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Rice husk method silica
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Rice husk silica
Rice husk silica, also known as bio-based silica, is a material made from rice husk as a raw material, and its main component is silicon dioxide (SiO 2 ).
Rice husk extracted silica
Rice husk ash is obtained after the rice husk is burned, and liquid sodium silicate is generated by alkali leaching of the rice husk ash, and then reacted with acid to obtain precipitated hydrated silica.
Process flow
Application field
Rice husk silica is mainly used in the manufacture of high-performance tires, and also has broad application prospects in fine chemical industries such as washing, feed additives, food additives, and pharmaceutical additives.
Technical index
Complies with HG/T 3061-2020 standard, GB/T 32678-2016 standard and related industry standard requirements to ensure product quality and performance meet the standards.Index detection
Detection method
Unit
LKRH975 series
Index rangeLKRH115 series
Index rangeLKRH165 series
Index rangeLKRH200 series
Index rangeAppearance
Visual inspection
—
White powder/microspheres/lumps
White powder/microspheres/lumps
White powder/microspheres/lumps
White powder/microspheres/lumps
Specific surface area (BET method)
GB/T 10722
m²/g
170-200
100-130
140-170
>200
CTAB specific surface area
GB/T 23656
m²/g
140-180
95-125
135-175
180-220
Silicon dioxide content (calcined product)
HG/T 3062
%
≥95
45um sieve residue
HG/T 3064
%
≤0.5
Heating reduction (105℃)
HG/T 3065
%
4.0—8.0
Loss on ignition (1000℃)
HG/T 3066
%
≤7.0
PH value (10%)
HG/T 3067
6.0—7.5
Oil absorption value
HG/T 3072
10 -5 m³/kg
200-350
Water soluble matter
HG/T 3748
%
≤2.5
Total iron content
HG/T 3070
mg/kg
≤120
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