Show process at the knight christensen Chrict ensen milling plant referring co the ne me v groces t to 0 be used in the knight christer sen mil mill the M n ng and engineering world says the ore is mixed with the proper proper ion of sodium chloride and yelte to give the re action and ground to the proper fine ess it is then rno with mill solution uh iv h ch ell is an approximately saturated solution of salts nad and cas 2 and some ilal 1 it may be that no addit addia on of sad sod urn chloride to the theore ore will be necessary is as the saturated solution of chloride sal sil s will carry sufficient chloride to give the proper react on ilie per cent of solution will nill vary fro fron n 6 ato to 15 per cent the moistened ore is then charged to a uniform laye from three to eight en ell n t I 1 b s b th ck on the revolving hearth of a f arnace e heie here it is successively roasted toasted cool ed and discharged tie hearth is 13 perforated and the ori on jarge is subjected to the action of hot air olo in through the perforations the chload zed or is then agi bated with in 11 solution and eno gh bleach ng po ader to dissolve the gold the rte general result is atiat t bat the s di solved by the chlorine the silver eb chloride loride by he other chlorides the opper upper by the adro acid an and d the lead by the a il silt salt solution chis rich solution ol ution is filtered anath and th residue properly washed a ter wh la the metals are ively the gold and silver on copper ind copper aid I 1 ad on 01 iron the acid fumes from tie roasting operations are rec averel in a to er eteng col acted in so ue ne of th pie we imitated mill solution any voli vola ill zed metals also are th s recovered it is stated that lincious nin cious tests gestson on different lif ferent 0 es both on a large and mall scale have been givel give i ex factions as folio follo vs gold 80 to aj 9 er tent cent silver 80 to 91 per cent obder 7 to 93 1 r c nt leal lead 80 0 99 pt p fit cent the process appears to be a mod fi cation of the is 0 of chlorine lorille ch in extraction extrac tin both base and prec pree ous ons metals from the same ore surveyor brooks i as 0 ait oit I 1 t f arora rom so salt t lake durin during the week do don n rome indea ground work at local mines |