ELECTROMAGNETIC SHIELDING CAPACITY OF NICKEL-LOADED LIGNITE CHAR OBTAINED BY CARBONIZATION AT 900℃

摘要

Several significant findings obtained through this study are as follows: Among coals tested, BL is the most suitable material for the production of crystallized carbon, probably because of the high quantity of oxygen-containing group. Carbonization at 800℃ is adequate for producing crystallized carbon from BL. BL char obtained at 900℃-carbonization has a practical EMS capacity by nickel loading of 2wt%. In the case of co-loading of nickel and calcium, the optimam co-loading existed in terms of the formation of crystallized carbon and EMS capacity, which is believed due to the promoting effect of calcium.