Method for preparing inorganic gel of bentonite
A technology of inorganic gel and bentonite, applied in the direction of inorganic chemistry, chemical instruments and methods, non-metallic elements, etc., can solve the problems of large one-time investment, unfavorable large-scale production, and inability to apply, and achieve improved consistency and thixotropic performance , Conducive to large-scale production, to achieve the effect of large-scale production
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[0028] Example 1:
[0029] Take Zhejiang Anji bentonite filter cake with montmorillonite content greater than 80% as raw material, with a water content of 40% to 80%, add 6% sodium carbonate and 13% urea powder by weight of the filter biscuit material, in a twin-screw extruder After mixing and modifying for 1.2 hours, the modified material is dried at 105° C., crushed through a 300-mesh sieve, and mixed with 25% sodium carboxymethyl cellulose by weight of the dried material.
Example Embodiment
[0030] Example 2:
[0031] Taking the Zhejiang Anji bentonite filter cake with montmorillonite content greater than 80% as raw material, adding 2% sodium carbonate and 20% urea powder by weight of the filter biscuit material, mixing and modifying in a twin-screw extruder for 2 hours. The modified material is dried at 130°C, crushed through an 80-mesh sieve, and mixed with xanthan gum of 30% by weight of the dried material.
Example Embodiment
[0032] Example 3:
[0033] Take Zhejiang Anji bentonite filter cake with montmorillonite content greater than 80% as raw material, add 8% sodium carbonate by weight of the filter biscuit material, mix and modify it in a kneader for 1 hour, and dry the modified material at 190°C. After being crushed through a 325-mesh sieve, it is mixed with 4% magnesium oxide by weight of the dried material.
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