JP2002059023A - Method for manufacturing spherical powder of tourmaline - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a use feeling of a tourmaline powder. SOLUTION: A tourmaline is roughly ground (step S1) and subsequently moderately ground (step S2) to obtain tourmaline ground matter, which is, in turn, heat-treated to remove organic matter (step S3). Next, this ground matter is finely ground with a high speed rotary machine using centrifugal force to obtain the tourmaline powder (step S4). This tourmaline powder is rubbed with particles of a corundum raw ore with a Mohs hardness of 10 or less in a vibration barrel to shave off the sharp parts or corner parts of the powder to make the powder spherical (step S5). Subsequently, the particles of the corundum raw ore are removed by air classification (step S6). Thereafter, the spherical tourmaline powder is rubbed with particles of an ore having hardness equal to or less than that of tourmaline like agate in a vibration barrel to smoothly polish the surface of the powder (step S7). Thereafter, the particles of agate are removed by air classification (step S8) to obtain the spherical powder of tourmaline.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a tourmaline powder so as to improve the feeling of use of the tourmaline powder.

[0002]

2. Description of the Related Art Tourmaline is a shoal tourmaline having an opaque black color containing iron, a lithia tourmaline containing a variety of colors such as white, pink, red, green, and blue, including lithium, which is transparent to translucent. It is a silicate mineral composed of three kinds of dolavite tourmaline having opaque yellow, dark green, brown, and black containing magnesium, and usually 3%
It contains organic matter of a certain degree, and furthermore, the stone itself has a polarity and generates weak static electricity, as is called tourmaline because of its electrical properties, and this static electricity causes water to be electrolyzed. It is known to have an action of continuously generating negative ions and an action of emitting infrared rays of 4 to 14 μm.

[0003] The negative ions generated by the tourmaline activate cells to activate the living body, thereby promoting the growth of the living body, and purifying water by altering harmful substances and odorous substances. It has the effect of deodorizing, while the infrared radiation emitted from the tourmaline is
It is known that conversion to heat energy can provide a heat retaining effect, a promotion of blood circulation, a bacteriostatic effect, a freshness maintaining effect, and the like.

[0004] For this reason, as one method of using tourmaline, tourmaline is powdered, and the tourmaline powder is used as a cosmetic raw material, or the powder is kneaded or woven into fibers to produce various cloth products. It has been proposed to form or manufacture various resin products from the masterbatch by mixing or mixing powder into various synthetic resins to form a masterbatch.

[0005] When producing such tourmaline powder,
Conventionally, as shown in a flow chart of FIG. 3, tourmaline ore is first roughly crushed (step Sa) by a compression crusher, cutting crusher, impact crusher or the like, and then the coarsely crushed tourmaline is rolled into a roll mill or hammer. Hammer mills, pin mills, as punch-type stamp mills, high-speed rotary mills, impact mills,
Medium pulverization using a desk mill, a centrifugal classifier mill or the like (Step Sb), and further, a roller mill, a grinding mill, a natural mill, a ball mill, a medium stirring mill, a jet mill, a wet high-speed mill, a mortar, a stone mill, etc. Then, a fine powder of tourmaline is produced by finely pulverizing with the use of (Step Sc).

[0006]

However, when powder is produced by pulverizing tourmaline ore according to the procedure described above, the organic matter contained in the tourmaline ore remains as it is. The organic matter later elutes and affects the particle shape of the powder, thereby causing sharp points on the surface of each particle of the powder. When the tourmaline powder produced as above is used as a cosmetic raw material, the sharpened part of the powder pierces the skin, making the cosmetic product less stretchable and slippery, and kneaded or woven into the fiber. In this case, the pointed portion of the powder is easily caught on the blade of the scissors or the needle of the sewing needle for cutting the cloth, so that the scissors and the sewing needle are easily dulled. In the case of using a screw, the sharp portion of the powder is easily caught by the screw for conveying the master batch or the screw of the extruder, and therefore, the above-mentioned screw and the like are easily worn and the feeling of use is poor. There is a problem. Furthermore, if organic substances remain in the tourmaline powder, there is a risk that the organic substances may chemically react with each other, so that it is difficult to stabilize the quality of the produced powder.

Accordingly, an object of the present invention is to provide a method for producing a tourmaline spherical powder having no sharp portions on the particle surface so that the feeling of use of the tourmaline powder can be improved.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a method for producing powder by pulverizing a pulverized tourmaline product having a required particle size. After removing the organic substances contained in the tourmaline, the pulverized tourmaline from which the organic substances have been removed is finely pulverized by colliding the pulverized substances with each other in a high-speed rotating machine using centrifugal force. Tourmaline powder produced by the pulverization process is mixed with an abrasive for semi-finishing having a higher hardness than tourmaline and finely vibrated and polished, and then tourmaline polished with the abrasive for semi-finishing. Is mixed with a finishing abrasive having a hardness substantially equal to or lower than that of tourmaline and finely vibrated to produce a spherical powder.

