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GB/T 24515-2009: Iron ores for blast furnace feedstocks -- Determination of the reducibility by the rate of reduction index
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24515-2009 | English | 234 |
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Iron ores for blast furnace feedstocks -- Determination of the reducibility by the rate of reduction index
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GB/T 24515-2009
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Basic data | Standard ID | GB/T 24515-2009 (GB/T24515-2009) | | Description (Translated English) | Iron ores for blast furnace feedstocks -- Determination of the reducibility by the rate of reduction index | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 12,152 | | Date of Issue | 2009-10-30 | | Date of Implementation | 2010-05-01 | | Quoted Standard | GB/T 6730.5; GB/T 10322.1; GB/T 20565; ISO 2597-1-2006; ISO 9035-1989 | | Adopted Standard | ISO 4695-2007, IDT | | Regulation (derived from) | National Standard Approval Announcement 2009 No.12 (Total No.152) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for measuring the relative reduction in the area under simulated blast furnace conditions, the oxygen separation from iron ore out. This standard applies to lump ore, sinter and pellets. | GB/T 24515-2009: Iron ores for blast furnace feedstocks -- Determination of the reducibility by the rate of reduction index
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Iron ores for blast furnace feedstocks. Determination of the reducibility by the rate of reduction index
ICS 73.060.10
D31
National Standards of People's Republic of China
GB/T 24515-2009/ISO 4695.2007
Blast furnace iron ore
Reducing the rate of reduction of measurement expressed
(ISO 4695.2007, IDT)
Posted 2009-10-30
2010-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is equivalent to using ISO 4695.2007 "blast furnace reduction of iron ore was determined by the reduction rate of representation" (in English).
For ease of use, this standard has been modified following editorial and non-technical difference of.
--- "This International Standard" by "this standard";
"." --- With a decimal point instead of a comma as the decimal point, "";
--- Delete foreword international standards;
--- References modify the corresponding national standards.
Appendix A of this standard is a normative appendix, Appendix B is an informative annex.
The standard proposed by China Iron and Steel Association.
This standard by the National Standardization Technical Committee of the reduced iron ore and direct.
This standard is drafted by. Baoshan Iron & Steel Co., Ltd.
Participated in the drafting of this standard. Metallurgical Industry Information Standards Institute, Shangyu Hongxing Machinery Instrument Manufacturing Co.
The main drafters of this standard. Chen Xiaoqi, tao, Li Fengyun, Zhou Xing, Lu Ping, Sun Liang, Wang Han, in a peak, Chen Liang, Zhang come off.
GB/T 24515-2009/ISO 4695.2007
Blast furnace iron ore
Reducing the rate of reduction of measurement expressed
Warning. Use of this standard shall have a person experiences regular lab work. This standard does not point out all possible security issues.
Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This standard specifies the method for measuring the relative reduction in the area under simulated blast furnace conditions, oxygen separation from iron ore out.
This standard applies to lump ore, sinter and pellets.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 6730.5 Determination of total iron ore titanium trichloride reduction method (GB/T 6730.5-2007, ISO 9507.
1990, MOD)
GB/T 10322.1 iron ore sampling and sample preparation method (GB/T 10322.1-2000, idtISO 3082.1998)
GB/T 20565 term iron ore and direct reduced iron (GB/T 20565-2006, ISO 11323.2002, IDT)
ISO 2597-1.2006 iron ore Determination of total iron content - Part 1. tin dichloride reduction titration
ISO 9035. 1989 acid content of ferrous iron content - Titrimetric method
3 Terms and Definitions
This standard is adopted GB/T 20565 in the terms and definitions.
Principle 4
Test sample in a fixed bed at a temperature within 950 ℃, reducing gas with carbon monoxide and nitrogen isothermal reduction, according to a predetermined time interval
Weighing, when the degree of reduction of 65%, the reduction rate is calculated by calculating the O/Fe ratio.
5 sampling, sample preparation and test sample preparation
5.1 Sampling and sample preparation
Sampling and sample preparation of the implementation of GB/T 10322.1.
Pellets, size range and lump ore sinter is 10mm ~ 12.5mm.
Dry sample size in line with the requirements of at least 2.5kg.
Samples at 105 ℃ ± 5 ℃ of oven dried to constant weight before the test sample was prepared and cooled to room temperature.
Note. If two consecutive change in mass of dry sample should not exceed 0.05% by mass of the original sample is considered state of the sample constant weight is reached.
5.2 Preparation of the test sample
Collect ore particles composed of a random sample of the test sample.
NOTE. Hand and dividing recommended GB/T 10322.1, for example, can be used to shrink riffle aliquots.
Prepare a minimum of 5 parts of the test sample from the sample, each about 500g (± 1 pieces of quality), 4 parts for testing, 1 for chemical analysis.
GB/T 24515-2009/ISO 4695.2007
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