GB367525A - Improvements in process for the production of aluminium oxide from aluminium nitrate, in which the decomposition of nitric acid is reduced to a minimum - Google Patents

Improvements in process for the production of aluminium oxide from aluminium nitrate, in which the decomposition of nitric acid is reduced to a minimum

Info

Publication number
GB367525A
GB367525A GB1888/31A GB188831A GB367525A GB 367525 A GB367525 A GB 367525A GB 1888/31 A GB1888/31 A GB 1888/31A GB 188831 A GB188831 A GB 188831A GB 367525 A GB367525 A GB 367525A
Authority
GB
United Kingdom
Prior art keywords
minimum
production
reduced
nitric acid
aluminium
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
GB1888/31A
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 GB1888/31A priority Critical patent/GB367525A/en
Publication of GB367525A publication Critical patent/GB367525A/en
Expired legal-status Critical Current

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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
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
    • C01F7/308—Thermal decomposition of nitrates

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

A process for producing aluminium oxide by heating hydrated aluminium nitrate is characterized in that the heating is effected in stages. In the first stage, the nitrate is fused in its water of crystallization at a temperature not exceeding 150 DEG C., until 40 per cent of the water and nitric acid is evolved; the material approaching solidification is then heated to a temperature not exceeding 250 DEG C. until 75 per cent of the water and acid is evolved, and in the third stage above 250 DEG C. but not exceeding 450-500 DEG C., when complete decomposition is effected. By operating in this manner, the production of lower oxides of nitrogen is reduced to a minimum.
GB1888/31A 1931-01-20 1931-01-20 Improvements in process for the production of aluminium oxide from aluminium nitrate, in which the decomposition of nitric acid is reduced to a minimum Expired GB367525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1888/31A GB367525A (en) 1931-01-20 1931-01-20 Improvements in process for the production of aluminium oxide from aluminium nitrate, in which the decomposition of nitric acid is reduced to a minimum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1888/31A GB367525A (en) 1931-01-20 1931-01-20 Improvements in process for the production of aluminium oxide from aluminium nitrate, in which the decomposition of nitric acid is reduced to a minimum

Publications (1)

Publication Number Publication Date
GB367525A true GB367525A (en) 1932-02-25

Family

ID=9729813

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1888/31A Expired GB367525A (en) 1931-01-20 1931-01-20 Improvements in process for the production of aluminium oxide from aluminium nitrate, in which the decomposition of nitric acid is reduced to a minimum

Country Status (1)

Country Link
GB (1) GB367525A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366446A (en) * 1965-07-16 1968-01-30 Allied Chem Process for decomposition of aluminum nitrate nonahydrate
US4044115A (en) * 1976-07-02 1977-08-23 The United States Of America As Represented By The Secretary Of The Interior Production of alumina monohydrate from aluminum nitrate solutions
US4223000A (en) * 1979-07-27 1980-09-16 Reynolds Metals Company Decomposition of aluminum nitrate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366446A (en) * 1965-07-16 1968-01-30 Allied Chem Process for decomposition of aluminum nitrate nonahydrate
US4044115A (en) * 1976-07-02 1977-08-23 The United States Of America As Represented By The Secretary Of The Interior Production of alumina monohydrate from aluminum nitrate solutions
US4223000A (en) * 1979-07-27 1980-09-16 Reynolds Metals Company Decomposition of aluminum nitrate
WO1981000401A1 (en) * 1979-07-27 1981-02-19 Reynolds Metals Co Decomposition of aluminum nitrate

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