GB874432A - Treatment of clay - Google Patents
Treatment of clayInfo
- Publication number
- GB874432A GB874432A GB21157A GB21157A GB874432A GB 874432 A GB874432 A GB 874432A GB 21157 A GB21157 A GB 21157A GB 21157 A GB21157 A GB 21157A GB 874432 A GB874432 A GB 874432A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clay
- polyvinyl alcohol
- granules
- solution
- dried
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
Clay granules are stabilized by treating them with an aqueous solution of polyvinyl alcohol or an incompletely etherified ethyl cellulose polymer. The clays concerned are montmorillonite, hectorite, beidellite, nontronite and saponite; the cation exchange capacity of such clays is at least 50 milliequivalents per 100 grams. The moisture content of the clay to be treated is generally from 0-35% and the aqueous solution of polyvinyl alcohol is generally of 2-15% concentration. From 2-6% by weight of the polymer is taken up in the granules. According to Examples (1) calcium montmorillonite was dried to 7.8% moisture content and granulated and then added to a solution of polyvinyl alcohol at 100 DEG C. The granules were washed with water and dried at a temperature not exceeding 80 DEG C. in a current of air. (2) Natural montmorillonite was extruded and treated with polyvinyl alcohol solution at 100 DEG C., and then washed and dried. The clay pellets produced may be employed as bleaching agents and also for the removal of radio-active waste from aqueous liquids. Thus the clay granules may be converted to the ammonium form and employed to remove radio-active strontium cations from a solution.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21157A GB874432A (en) | 1957-01-02 | 1957-01-02 | Treatment of clay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21157A GB874432A (en) | 1957-01-02 | 1957-01-02 | Treatment of clay |
Publications (1)
Publication Number | Publication Date |
---|---|
GB874432A true GB874432A (en) | 1961-08-10 |
Family
ID=9700365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21157A Expired GB874432A (en) | 1957-01-02 | 1957-01-02 | Treatment of clay |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB874432A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998047614A1 (en) * | 1997-04-21 | 1998-10-29 | Engelhard Corporation | Bleaching earth product and method for producing and using the same |
-
1957
- 1957-01-02 GB GB21157A patent/GB874432A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998047614A1 (en) * | 1997-04-21 | 1998-10-29 | Engelhard Corporation | Bleaching earth product and method for producing and using the same |
US6027755A (en) * | 1997-04-21 | 2000-02-22 | Engelhard Corporation | Bleaching earth product and method for producing and using the same |
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