Full text of "Holderbank Cement engineering book" Internet Archive. For grinding coal, slag, cement, etc., adaptations to mills and systems have to be .... flow rate must be selected to achieve a dust load of 500 600 [g/m 3 ] raw .... gas speeds wider PSD, resp. steeper or flatter slopes in the RRSBchart. ... Partial Load The tendency in modern cement plant concepts is to adapt the ...