LS-Nikko - Onsan

Acid Plant Database August 21, 2022

Owner	LS-Nikko Copper Inc.
Location	70, Daejung-ri, Onsan-eup, Ulju-gun, Ulsan, 689-890, Korea
Background	1976 – Construction of Onsan plant begins 1979 – Production of anode copper begins 1979 – On-San Copper Smelting Co., Ltd. 1982 – Merger between On-San Copper Smelting and Korea Mining and Refining Co. Ltd. 1995 – Company name changed to LG Metals Corporation 1999 – Joint venture between LG Metals and Japan Korea Joint Smelting to form LS-Nikko Copper Inc.
Website	www.lsnikko.com
Plant	Onsan Smelter
Plant	Onsan I	Onsan II
Coordinates*	35° 26' 7" N, 129° 20' 45" E	35° 26' 5" N, 129° 20' 49" E
Type of Plant	Metallurgical	Metallurgical
Gas Source	Copper Outotec (Outokumpu) Flash Furnace	Copper Mitsubishi Process
Plant Capacity	-	13.2% SO₂
SA/DA	DA, 99.8% conversion	DA, 99.8% conversion
Status	-	-
Year Built	-	-
Technology	Outotec (Lurgi)	MECS
Contractor	-	-
Remarks	Products Sulphuric Acid: 1,360,000 MTPA Liquid SO₂ Plant: produced by deoxidizing refined SO₃ gas - 13,200 MTPA Liquid SO₃ Plant: produced by liquifying SO₃ from the acid plant - 33,000 MTPA High Purity Sulphuric Acid: 15,000 MTPA Gypsum Plant for cement from waste acid using CaCO₃ and Ca(OH)₂ Scrubbing Systems Desulphurization Plant I: smelter SO₂ scrubber using Mg(OH)₂ Desulphurization Plant II: acid plant tailgas SO₂ scrubber using CaCO₃ Desulphurization Plant III: acid plant tailgas SO₂ scrubber using Mg(OH)₂
Remarks	-	HRS System: 30 t/h steam
Pictures
Pictures
General	LS-Nikko Copper Inc. has operated an Outokumpu flash smelting furnace line with three P.S. converters at their Onsan Smelter since 1979, capable of producing 140,000 tons of copper from concentrate.
References	-
News	-

MTPD - Metric Tonne per Day STPD - Short Ton per Day
MTPA - Metric Tonne per Annum STPA - Short Ton per Annum
SA - Single Absorption
DA - Double Absorption

* Coordinates can be used to locate plant on Google Earth


Sulphuric Acid on the Web^TM	Technical Manual	DKL Engineering, Inc.