GB279694A - Improvements in and relating to the bleaching or decolorising of clay or other minerals - Google Patents

Improvements in and relating to the bleaching or decolorising of clay or other minerals

Info

Publication number
GB279694A
GB279694A GB560727A GB560727A GB279694A GB 279694 A GB279694 A GB 279694A GB 560727 A GB560727 A GB 560727A GB 560727 A GB560727 A GB 560727A GB 279694 A GB279694 A GB 279694A
Authority
GB
United Kingdom
Prior art keywords
acid
clay
salts
bleaching
treated
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
GB560727A
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.)
DARTMOOR CHINA CLAY Co LT
Original Assignee
DARTMOOR CHINA CLAY Co LT
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 DARTMOOR CHINA CLAY Co LT filed Critical DARTMOOR CHINA CLAY Co LT
Priority to GB560727A priority Critical patent/GB279694A/en
Publication of GB279694A publication Critical patent/GB279694A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
    • C01F7/26—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with sulfuric acids or sulfates
    • 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)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

279,694. Parker, T. W., and Dartmoor China Clay Co., Ltd. Feb. 28, 1927. Aluminium silicate; silicates in general.-Clay and other minerals containing iron are bleached or decolorised by treatment with acid, with or without a reducing agent, and with aqueous solutions of soluble salts, the bases of which do not form coloured compounds with non-chromophoric acid radicles, which are not reducing agents, and of which the acid radicles do not form insoluble iron compounds. Salts of polyvalent metals, particularly salts of aluminium, calcium, barium, or magnesium, or ammonium salts may be employed, the use of aluminium sulphate, or sodium, potassium, or ammonium alums is particularly advantageous. The salt may be added to the bleaching acid, or to the water used for washing the treated clay or to both; or be mixed with the clay suspension before the latter is treated: or be formed in situ by addition of a metal, its oxide, hydroxide, or carbonate, to the. bleaching acid, or to the washing water with addition to acid. The water used to wash the treated clay may contain alkali to neutralise any acid remaining therein.
GB560727A 1927-02-28 1927-02-28 Improvements in and relating to the bleaching or decolorising of clay or other minerals Expired GB279694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB560727A GB279694A (en) 1927-02-28 1927-02-28 Improvements in and relating to the bleaching or decolorising of clay or other minerals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB560727A GB279694A (en) 1927-02-28 1927-02-28 Improvements in and relating to the bleaching or decolorising of clay or other minerals

Publications (1)

Publication Number Publication Date
GB279694A true GB279694A (en) 1927-11-03

Family

ID=9799255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB560727A Expired GB279694A (en) 1927-02-28 1927-02-28 Improvements in and relating to the bleaching or decolorising of clay or other minerals

Country Status (1)

Country Link
GB (1) GB279694A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184288A (en) * 1962-02-14 1965-05-18 Lisle Auguste Louis De Production of improved asbestos fiber
US3709709A (en) * 1970-10-28 1973-01-09 Georgia Kaolin Co Kaolin derived pigments and methods of producing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184288A (en) * 1962-02-14 1965-05-18 Lisle Auguste Louis De Production of improved asbestos fiber
US3709709A (en) * 1970-10-28 1973-01-09 Georgia Kaolin Co Kaolin derived pigments and methods of producing the same

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