The ZC series Decanter Centrifuges from Zhongcheng Machinery are fifth-stage solids control devices used in contemporary drilling operations. They use high-speed centrifugal force to precisely separate ultra-fine solids from drilling fluids. Our units have effective lengths of 1257mm and 1000mm, respectively, with bowl interior diameters of 356mm and 450mm. These devices provide exceptional performance since they are designed for challenging applications in oil and gas drilling, trenchless tunneling, drilling waste management, and industrial solid-liquid separation. The drum and conveyor are constructed from high-strength stainless steel with tungsten carbide reinforcement in critical wear zones for a longer service life. Both fixed-frequency and VFD versions of our centrifuges are supported by ISO 9001/14001/45001 certifications, HSE compliance, and TÜV/BV approval.
Decanter centrifuges are horizontal sedimentation devices that continuously separate liquid and solid suspensions of different densities. These advanced devices speed up the settling of particles from carrier liquids by producing centrifugal forces that frequently surpass 3,000 Gs.
Centrifugal sedimentation principles are the foundation of the separating process. Solids migrate to the bowl wall and cleared liquid travels toward the center when your drilling fluid enters the revolving bowl at a high speed. Settled solids are continuously moved toward the discharge end by the internal scroll conveyor, which rotates at a slightly different speed than the bowl.
Our high-speed models capture ultra-fine particles as small as 2-5 μm, operating at speeds above 3000 rpm. They are therefore perfect for keeping low-density fluids in your operations and purifying deep dirt.
Every bowl component undergoes high-precision dynamic balance that complies with ISO 1940. This guarantees little vibration and low noise levels—usually less than 85dB—during continuous operation, safeguarding the safety of your crew as well as the integrity of the equipment.
Our ZC series offers versatile configurations to match your specific separation requirements:
| Model | ZCLW356×1257-N(VFD) | ZCLW450×1000-N(VFD) |
| Bowl Inside Diameter at Large End (mm) | 356 | 450 |
| Bowl Effective Length (mm) | 1257 | 1000 |
| Bowl Speed (rpm) | ≤3200 | ≤2800 |
| Separation Factor | ≤2090g | ≤1975g |
| Separation Cut Point (μm) | 2～5 | 4～6 |
| Throughout (m³/h) | ≤35 | ≤50 |
| Main Motor Power (kW) | 30 | 37 |
| Auxiliary Motor Power (kW) | 7.5 | 7.5 |
| Driving Method | Electric drive or inverter | Electric drive or inverter |
| Liquid Supply Pump Power (kW) | 7.5 | 7.5 |
| Theoretical Weight (kg) | 3100 | 3450 |
| Dimension (mm) (L×W×H) | 3200×1500×1800 | 3280×1620×1940 |
The L/D ratio directly impacts your separation performance. Higher ratios provide extended clarification zones for clearer centrate, while compact designs excel at efficient dewatering.
Wear-Resistant Construction for Extended Service Life
Your centrifuge faces harsh conditions daily. That's why we construct our drums and conveyors from high-grade stainless steel, with tungsten carbide tiles protecting scroll flights and ceramic inserts at discharge ports. This design significantly reduces downtime and replacement costs.
Intelligent Speed Regulation with VFD Systems
Our VFD-equipped models give you real-time control over bowl and differential speeds. You can adjust parameters based on actual mud properties, optimizing separation efficiency while reducing energy consumption. The soft-start capability minimizes mechanical impact on your drive system.
Dynamic Balancing for Reliable Performance
Before leaving our facility, each bowl assembly is put through a rigorous high-speed dynamic balancing process. This guarantees seamless, low-vibration functioning around-the-clock, preserving structural integrity even in harsh circumstances.
Versatile Speed Configurations
Choose between middle-speed units for cost-effective barite recovery in weighted mud, or high-speed variants for ultra-fine particle capture in Drilling Waste Management Systems. Each configuration is engineered for simple maintenance and maximum uptime.
Automated Torque Control
Modern process conditions fluctuate constantly. Our automated torque control systems adjust scroll speed in real-time based on solid load, preventing blockages and maintaining consistent output quality.
Oil & Gas Drilling Operations
In drilling environments, our Decanter Centrifuges handle abrasive solids and high-density fluids efficiently. They excel at barite recovery in weighted mud systems and removing harmful solids in conventional drilling sections. The units withstand harsh offshore and onshore conditions while maintaining consistent performance.
Trenchless and Tunneling Projects
Horizontal directional drilling generates significant volumes of drilling fluid requiring continuous treatment. Your equipment must process varying solid concentrations without interruption. Our centrifuges deliver the throughput and reliability these applications demand.
Drilling Waste Management Systems
Environmental regulations require effective treatment of drilling cuttings and waste fluids. As core components of waste management systems, our high-speed centrifuges achieve maximum solids separation, reducing disposal volumes and environmental impact.
Industrial Solid-Liquid Separation
Beyond drilling applications, these units serve wastewater treatment facilities, chemical processing plants, and mineral processing operations. Their compact footprint and continuous operation capability make them superior alternatives to batch filter presses.
Zhongcheng Machinery employs thorough quality control procedures during the production process:
Material Verification: For all pressure-bearing and contact components, we use Mill Test Certificates (MTC) to ensure complete traceability. We offer exceptional corrosion resistance with our Duplex Stainless Steel 2205/2304 products.