By removing the organic matter from the pulverized tourmaline having a required particle size in advance, it is possible to reduce the size in the next step, and to prevent the possibility that the organic matter will be eluted later and affect the powder shape. can do. By grinding the finely pulverized tourmaline powder with an abrasive for semi-finishing, the sharpened parts and corners of the powder are shaved off and the powder is turned into a sphere. By rubbing, the surface is polished so that the surface becomes glossy, so that a smooth spherical powder having no sharp portions on the particle surface unlike conventional powders can be produced. In addition, since organic substances that may cause a chemical reaction are removed in advance, the quality of the produced spherical powder can be stabilized.

[0010] Further, by heating the pulverized tourmaline to remove organic matter and discolor the pulverized tourmaline at the same time, the powder having a color tone other than the color of the ore itself of the pulverized substance derived from an opaque ore is usually obtained. It is possible to produce a powder having a tint other than white of a body or a crushed material derived from a transparent ore, and it is possible to produce a spherical powder having a tint suitable for a color desired for a final product.

Further, when the pulverized tourmaline is pulverized in a high-speed rotating machine by applying a high-pressure jet stream to the pulverized substance, the pulverized tourmaline can be stirred in the high-speed rotating machine. Can be efficiently performed, and the time required for the fine pulverization can be reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a flow chart of a production process showing one embodiment of the method for producing a tourmaline spherical powder according to the present invention. As an example, a case where a tourmaline spherical powder having an average particle diameter of 0.066 μm is produced is shown. Show.

First, tourmaline ore is roughly pulverized in the same manner as in step Sa in the same manner as in the conventional pulverization step shown in FIG. 3 (step S1), and then is subjected to medium pulverization in the same manner as in step Sb ( Step S2) After the pulverizing treatment, when performing the fine pulverizing treatment, the pulverized tourmaline is heat-treated to remove the organic matter contained in about 3% of the tourmaline (Step S3). The removed medium pulverized material is finely pulverized (step S
4) In addition to performing the polishing process.

In this polishing treatment, first, the tourmaline powder finely pulverized in step S4 is polished with a semi-finishing abrasive having a hardness higher than tourmaline (step S5). Is removed by sorting using a wind force (Step S6), and then polished with a finishing abrasive having the same or lower hardness as tourmaline (Step S7). Thereafter, the finishing abrasive is sorted using a wind force. (Step S8) to remove
Obtain spherical powder as product.

More specifically, in the step of removing organic substances in the step S3, the pulverized tourmaline obtained in the step S2 is placed in a heating furnace and heated to a processing temperature of 25.
The treatment is performed at 0 ° C. to 4000 ° C. for 15 minutes to 2 hours. Thereby, the organic matter contained in the tourmaline ore is burned and removed. Further, at this time, by adjusting the processing temperature and the processing time within the above ranges, the color of the pulverized tourmaline can be changed, and the tint of the produced powder can be adjusted. In other words, the crushed product of tourmaline ore retains the color of the ore itself when crushed from opaque ore, and becomes white when crushed from transparent ore. Thus, for example, a gray crushed material derived from black shawl tourmaline can be turned into a light ocher color by treating at 750 ° C. for 1 hour, and a white crushed material derived from a transparent ore of lithiatourmaline can be treated with temperature. By appropriately selecting the conditions and the processing time, it is possible to change various colors such as blue, red, yellow, etc., and thus, by the color change treatment by this heat treatment, or after the color change treatment,
By mixing the powders changed into the respective colors, it becomes possible to produce powder having a color suitable for the color desired for the final product.

Further, in step S3, the tourmaline powder is irradiated with radiation using an ore that emits radiation of 1 microsievert or less, such as uranium, radon, and cobalt, together with the removal of organic substances by heat treatment. It is also possible to change the color of the tourmaline powder by the irradiation treatment. The reason why the processing time in step S3 is set to 15 minutes to 2 hours is that if the processing time is shorter than 15 minutes, the removal of organic substances may be insufficient. This is because energy cannot be wasted because no further effect of removing organic substances can be expected.

The fine pulverizing process in step S4 is as follows.
The tourmaline crushed material subjected to the organic substance removal treatment in step S3 is charged into a rotating drum of a high-speed rotating machine,
While rotating the rotating drum at a high speed, a high-pressure jet stream is blown into the inside thereof, thereby applying a centrifugal force and the stirring force by the jet stream to each particle of the pulverized tourmaline, whereby the particles of the pulverized substance Are efficiently collided and finely pulverized to obtain a powder of a required size.

In the semi-finishing polishing step in step S5, the average particle size obtained by pulverizing in step S4 is 0.
6.6 μm tourmaline powder, Mohs hardness 7.
As a semi-finishing abrasive having a hardness higher than tourmaline of 0 to 7.5, a grain of a corundum raw stone having a Mohs hardness of 10 or less, for example, a Mohs hardness of 9, is used.
0 to 70% are mixed together and thrown into a vibrating barrel machine equipped with an ultrasonic vibrator, and finely vibrated in the vibrating barrel machine. By contacting and rubbing with the granules of the above, the sharp and corner portions of the tourmaline powder are scraped off with a high hardness ore to make the shape of the particles of the tourmaline powder spherical. In this case, the corundum gemstone particles used in this case have a particle surface that has been previously polished smoothly, so that tourmaline powder in contact with the corundum gemstone particles is damaged. So that you don't attach them. The corundum gem used in the above-mentioned polishing treatment is put into a wind separator together with tourmaline powder in step S6.
Sorting using a wind force separates and removes the powder from tourmaline.

