Oxygen Bottom-Blowing Copper Smelting Process (SKS/BBS) is a new bath smelting process independently researched and developed by ENFI/TOMINE. Oxygen-enriched process air is injected in a high velocity into the bath via lances positioned at the bottom of the rotary horizontal SKS/BBS furnace, so as to complete chemical reactions with concentrate. With unique kinetic conditions, the process is specially featured with wide adaptability to different feeds, high chemical reaction heat efficiency, low energy consumption, high metals recovery, high impurities removal efficiency, low capital cost, low operating cost and preferable environmental performance among other merits, thus making it rank among the world’s leading level. TOMINE has engineered 18 SKS/BBS smelters with concentrate throughput above 7000kt/a.
TOMINE has has provided universal engineering services from engineering test, project consulting, engineering design, EPC service to project supervision, etc. for more than one hundred of copper smelting compa- nies worldwide, making it the only one engineering corporation in the industry being capable of designing smart plants and providing such complete set of large equipment as metallurgical furnace and waste heat boiler, etc., as well as DCS.
TOMINE has rich engineering experience in comprehensive recovery from copper sulfide ore, copper oxide ore, complex copper-nickel mix ore and secondary copper materials, and has mastered multiple copper smelting technologies including flash smelting, top-blowing smelting, bottom-blowing smelting, side-blowing smelting, pressure leaching, roasting – leaching, etc. TOMINE has designed the world’s largest copper smelting operating lines by using top-blowing technology,flash technology and oxygen bottom-blowing technology, with the maximum concentrate throughput for single operating line reaching more than 1600kt/a.
Pyrometallurgical copper smelting is to make blister copper with 18% Cu concentrate with solvent into 99.99 Cathode copper
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