GB874432A - Treatment of clay - Google Patents

Treatment of clay

Info

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
Application number
GB21157A
Inventor
Gordon Kenneth Jones
Barbara Susan Neumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FULLERS EARTH UNION Ltd
Original Assignee
FULLERS EARTH UNION Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FULLERS EARTH UNION Ltd filed Critical FULLERS EARTH UNION Ltd
Priority to GB21157A priority Critical patent/GB874432A/en
Publication of GB874432A publication Critical patent/GB874432A/en
Expired legal-status Critical Current

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.
GB21157A 1957-01-02 1957-01-02 Treatment of clay Expired GB874432A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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