Equipment for Secondary Crushing of Oversized Lump Ore and Rock

Secondary and fine crushing of oversized rock and ore is an essential step in mining and aggregate production lines. Its main job is to take coarse-crushed rock sized between 200mm and 500mm and reduce it into uniform particles from 10mm to 100mm, ready for downstream grinding or sand making processes. Cone and impact crushers are the most commonly used machines for this stage. Leveraging solid technical know-how, Shibang Group builds reliable crushing solutions centered on HPT multi-cylinder cone crushers and HST single-cylinder cone crushers, with CI5X impact crushers as supplementary units to handle rocks of varying hardness and production targets.

1. HPT Multi-Cylinder Hydraulic Cone Crusher | Best for Hard Rock

Built to crush extra-hard materials such as granite, basalt and iron ore, this model serves as the core equipment for secondary crushing. It works on interparticle crushing principle. The independent multi-cylinder hydraulic setup adjusts mantle stroke from 10mm to 30mm, and paired with fast spindle speed, it boosts output by 20% to 40%, with maximum hourly throughput hitting 1,450 tons.

We supply three liner profiles for medium, fine and ultra-fine crushing; users only need to swap liners to get different finished sizes. Built-in hydraulic tramp release and automatic cavity clearing stop uncrushable metal debris from damaging the machine and keep production running nonstop. Finished stones feature even grain shape and few flaky pieces, ideal for high-output hard rock projects at large mines.

2. HST Single-Cylinder Hydraulic Cone Crusher

Perfect for mid-to-soft rocks like limestone and river pebbles, this cone crusher features simple structure and easy daily maintenance. It accepts feed up to 560mm, with output ranging from 45t/h to 2,130t/h, matching medium and small-scale crushing plants.

Full hydraulic operation plus smart control system offers three working modes: manual setting, fixed discharge opening and constant power control. The system tracks machine load in real time and makes automatic adjustments to secure large reduction ratio and consistent output. Multiple crushing cavities support 2nd to 4th stage crushing tasks. Precision bearings plus positive-pressure dust seal cut component wear and extend service life, making it a cost-effective pick for small and mid-sized secondary crushing jobs.

3. CI5X Impact Crusher | Top Choice for Soft Rock & Aggregate Shaping

Designed for brittle raw materials including limestone and coal gangue, this machine does both crushing and particle shaping in one unit. Its heavy rotor with high rotational inertia hurls raw materials hard against impact plates for efficient size reduction, producing well-graded, neatly shaped finished aggregates.

All hydraulic controls allow quick discharge size adjustment and fast wear part replacement to cut service expenses. Feed size tops out at 300mm and production sits between 50t/h and 800t/h, widely used in soft rock secondary crushing and aggregate shaping work.

4. Supporting Auxiliary Machines

A closed-circuit crushing loop comes together with S5X vibrating screens and belt conveyors. Shibang’s S5X screen runs on elliptical vibration motion and uses high-opening-rate screen mesh to hit over 95% screening efficiency. Qualified finished material gets screened out directly, while oversize rock goes back for re-crushing to maximize raw material usage.