Show SCIENCE O OP Great areat Advantage to Be Gained by 07 v Classifying Before Ores Or Denver Deaver Mining Reporter j Classification before smelting seems He according to experiments experiment recently made in Germany to be nearly as important as classification before concentration For the orderly progress of work by ma m machinery machinery chinery it ia ii essential es that the conditions under which it works must be as aa uni uniform uniform uniform form as possible po Machinery cannot be expected to be discriminating Many of the Irregularities in the work Ik of the blast blut furnace f are undoubtedly due to the great creat difference In the size of ot the material fed feci to it Great variations in penetrability of gases and distribution of ot heat are among a the worst wont features of rich Irregularities as being the most dif dat difficult to control Again whilst the tb coarse material Is to being fluxed and reduced the fines have bave been smelted and remain too long Ion in the furnace fernace Experiments Ex made by Belani on two furnaces of the same me construction on the same ame material and running one on class claa classified cI material and the other on unclassified tied fled charges gave a noteworthy difference In results The unclassified material was smelted very vel much slower and with a C consumption of fuel IP per cent greater anater than with classified charges The former tOnDer conditions resulted in GOO qs of per r cubic meter the latter in 1000 kp It would appear therefore that there was w wan an enormous difference In favor of class classifying classifying the ore re before smelting |