Exothermic lining for metallurgical purposes and method of making the same
AssigneeFirma TIDO Chemisch-technische Produkte GmbH
InventorJulianna Tisza
Life of this patent
Estimating the term…
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.
Claims21
A material for making an exothermic lining, comprising, by weight,
- ______________________________________ 40 to 60% aluminum dross, 1 to 12% fibrous filler, 3 to 6% binder, 0.01 to 1% wetting agent selected from the group consisting of anion- active compounds, non-ionic compounds, and mixtures thereof, 7 to 25% aluminum powder and/or aluminum chips, 3 to 15% iron oxide and/or manganese dioxide, and not exceeding 6% cryolite. ______________________________________
In a method of preparing a material for making an exothermic lining, comprising, by weight,
- ______________________________________ 40 to 60% aluminum dross, 1 to 12% fibrous filler, 3 to 6% binder, 0.01 to 1% wetting agent selected from the group consisting of anion- active compounds, non-ionic compounds, and mixtures thereof, 7 to 25% aluminum powder and/or aluminum chips, 3 to 15% iron oxide and/or manganese dioxide, and not exceeding 6% cryolite;
- ______________________________________
- the method steps of providing an aqueous preparation of the fibrous filler and wetting agent, adding the aluminum dross, the aluminum powder and/or chips, the iron oxide and/or manganese dioxide and the cryolite, adding the binder or components reactive to form the binder, treating the resulting mixture to render it suitable for forming into the desired shape of the lining, forming the lining and drying the formed lining to harden it.
In a method of preparing a material for making an exothermic lining, comprising, by weight the components,
- ______________________________________ 40 to 60% aluminum dross, 1 to 12% fibrous filler, 3 to 6% binder, 0.01 to 1% wetting agent selected from the group consisting of anion- active compounds, non-ionic compounds, and mixtures thereof, 7 to 25% aluminum powder and/or aluminum chips, 3 to 15% iron oxide and/or manganese dioxide, and not exceeding 6% cryolite;
- ______________________________________
- the method steps of preparing dry flakes or pellets of a mixture of the components, and directly pressing said flakes or pellets to form the lining.
Dependencies are inferred from the claim text.