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Product Description
We are a specialized copper concentrate drying equipment manufacturer based in Zhengzhou, China, with over 16 years of dedicated experience in non-ferrous metal concentrate processing. Our factory spans 52,000 square meters and houses a complete production line including CNC plasma cutting stations, robotic welding cells, heavy-duty lathes, dynamic balancing rigs, and ultrasonic flaw detectors. Annual output exceeds 280 sets. As a true manufacturer — not a trading company — we sell directly to global mining operators, smelting groups, and EPC contractors, eliminating every middleman layer. Our ex-factory pricing undercuts market traders by 20% to 35%, with faster lead times and tighter quality control.
This 20TPH copper concentrate rotary dryer plant is engineered specifically for medium-scale copper mining operations producing 20 tonnes per hour of dried concentrate. It handles wet copper concentrate with 10% to 18% moisture content and delivers a final product at 0.3% to 1.0% moisture — precisely what flash smelting, reverberatory furnaces, and hydrometallurgical leaching circuits demand. The drum is fabricated from Q245R boiler-grade steel, with the interior lined in Mn13 high-manganese cast steel and lift flights forged from ZGMn13-4 alloy. Critical wear zones receive 95% alumina ceramic tile overlays, extending service life beyond 10,000 operating hours. The burner system accepts natural gas, diesel, LPG, heavy oil, steam, or thermal oil — whatever fuel makes economic sense at your mine site. Control is managed by a Siemens S7-1200 PLC driving a 10-inch Weinview HMI touchscreen, with English, Russian, French, Spanish, and Arabic language toggles built in.
We hold ISO9001, ISO14000, and CE certifications. Our equipment ships to more than 45 countries across Africa (Zambia, DRC, Namibia), Central Asia (Kazakhstan, Uzbekistan), Southeast Asia (Indonesia, Philippines), South America (Chile, Peru), and Oceania (Papua New Guinea). We have served over 1,200 overseas clients and maintain a dedicated after-sales network across four continents.
Working Principle
Wet copper concentrate at 10%–18% moisture enters the inclined rotary drum through a sealed feed inlet — typically a screw feeder or star feeder sized for fine concentrate particles. The drum sits at a 2°–4° tilt and rotates at 1.5–6 RPM, allowing gravity and rotation to move material steadily from the feed end toward the discharge end.
Inside the drum, our proprietary low-temperature lift flights — specifically designed for sulfide concentrates — scoop the material and cascade it through a curtain of hot air. Unlike conventional flights that blast material with high-temperature gas, our flights operate in a controlled 150°C–400°C range, carefully calibrated to keep copper sulfides below their oxidation threshold. This is the critical differentiator: copper concentrate contains chalcopyrite (CuFeS₂), bornite (Cu₅FeS₄), and chalcocite (Cu₂S) — all of which begin to oxidize and lose copper value above 380°C. Our intelligent temperature profiling system uses multiple thermocouples along the drum length to enforce a staged heat curve, ensuring no zone exceeds the safe limit.
Hot air enters from the discharge end, creating a counter-current flow where the hottest gas meets the driest material and the coolest gas meets the wettest feed. This counter-current arrangement achieves 70%–76% thermal efficiency — meaning for every tonne of water evaporated, you burn only 65–90 cubic meters of natural gas. At 20TPH capacity with 14% inlet moisture and 0.7% target moisture, the plant evaporates roughly 2.6 tonnes of water per hour, consuming approximately 170–235 cubic meters of gas per hour — a running cost that pays for itself within 5 to 7 months.
Moisture-laden exhaust gas exits the feed end into a cyclone separator for primary dust removal, then a pulse-jet baghouse for secondary filtration. Copper concentrate dust is not just waste — it contains recoverable copper. Our dual-stage dust recovery system captures 99.5%+ of entrained particles, routing them back to the finished product via a screw conveyor. Stack emissions stay below 15 mg/m³. An optional SO₂ scrubber can be added to treat sulfur-bearing off-gas, bringing emissions under 100 mg/m³ — well within China GB16297 and EU Industrial Emissions Directive limits.
Dried concentrate exits through an airtight rotary valve at the discharge end. An optional cooling drum can follow to bring product temperature down before bagging or feeding to the smelter. The entire process runs under slight negative pressure, preventing any copper-bearing dust from escaping into the plant environment.
Product Features
Low-Temperature Sulfide-Safe Drying
The single biggest risk in copper concentrate drying is not energy cost — it is copper loss through sulfide oxidation. Traditional dryers run at 500°C–700°C, which converts chalcopyrite to oxide, dropping copper grade by 2%–5% and destroying downstream leach recovery. Our plant caps all zones at 380°C maximum, enforced by real-time thermocouple monitoring and automated staged temperature control. This is not a marketing claim — it is a metallurgical necessity we have solved through 16 years of non-ferrous concentrate drying experience.
20TPH Precision-Matched Capacity
This plant is purpose-built for the 20 tonnes-per-hour throughput band — the sweet spot for medium-scale copper mines and regional concentrators. The drum diameter, length, rotation speed, flight configuration, and burner output are all optimized for this exact capacity. You do not pay for oversized equipment you do not need, nor do you sacrifice performance by under-specifying.
Sulfur-Bearing Off-Gas Treatment Ready
Copper concentrate is the only common mineral concentrate that releases SO₂ during drying — because of its iron sulfide content (pyrite, FeS₂). Gold concentrate, silver concentrate, lead-zinc concentrate — none of them have this problem. Our plant comes standard with a two-stage dust collector and offers an optional wet or dry SO₂ scrubber as a bolt-on module. This means you can meet environmental compliance in Chile, Peru, Zambia, or any jurisdiction with strict sulfur emission limits — right out of the box.
99.5%+ Copper Recovery in Dust System
Every gram of copper concentrate that escapes as stack dust is money lost. At 20TPH with 14% inlet moisture, a conventional dryer can lose 10–50 grams of copper per hour in dust. Our micro-negative pressure enclosure plus cyclone-baghouse system recovers 99.5%+ of all entrained particles. At current copper prices, this alone saves tens of thousands of dollars per year.
Six-Fuel Flexibility for Global Deployment
Whether your mine runs on West African diesel, Central Asian natural gas, South American LPG, or Southeast Asian heavy oil — our burner system adapts. The PLC auto-adjusts combustion parameters for each fuel type, so operators simply select the fuel and the plant handles the rest.
Universal Voltage Compatibility
The electrical package accepts 220V, 380V, 415V, 440V, and 480V at both 50Hz and 60Hz. No transformer needed. Plug in and run — whether you are in Lusaka, Almaty, Jakarta, or Santiago.
Containerized Shipping — 2 × 40HQ
The entire plant breaks down into six modules: feed section, drying section, discharge section, burner section, dust collection section, and control section. Each module fits into a standard wooden crate. The complete plant loads into two 40-foot high-cube containers. Ocean freight is economical, customs clearance is straightforward, and on-site assembly takes just 7–10 days with a small crew.
72-Hour Factory Burn-In Test
Before any plant leaves our gate, it runs continuously under full load for no fewer than 72 hours. We test drum balance, flight alignment, burner stability, PLC logic, dust collector pulse cycles, and temperature control accuracy — all documented in a test report we hand to you with the machine.
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 |
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