US PATENT SUBCLASS 423 / 174-- .~.~.~ Forming calcium carbide

US PATENT SUBCLASS 423 / 174
.~.~.~ Forming calcium carbide

423 /	HD	CHEMISTRY OF INORGANIC COMPOUNDS

1	DF	TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
155	DF	.~ Alkaline earth metal (Mg, Ca, Sr, or Ba) {11}
173	DF	.~.~ Treating impure carbonate (e.g., oyster shells, etc.) {2}
174		.~.~.~ Forming calcium carbide

Classification: 423/174

(under subclass 173) Processes including the step of chemically forming calcium carbide (CaC_{2[end subscrpt]).}