因为煤的导热性低、蒸馏的速度慢，所以炼焦的过程较慢。
Because of the low thermal conductivity of coal and the slow rate of distillation, coking is a slow process.
论述了陕西省子长气煤在新型直立炉炼焦的工艺过程及炉型特点，分析了产品质量及经济效益。
The coking process of zichang gas coal in the new type of shaft furnace and furnace'e feature are described. The quality of products and economic benefits are analyzed.
介绍了配煤炼焦的意义和在配煤炼焦技术中单种煤的结焦特性。对炼焦煤的煤质评定、配煤方法和质量控制进行了详细的论述。
The meaning of coal blend coking and coking features of each coal are introduced. The coal quality assessment, coal blend ways and quality control are discussed in detail.
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