煤炭分析试验,除少数惯用符号外,均采用各分析试验项目的英文名词的第一个字母或缩略字,以及各化学成分的元素符号或分子式作为它们的代表符号。以下列出煤炭分析试验项目专用符号及其英文和中文名称:
a — maximum contraction,最大收缩度;
A — ash,灰分;
AI — abrasion index,磨损指数;
ARD — apparent relative density ,视相对密度;
b — maximum dilatation,最大膨胀度;
CB — characteristic of char button,(挥发分测定)焦渣特征;
Clin — clinkering rate,结渣率;
CR — yield of coke residue,半焦产率;
CSN — crucible swelling number ,坩埚膨胀序数;
DT — deformation temperature,(灰熔融性)变形温度;
EB — yield of benzene-soluble extract ,苯萃取物产率;
FC — fixed carbon,固定碳;
FT — flow temperature,(灰熔融性)流动温度;
Clin — clinkering rate,结渣率;
GR,1 — caking index,黏结指数;
HA — yield of humic acids,腐植酸产率;
HGI — Hardgrov grindability index,哈氏可磨性指数;
HT — hemispherical temperature,(灰熔融性)半球温度;
M — moisture,水分;
MHC — moisture holding capacity ,最高内在水分;
MM — mineral matter,矿物质;
Pm — transmittance ,透光率;
Q — (quantity of heat )calorific value,发热量;
R — reflectance,反射率;
R.I — Roga index,,罗加指数;
SS — shatter strength,落下强度;
ST — softening temperature, (灰熔融性)软化温度;
Tar — yield of tar ,焦油产率;
TRD — true relative densitv,真相对密度;
TS — thermal stability,热稳定性;
V — volatile matter,挥发分;
Water — total water of distillation,干馏总水(产率);
x — final contraction of coke residue,焦块最终收缩度;
y — maximum thickness of plastic layer,胶质层最大厚度;
a — conversion ratio of carbon dioxide,二氧化碳转化率;
细项目符号:
各项目的进一步划分,采用相应的英文名词的第一个字母或缩略字,标在项目符号的右下角表示。煤炭分析试验涉及的细项目符号有:
b — bomb,弹筒;
f — free ,外在或游离;
inh — inherent,内在;
o — organic,有机;
p — pyrite,硫化铁;
s — sulfate,,硫酸盐;
gr,p — gross ,at constant pressure,恒压高位;
gr,v — gross ,at constant volume,恒容高位;
net,p — net ,at constant pressure,恒压低位;
net,v — net ,at constant volume,恒容低位;
t — total,全;