Description

SH Scientific’s 1200°C Batch-Type Rotary Tube Furnace

Engineered for Highly Dispersible Materials like Nanotubes and Fine Powders

Researchers working with ultra-fine, highly dispersible materials—such as nanotubes and specialty powders—often face persistent challenges: sample loss during heating, uneven mixing, and complex steps for retrieving processed materials. In response, SH Scientific designed a batch-type rotary tube furnace that addresses these issues head-on—not by chasing mass-market appeal, but by solving the real problems researchers face in the lab.

At the core of this furnace is a tapered-end stainless steel tube designed to optimize the handling of fine, dispersible materials. Its tapered geometry not only directs heat distribution to the hot zone but also makes it easier to discharge every last bit of the sample—especially vital for materials that naturally resist flowing or separating.

Quick-Open End Cap and Effortless Tube Removal

Every aspect of this batch-type rotary furnace is designed to reduce hassle and enhance precision. The batch-type layout, paired with a quick-open end cap and fully removable tube, makes loading and unloading remarkably straightforward. Unlike outdated tilting rotary furnaces that require high-angle adjustments for discharge, SH Scientific’s design allows the stainless steel tube to slide out effortlessly. Once removed, it can be gently tapped to release any remaining samples.

This seemingly simple function is a game-changer for scientists handling sticky, delicate materials—because we’ve been there too, and we understand what makes your work smoother.

Integrated Barrier Options (Stainless Steel & Quartz) for High-Dispersibility Materials

One of the most frustrating issues with rotary furnaces is the uncontrolled spread of fine particles throughout the chamber. Our optional internal barrier system, available for both stainless steel and quartz tubes, was developed based on real usability studies and feedback from labs around the world—not textbook theory. The specific diameter and placement of the barrier holes (1 mm for stainless steel and 0.5 mm for quartz) are the result of detailed trial-and-error to ensure that dispersible materials remain in the hot zone. The stainless steel tube includes a fixed barrier on one side, while the quartz tube features a fixed barrier on one end and a removable barrier on the other—both options available to suit different research needs. These thoughtful features are rarely found in products from business-oriented manufacturers. SH Scientific takes pride in creating solutions born from careful observation of actual research environments, with the goal of offering scientists a more refined and practical working experience.

Internal Baffles for Consistent Results

Fine materials like nanotubes tend to clump, resist mixing, and behave unpredictably during heat treatment. To overcome this, we integrated specially shaped internal baffles within the tube. These baffles actively promote uniform tumbling and controlled motion of the material, ensuring consistent exposure to heat and enhanced mixing that would be impossible with rotation alone. Together with the barriers, they help deliver dependable, reproducible results that matter in high-precision research.

Optional Ultra-Pure Water and Steamer Integration

Many labs conducting delicate research depend on ultra-pure water to generate steam and maintain a contaminant-free environment. However, introducing steam at high temperatures can also facilitate partial thermolysis of H₂O into O₂ and H₂, creating a controlled release of reactive oxygen and hydrogen species. This process can significantly enhance specific chemical reactions by accelerating oxidation or reduction steps. By carefully managing steam flow, researchers can optimize the partial pressures of O₂ and H₂, promoting faster, more precise chemical transformations.

This furnace has been fully tested for maximum performance when connected to a compatible water filtration system and steamer—enabling purging or steam-filling of the chamber as needed. Such integration supports specialized applications in material science, semiconductor processes, and any research requiring high-purity conditions or reactive steam-based environments for improved reaction kinetics and O₂/H₂ separation.

Simplicity That Addresses Real Research Needs

By eliminating unnecessary mechanical complexity and focusing solely on features that genuinely benefit laboratory work, SH Scientific delivers a rotary tube furnace that is both practical and reliable. Every detail, from the slow rotation speed to the removable stainless-steel tube and optional barriers, stems from direct feedback gathered from modern labs. The result is a well-rounded solution that meets the demands of researchers handling sensitive, high-dispersibility materials—providing stable heating and straightforward operation without the complications of traditional tilt designs.

