US826925A - Process of sulfatizing ores, &c. - Google Patents
Process of sulfatizing ores, &c. Download PDFInfo
- Publication number
- US826925A US826925A US28754405A US1905287544A US826925A US 826925 A US826925 A US 826925A US 28754405 A US28754405 A US 28754405A US 1905287544 A US1905287544 A US 1905287544A US 826925 A US826925 A US 826925A
- Authority
- US
- United States
- Prior art keywords
- ores
- sulfuric acid
- sulfatizing
- ferrous sulfate
- air
- 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
- 238000000034 method Methods 0.000 title description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 235000003891 ferrous sulphate Nutrition 0.000 description 9
- 239000011790 ferrous sulphate Substances 0.000 description 9
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 9
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 3
- 229910000342 sodium bisulfate Inorganic materials 0.000 description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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
- C22B43/00—Obtaining mercury
Definitions
- a third process which is known suffers from the same disadvantage, and this process consists in treating copper ores with ferrous sulfate with addition of pyrites to replace the sulfuric acid lost in the open roastmg.
- the improved process which forms the object of this present invention allows the really economical extraction of the metals from ores, their by-products, waste products, or residues.
- the improved process is as follows:
- the ores, their by-pr'oducts, and the like are mixed with such quantities of acid alkali sulfates or ferrous sulfate, or mixtures of both, that the alkalies which at the fusion form sulfates receive the required quantity of sulfuric acid from the added compositions of sulfuric acid.
- sodium bisulfate is mixed with the ferrous sulfate.
- the air be excluded during the melting and that the temperature be raised to such a degree that the ferrous sulfate which is formed at the beginning is separated into oxid of the iron and sulfuric acid, so that the latter can combine as soon as it is formed with any alkali present in the charge and adapted to form a sulfate, so that this sulfuric acid is not lost and a considerable saving in bisulfate to be added is obtained.
- the temperature at which the other metallic sulfates decompose is, however, not reached, so that upon lixiviation a solution is obtained which is free from iron and contains as little metallic sulfate as possible.
- Ferrous sulfate is employed particularly for the purpose of enriching the charge to be lixiviated so much with iron that the lixiviated residue forms a marketable product.
- This process differs from the known methods by excluding the air during the melting.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
UNITED STATES PATENT OFFICE.
PROCESS OF SULFATIZING ORES, 800.
Specification of Letters Patent.
Patented July 24, 1906.
Application filed November 15, 1905, Serial No. 287.544.
To all whom it may concern:
Be it known that I, ERNST ENKE, doctor of philosophy, chemist, a subject of the German Emperor, and a resident of Kattowitz, Upper Silesia, Germany, have invented certain new and useful Improvements in Processes for the Sulfatization of Ores and Their By- Products, of which the following is a specification.
It has already been proposed to treat waste of metallic zinc and zinc ores with sodium bisulfate by roasting. One has, however, not discovered how this process can yield a marketable product and how it can be made profitable. It has been overlooked that it is necessary to roast with bisulfate at such a degree of temperature that the ferrous sulfate which is formed is decomposed again. Thus much sulfuric acid has been lost, as all zinc ores, and particularly their by-products, are more or less rich in iron, and consequently such method has hitherto been practically valueless, for which reason it has not been employed.
It has further been proposed to add to other metals mixtures of sulfatic ores of'zinc and lead. With this method the ores have ture at which begins the decomposition of the ferrous sulfate which is formed; but the roasting is done in the open air or by using the oxygen contained in the air for obtaining the decomposition into ferric oxid and sulfurous acid, which is then submitted to further treatment with a view of obtaining sulfuric acid. This process suffers from the same disadvantage as the first-mentioned method, because all the sulfuric acid in combination with the iron is lost and it cannot be recuperated or its recuperation would be unpractical, for the reason that it is too much diluted with air and that it exists in relatively small quantities. Therefore this process is also not fit for practical exploitation.
A third process which is known suffers from the same disadvantage, and this process consists in treating copper ores with ferrous sulfate with addition of pyrites to replace the sulfuric acid lost in the open roastmg.
7 All known methods suffer, apart from other inconveniences, from the disadvantage that large quantities of sulfuric acid are lost in consequence of the open roasting.
The improved process which forms the object of this present invention allows the really economical extraction of the metals from ores, their by-products, waste products, or residues.
The improved process is as follows: The ores, their by-pr'oducts, and the like are mixed with such quantities of acid alkali sulfates or ferrous sulfate, or mixtures of both, that the alkalies which at the fusion form sulfates receive the required quantity of sulfuric acid from the added compositions of sulfuric acid. In preference sodium bisulfate is mixed with the ferrous sulfate. It is essential that the air be excluded during the melting and that the temperature be raised to such a degree that the ferrous sulfate which is formed at the beginning is separated into oxid of the iron and sulfuric acid, so that the latter can combine as soon as it is formed with any alkali present in the charge and adapted to form a sulfate, so that this sulfuric acid is not lost and a considerable saving in bisulfate to be added is obtained. The temperature at which the other metallic sulfates decompose is, however, not reached, so that upon lixiviation a solution is obtained which is free from iron and contains as little metallic sulfate as possible. Ferrous sulfate is employed particularly for the purpose of enriching the charge to be lixiviated so much with iron that the lixiviated residue forms a marketable product.
This process differs from the known methods by excluding the air during the melting.
What I claim as my invention, and desire to secure by Letters Patent, is
The process of sulfatizing ores or their byproducts which consists in adding sodium bisulfate and ferrous sulfate to the ore, and heating the mixture with the exclusion of air to a temperature sufficient to decompose only the ferrous sulfate.
In witness whereof I have hereunto set my hand in the presence of two witnesses.
ERNST ENKE.
Witnesses:
E. A. MAN, A. .W. MAN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28754405A US826925A (en) | 1905-11-15 | 1905-11-15 | Process of sulfatizing ores, &c. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28754405A US826925A (en) | 1905-11-15 | 1905-11-15 | Process of sulfatizing ores, &c. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US826925A true US826925A (en) | 1906-07-24 |
Family
ID=2895405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US28754405A Expired - Lifetime US826925A (en) | 1905-11-15 | 1905-11-15 | Process of sulfatizing ores, &c. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US826925A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133865A (en) * | 1973-07-05 | 1979-01-09 | J. R. Calbeck, Trustee | Process for preparing metallic sulphates |
| US20050095246A1 (en) * | 2003-10-24 | 2005-05-05 | Medtronic, Inc. | Techniques to treat neurological disorders by attenuating the production of pro-inflammatory mediators |
-
1905
- 1905-11-15 US US28754405A patent/US826925A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133865A (en) * | 1973-07-05 | 1979-01-09 | J. R. Calbeck, Trustee | Process for preparing metallic sulphates |
| US20050095246A1 (en) * | 2003-10-24 | 2005-05-05 | Medtronic, Inc. | Techniques to treat neurological disorders by attenuating the production of pro-inflammatory mediators |
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