美国炼焦煤广泛采用的鉴定方法,其中包括水分、挥发分、灰分、流动度、岩相性质和膨胀、指数的测定方法。煤表面水分的存在增加了煤的运输费用,给炼焦备煤增加了困难,同时,使焦炉的生产能力和炼焦耗热量也增加了。为了减轻这一种不利影响,往煤或煤料中每5%的表面积加入1L油。用挥发分产率来评定副产品和焦炭的产 US coking coal widely used identification methods, including moisture, volatile, ash, fluidity, petrographic properties and swelling, the index of determination. The presence of coal surface moisture increases the transportation cost of coal, which makes it more difficult for cokemaking and coal preparation. Meanwhile, the coke oven production capacity and the heat consumption of coking coal also increase. To mitigate this detrimental effect, add 1 L of oil to every 5% of the surface area of ​​the coal or coal. Volatile production rates are used to rate by-products and coke production