Based on the analysis of the main factors influencing on the ash index, provides that reasonable mining is the key to lift the economic benefit to coal enterprise.
通过对影响煤炭产品灰分指标主要因素的分析，提出实现合理配采，是提高煤炭企业经济效益的关键。
2
Comparisons on coalash thermal analysis curves influenced oxygen atmosphere, inert gas atmosphere and different temperature increasing were made in the paper.
并对氧化气氛和惰性气氛及不同升温速率对煤灰热分析曲线的影响进行了比较。
3
A analysis on counting coal price according to the ash content and calorific value can provide the most reasonable settlement.