Magnesium Aluminosilicate
Product Series: Industrial Adsorbents
- Product at a Glance
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Description
- --Magnesium Aluminosilicate or Magnesium Aluminium Silicate is an amorphous porous material with a white solid particle appearance and excellent fluidity.
- --As an amphoteric adsorbent, it has been extensively used in the aftertreatment of polyether polyol to remove K+ (Na+ ) ion, acid, alkali, pigments, and odorous compounds containing sulfur and nitrogen atom.
Technical Information of Magnesium Aluminosilicate (JH100)
Product Properties Standard Specifications Appearance White, odorless, freely flowing granule or powder SiO2，% 50±4 MgO，% 16±4 Al2O3，% 16±4 Loss on Drying(105℃，2h)，% ≤8 pH(1% Suspension) 9-11 Cl- ，% ≤0.1 SO42- ，% ≤0.5 Packaging, Storage and Transportation
Package in the coated paper bag lined with soft plastic-film bag, net weight 20kg/bag. Arrange bulk transports according to the specific requirements. Keep in a dry, clean, cool warehouse. Pay attention to moisture and rain. Any unused product should be sealed after opening the bag.
Usage and Adsorption Process
In the polymerization reaction of polyether polyols, potassium hydroxide is commonly used as a catalyst. The potassium ions present in the crude polyether polyol produced after the completion of the polymerization reaction must undergo a series of post-treatment processes including hydrolysis, neutralization with phosphoric acid, adsorption with silicates (such as magnesium silicate, magnesium aluminosilicate, aluminosilicate, etc.), vacuum dehydration, and filtration for purification, ultimately yielding a polyether polyol product that meets the required specifications.
Place the crude polyether polyol into a refining kettle, and add 1% to 5% (w/w) of water to the kettle at a certain temperature (around 80°C). Thoroughly stir the mixture and neutralize the pH of the material to 4 to 6 using 85% phosphoric acid, with the neutralization temperature generally controlled to be less than 80°C. After neutralization, add 0.1% to 0.5% (by weight of the polyether polyol) of magnesium silicate/magnesium aluminosilicate adsorbent (or a mixed adsorbent of magnesium silicate and aluminosilicate in a 1:1 ratio (w/w)). Raise the temperature to an appropriate level (e.g., 110±5°C) for vacuum dehydration. Control the dehydration rate and perform hot material circulation filtration (e.g., at 110±5°C and a pressure of 2 to 4 KPa). When the moisture content reaches the required level (e.g., less than 0.1%) and the concentration of k+(Na+) ions in the filtrate meets the specified requirements, collect the clear and transparent filtrate to obtain a qualified polyether polyol product.Download Product Brochure
Key words: potassium hydrogen peroxymonosulfate compound salt, sodium percarbonate, sodium perborate, calcium peroxide, magnesium peroxide, solid hydrogen peroxide, magnesium silicate, magnesium aluminum silicate, composite powder, oil filter powder, anthraquinone regeneration catalyst
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