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              Over years, ENFI has carried out extensive research work and practice in the field of scientific and technological breakthrough of nonferrous metal mining, mineral processing and smelting. ENFI is the first to apply several new technologies and equipment in the projects, and has obtained several important scientific and technological achievements with independent intellectual property and created several core expertise and proprietary technologies.

              At present, ENFI owns nineteen core expertise technologies which cover the specialties of mining, mineral processing, heavy nonferrous metallurgy, rare metal metallurgy, new material, ESP, wastewater treatment, gas cleaning, electrics and equipment and listed below:

              1. Oxygen bottom-blowing smelting process

              2. Copper-nickel flash smelting process

              3.Oxygen-enriched air top-blowing smelting process

              4. Extraction technology by pressure leaching

              5.Fluid bed roasting of sulfide ore

              6. Polysilicon production process

              7. Mechanical and electrical integration technology for metallurgical furnace

              8. Waste heat recovery from smelting off-gas

              9. Tailings dam building

              10. Medical and dangerous waste disposal

              11. Key equipment and technology for sulfur removal in air control

              12. Integrated technology of deep mining

              13. Block caving

              14. Paste filling

              15. Urban sewage treatment

              16. SAG/ ball milling process

              17. Optimized control for mineral processing

              18. Special communication system for mining

              19. Electrical control system for shaft hoist