US1548351A - Treatment of lead minerals - Google Patents
Treatment of lead minerals Download PDFInfo
- Publication number
- US1548351A US1548351A US708330A US70833024A US1548351A US 1548351 A US1548351 A US 1548351A US 708330 A US708330 A US 708330A US 70833024 A US70833024 A US 70833024A US 1548351 A US1548351 A US 1548351A
- Authority
- US
- United States
- Prior art keywords
- lead
- minerals
- treatment
- copper
- dissolved
- 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
- 229910052500 inorganic mineral Inorganic materials 0.000 title description 24
- 239000011707 mineral Substances 0.000 title description 24
- 238000011282 treatment Methods 0.000 title description 7
- 235000010755 mineral Nutrition 0.000 description 23
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N N-phenyl amine Natural products NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- MFEVGQHCNVXMER-UHFFFAOYSA-L 1,3,2$l^{2}-dioxaplumbetan-4-one Chemical compound [Pb+2].[O-]C([O-])=O MFEVGQHCNVXMER-UHFFFAOYSA-L 0.000 description 5
- 229910000003 Lead carbonate Inorganic materials 0.000 description 5
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000012670 alkaline solution Substances 0.000 description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 4
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 4
- 238000005188 flotation Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000005749 Copper compound Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 229940108928 copper Drugs 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 150000001880 copper compounds Chemical class 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 150000003568 thioethers Chemical class 0.000 description 3
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 229940116318 copper carbonate Drugs 0.000 description 2
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 description 2
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 235000019198 oils Nutrition 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- FWLHAQYOFMQTHQ-UHFFFAOYSA-N 2-N-[8-[[8-(4-aminoanilino)-10-phenylphenazin-10-ium-2-yl]amino]-10-phenylphenazin-10-ium-2-yl]-8-N,10-diphenylphenazin-10-ium-2,8-diamine hydroxy-oxido-dioxochromium Chemical compound O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.Nc1ccc(Nc2ccc3nc4ccc(Nc5ccc6nc7ccc(Nc8ccc9nc%10ccc(Nc%11ccccc%11)cc%10[n+](-c%10ccccc%10)c9c8)cc7[n+](-c7ccccc7)c6c5)cc4[n+](-c4ccccc4)c3c2)cc1 FWLHAQYOFMQTHQ-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910001779 copper mineral Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052592 oxide mineral Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
Definitions
- My invention aims to provide a process I by which lead minerals can be made susceptible to concentration by the flotation method.v Not all valuable minerals are amenable to flotation concentration. Generally only such as are called sulphides respond to such treatment. The other minerals, or such as may be called oxides because oxygen rather than sulphur is an important part of their composition, must first be given a preliminary treatment to make them recoverable in a flotation concentrate.
- the lead minerals After the above coating has been formed the lead minerals have a surface which is capable of oxidizing and so precipitating many organic substances which may now be introduced into the solution.
- a particularly important reagent far this purpose is aniline oil or an acid salt of aniline. This may so be dissolved in the water of the pulp and a final coating of the organic oxidation product known as aniline black formed on the surface of the lead minerals.
- Other substances may serve the same purpose, for example, linseed oil, turpentine, pine oil, etc.
- the function of the cop-per salt mentioned together with the alkali bichromate is to catalyze the final oxidation reaction between the chromate and the organic substance, for example, aniline, dissolved.
- the organic substance for example, aniline
- the use of the copper salt in the operation may be delayed until the aniline is also dissolved. In this case a coating of lead chromate only would be formed. This would then be modified by a solution of say aniline and copper sulphate dissolved together to form the final organic resin coating on the lead minerals.
- precipitates may be first formed on the surface of the oxide minerals of lead, such precipitates being in turn capable of oxidizing and so precipitating certain or anic substances which may be now broug t in contact with the modified lead minerals by being dissolved in the liquid of the pulp.
Description
Patented Aug. 4, 1925.
V UNITED STATE FF! ca.
LOUIS r. CLARK, or JERSEY our, NEW Jnnsnv.
TREATMENT or LEAD MINERALS.
No Drawing.
Treatment of Lead Minerals, of which the following is a specification.
My invention aims to provide a process I by which lead minerals can be made susceptible to concentration by the flotation method.v Not all valuable minerals are amenable to flotation concentration. Generally only such as are called sulphides respond to such treatment. The other minerals, or such as may be called oxides because oxygen rather than sulphur is an important part of their composition, must first be given a preliminary treatment to make them recoverable in a flotation concentrate.
Minerals of lead are especially apt to fall under the above classification of sulphides and oxides. The sulphides will float and the oxides not. T have found, however, that when the oxides are given a preliminary coating of anorganic substance, they too become flotable. l The following description will show how such a substance of organic nature may be applied to the particles of lead mineral. The operationsare performed in a pulp, that is, a mixture of finely ground ore and water. In such acondition the lead minerals may be considered as individual small particles whose surfaces may be modified by other substances dissolved in the water of the pulp. These reactions may be effected in various Ways, as follows:
(a) Treatment of a pulp containing an oxide of lead, for example, lead carbonate, with an alkali bichromate, for example,
'Na Cr O in a neutral or slightly acid solution to form a coating of lead chromate. This may advantageously be done in a solution'having copper sulphate dissolved together with the alkali bichromate, or by a solution of copper bichromate itself. The equation for this last will indicate the net result of any such combination,
'on the surface of the lead minerals are relsubstances except in atively insoluble This operation stronger acid solutions.
