GB466429A - Process for purification of earthy minerals and improving their colour - Google Patents

Process for purification of earthy minerals and improving their colour

Info

Publication number
GB466429A
GB466429A GB3385435A GB3385435A GB466429A GB 466429 A GB466429 A GB 466429A GB 3385435 A GB3385435 A GB 3385435A GB 3385435 A GB3385435 A GB 3385435A GB 466429 A GB466429 A GB 466429A
Authority
GB
United Kingdom
Prior art keywords
hydrosulphite
clay
zinc
thickening
alkali
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
GB3385435A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3385435A priority Critical patent/GB466429A/en
Publication of GB466429A publication Critical patent/GB466429A/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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • 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
    • 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
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)

Abstract

Earthy minerals such as clay are bleached by treatment in aqueous suspension first with a hydrosulphurous acid compound such as zinc hydrosulphite, and then with an alkaline reagent such as caustic alkali, alkali carbonate, trialkali phosphate, or borax in sufficient amount to cause thickening of the clay slip. Thickening when zinc hydrosulphite is used occurs with the precipitation of zinc oxide. When caustic soda is used for the treatment barium zinc, or calcium chloride may also be present. A clay treated with potassium carbonate may be treated with magnesium sulphate to remove excess alkalinity and precipitate magnesium carbonate. Successive alternate treatments with hydrosulphite and excess alkali up to the thickening point of the clay slip may be given. Examples of procedure are furnished. According to the Provisional Specification, the hydrosulphite may be replaced by any other bleaching reagent, and the alkaline reagents may include alkaline-earth metal hydrates or carbonates.
GB3385435A 1935-12-06 1935-12-06 Process for purification of earthy minerals and improving their colour Expired GB466429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3385435A GB466429A (en) 1935-12-06 1935-12-06 Process for purification of earthy minerals and improving their colour

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3385435A GB466429A (en) 1935-12-06 1935-12-06 Process for purification of earthy minerals and improving their colour

Publications (1)

Publication Number Publication Date
GB466429A true GB466429A (en) 1937-05-28

Family

ID=10358309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3385435A Expired GB466429A (en) 1935-12-06 1935-12-06 Process for purification of earthy minerals and improving their colour

Country Status (1)

Country Link
GB (1) GB466429A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955051A (en) * 1956-08-27 1960-10-04 Mabel O Maloney Treatment of clays and clay products produced thereby
US3043707A (en) * 1960-03-25 1962-07-10 Stauffer Chemical Co Method of bleaching clay and improved clay product
CN106167629A (en) * 2016-07-11 2016-11-30 滁州格锐矿业有限责任公司 A kind of novel sericite in powder bleaching process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955051A (en) * 1956-08-27 1960-10-04 Mabel O Maloney Treatment of clays and clay products produced thereby
US3043707A (en) * 1960-03-25 1962-07-10 Stauffer Chemical Co Method of bleaching clay and improved clay product
CN106167629A (en) * 2016-07-11 2016-11-30 滁州格锐矿业有限责任公司 A kind of novel sericite in powder bleaching process

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