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Fine crusher is also called tertiary crusher, which adopts the principle of “stone hit stone” to crush materials. It upgrades the traditional three crushing stages to the two crushing stages.
Fine jaw crusher is a robust and precise solution for pre-crushing a wide range of materials from middle hard to hard and brittle substances. Ideal for laboratories and processing companies, this stone crusher plant ensures fast and accurate sample processing. Its innovative design allows for easy maintenance with replaceable wear parts, minimizing downtime.
The fine crusher is mainly suitable for grinding and processing in metallurgy, building materials, chemical, mining, railway, water conservancy and other industries. The jaw crusher plant is used before the ball mill to increase the production efficiency of the ball mill by 50%.
Fine jaw crusher is especially suitable for fine and medium crushing of materials with hardness below 9 such as quartz, feldspar, calcite, marble, ceramics, iron ore, copper ore, gangue, phosphate rock, granite, basalt, silicon carbide, corundum, insulation materials and other brittle materials.
The fine jaw crusher is mainly composed of the rotary part, guard plate and box part.
Some non-overlapping hammer carriers are arranged on the wheel core of the rotary part. The hammer head, whose width is larger than the hammer carrier and the wheel hub, is fixed on the hammer carrier. The wheel core is composed of several wheel hubs, which are fixed on the main shaft. The two ends of the main shaft are supported on the frame with rolling bearing seats.
The material is sent to the cavity from the inlet and falls on the high-speed rotating hammer head. The material is initially crushed between the hammer and the impact plate.
After the material is repeatedly hammered and impacted with high frequency, it forms a pile on the median septum, then falls on the material plate of the high-speed rotating lower rotor. Finally, it is thrown to the impact plate at high speed to be impacted, crushed and ground by the mobile plate hammer.
Therefore, the material undergoes multiple compound pulverization, scouring and grinding in the process of falling by its own weight to achieve an ultra-fine effect, and then is discharged through the discharging port.
| PXJ tertiary impact crusher | Rotorø×Width (mm) | |||||||
| Specification | 800×400 | 800×600 | 800×800 | 1010×1010 | 1200×1200 | 1400×1400 | 1600×1600 | 1800×1800 |
| Feed opening size(mm) | 400×185 | 500×250 | 550×300 | 1000×350 | 1200×450 | 1500 | 1600×550 | 1800×800 |
| Feeding size (mm) | <120 | <180 | <180 | <180 | <180 | <190 | <190 | <190 |
| Discharging size (mm) | 0-10 | 0-10 | 0-10 | 0-10 | 0-10 | 0-10 | 0-10 | 0-10 |
| Adjustable range of discharge opening (mm) | 5-50 | 5-50 | 5-50 | 5-50 | 5-50 | 5-50 | 5-50 | 5-50 |
| Cement Clinker（t/h） | 10-30 | 1040 | 20-45 | 25-55 | 35-90 | 50-150 | 85-210 | 125-270 |
| Limestone（t/h） | 18-45 | 23-55 | 28-65 | 35-75 | 45-110 | 50-150 | 95-260 | 140-310 |
| Power（kw） | 4P 37KW | 4P 45KW | 4P 45KW | 4P 55KW | 6P 110KW | 6P 160KW | 4P 250KW | 4P 315KW |
| Theoretical weight | 3.9 | 4.5 | 6 | 10.5 | 14.4 | 22 | 35 | 49.7 |
Answer: Key factors influencing separation include the table’s motion (stroke and frequency), water volume and slope, feed rate and concentration, and the feed material’s particle size and shape. Proper adjustment of these factors is critical for efficient separation. The table’s longitudinal and transverse slopes must be precisely controlled. The feed concentration should also be appropriate, typically 20-30% for coarse minerals and 15-25% for fine minerals.
Answer: Operation involves observing the bed surface and adjusting the slope, water flow, and feed rate. Regular maintenance includes checking for loose parts, lubricating moving components, inspecting for wear, and cleaning the table surface. Preventative maintenance should be performed regularly, with intervals ranging from every month to once a year.
Answer: Common issues can include table shaking or choppy cuts, uneven material distribution, or poor separation. Troubleshooting may involve checking for loose bolts, damaged springs, or misalignment, adjusting belt tension, inspecting electrical components, and ensuring proper lubrication. If there’s unusual noise, identify the source and eliminate the problem.
Answer:
Advantages: Shaking tables offer high enrichment ratios, are relatively simple to operate, and produce visible separation zones, allowing for easy adjustment and monitoring. They are suitable for a wide range of particle sizes and densities.
Disadvantages: They typically have lower throughput capacity compared to some other methods like jigs or spirals. They also require a relatively large footprint and consume a significant amount of water.
Answer: The selection depends on the material being processed, the desired throughput, and the particle size range. Factors to consider include the deck area, stroke length, and riffle design. Consulting with a manufacturer or expert is recommended to determine the optimal configuration.
