The double-stage crusher, also known as the double-rotor screenless crusher. Is an industrial equipment that integrates efficient crushing capabilities with anti-clogging performance. It is widely used in fields such as mining, building material production. Metallurgical and chemical industries, as well as the recycling of construction waste. Its core design features a tandem structure with upper and lower dual rotors. After the material is initially crushed by the upper rotor. It is immediately subjected to secondary fine crushing by the high-speed hammers of the lower rotor. Creating a composite crushing mode of “hammer striking material and material impacting each other”. This results in uniform particle size of the discharged material. With over 90% of the finished products controlled below 3 millimeters, meeting high-precision requirements for applications like brick making and concrete aggregates.
Double-Stage Crusher: An Innovative Powerhouse in Industrial Crushing
This equipment adopts a groundbreaking screenless grate bottom design. Completely eliminating the clogging issues that traditional crushers often encounter when processing high-moisture materials (such as coal gangue, shale, and construction waste). It can operate stably even when the moisture content of the material reaches 15%–20%. High-chromium alloy wear-resistant hammers, combined with shift adjustment technology, enable single hammers to be flipped and reused multiple times. Extending their service life by more than three times and reducing maintenance costs by 40%. The hydraulic-operated casing design allows for quick, one-person maintenance, while the bidirectional rotation function ensures even wear between hammers and liners, reducing downtime frequency by 60%.
From small brick factories with an hourly output of 15 tons to large-scale mines with a capacity of 500 tons. The double-stage crusher has become a cost-effective alternative to the traditional two-stage process of “jaw crusher + impact crusher” due to its compact structure. Low energy consumption, and strong adaptability.
