Method for reducing Copper Oxide in metallic COPPER (i) powdered Solid countercurrent feed gas comprising oxide Reduction that is Dry,Heated to a certain temperature and reduces with H2, the Metallic Copper is obtained enfri

摘要

A method for reducing pulverous copper (I) oxide into metallic copper in solid state by means of a reducing gas fed in a gas-tight furnace, which is equipped with an endless belt. The copper (I) oxide to be fed into the furnace is dried and heated, after which reduction is performed at a temperature between 600 and 900SUP0/SUPC at least partially by means of hydrogen and the metallic copper formed is cooled, after which the copper sinter is removed from the furnace. The apparatus comprises a copper (I) oxide feed device, a tubular gas-tight furnace in which circulates an endless belt. In addition, the apparatus includes equipment to cool, remove and discharge the reduced material from the belt as well as equipment for feeding the reduction gas into the discharge end of the furnace and removing it from the feed end of the furnace.