Hydraulic Double Roller Crusher Spring Roll Crusher four roll crusher
PXJ High Efficiency Fine Crusher VSI Vertical Shaft Impact Crusher PCL Sand Making Machine
Raymond Mill YGM High Pressure Grinding Mill TGM Super Pressure Trapezium Mill
Trommel Screen Trommel Screen Machine Circular Vibrating Screen
In the field of modern road construction and maintenance of asphalt recycling material milling material and excavation material is a common source of waste material, they are derived from pavement milling operations and foundation excavation works. Milling material mainly refers to the waste asphalt concrete generated by the removal of old pavement by milling machines during the repair and reconstruction of highways, bridges, and other facilities; while excavation material includes a variety of soils, rock mixtures, and other mixed wastes excavated during construction and municipal projects. These two types of materials are large in quantity and contain recyclable components, how to choose an effective and environmentally friendly processing equipment. Introduction of Double Tooth Roll Crusher For this reason, the double tooth roll crusher, which is specially developed for the characteristics of milling and excavation materials, has come into being. This equipment makes full use of the core advantages of double-tooth roll crushing technology, with its strong targeting and excellent processing results, has become the ideal tool for processing these two types of materials. The design concept of the double roll crusher closely combines the characteristics of milled and excavated materials. Its inlet can accept materials with a maximum particle size…
With high efficiency, precision and durability at its core, the hydraulic roll crusher has become a star equipment in the modern industrial crushing field with its unique design and technological innovation. Combining energy saving and environmental protection with intelligent management, it is the ideal choice for improving production efficiency and reducing comprehensive costs. Whether it is a small or medium-sized enterprise or a large-scale production line, the benefits can be maximised through customised solutions. The advantages of hydraulic roller crusher can be analysed in detail from the following seven dimensions its core advantages are as follows: 1. Hydraulic Roll Crusher High efficiency and energy saving High pressure (up to hundreds of MPa) is applied through the hydraulic system to achieve efficient crushing of materials by squeezing and crushing, which is especially suitable for the treatment of hard ores (e.g. iron ore, granite), and the crushing efficiency is increased by more than 30% compared with the traditional equipment. Optimisation of energy consumption The hydraulic drive system dynamically adjusts the pressure, and the energy consumption is as low as 0.8-1.2kWh/t, which is 20%-30% more energy efficient than the jaw crusher. The energy consumption of High Pressure Roller (HPGR) is even 20%-50% lower…
The asphalt roll crusher is not only capable of handling cold/hot milling material when processing old asphalt milling material, but also crushes mixtures containing impurities (e.g. metal shavings). By changing the different tooth shapes (pointed, flat, combined), the machine can be adapted to a wide range of materials, from soft to high hardness (Mohs hardness ≤ 8). These advantages make the asphalt roll crusher become the core equipment to realise the closed-loop cycle of ‘milling material – recycled aggregate – new road surface’, and the adoption of the roll crusher can reduce the cost of road renovation by 20%-30%, and reduce carbon emission by more than 40%. 1. Flexible crushing technology to protect the material structure The asphalt roll crusher adopts the principle of flexible crushing, through the extrusion and shearing effect of the double-toothed roll, it can not only efficiently crush large milling materials, but also automatically adjust the crushing force according to the hardness of the material. This technology avoids excessive damage to asphalt aggregate by traditional crushing method, effectively protects the original gradation and physical properties, and ensures that the performance of recycled material is close to the standard of new material. 2. Asphalt Milling Material Crushing…
With its unique design and advanced technology, WMS Coke Coke Double Tooth Roller Crusher has been widely used in many industries, and its core advantages can be summarised as follows: First, high efficiency crushing and energy saving Coke Tooth Roller Crusher High-efficiency processing capacity Adopting the principle of shearing and extrusion by the relative rotation of double-toothed rolls, it can quickly crush large materials with high hourly output and stable operation. The tooth design optimises the crushing efficiency and reduces over-crushing phenomenon, which is especially suitable for materials with ‘more lumps and less powder’ (e.g. petroleum coke, coal, etc.). Energy saving and environmental protection Through the optimisation of the power system and hydraulic control, energy consumption is reduced by about 30% compared with traditional equipment, while reducing dust and noise pollution, in line with the requirements of green production. Precise particle size control and adaptability Uniformity of particle size By adjusting the pitch of the rollers or the hydraulic system, the particle size of the discharged material can be precisely controlled (e.g. ferrosilicon ore, limestone, etc.) to ensure that the finished product is uniform in particle size and meets the requirements of different processes. Wide applicability It can handle a…
