The circular stacker-reclaimer is a continuous stacker-reclaimer installed in a spherical material shed, which uses a cantilever stacker and a scraper reclaimer that can rotate along a fixed central column to stack and reclaim bulk materials respectively. It is also called a "top-pile side-reclaimer".
The circular stacker-reclaimer is one of the large equipment commonly used in cement plants. It can complete the stacking and mixing and reclaiming of limestone simultaneously or separately, and plays an important role in pre-homogenizing limestone, stabilizing kiln conditions, and ensuring the quality of clinker.
The circular stacker-reclaimer's workplace is in a closed spherical material shed (or spherical silo), which can solve the problems of loss and scattering of materials caused by wind, rain and other climate influences during the stacking and reclaiming process. The circular stacker-reclaimer is widely used in material storage and transportation systems in industries such as electricity, building materials, chemicals, mining, docks, and grain.
Structural composition of circular stacker-reclaimer
The circular stacker-reclaimer is placed in a circular steel structure shed. It consists of three parts: stacker, reclaimer and central column. Stacking and reclaiming are two independent and non-interfering systems, and can perform stacking and reclaiming operations at the same time.
The stacker is mainly composed of cantilever frame, cantilever conveyor, slewing bearing, counterweight box, drive device and other parts. For the arm with pitching requirements, a hydraulic variable mechanism needs to be added;
The reclaimer is composed of scraper arm, chain scraper, tower, hoisting mechanism, drive device and other parts. For the reclaimer with material mixing requirements, a loosening rake mechanism needs to be added.
Operation process of circular stacker-reclaimer
Stacking operation process: The material is transported from the outside of the silo to the spherical silo by the trestle conveyor, transferred to the arm conveyor of the stacker after top unloading, and then fixed-point stacking is performed by rotating and pitching the cantilever frame.
Reclaiming process: The scraper of the reclaimer is driven by the chain to scrape the material toward the center column. A center drop hopper is provided at the bottom of the center column. The material is transferred to the discharge conveyor below the center drop hopper, and then the discharge conveyor sends the material out of the silo. The material can also be sent out of the silo by pushing the coal to the emergency hopper by a vehicle.