US568427A - Henry e - Google Patents
Henry e Download PDFInfo
- Publication number
- US568427A US568427A US568427DA US568427A US 568427 A US568427 A US 568427A US 568427D A US568427D A US 568427DA US 568427 A US568427 A US 568427A
- Authority
- US
- United States
- Prior art keywords
- bromin
- gold
- solvent
- solution
- ores
- 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
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 46
- 239000010931 gold Substances 0.000 description 46
- 229910052737 gold Inorganic materials 0.000 description 46
- 239000002904 solvent Substances 0.000 description 32
- 239000000243 solution Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 20
- 239000003513 alkali Substances 0.000 description 8
- CPELXLSAUQHCOX-UHFFFAOYSA-M bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 8
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N Carbon tetrachloride Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Chemical class [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001264 neutralization Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
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 invention relates to an improved process in the art of extracting gold from ores or auriferous materials by the use of bromin and the subsequent recovery of the bromin.
- Figure 1 is an elevation, partly in section, of an apparatus for carrying my invention into effect; and Fig. 2is a cross-section on line 2 2, Fig. 1.
- the pulverized auriferous ore is treated in a revolving barrel a with an aqueous solution of bromin.
- the quantity of bromin employed for each ton of ore depends entirely upon the character of the ore, about five to fifteen pounds being generally sufficient, though more may, if necessary, be used.
- This solution is now filtered and conducted into a second barrel, tank, or vessol b, containing suitable blades or stirrers 0.
- Into this barrel I introduce a solvent for the free bromin which is not miscible with the, water and does not precipitate the gold.
- the solvents I propose to use preferably are the hydrocarbons, bisulphid of carbon, carbon tetrachlorid, and neutral oils, which for Serial N0.569,01l. (N0 specimens.)
- the quantity of solvent employed depends upon the quantity of bromin used, an excess of the solvent being desirable.
- the solvent being introduced into the barrelb, as de* scribed, the latter is revolved for from about fifteen to thirty minutes, when the bromin will all have been absorbed by the solvent.
- the rotation of the barrel being stopped, the mixture is allowed to stand, when the solvent containing the bromin will separate from the gold solution by specific gravity.
- the gold solution is now withdrawn from the barrel 1) into a suitable tank d, in which the gold is precipitated in any suitable or well-known manner.
- a suitable alkali such as potash or soda, &c.
- a suitable alkali such as potash or soda, &c.
- the solvent is thus left over in the barrel and can be used' again.
- the bromid salts removed by tap e are treated in any of the well-known manners, as by the addition of an acid, to set the bromin free.
- What I claim is- 1.
- the process of extracting gold from ores which consists in treating the ores with an aqueous bromin solution in excess, then adding a solvent for the free bromin, withdrawin g the dissolved gold, and separating the bromin from the solvent, substantially as specified.
Description
(No Model.)
'H. R. GASSEL. PROCESS OF EXTRA-OTING GOLD.
No. 568,427. Patented Sept. 29, 1896.
W m m THE nonms PETERS cu. Pno'rau'mo UN TED STATES ATENT men HENRY R. CASSEL, on NEW YORK, N'QY.
PROCESS OF EXTRACTING GOLD.
SPECIFICATION forming part of Letters Patent No. 568,427, dated September 29, 1896.
Application filed November 15,1895.
To all whom it may concern.-
Be it known that I, HENRY R. CASSEL, of New York city, New York, have invented an Improved Process of Extracting Gold, of which the following is a specification.
This invention relates to an improved process in the art of extracting gold from ores or auriferous materials by the use of bromin and the subsequent recovery of the bromin.
It is well known that an aqueous solution of bromin dissolves gold very rapidly, but in the extraction of gold from ores it is necessary to use a greater quantity of bromin than the gold would require for its solution, first, because of the presence of other metals which also combine with the bromin, and, secondly, because the use of a greater quantity of bromin than is necessary to combine with both the precious and base metals insures a rapid and complete extraction of the gold. Inasmuch, however, as bromin is expensive, its use can only be rendered commercially available when means for the recovery of the excess used are provided.
