By technique checking every operations of recovery circuit,calculating the classification of spitzkasten and cyclone,thickening efficiency,assaying the ash of every operations.
Application of polyurethane enamel on farmer trucks with key points in the processes of phosphating, priming, atomic ash puttying and enamel spraying is described.
Blast furnace slags were partially replaced by artificial and natural pozzolanic materials, such as pozzolan , fly ash and zeolite,to produce alkali activated slag cement(AASC).
The ash matter of coal is one of main effect factors in various coal researches.In this paper, five methods of acid washing to deash coal were studied.
Most noteworthy are the handsome American mountain ash, or dogberry (S. americana), and European mountain ash (S. aucuparia), also called rowan, or quickbeam.