Hot Rocks®
aggregate heating system
Thaws frozen aggregates using a high volume of hot, high pressure air. Operation and control are fully automated. The system enables weather and climate-independent concrete production and is ideal for many different types of storage facilities (rectangular, radial, or inline).
Functions
Hot Rocks®
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Function 1
Hot Rocks®
Air distribution line fabricated of galvanized steel with 30 mm insulation to reduce heat loss and improve efficiency.
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Function 2
Hot Rocks®
When the material temperature drops below a given set-point, the system operates automatically to provide heat to the storage bins or silos.
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Function 3
Hot Rocks®
Individual heat supply nozzles are connected to the main hot air supply duct via high temperature hoses.
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Function 4
Hot Rocks®
The diffuser is located at the bottom of the bin or silo – near the material discharge. A two-level diffuser is used for sand.
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Function 5
Hot Rocks®
A single level diffuser is used for stone.
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Function 6
Hot Rocks®
High quality air heater manufactured of stainless steel with a maximum air temperature equal to 160 °C and a maximum pressure equal to 6000 Pa.
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Function 7
Hot Rocks®
Automatic on/off and thermostat controls for each bin or silo provide for unsupervised operation.
Videos
Hot Rocks®
Animation Hot Rocks
Animation Hot Rocks Bin Detail
Benefit
Hot Rocks®
high pressure radial ventilator provides excellent heat distribution through stone and sand
air supply temperature equal to 160 °C
heavy-duty design
energy efficiency equal to 93%
automatic operation and temperature control
elimination of ice in the concrete mix
no combustion gases in the bins or silos
heat may also be used for comfort heat in the mixer area
reduced material moisture content
Main Products for Hot Rocks®
Kraft Curing
Quadrix®
Precise control of air flow, temperature and humidity in a single atmosphere chamber provides constant consistency and reduces costs.
Nautilus™
The economical air circulation solution utilizes the heat from cement hydration and moisture from the concrete.
Nautilus™ D.I.Y. Kit
KRAFT CURING offers reliable quality of equipment to improve concrete quality while saving money.
Convect-Air®
Controlled heat addition and constant air circulation suited for higher temperature curing and drying.
Vapor Curing I
Controlled addition of heat, humidity and carbon-dioxide for the accelerated curing of concrete block, block paving and cast stone products in insulated enclosures.
Projects
Hot Rocks®
Concrete curing environment for architectural and landscaping products at Northfield Block
Northfield Block, an Oldcastle company with locations throughout Illinois, has been in business since 1949. It has built a reputation on aesthetically pleasing and quality products. In 2005, Northfield Block...Read More
Documents
Hot Rocks®
Hot Rocks® Brochure
HOT ROCKS® AGGREGATE HEATING SYSTEM
Hot Rocks® Flyer
HOT ROCKS® AGGREGATE HEATING SYSTEM
Contact
Hot Rocks®
Mark Kraft
North America, South America, Australia, New Zealand, South-East Asia
