Show IF I 1 AND HOW howell VIE ROAST OL it la 10 play my int full I 1 tug slig gnatta ge tea bit p ciui ih utah would lie be en obit J d to fu r filkill a furnace of nf her own adopted to her own orui ores irie free from royalty or patent 13 lint lit fit further thought an and sandy the he subject ct leads lead me to doubt tile the or of the use uie ol of say furnace for these particular ores but llie ilia old fashioned re but for sake it must bo be upon lopoo oke lie ginott extended acile el like the furnace at tile the urela eurela gold panine at grasi firm valley california A careful examination of the lie lent leni before us will aid us to tile more thorough ith understanding of the cherni cat cal why and wherefore let me say ally that I 1 have no interest in this his mailer other than to aid in the successful handling of these ores anil and any criticism or of furnaces is meant mean t to bo be entire ly anil strictly chemical aad a J if in t lie light or of a preb lem the buik to be dolif denu hj the ibo ing is to the lead le ij and silver of tile fie ore thereby enabling us ui to e ep arale nl lire eure tile the precious gaadt lt 1 eug in the like aiken or hi ley ky furnaces we add ill the its of salt our loturco of chlorine to lo the ores at the elfish ing and after tile ore ecaca ica es the hattory hates it g anea es without it further h handling to I 1 the lie furnace we put into the fur far dace a tul itule a compound coin pound composed of limestone 11 haili is oxide of calcium and carbonie car bouie acid iron halh is in the ore and ami is il a proto liJe zide and which needs tu to acquire another portion i or of oxygen and become eliat thatis it hall not but consume chlorine silica load and nl silver this rii is ia about tile the average e composite ii now when in kleso furnaces we add heat beat to lime ilone in the alinea of salt fit when there lj is tile requisite amount of sulphur to furnish the eul phine gine and to the salt fatt we make as ai I 1 litre howa sulphate Bul phate of soda loja in tile the pres arcs euce of free carbonic ic acid which b by the law 1 of chemical and will 0 0 over to the soda displacing the sulphate lul alpha phate making it a carbor carbon ate au ad uskali the effect of 0 which alkali in the presence or of tile a oie e in the he ong ting tit tat or pan ii n in ia lot hot wiles aty to acue a upon lh iho e cailor chlorine ine of the metals matali alus ulan becoming bolain a chloride of sodium ofa odium or cotillion rait fait while the metals tale lalo the carbonic carbon ii field acid and become carbonates or oxides dzido which if it were possible muil be colle collected cled said and fused with carbon to form metallic oil eil ter should there liere nut not be enus enough ii alkali to convert all or of the chloride of lead tad and tilter silver formed in the wasting into the carbonates carbon atea then the iron pan will in amalgamation seize upon the chlotine chlorine of the ore thui converting conkling the iron of the pan into chloride of iron which in ill a soluble salt bilt and goes goca off ou in ILA the be water thus carrying off air the pan all itself imperceptibly moreover moreover the pan being composed of metallic me tallio iron alica llica carbon etc holds on to i ita to arob so BO forvily that thai not nol enough iron is il parted with during tile the time lime allotted to amalgamate and consequently the ore is not natall all reduced so 0 o that we get only a part of the met al we ih and what we d do e get gel is mixed with lead or any ot other b cir ba bac metal which the ore may contain which depreciates the value of the bullion obtained as it buet be ant jetted to further farther unnecessary eapen siva bite manipulation to fit it lor commercial luei now while we roast tin the limestone of the ore in the presence pree ence odthe of abe salt as we must do in these improved fur pieces we must form an alkali in ro which must be avoided we commence roasting frow ting with a carbonate carbo iule of lime the carbonic carl amic acid of which we must get clear of in order to ti sue sa ful working and we make I 1 instead m lead a carbonate of if soda rodj another alkali elih then we cannot get clear of but is id left to go go into the worling of the ure ore t to c lefeat defeat according to its iti it i amount fall all out our previous worl work let us as we see then if this alkaline Laline aI coa dilion of 0 ill the 0 ore cau in any way be entirely and easily prett removed iove by ing iu in a different furnace a rever ber alory atory in a we are enabled to perform a double roa roasting 8 liag an oil oxidizing oxidising W dising and a chlor roa stice ali which 11 ic II we cannot do in the be uther other furnaces or at any rate that fact remains to be det demonstrated tion stra st fed I 1 that the oxygen v of the flame can be made to per obidise oxidise the ore iu in the like tame home space ol of time and fall in which the ore