Eight continuous feed rotary tube furnaces were exported to Australia.

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Eight continuous feed rotary tube furnaces were exported to Australia.

1. Client Introduction

Client Name: An Australian New Energy Materials Company (A Leading Global Manufacturer of Lithium-ion Battery Cathode Materials)

Industry: New Energy Battery Materials, Lithium-ion Battery Cathode Precursors and Cathode Materials

Core Needs: To achieve large-scale, continuous drying and calcination of lithium-ion battery cathode material (such as NCM, NCA, LFP) precursors, requiring equipment with continuous feed and discharge, high capacity, excellent temperature uniformity, and process stability.

Headquartered in Perth, Australia, this client, leveraging Western Australia's abundant lithium resources, has become a major global supplier of battery-grade lithium chemicals. In recent years, with the explosive growth of the electric vehicle and energy storage markets, the client has expanded its cathode material precursor production line, urgently needing a batch of high-temperature rotary tube furnaces capable of continuous production to replace traditional intermittent roller kilns or pusher kilns, increasing capacity and reducing unit energy consumption. After a global technical evaluation, the client ultimately selected our tilting rotary tube furnaces, purchasing eight units at once to increase production for its newly built 10,000-ton-level cathode material precursor drying/calcination production line.

2. Equipment Introduction

Equipment Name: Continuous Feeding and Discharging Inclined Rotary Tube Furnace (Continuous Rotary Furnace)
Product Model: PT-T1400
Operating Temperature: ≤1100℃ (Common Operating Temperature: 600～1000℃)
Tube Material: High-purity quartz tube/310S stainless steel/corundum tube (optional depending on material). This case uses 310S heat-resistant stainless steel tube with polished inner wall.
Tube Specifications: Diameter φ200～400mm, Heating Zone Length 2000～4000mm (customized according to production capacity)
Feeding and Discharging Method: Continuous – Raw materials are automatically or manually added from the high end (feeding end). Relying on the inclination and rotation of the furnace tube, the material undergoes a "rolling + axial movement" compound motion inside the tube, and is continuously discharged from the low end (discharge end), achieving fully automatic continuous production.
Rotation and Inclination Angle: Speed 0～10 Adjustable rpm, adjustable tilt angle from 0 to 8°, allowing precise control of material residence time.
Heating method: Multi-segment resistance heating (including molybdenum resistance wire/Fe-Cr-Al alloy wire), furnace chamber uses lightweight ceramic fiber, resulting in rapid heating and energy saving.
Temperature zone configuration: 3-6 independent temperature zones, each with independent temperature control, and adjustable temperature gradients (e.g., preheating, high-temperature, cooling).
Temperature control system: PID+SCR programmable temperature control, with a control accuracy of ±1℃, and real-time temperature curve recording.
Atmosphere control: Sealed inlet and outlet device, allowing the introduction of N₂, Ar, air, or reactive gases to achieve inert/oxidizing/reducing atmosphere treatment.
Automation integration: PLC+touchscreen centralized control, with optional automatic feeder, weighing system, and discharge cooling conveyor line.
Safety protection: Over-temperature alarm, furnace tube pressure monitoring, rotational overload protection, and electrical safety interlock.

This series of equipment is specifically designed for continuous heat treatment of powdery and granular materials, and is widely used in battery materials (positive electrode precursors, negative electrode graphite), mineral roasting, catalyst activation, and metal powder reduction. Compared to traditional batch furnaces, the continuous feed-discharge design eliminates heating and cooling waiting time, significantly increasing production capacity and reducing energy consumption.

3. Equipment Application
Specific Process: Continuous drying and low-temperature calcination of lithium-ion battery cathode material precursors (such as NCM hydroxide, LFP precursors)
Processed Materials:

High-nickel NCM precursor (NiₓCoᵧMn₁₋ₓ₋ᵧ(OH)₂);
NCA precursor;
Lithium iron phosphate (LFP) precursor.

Process Objective: To remove free water and some crystal water from the precursors, while simultaneously performing pre-oxidation or pre-carbonization to provide stable and uniform intermediate products for subsequent high-temperature sintering processes.

Application Results:

Capacity Increase: Compared to the previously used intermittent box furnace, single-line capacity increased by approximately 3 times, while energy consumption per unit product significantly decreased.

Product Consistency: Continuous feeding and discharging eliminated batch-to-batch variations, greatly reducing the fluctuation range of product moisture content.

Process Stability: Multi-temperature gradient control ensures a uniform thermal process for materials within the furnace tubes, preventing localized over- or under-burning.

Automation Level: Enables unattended continuous operation, requiring only periodic inspections, significantly reducing labor costs.

4. Customer Feedback

"This positive electrode precursor heat treatment production line, consisting of eight continuous rotary tube furnaces, has been very smooth from installation and commissioning to full-load production. What we are most satisfied with is the truly continuous feeding and discharging—materials are added from the feed hopper, pass through the heating zone, and automatically discharge from the outlet, requiring no manual intervention. Each furnace's temperature zone is independently controlled, allowing us to freely adjust the temperature curve according to material characteristics, resulting in excellent consistency in product moisture and particle size distribution. In the year since its launch, the average uptime has reached 92%, with minimal maintenance. This solution has helped us achieve a 10,000-ton capacity with a low investment cost, and energy consumption is lower than the design value. We have adopted this type of continuous rotary tube furnace as the standard configuration for our new production lines."

— Operations Director, an Australian New Energy Materials Company

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Eight continuous feed rotary tube furnaces were exported to Australia.

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