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1、Outotec ® Kaldo Furnacefor copper and lead The Outotec® Kaldo Furnace is the new third generation furnace of the Top Blown Rotary Converter, utilizing the experience from the old TBRCs in the steel and the non-ferrous industries. It is successfully used in the precious metals, copper and l

2、ead processing industries. It is a heavy duty furnace with smooth tilting and running in order to receive the best possible efficiency for melting and processing of a number of different materials. It can be controlled with high precision, for example when separating slag from the molten metal.The f

3、urnace is heated with an oxy-fuel burner for natural gas, light oil or heavy oil. It can also be equipped with a converting lance for air/oxygen or a lance for autogenous concentrate smelting with oxygen. The off-gas is handled by a gas duct, which can be provided with a ceramic lining and water coo

4、ling.A ventilated casing around the Kaldo Furnace enables a good working environment.The Kaldo Furnace is available in different sizes from 0.8-16m 3 working volume. Smaller furnaces are used for anode slimes and larger ones for copper and lead smelting.Today Outotec is the world leader in the desig

5、nand delivery of Kaldo Furnaces, with 15 reference installations worldwide.Copper scrap smeltingA wide range of copper scrap from dust to large pieces can be smelted, with copper content from 10% to 95%.The scrap is charged by a skip hoist directly to the furnace, which is in a ventilated casing. Sm

6、elting and refining are performed in a sequence in the same vessel.The impurities are oxidized to slag or dust. The final slag is very low in heavy metals. The end product is of blister quality copper.Lead concentrate smeltingDry lead concentrate is fed with oxygen into the furnace through a concent

7、rate burner lance. The heat of the reaction is normally adequate for the smelting of the material.After smelting, the process continues in the same vessel with a reduction step in order to make slag with low lead content.By means of a skip hoist, lead drosses from the lead refinery can be charged directly to thef