阅读说明：本技术 一种纳米仿瓷沙粒制备方法 (Preparation method of nano ceramic-like sand grains ) 是由 于海军 于 2021-08-11 设计创作，主要内容包括：本发明涉及一种纳米仿瓷沙粒制备方法,所述一种纳米仿瓷沙粒制备方法包括如下步骤：S1：初步制备二氧化硅纳米粉；S2：对初步制备的二氧化硅纳米粉,超细粉碎机开启的过程中,介入超声粉碎进行进一步粉碎处理,得到成品的二氧化硅纳米粉；S3：制得混合材料团；S4：将混合材料团压制成片,接着将混合材料团片放入模具中,压制成颗粒状的混合材料团颗粒；S5：混合材料团颗粒脱模后,将混合材料团颗粒再次进行高温加热,最后混合材料团颗粒自然降温,制备成纳米仿瓷沙粒。该纳米仿瓷沙粒制备方法,改材质采用的均为健康材质,不会对儿童的健康产生危害,增大了混合材料团颗粒的耐磨性,混合材料团颗粒也不会产生脱色的情况。(The invention relates to a preparation method of a nano ceramic-like sand grain, which comprises the following steps: s1: preliminarily preparing silicon dioxide nano powder; s2: carrying out ultrasonic crushing on the preliminarily prepared silicon dioxide nano powder in the starting process of the superfine crusher for further crushing treatment to obtain finished silicon dioxide nano powder; s3: preparing a mixed material briquette; s4: pressing the mixed material pellets into tablets, putting the mixed material pellets into a mould, and pressing into granular mixed material pellet; s5: and (3) after demoulding the mixed material agglomerate particles, heating the mixed material agglomerate particles at high temperature again, and finally naturally cooling the mixed material agglomerate particles to prepare the nano ceramic-like sand particles. According to the preparation method of the nano ceramic-like sand grains, the materials are changed into healthy materials, so that the health of children is not damaged, the wear resistance of mixed material cluster particles is improved, and the mixed material cluster particles cannot be decolored.)

1. A preparation method of nano ceramic-like sand grains is characterized by comprising the following steps: the preparation method of the nano ceramic-like sand comprises the following steps:

s1: preliminarily preparing silicon dioxide nano powder, and carrying out ultrafine grinding on silicon dioxide particles by an ultrafine grinder;

s2: carrying out ultrasonic crushing on the preliminarily prepared silicon dioxide nano powder in the starting process of the superfine crusher for further crushing treatment to obtain finished silicon dioxide nano powder;

s3: then stirring and mixing the silicon dioxide nano powder, the calcium powder, the edible glue, the water and the edible pigment according to a certain proportion to prepare a mixed material cluster;

s4: pressing the prepared mixed material dough into tablets by a tablet press, putting the mixed material dough into a mould, and pressing into granular mixed material dough particles;

s5: and (3) after demoulding the mixed material agglomerate particles, heating the mixed material agglomerate particles at high temperature again, and finally naturally cooling the mixed material agglomerate particles to prepare the nano ceramic-like sand particles.

2. The method for preparing the nano ceramic-like sand particles according to claim 1, which is characterized in that: in step S1, before the silica particles are crushed, a screening process is performed to remove impurities in the silica particles.

3. The method for preparing the nano ceramic-like sand particles according to claim 1, which is characterized in that: in step S2, the high-energy shock waves generated by the ultrasonic cavitation and the micro-jet flow act together to further pulverize the silica.

4. The method for preparing the nano ceramic-like sand particles according to claim 1, which is characterized in that: in the step S3, the components include 30-50 parts of silicon dioxide nano powder, 40 parts of calcium powder, 10 parts of edible glue, 40 parts of water and 1 part of edible pigment.

5. The method for preparing the nano ceramic-like sand particles according to claim 1, which is characterized in that: in the step S3, during the stirring process, the silicon dioxide nano powder and the calcium powder are firstly added, then the water is added for stirring, and then the edible glue and the edible pigment are added to fully and uniformly stir the materials, wherein the stirring temperature is 60 ℃.

