Standard No.:	GB 474-2008
Chinese Name:	煤样的制备方法
English Name:	Method for preparation of coal sample
Professional Classification:	D21 Coal analysis methods
Professional Classification:	GB National Standard
ICS Classification:	73.040
Issued by:
Issued on:	2008-12-04
Implemented on:	2009-05-01
Status:	VALID
Replace:	GB474-1996 Preparation of coal sample
Language:	English
File Format:	PDF
Word Count:	14500 words
Price(USD):	435 (USD)
Delivery:	via email in 1-3 business day

This standard specifies terms and definitions, sample constitution, reduction, mixing, division and air-drying for coal sample preparation, the preparation of various coal samples and reserve sample.
This standard is applicable to lignite, bitumite and hard coal.

前言Ⅲ
１　范围１
２　规范性引用文件１
３　术语和定义１
４　制样总则和制样精密度２
４．１　制样总则２
４．２　试样制备精密度２
５　设施、设备和工具２
６　试样的构成３
７　缩分４
７．１　概述４
７．２　缩分后试样的最小质量４
７．３　机械缩分方法５
７．４　人工缩分方法９
８　破碎１２
９　混合１３
１０　空气干燥１３
１１　各种煤样的制备１３
１１．１　煤样的种类１３
１１．２　全水分煤样１３
１１．３　一般分析试验煤样１５
１１．４　共用煤样１７
１１．５　粒度分析煤样１８
１１．６　其他试验煤样１８
１２　存查煤样１８
附录Ａ（资料性附录）本标准与ＩＳＯ１８２８３：２００６（Ｅ）章条编号对照表１９
附录Ｂ（资料性附录）本标准与ＩＳＯ１８２８３：２００６（Ｅ）的技术性差异及其原因２１
附录Ｃ（规范性附录）制样和化验精密度核验和偏倚试验２３
附录Ｄ（规范性附录）煤样的浮选方法２４