Those who sell mining machinery will not tell you that there are currently two types of multi-cylinder cone crushers in the international market. They are very similar in terms of external structure, but the internal structure is very different. One uses a main shaft fixed on the frame and an eccentric sleeve. Rotating around the main axis directly drives the moving cone to perform a swing motion. The main shaft of this multi-cylinder is thicker and shorter, and has a higher load-bearing capacity. This is the true multi-cylinder cone crusher. The other one uses the main shaft and the moving cone integrated. There is a structure with an eccentric sleeve driving the main shaft and the moving cone. Some people call it a multi-cylinder cone crusher. It is actually a spring cone crusher with an external safety structure changed. It is a disguised multi-cylinder cone crusher.
Can the so-called hard rock impact crusher replace the cone crusher?
The hard rock impact crusher is an industry standard implemented on October 1, 2015. It can crush ore rocks with a pressure resistance of no more than 300MPa. The internal cavity is designed with a vortex crushing chamber and a three-stage crushing zone. The rotor system adopts The keyless cone sleeve connection uses a wear-resistant blow hammer. However, over the years, although the service life of replacement wear-resistant and consumable parts has been improved compared to ordinary impact crushers, the later maintenance cost is still higher than that of cone crushers, so it is high. For hard stones, it is recommended to use a cone crusher with a shaping machine.