6. The method for preparing the nano ceramic-like sand particles according to claim 1, which is characterized in that: in the step S4, in the pressing process of the pressing mold, the mixed material pellet pressed in the mold is primarily shaped by high temperature heating at 600-.

7. The method for preparing the nano ceramic-like sand particles according to claim 1, which is characterized in that: in the step S5, the mixed material particles are sent to a high temperature heating box through a conveyor belt for heating treatment, wherein the temperature in the heating box is 1800-1900 ℃.

Technical Field

The invention relates to the technical field of preparation of ceramic-like sand grains, in particular to a preparation method of nano ceramic-like sand grains.

Background

Adopt emulation sand grain to place in the fixed area often in children's recreation ground, can supply children to play, can play as children fall down in addition and can play the effect of buffering, common emulation sand grain in the market uses for a long time, and mutual friction can produce more powder between the emulation sand grain, leads to the powder to adhere to children's skin surface, causes the influence to children's health to, the easy decoloration of sand grain color.

Therefore, aiming at the problems, a preparation method of the nano ceramic-like sand particles is provided.

Disclosure of Invention

The invention aims to provide a preparation method of nano ceramic-like sand grains, which aims to solve the problems that the mutual friction among the ceramic-like sand grains can generate more powder when the ceramic-like sand grains are used for a long time, so that the powder is attached to the surface of the skin of a child, the health of the child is influenced, and the color of the sand grains is easy to decolor.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of nano ceramic-like sand grains comprises the following steps:

s1: preliminarily preparing silicon dioxide nano powder, and carrying out ultrafine grinding on silicon dioxide particles by an ultrafine grinder;

s2: carrying out ultrasonic crushing on the preliminarily prepared silicon dioxide nano powder in the starting process of the superfine crusher for further crushing treatment to obtain finished silicon dioxide nano powder;

s3: then stirring and mixing the silicon dioxide nano powder, the calcium powder, the edible glue, the water and the edible pigment according to a certain proportion to prepare a mixed material cluster;

s4: pressing the prepared mixed material dough into tablets by a tablet press, putting the mixed material dough into a mould, and pressing into granular mixed material dough particles;

s5: and (3) after demoulding the mixed material agglomerate particles, heating the mixed material agglomerate particles at high temperature again, and finally naturally cooling the mixed material agglomerate particles to prepare the nano ceramic-like sand particles.

Preferably, in step S1, before the silica particles are pulverized, a screening process is performed to remove impurities in the silica particles.

Preferably, in step S2, the high-energy shock waves generated by the ultrasonic cavitation and the micro-jet flow cooperate to further pulverize the silica.

Preferably, in the step S3, the components include, by weight, 30-50 parts of silicon dioxide nano powder, 40 parts of calcium powder, 10 parts of edible glue, 40 parts of water, and 1 part of edible pigment.

Preferably, in the step S3, during the stirring process, the silicon dioxide nano powder and the calcium powder are firstly added, then the water is added for stirring, and then the edible glue and the edible pigment are added to fully and uniformly stir the materials, wherein the stirring temperature is 60 ℃.

Preferably, in the step S4, in the pressing process of the pressing mold, the mixed material pellet pressed in the pressing mold is primarily shaped by high temperature heating, the heating temperature is 600-.

Preferably, in the step S5, the mixed material pellet is conveyed to a high temperature heating box through a conveyor belt for heating treatment, wherein the temperature in the heating box is 1800-1900 ℃.

