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Product Description
Building on our extensive 14-year metallurgical engineering background, we design and manufacture the industry's most robust Iron Ore Rotary Dryer Systems. Operating out of our 48,000-square-meter source production facility in Zhengzhou, China, we specialize in large-scale, high-capacity drying lines specifically engineered for heavy mineral concentrates.
Unlike copper concentrate, which is highly temperature-sensitive due to sulfide oxidation risks, iron ore processing (handling hematite, magnetite, or limonite) presents a completely different engineering challenge: extreme bulk density, high abrasive wear, and massive moisture retention in the fines. Wet iron ore concentrate or beneficiated cake typically arrives with sticky, clay-rich moisture levels of 8% to 15%. If not properly managed, this creates a high risk of material clogging, clumping, and rapid mechanical wear.
Our heavy-duty rotary drying systems are engineered to handle single-line capacities from 10 to over 100 tons per hour (TPH). They reliably drive moisture down to less than 1.0% to 2.0% in a single pass. This ensures your final product is optimized for pelletizing plants, sinter strands, blast furnace feeding, or global maritime shipping without the risk of cargo liquefaction. By buying directly from our source factory, you bypass intermediate trading markups, cutting your capital equipment expenditure by 20% to 35% while securing direct access to our certified engineering support team.
Functional Principle
The iron ore drying line utilizes a highly optimized co-current or counter-current thermal matrix engineered around handling massive bulk densities (>2.5 t/m3).
1. High-Torque Mechanical Feed Section
Wet iron ore is transferred via heavy-duty, reinforced vibrating feeders or high-torque belt conveyors into an oversized, steep-chute feed inlet. Because wet iron ore fines are highly sticky and prone to clogging, the inlet area is equipped with automated mechanical anti-blocking scrapers and a high-temperature alloy liner to ensure continuous, uninterrupted material entry.
2. Dispersing and Shattering Zone
Upon entering the rotating drum, the dense, wet iron ore immediately encounters a specialized section of shattering and agglomerate-breaking flights. These flights actively break down large, sticky mud cakes into uniform, smaller pieces. The drum itself operates at a variable-frequency speed of 1.5 to 6 rpm and sits at a precise 2° to 4° slope, using gravity and continuous rotation to advance the heavy ore load forward.
3. The High-Density "Material Curtain"
As the ore moves into the main drying zone, it encounters our proprietary L-shaped and comb-style lifting flights. These cast-alloy flights lift the heavy iron ore grains and cascade them uniformly across the entire internal diameter of the drum. This creates a dense, uniform "material curtain." High-velocity hot air (ranging from 300°C to 600°C, depending on the ore structure) passes directly through this curtain, creating rapid heat and mass transfer that flash-evaporates surface and capillary moisture instantly.
4. Continuous Exhaust & Fines Scavenging
The moisture-rich exhaust gas is continuously evacuated under a controlled micro-negative pressure environment. It passes through a high-efficiency multi-cyclone separator that captures more than 95% of airborne ore dust, followed by an oversized pulse-jet baghouse or a heavy-duty industrial wet scrubber. This dual-stage filtration keeps final particulate stack emissions below 20 mg/m³, fully satisfying international environmental mandates. All recovered fine dust is automatically recombined with the dried product stream via a closed screw conveyor loop to eliminate material loss.
Core System Features
1. Extreme Wear Resistance & Structural Armor
Iron ore is highly abrasive. To combat severe internal scouring and mechanical stress caused by high bulk densities, our dryers are built with an uncompromising defense matrix:
Thickened Drum Shell: Fabricated using premium Q345R alloy boiler plate, featuring thicknesses 20% to 30% greater than standard industrial dryers.
Mn13 Manganese Steel Liners: The entire impact and drying zone can be fitted with replaceable high-manganese steel armor plate castings.
ZGMn13-4 Alloy Flights: Lifting flights are cast from specialized wear-resistant chromium-manganese alloys to ensure an operational lifespan exceeding 12,000 hours.
Forged Steel Riding Rings & Trunnions: The main riding rings (tyres) and support rollers are forged from solid 42CrMo or 35CrMo steel, subjected to rigorous through-hardening and non-destructive ultrasonic testing (NDT) to eliminate the risk of structural cracking under heavy loads.
