US1774883A - Method of producing mercury - Google Patents

Description

.' tions: p g p c I,

1 ,B OH 2+2NasH=Ba sne r-anion? Patented Sep 1 No Drawing.

- -of the foregoingancl ven-t1on', -then,

" l In-the present process crushed tothefineness of-an80 to 150 niesh screenyancl is thenmixeclwith'a hydroxide of an alkaline earth metal, such asabarinm;

after Which'I acld' to the' mixture a solution' dlssolves the:

J of sodium snlfhytlrate Water-soluble sulphide,

represented by p the formula HgS'Na S. or;

The present invention relates to a new and, improved method ofprodncingmercury, and V gais particularly directed I tract-ing mercury from cinn'abar' ore in a wet necessity of subliming.

to a method of'ey way and without the the ore as is the case inthemethod now in general use.

than 90 per cent. of "the total amount of mercuryin the ore.

after fully described ancll particularly nointeclout' intheclaims.

invention; such vcliscloseclinocle, however, constituting but Cinnabar oreis first which mercuric sulphide in theore to a cloilble HgSBaS or QHgSQBaSNaQgS.

Filtration of the mixture containing" double Water soluble sulphide and. washing of the residue with Water is not necessary, but

I .prefer'to filter the mixture, after the re action is completed, Which generally, takes at ordinary temperaturei'.

twenty-four hours,

' The speed of the solving action may beJ has-c the mixture to from to tened by warming degrees take place V From the i solution-j containing the fol'ouble Q NIT D.

; ALTER, GLAEsEn; qrytmog m.NEW-ya Asst e enmisnn -nn'snnncii;

App1ieationfi1ed;November 14, I H r I I p 5 gsu'lp hi'cl n nerciiry isftheir remoye'cl v s: an farna'lgaln by adding someffinely==cliyided f "metaLsuch aszinc,

yphi kflefaccorcling. to the following equations-: 7 My improved process is very 5 +24%: V V rnuch nore economical thantha't inuse anclr' v I 1s capable of efiectlng a recovery of better 3 i gs as Z ;iHgZ ;Z a2sf Tot-he accomplishment This double sulphide To'f mercury and bafrel'atedf'enclsgsaid in M consists ofthe 'niean'shereing I I g acidj forn ing -a salt iwith atheisodi'nm ore ,ba-r. q p Y riiun 'sulphicle' to free"the-snlphiclejiof mer The following olescrip'tion setsi orth in clei-f curiy 'frorrithe other sulphides." tail one approvecl'methocliof carrying" out the 1 4 4 v V g V thls purposefizz an amalgam 'Yhas been'- one of the various waysiniwhich" the principle of the invention may be used.

black sulphide'viof mercury is which 7 is probably C. The reactionslwhich probably may be represented; by the equap be obtained;partlcnlarlylif the original mixture is'heated and l tion" of the" double 'snlphicl' S-N SfeB st 2 o.q= other 1119619879? 1 'myginven'tion may be'employedfinsltead .Offtlie fonee'xplained, change, beingvnia "aliiminnm,an alloyfor .thej like,Wh 'chfreacts'twiththe cl'onble sulemploy'carbonic acidior hydrochloric acicl'ior v to yolatili'ze' the "mercury, after whichfthe' 1 mercury: ai s jcondensed; andthe other metal 'j I maysbe useclgagain' 'in 'the'p'rocess the" V v V formedit-is' fil tered oflfirieclandth'en furnaceclwith socliulng -t if p 1 carbonate or lime, 'w ith' orlwithout tliefacldi 'gtion ofcoke', in ain'uifie: furnace fflThe .fu'rther reactions 'Whichtake place during tlie precipr 1 iitation i ifhe.black snlphide of {mercury and during the iiurnaci-ngfoperation{mayberep 'I sentedasf l owsrx? a 7 -.eithe ri case'thefmerc'ury whichis-yola V 'tilized'during the fnrna'cing operation 150911;, densed and a recoveryinexces'sof fper cent Q.

of theoriginalrnercury contentofjthe ore can agitatediduringtheforma es a or mercl lljy as{de-: I'm

f r gar i themethodhereinldisclosed, providedthe step or steps stated by any of the following claims or the equivalent of such stated step or steps be employed. I therefore particularly point 1. In a method of extracting mercury from cinnabarore, the stepwhich'consists in sub:

jectixig thefiriely diyided ore to the'actioh of nascent-sulphide in the'presence of alkali metaland-alkalirie iaru1; em1 ions.

2.;Ajmethod of extracting mercury from i t 'cinn'abar ore,which comprises reacting upon the firiely divided .orewith a, hydroxide of an alkaline earthmetal and a sulfhydrate of an alkali I metal; thereby forming a double-sul-- phide of mercury and an alkali metal.

3. A method of extracting, mercury from cinna-bar ore,vwhich comprises reacting upon the finely d1vided ore With. a hydroxide of ,an

alkaline earth metal and a sulfhydrate of an I alkali metal, and separatlng the mercury out of thesulphide formed. t

q 4. A methodiof extractmgmercury from clnnabar ore, which comprises convertlngthe mercury in thejo're into a double sulphide,

subjecting to thefaction ofan acid,removing the mercuric sulphide precipitated, and fur- .nacing the same with a'ca rbonate in exclusion ,of air 7 5.- A method of extr'acting" meroury from Qcinnabar, ore', Which comprises subjecting the ore to the actionof nascent sulphide in the presence of t'alkali metal and alkaline earth metal ions. I

BRA method of extracting mercury from Y cinnabar ore, Whichcomprises reacting upon the ore wlth a hydrox de of an alkallne earth V t metal t and asulfhydrate. of a an alkali metal, thereby formingxadouble sulphide of mer- ':ury.andanalkali metal. V Signed byme, this 20th day OfSeptember, I

no a,

out and distinctly claim as my inv'enti'on;