Precise modifying method for fine particle dispersion liquid
AssigneeM. Technique Co., Ltd.
InventorsMasakazu Enomura, Daisuke Honda
Life of this patent
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Abstract
A method for modifying a fine particle dispersion liquid has excellent dispersibility and dispersion stability. In this method for modifying a fine particle dispersion liquid having improved fine particle dispersibility, impurities included in an agglomeration of fine particles contained in the fine particle dispersion liquid are released into the dispersion liquid by applying physical energy to the agglomeration and performing dispersion processing for dispersion into particles that are smaller than the agglomeration of fine particles. The impurities are removed from the dispersion liquid by means of a removal unit provided with a filtration membrane before reagglomeration is caused by the impurities.
Claims10
A method for reforming a fine particle dispersion solution, wherein the fine particle dispersion solution includes aggregate of the fine particle, and impurities comprising in-solution impurities present in the dispersion solution independent of the aggregate and in-particle impurities present in the aggregate, the method comprising the steps of:
- performing a dispersion process, comprising:
- applying a physical energy from a disperser to the aggregate of the fine particle included in the fine particle dispersion solution;
- dispersing the aggregate of the fine particle to smaller particles compared with the aggregate of the fine particles;
- and
- discharging the in-particle impurities from the aggregate into the dispersion solution, the discharged in-particle impurities becoming in-solution impurities;
- transporting the dispersion solution after the dispersion process to a removing unit via a transporting path;
- and
- performing a removal process to remove the in-solution impurities including the discharged in-particle impurities from the step of discharging, from the dispersion solution by the removing unit,
- wherein the removal process to remove the in-solution impurities including the discharged in-particle impurities from the step of discharging from the dispersion solution is started by the removing unit within 3 seconds after the in-particle impurities are discharged into the dispersion solution.
A method for reforming a fine particle dispersion solution, wherein the fine particle dispersion solution includes aggregate of the fine particle, and impurities comprising in-solution impurities present in the dispersion solution independent of the aggregate and in-particle impurities present in the aggregate, the method comprising the steps of:
- performing a dispersion process, comprising:
- applying a physical energy from a disperser to the aggregate of the fine particle included in the fine particle dispersion solution;
- dispersing the aggregate of the fine particle to smaller particles compared with the aggregate of the fine particles;
- and
- discharging the in-particle impurities from the aggregate into the dispersion solution, the discharged in-particle impurities becoming in-solution impurities;
- performing a removal process to remove the in-solution impurities including the discharged in-particle impurities from the step of discharging, from the dispersion solution by a removing unit within 3 seconds after the in-particle impurities are discharged into the dispersion solution;
- and
- controlling dispersion property of the fine particles in the fine particle dispersion solution by controlling pH of the fine particle dispersion solution obtained after the removal process.
Dependencies are inferred from the claim text.