US587079A - Wilhelm majert - Google Patents
Wilhelm majert Download PDFInfo
- Publication number
- US587079A US587079A US587079DA US587079A US 587079 A US587079 A US 587079A US 587079D A US587079D A US 587079DA US 587079 A US587079 A US 587079A
- Authority
- US
- United States
- Prior art keywords
- sodium
- gold
- acid
- solution
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011734 sodium Substances 0.000 description 36
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 34
- 229910052708 sodium Inorganic materials 0.000 description 34
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 32
- 239000010931 gold Substances 0.000 description 32
- 229910052737 gold Inorganic materials 0.000 description 32
- 239000000243 solution Substances 0.000 description 26
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 16
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 14
- CUILPNURFADTPE-UHFFFAOYSA-N Hypobromous acid Chemical compound BrO CUILPNURFADTPE-UHFFFAOYSA-N 0.000 description 14
- 229910052783 alkali metal Inorganic materials 0.000 description 14
- 150000001340 alkali metals Chemical class 0.000 description 14
- 239000002253 acid Substances 0.000 description 12
- 239000007864 aqueous solution Substances 0.000 description 10
- CPELXLSAUQHCOX-UHFFFAOYSA-M bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 10
- JGJLWPGRMCADHB-UHFFFAOYSA-N Hypobromite Chemical compound Br[O-] JGJLWPGRMCADHB-UHFFFAOYSA-N 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- 159000000011 group IA salts Chemical class 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- WGSLWEXCQQBACX-UHFFFAOYSA-N Chlorin Chemical compound C=1C(C=C2)=NC2=CC(C=C2)=NC2=CC(C=C2)=NC2=CC2=NC=1CC2 WGSLWEXCQQBACX-UHFFFAOYSA-N 0.000 description 4
- QWPPOHNGKGFGJK-UHFFFAOYSA-N Hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M NaHCO3 Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 235000011089 carbon dioxide Nutrition 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 230000001376 precipitating Effects 0.000 description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N Boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 101700010854 PROCE Proteins 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 230000001172 regenerating Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
Definitions
- This solution may be obtained in several Ways, of which the following are examplesi First. Dissolve one hundred and sixty parts of bromin in an aqueous solution of at least one'hundred and six parts of carbonate of sodium, (or at least one hundred and sixty-six parts of bicarbonate of sodium.)
- the sodium may be substituted by potassium and the carbonic acid by boric acid.
- the finely-ground or pulverized ore is covered with the extracting fluid and left in contact for a time longer or shorter, according as the gold is in coarse or finely-divided condition.
- the solution is drawn off after the gold is dissolved and the gold is precipitated byiron.
- the fluid is then filtered to remove the precipitated gold and ferric oxid, and the filtrate is regenerated by treating it with a quantity of chlorin or hypochlorous acid proportionate to the amount of bromid of sodium contained therein or by subjecting the filtrate to electrolysis.
Description
7 following to be a full, clear, and exact deacid in a solution of hypobromite and carbon- Fifth. By setting free the hypobromous' acid in a solution of h'ypobromite of sodium PATENT FFICE.
WILHELM MAJERT, OF FALKENBERG, GERMANY.
PROCE S OF EXTRACTING GOLD FROM GOLD ORES.
SPECIFICATION forming part of Letters Application filed September '30, 1895 To all whom it may concern.-
Be it known that I, WILHELM MAJERT, a subject of the Emperor of Germany, residing at Falkenberg, near Grunau, Prussia, Germ an Empire, have invented certain new and useful Improvements in the Extraction of Gold fromits'Ores; and I do hereby declare the scription of the invention, such as will enable others skilled in the art to Which it appertains to make and use the same.