becomes nearly fut foi when the ore reaches the hearth bearth from its fall bathe in the chimney it IS ia oot not thoroughly but unlike oxidation which ze lequir quires ca free access acccia to lo n e if the chlorination cm call and coot continue lie ke us it lim liet in i 2 red hat nixes nil at tho of tile tho furnace I 1 au a the evve ber atory we roast ilia ore ir we wal i lilic wilburt till until near the loin close or of tile operation we vt theiron the iron of it a r 1 ide l MIMI will not tale take the cli ch in n tile ruba operation BY bv oae drive olt oft tin tile carbonic acid ui of tile Lin finestone estone uy hent and air ir wi we dire the rulphair in 10 the ori ore F it aiuto iiii sulphur ift acid which fit in turu turn bazes upon the metals ra 10 t converting them into of calciu 1 I 1 lit ui leoj lead and annj filver etc tea adil 1 glnn I 1 he rox tirl linn hn lini proceeded fir far enough for or this ali r walk to 4 have leen been like U il if we w add our silt aile sulphuric acid of of out I 1 I 1 aul ul gliates of ilia la 13 is s transferred to the ike soda oda of nl tile ll 11 oxidized sodium of tile li the ahr cillar like goes over to the ine luelar taba akaki j chlo chlorides riden tf rf the ald ardent except lie iron which W we oxidized and pill out of olinc the wu y at al lint US as flout its iia quantity in ia ull all oie ere it would consume of chlorine ind and hato of tod eoda and silica and peroxide of iron as our materials in ill tle the furnace if now BOW we voil moll thenn no have no arkili to undo our work of chlorination of tile hie metals uirt alj our limestone has hi belonge chloride of calcium which goes goei into solution and is b harm arm les le lc s oar of soila soda was not birb bringht ugilt into contact bonset with tile the carbonic acid of the it being thoroughly driven off before the ills sulphate al of flodo was forg ined iron fruci ilia salt kit which lich was waa nut added until the litter latter part of the operation of wading abd hence it remains in solution flu of soda baill a neutral salt bait in ia a BO a far as its effects are concerned in the subsequent operations of amalgamation or our iron is is a peroxide and entirely harmless our lead and silver are chlorides and it remains to adelide abat il hat we willda next if ne nc amalgamate in iron pans we precipitate baell making base bullion depreciating tho the silver which obtain free avila lead if possible should the ore contin zinc copper or lead they are all of allera soluble palls that is ia water will Jittu dibb olve lre theta while chloride of silver ill m as a salt ill in water but soluble in oilier chei solutions I 1 fence then our only proper course is i not amalgamation bill by placing the llie we file in vata gold atar will rhinot a all tile llie lase base metals and a lot hot saturated solution of silt tilt aill vill tale out the chloride of silver or a cold solution of by p osul photo of soda or lime will realure it thus making clean bullion MO fin fine e and ial upward iward from base bactal ores the above is ia about aboul the be chemistry of roasting and or of furnace action and it reul aind fur for us tie as 31 ore workers to govern ourselves uc cordingly in tile working of ores bf one great difficulty with hilb k wo we have to coo cock tend in the llie working orlin of these ores by guy ady possible process of rock working is ii tile ibe liin edone ol of all the llie ores of the be territory if a take tham as a whole for there arty any be it lew few except ioui here I 1 icare tile blab jeLL I 1 have bare endeavored to take such a common sense chemical view of the iho W whole subject as a should show the character of these ores orea also something thin of the chemistry of present modes of working grail eras aj ad elsewhere and alfo aleo to show that flat from the one di frering de clement trient in our ores t was impracticable here I 1 have ai also reviewed furnaces somewhat and their chemical action and pui poses and liast lava thrown out a few lints into on smelt log all of which have sit an important bc bearing ariD upon our immediate pecuniary interests us fu I 1 individuals ln ant and Us as a territory the fur fr active operations is is fut ast passing the winter will soon be upon us yet jet but comparatively little is being done to develop the inam immediate cili tangible wealth of utah we want population tio to inako us a state slate but we furni furnum bli employment for that population else elde those now here must soon leave and others cannot come and without labor capital can do nothing population is now here and waiting for the life aid of c capital il also here to some considerable extent waiting to decide what and why and how to do and it these few blots thus thrown out shall aid in deciding capital to prompt clear profitable action with tho the fewest pos sible aible mistakes then will the object of t the he writer have been accomplished i E EXPERT |