Huashengming double roll crusher has outstanding performance in the crushing of ores and building materials, and its core advantages can be summarised in the following six points: High-efficiency crushing and precise particle size control High-efficiency processing capacity: Adopting the relative rotation design of double-toothed rolls, the machine crushes materials quickly through extrusion and shear force, which is especially suitable for large ores (e.g., iron ore, silico-manganese ore) and hard building materials (e.g., cement blocks, limestone). Uniform discharge and low powder rate: the hydraulic system precisely adjusts the gap between the teeth and rolls to ensure uniform discharge size (e.g. 1-6cm) and more lumps and less powder to meet the demand for recycled aggregates and ore sorting. Double Roll Crusher Flexibility to adapt to different materials: tooth shape can be customised (sharp teeth, flat teeth, serrated teeth, etc.), compatible with sand, coal, construction waste, iron ore and other materials, large crushing ratio, multi-purpose machine. Durability and low maintenance cost High wear-resistant material: the tooth roll adopts wear-resistant alloy or special coating, the service life is twice as long as the ordinary roll skin, reducing the frequency of replacement. Structure optimisation: compact design reduces the failure rate, modularity of key components, easy…
The complete process of pebble crushing and sand making needs to go through multi-stage crushing, screening, shaping and cleaning, etc., and finally produce the mechanism Pebble sand making sand which meets the standard of construction sand. I. Pebble sand making Raw material preparation and pretreatment 1.Raw material source Riverbed pebbles, mountain weathered pebbles or mine-mined pebbles (particle size ≤ 1200mm). 2.Pre-treatment Impurity removal: remove impurities such as wood chips and metals by hand or mechanically (e.g. excavator magnetic separator). Pre-screening: use vibrating grizzly screen to separate soil and super size stones (>1200mm need to be crushed manually). Cleaning (optional): If the mud content >5%, use drum washing machine to pre-wash the mud. Core crushing and sand making process 1. Coarse crushing stage Equipment: Jaw Crusher Function: Crush the raw material to the medium size of ≤300mm. Process: Raw material → Vibrating feeder uniform feeding → Jaw Crusher crushing → Belt conveying to transit pile or directly into the medium crushing stage. 2. Medium and fine crushing stage Equipment: fine jaw crusher or impact crusher. Function: To further crush the coarse crushed material to ≤50mm fine aggregate. Selection logic: High hardness pebbles are preferred to fine jaw crusher (strong wear resistance,…
Granite crushing starts with understanding granite,Granite belongs to high hardness rock, the wear resistance and processing capacity of the equipment is especially important. For example, cone crusher is more suitable to deal with hard rock than impact crusher, so it is necessary to recommend the equipment with good wear resistance and maintenance program when configuring. At the same time, environmental issues should not be ignored, especially dust and wastewater treatment, the user may need to comply with local environmental standards, so in the combination of equipment need to consider dust removal and wastewater recycling system. The following is the detailed equipment combination plan for granite crushing and sand making with the capacity of 50-100 tons per hour. Process: Jaw Crusher + Sand Making Machine + Screening Granite Crushing Equipment list: 1. coarse crushing: jaw crusher (feed ≤ 500mm, discharge 60-150mm) 2. Medium crushing: Impact crusher (feed ≤ 350mm, discharge ≤ 50mm) Alternative: Heavy hammer crusher (one-time molding, cost reduction but weaker wear resistance) 3. Sand making: roller crusher (feed ≤ 50mm, finished sand 0-5mm) 4. Screening: 3YK1860 vibrating screen (3-layer screen, screening efficiency ≥ 90%) Advantages: low initial investment, flexible and suitable for small-scale production Disadvantages: short replacement cycle of…
As a typical intermediate and fine crushing equipment, the double roll crusher combines the triple mechanical effects of extrusion, shear, and grinding in its crushing process. The entire crushing process is divided into the following five stages Stage 1: Pre screening enters the roller crusher Materials exceeding three times the gap are intercepted by the pre sieve Qualified materials slide into the feeding area at a speed of 0.8-1.2m/s along the natural angle of rest Stage 2: Initial biting of the double roller crusher Form a forced feeding flow, biting into a depth of 1/8 of the roller diameter Stage 3:double roller crusher laminating crushing The material particles undergo three rounds of crushing Stage 4: Grading of finished products discharged from the double roller crusher The thickness flow effect at the gap forms a particle size screening layer Stage 5: Forced discharge of double roller crusher Set the angle of the scraper plate to 45 ° to reduce material stickiness The crushing process of the roller crusher is actually a system engineering of multiple physical field coupling effects. The transition from traditional “rigid extrusion” to “flexible crushing” is becoming a new direction for improving equipment efficiency., The new generation of units…
