In the fields of mining, construction waste treatment and industrial recycling, the crushing of wet and sticky materials (such as high-moisture ore, wet coal, clay and construction waste containing silt) often faces challenges such as equipment blockage, low efficiency and increased wear. Metso's metso vertical shaft impact crusher throwing head has built an adaptive solution for wet and sticky materials through material innovation, structural optimization and intelligent control technology, significantly improving the reliability and economy of the equipment under complex working conditions.
Metso's metso vertical shaft impact crusher throwing head uses a high-chromium alloy and tungsten carbide composite material, and the surface is treated with nitriding or tungsten carbide coating to form a smooth interface with a low friction coefficient. For example, in the crushing of wet and sticky coal, the coating can reduce the amount of material adhesion by more than 60%, avoiding equipment downtime due to material accumulation. At the same time, the edge of the metso vertical shaft impact crusher throwing head is designed as a replaceable wear-resistant block. When the local wear is severe, only the modular components need to be replaced, reducing maintenance costs.
In view of the poor fluidity of wet and sticky materials, Metso's crusher is equipped with an intelligent control system that can adjust the speed of the metso vertical shaft impact crusher throwing head in real time. For example, when processing clay with a moisture content of 15%, the system automatically reduces the speed to 1200rpm (20% lower than normal conditions), while increasing the impact force through the hydraulic system to ensure that the material is fully dispersed in the crushing chamber. This "low speed and high energy" mode not only prevents material slippage, but also improves particle size uniformity by extending the crushing time.
The metso vertical shaft impact crusher throwing head adopts a double helical tooth design, which forms a spiral airflow during rotation and uses centrifugal force to throw the material to the wall of the crushing chamber. For example, when crushing construction waste containing mud and sand, this design can reduce the moisture content to less than 8%, reducing the mud wrapping around the metso vertical shaft impact crusher throwing head. At the same time, the gradual angle of the helical teeth allows the material to be continuously turned during the crushing process to avoid local overheating and adhesion.
The Metso crusher has a built-in high-pressure spray device that can spray cleaning agents (such as lubricating fluid containing nano-silica) to the metso vertical shaft impact crusher throwing head at regular intervals to dissolve the sticky components in the material. In addition, a 5mm gap is reserved between the metso vertical shaft impact crusher throwing head and the crushing chamber wall to form a self-cleaning channel, so that large particles are naturally discharged under the action of centrifugal force, avoiding fine sand clogging the equipment.
The metso vertical shaft impact crusher throwing head adopts a split design, and the main shaft and the wear block are connected by bolts, and the replacement time is shortened to within 2 hours. For example, in a wet sticky ore processing project, when the wear block is worn to 1/3 of the original thickness, the operator only needs to remove the bolts to complete the replacement, without stopping the machine to disassemble the entire rotor, which significantly improves the equipment utilization rate.
Metso has developed a "vortex crushing chamber" for wet sticky materials. By adjusting the feed inlet angle and the distribution density of the metso vertical shaft impact crusher throwing head, the material forms a spiral flow in the crushing chamber. For example, when processing shale with a water content of 20%, this design can increase the production capacity to 120 tons/hour, which is 40% higher than traditional equipment, while reducing the impact of moisture on crushing efficiency.
The vibration frequency and temperature changes of the metso vertical shaft impact crusher throwing head are monitored in real time through sensors, and the wear trend is predicted by combining AI algorithms. For example, when the surface temperature of the metso vertical shaft impact crusher throwing head exceeds 150°C or the vibration frequency is abnormal, the system automatically triggers a maintenance reminder to avoid downtime losses caused by sudden failures.
Metso metso vertical shaft impact crusher throwing head has successfully solved the problems of adhesion, blockage and wear in the crushing of wet and sticky materials through the collaborative innovation of materials, structures and intelligent control. Its solution not only improves the stability of the equipment under extreme working conditions, but also reduces operation and maintenance costs through modular design and digital management, providing technical support for the efficient development of the global mining and environmental protection industries.
