david kapembwa plant controller kansanshi mining,direct to blister flash smelting technology invented by outotec.vast experience as process associate and plant controller for the electrically powered furnace both at the slag cleaning and cobalt recovery furnaces. part of the commissioning team of the direct to blister flash smelting -nchanga smelter in 2008 - chingola , zambia.copper smelting metallurgist mineral processing engineer,jan 13, 2021 the predominant copper process is reverberatory furnace smelting of sulfide concentrates to produce matte and slag, followed by treatment of the matte in converters to form blister copper. the offgases from the reverberatory furnace are usually not more than 2 percent so2, and of varying so2 content from the converters, precluding economic.
apr 09, 2010 modern copper smelters use processed copper ore fed into a flash furnace, typically fired by oxygen which produces blister copper, being further processed in a converter furnace. molten copper is poured from here into rectangular moulds, the resulting ingots subjected to electrolysis producing a metal of 99.9 purity. copper can be recycled indefinitely without the base metal being
copper processing is a complicated process that begins with mining of the ore (less than 1 copper) and ends with sheets of 99.99 pure copper called cathodes, which will ultimately be made into products for everyday use.the most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different
copper refining process. the copper refining process shown in fig. 2 includes the crushing unit, concentration unit, direct to blister smelting unit (pyrometallurgy pathway), acid plant, and hydrometallurgy unit. 3.3.1. crushing unit process flowsheet
mar 23, 2020 to mitigate possible environmental pollutions, the direct to blister (dtb) route is an important process for copper making because a single, so 2-concentrated stream can be produced.in this study, the ferrous-calcium silicate (fcs) slag system for the dtb process with a cao content of 15 wt pct was studied, as well as its equilibria with spinel, blister, and gas phases.
copper smelter plant metallurgist, michael carkeet, explains that without this step the skim travels with the blister copper to the next stage of the process where it
a commercial plant has been in operation since 1978 at glogow in poland, to smelt a low iron-sulfur, carbonaceous, comparatively high-copper concentrate directly to blister. direct smelting to blister is only practical where the levels ofpb, as, bi, etc., in the concentrate are low.
the matte produced by the flash smelting furnace is transferred to the converter furnace. oxygen-enriched air is blown into the converter furnace to oxidize the matte further to create blister copper with a grade of approximately 99. reaction in the converter. cu 2 sfes sio 2 o 2 cu 2feosio 2 so 2 reaction heat.
in this paper methods under development in cocop for optimisation of a copper smelter including plant-wide control and unit process advisory tools, are introduced and discussed. the main focus of the paper is in describing the development work relating to the
oct 01, 2003 instead of adopting the kofc system, a new outokumpudesigned smelter was commissioned in 1999 at olympic dam, south australia, to smelt 380,000 tpa of concentrate containing about 50 copper. this direct-to-blister process incorporates a single flash smelting furnace, an electric smelting furnace and two anode furnaces. 6.4.
direct-to-blister copper smelting is an important smelting process due to its short process, low energy consumption and environmental protection. this study attempts to use high-grade chalcocite as the raw material for direct-to-blister smelting to realize the production of blister in a single furnace. the issues and required conditions of the process are analyzed from the thermodynamics
copper smelting basics in early stages of the technology development, several pilot-scale flash smelting furnaces of different feed rates, typically between 0.1 and 1 mt/h, were built for detailed process chemistry and fluid flow purposes 2, 10-13, see fig. 1.
abstract the effectivity of present copper smelting technologies have their roots in industrial and laboratory-scale experience accumulated over the past decades. since early 60s, the tools for improving the processing conditions and smelting vessel design included scale modelling and manual computing of homogeneous multicomponent equilibria.
jun 19, 2021 what is copper smelting? copper smelting plants separate elemental copper from copper concentrates through multiple sulphide oxidizing stages. the considered smelting process includes a continuously functioning flash smelting furnace (fsf) and several pierce-smith converters operated in batches.
blister copper is produced from copper oxides or dead-roasted copper sulfides in a cyclic smelting process using a carbon reductant. in the first stage of the cycle, carbon reductant is added to the furnace charge in stoichiometric excess to form a copper-depleted slag and a molten black copper fraction. the slag is tapped, leaving black copper in the furnace, and a second charge containing
copper product usually ranges from white metal (cu 2 s), through semi-blister to blister copper. whether or not the flash smelting process is autogenous to any given product is determined by the grade of the unroasted sulfidic material, the amount of calcined material and
smelter. pt. smelting applies mitsubishi technology for copper smelting process. the mitsubishi process is copper continuous smelting and converting technology using three furnaces. the three furnaces are linked with covered launders, through which all the molten materials are continuously transferred by gravity. copper concentrate (cu 30, s
jun 11, 2019 the major developments have been the adoption of direct to blister in the 1970s and the development and application of continuous flash converting in cooperation with the kennecott smelter during the 1980s and 1990s, at the same time as the direct outotec nickel process was adopted for
a variation of the direct-to-blister flash smelting process is the kennecott-outokumpu flash converting process eliminating the peirce smith converters and molten material transportation in the converter aisle. outokumpu developed this process in collaboration with kennecott and the first plant was built by kennecott utah copper in usa in 1995.
nchanga copper smelter process concept at nchanga smelter the feed mixture isdirectly pr ocessed to blister copper in a flash smeltingfur- nace (dbf). for slag cleaning two-stage electric furnace process is applied. the smelter has concen-trate smelting capacity of 849 000 t/a with the copper content of 311 860 t cu/a.
the smelting process will include the use of direct to blister flash (dbf) smelting technology, wherein the copper concentrate will be processed by flash smelting to produce blister copper (98 cu). the produced blister copper will be transferred for anode furnace treatment, which refines and casts them as saleable anodes. the on-site smelter