Specialized tanks for reacting rubberized asphalts. Reaction tanks are needed in the production of asphalt rubber and many other rubber-modified asphalt products. After passing through a blending system, the product is stored and reacted inside the tank (typically for 30 minutes up to 1 hour). Aggressive agitation inside the tank promotes a uniform reaction, ensures the particles remains suspended, and produces a consistent blend. During this time, the rubber particles swell as they absorb some of the asphaltenes while simultaneously releasing some of their lighter oils into the asphalt – this reaction provides the many beneficial properties associated with this modified asphalt.
See our TANK OPTIONS page for more information on many of the ways D&H can customize a tank solution for your application.
Having adequate agitation is key to producing asphalt rubber with minimal tank maintenance. Horizontal tanks with screw auger agitation along the entire tank bottom offer the best-practice solution. The advantages include:
Asphalt rubber production is especially tough on auger seals as a result of higher product temperatures and viscosities, constant heat cycling, and undigested rubber particles. for this reason, other tank manufacturers offer either inadequate impellor agitation or maintenance-heavy screw auger seals.
The D&H Top-Mounted Agitation solution offers the best-practice screw auger agitation without the disadvantages of other systems. Our system consists of an up-mounted motor and gearbox with an extremely heavy-duty 90° angle-mounted ring and pinion gearbox.
Advantages of the D&H Top-Mounted Agitation System: