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Concrete manufacturing using direct steam injection

Flow Rate:
27 GPM [7 m³/hr]

Inlet Temperature:
45°F [7°C]

Discharge Temperature:
150-200°F [66-93°C]

Target Mix Temperature:
75°F [24°C]

Water Inlet Pressure:
45 PSIG [3.1 barg]

Steam Supply Pressure:
100 PSIG [6.9 barg]


Heating raw aggregate with outside fluctuating temperatures.

Spancrete in Waukesha, Wisconsin, USA, needed help heating raw aggregate prior to entering the mix tank with outside fluctuating temperatures. They needed to: improve consistency of batches, ensure proper curing, improve efficiencies of the current process, and reduce energy costs.


Hydro-Thermal’s EZ Heater model H2015 was installed in Spancrete’s Waukesha production facility to adhere to each of the specifications desired.

Installation of the unit has proven the inherent advantages of its design with:

• Consistent batches throughout the year to ensure proper curing
• Reduced batch cycle time by 50%
• Decreased energy costs by 25% over other heating practices
• Eliminated hard water maintenance issues with self-cleaning design


• Improve batch consistency
• Ensure proper curing
• Eliminate inefficiencies
• Reduce energy costs


• Consistent batches
• Reduced batch cycle time by 50%
• Decreased energy costs by 25%
• Eliminated excessive maintenance



Are you curious about our patented direct steam injection technology? Click here to learn more.

Are you wondering what applications are ideal for direct steam injection? See the Where It Works section for the a list of industries.

Do you want to learn more about our products? Click here for more information.

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Hydro-Thermal is the global leader in the development and manufacturing of Hydroheaters. Through our vast global channel partners, we support hydro heating in six continents and all industrialized areas. We create heating systems for a variety of industries including: pulp, paper, chemical, ethanol, food & beverage, metal, & more!

Hydro-Thermal Corporate 

400 Pilot Court
Waukesha, WI 53188 USA
Phone: (262) 548-8900
Fax: (262) 548- 8908