Material rebound is an important consideration in refractory gunning operations. Proper preparation of gunning materials can help operators manage application conditions and improve material utilization. A Predampener for reducing material rebound is designed to introduce controlled moisture into gunning materials before they reach the nozzle.
The Blastcrete Predampener is designed to add up to 5% moisture to gunning materials to support proper hydration at the nozzle while helping minimize rebound. Its completely hydrostatic design provides precise control over material predampening and output, while two solenoid-activated water bars provide simple water-volume adjustment.
How a Predampener Helps Reduce Material Rebound
A Predampener prepares gunning materials by introducing controlled moisture before nozzle application. The Blastcrete Predampener is designed to add up to 5% moisture to gunning materials.
Controlled predampening supports proper hydration at the nozzle and is intended to help minimize rebound during refractory application.
The system combines material feeding, hydrostatic predampening, controlled water addition, and mixing into one piece of equipment.
Hydrostatic Predampening for Consistent Material Preparation
The Blastcrete Predampener features a 9-inch hydrostatic predampening auger.
Its completely hydrostatic operation allows precise material predampening and output control. This gives operators greater control over how material moves through the system and how moisture is introduced.
The hydrostatic design is particularly useful for industrial applications requiring controlled material processing.
Controlled Water Addition
The Predampener uses two solenoid-activated water bars to introduce moisture into gunning materials.
Water volume can be adjusted simply, allowing operators to manage moisture addition according to application requirements.
The system can add up to 5% moisture to the material, supporting proper hydration at the nozzle while helping minimize rebound.
Mixing Auger for Moisture Distribution
The equipment includes a mixing auger with a removable rubber enclosure.
The mixing auger helps distribute the added moisture through the gunning material as it moves through the system. The removable enclosure provides access for inspection and maintenance.
The combination of predampening and mixing provides a controlled method of preparing material before it reaches the nozzle.
High-Capacity Refractory Material Processing
The Predampener is designed for industrial applications with an output range of 0-12 tons per hour.
Its hopper can hold up to 3,000 pounds of material and includes a material feed screw for controlled material movement.
This high-capacity design supports continuous material processing for demanding refractory gunning operations.
Predampener Features
The Blastcrete Predampener includes:
9-inch hydrostatic predampening auger
Mixing auger with removable rubber enclosure
Up to 3,000-pound hopper capacity
Material feed screw
Two solenoid water bars
Adjustable water volume
20 HP electric motor
Disconnect and electrical enclosure
Skid-mounted construction
Forklift tubing and pickup
Optional trailer-mounted configuration
Predampener Specifications
Specification Details
Output 0-12 tons per hour
Hopper Capacity Up to 3,000 lbs.
Predampening Auger 9-inch hydrostatic
Mounting Skid mount with forklift pickup
Dimensions 156" x 60" x 72"
Weight 2,800 lbs.
Motor 20 HP electric
Power Options 240V or 480V, 3-phase
Water System Two solenoid water bars
Optional Configuration Trailer mounted
Supporting Proper Hydration at the Nozzle
The Predampener is designed to add controlled moisture before gunning material reaches the nozzle.
This controlled predampening is intended to support proper hydration at the nozzle and help minimize rebound. Operators can adjust the water volume while the hydrostatic system provides control over material predampening and output.
20 HP Electric Motor
The Predampener is equipped with a 20 HP electric motor, disconnect, and electrical enclosure.
Power options include:
240V, 3-phase
480V, 3-phase
Operators should confirm the appropriate electrical configuration before installation.
Skid-Mounted Configuration
The standard unit is skid mounted with forklift tubing, providing convenient forklift pickup and positioning.
This configuration can be useful for industrial facilities and job sites where equipment needs to be moved between work areas.
For applications requiring increased mobility, an optional trailer-mounted configuration is available.
Benefits of Predampening for Refractory Gunning
A dedicated Predampener can help operators manage several aspects of material preparation:
Controlled moisture addition
Up to 5% moisture capability
Proper hydration support at the nozzle
Potentially reduced material rebound
Precise hydrostatic predampening
Adjustable water volume
Controlled material output
High-volume processing
Integrated mixing
Large material hopper
Flexible mounting options
Why Moisture Control Matters
Consistent moisture preparation can be important when applying refractory gunning materials. The Predampener provides a dedicated system for adding and mixing controlled moisture before nozzle application.
Rather than relying on uncontrolled moisture addition, operators can adjust water volume through the two solenoid water bars while controlling material predampening and output through the hydrostatic system.
Selecting a Predampener
When selecting a Predampener for reducing material rebound, consider the required production capacity, hopper size, moisture requirements, electrical configuration, and equipment mobility.
The Blastcrete Predampener offers an output range of 0-12 tons per hour, a hopper capacity of up to 3,000 pounds, a 9-inch hydrostatic predampening auger, two solenoid water bars, and a 20 HP electric motor.
These features provide an integrated solution for refractory gunning material preparation.
Predampener for Reducing Material Rebound in Refractory Gunning Applications
