Jaw crushers, with their simple structure, high crushing ratio, and strong adaptability, have established a significant position in the mining crushing industry. Their operating principle is to split, crush, and grind materials through the cyclical squeezing motion of the movable and fixed jaws.
Antimony ore exhibits a medium hardness (Mohs hardness 3-3.5), often accompanied by brittle gangue minerals, and the raw ore size varies significantly. From an equipment compatibility perspective, the jaw crusher's feed port is designed to accommodate ore up to 30 cm in size, while the typical size of hand-sorted antimony ore is 20-50 cm, providing a high degree of size compatibility. Furthermore, this equipment offers significant crushing efficiency for brittle materials, and the complex swinging motion of the movable jaw effectively reduces over-crushing of the antimony ore.
In a real-world application, a PE900×1200 model jaw crusher achieved a stable production capacity of 800 tons/hour when processing fluorite ore of similar hardness at a mine, demonstrating its suitability for medium-hardness minerals. It's worth noting that the presence of sulfide minerals (such as stibnite) in antimony ore can increase equipment wear, but the use of high-manganese steel jaw plates can effectively extend their service life.
While jaw crushers offer significant advantages in antimony ore crushing, the following key considerations remain in practical application: First, the presence of sulfide minerals (such as stibnite) in antimony ore can exacerbate jaw plate wear, necessitating the use of high-manganese steel or composite jaw plates to extend their service life. Second, the feed size must be strictly controlled within 0.9 times the feed opening width to prevent large ore from becoming lodged in the crushing chamber and overloading the equipment. Furthermore, the discharge opening must be adjusted to take into account the feed size requirements of the secondary crusher. An excessively large discharge opening will reduce crushing efficiency, while an excessively small discharge opening can easily cause backflow.
