Introduction
The YTO-FL series spiral classifier is a high-efficiency solid-liquid separation and particle size classification equipment, specially designed to work in closed circuit with ball mills in mineral processing plants. Available in high-weir and submergence types, it provides precise classification of ore particles, effectively controls grinding fineness and improves overall grinding circuit efficiency. With robust construction and low operating costs, YTO spiral classifiers are the standard matching equipment for ball mills worldwide.
Core Advantages
✅High-Precision Classification Efficiency
- Optimized spiral blade pitch and rotation speed design delivers 15-20% higher classification accuracy than traditional equipment
- Effectively separates qualified particles from unqualified materials, preventing over-grinding
- Uniform overflow particle size distribution, ensuring stable operation of subsequent separation processes
- Adjustable weir height for flexible control of classification fineness and processing capacity
✅ Ultra-Durable Wear-Resistant Construction
- High-chromium alloy spiral blades with 3-4 years service life, 2 times longer than ordinary steel blades
- Wear-resistant rubber lining available for highly abrasive ore pulp
- Heavy-duty steel frame with reinforced structure for long-term stable operation
- Sealed bearing assembly with dust and water protection, preventing slurry leakage
✅Low Energy Consumption & Maintenance
- Low-speed operation design reduces power consumption by 25-30% compared to hydrocyclones for coarse classification
- Simple structure with few moving parts, minimal maintenance requirements
- Automatic lifting mechanism for easy maintenance and shutdown cleaning
- Low noise operation (<80dB) and stable performance under 24/7 continuous operation
✅ Intelligent & Flexible Operation
- Optional automatic control system for real-time monitoring of slurry level and spiral speed
- Adjustable spiral rotation speed to adapt to different ore properties and production requirements
- Can be installed at various inclination angles (12-18°) to meet different process needs
- Modular design for easy transportation and installation
✅Multiple Functional Applications
- Can perform classification, dewatering, desliming and washing operations in one unit
- Suitable for processing materials with particle size ranging from 0.074mm to 3mm
- Available in single and double spiral configurations to meet different capacity requirements
- Customized designs available for special ore properties and site conditions
Working Principles
The spiral classifier consists of a trough inclined at an angle of 12-18°, a rotating spiral assembly and a driving mechanism. Ore slurry is fed into the trough from the upper part of the inclined end. Coarse and heavy particles settle to the bottom of the trough and are transported upward by the rotating spiral to the discharge port as sand return (unqualified material), which is sent back to the ball mill for re-grinding. Fine and light particles remain suspended in the slurry and overflow from the weir at the lower end as qualified product, entering the subsequent separation process.
- High-weir type: Suitable for coarse particle classification (0.15-3mm), ideal for primary grinding circuits
- Submergence type: Suitable for fine particle classification (0.074-0.5mm), ideal for secondary grinding and fine separation circuits
Technical Specifications
YTO-FL Series High-Weir Spiral Classifier
| Model | Spiral Diameter (mm) | Trough Length (mm) | Capacity (t/h) | Motor Power (kW) | Weight (kg) |
| YTO-FL-750 | 750 | 5500 | 10-30 | 5.5 | 2800 |
| YTO-FL-1000 | 1000 | 6500 | 30-60 | 7.5 | 4200 |
| YTO-FL-1200 | 1200 | 7500 | 60-120 | 11 | 6500 |
| YTO-FL-1500 | 1500 | 8500 | 120-200 | 15 | 9800 |
| YTO-FL-2000 | 2000 | 10500 | 200-400 | 22 | 16500 |
YTO-FL Series Submergence Spiral Classifier
| Model | Spiral Diameter (mm) | Trough Length (mm) | Capacity (t/h) | Motor Power (kW) | Weight (kg) |
| YTO-FL-750S | 750 | 6000 | 8-25 | 5.5 | 3100 |
| YTO-FL-1000S | 1000 | 7000 | 25-50 | 7.5 | 4600 |
| YTO-FL-1200S | 1200 | 8000 | 50-100 | 11 | 7000 |
| YTO-FL-1500S | 1500 | 9000 | 100-180 | 15 | 10500 |
Note: Double spiral classifiers with larger capacities are available upon request
Application Fields
YTO-FL series spiral classifiers are widely used in the following applications:
Matching with ball mills to form closed circuit grinding systems in gold, iron, copper, tungsten and other ore processing plants
Washing and desliming of alluvial gold, tin ore and manganese ore
Dewatering of concentrate and tailings before further processing
Removing fine slime from ore pulp to improve separation efficiency
Classification of construction sand and industrial sand
Typical Process Flows
Closed Circuit Grinding & Classification Circuit
Ball Mill Discharge → YTO-FL Spiral Classifier → Overflow (qualified product) to separation circuit | Sand Return to Ball Mill for re-grinding
Alluvial Gold Washing & Classification Process
Run-of-Mine Ore → Trommel Screen → YTO-FL Spiral Classifier (Washing & Desliming) → Underflow to gravity separation circuit | Overflow slime to tailings
YTO Service Commitment
Pre-Sales Service
✅ Free material classification tests and process design
✅ Professional equipment selection and matching recommendations with ball mills
✅ Plant layout design and installation guidance
✅ Detailed investment budget and return on investment analysis
Sales Service
✅ Manufacturing strictly in accordance with ISO9001 quality standards
✅ Factory inspection and acceptance before delivery
✅ Export-standard packaging for international shipping
✅ Complete set of technical documents and operation manuals
After-Sales Service
✅ Experienced engineers dispatched for on-site installation and commissioning
✅ Free training for operators and maintenance personnel
✅ 1-year equipment warranty, 6-month warranty for wearing parts
✅ Global supply of original spare parts with fast delivery
✅ 24/7 technical support via phone, email and video conference
Success Cases
500t/d Iron Ore Project in Ghana, Africa
- Adopted 2×YTO-FL-1500 high-weir spiral classifiers matching with ball mills
- Classification efficiency reached 85%, effectively controlling grinding fineness at -200 mesh 65%
- Reduced ball mill circulating load by 20%, increasing overall grinding circuit capacity by 15%
- Stable operation for 2 years with minimal maintenance
50t/d Rock Gold Processing Plant in Egypt
- Equipped with 1×YTO-FL-1000S submergence spiral classifier
- Precise classification of fine gold ore particles, ensuring high gold liberation rate
- Simple operation and low maintenance cost
- Helped client achieve 88% overall gold recovery rate
100t/d Tungsten Ore Project in Ganzhou, China
- Installed 2×YTO-FL-1200 spiral classifiers
- Effectively removed fine slime from tungsten ore pulp, improving subsequent gravity separation efficiency
- Classification accuracy increased by 18% compared to old equipment
- Reduced overall production cost by 12%
Contact Us
If you are looking for reliable jig machine equipment or need to optimize your mineral processing flow, please contact our technical team. We will provide you with customized solutions based on your ore characteristics and production requirements.
Sales Hotline
+86-13397070009
Technical Consultation
Official Website
www.ytomining.com
Factory Address
Mining Machinery Industrial Park, Shicheng County, Ganzhou City, Jiangxi Province, China
