I. Project Background and Initial Operational Pain Points

A sand plant customer in Shandong Province is mainly engaged in producing manufactured sand from high-hardness granite. To control initial investment, the customer purchased a second-hand crushing unit last year.

However, problems emerged immediately after commissioning. The second-hand equipment suffered severe wear and high failure rates when processing granite, making shutdowns routine. Beyond rising parts and labor costs, the finished sand often had unstable particle size and excessive flakiness, failing to meet ready-mix plant standards. This severely constrained capacity and profitability. The recurring breakdowns made the customer realize that reliability is far more critical than initial cost in hard rock sand-making.

II. Equipment Selection: Hua Sheng Ming 1510 Hydraulic Roll Crusher

After on-site working condition consultations and comparisons of hard rock crushing cases, the customer decided this year to purchase the Hua Sheng Ming 1510 Hydraulic Roll Crusher, specifically optimized for the high hardness and strong abrasiveness of granite.

Granite Roll Crusher

The equipment utilizes the layer-compression crushing principle, relying on high-pressure roller compression for material fracturing, abandoning the high-speed impact mode to reduce impact wear on the machine from hard rock. The rollers are equipped with thickened high-wear-resistant alloy shells, suitable for long-term high-intensity abrasive wear from granite. The hydraulic roll gap adjustment system allows output particle size to be adjusted as needed, while the automatic tramp iron relief overload protection effectively prevents equipment damage from hard objects entering the crushing chamber.

III. On-Site Application Results

After commissioning, the equipment significantly resolved the various production issues previously caused by the second-hand machine. The production line can now operate continuously for extended periods, with unscheduled downtime for maintenance substantially reduced.

The sand produced by the compression crushing process exhibits well-shaped grains with a low flakiness index, effectively controlling over-crushing. The finished product features stable grading, meeting local construction aggregate standards.

The wear-resistant roller shells are well-suited to the highly abrasive granite conditions, extending the replacement cycles of wear parts and reducing consumable costs and maintenance labor. The hydraulic adjustment system allows convenient roll gap adjustments, enabling flexible switching between different finished sand specifications to accommodate varying customer order requirements.

Granite Sand Making Production Site

IV. Case Summary

This Shandong granite sand-making project is a highly representative example in hard rock processing scenarios. Under high-wear granite conditions, the inherent structural aging and component degradation of second-hand equipment are continuously amplified, with frequent breakdowns ultimately driving up total production costs.

The Hua Sheng Ming 1510 Hydraulic Roll Crusher is custom-developed for high-hardness rocks, balancing the three core requirements of stable production capacity, controllable output, and wear resistance. It provides a highly reliable fine crushing solution for sand making from highly abrasive materials such as granite and basalt.