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2.Low downtime rate
3.Consistent hourly throughput
4.High daily output
5.Fuel-flexible burner
6.Auto ignition system
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Product Description
We are a specialized industrial copper concentrate dryer manufacturer headquartered 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, six-axis robotic welding cells, heavy-duty lathes, dynamic balancing rigs, ultrasonic flaw detectors, and three-coordinate measuring instruments. Annual output exceeds 280 sets. As a true manufacturer — not a trading company — we sell directly to global mining operators, copper smelters, trading houses, 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 industrial copper concentrate dryer is engineered specifically for medium-to-large-scale copper mining and smelting operations producing 5 to 80 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 1.2% 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. Unlike generic mineral dryers that blast material with 500°C+ hot gas — destroying copper value through sulfide oxidation — our burner system operates in a controlled low-temperature range of 150°C to 380°C, protecting chalcopyrite, bornite, and chalcocite from thermal decomposition. The burner accepts natural gas, diesel, LPG, heavy oil, steam, or thermal oil. Control is managed by a Siemens S7-1500 PLC driving a 12-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, South Africa), Central Asia (Kazakhstan, Uzbekistan), Southeast Asia (Indonesia, Philippines), South America (Chile, Peru, Mexico), 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 sulfide 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 sulfide-safe lift flights scoop the material and cascade it through a curtain of controlled-temperature hot air. This is the critical engineering difference from conventional dryers: copper concentrate contains chalcopyrite (CuFeS₂), bornite (Cu₅FeS₄), and pyrite (FeS₂) — all of which begin to oxidize and lose copper value above 380°C. Traditional rotary dryers run at 500°C–700°C, converting copper sulfides to oxides and dropping copper grade by 2%–5%. Our intelligent temperature profiling system uses multiple thermocouples along the drum length to enforce a staged heat curve, ensuring no zone exceeds 380°C. The flights also have a gentle derustling function — breaking apart the semi-sticky concentrate without the destructive high-speed impact of a cage mill, which in conventional air-flow dryers requires replacement every 2 to 3 weeks due to rotor wear.
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 65–95 cubic meters of natural gas. At 30TPH capacity with 14% inlet moisture and 0.8% target moisture, the plant evaporates roughly 3.8 tonnes of water per hour, consuming approximately 250–360 cubic meters of gas per hour.
Moisture-laden exhaust gas exits the feed end into a cyclone separator for primary dust removal, then a pulse-jet baghouse for secondary filtration. But copper concentrate drying has a challenge that gold concentrate drying does not — the exhaust contains SO₂ from pyrite decomposition. Our system addresses this head-on: the baghouse captures 99.5%+ of entrained copper particles, routing them back to the finished product, while an optional wet or dry SO₂ scrubber (bolt-on module) reduces stack SO₂ to below 100 mg/m³, meeting China GB16297 and EU Industrial Emissions Directive limits. Tailings dust emission stays below 15 mg/m³.
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 or sulfur-laden dust from escaping into the plant environment.
Product Features
Low-Temperature Sulfide-Safe Drying — The Core Innovation
The single biggest financial risk in copper concentrate drying is not energy cost — it is copper loss through sulfide oxidation. When chalcopyrite hits 380°C, it starts converting to copper oxide, and your copper grade drops 2%–5% permanently. Traditional rotary dryers and air-flow dryers both operate at 500°C–700°C, making this damage unavoidable. Our plant caps all zones at 380°C maximum, enforced by real-time thermocouple monitoring and automated staged temperature control. At current copper prices, protecting even 1% copper grade on a 30TPH operation saves hundreds of thousands of dollars per year. This is not a marketing claim — it is a metallurgical necessity we solved through 16 years of non-ferrous concentrate drying experience.
SO₂ Emissions Control — Built In, Not Bolted On
Copper concentrate is the only common mineral concentrate that releases SO₂ during drying, because of its iron sulfide content. 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. We have helped over 180 overseas clients pass environmental audits with this configuration.
99.5%+ Copper Recovery in Dust System
Every gram of copper concentrate that escapes as stack dust is money lost. At 30TPH with 14% inlet moisture, a conventional dryer can lose 15–60 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 exceeding $9,000 per tonne, this alone saves tens of thousands of dollars per month.
No Cage Mill, No Rotor Wear Headaches
Conventional air-flow copper concentrate dryers use a cage mill (rotor spinning at 250–300 RPM) to break up sticky concentrate before it enters the drying tube. The rotor hammers wear through every 2 to 3 weeks, requiring shutdown and weld repair — a major operational headache. Our rotary drum design eliminates the cage mill entirely. The low-temperature lift flights perform gentle derustling inside the drum, with no high-speed rotating parts exposed to abrasive sulfide concentrate. Maintenance intervals stretch to months, not weeks.
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 to 3 × 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 2 to 3 forty-foot high-cube containers. Ocean freight is economical, customs clearance is straightforward, and on-site assembly takes just 7 to 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.
Core Competitive Advantages
Copper grade protection — conventional dryers operate above 500°C, oxidizing copper sulfides and dropping grade by 2% to 5%; our plant caps at 380°C, zero copper grade loss.
SO₂ emission control — conventional dryers have no sulfur treatment, failing environmental audits in Chile, Peru, and Zambia; our plant offers optional scrubber, SO₂ below 100 mg/m³.
Dust recovery rate — conventional dryers recover 90% to 94%, losing copper in the stack; ours recovers 99.5% plus, closed-loop return to product.
Thermal efficiency — conventional dryers achieve 35% to 45% with co-current flow; ours achieves 70% to 76% with counter-current heat recovery.
Cage mill elimination — conventional air-flow dryers need rotor replacement every 2 to 3 weeks; our rotary drum has no cage mill, no rotor wear.
Core component lifespan — conventional dryers last 3,000 to 4,000 hours on carbon steel; ours lasts 10,000 plus hours on Mn13 plus ceramic protection.
On-site commissioning — conventional systems need 30 to 45 days with heavy field welding; ours needs 7 to 10 days, modular plug-and-play.
Drying uniformity — conventional dryers deviate plus or minus 1.5% to 2.5%; ours controls within plus or minus 0.3%.
Global voltage support — conventional dryers support single voltage only; ours supports 220V to 480V, 50Hz to 60Hz full range.
Certification — conventional dryers often have no certification or single mark; ours holds CE plus ISO9001 plus ISO14000 triple certification.
Direct Factory Pricing
Buying from us means buying from the people who weld the steel, cast the flights, and program the PLC. There is no trading company markup, no agent commission, no distributor margin. Your investment goes entirely into Q245R steel, Mn13 alloy castings, 95% alumina ceramic tiles, Siemens PLCs, low-temperature burner systems, and 10,000-hour wear life — not into someone else's profit margin.
Lead Time & Quality Assurance
Industry average for a custom copper concentrate dryer: 60 to 90 days. Our standard model ships in 15 days. Custom configuration: 30 to 45 days. Every machine passes a 72-hour continuous full-load test before packing.
Get Your Custom Proposal Within 24 Hours
Send us your concentrate specs — copper grade, moisture content, sulfur content, particle size distribution, target outlet moisture, local fuel type, site voltage, and plot dimensions. Our engineering team will deliver a complete technical proposal with equipment layout, process flow diagram, and commercial quotation within 24 hours. Factory direct. Zero middleman. Contact us now to schedule your factory visit.
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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