Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Lanxes-s LEWATIT NM 91 Ion Exchange Resin

Lanxes-s LEWATIT NM 91 is a high-performance macroporous weakly acidic cation exchange resin from Lanxes-s’s LEWATIT series. Featuring acrylic polymer backbone with carboxylic functional groups, it excels in selective metal ion removal, softening, and nickel/cobalt recovery. Offers rapid kinetics, high capacity, and excellent chemical stability in acidic environments.
  • lanxes s lewatit nm 91 ion exchange resin_c9d103b5
  • lanxes s lewatit nm 91 ion exchange resin_c9d103b5

Features Of Lanxes-s LEWATIT NM 91 Ion Exchange Resin

  1. Highly selective for nickel (Ni²⁺) and cobalt (Co²⁺) ions in complex multi-metal leach solutions.

  2. Exceptional chemical and osmotic stability in acidic environments, including sulfate and chloride media.

  3. Optimized kinetic performance with rapid adsorption/desorption cycles for efficient metal recovery operations.

  4. Low fines generation and excellent physical integrity after repeated regeneration cycles.

  5. Designed for high-capacity operation with minimal pressure drop in large-scale fixed-bed columns.

Typical Applications Of Lanxes-s LEWATIT NM 91 Ion Exchange Resin

  1. Primary recovery of nickel and cobalt from laterite ore hydrometallurgical leachates.

  2. Purification of electrolyte solutions prior to electrowinning in battery-grade metal production.

  3. Removal of trace transition metals from spent lithium-ion battery leach liquors.

  4. Selective separation of Ni/Co from mixed-metal streams in recycling and secondary raw material processing.

Specifications Of Lanxes-s LEWATIT NM 91 Ion Exchange Resin

Chemical TypeChelating polyacrylic resin with iminodiacetate functional groups
Product FormMoist, spherical beads
AppearanceLight yellow to amber, uniform spherical particles
Functional GroupIminodiacetic acid (IDA)
Ion FormSodium form (Na⁺), ready for acid conversion
Particle Size Range0.3–1.2 mm (standard grade)
Moisture ContentApprox. 48–52% (as shipped)
Maximum Operating Temperature60 °C


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