A sand temperature and flow control system for coating sand using a sand heater, a sand batch mixer, and a continuous mixer. A heater burner combustion blower draws ambient air through a heat exchanger and delivers hot air to a sand heater. A cyclone fan draws hot exhaust air from the sand heater through the heat exchanger. The sand heater is filled with sand and heated to a desired temperature. The heated sand is delivered into the sand batch mixer to form a coating on the sand and the coated sand is delivered to a continuous mixer. The entire process of filling the sand heater with sand, heating the sand, delivering the heated sand into the sand batch mixer, and delivering coated sand from the sand batch mixer to the continuous mixer is a continuous process producing a final product of coated sand continuously.