ENFI SKS Lead & Copper Smelting Furnace

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Product Brief
Advantages & Features
Working Principle
Technical Parameters
Application Achievements
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Product Brief

SKS furnace process equipment and control system

SKS furnace process equipment and control system

SKS furnace is a proprietary new type metallurgical furnace independently developed by ENFI based on oxygen bottom-blowing smelting technology, and is also the only world class nonferrous metals smelting equipment ever developed domestically in China so far. This furnace is a type of non-water-cooling horizontal revolving furnace, where oxygen enriched air is directly blown into the melt by lance fitted at bottom of the furnace, inside of which the air has chemical reaction with the feed materials.
In the field of copper smelting, China ENFI has designed more than 20 plants using SKS furnace process equipment, with an annual concentrate throughput capacity of more than 10Mt/a. In the field of lead smelting, this process equipment is in the forefront of the industry, accounting for more than 80% of the lead smelting capacity in China. It is the preferred lead smelting process in China designated by nine organizations of China State Council jointly, and it is the most widely used lead smelting process equipment in the world.

Specification & Series：Tailored according to different processes.
Processing Capacity：Lead smelting (lead bullion): 3-25t/a
Copper smelting (copper concentrate): 5-150 104t/a
Application Fields：Scope of application: mainly used in copper smelting and lead smelting process.

SERVICE CALL+86 13521339794

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Online Remarks

enfi.cemsa@gmail.com

Advantages & Features

Lead smelting by SKS furnace:
The product has the advantages of strong adaptability of raw materials, low energy consumption, environment friendly, low failure rate, simple operation, less investment, etc. The recovery of valuable elements Au and Ag is greater than 99%, the service life of furnace lining is long, the actual service life of furnace is more than 3 years, and the system’s availability is more than 90%. More than 40 SKS furnaces designed or supplied by China ENFI have been put into production, which are distributed in many smelters at home and abroad.
Continuous copper smelting by SKS furnace:
The process equipment of bottom blowing continuous copper smelting technology has the advantages of low investment and construction cost, high metal recovery, high comprehensive utilization level of resources, low comprehensive energy consumption, less carbon emissions, and so on. It is one of the most advanced copper smelting processes in the world.
The smelting process can produce slag with a high Fe-Si ratio, and the quantity of treated feed materials and produced slag is relatively smaller compared with other plants of the same size; continuous converting is adopted, which has strong ability of impurities removal and can produce high-quality blister copper; gravity flow is employed to avid copper matte transfer and the compact plant arrangement can realize clean production; the total recovery of copper can reach above 98.5%.

Working Principle

Lead smelting: The charge composed of lead concentrate and flux undergoes oxygen bottom-blowing smelting in the SKS furnace to produce primary lead bullion, and the molten oxidized lead slag is added to the RSKS furnace through hot slag chute for reduction smelting to produce secondary lead bullion and slag. Copper smelting: Copper-containing material and flux are mixed and pelletized before they are added to the SKS furnace to produce high-grade copper matte which is sent into SKS furnace or continuous converting furnace to produce blister copper.

The Application Achievements