Compared with the prior art, the invention has the beneficial effects that: the preparation method of the nano ceramic-like sand comprises the following steps:

1. the materials are all healthy materials, so that gases which are not beneficial to body health can not be emitted, and the health of children can not be harmed;

2. the method has the advantages that the silicon dioxide on the surface of the mixed material group particles is melted by carrying out 1800-1900 ℃ high-temperature heating treatment on the mixed material group particles for the second time, the melted silicon dioxide is wrapped on the surface of the mixed material group particles, and after the melted silicon dioxide is cooled, a silicon dioxide protective layer is formed on the surface of the mixed material group particles, so that the surface of the mixed material group particles is smoother, the wear resistance of the mixed material group particles is improved, and the mixed material group particles cannot be decolored under the action of the silicon dioxide protective layer.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The invention provides a technical scheme that: a preparation method of nano ceramic-like sand grains comprises the following steps:

s1: preliminarily preparing silicon dioxide nano powder, and carrying out ultrafine grinding on silicon dioxide particles by an ultrafine grinder;

s2: carrying out ultrasonic crushing on the preliminarily prepared silicon dioxide nano powder in the starting process of the superfine crusher for further crushing treatment to obtain finished silicon dioxide nano powder;

s3: then stirring and mixing the silicon dioxide nano powder, the calcium powder, the edible glue, the water and the edible pigment according to a certain proportion to prepare a mixed material cluster;

s4: pressing the prepared mixed material dough into tablets by a tablet press, putting the mixed material dough into a mould, and pressing into granular mixed material dough particles;

s5: and (3) after demoulding the mixed material agglomerate particles, heating the mixed material agglomerate particles at high temperature again, and finally naturally cooling the mixed material agglomerate particles to prepare the nano ceramic-like sand particles.

Further, in step S1, before the silica particles are pulverized, a screening process is performed to remove impurities in the silica particles.

Further, in step S2, the high-energy shock waves generated by the ultrasonic cavitation and the micro-jet flow cooperate to further pulverize the silica.

Further, in the step S3, the components include, by weight, 30 parts of silicon dioxide nano powder, 40 parts of calcium powder, 10 parts of edible glue, 40 parts of water, and 1 part of edible pigment.

Further, in the step S3, during the stirring process, the silicon dioxide nano powder and the calcium powder are firstly added, then the water is added for stirring, and then the edible glue and the edible pigment are added to fully and uniformly stir the materials, wherein the stirring temperature is 60 ℃.

Further, in the step S4, in the pressing process of the pressing mold, the mixed material pellet pressed in the pressing mold is primarily shaped by high temperature heating, the heating temperature is 600-.

Further, in the step S5, the mixed material pellet is sent to a high temperature heating box through a conveyor belt for heating treatment, wherein the temperature in the heating box is 1800-1900 ℃.

Example 2

The invention provides a technical scheme that: a preparation method of nano ceramic-like sand grains comprises the following steps:

s1: preliminarily preparing silicon dioxide nano powder, and carrying out ultrafine grinding on silicon dioxide particles by an ultrafine grinder;

s2: carrying out ultrasonic crushing on the preliminarily prepared silicon dioxide nano powder in the starting process of the superfine crusher for further crushing treatment to obtain finished silicon dioxide nano powder;

s3: then stirring and mixing the silicon dioxide nano powder, the calcium powder, the edible glue, the water and the edible pigment according to a certain proportion to prepare a mixed material cluster;

s4: pressing the prepared mixed material dough into tablets by a tablet press, putting the mixed material dough into a mould, and pressing into granular mixed material dough particles;

s5: and (3) after demoulding the mixed material agglomerate particles, heating the mixed material agglomerate particles at high temperature again, and finally naturally cooling the mixed material agglomerate particles to prepare the nano ceramic-like sand particles.

Further, in step S1, before the silica particles are pulverized, a screening process is performed to remove impurities in the silica particles.

Further, in step S2, the high-energy shock waves generated by the ultrasonic cavitation and the micro-jet flow cooperate to further pulverize the silica.

Further, in the step S3, the components include, by weight, 40 parts of silicon dioxide nano powder, 40 parts of calcium powder, 10 parts of edible glue, 40 parts of water, and 1 part of edible pigment.

