Is Limestone Dust Dangerous
3 8 Crushed Limestone. NJ DOT 8 crushed stone is used for construction purposes, such as parking areas, septic drain fields, bike trails, walkways, roofing stone, and tar and chip driveways. 1 4 Crushed Limestone. NJ DOT 10 is used for construction purposes such as paving stones, bicycle trails, underdrain construction, parking areas.
Pre-Conditioning. Mined limestone is first crushed into a fine powder. If necessary, a rotary dryer is used to dry the mined limestone before it is crushed. Next, a raw material feed bin is used to introduce the crushed limestone to the pelletization process. A pin mixer uses an intense spinning action to combine the limestone and binder.