GB388978A - Process for the manufacture of pure titanium dioxide - Google Patents

Process for the manufacture of pure titanium dioxide

Info

Publication number
GB388978A
GB388978A GB16965/32A GB1696532A GB388978A GB 388978 A GB388978 A GB 388978A GB 16965/32 A GB16965/32 A GB 16965/32A GB 1696532 A GB1696532 A GB 1696532A GB 388978 A GB388978 A GB 388978A
Authority
GB
United Kingdom
Prior art keywords
titanium
solution
liquor
sulphate
hydrolysed
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
GB16965/32A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB388978A publication Critical patent/GB388978A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide
    • C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
    • C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
    • C01G23/0534—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts in the presence of seeds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

Titanium dioxide of high colouring power and capable of easy filtration is obtained from solutions of titanium sulphate by treating the solution before precipitation with a liquor possessing a nucleating action prepared either by hydrolysis of a solution of titanium sulphate in which orthotitanic acid has been dissolved but in which a pH value of 2 has not been exceeded, or by neutralizing a solution of titanium sulphate with alkali so that a pH value of 2 is not exceeded, redissolving the precipitated titanium in the mother liquor, and hydrolysing the clear solution. The liquor from which the nuclei are hydrolysed out may contain from 10-30 grms. of sulphuric acid and 30-60 grs. of titanium oxide per litre, and the ratio of titanium to sulphuric acid be from 2 : 1 to 5 : 1. The nuclei are precipitated at a temperature below 95 DEG C., and 1-6 per cent of nucleus liquor may be added to the main solution to be hydrolysed. Specification 310,949 [Class 1 (iii), Oxides &c., Metallic], is referred to.
GB16965/32A 1931-06-15 1932-06-15 Process for the manufacture of pure titanium dioxide Expired GB388978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE388978X 1931-06-15

Publications (1)

Publication Number Publication Date
GB388978A true GB388978A (en) 1933-03-09

Family

ID=6371345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16965/32A Expired GB388978A (en) 1931-06-15 1932-06-15 Process for the manufacture of pure titanium dioxide

Country Status (1)

Country Link
GB (1) GB388978A (en)

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