US459023A - Curt schreiber and hans knutsen - Google Patents
Curt schreiber and hans knutsen Download PDFInfo
- Publication number
- US459023A US459023A US459023DA US459023A US 459023 A US459023 A US 459023A US 459023D A US459023D A US 459023DA US 459023 A US459023 A US 459023A
- Authority
- US
- United States
- Prior art keywords
- antimony
- ore
- sulphide
- knutsen
- curt
- 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
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 46
- 229910052787 antimony Inorganic materials 0.000 description 46
- 239000000243 solution Substances 0.000 description 32
- UCKMPCXJQFINFW-UHFFFAOYSA-N sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 30
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 22
- 239000011734 sodium Substances 0.000 description 22
- 229910052708 sodium Inorganic materials 0.000 description 22
- 238000000034 method Methods 0.000 description 18
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 16
- 229910052737 gold Inorganic materials 0.000 description 16
- 239000010931 gold Substances 0.000 description 16
- 235000002639 sodium chloride Nutrition 0.000 description 10
- 239000011780 sodium chloride Substances 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 8
- QVQLCTNNEUAWMS-UHFFFAOYSA-N Barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 6
- 229910001864 baryta Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 6
- 229910052709 silver Chemical group 0.000 description 6
- 239000004332 silver Chemical group 0.000 description 6
- 239000003513 alkali Substances 0.000 description 4
- 238000005267 amalgamation Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000012047 saturated solution Substances 0.000 description 4
- 150000003568 thioethers Chemical class 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/22—Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups C25C1/02 - C25C1/20
Definitions
- Our invention relates to gold and silver bearing antimony ores.
- the treatment of this class of ores has hitherto been attended with great difficulties, while the expensive nature of the processes employed has rendered the extraction of the gold or silver unprofitable.
- Ourimproved process of treating auriferous and argentiferous antimony ores is based on the solubility of pure gray antimony ore in different reagents, and more particularly on the discovery that sulphides and oxides of antimony can be easily leached by stirring them in solutions of sulphides of alkalies or alkaline earths, and preferably in a solution of sulphide of sodium.
- the antimony ore is first classified by hand picking into three classes, more or lesssay No.1 ore containing more than twenty-five per cent. of antimony, No. 2 ore containing five to twenty-five per cent, and No.3 ore containing less than five per cent. The ore is then crushed to a suitable fineness, and the whole should readily pass through a sieve of not less than nine hundred meshes to the square inch. From the mill or stampers the ore is taken to the lixiviating pans or agitators.
- sulphide of sodium as the leaching-fluid
- We prefer to have an excess of sulphide of sodium say in the proportion of twelve parts to seventeen parts sulphide of antimonyand when employing sulphide of baryta or sulphide of calcium in solution as a leaching-fluid take an amount of such salt proportionate to its respective molecular weight.
- WVhile preferably making use of sulphide of sodium in the leaching solution
- sulphide of baryta may also be employed, and in the case of sulphate of baryta (heavy spar) being cheaply obtainable it can be employed with great advantage instead of sulphide of sodium.
- ⁇ Ve are also of opinion that sulphide of calcium will answer the same purpose.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Lil
UNITED STATES PATENT OFFICE.
CURT SCHREIBER AND HANS KNUTSEN, OF BROKEN HILL, NEW SOUTH ALES.
PROCESS OF EXTRACTING ANTIMONY FROM ORES.
SPECIFICATION forming part of Letters Patent No. 459,023, dated September 8, 1891.
Application filed November 5, 1889. Serial No. 329,362. (No specimens.)
T0 aZZ whom it may concern.-
Be it known that we, CURT SCHREIBER and HANS KNUTSEN, metallurgical engineers, of Broken Hill, in the Colony of New South IVales, have invented an Improved Process of Extracting Antimony from Ores, of which the following is a full, clear, and exact description.
Our invention relates to gold and silver bearing antimony ores. The treatment of this class of ores has hitherto been attended with great difficulties, while the expensive nature of the processes employed has rendered the extraction of the gold or silver unprofitable.
Various methods of treatment have been tried, but none have hitherto given entirely satisfactory results.
The usual method of roasting the ores before amalgamation is very expensive and permits considerable loss both of gold and antimony. The gold in antimony ore occurs ina metallic state and generally on the surface of the antimony at the points of contact with thequartz. The particles of gold become, in the roasting, coated with oxide of antimony, and as a result are withdrawn from the action of the mercury in the amalgamating proce'ss. In addition to this a portion of the antimony becomes amalgamated, and this, causing the mercury to sicken, renders it unfit for further reaction.
The process of roasting with chloride of sodium gives no better results. In it the vapor from the fuel or from the ore itself forms a basic chloride of antimony which, by coating the particles of gold, causes a similar difficulty in the amalgamating process.
Ourimproved process of treating auriferous and argentiferous antimony ores is based on the solubility of pure gray antimony ore in different reagents, and more particularly on the discovery that sulphides and oxides of antimony can be easily leached by stirring them in solutions of sulphides of alkalies or alkaline earths, and preferably in a solution of sulphide of sodium.
In order that our invention may be the better understood, we will now proceed to describe the same in detail.
