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GB/T 13242-2017 English PDF

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GB/T 13242-2017: Iron ores -- Low-temperature disintegration test -- Method using cold tumbling after static reduction
Status: Valid

GB/T 13242: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 13242-2017English279 Add to Cart 3 days [Need to translate] Iron ores -- Low-temperature disintegration test -- Method using cold tumbling after static reduction Valid GB/T 13242-2017
GB/T 13242-1991English359 Add to Cart 3 days [Need to translate] Iron ores. Low-temperature disintegration test. Method using cold tumbling after static reduction Obsolete GB/T 13242-1991

PDF similar to GB/T 13242-2017


Standard similar to GB/T 13242-2017

GB/T 10322.5   GB/T 14201   GB/T 13241   GB/T 13240   

Basic data

Standard ID GB/T 13242-2017 (GB/T13242-2017)
Description (Translated English) Iron ores -- Low-temperature disintegration test -- Method using cold tumbling after static reduction
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard D31
Classification of International Standard 73.060.10
Word Count Estimation 14,138
Date of Issue 2017-10-14
Date of Implementation 2018-07-01
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

GB/T 13242-2017: Iron ores -- Low-temperature disintegration test -- Method using cold tumbling after static reduction


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Iron ores - Low-temperature disintegration test - Method using cold tumbling after static reduction ICS 73.060.10 D31 National Standards of People's Republic of China Replacing GB/T 13242-1991 Iron ore crushing test after low-temperature static reduction Use a cold drum method 2017-10-14 Published 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 13242-1991 "iron ore cryogenic pulverization test static reduction after the use of cold drum method," the standard Quasi and GB/T 13242-1991 comparison, in addition to editorial changes, the main technical changes are as follows. --- Modify the test gas and purity requirements; --- Clear test equipment should use the mass flow controller to control gas flow and improve the gas control accuracy requirements; --- Increased the test temperature requirements. This standard is proposed by China Iron and Steel Association. This standard by the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317) centralized. This standard was drafted unit. Anshan City Branch Xiang Instrumentation Co., Ltd., Anshan Iron and Steel Co., Ltd.. The main drafters of this standard. Zhang Dapeng, Zhou Mingshun, Li Aijun, Yang Di light, Wen Yonghui, Zhang Jingxi, Yang Zhili. This standard replaces the standards previously issued as. --- GB/T 13242-1991. Iron ore crushing test after low-temperature static reduction Use a cold drum method Caution --- The use of this standard may involve certain hazardous materials, operations and equipment, but did not for all safety issues related to this Have made suggestions. Before using this standard is responsible for the use of appropriate safety and protection measures, and to ensure compliance with relevant state laws and regulations condition.

1 Scope

This standard specifies the test conditions for low-temperature pulverization of iron ore, test equipment, sample preparation, test procedures, the results of calculations and tests report. Note that the test method is characterized by a fixed bed, with CO, CO2 and N2 was mixed gas isothermal reduction, at room temperature with a drum Chalking test; the sample has a certain range of particle size. This standard applies to the reduction of pulverized index of iron ore (including natural iron ore, sinter, pellets, hereinafter referred to as iron ore) Determination of reduction powderization.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6003.1 Test sieves - Technical requirements and testing - Part 1. Wire mesh sieve test sieves GB/T 6003.2 Test sieves - Technical requirements and testing - Part 2. Metal perforated plate test sieves GB/T 6005 test sieve wire mesh, perforated plate and the basic dimensions of the electroformed sheet sieve GB/T 8170 rounded repair rules and limit values of the representation and judgment GB/T 10322.1 Iron ore sampling and sample preparation methods GB/T 20565 iron ore and DRI terms

3 Terms and definitions

GB/T 20565 defined and the following terms and definitions adapted to this document. 3.1 Reduction powder index reductiondisintegrationindex RDI After the reduction of iron ore through the drum after the test of the degree of chalking, respectively, after the drum test sieve obtained greater than 6.30mm, greater than 3.15mm and less than 500μm mass of the material after reduction and before the drum the total mass of the sample as a percentage of the percentage, and respectively expressed as. RDI 6.3, RDI 3.15 and RDI-0.5.

4 basic principles

Take 500g sample of particle size of 10.0mm ~ 12.5mm, in a fixed bed, at a temperature of 500 ℃, with CO2, CO, N2 composition Of the reducing gas for static reduction.

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