What materials are suitable for chain crushers?
Chain crushers are suitable for crushing a variety of medium-to-low hardness, brittle materials. Suitable materials include coal, coke, ore, fertilizers (granular fertilizers such as ammonium chloride and potassium chloride), slag, and construction waste (brick and tile fragments).
How does a chain crusher work?
The core component of a chain crusher is multiple chains (or links) mounted on a rotor. When the rotor rotates at high speed, the chains spread radially under the action of centrifugal force. After entering the crushing chamber from the feed inlet, the material is repeatedly struck and torn by the high-speed chains. Simultaneously, the materials collide with each other, gradually breaking them down. The crushed material is discharged through the bottom screen (or discharge port) under the action of gravity, while larger particles continue to be crushed within the chamber until they reach the desired particle size.
What are the advantages of a chain crusher compared to a hammer mill?
The advantages of a chain crusher are primarily reflected in its adaptability to materials and its crushing method. Compared to hammer mills, chain mills have a certain degree of elasticity in their chains, providing better impact cushioning against hard objects during the crushing process and making them less susceptible to damage. They are therefore suitable for processing materials with small amounts of impurities. However, their crushing force is relatively gentle, resulting in slightly less uniform particle size than a hammer mill. Furthermore, their chains are prone to wear, making them less efficient at processing hard materials. Furthermore, chain mills have a simpler structure and lower maintenance costs.
What safety precautions should be taken when operating a chain mill?
Operational precautions:
① Before starting the machine, check for foreign objects in the crushing chamber and for loose or broken chains. Ensure all components are functioning properly before restarting.
② While the machine is running, do not open the cover or reach into the crushing chamber to prevent the chain from being thrown out or material from splashing and injuring anyone.
③ Feed the material evenly and continuously to avoid overloading caused by excessive material being fed at once.
④ If the machine makes unusual noises, vibrates violently, or emits smoke, immediately shut down the machine, disconnect the power cord, inspect, and troubleshoot the problem before restarting.
⑤ After operation, wait until the machine has completely stopped before cleaning any remaining material and inspecting the components.
What are the common malfunctions of chain crushers? How can they be resolved?
Chain breakage or wear: This is often caused by long-term processing of hard materials, excessive chain tension, or material fatigue. Solution: Replace worn or broken chains and use high-strength, wear-resistant chains. Adjust the chain tension to the appropriate level to avoid processing hard materials that exceed the machine's capacity.
Screen clog: This may be caused by high material moisture, excessively fine particle size requirements, or a damaged screen. Reduce material humidity, replace a screen with a larger mesh size, clean any blockages, and replace damaged screens promptly.
Motor overheating or overload: This is usually caused by excessive feed, unstable voltage, or damaged motor bearings. Reduce the feed rate, check the power supply voltage, replace damaged bearings, and install an overload protection device if necessary.
