GB497853A - Improvements in or relating to the manufacture of aluminium sulphate - Google Patents

Improvements in or relating to the manufacture of aluminium sulphate

Info

Publication number
GB497853A
GB497853A GB18181/37A GB1818137A GB497853A GB 497853 A GB497853 A GB 497853A GB 18181/37 A GB18181/37 A GB 18181/37A GB 1818137 A GB1818137 A GB 1818137A GB 497853 A GB497853 A GB 497853A
Authority
GB
United Kingdom
Prior art keywords
value
solution
aluminium sulphate
aluminium
iron
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
GB18181/37A
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 GB18181/37A priority Critical patent/GB497853A/en
Publication of GB497853A publication Critical patent/GB497853A/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
    • C01F7/68—Aluminium compounds containing sulfur
    • C01F7/74—Sulfates
    • C01F7/743—Preparation from silicoaluminious materials, e.g. clays or bauxite
    • 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
    • C01F7/68—Aluminium compounds containing sulfur
    • C01F7/74—Sulfates
    • C01F7/746—After-treatment, e.g. dehydration or stabilisation
    • C01F7/748—Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

A raw aluminium sulphate solution obtained from clay, bauxite, alunite, &c. has its pH value raised to a value of 0,1 to 0,8 units above the pH value of a chemically pure solution of the same concentration, impurities such as iron and titanium compounds are separated by hydrolysis under heat and removed together with silica, and the pH value then reduced by at least 1 unit, whereafter a crystallized compound containing aluminium sulphate is obtained and separated from the solution. The mother liquor being free from iron and titanium compounds may be returned to the process and used together with sulphuric acid for attacking more of the mineral. The pH value of the solution may be increased by adding oxides, hydroxides, silicates, aluminates, basic sulphates, or carbonates of aluminium, calcium, magnesium, sodium, or potassium, and decrease of its pH value be effected by saturating the solution with N2O3, N3O4, SO2, SO3, or HCl, whereby unstable addition compounds of aluminium sulphate with the added gases are obtained. The addition compounds may be decomposed by water or by heating to give pure aluminium sulphate. Specification 497,405, as open to inspection under Sect. 91, is referred to.
GB18181/37A 1937-06-30 1937-06-30 Improvements in or relating to the manufacture of aluminium sulphate Expired GB497853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB18181/37A GB497853A (en) 1937-06-30 1937-06-30 Improvements in or relating to the manufacture of aluminium sulphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18181/37A GB497853A (en) 1937-06-30 1937-06-30 Improvements in or relating to the manufacture of aluminium sulphate

Publications (1)

Publication Number Publication Date
GB497853A true GB497853A (en) 1938-12-30

Family

ID=10108053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18181/37A Expired GB497853A (en) 1937-06-30 1937-06-30 Improvements in or relating to the manufacture of aluminium sulphate

Country Status (1)

Country Link
GB (1) GB497853A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563513A1 (en) * 1984-04-27 1985-10-31 Rhone Poulenc Chim Base Stable basic aluminium sulphate, process for its preparation and its application as flocculating agent
EP1264799A1 (en) * 2001-06-07 2002-12-11 Feralco AB Process for the purification of aqueous metal salt solutions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563513A1 (en) * 1984-04-27 1985-10-31 Rhone Poulenc Chim Base Stable basic aluminium sulphate, process for its preparation and its application as flocculating agent
EP1264799A1 (en) * 2001-06-07 2002-12-11 Feralco AB Process for the purification of aqueous metal salt solutions
US6893474B2 (en) 2001-06-07 2005-05-17 Feralco Ab Purification process

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