Method for preparing attapulgite paper filler
A technology of attapulgite and modified attapulgite, which is applied to paper, papermaking, textiles and papermaking, etc., to achieve the effects of improving environmental protection efficiency, improving adsorption capacity, and improving hydrophobicity
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Embodiment 1
[0026] A preparation method of attapulgite paper filler, comprising the steps of:
[0027] (1) Pretreatment of attapulgite: Take attapulgite and crush it until the particle size is 18 mesh. While stirring, add attapulgite to distilled water with a solid-to-liquid weight ratio of 1:15. After stirring at 150 r / min for 2 hours, centrifuge the obtained slurry with a centrifuge to remove detritus minerals, and obtain attapulgite clay after filtering and drying;
[0028] (2) Preparation of the primary finished product of attapulgite: add the attapulgite concentrate obtained in step (1) into deionized water in a certain proportion to obtain attapulgite suspension, filter and stand to dry to obtain attapulgite primary product;
[0029] (3) Water vapor modification treatment: raise the primary product of attapulgite prepared in step (2) from room temperature to 300°C, and inject inert gas to make water vapor and attapulgite contact and react, and the reaction time For 1h, stop adding...
Embodiment 2
[0042] A preparation method of attapulgite paper filler, comprising the steps of:
[0043](1) Pretreatment of attapulgite: Take attapulgite and crush it until the particle size is 28 mesh. Under the condition of stirring, add attapulgite into distilled water with a solid-to-liquid weight ratio of 1:20. After stirring at 180 r / min for 2.5 hours, centrifuge the obtained slurry with a centrifuge to remove detritus minerals, and obtain attapulgite fine soil through the steps of filtration and drying;
[0044] (2) Preparation of the primary finished product of attapulgite: add the attapulgite concentrate obtained in step (1) into deionized water in a certain proportion to obtain attapulgite suspension, filter and stand to dry to obtain attapulgite primary product;
[0045] (3) Water vapor modification treatment: raise the primary product of attapulgite prepared in step (2) from room temperature to 320°C, and inject inert gas to make water vapor and attapulgite contact and react, a...
Embodiment 3
[0058] A preparation method of attapulgite paper filler, comprising the steps of:
[0059] (1) Pretreatment of attapulgite: Take attapulgite and crush it until the particle size is 22 mesh. Under stirring, add attapulgite into distilled water with a solid-to-liquid weight ratio of 1:17. After stirring at 165 r / min for 2 hours, centrifuge the obtained slurry with a centrifuge to remove detritus minerals, and obtain attapulgite clay after filtering and drying;
[0060] (2) Preparation of the primary finished product of attapulgite: add the attapulgite concentrate obtained in step (1) into deionized water in a certain proportion to obtain attapulgite suspension, filter and stand to dry to obtain attapulgite primary product;
[0061] (3) Water vapor modification treatment: raise the primary product of attapulgite prepared in step (2) from room temperature to 310°C, and inject inert gas to make water vapor and attapulgite contact and react, and the reaction time For 1h, stop addi...
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