Show NEW classifier PLACED IN BUNKER HILL MILL A W fahrenwald ore dressing engineer in charge of the united states bureau of mines experiment station in connection with the state university at moscow was in the city Tue tuesday says the wallace miner of the ath he is now engaged in installing z a new type of classifier for flo notation in the bunker hill and sullivan mill and about abou t the middle of the month he will leave for birmingham alabama aa ma to make a special study of concentration of iron ore and if possible devise a process adapted to the ores of that section he expects to be in birmingham about a month and a fiala possibly two months new type classifier the classifier clasi fier being installed at the bunker hill mill is is the first of a new t type y pe devised by mr fahrenwald and should not be confused with the fahrenwald constant density classifier with which the mining public is now quite and familiar this classifier is based upon a new principle is designed especially for flotation while the other cla classifier S 11 now in wide use is designed for table concentration tests les of the new machine give an efficiency rating of 9 97 7 per wit ce i as compared with the usual 70 per cent efficiency of other otlie machines table concentration mr fahrenwald is also the inventor of a new co concentrating licen 6 table the first of which will be placed in the billeke Bil tsuk like effi hill mill this table while having as hig high li or higher e ai chency rating than other standard tables will have five nyeo or x I 1 is ex times their capacity in other words the new table i pecked to do the work of five or six of the ordinary type 7 f ex this is a tremendous advantage both in the mattero matter 0 after ate pense and floor space occupied and it is expected that tha a successful practical demonstration the new franr table will be in great demand |