Arizona weekly citizen., 1881-11-06

ger upon it So I,ng as gold and silver ores are found iu places not easily
 reached, and where no fuel exists, anal | gamatiul quicksilver will be used; | but wherever f;el can be obtained or brought .Lc E-uilion process win be ] substituted for
 "in Ner tcrE.tt tle corner of Eff | tcenta cn Eleventh avenue. Mir. Hamilton Hr -ected works for tho ! practical dem s.-,t-cu 1t hls process I ,u a large a. lL5 whole plant and machinery ~ admirably fitted and got | ten up. and does cs mucL credit Co the ' talent of llr. H milton as an engineer as his process i1Cs as metalurgist ! We Uill briefly point out how each op- erati0u is performed, which has been in- ! dicatei uuIe- ,h3 head, Lead oT Metal ! lurCicai Amalca-na lon:
 eFirst- Tine ort is ground fine enough tc pass tlrl1rl s.eves a hundred meshes to the square inch by means Of an ln- geuicus cHLlrci- of Crushers and
 puycriZc-s.
 ~SccoDl The pr ver,zed ore Is auto matlcaiiy ie luto . magnificent rotary furnace c-llllr-eU ir shape diameter
 , feet, l5n-, z, where @ mixture of
 gases, iu-r tr effect a thorough
 roasting, is ri ae-et iy means of Roots
 blower. 4 cu..ar llst chamhercatches
 any of the C-s which might escape roast
 ing, and w.i.. is forced back aUtomat-
 icaliy into Che fur-ace oy means of
 horizontal As IiueIss screw.
 "ILiTl-H t-l .larolst5d ore contains
 "o lead Ii is introduced direct, and auto maticai.v into the lend amalcamatOr. When. ou t... rrnlGrF, it contains oxide of legl t s urs - with the proper amount ut charcoal dust nec'ed for the reduction Ci t.7 lead previous tO mt 5- duction lI.r ila C2llEamator. so that both lead aa iae precious metals may be extracted at one operation by Mir. Hamuton's process. The amalgamatOr consists cl cry perfect piece oi ma chInery working gt rcd heat, in which the pulveri1ei ore i- brought in intimate contact with a bath i lead The ore, deprived Of its pTe-ioys metals, comes out of the lead bath automatically by virtue of its iglt specific gravity. The reactions that take rlrce during the amalgamatl.u hE lead re of very sim pie nature. and ere very effective. In the the roasted ore .r.- .rCU-hly ireei from the sulphur -.e -u-Imony, or telluUm with which 4 may have been confined. and Che linr-HteI metal Is in ft state Co combine instantly with lead and amal-au. vtl ll However. even in the c.,-. pl .I imperfect roasting should any 'l s.lI. exist in the state of sulphuret, ars l.u.t autimouiuret, or telluride, 8 sml.i ea---sp udIng quantity of suiphuret arseu-ur-t autlmuuuret and telluride of lead vrald be formed and all the gold uac.J remain allOyed with lead Here - the -reat superiority of amalgaua'-.l by ieeC over amalga- ] nation by mercury, for with quicksilver | metallic gold alone l- gZluCted. any com 1 binel -olt eeapiug auc' '-1mGtiau and ] remainiug il the ,aiiiugs. With regard I to silver, Che same advantages are Oh- l served. CLiUru-brUuu -Jjide of silver ! found in s0 many ores, sItLas the Lead | vile ores, For inst. 'e, agd winch would ! remain iu chat state .7tsG roasting, are | completely dsc0mro~ej ty lead. Sul- ! phurets, arscl urH--, nuum0niureJs, and | telluuurg' a. -i.FtFs.- aIsuc cuer-etlcally | acted upon should any uf tlHsc com pounds escape -. ..eI.,iu1 Iu thc very perfect syst,-a s. .ra-.iuE adopted by Mir. Hamilton. -u .lar tIeJe IS no fear of ] any of the precious ug,al, escaping | amalgaml,lOB. have satisfied myself | by actual experiments that .he reactions ! enumerated a-a Hraurr and can ha de- pended upon.
 -Tbe base bullion obtained in M-. | rrsa- ia treated as would l be base hIla.l .rHuel by smelling. It | k either er-ei'cl COP desilve-ized by | means CI zine. This last process, which | Is tue oue -at ought [, be adopted . wheroyar Mr. i--ui.Jau's process IS used, ! Is the mos. -.aa.a a-laus. srce the lead ! obtained us- us used over and oyer | agair, wi,aa.- eprrscia1.c loss- It would prove valuable iu camps where ! lead is moi f.-nl