I propose to recover the bromin in a simple, practical, and inexpensive manner, after it has acted upon the gold, by mixing it with a solvent which does not precipitate the gold and then separating it from such solvent.
In the accompanying drawings, Figure 1 is an elevation, partly in section, of an apparatus for carrying my invention into effect; and Fig. 2is a cross-section on line 2 2, Fig. 1.
The pulverized auriferous ore is treated in a revolving barrel a with an aqueous solution of bromin. The quantity of bromin employed for each ton of ore depends entirely upon the character of the ore, about five to fifteen pounds being generally sufficient, though more may, if necessary, be used. By rotating the barrel for about two hours the bromin will combine with the gold, and the latter will be converted into a bromid in solution. This solution is now filtered and conducted into a second barrel, tank, or vessol b, containing suitable blades or stirrers 0. Into this barrel I introduce a solvent for the free bromin which is not miscible with the, water and does not precipitate the gold. The solvents I propose to use preferably are the hydrocarbons, bisulphid of carbon, carbon tetrachlorid, and neutral oils, which for Serial N0.569,01l. (N0 specimens.)
the purpose of this invention are equivalents. The quantity of solvent employed depends upon the quantity of bromin used, an excess of the solvent being desirable. The solvent being introduced into the barrelb, as de* scribed, the latter is revolved for from about fifteen to thirty minutes, when the bromin will all have been absorbed by the solvent. The rotation of the barrel being stopped, the mixture is allowed to stand, when the solvent containing the bromin will separate from the gold solution by specific gravity. The gold solution is now withdrawn from the barrel 1) into a suitable tank d, in which the gold is precipitated in any suitable or well-known manner.
In order to separate the bromin from the solvent, I prefer to add thereto a suitable alkali, such as potash or soda, &c., which will combine with the bromin and form bromid and bromate salts in solution, which are withdrawn by tap e. The solvent is thus left over in the barrel and can be used' again. The bromid salts removed by tap e are treated in any of the well-known manners, as by the addition of an acid, to set the bromin free.
If soda is used as the alkali which is to combine wit-h the bromin, I use about one part per weight of sodium hydrate for each part of bromin by weight to be recovered.
It will be seen that by this process the bromin as well as the solvent is recovered, so that the process is economical and commercially practicable.
What I claim is- 1. The process of extracting gold from ores, which consists in treating the ores with an aqueous bromin solution in excess, then adding a solvent for the free bromin, withdrawin g the dissolved gold, and separating the bromin from the solvent, substantially as specified.
2. The process of extracting gold from ores, which consists in treating the ores with an aqueous bromin solution in excess, then adding a hydrocarbon,withdrawing the dissolved gold, and separating the free bromin from the hydrocarbon, substantially as specified.
3. The process of extracting gold from ores, which consists in treating the ores with an aqueous bromid solution in excess, then addin g a solvent for the free bromin, withdrawing the dissolved gold, and adding an alkali gold and adding an alkali to the bromin so to the bromin solution, to separate the brolution, to separate the free bromin from the IO min from the solvent, substantially as speoihydrocarbon, substantially as specified.
4:. The process of extracting gold from ores, HENRY R. GASSEL. which consists in treating the ores with an "Witnesses: aqueous bromin solution in excess, then add- F. V. BRIESEN,
in g a hydrocarbon Withdrawing the dissolved FREDERICK SEIBEL.
Publications (1)
Publication Number | Publication Date |
---|---|
US568427A true US568427A (en) | 1896-09-29 |
Family
ID=2637133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US568427D Expired - Lifetime US568427A (en) | Henry e |
Country Status (1)
Country | Link |
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US (1) | US568427A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5304359A (en) * | 1992-03-03 | 1994-04-19 | Bhp Minerals International Inc. | Dissolution of platinum group metals from materials containing said metals |
-
0
- US US568427D patent/US568427A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5304359A (en) * | 1992-03-03 | 1994-04-19 | Bhp Minerals International Inc. | Dissolution of platinum group metals from materials containing said metals |
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