Coal moisture Understanding

Hebi City, Cheng Instrument Co., Ltd., is engaged in coal quality testing equipment development, production of professional enterprises. Including coal quality laboratory planning and design, fixtures and related products production, installation, commissioning and after-sales service. Businesses take advantage of years of professional accumulation, keeping pace with the times, continue to absorb advanced technology and ideas, devote themselves to the development of coal quality testing equipment automation. Product innovation to meet the needs of our customers. Moisture coal is divided into two, one inherent moisture when water (Minh) is contained by the plant into a coal: two external moisture (Mf), is attached to the coal face and the gap in the process of mining, transportation, etc. moisture. Is the sum of total moisture in coal, regardless of external and internal moisture. In general, the degree of metamorphism of coal, the lower the inherent moisture. Lignite, long-flame coal ordinary high inherent moisture, low lean coal, anthracite inherent moisture. The presence of moisture on the use of coal is extremely unfavorable, it is not only wasting a lot of transportation resources, and when coal as fuel, the coal moisture into steam, burn calories during evaporation: In addition, the moisture on the coking coal also generates some impact. Usually the water every 2% increase, reduce heat 100kcal / kg (kcal / kg): metallurgical coal moisture every 1% increase in coking time to extend the 5 ~ 10min.