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201×7

201×7 is a gel-type strongly basic anion exchange resin with a polystyrene skeleton, containing -N(CH3)3, equivalent to a solid strong base. It has a high total exchange capacity and good mechanical strength. It is mainly used for pure water preparation, wastewater treatment, biochemical products, and the extraction of gold, silver, tungsten, molybdenum, and other metals in hydrometallurgy.

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  • 1. Product Introduction:

    201× 7 It is a gel-type strongly basic anion exchange resin with a polystyrene skeleton, containing -N ( CH3 ) 3 equivalent to solid strong base. It has a high total exchange capacity and good mechanical strength. Mainly used for pure water preparation, wastewater treatment, biochemical products, and extraction of gold, silver, tungsten, molybdenum, etc. in hydrometallurgy.

    Corresponding foreign brands: Amberlite IRA-400, AB-17, Diaion SA-10A

     

    2. Performance Indicators:

    Appearance

    White to light yellow transparent beads

    Maximum Regeneration Capacity

    ≥3.8 mmol/g

    Strong Base Group Capacity

    ≥3.5 mmol/g

    Volume Exchange Capacity

    ≥1.35 mmol/ml

    Moisture Content

    42%~48%

    Wet True Density

    1.07~1.10 g/ml

    Wet Apparent Density

    0.67~0.73 g/ml

    Particle Size Range

    0.315~1.25 mm

    Effective Particle Size

    0.40-0.70 mm

    Uniformity Coefficient

    ≤1.6

    Sphericity Rate

    ≥60%

     

    3. Reference Operating Conditions:

    Maximum Operating Temperature

    OH 40℃, Cl 100℃

    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 for pure water preparation, wastewater treatment, biochemical products, and extraction of gold, silver, tungsten, and molybdenum in hydrometallurgy.

     

    5. Precautions:

      1. Transportation and Storage of the Product:

      Store the product in a wet state, preferably above 0 degrees Celsius; if unused for a long time, it can be sealed or stored in brine with more than 5% salt; during transportation, mainly prevent freezing, and do not place heavy objects on the resin to avoid crushing. 2. Resin Pretreatment:

      Generally, an alkali-water-acid-water process can be used, with strict requirements for three cycles, finally treating to the required ion form.

      3. Resin Loading: Consider the resin's swelling rate during phase change, reserve enough space to prevent overflow and ensure appropriate liquid level; the column diameter ratio should be reasonable to avoid channeling; use wet loading or backwash to remove air bubbles inside the resin layer.

      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 not used for a long time in the column should be cleaned and removed for storage, or stored in saltwater in a salt-resistant medium, keeping the surface from dehydration, and periodically backwashed to loosen the resin to prevent caking and spoilage.

      4.液体在进树脂柱之前,应经絮凝、过滤或沙滤等步骤,确保不含悬浮物,以免堵塞树脂孔道。

      5.柱内长期不用树脂须洗净后掏出保存,或者在抗盐介质内可加盐水,并且需要保持页面不可脱水,同时还需要不定期的反洗树脂,目的是松动树脂,以防结块报废。

201×7


201×7 is a gel-type strongly basic anion exchange resin with a polystyrene skeleton, containing -N(CH3)3, equivalent to a solid strong base. It has a high total exchange capacity and good mechanical strength. It is mainly used for pure water preparation, wastewater treatment, biochemical products, and the extraction of gold, silver, tungsten, molybdenum, and other metals in hydrometallurgy.

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