responsible for the interpretation.
This part of the standard replaces the previous editions are.
--- YS/T 575.22-2006 (formerly GB/T 3257.24-1999).
Methods for chemical analysis of bauxite -
Part 22. Determination of the content of water in the wet
Gravimetric method
1 Scope
This section specifies the content of the determination of water in wet bauxite samples were analyzed.
This section applies to the measurement sample analysis in the content of water in the wet bauxite. Measuring range. ≤5.0%. Also applied to
The measurement results at 1075 ℃ burn reductions corrected to dry basis value.
Note. additional water should be considered when measuring its pre-dried samples were prepared by YS/T 575.20 requirements.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
Dried sample preparation YS/T 575.20 Methods for chemical analysis of bauxite in advance
3 PRINCIPLE OF THE METHOD
Samples at 110 ℃ ± 5 ℃ air drying, record loss of quality.
4 Reagents
Desiccant. Activated alumina, magnesium perchlorate or phosphorus pentoxide (activated alumina before use should be 300 ℃ ± 10 ℃ heated living
Of).
5 Instruments
5.1 weighing bottle. glass or metal, having a diameter of about 50mm.
5.2 plate. flat, bottom plate area of about 20cm2, for balance within the air laboratory samples.
5.3 Oven. temperature can be controlled at 110 ℃ ± 5 ℃.
5.4 dryer.
6 Sample
The sample was ground with a mortar through 150μm sieve and air dried samples. Take about 10g of the sample into the dish (5.2), and
Spread evenly and in the air within the laboratory balance less than 2h.
7 Procedure
7.1 Sample
Weigh 2.0g sample (6), accurate to 0.0001g.
7.2 Determination of the number of
On the same sample should be independently measured twice and averaged.
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