Process and apparatus for producing portland and other hydraulic cements
OwnerEddie K. Wilson, Sr.inventor
Life of this patent
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Abstract
A hydraulic cement, such as portland cement, is produced by filling a furnace shell with the desired cement in a powdered condition. By the application of intense heat to the filling a skull is developed that lines an upwardly opening cavity. The heat, which may be supplied by electric arcs, is continued within the skull to maintain a pool of melt that has the same chemical composition as the skull and therefore does not react with the skull. Feed materials are introduced into the melt, and these materials are suitably proportioned to chemically combine within the melt without changing the chemical composition of the melt. The melt is drawn off through a tap hole and cooled to provide the desired cement.
Claims21
A process for producing a hydraulic cement, such as portland cement, said process comprising:
- maintaining a melt within a cavity that is lined with a material having substantially the same chemical composition as the desired cement, the melt also having substantially the same chemical composition as the desired cement, whereby the melt does not react with the material that lines the cavity;
- introducing appropriate feed materials into the melt within the cavity with the feed materials containing compounds suitably proportioned for the desired cement;
- heating the melt within the cavity sufficiently to enable the feed materials to be in a molten condition and to chemically combine within the melt, the heating being effected by electrical energy;
- withdrawing the melt from the cavity;
- and cooling the withdrawn melt to solidify it into a solid substance that has the chemical constituency and properties of the desired cement.
A process for producing a cement, said process comprising:
- placing a filling of cement that is in a powdered condition in a shell;
- heating the filling at the upper surface thereof sufficiently to create a shallow pool of melt that is surrounded by a solid nonpulverulent skull;
- draining the pool to produce a cavity that is lined by the skull in the filling;
- maintaining the pool at the bottom of the cavity in the skull by heating the melt of the pool;
- introducing feed materials into the melt with the feed materials containing compounds proportioned such that they react and chemically combine within the melt without substantially changing the chemical composition of the melt, whereby the melt does not react chemically with the skull;
- and withdrawing some of the melt from the pool.
Dependencies are inferred from the claim text.