If your lab requires adjustable tilt angles for specialized processes, SH Scientific continues to offer its Rotary Kiln product line, featuring precise angle control. By tailoring each furnace to the actual demands of your research, we deliver cost-effective, user-friendly solutions without compromising on performance.

Key Features That Drive Unmatched Performance in SH Scientific’s Rotary Tube Furnace

• Quick-Open End Cap and Effortless Tube Removal
  Designed with researchers in mind, this furnace takes the hassle out of handling. Its batch-style setup, combined with a quick-release end cap and easily removable stainless steel tube, streamlines both loading and sample retrieval—no awkward tilting or complex maneuvering needed.
• Integrated Material Containment Barriers
  Developed through real-world usability testing—not textbook theory—these optional quartz and stainless-steel barriers keep highly dispersible materials securely in the hot zone. Hole diameters were fine-tuned to ensure optimal retention and airflow, offering a level of refinement rarely seen in commercial-grade furnaces.
• Internal Baffles for Mixing Consistency
  Strategically placed baffles inside the tube promote uniform mixing and tumbling—an essential feature when processing fine powders prone to clumping or bonding. Together with the barriers, they ensure reliable, reproducible results batch after batch.
• Steam Generator Port (Optional)
  Allows for the controlled injection of separated hydrogen and oxygen gases to drive targeted chemical reactions during batch treatment.
• Tapered-End Stainless Steel & Quartz Tube
  Specially designed for ultra-fine materials like nanotubes, the tapered geometry concentrates heat exposure and allows for easy, near-complete discharge of samples with minimal residue.
• Batch Process Design
  Purpose-built for controlled, repeatable thermal treatments in small-to-medium quantities—ideal for R&D and production environments handling sensitive, dispersible materials.
• Precision Heat Treatment
  Even temperature distribution is maintained across the sample zone through careful control of rotation speed and heat flow, enhanced by the tapered design and containment features.
• Vacuum, Controlled Atmosphere, and Pressurization Capability
  Fully compatible with inert, reactive, or vacuum environments to support diverse thermal processing needs.
• Adjustable Tube Rotation (2–30 rpm)
  Offers flexible control over mixing and heat exposure—tailored to material properties and batch requirements.

Technical Specifications

• Maximum Temperature: 1200 °C
  Recommended continuous operation at 1000 °C or below
• Tube Type:
  • Tapered-end stainless steel (SS310S)
  • Optional: Tapered quartz tube
• Tube Diameter & Length:
  • Hot zone
    114.3 Φ x 3 T x 220 mm (STS310S)
    120 Φ x 3 T x 220 mm (Quartz)
  • Reduced hot zone
    114.3 Φ x 3 T => 60 Φ x 2.8 T x 40 mm (STS310S)
    120 Φ x 3 T => 60 Φ x 2.5 T x 40 mm (Quartz)
  • Cool zone
    60 Φ x 2.8 T x 200 mm (STS310S)
    60 Φ x 2.5 T x 200 mm (Quartz)
• Rotation Speed: Adjustable from 2 to 30 rpm
• Steam Inlet Port: Optional
• Gas Ports: 1/4″ inert gas inlet/outlet ports
• Housing: Double-layer design Surface stays cool—29~30 °C at 800 °C internal temperature
• Programmable Controller: Built-in programmable temperature controller
  • 2 patterns
  • 15 segments per pattern (30 total segments)
• Vacuum Sealing & Gas Ports: Perfect vacuum sealing with inert gas inlets/outlets and outgassing features
• Safety: Low surface temperature housing (29–30 °C at 800 °C), built-in over-temperature protection, and easy tube replacement
• Optional Add-ons:
  • Tapered quartz tube
  • Mass flow controller
  • Back pressure regulator
  • Barrier System