Corrosion resistant fluidic devices for hydrometallurgical systems

A chromium oxide and barium glass coating addresses corrosion and erosion in hydrometallurgical systems, enhancing the durability and reliability of fluidic devices under extreme conditions.

WO2025235548A1 Publication Date: 2025-11-13JONES JONATHAN D +1
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Patent Information

Application Number
PCT/US2025/028040
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-06
Filing Date
2025-05-06
Publication Date
2025-11-13

AI Technical Summary

Technical Problem

Existing hydrometallurgical systems face significant corrosion and erosion issues in fluidic devices due to extreme conditions such as high temperatures, pressures, and acidic environments, leading to equipment failure, fluid loss, and safety risks.

Method used

A corrosion-resistant coating comprising chromium oxide and barium glass is applied to the contact surfaces of fluidic devices, with a ratio of chromium oxide to barium glass ranging from 60:40 to 98:20, and a thickness between 0.006 and 0.011 inches, designed to withstand up to 98% acidic solutions at 300°C and 725 psi for at least three years.

Benefits of technology

The coating effectively resists corrosion and erosion, ensuring the longevity and reliability of fluidic devices in hydrometallurgical systems, reducing downtime and maintaining system performance.

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Abstract

A hydrometallurgical system includes a feed inlet configured to receive a feed material containing a bound target metal, a leaching agent inlet configured to receive a leaching agent, a product outlet configured to discharge a slurry containing an extracted target metal, and one or more fluidic devices coupled between the feed inlet, the leaching agent inlet, and the product outlet to define a leaching flow path along which the leaching agent contacts the feed material to form a slurry product, wherein a first of the one or more fluidic devices includes an interior defined by a contact surface, wherein the contact surface includes a corrosion resistant coating containing chromium oxide and barium glass.
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