By aligning equipment type and workflow design, dual-stage crushers enhance efficiency and reduce costs for small-to-medium aggregate plants, solid waste processing projects, and mineral processing enterprises. Perform material testing before deployment to ensure compatibility. Dual-Stage Crusher: Applicable Materials and Scenarios A dual-stage crusher (or two-stage crusher) is a high-efficiency crushing device with a two-stage structure (coarse + fine crushing), ideal for processing low-to-medium hardness materials, particularly those with high moisture content. Below are its typical applications and material types: I. Applicable Material Types Ores Metallic ores: Iron ore, copper ore, gold ore, lead-zinc ore, etc. Non-metallic ores: Limestone, granite, basalt, dolomite, etc. Construction Materials Aggregates: Limestone, sandstone, concrete blocks, construction waste, etc. Industrial materials: Gypsum, feldspar, quartz sand, etc. Coal and Derivatives Coal, coal gangue (especially suitable for high-moisture coal gangue due to its sieve-free design). Shale, slag, etc. Industrial Waste and Construction Debris Concrete waste, bricks, asphalt pavement debris (requires pre-treatment to remove metal impurities). Slag, steel slag, tailings, and other industrial solid waste. Chemical Raw Materials Medium-low hardness chemical materials requiring fine crushing, such as phosphate ore and sulfur ore. II. Key Features and Applications High Moisture Tolerance The sieve-free design prevents clogging from wet or sticky materials…
To address uneven particle size distribution in Hydraulic Double Roller Crusher processing quartz stone, a systematic approach is required. Below are targeted solutions addressing mechanical, operational, and material-specific factors: I. Hydraulic Double Roller Crusher Inspection and Repair 1. Roll Parallelism Calibration Symptom: Misaligned roll axes result in inconsistent gaps (e.g., 8mm on one end, 12mm on the other). Inspection: Use a laser alignment tool to measure axial deviation (tolerance ≤0.1mm/m). Manual method: Measure the gap at three points (both ends and center) with feeler gauges (max deviation ≤0.5mm). Correction: Loosen bearing housing bolts. Adjust shims or hydraulic rods to realign rolls. Validate parallelism by feeding 10mm calibration blocks during a no-load test. 2. Roll Surface Wear Repair Wear Patterns: Grooves/wavelike deformations in high-pressure zones (e.g., feed end). Critical wear threshold: ≥3mm depth. Solutions: In-situ Hardfacing: Apply TDL-65 flux-cored wire (high-chromium cast iron) to rebuild surfaces (3–5mm thickness). Replace Roll Sleeves: Use bimetal composite sleeves (42CrMo base + WC-12Co coating) for 3–5x longer lifespan. 3. Hydraulic Double Roller Crusher Drive System Maintenance Gear Inspection: Apply Prussian blue to check tooth contact ratio (≥85% required). Gear backlash: 0.25–0.40mm for modules ≥20. Universal Joint Service: Replenish grease (NLGI 2# lithium-based) every 500 hours….
Effectiveness of Using Double Roll Crusher for Pebble Sand Making 1. Working Principle of Double Roll Crusher & Pebble Characteristics Working Principle: The double roll crusher crushes materials through two counter-rotating rollers that apply compression and shear forces, suitable for medium-hard materials in medium-to-fine crushing stages. Pebble Characteristics: Mohs hardness typically ranges from 6 to 7 (quartz-rich), demanding high wear resistance from equipment, with moderate crushing difficulty but significant abrasive wear. 2. Pros and Cons of Using Double Roll Crushers for Pebble Processing Advantages Uniform Output Size Adjusting the roll gap (typically 1-5mm) ensures stable production of machine-made sand ≤5mm. Controllable fineness modulus and angular/irregular grain shapes meet construction sand standards (e.g., GB/T 14684-2022). Low Over-Crushing Rate Compression-based crushing reduces stone powder generation (typically <10%), significantly lower than the 15-25% from impact crushers, easing downstream dust control. Simple Structure & Easy Maintenance Fewer maintenance points; roll skin replacement takes ~4–8 hours/session, ideal for small-to-medium sand plants requiring quick upkeep. Disadvantages Severe Roll Surface Wear High-hardness pebbles shorten roll lifespan. High-chromium alloy roll skins last ~800–1,500 hours for pebble processing, with annual replacement costs potentially reaching $4,000–11,000 (depending on capacity). Welding repairs can extend service life. Limited Throughput Efficiency Single-unit capacity…
Common Misconceptions in Roller Surface Material Selection for Double Roll Crushers and How to Avoid Them The material of the roller surface in the Double roller crusher is the most important, which determines the machine’s operating cost during the crushing process. Below, Huashengming Heavy Industry will explain to you: Common misconceptions and avoidance methods for selecting roller surface materials in roller crushers Misconception 1: Harder Materials Are Always Better, Ignoring Impact Resistance Flawed Assumption: Blindly selecting ultra-hard materials (e.g., high-chromium cast iron, tungsten carbide) without considering impact loads. Consequences: Brittle materials crack or spall under high-impact conditions (e.g., large ore blocks, metal scraps). Example: High-chromium rollers may fracture when crushing large, hard feed materials. Solution: For high-impact workloads, prioritize high-manganese steel (e.g., Mn18) or bimetal composite rollers to balance wear and impact resistance. Formula for assessment: Impact energy (J) = Material hardness (MPa) × Crushing force (kN). Use high-toughness materials if impact energy >200 J. Misconception 2: Neglecting Material Stickiness/Humidity Causes Blockages or Corrosion Flawed Assumption: Selecting materials based solely on hardness, ignoring stickiness or corrosivity. Consequences: Sticky or wet materials (e.g., clay, gypsum) adhere to rollers; acidic/alkaline materials corrode metal surfaces. Solution: For sticky materials: Use grooved rollers…
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