Skip to content

Mineral Processing – Brine Transportation

Reduction of material build-up in brine and brine/acid lines

Case Study Nº

8

Customer

SQM,Pedro Valvidia Mine
Chile

|

2010

Working Conditions

Ambient temperature -5°C to 0°C (32°F to 23°F). High level of material build-up and corrosion inside the pipe. Working pressure: 15 bar.

Pexgol Pipes

Pexgol and elbows 160×14.6, Class 15.

Application

Brine and acid transportation.

Lenght

12 meters.

Categories

Mineral Processing - Brine Transportation

The Challenge

As the brine water and acid solution was being transported by the initial HDPE pipeline, salts were sticking to the pipe walls, reducing the inner diameter. Due to the low ambient temperatures, deposits of calcium sulfate formed on the inner wall of the pipes and on the elbows.

The matter was critical since the problem forced complete halting of work at the plant as well as lot of maintenance and reduction of production capacity.

Pexgol Solution

SQM decided to replace its HDPE pipes and elbows with Pexgol’s. Due to the especially smooth internal surface of Pexgol’s pipes and elbows, the replacement of HDPE pipes with Pexgol eliminated the problem of chemical deposits. This resulted in fewer work interruptions and improved production capacity.

The production and transportation of Pexgol’s pipes in coils also reduces the number of joints and possibility of clogging. As a result, it reduced maintenance costs and brought the end of frequent forced halts in the work processes at the plant.

The original mean time between failures (MTBF) of the HDPE pipes was one month. Since changing to Pexgol in 2010, no sign of failure has been detected.

Related Case Studies

The Robust & Flexible Answer to Constantly Changing Mine Surfaces.

Evolving Mine Operations with Pexgol Piping

Peña Colorada
Mexico

 | 

2023
Pexgol’s chemical resistance and flexibility outperform HDPE in demanding leach pad operations.

Greater Efficiency and Safety in Leaching with Pexgol Pipes

Barrick Gold Corp.
Argentina

 | 

2025
A 225 mm Pexgol pipeline designed for abrasive slurry containing 35% NaCl and KCl solids.

Pexgol Replaces Short-Lived HDPE in Coarse Tailings Service

Potash Mine
Canada

 | 

2026
Pexgol Pipe for the Transport of Fluorosilicic Acid.

Fluorosilicic Acid Transport

Phosphate Mine – ICL Rotem
Israel

 | 

1995
Transport of Muddy Water (Pome) witha High Content of Organic Load.

Transport of Muddy Water in a Palm Oil Processing Plant

La Gloria
Colombia

 | 

2020
An Outdoor Hydrant and Indoor Sprinklers were installed at Guyana Airport

Water Supply & Fire Extinguisher Line

Cheddi Jagan International Airport
Guyana

 | 

2018