GB410453A - Improvements in or relating to the production of titanium oxide pigments - Google Patents

Improvements in or relating to the production of titanium oxide pigments

Info

Publication number
GB410453A
GB410453A GB2219332A GB2219332A GB410453A GB 410453 A GB410453 A GB 410453A GB 2219332 A GB2219332 A GB 2219332A GB 2219332 A GB2219332 A GB 2219332A GB 410453 A GB410453 A GB 410453A
Authority
GB
United Kingdom
Prior art keywords
elutriation
suspension
particles
titanium oxide
sediment
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
GB2219332A
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.)
Krebs Pigment & Color Corp
Original Assignee
Krebs Pigment & Color Corp
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
Priority to US423555A priority Critical patent/US1934037A/en
Application filed by Krebs Pigment & Color Corp filed Critical Krebs Pigment & Color Corp
Priority to GB2219332A priority patent/GB410453A/en
Publication of GB410453A publication Critical patent/GB410453A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C09C1/36—Compounds of titanium
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G71/00—Treatment by methods not otherwise provided for of hydrocarbon oils or fatty oils for lubricating purposes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • 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
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Cosmetics (AREA)

Abstract

A dilute aqueous suspension of calcined titanium oxide is deflocculated by addition of an alkaline reagent to give a pH value of at least 7.2 and preferably 8--10, and the resulting suspension then subjected to elutriation to eliminate undesirably large particles. Suitable deflocculators are alkali metal or ammonium hydroxides or carbonates, sodium silicate, and trialkali phosphate. Elutriation is effected at ordinary or elevated temperature by causing the suspension to flow upwardly at a speed of from 2 cm. to 0.3 c.m. per minute, particles of a size from 15 microns upwards to 6 microns upwards respectively then forming a sediment, and the smaller particles being entrained by the liquid. Alternatively elutriation may be performed in stages at decreasing speeds of flow to separate particles of successively decreasing size. Settling of the elutriated suspension may be promoted by acidifying to a value below pH 6.5, say to pH 4. The sediment obtained by elutriation is preferably reground in a pebble mill and again subjected to deflocculation and elutriation, whilst the settled suspension of fine particles is filtered, pressed, washed, dried, and crushed to form a pigment. The process may be applied to composite pigments containing for example sulphate extenders or zinc oxide.
GB2219332A 1930-01-25 1932-08-08 Improvements in or relating to the production of titanium oxide pigments Expired GB410453A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US423555A US1934037A (en) 1930-01-25 1930-01-25 Process for destructive hydrogenation of hydrocarbon oil to form improved lubricants
GB2219332A GB410453A (en) 1932-08-08 1932-08-08 Improvements in or relating to the production of titanium oxide pigments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2219332A GB410453A (en) 1932-08-08 1932-08-08 Improvements in or relating to the production of titanium oxide pigments

Publications (1)

Publication Number Publication Date
GB410453A true GB410453A (en) 1934-05-17

Family

ID=10175458

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2219332A Expired GB410453A (en) 1930-01-25 1932-08-08 Improvements in or relating to the production of titanium oxide pigments

Country Status (1)

Country Link
GB (1) GB410453A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119356A (en) * 1982-05-03 1983-11-16 Western Electric Co Method for fabricating ceramic materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119356A (en) * 1982-05-03 1983-11-16 Western Electric Co Method for fabricating ceramic materials

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