Non-Destructive Testing: Critical weldments are put through ultrasonic or dye penetrant testing to ensure structural integrity under high G-loads. Operational failures are prevented by doing this.
Factory Acceptance Testing: Prior to shipment, every item must pass an operational run-test lasting at least four to eight hours. To ensure that performance satisfies requirements, we keep an eye on vibration displacement, noise levels, and bearing temperature rise.
International Certifications: We follow ISO 9001 Quality Management, ISO 14001 Environmental Management, and ISO 45001 Occupational Health and Safety in our production processes. Products for foreign markets are approved by TÜV and BV.
We offer thorough assistance for the duration of your equipment's lifecycle:
Pre-Installation Planning: Our technical team offers thorough engineering drawings, flowcharts, and component diagrams to guarantee a seamless integration with your existing systems.
On-Site Commissioning: Expert experts supervise installation and complete thorough commissioning procedures, ensuring optimal performance immediately.
Operator Training: We provide hands-on instruction in troubleshooting methods, normal maintenance procedures, and operation concepts. The Knowledge required for autonomous operation is acquired by your team.
Documentation Package: Each unit comes with comprehensive operating and maintenance manuals that give your staff clear instructions.
Continuous Technical Consultation: Throughout the life of your equipment, our engineering staff is still available to provide technical advice and suggestions for process optimization.
We ensure your equipment arrives safely:
Heavy-duty polyethylene film, waterproof tarpaulins, and industrial strapping are examples of packaging that is safe for transportation. Depending on the equipment's size and the transportation needs, pallets or wooden crates are offered.
Our advantageous position in Shaanxi Province makes it simple to access the ports of Shanghai and Tianjin. Effective international shipping is made possible by solid logistical alliances.
Standard Lead Times:
This rapid turnaround minimizes project delays and keeps your operations on schedule.
Q: Why is my discharge cake moisture higher than expected?
A: Elevated moisture typically results from incorrect differential speed or insufficient G-force. Adjusting VFD parameters to increase residence time usually improves cake dryness. Consider evaluating your feed concentration and polymer dosing rates as well.
Q: How should I handle highly abrasive materials?
A: We utilize replaceable tungsten carbide tiles on scroll flights and ceramic inserts at discharge ports specifically for abrasive applications. Regular inspection and timely replacement of wear components extend overall equipment lifecycle.
Q: What maintenance do high-speed bearings require?
A: It is crucial to regularly lubricate using high-temperature synthetic grease. Use regular vibration analysis to find early indicators of misalignment or fatigue. Unexpected breakdowns are avoided with this predictive maintenance strategy.
Q: Can the centrifuge handle fluctuating feed concentrations?
A: Yes. Modern units feature automated torque control systems that adjust scroll speed in real-time based on solid load. This prevents blockages and maintains consistent separation performance despite feed variations.
Q: What does the L/D ratio mean for my process?
A: A higher L/D ratio provides a longer clarification zone, ideal for achieving clearer liquid phase (centrate). Lower ratios offer more compact designs suitable for straightforward dewatering applications where centrate clarity is secondary.
Warranty and After-Sales Support
Our extensive one-year guarantee, which covers manufacturing flaws and component failures under typical working conditions, safeguards your investment.
Our after-sales service includes:
With over 30 years of machinery manufacturing experience and a professional service team, we provide complete project solutions beyond just equipment supply.
Are you prepared to increase the effectiveness of your solid-liquid separation with Decanter Centrifuges? To precisely meet your needs, our engineering staff can alter motor specs, control configurations, and bowl dimensions.
Contact Us today at oliver@zcgukong.com for technical consultation and quotation.
February 28, 2024
Anonymous, On-site Drilling Engineer, Domestic Oilfield Operator
Zhongcheng’s mud circulation system has been running continuously at our Xinjiang desert site for 8 months, with no major breakdowns or costly operational halts. Its solid build and wear-resistant components have helped keep our maintenance and repair costs in check. In the harsh downhole conditions here, its durability reliably meets our daily operational needs.
January 15, 2025
Anonymous, Technical Project Lead, International Oilfield Service Provider
We had an urgent need for a custom mud zero-discharge system for a coalbed methane project, and Zhongcheng delivered. Their engineering team locked in the designand shipped the full system in 45 days, and it integrated perfectly with our existing ZJ50 rig. On-site commissioning even finished ahead of schedule. Their technical know-how and speed are exactly what we need for time-sensitive projects.
February 28, 2024
Anonymous, On-site Drilling Engineer, Domestic Oilfield Operator
Zhongcheng’s mud circulation system has been running continuously at our Xinjiang desert site for 8 months, with no major breakdowns or costly operational halts. Its solid build and wear-resistant components have helped keep our maintenance and repair costs in check. In the harsh downhole conditions here, its durability reliably meets our daily operational needs.
January 15, 2025
Anonymous, Technical Project Lead, International Oilfield Service Provider
We had an urgent need for a custom mud zero-discharge system for a coalbed methane project, and Zhongcheng delivered. Their engineering team locked in the designand shipped the full system in 45 days, and it integrated perfectly with our existing ZJ50 rig. On-site commissioning even finished ahead of schedule. Their technical know-how and speed are exactly what we need for time-sensitive projects.
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