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Magnesium Silicate

Product Name: Magnesium Silicate
Cas Number:1343-88-0
Molecular Formula:xMgO ySiO2 nH2O
Magnesium silicate adsorbent ( xMgO ySiO2 nH2O ) is one of the series of products of silicate, the appearance is a white amorphous solid particles, with good fluidity, which belongs to the solid amphotericcompounds, and the particles into a porous structure, with the performance of deacidification,decolorization and deodorization, adsorption of potassium and sodium ions and filtering the excellentmedium. Magnesium silicate adsorbent has been widely used in polyether refining adsorbent can be acid,alkali, and potassium, sodium ion adsorption polyether in crude, and the use of porous adsorbent pigment,odor of polyether in the product has excellent adsorption effect, so that the polyether attaining refiningeffect.


Appearance: a white amorphous solid particles, with good fluidity.
Technical indicators in table
Index name
Index
Index name
Index
Magnesium oxide ( MgO ) %
15 2
Loss on drying ( 105 , 2h ) %
10
Silicon oxide ( SiO2 ) %
70 3
Loss on ignition ( 900 , 2h ) %
15
Chloride ( Cl- ) %
0.1
The soluble salt%
3
Sulfate ( SO42- ) %
0.5
The free base ( NaOH) %
1
PH ( 5% aqueous solution )
8-10
Bulk density, g/L
300 500


Product application: The crude polyether polyol in refining kettle kettle, to adding 1% ~ 5% in certain temperature ( w/w ) of water, stirring, with 75% phosphoric acid neutralization material pH to 4 ~ 6, and the average temperature control is less than 80. And after adding polyether polyol, weight 0.1% ~ 0.5% magnesium silicateadsorbent ( or magnesium silicate: aluminum silicate =1:1 ( w/w ) hybrid adsorbent ), stir heated to proper temperature ( such as: 110 5 ) vacuum dewatering. Control of dehydration rate, when the moisturecontent to achieve the requirement ( such as less than 0.1% ), thermal material circulation filtering ( such as 110 5 , pressure 2 ~ 4KPa ), analysis of circulating filtrate of k+ (Na+) ion concentration reached,collect the clear filtrate, obtain qualified polyether polyol.
Packing and storage: The outer layer of coated paper, lined with soft plastic bag, net weight is 20kg/ bag. According to the specific requirements of bulk transport arrangements; be stored in cool, dry, clean area, pay attention to moisture, moisture proof, open bag is not used for sealing products.

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