GB672555A - A process for bleaching china clay - Google Patents

A process for bleaching china clay

Info

Publication number
GB672555A
GB672555A GB498950A GB498950A GB672555A GB 672555 A GB672555 A GB 672555A GB 498950 A GB498950 A GB 498950A GB 498950 A GB498950 A GB 498950A GB 672555 A GB672555 A GB 672555A
Authority
GB
United Kingdom
Prior art keywords
clay
bleaching
china clay
treatment
slurry
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
GB498950A
Inventor
George Brearley
Walter Cule Davies
William Harvey Major
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.)
Brotherton & Co Ltd
Original Assignee
Brotherton & 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 Brotherton & Co Ltd filed Critical Brotherton & Co Ltd
Priority to GB498950A priority Critical patent/GB672555A/en
Publication of GB672555A publication Critical patent/GB672555A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
    • C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
    • C01B33/40—Clays
    • 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)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

A water-soluble pyrophosphate or hexametaphosphate is added to a slurry of china clay before, during or after treatment with sodium hydrosulphite but before the clay is recovered by filtration or settling, the weight of the phosphate being 20-100 per cent of that of the hydrosulphite. Alkali metal, and preferably sodium, pyrophosphates and hexametaphosphates are p preferred. The treatment of a 25 per cent clay slurry is referred to.
GB498950A 1950-02-27 1950-02-27 A process for bleaching china clay Expired GB672555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB498950A GB672555A (en) 1950-02-27 1950-02-27 A process for bleaching china clay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB498950A GB672555A (en) 1950-02-27 1950-02-27 A process for bleaching china clay

Publications (1)

Publication Number Publication Date
GB672555A true GB672555A (en) 1952-05-21

Family

ID=9787626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB498950A Expired GB672555A (en) 1950-02-27 1950-02-27 A process for bleaching china clay

Country Status (1)

Country Link
GB (1) GB672555A (en)

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