- It has been heretofore proposed to extract gold from gold-containing ores by treating the finely-ground ore with an alkaline solution of' a hypobromite of an alkali metal. This solution, however, does not dissolve gold at all readily. I have found that much better results are obtained by employing an aqueous solution of free hypobromous acid and at least as much carbonate, bicarbonate, borate, or biborate of an alkali metal as is equivalent to the hypobromous acid. In other Words,.I employ such a proportion of the alkaline salt as contains just a sufficient quantity of alkali metal to combine with all the free acid present. This produces a solution of the gold which is more perfect than that obtained even by a solution of cyanid of potassium and has the additional advantages Patent NO. 587,079, dated July 27, 1897. Serial No. 564,209. (No specimens.) I
of being cheaper and of being readily and completely regenerated. This solution may be obtained in several Ways, of which the following are examplesi First. Dissolve one hundred and sixty parts of bromin in an aqueous solution of at least one'hundred and six parts of carbonate of sodium, (or at least one hundred and sixty-six parts of bicarbonate of sodium.)
into an aqueous .solution of one hundred and three parts of bromid of sodium and at least -one hundred and six parts of carbonate of sodium, (or if bicarbonate of sodium is used at leastone hundred and sixty-six parts.)
Third. Prepare an aqueous solution of one hundred and three parts of bromid of sodium and at least one hundred and six parts of carbonate of sodium, (or at least one hundred and sixty-six parts of bicarbonate of sodium) mixed with an aqueous solution of hypochlorous acid which contains seventy parts of active chlorin.
Fourth. Subject an aqueous solution of one hundred and three parts of bromid of sodium and at least one hundred and sixty-six parts of bicarbonate of sodium (which may yet contain more or less chlorid of sodium in soi lution) to the process of electrolysis until the bromid of sodium under the evaporation of carbonic-acid gas is changed entirely or partially into free hypobromous acid and carbonate of sodium.
NaBr-I-NaHCO l-H O subjected to electrolysis Na oo,+B1-on+2n. I
by the introduction of carbonic-acid gas or by the addition of bicarbonate of soda.
(b) NaBrO+NaHOO =Na CO +BrOH.
Sixth. By setting free the hypobromous ate of sodium by the addition of so much of some mineral acid that the amount of alkaline salt used shall contain just sufficientalkaline metal to combine with all the free acid present.
In all cases the sodium may be substituted by potassium and the carbonic acid by boric acid.
In the same manner a larger proportion of chlorid of alkali metals is by no means harmful, and the quantitative proportions of the several component parts may vary to a great extent. It is only essential that free hypobromous acid shall be present along with such an amount of carbonate,bicarbonate, borate, or biborate of an alkali as Will contain suflicient alkaline metal to combine With all of the free acid present.
The finely-ground or pulverized ore is covered with the extracting fluid and left in contact for a time longer or shorter, according as the gold is in coarse or finely-divided condition. The solution is drawn off after the gold is dissolved and the gold is precipitated byiron. The fluid is then filtered to remove the precipitated gold and ferric oxid, and the filtrate is regenerated by treating it with a quantity of chlorin or hypochlorous acid proportionate to the amount of bromid of sodium contained therein or by subjecting the filtrate to electrolysis.
In all cases care must be taken that a quantity of a carbonate, a bicarbonate, a borate, or a biborate of an alkali metal proportionate to the free hypobromous acid be present, since in the absence of one of these salts the oxids of other metals besides gold will be dissolved.
\Vhat I clainnand desire to secure by Letters Patent, is
1. The process of extracting gold from its ores which consists in treating the ore in a finely-divided condition with a solution containing free hypobromous acid, in the presence of such a quantity of an alkaline salt of an alkali metal as contains a suflicient amount of alkaline metal to combine with all of the free acid present, and precipitating the gold from the solution, substantially as described. 2. The process of extracting gold from its ores which consists in treating the ore in a finely-divided condition, with a solution containing free hypobromous acid, in the presence of a carbonate of an alkali metal precipitating the gold from the solution and regenerating the filtrate by adding chloriu, substantially as described.
I In Witness whereof I have hereunto set my hand in presence of two witnesses.
WILHELM MAJ ER'l.
Witnesses:
MAX Som'irzn, WILHELM SCHWIETHAL.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US587079A true US587079A (en) | 1897-07-27 |
Family
ID=2655748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US587079D Expired - Lifetime US587079A (en) | Wilhelm majert |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US587079A (en) |
-
0
- US US587079D patent/US587079A/en not_active Expired - Lifetime
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