GB1224877A - Improvements in or relating to the treatment of clay - Google Patents

Improvements in or relating to the treatment of clay

Info

Publication number
GB1224877A
GB1224877A GB2519167A GB2519167A GB1224877A GB 1224877 A GB1224877 A GB 1224877A GB 2519167 A GB2519167 A GB 2519167A GB 2519167 A GB2519167 A GB 2519167A GB 1224877 A GB1224877 A GB 1224877A
Authority
GB
United Kingdom
Prior art keywords
clay
slurry
per ton
lbs
froth flotation
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
GB2519167A
Inventor
Norman Owen Clark
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.)
Imerys Minerals Ltd
Original Assignee
English Clays Lovering Pochin Co 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 English Clays Lovering Pochin Co Ltd filed Critical English Clays Lovering Pochin Co Ltd
Priority to GB2519167A priority Critical patent/GB1224877A/en
Priority to DE19681767648 priority patent/DE1767648A1/en
Priority to FR1571537D priority patent/FR1571537A/fr
Publication of GB1224877A publication Critical patent/GB1224877A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Paper (AREA)

Abstract

1,224,877. Brightening clay. ENGLISH CLAYS LOVERING POCHIN & CO. Ltd. 29 May, 1968 [31 May, 1967], No. 25191/67. Heading C1A. [Also in Division B2] A process for brightening clay comprises subjecting the clay feedstock to froth flotation, followed by attrition grinding of the purified clay. Two procedures are given for froth flotation: (1) An aqueous slurry containing 35 to 50% wt. of crude clay is conditioned by agitating the slurry for a time sufficient to dissipate 20 horsepower hours of energy per ton of clay within the slurry. During or before conditioning there is mixed in the slurry, (a) a deflocculant (e.g. sodium silicate 1.0 to 12.0 lbs. per ton of clay), (b) an alkali to raise the pH of the slurry to above pH 7 (e.g. NH 4 OH, 1.0 to 12.0 lbs. per ton of clay), (c) a collector for mineral impurities (e.g. oleic acid 1.5 to 7.5 lbs. per ton of clay), and (d) an activator (e.g. lead acetate on calcium chloride). After dilution of the slurry to 15 to 30% wt. solid content, the slurry is subjected to froth flotation in a vessel having a central internal impeller. The frothing agent used is pine oil or an alkyl ether of polypropylene glycol. (2) An aqueous slurry containing 35 to 50% wt. of crude clay is mixed with a mineral acid to bring the pH of the slurry to below 4, a cationic collector (e.g. aliphatic C 8 -C 20 amine, acetate or hydrochloride at 0.2 to 2.0 lbs. per ton of clay) and a frothing agent of the type used in procedure (1) in approximately the same concentration as the cationic collector. The product clay is attrition ground to dissipate therein at least 100 horsepower hours of energy per ton. Reference has been directed, by the Comptroller to Specification 1,103,585.
GB2519167A 1967-05-31 1967-05-31 Improvements in or relating to the treatment of clay Expired GB1224877A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2519167A GB1224877A (en) 1967-05-31 1967-05-31 Improvements in or relating to the treatment of clay
DE19681767648 DE1767648A1 (en) 1967-05-31 1968-05-31 Process for increasing the whiteness of clays
FR1571537D FR1571537A (en) 1967-05-31 1968-05-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2519167A GB1224877A (en) 1967-05-31 1967-05-31 Improvements in or relating to the treatment of clay

Publications (1)

Publication Number Publication Date
GB1224877A true GB1224877A (en) 1971-03-10

Family

ID=10223707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2519167A Expired GB1224877A (en) 1967-05-31 1967-05-31 Improvements in or relating to the treatment of clay

Country Status (3)

Country Link
DE (1) DE1767648A1 (en)
FR (1) FR1571537A (en)
GB (1) GB1224877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11590514B2 (en) 2018-10-26 2023-02-28 Syncrude Canada Ltd Collectors for treating tailings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11590514B2 (en) 2018-10-26 2023-02-28 Syncrude Canada Ltd Collectors for treating tailings

Also Published As

Publication number Publication date
FR1571537A (en) 1969-06-20
DE1767648A1 (en) 1971-09-23

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