Efficient material preparation is essential when contractors need to batch and pump materials directly at a job site. A reliable hydraulic spiral mixer can provide controlled mixing, while a hydraulic discharge system can make transferring material to the pumping stage more efficient.
The Blastcrete D6528 Mixer/Pump combines these functions with a 9 cubic foot hydraulic spiral mixer, hydraulic dump system, 12 cubic foot receiving hopper, and 3-inch hydraulic squeeze pump. Designed for field batching and pumping, the D6528 can produce and pump material at rates of up to 12 cubic yards per hour.
What Is a Hydraulic Spiral Mixer?
A hydraulic spiral mixer uses a hydraulic-powered mixing system to combine materials before they are transferred to the next stage of a construction process.
In the D6528, the hydraulic spiral mixer has a capacity of 9 cubic feet. It is designed for field batching and includes a hydraulic dump system that allows the mixed material to be discharged directly into the receiving hopper.
This arrangement eliminates the need for a separate manual transfer between the mixer and hopper, creating a more integrated material-handling process.
D6528 Hydraulic Dump Mixer
The D6528 can also be described as a hydraulic dump mixer because its mixer uses hydraulic power to discharge the prepared material into the receiving hopper.
After the mixing cycle is completed, the mixer hydraulically dumps into the 12 cubic foot receiving hopper. A hydraulic agitator in the hopper helps manage the material before it enters the pump.
The hydraulic dump function is an important part of the D6528 because it connects the mixing and pumping stages within one machine.
How the D6528 Mixing System Works
The D6528 follows a coordinated sequence from batching to pumping.
1. Load the Mixer
Materials are placed into the 9 cubic foot hydraulic spiral mixer according to the applicable material and project requirements.
2. Hydraulic Mixing
The spiral mixer combines the materials during the batching process. The hydraulic drive provides the operating power for the mixer.
3. Hydraulic Dumping
Once mixing is complete, the mixer hydraulically discharges the material into the receiving hopper.
4. Hopper Agitation
The 12 cubic foot receiving hopper includes a hydraulic agitator to assist with material management before pumping.
5. Hydraulic Pumping
The material is then moved through a 3-inch hydraulic squeeze pump driven by a heavy-duty planetary gearbox.
6. Variable Material Output
The pumping system operates at variable speeds from 0 to 12 cubic yards per hour, providing adjustable material delivery.
9 Cubic Foot Hydraulic Spiral Mixer
The 9 cubic foot mixer is the primary batching component of the D6528.
Its hydraulic spiral mixing system is designed to provide field mixing capacity while the hydraulic dump system allows material to be discharged directly into the receiving hopper.
The mixer also features a clean-out door, which provides access for cleaning following mixing operations.
Hydraulic Mixer Features
The D6528 mixer includes:
9 cubic foot capacity
Hydraulic spiral mixing
Hydraulic dump
Clean-out door
Direct discharge into the receiving hopper
Together, these features provide a dedicated mixing and discharge system within the D6528.
Hydraulic Dump Function
The hydraulic dump mixer configuration allows the D6528 to move mixed material from the mixer to the hopper without requiring manual material transfer.
The hydraulic dump is integrated into the machine's material flow:
Mixer → Hydraulic Dump → Receiving Hopper → Squeeze Pump
This direct sequence helps connect the batching stage with the pumping stage.
The hydraulic dump also allows the operator to control the discharge process as part of the machine's overall hydraulic operation.
12 Cubic Foot Receiving Hopper
Once the material leaves the hydraulic spiral mixer, it enters the 12 cubic foot receiving hopper.
The hopper has a larger stated capacity than the mixer and includes a hydraulic agitator. Its purpose is to receive and manage mixed material before it reaches the squeeze pump.
This intermediate stage helps separate the mixing process from the pumping process while keeping both operations within the same equipment package.
3-Inch Hydraulic Squeeze Pump
After the material reaches the hopper, the D6528's 3-inch hydraulic squeeze pump moves it toward the application area.
The pump is driven by a heavy-duty planetary gearbox and provides variable-speed operation from 0 to 12 cubic yards per hour.
The pumping system also uses tubes designed for long service life, supporting repeated pumping operations.
D6528 Technical Specifications
Specification D6528
Length 204 inches
Width 88 inches
Water Tank Height 89 inches
Mixer Height — Dump Position 86 inches
Charging Height 48 inches
Output Capacity 0–12 cubic yards per hour
Mixer Capacity 9 cubic feet
Receiving Hopper Capacity 12 cubic feet
Pump 3-inch hydraulic squeeze pump
These dimensions and capacities can help contractors evaluate the machine for transportation, placement, production, and job-site access.
Power Options for the Hydraulic Mixer
The D6528 is available with two primary power configurations.
Kubota V1505 Diesel Engine
The diesel configuration uses a Kubota V1505 29 HP water-cooled diesel engine. This provides an engine-powered option for field applications.
30 HP Electric Motor
An alternative configuration uses a 30 HP electric motor with starter and disconnect. This can be appropriate for job sites with suitable electrical service.
The choice of power source can depend on job-site conditions and contractor requirements.
Additional D6528 Options
Several options are available for the D6528:
Pendant or wireless remote
150-gallon water tank with 2-inch flow meter
Mounted spare tire
Hydraulic pressure washer
Dual axles
Mounted air compressor
These options allow contractors to configure the equipment for different operating conditions and transportation requirements.
Hydraulic Spiral Mixer for Gypsum Flooring
The D6528 is a popular solution for gypsum flooring applications. Its hydraulic spiral mixer provides field batching capability, while the hydraulic dump and receiving hopper create a direct path to the pumping system.
For gypsum flooring contractors, this integrated design can simplify the movement of compatible mixed material from preparation to application.
The specific gypsum material should always be mixed and pumped according to the manufacturer's instructions, including recommended mix proportions, consistency, pumping requirements, and installation procedures.
Benefits of a Hydraulic Dump Mixer
A hydraulic dump mixer can provide several practical advantages in field batching applications.
Direct Material Discharge
The hydraulic dump transfers mixed material directly into the receiving hopper.
Reduced Manual Handling
Material does not need to be manually moved between separate mixing and pumping equipment.
Integrated Operation
Mixing, dumping, hopper agitation, and pumping are incorporated into one equipment system.
Controlled Material Flow
The hydraulic system allows the discharge and pumping stages to work together as part of the machine's overall operation.
Maintenance and Cleaning
Proper cleaning and maintenance are essential when operating a hydraulic mixer and pump.
The D6528 includes a mixer clean-out door to help with cleaning after material preparation. Operators should also inspect the hydraulic system, receiving hopper, squeeze pump, and pumping tubes according to the manufacturer's recommended maintenance procedures.
Keeping material from accumulating in the mixer and material-handling components can help support consistent operation.
Why Choose the D6528?
The D6528 combines a 9 cubic foot hydraulic spiral mixer with a hydraulic dump, 12 cubic foot receiving hopper, and 3-inch squeeze pump.
This gives contractors a complete field-batching and pumping sequence in one machine:
9 cubic foot hydraulic spiral mixer → hydraulic dump → 12 cubic foot hopper → 3-inch squeeze pump
With variable pumping output from 0 to 12 cubic yards per hour, the D6528 provides flexibility for field production and material delivery.
D6528 Hydraulic Spiral Mixer and Hydraulic Dump Mixer for Field Batching
