GB882108A - Treatment of mineral substances - Google Patents

Treatment of mineral substances

Info

Publication number
GB882108A
GB882108A GB487258A GB487258A GB882108A GB 882108 A GB882108 A GB 882108A GB 487258 A GB487258 A GB 487258A GB 487258 A GB487258 A GB 487258A GB 882108 A GB882108 A GB 882108A
Authority
GB
United Kingdom
Prior art keywords
acid
clay
sodium
mixture
addition
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
GB487258A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB487258A priority Critical patent/GB882108A/en
Publication of GB882108A publication Critical patent/GB882108A/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
    • C04B33/04—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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28—Compounds of silicon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Aqueous suspensions of mineral substances such as clay or sand decolourized by means of an acid reducing agent are neutralized by the addition of a carbonate or bicarbonate of the alkali or alkaline earth metals with the addition of an alkali metal silicate, while the suspension is acid, e.g. sodium silicate added prior to or during the neutralization procedure or after partial neutralization. 5 to 20 lbs. of sodium silicate per ton of clay may be used. The reducing agent may be zinc hydrosulphite generated in situ by the addition to the aqueous suspension of sodium bisulphite, zinc dust, and sulphuric acid. The use of a mixture of sodium hydrosulphite and sulphuric acid, and of stannous chloride in the presence of an acid is referred to. In an example, sodium bisulphite, zinc powder, and sulphuric acid are added to an aqueous suspension of china clay of 0,35% Fe content, and the mixture is stirred for 1/2 hour. Calcium carbonate is added until a pH of 4 is obtained, and then 1,07 g. of sodium silicate solution, and the mixture, now of pH 6, is stirred for a few minutes. The clay is filtered off and dried.
GB487258A 1958-02-14 1958-02-14 Treatment of mineral substances Expired GB882108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB487258A GB882108A (en) 1958-02-14 1958-02-14 Treatment of mineral substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB487258A GB882108A (en) 1958-02-14 1958-02-14 Treatment of mineral substances

Publications (1)

Publication Number Publication Date
GB882108A true GB882108A (en) 1961-11-15

Family

ID=9785413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB487258A Expired GB882108A (en) 1958-02-14 1958-02-14 Treatment of mineral substances

Country Status (1)

Country Link
GB (1) GB882108A (en)

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