Further, in the step S3, during the stirring process, the silicon dioxide nano powder and the calcium powder are firstly added, then the water is added for stirring, and then the edible glue and the edible pigment are added to fully and uniformly stir the materials, wherein the stirring temperature is 60 ℃.

Further, in the step S4, in the pressing process of the pressing mold, the mixed material pellet pressed in the pressing mold is primarily shaped by high temperature heating, the heating temperature is 600-.

Further, in the step S5, the mixed material pellet is sent to a high temperature heating box through a conveyor belt for heating treatment, wherein the temperature in the heating box is 1800-1900 ℃.

Example 3

The invention provides a technical scheme that: a preparation method of nano ceramic-like sand grains comprises the following steps:

s1: preliminarily preparing silicon dioxide nano powder, and carrying out ultrafine grinding on silicon dioxide particles by an ultrafine grinder;

s2: carrying out ultrasonic crushing on the preliminarily prepared silicon dioxide nano powder in the starting process of the superfine crusher for further crushing treatment to obtain finished silicon dioxide nano powder;

s3: then stirring and mixing the silicon dioxide nano powder, the calcium powder, the edible glue, the water and the edible pigment according to a certain proportion to prepare a mixed material cluster;

s4: pressing the prepared mixed material dough into tablets by a tablet press, putting the mixed material dough into a mould, and pressing into granular mixed material dough particles;

s5: and (3) after demoulding the mixed material agglomerate particles, heating the mixed material agglomerate particles at high temperature again, and finally naturally cooling the mixed material agglomerate particles to prepare the nano ceramic-like sand particles.

Further, in step S1, before the silica particles are pulverized, a screening process is performed to remove impurities in the silica particles.

Further, in step S2, the high-energy shock waves generated by the ultrasonic cavitation and the micro-jet flow cooperate to further pulverize the silica.

The large-particle silicon dioxide is subjected to ultrafine grinding through the comprehensive action of impact, shearing, friction and the like generated by an ultrafine grinding machine, and then particles with different particle sizes are separated by using a high-efficiency grouping device, so that the homogenization and the specialization of the particle size distribution of the nano-silicon dioxide powder are realized. The physical method has simple production process, large production capacity and easy control of production process, but has higher requirement on raw materials, particles are agglomerated due to the increase of surface energy along with the reduction of particle size, the particle size of powder particles is difficult to further reduce, and the raw materials with certain concentration are synchronously crushed and dispersed in a crushing cylinder by utilizing the combined action of extrusion, shearing, impact and other acting forces generated by mutual collision of grinding media and high-energy shock waves and microjets generated by ultrasonic cavitation.

Further, in the step S3, the components include 50 parts of silicon dioxide nano powder, 40 parts of calcium powder, 10 parts of edible glue, 40 parts of water and 1 part of edible pigment.

Further, in the step S3, during the stirring process, the silicon dioxide nano powder and the calcium powder are firstly added, then the water is added for stirring, and then the edible glue and the edible pigment are added to fully and uniformly stir the materials, wherein the stirring temperature is 60 ℃.

Further, in the step S4, in the pressing process of the pressing mold, the mixed material pellet pressed in the pressing mold is primarily shaped by high temperature heating, the heating temperature is 600-.

Further, in the step S5, the mixed material pellet is sent to a high temperature heating box through a conveyor belt for heating treatment, wherein the temperature in the heating box is 1800-1900 ℃.

The method comprises the steps of carrying out 1800-1900 ℃ high-temperature heating treatment on mixed material agglomerate particles for the second time to melt silicon dioxide on the surfaces of the mixed material agglomerate particles, wrapping the melted silicon dioxide on the surfaces of the mixed material agglomerate particles, cooling the melted silicon dioxide to form a silicon dioxide protective layer on the surfaces of the mixed material agglomerate particles, enabling the surfaces of the mixed material agglomerate particles to be smoother, increasing the wear resistance of the mixed material agglomerate particles, and enabling the mixed material agglomerate particles not to generate decoloration under the action of the silicon dioxide protective layer

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.