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| Sulphuric Acid on the WebTM | Technical Manual | DKL Engineering, Inc. |
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Acid Plant Database March 28, 2011
| Owner | Codelco |
|
| Location |
Las Ventanas Chile |
|
| Background |
Formerly - Empresa Nacional de Mineria - ENAMI |
|
| Website | www.codelco.cl | |
| Plant | Las Ventanas | |
| Coordinates | 32º 45' 42" S, 71º 28' 49" W | |
| Type of Plant | Metallugical | |
| Gas Source | Copper | |
| Plant Capacity | 1637 MTPD | |
| SA/DA | 3/1 DA | |
| Status | Operating | |
| Year Built | 1989 | |
| Technology | Hugo Petersen | |
| Contractor | MAN Ferrostaal AG, Essen | |
| Remarks | Approximate Cost: US$45 million | |
| Pictures | 
 |
|
| General | The
initiative of transferring the property of the Ventanas smelter from Enami
to Codelco was agreed upon by Government authorities with both companies and
its unions, requiring the enactment of Law 19.993 allowing the transfer. The Ventanas division is located in Ventanas, Puchuncaví district, 164 kilometers from Santiago and 50 kilometers from Viña del Mar, in the northern sector of the Valparaíso province. Ventanas’ 2006 production reached 376,005 metric tons of electrolytic copper. At the same time, due to the processing of anodic sludge in the metals plant refinery, 150,952 kilograms of silver and 5,649 kilograms of gold were obtained, while the acid plant produced 351,537 tons of sulfuric acid. Ventanas’ concentrate production capacity averaged 445 thousand dry metric tons for the year 2006. |
|
| References | - | |
| News | March 28, 2011
- Bnamericas reported that
Chilean state copper producer Codelco resumed operations at its Ventanas
division smelter plant after a sulfur dioxide leak forced the company to
suspend activities on March 23rd 2011.
Mr Diego Hernández CEO of Codelco said that "The incident is already solved.
Everything is under control and the plant has resumed normal operations. As
soon as management found out about the emissions, we decided to stop the
furnace at the plant and worked on making sure the problem was solved before
starting operations again." Students and teachers from the adjacent La Greda school suffered
respiratory problems and headaches following the release of the smelter gas
and were taken to a nearby health center for observation. A recent report by
health authorities said La Greda is the most contaminated school in Chile.
Significant amounts of arsenic and cadmium among others were found in the
soil at the institution. Located in
central region V, the school is in the same district as the Ventanas
smelting and refinery complex, two thermoelectric power plants owned by
local generator AES Gener and several other industrial facilities. As a
result of the high levels of contamination detected and in the aftermath of
the most recent emergency, the government has decided to move the school and
has asked the companies operating in the zone to help with the relocation.
Mr Hernández said that Codelco is more than willing to help with mitigation
measures such as the relocation of the school. The CEO and representatives
from region V's industrial association Asiver were scheduled to meet with
environment minister María Ignacia Benítez to discuss and coordinate a plan
of action. He also announced plans
to improve environmental conditions at the Ventanas complex which will be
developed within the next 12 to 18 months. These include the construction of
new, sealed conveyor belts and stockpiling facilities for copper
concentrates to avoid dust contamination. The release of sulfur dioxide was
a one-time incident. The main environmental problem is related to dust
contamination which happens when copper concentrates are blown around by the
wind. Mr Hernández also highlighted
advances made over the last 16 years to reduce contamination in the zone.
Current SO2 and PM10 emissions at the plant are 13% and 12% of the levels
registered in 1994.
Meanwhile, a group of environmental activists has submitted a legal
action before region V's appeals court requesting the closure of the plant
until authorities can confirm that the company has taken all the necessary
measures to prevent a new sulfur dioxide leak.
Former plant workers also filed a lawsuit on Friday claiming that 28 of
their colleagues died due to exposure to smelter gas emissions while working
at the facility. www.bnamericas.com GEA Bischoff received the order for 2 wet gas electrostatic precipitators (WESP) from CODELCO in Chile. CODELCO is the biggest producer of copper in the world. In the last 30 years GEA Bischoff has supplied different kind of gas cleaning equipment to CODELCO, among others 40 WESPs. The new precipitators will be installed in CODELCO’s sulphuric acid plant in Las Ventanas. |
|
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
