Logwashers
PHOENIX/KISA twin shaft logwashers are an essential component of a wash plant's aggregate washing equipment. The logwashers remove dirt, loam, clay contaminants, and other deleterious materials from raw aggregate materials such as dirty limestone, dolomite, and high silica content gravel. With the capability of handling large rock, high tonnage feed capacities from 220 - 660 STPH and rugged shafts and paddles, these logwashers are suitable for a variety of applications requiring severe scrubbing and de-agglomeration.
The SWX twin shaft logwasher is available in several power arrangements and tonnage outputs and accommodate rock up to 12 inches.
The SWX twin shaft logwasher is available in several power arrangements and tonnage outputs and accommodate rock up to 12 inches.
Features & Benefits
- Continuous feeding of material up to 660 STPH provides maximum efficiency
- Feed handling capacity up to 12 inch rock accommodates a variety of aggregate washing applications
- Force-synchronized, counterrotating twin shafts with heavy-duty steel paddles crush low-density particles for effective washing of impurities
- Low water consumption of 400 - 800 GPM depending on machine size and feedstock
- Optional upflow nozzles can be added for higher rates of wood and organic removal
Dirty Solids Material Feed
Dirty aggregate material is fed to the lower end of the logwasher trough.
Spray Bars
Water added via spray bars at the top end of the trough.
Paddle Action
Solids are slowly advanced up the inclined trough.
Twin Shafts
Interlocked, counter-rotating twin shafts with staggered paddles create intense paddle-rock & rock-on-rock shear.
Discharge Chute
Scrubbed material dumps from the discharge chute.
Discharge Launders
Discharge for liberated waste fines & low density material that is suspended in effluent.

Process Technologies
- Severe Scrubbing
- Washing