CALDERYS Expertise in Waste incineration


CALDERYS Expertise in Waste incineration

With over 100 years of experience in the Waste Incineration industry, Calderys has earned a global reputation as a reference supplier of unsurpassed knowledge and dedication. We proudly provide turnkey projects to the top 10 engineering companies worldwide. Our pioneering implementation of innovative monolithic products and design solutions safeguard profitability thanks to better energy transfer, reduced maintenance downtime, and longer repair cycles. Our worldwide presence and local experience allow us to offer the most suitable and cost effective technical solutions that will contribute to our customer's productivity and efficiency. For our customers in the Waste to Energy industry, we focus our efforts on the following concerns:

  • Safety, reliability, and productivity of equipment
  • Heat transfer
  • Protection of the tube-wall against corrosion
  • Strict environmental regulations to burn NOx.

Products & Applications

We offer a full range of products and solutions based on our dedicated monolithic refractory range. The different types of units in the Waste to Energy industry are:

Tank melting and
holding furnaces

These units often suffer from stresses such as severe corrosion and abrasion,reladted to temperature, presence of particulate matter in the gas stream, and the chemical composition of the waste. Calderys has developed a dedicated range meeting the demands of these wear conditions. Our low cement castables have a high mechanical strength and present high abrasion resistance. Specific additives in low cement castables, such as SiC (a mix of Sic and Zircon Silicate) bring alkali resistance to the castables. We have developed a new product designed to protect tube walls and collectors, CALDE™ PATCH PT 90 HR, which is a cold setting hydraulic-phosphate castable with a very high abrasion resistance.

We have recently developed a family of low cement castables, but without additives, with an alkali resistant matrix that can be used where SIC oxydises (high temperatures, liquid slag,etc…). They have been installed and have shown excellent results.

The refractory lining must withstand stress and also insure heat transfer to the tube-walls. Due to regulations, the conversion of NOx gasses into N2 is of primary importance. SiC additions in low cement castables allow the modification of heat transfer, which can be adjusted later to the OEM requirements. Our CALDE™ range offers products with additions of SiC from 10% to 90%. When high temperature is needed, for example in the first chamber where NOx must be transformed into N2, low SiC addition and/or products with an alkali resistant matrix preferred.

The waste incineration industry also requires short stoppages and fast installations. Calderys was the first to bring to the market two dedicated product ranges adapted to the new gunning technologies CALDE™ SPRAYCAST for shotcreeting and CALDE™ GUN L for low porosity dense gunning of low cement products with high abrasion and alkali resistance. Service life of these gunning mixes is similar to cast-vibrated corresponding products. Calderys has also recently developed a specific range of Quick Dry monolithic LCC refractory products which reduces the dry-out time by 50%.

Installation, Commissioning and Turnkey Maintenance

Well aware of refractory and Waste incineration process knowledge, our experimented supervisors and installers provide expert technical guidance and the best suited installation equipment to ensure the refractory performance during service.

Calderys employs dedicated skilled staff and the latest advances in refractory installation equipment. This can be applied to small, large, and turnkey projects alike depending on the requirement. Alternatively, we can support the customer's own staff by supervision, project management, equipment, and also direct installation training.
Our aim is to ensure the best installation and dry-out of the refractory so that the customer gets maximum performance.

Once in service, the refractory may require specific maintenance which again can be supplied depending on the customer needs. In some cases, and depending on the situation, services may be available 24 hours per day, 7 days per week, ensuring minimum downtime for the customer—especially for unplanned stoppage.

Turnkey new Projects

Our engineering teams, dedicated to the Waste incineration industry, help customers meet a wide range of needs such as: refractory lining design, heat transfer calculation, quotation, planning, installation, and dry-out.

Calderys is often invited to take part in the development of technical solutions to cover specific needs. Familiar with the specific processes of each type of incinerator from grate incinerators to circulating fluidized bed, we are able to engineer a refractory solution, provide project management services, and advise on the proper installation techniques for new projects. We have an excellent reputation for providing reliable solutions and thus have created many long-lasting relationships with our customers, end users and engineering companies. Our strategic partnership with the customers ensures that we develop market-oriented solutions. Due to our 100 years of experience in the Waste incineration industry, Calderys has the capability to become the integrated refractory partner and to meet all the needs from solution design to implementation.

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Gunning | Low Porosity

Case studies 01

The Calderys innovative Low Porosity Dense Gunning installation technology can improve jobsite installation efficiency by approximately 50 percent.

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Quick Dry | Product Range

Case studies 01

The Calderys innovative Quick Drying No Cement Castables provide excellent mechanical strength, quick drying and fast heating capabilities, with no curing time, leading to savings in time and energy.

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Alkali Corrosion | Calderys Solutions

Case studies 01

Calderys designs products to increase Alkali resistance. Learn why some castables are enriched with special additives and how others can combat corrosion with a special matrix design.

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Abrasion | Calderys Solutions

Case studies 01

Calderys designs products to increase Alkali resistance. Learn why some castables are enriched with special additives and how others can combat corrosion with a special matrix design.

Read more

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