What industry is washed coal
(3) lean coal (PS). Lean coal is a kind of high rank and low volatile bituminous coal and weakly caking property. Coking coal is typical, coking, coke powder generated more.(4) lean coal (SM). Coal is low volatile medium caking coking coal. A certain amount of colloid can be produced during coking. When the single coking is used, the coke with large block, little crack and good crushing resistance can be obtained.(5) coking coal (JM). Coking coal is a kind of bituminous coal with medium caking property and strong caking property. Heat can produce high thermal stability of the body. The coke can be obtained with the advantages of large grain size, few cracks and high crushing strength, and the abrasion resistance is good. However, it is difficult to push coke because of the large expansion pressure.
(1) anthracite (WY). Anthracite has high carbon content, low volatile yield, high density, high hardness and high ignition point. 01 anthracite for the old Anthracite; anthracite coal for the typical anthracite, anthracite coal No. 03 for the young anthracite, No. 02. Such as Beijing, Jincheng, Yangquan were 01, 02, 03 anthracite.(2) lean (PM). Coal is a high degree of coalification coal, non caking or slight caking. Non coking in layered coking furnace. Short flame, burning resistant.
According to the bond can be divided into 5 or 6 grades, namely GR.I. ranged from 0 to 5, said the bond or weakly caking coal; GR.I. > 5 ~ 20, said weakly caking coal; GR.I. > 20 ~ 50, known as the medium weak caking coal; GR.I. > 50 ~ 65, said medium strong caking coal; GR.I. > 65, said the strong caking coal. In the strong caking coal, 25mm or B if Y > > 150% (> 28% for Vdaf, the coal, coal, b > 220%) is called strong caking coal. See also GB5751-1986. The basic characteristics of various types of coal are as follows:
According to the coalification degree of coal, all the coal in our country is divided into three kinds of coal, lignite, bituminous coal and anthracite coal. According to the characteristics of coal gasification and industrial use, the lignite is divided into 2 categories, anthracite is divided into 3 categories. Bituminous coal is more complex, divided into 4 grades according to volatile, that is, Vdaf > ~ ~ ~ 20%, > ~ ~ ~ 20 ~, ~ ~ 28 ~ + 37% and > >, divided into low, medium, medium and high volatile bituminous coal of the four kinds of (37%) ~ ()
