Harper’s patented vertical furnace systems are our latest thermal processing innovation for powders and granular materials. Processing at temperatures up to 3000°C, Harper's vertical kilns are designed to maximize product uniformity and reaction time, provide better heat and mass exchange, and improve efficiency.

Learn more about processing powders in a vertical kiln here. (read more)

Harper's mesh belt conveyor furnaces and kilns are designed for the continuous processing of parts as well as advanced materials such as granular, powder, or particulate aggregates in high purity and specialty atmosphere environments at temperatures up to 2000°C. (read more)

Harper pioneered the Microline® concept based on flexibility and versatility to change and modify equipment parameters for the needs of customers in Carbon Fiber research for experimentation with traditional or emerging precursors, process tweaking and development of samples for up to 1.5 tons per year. Our system accommodates line speeds ranging from 0.1 m/min to over 1 m/min and to... (read more)

When you’ve reached production scale, Harper’s 3M and 4M Carbon Fiber lines are the ideal choice, focused on process effectiveness, product quality, and operational optimization. Born from our years of experience in helping customers from around the world grow from fractions of kilograms per hour to tons per year, Harper’s unique expertise with Carbon Fiber production e... (read more)

Harper International, a world leader in thermal processing solutions for advanced materials, announces the launch of its Lab-Scale Rotary Furnace. The Lab-Scale Rotary Furnace allows producers of advanced materials to optimize their process parameters on a small scale to ensure capability and quality requirements are achieved prior to investment in production-scale thermal process equipm... (read more)

Buffalo, NY - Harper International, world leader in thermal processing solutions for advanced materials, has been awarded a contract to engineer and manufacture a Scientific Line for the production of Bitumen Pitch Carbon to be installed at Alberta Innovates, located in Edmonton, Alberta, Canada. The facility will be operated by InnoTech Alberta, a wholly owned subsidiary of Alber... (read more)

Harper Furnace Technology Enables High Performance Silicon Anodes

Buffalo, NY – High temperature thermal process solutions developed by Harper International Corporation are enabling production at several silicon anode battery material companies in 2024. Silicon anode material offers significantly higher specific capacity than traditional graphite anode materials enabling hig... (read more)

Buffalo, NY – A custom engineered, 24-inch rotary tube furnace built by Harper International for Heirloom Carbon Technologies (San Francisco, CA) is enabling America’s first commercial Direct Air Capture (DAC) facility in California’s Central Valley. Heirloom’s DAC facility uses calcium carbonate to remove already-emitted CO2 from the atmosphere. The furnace uses... (read more)

Harper International Receives Order for Cementitious Materials Research
Buffalo, NY - Harper International, world leader in thermal processing solutions for advanced materials, has been awarded a contract to engineer and manufacture a Rotary Tube Furnace for Cementitious Materials Research to be installed at University of Kentucky’s Center for Applied Energy Rese... (read more)

Materials for energy generation applications are becoming more critical as society looks towards alternative means of power beyond fossil fuel-based methods. Harper has been a critical partner for nuclear fuel processing furnace and kilns for decades to companies developing new energy generation technologies and optimizing their existing operations.

Harper has become the world... (read more)

Like our customers, Harper is perpetually on the cutting edge of our industry. Both academic and industrial organizations trust Harper International for graphene production equipment, including our high temperature kilns, furnaces, and oven, for developing advanced materials like Graphene and other advanced carbon materials in controlled and specialty atmospheric environments and at temp... (read more)

Even our smallest scientific scale Carbon Fiber research and development line emulates real world production across all equipment, yet delivers the precision and flexibility needed to aid research efforts and future scale up. Requiring only one person to operate, this inventive system is designed to handle very few filaments – from 10 to 20 filaments up to 6k, and operates at about... (read more)

Harper’s pusher furnaces and tunnel kilns are ideal for processes requiring precise control of temperature and atmosphere, for those with longer residence times that require exact control of the heat up rate of the product (temperature profile), and those with a lower gas/solid reaction. Our focus is on systems that offer the greatest operating life, lowest operating cost, and high... (read more)

Every Harper rotary tube furnace is designed for the customer's unique specifications. We bring innovative solutions to designs for continuous processing of advanced materials such as granular, powder, or particulate aggregates in high purity and specialty atmosphere environments at temperatures up to 3000°C, including gas, electric and microwave heated systems. (read more)

Interested in the pros and cons of different high temperature industrial furnace technologies? Harper is here to help guide you through identifying the ideal system for your unique process considerations, material characteristics, manufacturing parameters and facility constraints with our interactive chart. (read more)

Buffalo, NY - Harper International, world leader in thermal processing solutions for advanced materials, is pleased to announce they have been chosen by Westwater Resources, Inc. to conduct engineering scale-up and front-end engineering design for production scale thermal purification as part of the Definitive Feasibility Study (DFS) on the Coosa Graphite Project located in Alabama.

Harper offers clients access to a number of research and piloting facilities for thermal processing to help develop the most efficient and effective regime to meet their goal. We understand the importance of R&D necessary for the scale up of advanced materials. Using our depth and breadth of experience in thermal process programs, we partner with our customers in our Ignite® Prog... (read more)