A double-stage screenless sand making machine crushes wet and sticky material without clogging. It uses two rotors and removes the screen mesh entirely. The result is stable output, uniform particle size, and lower maintenance. This machine is built for construction waste, recycled sand, and wet aggregate.
What Is a Double-Stage Screenless Sand Making Machine?
It is also called a double rotor screenless crusher.
This machine belongs to the medium-fine crushing family.
It solves the screen-clogging problem of traditional hammer crushers.
Two rotors are stacked inside the crushing chamber.
There is no screen mesh at the bottom.
Material enters once and goes through two crushing stages.
The machine directly produces finished sand.
No secondary screening equipment is needed.
This simplifies the whole sand production line.
How Does the Double Rotor Crusher Work?
Raw material enters the upper crushing chamber first.
The upper rotor spins at high speed.
Hammer heads hit the material for primary crushing.
Broken material drops into the lower chamber.
The second rotor strikes and grinds it again.
Because there is no screen, material exits freely.
Particle size is controlled by hammer gap adjustment.
Users can change the gap to adjust output size.
Finished sand is normally below 3mm.
A large share of the output stays under 2mm.
Material also hits itself inside the chamber.
This shapes the grains and reduces flat pieces.
Key Benefits of the Screenless Sand Crusher
1. No Screen — Wet Material Never Clogs
Traditional crushers with screens clog on wet material.
Operators have to stop and clean them often.
This machine removes the screen completely.
The clogging source is gone.
Rainy-season production runs smoothly.
High-clay and wet material is no longer a problem.
2. Dual Rotors — Uniform Output in One Pass
One machine does both coarse and fine crushing.
The reduction ratio is large.
Output particle size stays stable.
The production line needs fewer machines.
Total project investment drops.
3. Wide Range of Feed Materials
This sand making machine handles many brittle materials.
Typical feeds include construction waste and concrete.
It also processes brick, gangue, shale, and limestone.
Coal cinder and steel slag work too.
Both dry and wet material are accepted.
4. Low Maintenance Cost
Hammer heads use high-chromium alloy.
They are highly wear-resistant.
The gap-adjustment structure improves hammer usage.
Replacement frequency is reduced.
Fewer parts mean fewer failure points.
Daily maintenance is simple.
5. Flexible Capacity
Main models output from 10 to 120 tons per hour.
Maximum feed size reaches 200mm.
It fits small and medium sand projects.
Main Applications of the Screenless Sand Making Machine
- Construction waste recycling. It crushes waste concrete and brick into recycled aggregate.
- Brick plant raw material. It grinds gangue and shale for brick mix.
- Reuse of mine waste, cinder, and steel slag.
- Medium sand and gravel plants for manufactured sand.
- Fine crushing in solid waste recycling lines.
How to Choose the Right Model
- Check the maximum feed size first. Match it to the inlet opening.
- Confirm the required output per hour. Pick the right model size.
- Define the target particle size. Leave room for gap adjustment.
- Evaluate material moisture and hardness. Confirm the machine fits.
- Check motor power. Make sure it matches your power supply.
