A few error areas

such as stressing on heat source from other objects

but neglecting heat source of the pulverized coal proper

excessive emphasis on effect of dense and thin separation by the primary air before pulverized coal incoming to the furnace

and undue dependence on the low NOx burners etc.

have been summarized

and some problems being clarified

providing with reference for developing pulverized coal burners and related burning systems in our country.