Plastic Refractories: Highlighting Phosphate Bonds

April 3, 2020

TFL is a distributor of Plibrico refractory products and carries a wide selection of Plibrico phosphate-bonded refractories. Compared to other monolithic materials, chemically-setting phosphate-bonded refractories offer good refractoriness under load (RUL), volume stability, abrasion resistance, slag resistance, high hot strength, and most are non-wetting to aluminum. These products utilize a high mullite content aggregate in an alumina-fortified phosphate-bonding matrix that incorporates Plibrico Company’s proprietary monoaluminium phosphate.

Check out Plibrico phosphate-bonded refractories for their unique and versatile properties.
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Plibrico Phosphate-Bonded Refractories

Within the plastic refractory category, we offer a number of different phosphate-bonded products. This week, we’ll be highlighting a few popular materials from our Plibrico phosphate-bonded refractory selection. These chemically setting plastics offer long term performance for refractory linings in many industries.

  • Plibrico 68 S
  • Plibrico 68 SA
  • Plibrico 85 S Special
  • Plibrico 90 S
  • Plibrico SR-90

Plibrico 68 S

Plibrico 68 S is mullite-based, phosphate-bonded plastic refractory. Its service temperature limit of 3100°F and high hot strength make this material an effective selection for burner cones, boilers, and incinerator slagging areas. In addition, as Plibrico 68 S is non-wetting to aluminum, it works well in aluminum lower sidewalls, hearths, upper walls and roofs, troughs and lauders.

 

See the  Plibrico 68 S technical data sheet for product details.

 

Plibrico 68 SA

Plibrico 68 SA is similar to Plibrico 68 S in chemical composition, but different in its improved aggregate sizing distribution. This improvement gives Plibrico 68 SA a smoother texture, improves ramming characteristics, and reduces slumping.

 

See the  Plibrico 68 SA technical data sheet for product details.

 

Plibrico 85 S Special

Plibrico 85 S Special is a versatile, high-purity plastic refractory. It is non-wetting to aluminum alloys and has been designed to be chemical and abrasion-resistant. Plibrico 85-S Special is an excellent product for boilers, incinerators, wood-fired burners, and many other applications.

 

See the  Plibrico 85 S Special technical data sheet for product details.

 

Plibrico 90-S

Plibrico 90 S is a 90% alumina, phosphate-bonded plastic refractory. This product is tailored to applications which require a high service temperature (3400°F service limit) and high material strengths, including burner cones, furnace hearths, slag areas, and sulfur recovery units.

 

See the  Plibrico 90 S technical data sheet for product details.

 

Plibrico SR-90

Also, a 90% alumina, phosphate-bonded refractories, Plibrico SR-90 is manufactured with a soft plastic consistency and is designed for thin applications. Its fine grain size and high workability make Plibrico SR-90 ideal for patching and repairing existing linings.

 

See the  Plibrico SR-90 technical data sheet for product details.

 

Pro Tip: TFL is proud to offer solutions for a variety of projects. Our engineers are experienced and trained to design refractory linings to meet your unique needs.

Plastic Refractory Solutions for Your Business

TFL is your source for innovative refractory solutions. We offer superior plastic refractory materials to support your thermal processing equipment for long term performance. With a wide range of products, it is our goal to provide the right material for all of your refractory needs.

Have you used any of our Plibrico Phosphate-Bonded Refractories? Share with us on social media!

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By Paul Fisher • April 19, 2022
The East Bay Municipal Utility District (EBMUD) Wastewater Treatment Plant, located on the eastern shore of San Francisco Bay, provides service for an estimated 740,000 people in the greater Oakland, California area. In addition to traditional wastewater treatment, the plant also collects and treats solid waste from Bay Area food and animal processing facilities, restaurants, and wineries, diverting this waste stream away from landfills. The methane gas that is generated from the decomposition of this solid waste is then used internally as a renewable source of energy to help supply the treatment plant’s energy needs. When EBMUD began looking for a way to upgrade the failing brick refractory lining in their emergency digester gas flare structure, they turned to TFL, Incorporated. TFL developed an innovative precast refractory shape system that would offer dependable performance, structural integrity, and ease of installation. The unique system of floating wall panels is held in place using tongue-and-groove tieback shapes, bolted to the existing concrete structure. The individual panels in the system can absorb thermal and mechanical stresses independently. Given the location, potential seismic loading was also considered in the development of the system. The existing flare containment building is an oval-shaped concrete structure, with inside dimensions of 17’ wide by 47’ long. The refractory lined upper section of the structure is just over 21’ tall. The refractory wall thickness is 4-1/2”. A 2” air gap between the refractory wall and the concrete wall allows for airflow and ventilation. The refractory wall system consists of 514 precast shapes of four basic types, all manufactured in TFL’s Houston, Texas facility. The shapes were cast using Plicast HyMOR 3000 KK, a low-cement castable refractory manufactured by Plibrico Company. Stainless steel needle fibers were used for added reinforcement and to improve resistance to thermal shock and cracking. The shapes were fired to 1250o F prior to shipment, optimizing strengths and allowing the flare structure to be immediately operational, without the need for a field dry out of the refractory. NTK Construction, Inc. of San Francisco, California, was the installation contractor for EBMUD.

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