What is the difference between roll crusher and sizer?Roll crushers and classifiers are two distinct types of equipment with different functions in mining, building materials, and other industries. Their core differences lie in their working principles, application scenarios, and product objectives. As a professional manufacturer of crushing equipment, Huashengming excels in the field of crushing with its roll crushers, while its classifiers are primarily used for particle size separation.
roll crusher
1. Core Functionality and Working Principle Comparison
| Comparison Dimensions | Roller Crusher | Classifier (e.g., spiral classifier) |
|---|---|---|
| Core Functions | Material Crushing: Grinds large chunks into target particle size through compression and shear forces | Particle size classification: Separates crushed material by particle size (coarse/fine particle separation) |
| Working Principle | Dual rollers rotate in opposite directions, subjecting material to compression, splitting, or shear crushing | Based on differences in particle settling velocity in liquid, coarse particles settle to the bottom while fine particles overflow |
| Operating Modes | Dry crushing (no liquid medium required) | Wet operation (requires water or slurry medium) |
| Particle Size Control | Adjustable roll gap (1–20mm) controls output particle size | Controls classification size by adjusting screw rotation speed and overflow weir height |
| Typical Application Scenarios | Crushing raw coal, ore, construction waste, etc. | Forming a closed-circuit system with the ball mill to separate ore sand/fine slime |
2. Core Features of Huashengming Roller Crushers
Huashengming roller crushers (e.g., 2PGY series) prioritize high-efficiency crushing, with advantages centered on wear resistance, intelligent operation, and adaptability:
Patented Wear-Resistant Technology
Roll shells utilize high-chromium manganese steel + rare metal alloys, achieving a service life of 2–3 years (50% longer than conventional equipment) with compressive strength ≤160MPa.
Optimized roll tooth designs (e.g., bullet-head, wolf-tooth) enhance splitting efficiency and reduce over-crushing.
Intelligent Control & Energy Efficiency
Hydraulic system enables one-touch adjustment of roller gap (1–20mm) for precise output particle size control (e.g., 1–3mm fine sand).
Unit energy consumption reduced by 30%–50%, with power consumption per ton of material at just 1–2kWh, aligning with the “more crushing, less grinding” energy-saving principle.
High Adaptability Design
No wet material blockage: Processes coal gangue and construction waste with moisture content ≤35%.
Multi-functional crushing: Suitable for river pebbles, granite, iron ore, and recycled asphalt waste.
Typical Models & Capacity (Huashengming Roller Crusher):
| Model | Processing Capacity (t/h) | Applicable Scenarios | Core Advantages |
|---|---|---|---|
| 2PGY800×600 | 20–40 | Small and Medium-Sized Sand Plants | Hydraulic adjustment, low investment cost |
| 2PGY1800×2000 | 300–400+ | Large-Scale Mine-Based Sand Production | Fully automated CNC, remote monitoring |
3. Functions and Applications of Classifiers
Classifiers (e.g., spiral classifiers) do not perform crushing but sort crushed materials by particle size:
Core Function
Separates qualified-size products; coarse particles return to the mill for re-crushing, while fine particles proceed to subsequent stages.
Achieves desliming and dewatering in mineral processing workflows, enhancing downstream beneficiation efficiency.
Types and Characteristics
High-weir type: Overflow weir positioned above the spiral shaft, suitable for coarse particle classification (e.g., 0.15–0.2 mm).
Submerged type: Spiral blades fully immersed in the pulp, used for fine particle classification (e.g., 0.05–0.15 mm).
No screening function: Performs classification without crushing, relying on upstream crushing equipment to provide appropriately sized feed material.
Summary
What is the difference between roll crusher and sizer?A roller crusher serves as the primary crushing equipment, achieving particle size control through compression/shear forces. Its advantages include wear resistance, energy efficiency, and adaptability to complex materials. A classifier functions as a separation device, relying on sedimentation principles to separate coarse and fine particles. It does not possess crushing capabilities.
