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D201U
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D201U

D201U is a macroporous strongly basic anion exchange resin with a polystyrene skeleton, containing -N(CH3)3, equivalent to a solid strong base. It has excellent resistance to physical abrasion and chemical penetration, as well as good silicon removal performance. It is mainly used in hydrometallurgy and is suitable for uranium extraction.

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  • 1. Product Introduction:

    D201 U is a macroporous strong base anion exchange resin with a polystyrene skeleton, containing -N( CH3 ) 3 , equivalent to a solid strong base. It has excellent resistance to physical abrasion and chemical penetration, as well as good silicon removal performance. Mainly used in hydrometallurgy, suitable for uranium extraction.

     

    2. Performance Indicators:

    Appearance

    Light yellow transparent beads

    Strong base group capacity

    ≥3.7 mmol/g

    Volume exchange capacity

    ≥1.2 mmol/ml

    Moisture content

    50%~60%

    Wet true density

    1.06~1.10 g/ml

    Wet apparent density

    0.65~0.73 g/ml

    Particle size range

    0.7~1.6 mm

    Uniformity coefficient

    ≤1.6

    Abrasion-resistant spherical bead rate

    ≥90%

     

    3. Reference Operating Conditions:

    Maximum operating temperature

    OH 40°C, Cl 100°C

    Resin bed height

    1~3 m

    Operating flow rate

    2~10 BV/h

    Backwash flow rate

    4~10 BV/h

    Regeneration (desorption) flow rate

    1~2 BV/h

    Regenerant dosage

    2 BV 3~5% HCl, 2 BV 2~4% NaOH

     

    4. Product Applications:

    Mainly used in hydrometallurgy, especially suitable for uranium extraction.

     

    5. Precautions:

    1. Transportation and storage of the product:

    The product should be stored wet, preferably at temperatures above 0°C; for long-term storage, it can be sealed or immersed in 5% the above saline solution; during transportation, anti-freeze measures are essential, and heavy objects should not be placed on the resin to prevent crushing.

    2. Resin pretreatment:

    Generally, alkali -water - acid - water treatment in one cycle is required; for strict requirements, three cycles should be performed, finally treating the resin into the required ionic form.

    3. Resin loading:

    Consider the resin's swelling rate during phase transition, reserve enough space to prevent overflow and ensure appropriate liquid level; the column diameter ratio should be within a reasonable range to avoid channeling; use wet loading or backwash to remove air bubbles inside the resin bed.

    4. Before the liquid enters the resin column, it should undergo flocculation, filtration, or sand filtration to ensure no suspended solids, preventing blockage of resin pores.

      5. Resin unused in the column for a long time must be cleaned and removed for storage, or immersed in saline within a salt-resistant medium, keeping the surface from drying out. Periodic backwashing of the resin is also necessary to loosen it and prevent caking and spoilage.

D201U


D201U is a macroporous strongly basic anion exchange resin with a polystyrene skeleton, containing -N(CH3)3, equivalent to a solid strong base. It has excellent resistance to physical abrasion and chemical penetration, as well as good silicon removal performance. It is mainly used in hydrometallurgy and is suitable for uranium extraction.

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