Introduction of Copper smelting “double flash” Process

The copper smelting “double flash” process is the most advanced copper smelting technology in the world. It has the characteristics of low energy consumption, more environmental protection, and high production capacity. After more than 20 years of continuous development and improvement, it has become a stable and reliable copper smelting process technology. Tianli Company has in-depth cooperation with major copper smelters at China and abroad, and has achieved industry-leading technical advantages in the fields of copper concentrate drying, concentrate nozzles, complete equipment supply and system design, and can provide domestic and foreign customers with corresponding equipment and technical services.

Three Major Service Sectors

1.Sector 1  Circular Tube Steam Dryer
The “double flash” smelting technology has strict requirements of the moisture content of copper concentrate powder (less than 0.3%). The purpose is to avoid the water vapor and liquid film covering the surface of the material, hindering the progress of the smelting reaction, and to avoid scarring on the copper concentrate powder nozzle which affects the service life of the nozzle. In addition, the copper concentrate powder in the drying section of the smelter has the characteristics of large processing capacity, large abrasion, and high corrosivity. Tianli Company’s circular tube steam dryer with independent intellectual property rights can fully adapt to the above material characteristics and achieve deep dehydration and stable operation.

1.1 Equipment Features
A.Structural features
The heat exchange tube group is replaceable, the steam draining configuration is reasonable, the material selection is diverse, with the automatic lubrication system, etc.
B.Applicable materials
1) Copper concentrate; 2) Gold ore tailing; 3) Zinc smelting slag; 4) Sponge copper; 5) Tungsten concentrate; 6) Scar removal sand
C.Energy saving features
The cylinder rolling and the material’s own weight are used to achieve uniform dehydration. The power consumption (system power consumption ~1.7kWh/t product) and steam consumption (0.2~0.23t steam/t product) and other indicators of per unit product have obvious energy-saving advantages.

1.2Equipment Specification Series
Tianli Company’s circular tube steam dryer have been standardized and serialized to meet the ore powder processing requirements of various production capacities.

2.Sector 2  Flash Furnace Concentrate Nozzle Technology and Supply

2.1 Introduction of Product
Flash smelting is an enhanced smelting process. The concentrate nozzle is a device located at the top of the reaction tower of the flash furnace. Dry concentrate, flux and process air are sprayed into the reaction tower through the concentrate nozzle. At the lower part of the concentrate nozzle, the concentrate is suspended in an umbrella shape and is fully mixed with the process wind. It ignites at a certain distance from the concentrate nozzle, burns rapidly, and is oxidized to form slag and metal.

2.2Working Principle
The concentrate nozzle sprays the dried mixed concentrate and oxygen-rich air into the flash furnace reaction tower at a certain ratio at the same time, and forms uniform umbrella-shaped suspension. The concentrate particles are fully contacted with the oxygen in the process air, and during the reaction, a series of metallurgical reactions are completed in the high-temperature oxidizing atmosphere in the tower.

2.3Performance Characteristics
It has the characteristics of simple structure, low flue dust rate, high input, high oxygen-rich smelting, high efficiency, less erosion of the inner wall of the reaction tower, good working conditions, and energy saving.

2.4Applicable Materials
Used to smelt copper concentrate, nickel concentrate and other non-ferrous metal ore powder.

3.Sector 3  Drying Section Complete Equipment
Tianli Company has complete technical reserves, processing capabilities and relevant references in the copper smelting industry. It can provide complete sets of drying system equipment, including conveying equipment, ventilation and dust removal equipment, steam draining systems, etc., to meet international standards.