Active Standard: D409 / D409M - 12
As recommended by producer of HGI SRMs, the requirement in A220.127.116.11 that: , 1 If, after air drying, a feedstock contains greater than 5 % undersize (3.35-mm) [-1/8 in.] or greater than 5 % oversize +63-mm [+2.5 in.], sieve the entire feedstock coal to remove the undersize or oversize. would cause a problem in that 80 and 100 HGI coals contain a significant fraction of -1/8, thereby increasing the amount of stock material by a factor of 4 (estimated). Currently the producer of HGI SRMs is NOT following A18.104.22.168.
Keywordsgrindability; Hardgrove Grindability Index; HGI; pulverization; Sieve analysis--coal/coke; Coal products; Grindability; Hardgrove machine method;
Draft Under Development