Horizontal Mixing Chambers

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Horizontal Mixing Chambers

The D&H Horizontal Mixing Chamber is an innovative solution to mixing asphalt, rubber, polymer, or any dry powder. It effectively inline blends both small batches to continuous large-scale production. The D&H design advantage includes greater consistency than high speed impellor mixing tanks and less air injection than vortex mixing systems, while providing enhanced assurance of complete coating.

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General Specifications

  • Field-proven for nearly a decade to handle heavily-modified asphalt blending production rates from 10TPH up to 60TPH+ of continuous use
  • 85 gallon, single-chamber, heat-jacketed chamber
  • Two mixing stages featuring a combination of flighting, breaker bars, and mixing paddles
  • 200rpm single-speed electric motor and gearbox
  • Heat-traced with 2” high-density insulation
  • Backflow preventative device with overflow and dual-redundant high-level safety switches
  • 2” liquid inlet, 8” x 8” dry feed inlet, 6” outlet, 4” drain, and 6” sump to catch foreign metals

Advantages of the D&H Blending Solution Design

Greater mixing agitation and coating of rubber, polymer, or any dry powder

  • All product must pass completely through the mixing chamber
  • Active mixing works with a wide range of production speeds
  • Easily handles extremely highly-modified products (22% crumb rubber or 15%SBS)
  • Less air injection and oxidation potential than vortex systems

Minimal maintenance, cleaning, and equipment downtime

  • Average yearly cost of high-speed impellor maintenance is approximately $1,200
  • Horizontal Mixer is extremely easy to completely drain and/or flush system clean
  • Internal bushing on discharge side of auger eliminates any leaking from an auger seal

Safer and more controlled system

  • Not open to outside atmosphere
  • Does not rely on gravity-fed discharge
  • Product is mechanically fed through the system which does not allow froth to form on top of mixing product & any foaming/expansion is diverted downstream to larger storage tanks

In polymer-modified blending systems, it can wet & deliver polymer to the mill much faster

  • More efficient milling because the polymer has not had time to heat and soften
  • When polymer reaches the mill, it has a greater tendency to cut/shatter than extrude