Standard No.:	GB/T 5449-2015
English Name:	Determination of roga index of bituminous coal
Chinese Name:	烟煤罗加指数测定方法
Chinese Classification:	D21    Coal analysis methods
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2015-05-15
Implemented on:	2015-7-1
Status:	valid
Superseding:	GB/T 5449-1997 Determination of roga index of bituminous coal
Language:	English
File Format:	PDF
Word Count:	5500 words
Price(USD):	130.0
Delivery:	via email in 1 business day

1 Scope This standard specifies principle, apparatus, test procedure, expression of result and method precision for determination of roga index (R.I.) of bituminous coal. This standard is applicable to bituminous coal. 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. GB 474 Method for Preparation of Coal Sample GB/T 483 General Rules for Analytical and Testing Methods of Coal 3 Principle 1 g of bituminous coal sample and 5 g standard anthracite for roga index test are mixed under defined conditions, and the mixture is carbonized rapidly. The crucible coke thus obtained is tested for strength in a drum conforming to certain specifications. The roga index can be calculated from the test results. 4 Apparatus

Foreword II 1 Scope 2 Normative References 3 Principle 4 Apparatus 5 Standard Anthracite for Determination of Roga Index 6 Coal Sample 7 Test Procedure 8 Expression of Result 9 Method Precision 10 Test Report