. Mining and Scientific Press . re. 2RCE+ 0,+ Heat fc? 2R0 + Cl2As the charge passes through the furnace, the temper-ature continues to increase, and part of the salt rapidlyvolatilizes as sodium chloride, while the remainder entersinto the ehloridizing reactions. The nsult is that themetallic chloride, which does doI evaporate rapidly in thezones of lower temperature, is conveyed into the hotterregions, where the ehloridizing atmosphere becomes would not require a strong imagination to conceive adecomposition or reversal of reaction, in which the metalwould be left with the calcine as
. Mining and Scientific Press . re. 2RCE+ 0,+ Heat fc? 2R0 + Cl2As the charge passes through the furnace, the temper-ature continues to increase, and part of the salt rapidlyvolatilizes as sodium chloride, while the remainder entersinto the ehloridizing reactions. The nsult is that themetallic chloride, which does doI evaporate rapidly in thezones of lower temperature, is conveyed into the hotterregions, where the ehloridizing atmosphere becomes would not require a strong imagination to conceive adecomposition or reversal of reaction, in which the metalwould be left with the calcine as a non-volatile compoundor element. Experiments have shown that the silver re- maining in the calcine from a high-temperature (II ent as chloride. It may be thai some of tie Bilver compounds 0CCU1 in th- compbx oxidized o qo( chloridized at the low temperature, [f tl iuld logicallj be assumed that the chloridmighl volatilized or decomposed and dissipated b< tie m!\. r Would he in an available stale to I .• i SI AIT\KATUS From this reasoning, it appears that the most logicalmethod of volatilizing metals from an ore would be toplace tie isting of ore and part of the ehlo- ridizing reagents, in the furnace, to permit the charge tobecome heated to the proper temperature and then tomaining portion of the haloid salt to thein the zone of high temperature. Thismethod of supplying the ehloridizing reatrcnt would pro-a highly chl ? atmosphere directly where it is net.; The following is the record of the first test mawherein the ehloridizing reagents were supplied to the 162 MINING AND SCIENTIFIC PRESS July 30, 1921 charge in the front and heated end. Tins test was madethe purpose of chloridizing and volatilizing the Leadand silver in an oxidized zinc ore, leaving high-grade zinccalcine. The charge was fed into the f 1 end of the fur-nace by means of a screw-conveyor. In addition. I, ofhydrated calcium chloride was fed by hand a1 regularintervals to the charge
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