Based on the analysisof 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
The test and its analysisof which the strength of pulverized coal fly ash (PFA)concrete be raised by use of the activator are introduced in this paper.
本文介绍了使用活化剂提高粉煤灰混凝土强度的试验及其分析。
3
Based on the results of chemical analysisof the coalash, with reference to the standard composition of minerals the content of various mineral phases in the coal ash has been determined.