ZeCor-Z welding and acid plant maintenance
ZeCor-Z welding from 2 to 16 inches, catalyst replacement, repair of FRP equipment, and fabrication and installation of ZeCor and FRP piping at the acid plant of the Chuquicamata smelter. Workforce of 150 on double shifts.
The acid plant converts the sulfur dioxide in the smelter off-gases into sulfuric acid. Its lines handle concentrated acid and are built with special materials: ZeCor, an alloy developed to resist sulfuric acid corrosion, and FRP, fiberglass-reinforced plastic. LTF performed ZeCor-Z welding in diameters of 2, 4, 6, 8, 10, 12, 14 and 16 inches, and fabricated and installed ZeCor and FRP piping.
Maintenance included catalyst replacement, with the catalyst removed and replaced in bulk bags like those seen in the record, and repair of FRP equipment. The project was carried out with 150 people on a double-shift system.
Scope delivered.
What LTF delivered on this project, item by item. The photo follows each item as you scroll.
- 01
ZeCor-Z welding in 2, 4, 6, 8, 10, 12, 14 and 16 inch diameters
ZeCor is an alloy developed to resist corrosion from the concentrated sulfuric acid the plant’s lines handle. LTF welded ZeCor-Z in eight diameters.
- 02
Catalyst replacement
The catalyst was removed and replaced in bulk bags, like those seen in the project record.
- 03
Repair of FRP equipment
FRP, fiberglass-reinforced plastic, is one of the special materials the plant is built with to handle concentrated acid.
- 04
Fabrication and installation of ZeCor and FRP piping
The lines were fabricated and installed in ZeCor and FRP, with sections lifted by crane and installed from scaffolding.
- 05
Workforce of 150 on double shifts
The maintenance was carried out by 150 people on a double-shift system, with work at the plant by day and by night.
Project record.
Photos taken on site. Tap any image to see it in full, zoom in and browse all 17 from the project.
Acid plant, Chuquicamata smelter.
Site context
Acid plants are the centerpiece of compliance with Supreme Decree No. 28 of 2013, which requires smelters to capture and fix at least 95% of the sulfur entering the process. The captured sulfur leaves the smelter as sulfuric acid, which the mining industry itself uses in its leaching processes.
LTF Montajes Industriales · +56 9 9431 6903 · [email protected] · ltfmontajes.cl
Fabrication and maintenance of dryer 6 coils
Codelco, Chuquicamata Division · Chuquicamata smelter, Calama View the sheet
Project index
12 project sheets for Codelco- 01 Boiler tube banks for the Chuquicamata smelter Chuquicamata smelter 2025
- 02 Crane maintenance and rail replacement at the Potrerillos smelter Potrerillos smelter 2025
- 03 Boiler banks, wall panels and boiler maintenance Smelter and thermoelectric plant 2020 and 2021
- 04 Flash Furnace cooling system Chuquicamata smelter 2023
- 05 Replacement of casting wheels 3 and 4 Chuquicamata smelter 2021 and 2023
- 06 Flash Furnace ancillary works contract Chuquicamata smelter 2021
- 07 ZeCor-Z welding and acid plant maintenance Acid plant This sheet
- 08 Fabrication and maintenance of dryer 6 coils Chuquicamata smelter 2024
- 09 Flash Furnace and boiler cooling, 18 inch line Chuquicamata smelter
- 10 Crane rail replacement at the Chuquicamata smelter Chuquicamata smelter 2021
- 11 Oxygen lines of 16, 20 and 24 inches Chuquicamata smelter 2020
- 12 Electrostatic precipitator maintenance Chuquicamata and Ministro Hales
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