Line-XD HP Element for Lithium-Brine

Summary

Product identification

The FilmTec™ LiNE-XD HP Element is a Nanofiltration (NF) membrane designed for lithium-brine purification.

Key features include:

• High monovalent-divalent ion selectivity for multivalent impurity removal from direct lithium extraction (DLE) brine stream prior to lithium concentration.
• State-of-the-art membrane chemistry to offer high lithium passage for typical chloride-rich Li-brine streams.
• Expertly designed and optimized membrane chemistry to enable a reliable and robust element lifetime.
• High productivity membrane allows for increased water and lithium recovery and/or reduced energy consumption.

Key applications:

• Lithium stream purification in chloride-rich brine mining from salt lake brine, geothermal brine, oilfield produced water, etc.
• Lithium stream purification in (modified) sulfate-rich brine extracted from surface clay, sub-surface clay, battery recycle stream, etc.

Operating limits

• Membrane Type: Nanofiltration Thin-Film Composite
• Maximum Operating Temperature: 113°F (45°C) (Note: Maximum temperature for continuous operation above pH 10 is 95°F (35°C).)
• Maximum Operating Pressure: 1,200 psi (83 bar)
• Maximum Pressure Drop Per Element: 15 psi (1.0 bar)
• Maximum Pressure Drop Per Pressure Vessel (Minimum 4 Elements): 50 psi (3.5 bar)
• pH Range Continuous Operation: 3 - 10
• pH Range Short-Term Cleaning (30 min.): 1 - 12
• Maximum Feed Flow: 75 gpm (17 m³/h)
• Maximum Feed Silt Density Index (SDI): SDI 5
• Free Chlorine Tolerance: < 0.1 ppm

Feed water

Exemplary performance conditions:

• Standard conditions for permeate flow and salt rejection: 2,000 ppm MgSO₄, 70 psi (4.8 bar), 77°F (25°C), pH 8, and 15% recovery.
• Single-element test for typical DLE NF feed stream: Mainly including LiCl, MgCl₂, and NaCl.
  • Temperature: 25°C
  • pH: 3.3
  • Membrane flux: 15 lmh
  • Recovery: 15%

Product water

Typical properties of the FilmTec™ LiNE-XD HP element:

• Active Area: 400 ft² (37 m²)
• Feed Spacer Thickness: 34 mil
• Permeate Flow Rate: 8,200 gpd (31 m³/d)
• Stabilized Salt Rejection: 99.2%
• Minimum Salt Rejection: 98.0%

Exemplary performance of Li-Mg separation showing cation concentration (mg/L) in feed/permeate:

• Mg: Feed 4,650 mg/L, Permeate 440 mg/L
• Li: Feed 710 mg/L, Permeate 180 mg/L

Mechanical / hydraulic

Element Dimensions:

• A: 40.0 inches (1,016 mm)
• B: 7.9 inches (201 mm)
• C (ID = Inner Diameter): 1.125 inches (29 mm)

A coupler part number 313198 with two 3-912 EPR O-rings (part number 151705) is supplied with each element.

Important General Information

• Elements must be kept moist at all times after initial wetting.
• Operation must follow guidelines in the FilmTec™ Reverse Osmosis / Nanofiltration Elements Operation Excellence and Limiting Conditions Tech Fact (Form No. 45-D04388-en).
• During prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution to prevent biological growth.
• The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
• Avoid static permeate-side backpressure at all times.
• Permeate obtained from the first hour of operation should be discarded.
• The use of this product does not necessarily guarantee the removal of cysts and pathogens from water; effective reduction depends on complete system design, operation, and maintenance.

Regulatory Note

This product may be subject to drinking water application restrictions in some countries; please check the application status before use and sale.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet