US1573385A - Treatment of earthy minerals - Google Patents
Treatment of earthy minerals Download PDFInfo
- Publication number
- US1573385A US1573385A US33051A US3305125A US1573385A US 1573385 A US1573385 A US 1573385A US 33051 A US33051 A US 33051A US 3305125 A US3305125 A US 3305125A US 1573385 A US1573385 A US 1573385A
- Authority
- US
- United States
- Prior art keywords
- acid
- clay
- colour
- contact
- improving
- 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 28
- 239000011707 mineral Substances 0.000 title description 28
- 239000004927 clay Substances 0.000 description 27
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 24
- 239000002253 acid Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 19
- 150000003839 salts Chemical class 0.000 description 18
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 15
- 229910052725 zinc Inorganic materials 0.000 description 15
- 239000011701 zinc Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 239000000725 suspension Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000007900 aqueous suspension Substances 0.000 description 6
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 5
- 235000010262 sodium metabisulphite Nutrition 0.000 description 5
- 239000004296 sodium metabisulphite Substances 0.000 description 5
- 238000004061 bleaching Methods 0.000 description 4
- -1 zinc Chemical compound 0.000 description 4
- 239000007844 bleaching agent Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 159000000000 sodium salts Chemical class 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical class Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 2
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/10—Eliminating iron or lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/04—Clay; Kaolin
- C04B33/06—Rendering lime harmless
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/30—Drying methods
Definitions
- This invention relates to the treatmentof clays and like earthy minerals for their purification and the improvement of their colour.
- the process for the treatement of minerals, such as clay, for the improvement of their colour is characterized by bringing into contact with the mineral admixed with Water an acid salt of sulphurous acid, such as sodium bisulphite or sodium metabisulphite, in conjunction with a metal which reduces sulphurous acid, such as zinc, and which does not form oxidized coloured salts.
- an acid salt of sulphurous acid such as sodium bisulphite or sodium metabisulphite
- a difiiculty in the bleaching of clay is that the clay'after having been treated with bleaching agents becomes recoloured upon drying, and if a metal, such as iron, which sauds coloured oxidized salts be employed in the reaction the object of the bleaching process may be partly or wholly defeated.
- the process for improving the colour of earthy minerals which comprises bringing into contact with an aqueous suspension of the sub-divided mineral an acid salt of sulphurous acid in the presence of zinc.
- the process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water containing a trace of free mineral acid an acid sodium salt of sulphurous acid in the presence of zinc.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Description
Patented Feb. 16, 1926.
UNETEE STATES WILLIAM FELDENHEIMER, OF LONDON, ENGLAND.
TREATMENT OF EARTHY MINERALS.
No Drawing.
To all whom it may concern:
lie it known that I, IVILLIAM FELDEN- nunrnn, a subject of the King of England, residing at London, England, have invented certain new and useful Improvements in the 'lreatment of Earthy Minerals, of which the following is a. specification.
This invention relates to the treatmentof clays and like earthy minerals for their purification and the improvement of their colour.
In the specification of British Letters Patent, No. 181,132, to Stubbs, there is described a process for. bleaching earthy minerals which consists in efiectin the reduction of sulphurous acid, by the action thereon of a metal such as platinum, iron or zinc, in the presence of the finely-divided mineral to be bleached.
The use of an acid such as sulphurous acid is associated with drawbacks for commercial working. The acid is inconvenient to handle, and is liable to attack the plant, and is also readily oxidized with production of the still more corrosive sulphuric acid( The action of the metal upon the acid tends to be particularly localized by reason of the use or" gas, and in a bulk operation it is'di'flicult-to ensure that the mineral is uniformly treated.
According to the present invention, the process for the treatement of minerals, such as clay, for the improvement of their colour is characterized by bringing into contact with the mineral admixed with Water an acid salt of sulphurous acid, such as sodium bisulphite or sodium metabisulphite, in conjunction with a metal which reduces sulphurous acid, such as zinc, and which does not form oxidized coloured salts.
A difiiculty in the bleaching of clay is that the clay'after having been treated with bleaching agents becomes recoloured upon drying, and if a metal, such as iron, which vields coloured oxidized salts be employed in the reaction the object of the bleaching process may be partly or wholly defeated.
It is of advantage at times, in order to accelerate the reaction, to add a trace of a mineral acid to the reaction mixture, prefcrablv an acid which yields the less readily oxidized salts of iron, for example, hydrochloric acid.
In carrying the invention into effect, care should be Application filed May 26, 1925.
observed to maintain efiicient; gET
Serial No. 33,051.
tation of the mineral,suspensionihronghouL ""I'liave found that zinc and sodium metabisulphite will bleach certain clays which are not bleached by zinc and sulphurous acid. For example, a highly discoloured clay from Dry Branch, Georgia, was made into a per cent suspension in water in a test tube to which was added 1 per cent of sodium mctabisulphite (relatively to the clay) together with a small quantity of zinc filings. The clay commenced to bleach almost immediately. On replacing the sodium metabisulphite by more than ten times the quantity of sulphurous acid solution in the presence of zinc filings, no appreciable bleaching of the clay was observed after four days.
1. The process for improving the colour of earthy minerals which comprises bringing into contact with an aqueous suspension of the sub-divided mineral an acid salt of sulphurous acid in the presence of a metal which reduces sulphurous acid and does not form coloured oxidized salts.
v2. The process for improving the colour of earthy minerals which comprises bringing into contact with an aqueous suspension of the sub-divided mineral an acid salt of sulphurous acid in the presence of zinc.
3. The process for improving the colour of earthy minerals which comprises bringing into contact with an aqueous suspension of the sub-divided mineral an acid alkali metal salt of sulphurous acid together with a metal which reduces sulphurous acid and does not form coloured oxidized salts.
4. The process for improving the colour of earthy minerals which comprises bringing into contact with an aqueous suspension of the sub-divided'mineral an acid alkali metal salt of sulphurous acid in the presence of zinc.
5. The process for improving the colour of earthy minerals which comprises bringing into contact with an aqueous suspension of the sub-divided mineral a. sodium bisulphite in the presence of zinc.
6. The process for improving the colour of earthy minerals which comprises bringing into contact with an aqueous suspension of the sub-divided mineral containing. a
trace of free mineral acid an acid salt of sulphurous acid in presence of a metal which reduces sulphurous acid and does not form coloured oxidized salts.
7. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water an acid salt of sulphurous acid in presence of a metal which reduces sulphurous acid and does not form coloured oxidized salts.
8. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water containing a trace of free mineral acid an acid salt of sulphurous acid in presence of a metal which reduces sulphurous acid and does not form coloured oxidized salts.
9. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water an acid salt of sulphurous acid in the presence of zinc.
10. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water containing a trace of free mineral acid an acid salt of sulphurous acid in the presence of zinc.
11. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension with water an acid sodium salt of sulphurous acid in the presence of a metal which reduces sulphurous acid and does not form coloured oxidized salts.
12. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water an acid sodium salt of sulphurous acid in the presence of zinc.
13. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water containing a trace of free mineral acid an acid sodium salt of sulphurous acid in the presence of zinc.
14. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water sodium metabisulphite in the presence of a metal which reduces sulp-laurous acid and does not form coloured oxidized salts.
15. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water sodium metabisulphite in the presence of zinc. r
16. The process for improving the colour of clay which comprises bringing into contact with the clay in suspension in water containing a trace of free mineral acid so dium metabisulphite in the presence'of zinc. In testunony whereof I affix my signature.
WILLIAM FELDENI-IEIMER
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33051A US1573385A (en) | 1925-05-26 | 1925-05-26 | Treatment of earthy minerals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33051A US1573385A (en) | 1925-05-26 | 1925-05-26 | Treatment of earthy minerals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1573385A true US1573385A (en) | 1926-02-16 |
Family
ID=21868303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US33051A Expired - Lifetime US1573385A (en) | 1925-05-26 | 1925-05-26 | Treatment of earthy minerals |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1573385A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2569680A (en) * | 1949-02-04 | 1951-10-02 | Edgar Brothers Company | Flotation process for whitening clay |
-
1925
- 1925-05-26 US US33051A patent/US1573385A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2569680A (en) * | 1949-02-04 | 1951-10-02 | Edgar Brothers Company | Flotation process for whitening clay |
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