Diaphragms for use in the electrolysis of alkali metal...

Details Diaphragms for use in the electrolysis of alkali metal... Diaphragms for use in the electrolysis of alkali metal...

C - Chemistry, Metallurgy

25

B

204/157, 204/201

C25B 13/08 (2006.01) C25B 1/46 (2006.01) C25B 13/04 (2006.01)

Patent

CA 1117474

ABSTRACT OF THE DISCLOSURE A diaphragm for use in the electrolysis of alkali metal chloride solutions in electrolytic diaphragm cells comprises a cohesive body formed of a mixture of sand and a thermoplastic polymeric binding agent. The diaphragm may include a support material which is electrically conductive, such as a nickel mesh, or electrically non-conductive and non-swelling, such as fibers, meshes and fabrics. The diaphragm may include a lubricant, a wetting agent or an additive such as alumina, in- organic phosphates, lithium salts, lime, magnesia or inorganic magnesium salts. The diaphragm of the present invention has increased chemical and dimensional stability, a long operational life and is non-polluting.

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