Project Background
Driven by large-scale infrastructure investment in Xinjiang, the demand for high-quality crushed stone and manufactured sand continues to grow rapidly across highway, railway, water conservancy, and residential construction projects.
Granite is a high-hardness, high-density igneous rock with excellent compressive strength. After professional crushing and shaping, it produces cubical, high-strength aggregates that meet the highest standards for road base, concrete, and engineered construction.
Considering Xinjiang’s abundant granite reserves, extreme material hardness, remote site conditions, and dusty operating environments, Cronus engineered a heavy-duty 300-400t/h granite crushing line. This solution is also fully compatible with other high-hardness rocks such as basalt, quartzite, and gabbro.
Production Line Overview & Parameters
| Parameter Item | Technical Specification |
|---|---|
| Rated Capacity | 300–400 tons per hour |
| Applicable Materials | Granite, Basalt, Quartzite, other high-hardness stone |
| Core Machine Configuration | Vibrating Feeder, Jaw Crusher, Roll / Single-stage Fine Crusher, Circular Vibrating Screen, Belt Conveyor System, Central PLC Control Cabinet |
| Final Products | Graded crushed aggregates, manufactured sand, highway/railway subgrade stone |
| Operation Feature | Full automatic PLC control, one-room centralized operation, low labor dependency |
This crushing system is specifically optimized for high abrasion resistance and continuous heavy-duty operation in harsh Xinjiang desert and mountain environments. The centralized PLC control system allows one-click startup, shutdown, and parameter adjustment, greatly improving site safety while cutting labor costs.
3. Complete Production Flow
The process adopts a classic closed-loop layout: Feeding → Primary Crushing → Fine Crushing → Screening → Sand Making (optional)
Feeding & Primary Crushing
Raw granite boulders are uniformly fed by a heavy-duty vibrating feeder into the primary jaw crusher. The feeder removes fine soil and dirt in advance, prevents overloading, and ensures stable, choke-free feeding for the jaw crusher — critical for long-term stable operation in dusty quarry sites.
Secondary Fine Crushing
Pre-crushed stone is conveyed to a double-roll crusher or single-stage impact fine crusher for secondary shaping. This stage controls the final flakiness index, particle cubicity, and overall gradation, directly determining the quality of finished construction aggregates.
Multi-layer Screening & Grading
After fine crushing, materials are classified by a high-efficiency circular vibrating screen. The screen configuration is fully customizable:
Single deck: Output one single-size finished stone
Double deck: Produce two graded aggregate sizes simultaneously
Multi-deck: Custom multi-specification grading for highway standard materials
Optional Sand Making & Washing
For projects requiring manufactured sand, a fine-mesh screening module and sand washer are added. Excess fines are separated, washed to remove silt and clay, and processed into clean, high-quality manufactured sand compliant with national concrete aggregate standards.
Core Equipment Technical Advantages
Heavy-Duty Jaw Crusher (Primary Stage)
Engineered for extreme hardness granite, this jaw crusher features upgraded high-manganese jaw plates and reinforced frame structure. Compared with standard models, it delivers 35% longer wear part lifespan, reduces downtime, and lowers frequent replacement costs for remote Xinjiang quarry operations.
Multi-Cylinder Hydraulic Cone Crusher (Optional Upgrade)
For users pursuing higher cubicity and lower wear consumption, the multi-cylinder hydraulic cone crusher is available as an alternative fine crushing unit. It provides tramp iron release protection, automatic CSS adjustment, and stable performance under continuous high-load crushing of basalt and granite.
High-Efficiency Vertical Shaft Sand Maker
The impact-type sand maker supports dual working modes: Rock-on-Rock andRock-on-Iron. It produces well-graded, cubical manufactured sand with minimal needle-like particles. Optimized impeller and liner design cuts overall maintenance costs by approximately 30%.
Local Xinjiang Project Case
Cronus conducted on-site material testing for local Xinjiang granite samples and delivered a fully customized 350t/h complete crushing line for a local quarry client.
Project Result: The line has operated continuously under harsh high-temperature and windy desert conditions with extremely low failure rates. Consistent cubical aggregate quality qualified the product for local highway bidding projects, bringing stable and long-term economic returns for the customer.
