Characteristics of seepage of microemulsions in coal, · The raw coal is pulverized, and the coal powder with a particle size of 20 mesh, 120 mesh, and 325 mesh is screened out and pressed with a pressure of 15 MPa for 5 min with a briquette press machine. This process is repeated to obtain multiple briquettes.Victorian Railways hopper wagons, · This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources.Unsourced material may be challenged and removed. The Victorian Railways in Australia have had a vast range of hopper-type wagons over the last century, for transporting anything from grains through fuel to various powders.fine crusher new generation, Dolomite Fine Crusher, Dolomite Fine Crusher Alibaba offers 432 dolomite fine crusher products. About 56% of these are crusher. A wide variety of dolomite fine crusher options are availe to you, such as hammer crusher, impact crusher, and jaw crusher.