In order to secure greater uniformity of treatment, the antimony ore is first classified by hand picking into three classes, more or lesssay No.1 ore containing more than twenty-five per cent. of antimony, No. 2 ore containing five to twenty-five per cent, and No.3 ore containing less than five per cent. The ore is then crushed to a suitable fineness, and the whole should readily pass through a sieve of not less than nine hundred meshes to the square inch. From the mill or stampers the ore is taken to the lixiviating pans or agitators. In these, with preferably sulphide of sodium as the leaching-fluid, we use the formula Sb S +3Na S-:SZ)Na S or, in other words, obtain the reaction of an antimony double salt in solution by the combination of three hundred and thirty-six parts sulphide of antimony with two hundred and thirty-four parts sulphide of sodium. We prefer to have an excess of sulphide of sodium say in the proportion of twelve parts to seventeen parts sulphide of antimonyand when employing sulphide of baryta or sulphide of calcium in solution as a leaching-fluid take an amount of such salt proportionate to its respective molecular weight.
In practice we find that one cubic yard of solution, or, say, two hundred (200) gallons per ton, of ore is sufficient, but vary the strength according to the percentage of antimony the latter contains. By thus treating the three classes of ore specified above we obtain three resulting lyes, which, being of different concentrations, require to be treated in different ways.
In treating the ore so that we may obtain completely-saturated solutions, and as a consequence tailings entirely free from antimony, We employ a process of circulation of the leaching solution. In this way the ore is treated with three or more solutions-a e fresh ore is first leached with solution used twice previously, then with solution used once, and finally with fresh solution. The saturated solutions of antimony double salts thus obtained are then removed for recovery of the antimony in metallic form. For this purpose we make use of electrolysis.
The precipitation of antimony by electricity being one of the methods of estimating it quantitatively, we expect to obtain an equal success by applying it on a large scale. Care must, however, be taken to regulate the strength of the currents according to the concentration of. the lyes. The reaction in the baths are on the cathode on the following formula: Sb S +3Na S+OH Sb-l-GNdHS, and on the anode 6NaHS+3O 3H Q+3Na S During the process we add from time to time to the solutions in the baths a quantity of hydroxide of sodium, the effect of which is to change the bisulphide of sodium into sulphide of sodium 011 the formula tNraSfi-GHNGO: 6N a S+Na S O +3H Q In order to increase the conductivity of the solutions, we add to the electricbathsa small quantity of common salt, and then allow the ]yes to circulate continuously from cell to cell until the Whole or nearly the whole of theantimony is precipitated. \Ve have then in the baths a resultant solution of sulphide of sodium, which is returned to the lixiviatingpans for further treatmentof fresh quantities of ore.
In practice we consider that all solutions which contain a certain quantity of. the double salt of antimony will repay treatment by electrolysis. For this purpose wemix strong solution with the weaker ones and increase the"'strength of the weakest solutions by dissolving in them the sulphide of antimony which results from another part of the process.
WVhile preferably making use of sulphide of sodium in the leaching solution, sulphide of baryta may also be employed, and in the case of sulphate of baryta (heavy spar) being cheaply obtainable it can be employed with great advantage instead of sulphide of sodium. \Ve are also of opinion that sulphide of calcium will answer the same purpose.
The ore under treatment being now quite free from antimony, can be easily amalgamated for the recovery of the gold or silver which it may contain. For this purpose we employ any known method of amalgamation; but in practice prefer Molloys electric pans, which are especially suitable for catching finel -divided and float gold.
\Ve wish it to be distinctly understood that we do not confine ourselves to the exact formula given herein orto the exact proportions of the; various alkalies or alkaline earths used in the process; but,
Having now particularly described and ascertained the nature of our said invention and CURT SOHREIBER. HANS KNUTSEN.
\Vitnesses: 7
FRANCIS H. Snow, CHARLES S. BURGESS.
Publications (1)
Publication Number | Publication Date |
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US459023A true US459023A (en) | 1891-09-08 |
Family
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Family Applications (1)
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US459023D Expired - Lifetime US459023A (en) | Curt schreiber and hans knutsen |
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US (1) | US459023A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2909022A1 (en) * | 1979-03-08 | 1980-09-11 | Dedenus Geb Etournaud Berenice | Electrolytic extn. of metal from ore contg. sulphur - with simultaneous prodn. of water-soluble sulphide |
US4225571A (en) * | 1979-03-09 | 1980-09-30 | Berenice Isabelle de Denus | Electrowinning of metal from sulphide ores and recovery of water soluble sulphides |
ES2039140A2 (en) * | 1990-05-30 | 1993-08-16 | Amp Inc | Double locking-type electrical connector |
-
0
- US US459023D patent/US459023A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2909022A1 (en) * | 1979-03-08 | 1980-09-11 | Dedenus Geb Etournaud Berenice | Electrolytic extn. of metal from ore contg. sulphur - with simultaneous prodn. of water-soluble sulphide |
US4225571A (en) * | 1979-03-09 | 1980-09-30 | Berenice Isabelle de Denus | Electrowinning of metal from sulphide ores and recovery of water soluble sulphides |
ES2039140A2 (en) * | 1990-05-30 | 1993-08-16 | Amp Inc | Double locking-type electrical connector |
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