Application filed April 23, 1924. Serial No. 708,330.
should be conducted with small and insufficlent amounts of the dissolved salts present -to react with the total weight of lead carbonate in the portion of ore treated so as to merely coat the lead; minerals and almclist completely consume the dissolved sa ts.
After the above coating has been formed the lead minerals have a surface which is capable of oxidizing and so precipitating many organic substances which may now be introduced into the solution. A particularly important reagent far this purpose is aniline oil or an acid salt of aniline. This may so be dissolved in the water of the pulp and a final coating of the organic oxidation product known as aniline black formed on the surface of the lead minerals. Other substances may serve the same purpose, for example, linseed oil, turpentine, pine oil, etc.
The function of the cop-per salt mentioned together with the alkali bichromate is to catalyze the final oxidation reaction between the chromate and the organic substance, for example, aniline, dissolved. There 'may, however, be sufficient copper mineral naturally associated with the lead carbonate so that its use in the operation may be omitted. On the other hand, the use of the copper salt in the operation may be delayed until the aniline is also dissolved. In this case a coating of lead chromate only would be formed. This would then be modified by a solution of say aniline and copper sulphate dissolved together to form the final organic resin coating on the lead minerals.
The above describes reactions which take place best in neutral or sli htly acid solutions. The following proce ure in alkaline solution may be more desirable with some ores, for example where lead carbonate ocours with limestone.
(b) Treatment-of a pulp with bleaching lime, calcium hypochlorite, dissolved in the water of the pulp together with aniline oil. In this case in alkaline solution the lead minerals act catalytically at their surface to complete the oxidation of the aniline froni the blue solution formed when it isdissolved with calcium hypochlorite, probably by incipient precipitation of lead dioxide. The net result is however the formation of the insoluble organic resin coating on the surface of the lead minerals. Other oxidizing agents in alkaline solution may be simimay be adopted for some ores. This may consists in applying a preliminary coating of a copper compound on the surface of the lead minerals in neutral or alkaline solution as previously mentioned. Equations illustrating these conditions follow rboo, CuSO, PbSO 01100..
This is a reciprocal precipitation from a solution of copper sulphate by the solid grains of lead carbonate to form the two a new and relatively insolublesubstances, lead sulphate and copper carbonate.
' attained by other salts of copper dissolved.
After this preliminary coating with a copper compound has been accomplished, then the procedure given in my. application No. 671,392 may be applied and in substantially the manner as therein set forth for the treat-- ment of naturally occurring oxidized copper lead minerals WlllCh consists in coating the minerals. This procedure consists in; applying to a pulp of the treated ore acetylene and other oxldizable organic substances, which facilitate the reduction of the cupric minerals, so as to apply to the particles thereof a coating which facilitates their subsequent flotation.
The above describes methods .whereby precipitates may be first formed on the surface of the oxide minerals of lead, such precipitates being in turn capable of oxidizing and so precipitating certain or anic substances which may be now broug t in contact with the modified lead minerals by being dissolved in the liquid of the pulp.
Though I have described with, great particularity of detail certain embodnnents of my invention, yet'it is not to be understood therefrom that the invention is restricted to the particular embodiments disclosed. Various modifications may be made in the particular steps) and in the order thereof and in the substitution of equivalent materials by those skilled in-the art without departing from the invention as defined in p the following claims. What I claim is:
'11. The method of treating ores containing lead minerals which co'nsistsin forming on the particles of such minerals a superficial film of lead chromate and treating the same with an organic substance to oxidize the latter and precipitate the oxidation prodnets on the particles.
2. The process of claim 1 in which the superficial film. contains copper carbonate as .well as lead chromate.
3. The method of treating ores containing lead minerals which-consists in subjecting the particles to the action of lead chromate and copper sulphate in a solution of an organic.substance'adapted to be oxidized so that the oxidation products are precipitated on the particles.
4. The method of treating ores containing particles preliminarily with a copper compound and then applying a coating containing cuprous acety ide.
Inwitness whereof, I have' hereunto signed my name.
LOUIS F." CLARK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US708330A US1548351A (en) | 1924-04-23 | 1924-04-23 | Treatment of lead minerals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US708330A US1548351A (en) | 1924-04-23 | 1924-04-23 | Treatment of lead minerals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1548351A true US1548351A (en) | 1925-08-04 |
Family
ID=24845369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US708330A Expired - Lifetime US1548351A (en) | 1924-04-23 | 1924-04-23 | Treatment of lead minerals |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1548351A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951786A (en) * | 1974-04-30 | 1976-04-20 | Vojislav Petrovich | Oxidizing method in froth flotation of minerals |
-
1924
- 1924-04-23 US US708330A patent/US1548351A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951786A (en) * | 1974-04-30 | 1976-04-20 | Vojislav Petrovich | Oxidizing method in froth flotation of minerals |
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