Twin-Roll Crusher for Medium-Soft Materials | High-Pressure Extrusion Crushing
50-200
Extrusion Pressure (MPa)
20-250
Capacity (t/h)
0.5-40
Discharge Size (mm)
ISO 9001
Certified Quality
Product Overview & Core Advantages
The double-roll sand making machine (also known as twin-roll sand maker, double-roll crusher) is high-efficiency crushing equipment independently developed by Shandong Hengtai Intelligent Manufacturing Equipment Technology Co., Ltd. specifically for sand making of medium-soft materials. Through high-pressure extrusion of 50-200MPa generated by opposite rotation of double rolls, it is widely used in cement, chemical, power, metallurgy, building materials and other industries.
Materials enter between two rolls and are subjected to high-pressure extrusion and shear forces, generating numerous micro-cracks inside, achieving "bed comminution" effect. Compared with impact crushing, it features lower energy consumption, less over-grinding, and excellent product particle shape.
Core Customer Benefits
Low Investment Cost — Simple structure, equipment price only 30-50% of impact crusher
Low Operating Cost — Energy consumption reduced by 20% compared with traditional sand makers, wear parts easily replaceable
Strong Adaptability — Dry and wet dual-use, normal operation in rainy and high-humidity environments
Applicable Project Types: Small and medium-sized manufactured sand production lines, cement raw material pretreatment, chemical raw material crushing, construction waste recycling sand making.
Applicable Materials & Application Scenarios
VSI Series crushers excel at processing medium-hard to ultra-hard materials for high-standard aggregate production:
Material Type
Compressive Strength
Typical Application
Limestone
≤150MPa
Cement plant raw material pretreatment, construction sand
Opposite rotation of double rolls generates high-pressure extrusion force for full material crushing. Uniform finished product particle size with reasonable gradation, meeting construction sand and aggregate processing requirements. Internal micro-cracks generated by extrusion can reduce subsequent grinding energy consumption by 30%.
Dry & Wet Dual-Use & Strong Scene Adaptability
Supports direct crushing of both dry and wet materials without additional drying or humidification treatment. Suitable for operation in rainy, high-humidity areas and dry environments, stable operation under different climatic conditions worldwide.
Flexible Adjustment & Controllable Capacity
Adjust roll gap through hydraulic or wedge adjustment system. Discharge particle size adjustable from 0.5-40mm, capacity covering 20-250 t/h, adapting to production needs of different scales.
Low Noise, Energy Saving & Easy Maintenance
Simple and compact structure with low operation noise. Energy consumption reduced by 20% compared with traditional sand making machines; wearing parts are roll surfaces, easy to replace with minimal daily maintenance.
Technical Specifications & Selection Guide
Model
Feed Size (mm)
Discharge Size (mm)
Capacity (t/h)
Rotation Speed (r/min)
Motor Power (kW)
Weight (t)
Dimensions (mm)
Recommended Scenario
2PGC450×500
200
0-100
20-55
50
11
3.4
2492×2200×758
Laboratory, small trial production
2PGC600×750
600
50-125
75-125
50
22
6.9
3265×2780×1442
Small sand and gravel plants
2PGC600×900
300
25-75
30-110
64
37
7.2
3265×2810×1442
Cement plant raw material crushing
2PGC900×900
≤350
≤80
150-250
70
30
13
3500×3300×1400
Medium sand making production lines
2PGC1250×1250
≤600
≤35
150-200
100
75×2
36.5
7980×5872×2200
Large mines
2PGC1200×1500
300
≤100
210
70.5
110
42.8
8010×4900×2170
Super-large projects
💡 Selection Recommendations:
• Small projects/trials (<50 t/h): 2PGC450×500 or 2PGC600×750, low investment threshold
• Medium production lines (50-150 t/h): 2PGC900×900, optimal cost-performance ratio
• Large mines (>150 t/h): 2PGC1250×1250 or 2PGC1200×1500, large capacity, low unit cost
*Above are conventional models. Customized equipment models can be provided according to customer requirements.
Working Principle
The double-roll sand making machine operates based on high-pressure bed comminution principle:
Material Feeding: Raw materials are evenly sent between two rolls via belt conveyor
High-Pressure Extrusion: Hydraulic system provides 50-200MPa pressure, double rolls rotate oppositely to clamp materials
Bed Comminution: Materials generate micro-cracks under high pressure, achieving selective crushing
Particle Size Adjustment: Control discharge size by adjusting roll gap, oversized particles automatically return for re-crushing
Crushing Characteristics: Less over-grinding, low needle-flake content, cubic finished product, high bulk density.
Application Scenario: Limestone raw material crushing, pretreatment before grinding Equipment Configuration: 2 units 2PGC900×900 Operation Parameters: Feed size 300mm, discharge size 25-40mm, processing capacity 200 t/h Project Results: Raw mill energy consumption reduced by 28%, annual electricity savings approximately CNY 1.2 million Investment Return: Equipment investment recovered in 18 months
🏆 Hunan Manufactured Sand Production Line
Application Scenario: River pebble sand making, 80 t/h capacity Equipment Configuration: Jaw crusher + 2PGC600×900 + vibrating screen Operation Parameters: Feed size 80mm, discharge size 0-5mm accounting for 70% Project Results: Manufactured sand mud content <3%, crushing value <25%, meeting GB/T 14684-2022 Class II sand standard Customer Benefits: Sand price CNY 65/ton, annual profit approximately CNY 4 million
Assembly Verification: Precision alignment of roll bearings, hydraulic system pressure testing
Factory Acceptance Testing (FAT): 4-hour continuous run test at 110% rated capacity with actual material
Pre-Shipment Inspection: Dimensional verification, roll gap adjustment testing, documentation audit
Certifications
ISO 9001:2015 - Quality Management System
Note: Our products are certified under ISO 9001 quality management system. We focus on delivering reliable equipment through rigorous quality control processes.
🛡️ Warranty & Service Commitment
Whole Machine Warranty: 1 year from date of commissioning
Wearing Parts: Excluded from warranty if damaged by improper operation or human factors
During Warranty Period: Free repair service; if repair fails, replacement with new machine
12-month warranty on mechanical and electrical components
Optional Add-Ons
Spare roll surfaces (high manganese steel or alloy)
Automatic lubrication system
Dust collection hood and ducting
Spare parts kit (bearings, seals, hydraulic components for 2-year operation)
Global Service Network
Installation Supervision: Hengtai technicians available for commissioning worldwide
Training: Operator and maintenance training at your site or our factory
Technical Support: 24/7 hotline and video diagnostic assistance
Customer Distribution
Our customers and distributors are located in: South America, Middle East, Southeast Asia, South Asia, Africa
Frequently Asked Questions (FAQ)
Q1: What hardness of materials is the double-roll sand making machine suitable for?
Suitable for medium-soft materials with compressive strength ≤150MPa, such as limestone, coal gangue, shale, gypsum, etc. For ultra-hard materials (>200MPa) like granite and basalt, VSI Series vertical shaft impact crusher or cone crusher is recommended.
Q2: How to adjust discharge particle size?
Adjust the gap between two rolls through hydraulic cylinders or wedge devices. Smaller gap produces finer discharge. Adjustment range 0.5-40mm, capable of producing coarse sand (0.5-1mm), medium sand (1-3mm), fine sand (3-5mm) and aggregate (5-40mm). Regular detection and adjustment according to finished product requirements is recommended.
Q3: Can both dry and wet materials be processed?
Yes. The double-roll sand making machine has strong adaptability to material moisture content, capable of processing wet materials with moisture content up to 15%, normal operation in rainy weather. However, excessive moisture content (>20%) may cause roll sticking, suggesting supporting mud removal screen or selecting dry process production.
Q4: How to replace roll surface after wear?
Roll surfaces are made of high manganese steel or alloy wear-resistant materials, service life 6-12 months (depending on material hardness). For replacement: loosen bearing seat bolts, lift out old roll, install new roll, completion within 4 hours. Hengtai provides original roll surfaces and on-site replacement guidance services.
Recommended Equipment Combinations & Typical Process Flows
The double-roll sand making machine usually serves as medium-fine crushing or shaping sand making equipment, requiring coordination with other equipment to form a complete production line.
Basic Configuration (Suitable for Small-Medium Scale, Controllable Investment)
Vibrating Feeder → Jaw Crusher (Coarse Crushing) → Double-Roll Sand Making Machine (Fine Crushing/Shaping) → Vibrating Screen → Belt Conveyor
Optional additions:
Sand Washer (improve sand quality, control mud content <3%)
Control finished product size, return oversize materials
Sand Washer
Remove impurities, improve sand quality
Cleaning before dewatering
Belt Conveyor
Material transfer
Connecting various processes, automated production
Why Choose Hengtai Double-Roll Sand Making Machine?
Expertise in High-Pressure Extrusion: 50-200MPa high-pressure extrusion crushing generates numerous micro-cracks inside materials, reducing subsequent grinding energy consumption by 30%, suitable for efficient processing of medium-soft materials.
Flexibility of Dry & Wet Dual-Use: No additional supporting equipment required, capable of directly processing dry and wet materials, adapting to sand making operations under different climatic conditions worldwide.
Significant Cost Advantages: Simple structure, few wearing parts, convenient replacement, low operating cost, suitable for investment in small and medium-sized enterprises and projects.
Stable & Reliable Quality: Certified by ISO9001, rolls made of wear-resistant materials, precision processed, long service life, low failure rate.
Get Your Custom Crushing Solution
Contact Shandong Hengtai — Your Trusted Crushing Equipment Manufacturer
As heavy industrial machinery, double-roll sand making machines require professional selection based on your specific material characteristics, processing capacity, and site conditions. We do not offer online purchasing—please contact us for technical consultation and customized quotation.
Tel/WhatsApp: +86 182 8866 4797 Email: ht6234nibin@gmail.com Address: Intelligent Equipment Manufacturing Industrial Park, High-Tech Zone, Linyi City, Shandong Province, China
