INDUSTRY: WASHING
material type: Recycled Material, Aggregates, Concrete Sand, Asphalt Sand
Washing Systems
Sand Screws 3625/4432 Single & Twin
The Lippmann Sand Screws offer a low cost solution to sand/fines recovery after rinsing and passing through a washing screen. The Sand Screw can be used in conjunction with static and mobile washing screens to effectively recover and dewater your washed sand.
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Highlights
- Heavy-duty design with heat-treated helical gears
- Triple reduction gearing allows 100% to 16% speed changes
- 100% of the shaft’s thrust load carried by the output shaft(s)
- Oil bath lubrication for maintenance-free operation
- Drive guards standard equipment
- Helical spiral segments with continuous submerged arc weld
- Extra-thick, one piece shaft tubing
- Internal and external baffles to deaden feed velocities
- Provides uniform slurry mixture for maximum product retention
Overflow weir
Drain plugs
Washer supports
- Fabricated with thick gauge steel
- Close-clearance curved plate runs entire length of shaft
- Extra-wide side flares for maximum product retention
- Adjustable weirs for out of level conditions
- Spherical-roller rear grease bearing(s)
- High-efficiency electric motor(s)
Discharge chute
Standard Features & Options
Features
- Up to 100TPH
- Heavy duty screws for high capacity fines recovery
- Cast wear plates on spiral blades
- Heavy-duty design with heat-treated helical gears
- Adjustable weir plates
- Low maintenance
- Electric or hydraulic drive system
- Replaceable shoe liners
- Remote grease points
- Easy to assemble
Options
- Standalone Electric
- Coupled Hydraulic with rinser
- Overflow flume
- Safety covers
- Discharge chute
Technical Specs
| SCREW WASHER CAPACITY | |||||
|---|---|---|---|---|---|
| Sand Product passing 50 Mesh (0.3mm) | Screw Speed | Dewater Capacity | Sand Product passing 50 Mesh (0.3mm) | Screw Speed | Dewater Capacity |
| ≤ 15% | 100% | 100% | ≤ 30% | 50% | 50% |
| ≤ 15% | 75% | 75% | ≤ 50% | 25% | 25% |
| WATER REQUIREMENTS PROCESS | ||||||||
|---|---|---|---|---|---|---|---|---|
| Dry deck clearing water (water added at the top end of the screw) | Rising current water in the back pool area of the screw washer | |||||||
| 36″x25″ | 44″x32″ | 36″x25″ | 44×32″ | |||||
| SINGLE | TWIN | SINGLE | TWIN | SINGLE | TWIN | SINGLE | TWIN | |
| USgpm @ 25psi | 170 | 170 | 170 | 170 | 150 | 275 | 190 | 300 |
| m3/h | 38 | 38 | 38 | 38 | 34 | 62 | 43 | 68 |
| REQUIREMENTS | ||||
|---|---|---|---|---|
| 3625S | 3625T | 4432S | 4432T | |
| Motor Power Recommended | 15hp | 15hp x 2 | 25hp | 25hp x 2 |
| Max Feed (MTPH) | 100 (90) | 200 (130) | 100 (90) | 200 (130) |
| Max Screw Speed | 20rpm | 20rpm | 17rpm | 17rpm |
| Estimated Operating Weights Lbs (Kg) | 30,000 (13,600) | 60,000 (27,215) | 70,000 (31,751) | 130,000 (58,967) |
| Water Capacity 100 mesh (149 micros) GPM (m3/h) | 720 (163) | 1250 (283) | 1720 (390) | 2800 (635) |
| Water Capacity 200 mesh (75 micros) GPM (m3/h) | 180 (40) | 360 (81) | 425 (96) | 700 (158) |
| DIMENSIONS & WEIGHTS | ||||
|---|---|---|---|---|
| 3625S | 3625T | 4432S | 4432T | |
| Length | 8.6m (28’) | 8.5m (28’) | 10.5m (35’) | 10.5m (35’) |
| Width | 2.6m (8’) | 3.6m (12’) | 3.6m (12’) | 4.9m (16’) |
| Height | 3.9m (13’) | 3.9m (13’) | 4.8m (15’) | 4.9m (16’) |
| MTPH | 100 (90) | 200 (130) | 175 (159) | 350 (318) |
