Method used for preparing sericite powder used for cosmetics

A technology of sericite powder and cosmetics, which is applied in the field of preparation of sericite powder for cosmetics, can solve problems such as easy peeling, achieve stable indicators, improve product purity, and reduce agglomeration

Inactive Publication Date: 2015-09-16
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Normal temperature modification-purification, the adsorbed water on the surface of sericite particles produces a large number of hydroxyl groups, which is beneficial to the bonding of sericite and modifier, but the modifier is only physically coated on the surface of sericite, and this coating effect is affected by external forces. Easy to peel off under action

Method used

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  • Method used for preparing sericite powder used for cosmetics
  • Method used for preparing sericite powder used for cosmetics
  • Method used for preparing sericite powder used for cosmetics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Shear flocculation of sericite quartz pulp: Sericite quartz powder is added to the stirring sand mill and dispersing multipurpose machine at a mass concentration of 10%, and after stirring and dispersing for 8 minutes at a rotating speed of 1200rpm, 1200g / t of acidic water glass with m=2.5 and pH=4 is sequentially added Stirring 8min, H 2 SO 4 Adjust the pH value of the slurry to 2-3 and stir for 8 minutes, then stir for 10 minutes with a surface treatment agent (polymethylhydrogensiloxane:isopropanol=100:100) with 2% by weight of sericite quartz powder, and stir for 300g / t cationic collector After 10 minutes, shear flocculated pulp was obtained.

[0052] Flotation purification: the sericite quartz pulp after shearing and flocculation is transferred to the flotation machine, the concentration of the pulp is adjusted to 5%, and the pH value of the pulp is kept at 2 to 3, and the concentrate I is obtained by micro-bubble flotation, and the cationic collection is continue...

Embodiment 2

[0057] Shear flocculation of sericite quartz pulp: Sericite quartz powder enters the stirring sand mill dispersing multi-purpose machine at a mass concentration of 50%, stirs and disperses at a speed of 1200rpm for 8 minutes, then adds 1600g / t of acidic water glass with m=2.5 and pH=4 in turn and stirs 8min, H 2 SO 4 Adjust the pH value of the slurry to 2-3 and stir for 8 minutes, then stir for 10 minutes with a surface treatment agent (polymethylhydrogensiloxane:isopropanol=100:200) with 2% by weight of sericite quartz powder, and stir for 10 minutes with 250g / t cationic collector After 10 minutes, a shear flocculated sericite slurry was obtained.

[0058] Flotation purification: the sericite quartz pulp after shearing and flocculation is transferred to the flotation machine, the concentration of the pulp is adjusted to 5%, and the pH value of the pulp is kept at 2 to 3, and the concentrate I is obtained by micro-bubble flotation, and the cationic collection is continued Ag...

Embodiment 3

[0063] Shear flocculation of sericite quartz slurry: Sericite quartz powder enters the stirring sand mill dispersing multi-purpose machine at a mass concentration of 50%, and after stirring and dispersing at 1500rpm for 8 minutes, add 800g / t of acidic water glass with m=2.5 and pH=4 in turn and stir 8min, H 2 SO 4 Adjust the pH value of the slurry to 2-3 and stir for 8 minutes, then stir for 10 minutes with a surface treatment agent (polymethylhydrogensiloxane:isopropanol=100:200) with a weight of 1.6% of sericite quartz powder, and stir for 350g / t cationic collector After 10 minutes, a shear flocculated sericite slurry was obtained.

[0064] Flotation purification: the sericite quartz pulp after shearing and flocculation is transferred to the flotation machine, the concentration of the pulp is adjusted to 5%, and the pH value of the pulp is kept at 2 to 3, and the concentrate I is obtained by micro-bubble flotation, and the cationic collection is continued Agent 150g / t, sti...

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Abstract

The invention discloses a method used for preparing sericite powder used for cosmetics. The method comprises following steps: shear flocculation, wherein a sericite quartz powder ore pulp with a mass concentration of 10 to 60% is delivered into a stirring sanding dispersing multifunction machine for shearing and stirring, and an inhibitor, a pH value regulating agent, a surface conditioning agent, and a cation collector are added successively so as to complete preliminary modification of sericite and formation of hydrophobic flocculation; flotation and purification, wherein after shear flocculation, the sericite quartz powder ore pulp is delivered into a flotation machine so as to obtain ore concentrate via floatation, wherein floatation concentration is controlled to be 3 to 20%, ore pulp pH value is controlled to be 2 to 3; and aging and modification, wherein obtained ore concentration I and II are subjected to dewatering and drying, and aging at high temperature so as to obtain the modified sericite powder used for cosmetics. The technological process of the method is coherent; operation is simple; the prepared cosmetic pigment is high in purity, excellent in dispersity, glossiness, malleability, and skin paste performance; skin feeling is fresh; the performance of the sericite powder is capable of satisfying quality requirements of extender pigments used for cosmetics; and the method can be used for matured industrialized large-scaled production.

Description

technical field [0001] The invention belongs to the technical field of non-metallic mineral processing engineering and surface treatment, and in particular relates to a method for preparing sericite powder for cosmetics. Background technique [0002] Sericite is a kind of natural fine-grained muscovite, which has a translucent, textured silky luster, a unique high-diameter-thickness ratio structure and excellent UV shielding performance, especially the fine scale-like thin-layer structure is soft and smooth characteristics. Cosmetic-grade sericite selects sericite raw materials with a high-diameter-thickness ratio whose heavy metal content is far lower than the national standard. The preparation technology with the core of dispersion control method, flexible peeling technology and precise particle size classification technology eliminates the need for existing wafers in traditional processes. Breaking blemishes that form burr edges and affecting skin feel can give the skin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/42A61K8/26
Inventor 高惠民田晶晶管俊芳吕化奇
Owner WUHAN UNIV OF TECH
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