The metallization of finished pellets is close to the nature of the coal, it is beneficial effect on the reduction by use high volatile coal.

成品球的金属化率与煤种性质关系密切，选用挥发分高的煤种对还原效果有利。

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In the dry distillation period inside, the volatile coal into small molecule hydrocarbons and exhalation, centralized recovery or improve gas calorific value.

在干馏段内，煤中的挥发分转变为小分子烃类而析出，集中回收或提高煤气热值。

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The application of horizontal dense-dilute technology in some boilers has resolved many problems, such as the fire, self-supporting burning and burn-up problem of low volatile coal.

水平浓淡燃烧技术在一些电站锅炉上的应用，很好地解决了低挥发分煤的着火、稳燃和燃尽的问题。

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Some of the very volatile coal stocks like Alpha Natural Resources ( ANR) and Arch Coal ( ACI) have had some very dramatic, but brief rallies for nimble short-term traders.

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Interestingly, the technology exists to modify that waste heat a tool that could gain ever-increasing credence if natural gas and coal prices turn volatile.

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The background level of tropospheric ozone is inexorably rising as volatile organic compounds are released from burning coal and oil.

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