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Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.

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Sulphuric Acid on the Web

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Sulphuric Acid Plant Specifications
 

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Acid Plant Database October 9, 2010

Owner Molibdenos y Metales S.A. (Molymet)

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Location Nos
Chile
Background -
Website www.molymet.cl
Plant

Nos Plant
Plant No. 1 Plant No. 2
Coordinates* 33° 37' 59" S, 70° 42' 2" W (Site)
Type of Plant Metallurgical
Wet-Gas Sulphuric Acid (WSA)		 Metallurgical
Wet-Gas Sulphuric Acid (WSA)
Gas Source Molybdenum Roaster Molybdenum Roaster
Plant Capacity 104 MTPD
Gas Flow: 40,000 Nm3/h
SO2: 2.0 to 2.4%		 170 MTPD
Gas Flow: 60,000 Nm3/h
SO2: 1.4 to 3.75%
SA/DA 1 SA
Conversion: 96%		 SA
Emissions SO3: < 15 ppmv -
Status Operating Operating
Year Built 1993 2007
Technology Haldor Topsøe Haldor Topsøe
Contractor - -
Remarks Energy Consumption: 80 kWh/h
CW Consumption: 40 m3/h		 CW Consumption: 57 m3/h
MOLYMET roasts molybdenum concentrates to produce technical molybdenum oxide, molybdenum oxide briquettes, ferromolybdenum, high purity molybdenum chemicals and all the rhenium products. Yearly roasting capacity at this location is 46 million pounds of molybdenum contained in concentrates (approximately 43,000 MT of concentrates per year), distributed in three roaster furnaces.
Output gases from the furnaces are cleaned in a scrubbing plant and then converted to sulfuric acid, which is sold in the domestic market. These two plants are an important part of MOLYMET's efforts in taking care of the environment.
This complex is also equipped with a leaching plant, which allows copper removal from the products. The copper is then recovered at an EW plant as high quality copper cathodes.
Pictures Molibdenos y Metales - 1.jpg (201758 bytes)   Molibdenos y Metales - 2.jpg (14324 bytes)  Molibdenos-y-Metales-3.bmp (1648386 bytes)
General MOLYMET, a shareholder-owned Chilean corporation listed on the Santiago Stock exchange, is processing molybdenum concentrates since 1964. The Corporation has production facilities in Chile, Mexico, Belgium and Germany.
Molybdenum concentrates are treated at the plants for the production of technical molybdic oxide, ferromolybdenum, high purity molybdenum chemicals and molybdenum metal powders. These products are supplied to the steel, catalysts and specialty metal manufacturing industries worldwide.
Rhenium is recovered as a by-product of processing molybdenum concentrates and is further refined for use in turbine engine components and other industrial products.
References Laursen, J.K., Recovery of Sulphur in Off-Gases from Roasting of Molybdenum Sulphide, Sulfide Smelting 2002, pp. 143-153
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