bazalt melting furnac in china

Basalt Melting Furnaces and Crushing Equipment in China’s Aggregate Industry

The砂石骨料 (aggregate) industry in China has experienced rapid growth due to urbanization and infrastructure development. Basalt, a common volcanic rock, is widely used for high-strength concrete and road construction due to its durability. To process basalt efficiently, specialized crushing and sand-making equipment—along with melting furnaces for advanced applications—play a critical role.

Industry Background

China’s demand for high-quality aggregates has driven innovations in crushing technology. Basalt’s hardness (Mohs 6–7) requires robust equipment like jaw crushers for primary crushing, cone crushers for secondary reduction, and vertical shaft impactors (VSI) for shaping artificial sand. Meanwhile, basalt melting furnaces are employed in niche applications such as fiber production or slag conditioning.

Core Equipment Overview

1. Jaw Crushers: Ideal for coarse crushing with high throughput (e.g., PE600×900 model).
2. Cone Crushers: Multi-cylinder hydraulic designs (e.g., HPT300) ensure fine output (<30mm).
3. VSI Crushers: Optimize particle shape for mechanized sand (e.g., 5X1145 model).
4. Melting Furnaces: Electric arc or induction furnaces melt basalt at ~1,500°C for industrial uses.

FAQ

  • Q: How to reduce wear in basalt crushing?

    • A: Use tungsten carbide liners and maintain proper feed size (<85% of crusher inlet).

  • Q: Can basalt replace river sand entirely?

A: Yes, after proper grading and dust control via wet processing or air classifiers.

Engineering Case

A Sichuan-based project processed 500tph of basalt using a three-stage crushing circuit (jaw + cone + VSI), achieving Grade II M-Sand with <3% flakiness. The plant integrated dust suppression and intelligent monitoring for efficiency.

For melting applications, a Shandong facility utilized an electric furnace to produce continuous basalt fibers (~9μm diameter) for insulation materials.

Conclusion

China’s aggregate industry continues to advance with tailored solutions for hard rocks like basalt—from crushing to high-temperature processing—ensuring sustainable resource utilization amid growing infrastructure demands.

Project