www.concreteproducts.com July 2017 • 47
COVER STORY
MCINNIS CEMENT
Graded limestone plus silica, alumina and iron materials exit the
pre-heater tower at 300°C after 10 minutes, entering the 17-ft.
diameter, 246-ft. long kiln, (shown above from the west) for a
20-minute residence time at 1,000°C. Partially cooled clinker then
travels to one of the three 40,000-tonne silos.
WAREHOUSE, KILN, LAB PHOTOS: Concrete Products
Alongside two cement labs in the administration building (forward
the kiln) is a full-bore concrete lab, capable of validating mix de-
signs based on McInnis Type I/II low or moderate alkali and Type III
cements plus aggregates from Great Lakes, Northeast and Mid-At-
lantic regions.