2. High Thermal Output with Multi-Fuel Adaptability
Drying heavy iron ore requires a substantial and stable thermal input. Our systems feature high-efficiency combustion chambers compatible with a wide range of cost-effective fuels:
Pulverized Coal Burners (including low-grade coal/lignite systems)
Heavy Oil / Bunker C / Diesel Burners
Natural Gas / LNG / Coke Oven Gas (COG)
Biomass / Waste Heat Gas Recovery Loops
3. Advanced Anti-Caking & Chain-Scraper Matrix
To completely solve the industry-wide problem of sticky iron ore fines adhering to the drum walls (which forms a hard insulating crust and lowers drying efficiency), the internal structure features an automated, self-cleaning heavy-chain scraper matrix. As the drum rotates, these suspended heat-resistant alloy chains continuously sweep the inner walls, completely eliminating material buildup and maintaining maximum heat transfer efficiency.
4. Smart PLC Process Automation
The entire drying line is managed via a centralized Siemens S7-1200 or S7-1500 PLC architecture paired with an industrial touchscreen HMI. The control system features true one-touch multi-language toggles (English, Spanish, Russian, French, Arabic). It automatically modulates the burner's fuel delivery rate and the drum's RPM based on real-time fluctuations in feed moisture and discharge temperature, ensuring a highly consistent final product while cutting fuel waste.
Global Turnkey Sourcing & Project Support
As an authentic Chinese source manufacturer, we manage the entire project lifecycle for international mines, ports, and steelworks:
Custom Sizing & Engineering: We model the exact drum length, diameter, and flight configuration based on your specific ore type (magnetite vs. sticky limonite), initial moisture content, and target capacity.
Export Compliance & Documentation: All machinery is fully certified under CE (European Safety Standard) and ISO9001:2015. We provide a complete documentation package—including certified drawings, bills of materials, certificates of origin, and custom clearance paperwork.
Modular Delivery: The entire plant is pre-engineered into modular blocks and securely packed into heavy-duty sea containers or flat racks for safe, efficient international transport.
On-Site Commissioning & Global After-Sales: We dispatch experienced field engineers directly to your site to oversee mechanical assembly, electrical integration, and crew training, ensuring your line is fully operational within 10 to 14 days of arrival.
Request a Technical Engineering Layout Within 24 HoursTo receive a detailed processing scheme and direct factory price quote, please message our engineering desk with your ore type, initial moisture (%), target final moisture (%), target TPH capacity, and preferred site fuel type. Contact us today to arrange a virtual factory inspection or an on-site visit to our manufacturing facility!
Technical Specifications
| Product Specs (m) | Capacity (T/H) | Main Motor Power (kW) | Main Motor Model | Main Gearbox Model | Ratio |
| φ1.2×10m | 2.5 | 7.5 | Y160M-R3 | ZL50-16-1 | - |
| φ1.5×12m | 3.3 - 4.9 | 10 | Y160L-6B3 | JZQ500-III-2F | - |
| φ1.5×15m | 4 - 6 | 18.5 | Y200L-6 | JZQ500-III-2F | - |
| φ1.8×12m | 4 - 6 | 11 | Y200L-6 | ZQ50-16II-2 | 16.46 |
| φ2.2×12m | 7 - 12 | 18.5 | Y160L-6 | JZQ650-III | 31.5 |
| φ2.2×14m | 7 - 12 | 18.5 | Y160L-6 | JZQ750-III | 31.5 |
| φ2.2×16m | 12 | 30 | Y225M-6 | JZQ750-III | 31.5 |
| φ2.4×14m | 12 | 30 | Y250M-6 | JZQ750-III | 31.5 |
| φ2.4×18m | 10 - 13 | 37 | Y250M-6 | ZL85-13-1 | 27.16 |
| φ2.4×20m | 10 - 14 | 37 | Y250M-6 | ZL85-13-1 | 27.16 |
| φ3×20m | 25 | 55 | Y250M-4 | ZL100-16-1 | 41.52 |
| φ3×25m | 32 - 36 | 75 | YR280M-4 | ZL100-16-1 | 41.52 |
8.
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