The invention discloses a shell utilization method. The method comprises the following steps: removing impurities on the shells, fully washing the shells, scrubbing the shells in
alkaline water to remove the oil stains, then washing the shells by
clean water, rinsing the shells to neutralize the shells; draining the shells to remove the water; placing the shells on a ball-milling cylinder, adding
distilled water, carrying out ball milling; taking out the grinded shell, evenly paving the shell on a disc, baking the shell in a baking oven at a constant temperature of 120 to 160 DEG C,
cutting off the power supply when the shell turns yellow and
cracking sound appears, cooling to a temperature of 60 to 70 DEG C, taking out the shell quickly;
grinding the shell when the shell is still hot, then baking the shell in the baking oven again, finely
grinding, sieving; adding the obtain shell
powder in a boiler, adding vinegar, heating, frying; adding the shell
powder into poultry feed, wherein the shell
powder accounts for 5 to 10% of the total weight of the poultry feed, and evenly stirring. The shell is made into shell powder, the feed is mixed with shell powder, the feed can well treat the poultry diseases caused by
calcium deficiency, moreover, the feed can promote the growth, and at the same time the egg yield is increased.