D301G Macroporous styrene series weakly alkaline anion exchange resin
1. Description
This is a kind of anion exchange resin which has tertiary amine groups in styrene-divinylbenzene copolymer. It can remove effectively organic coloring matters, inorganic acids and silicates from acidic and nearly neutral medium, with its weak alkalinity. It also can adsorb the big-sized impurities and be used in non-aqueous solution. This resin has good properties, such as highly-efficient regeneration capability, large exchange capacity, strong contamination resistance, excellent physical strength etc.
2.Typical Physical and Chemical Properties:
①Polymer Matrix Structure：Crosslinked Polystyrene Divinylbenzene
②Physical Form and Appearance：Ivory opaque spherical particle
③Functional Groups：R-N(CH3)2
④Ionic Form ,as shipped：Free Base
⑤Total Capacity, Free Base form, wet, volumetric：≥1.40eq/l min
⑥Moisture Retention, FB  form：50-60%
⑦Particle Size Range：0.6mm-1.6mm
⑧<0.6mm (max.)： 5%
⑨Uniformity Coefficient (max.)： 1.6
⑩effective size：≥0.6mm
⑾Reversible Swelling   CL-→ FB(max.)：20-25%
⑿Shipping Weight (approx.)：640 -710g/l
⒀Specific Gravity, moist FB Form：1.09
⒁pH Range, Stability：1 - 9
3.S ested Operating Condition
①Maximum Temperature： Free Base Form 100°C (212oF) max.
②Backwash Rate： 50 to 75% Bed Expansion
③Regenerant Concentration：2-4% NaOH
④Regenerant  dosage：NaOH volume:resin volume =3:1
⑤Regenerant Flow Rate：2 to 4 BV/h
⑥Regenerant  contact Time：At least 40 minutes
⑦Service Flow Rate：10-25m/h
4.Applications
It is mainly used in hydrometallurgy, extracting the gold from the ore slurry and manufacturing pure water and high purity water.