GB190605478A - Improvements in the Conversion of Alkali Sulphate and Bauxite, or other Aluminiferous Material, into Alumina and Alkali Compounds Containing Sulphur. - Google Patents

Improvements in the Conversion of Alkali Sulphate and Bauxite, or other Aluminiferous Material, into Alumina and Alkali Compounds Containing Sulphur.

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Publication number
GB190605478A
GB190605478A GB190605478DA GB190605478A GB 190605478 A GB190605478 A GB 190605478A GB 190605478D A GB190605478D A GB 190605478DA GB 190605478 A GB190605478 A GB 190605478A
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Prior art keywords
alumina
thiosulphate
sulphate
alkali
sodium
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Expired
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Adolf Clemm
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Individual
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Individual
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Publication of GB190605478A publication Critical patent/GB190605478A/en
Expired legal-status Critical Current

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Abstract

5478. Clemm, A. March 6. Alumina ; sodium sulphide and thiosulphate.- Bauxite or other aluminiferous material is calcined with sodium sulphate and carbon, the sulphate and carbon being used in quantities which are multiples of those theoretically necessary to form the aluminate. The calcined mass is lixiviated with water, and the solution obtained is heated either with sulphurous acid gas, when aluminium hydroxide is precipitated and a solution of sodium thiosulphate is formed which can be crystallized, or with hydrogen sulphide, which precipitates the alumina, leaving a solution of sodium sulphide or sulphydrate ; this solution may be used in the manufacture of dyes, or sodium sulphide may be extracted from it, or it may be converted into thiosulphate by passing in sulphurous acid. The residue remaining after lixiviation is, after addition of lime if desired, oxidized by, say, exposure or by blowing in air and then lixiviated, when it yields a further quantity of thiosulphate. Specifications No. 2866, A.D. 1870, and No. 4618, A.D. 1877, are referred to.
GB190605478D 1906-03-06 1906-03-06 Improvements in the Conversion of Alkali Sulphate and Bauxite, or other Aluminiferous Material, into Alumina and Alkali Compounds Containing Sulphur. Expired GB190605478A (en)

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GB190605478T 1906-03-06

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GB190605478A true GB190605478A (en) 1907-03-06

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GB190605478D Expired GB190605478A (en) 1906-03-06 1906-03-06 Improvements in the Conversion of Alkali Sulphate and Bauxite, or other Aluminiferous Material, into Alumina and Alkali Compounds Containing Sulphur.

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GB (1) GB190605478A (en)

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