Showing papers on "Aluminium powder published in 1975"

Water-dispersible aluminium pastes

Abstract: Aluminium powder is ground in an organic liquid in the presence of a hydrophillic polymer; in particular, a high molecular weight wax, to produce a paste of aluminium powder coated with the hydrophillic polymer, whereby the aluminium powder is readily dispersible in water.

Exothermic lining for metallurgical purposes and method of making the same

Abstract: An exothermic lining material for metallurgical purposes comprises 40-60% of aluminium dross, 1-12% of fibrous filler which may be inorganic or a mixture of inorganic and organic materials, 3-6% of binder, such as a phenoplast and up to 1% of wetting agent. In order to make the lining exothermic it contains 7-25% aluminium powder and/or aluminium swarf, 3-15% iron oxide and/or manganese dioxide and not exceeding 6% cryolite. The lining may be made by a dry process in which flakes or pellets of the composition are pressed to a desired shape or by a wet process in which the aluminium dross is added to an aqueous preparation of the fibrous filler and wetting agent, whereafter the other components are added.

Cleaning compsn for silver articles - consists of a slurry of aluminium powder and is non-toxic and non-polluting

Abstract: Silver or silver-plated articles are cleaned with a neutral or acid aqs. slurry of Al in the presence of electrolytes. The finely divided Al may be dry-mixed with the electrolyte and the aqs. electrolyte only added when the compsn. is reqd.