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US 4,301,133 AGranted
Method for preparing a calcium carbide product
AssigneeNational Research Development Corporation
InventorEdward O. Hayes
Life of this patent
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Abstract
A product suitable for the production of fuel gas upon reaction with water which is prepared by reacting a uniform mixture of finely divided calcium oxide and carbon under pressure in the presence of pyrophosphoric acid.
Claims10
A method for the production of calcium carbide which comprises reacting a uniform mixture of finely divided calcium oxide and finely divided carbon with pyrophosphoric acid under pressure.
A method for the production of calcium carbide which comprises the steps:
- (a) forming a uniform mixture comprising from 60 to 80 percent calcium oxide and 20 to 40 percent carbon, each having a particle size of 60 mesh or finer;
- (b) simultaneously adding to said mixture an amount of pyrophosphoric acid sufficient to form a paste of said mixture and subjecting the paste to pressure in a closed reactor;
- and
- (c) allowing the reaction product of step (b) to dry to a hard mass.
1 more element
Dependencies are inferred from the claim text.