The step of finishing polishing in step S7 is performed on the tourmaline powder which has been formed into a sphere by the intermediate finishing polishing in step S5 and from which the polishing material for intermediate finishing has been removed in step S6. As a finishing abrasive having a low hardness, for example, 30 to 70% of agate particles having a Mohs hardness of 6.5 to 7.0 are mixed and charged into a vibration barrel machine equipped with an ultrasonic vibrator. Similar to step S5, by applying micro-vibration and applying ultrasonic waves, the surface of the tourmaline powder sphericalized in step S5 is rubbed with agate particles and polished to give a gloss. By doing so, it is possible to produce a tourmaline spherical powder 1 having a smooth surface as shown in FIG. 2 without damaging the tourmaline powder surface. It becomes so that. In addition, the agate particles used in the above-mentioned polishing treatment are put together with the tourmaline powder into a wind separator in step S8, and are separated and removed from the tourmaline powder 1 by performing separation using a wind force. I have to do it.

As described above, since the organic substance can be removed in advance and then finely pulverized, the tourmaline spherical powder 1 having a smooth surface can be produced. Because the sharp parts that had been generated on the surface of the conventional tourmaline powder do not stick into the skin, it was possible to improve the elongation and slippage of the cosmetics, especially when gelled and formulated into cream etc. In this case, a smooth and pleasant feeling can be obtained when applied to the skin, and when kneaded or woven into fiber, tourmaline is applied to the tip of the scissor blade or sewing needle that cuts the cloth. Powder can be prevented from being caught, scissors and sewing needles can be prevented from dulling, and when mixed into synthetic resin to form a master batch, the master batch is transported. Clew and tourmaline powder can be prevented from being caught on the screw of the extrusion molding machine, and the wear of the screw and the like can be prevented, so that in any case, the usability of the tourmaline powder is improved. Will be done.

Since the organic matter is removed in advance in step S3, a space free of organic matter is formed in the pulverized tourmaline, and the pulverized tourmaline formed in this space is finely divided in step S4. By pulverizing, not only can the powder be smaller than the conventional powder production method, it can also prevent organic substances from chemically reacting with each other, and the quality of the produced tourmaline spherical powder can be reduced. Can be stabilized.

Further, since the roughening abrasive used in step S5 is a coarse corundum ore having a Mohs' hardness of 9, it is smaller than ceramics generally used as an abrasive used for polishing particles. The hardness of the abrasive material can be slightly higher than the hardness of the tourmaline to be polished, preventing line-shaped scratches on the powder surface of the tourmaline during polishing. it can.

It should be noted that the present invention is not limited to only the above-described embodiment.
Although the case where a spherical powder of tourmaline of 66 μm is produced is shown, the present invention is applicable to the case of producing a spherical powder of tourmaline having an average particle size of 0.066 to 4 μm. Mohs hardness 1
0 or less, for example, the use of corundum gemstones is shown, but if the ore has a hardness higher than tourmaline, emerald or aquamarine, imperial topaz, alexandrite, chrysolite,
Although it is possible to adopt any ore particles such as simofein and spinel, and as a finishing abrasive used in step S7, it is shown that agate particles are used.
If the ore has a Mohs hardness lower than or equal to tourmaline, zircon, garnet, peridot, amethyst, citrine, chrysobrace, opal, kunzite, etc., any ore granules may be used. Needless to say, leather and resin may be used, and various changes may be made without departing from the scope of the present invention.

[0025]

As described above, according to the method for producing a spherical tourmaline powder of the present invention, the method for producing a powder by pulverizing a pulverized tourmaline product having a required particle size is described. After the pulverized material is heated to remove organic substances contained in the tourmaline, the pulverized tourmaline from which the organic substances have been removed is finely pulverized by colliding the pulverized substances in a high-speed rotating machine using centrifugal force. Then, the powder of tourmaline produced by the fine pulverization process is mixed with a polishing material for semi-finishing having a higher hardness than tourmaline and finely vibrated, and then polished. The polished tourmaline powder is mixed with a finishing abrasive having a hardness approximately equal to or lower than that of tourmaline and finely vibrated to produce a spherical powder by polishing. Therefore, by removing the organic matter in advance, the pulverized material having a space through which the organic matter is removed can be finely pulverized to produce powder of smaller particles, and the organic matter is not eluted later. In addition, the fine powder of tourmaline can be rubbed with a polishing material for semi-finishing and polished to sharpen sharp or corner portions of the powder. The powder can be made spherical, and further polished so that the surface becomes glossy by rubbing it with a finishing abrasive, and a smooth spherical powder without sharp parts like the conventional powder is applied to the particle surface. When the spherical powder of tourmaline is used as a cosmetic raw material, it can improve the elongation and slippage of the cosmetic. When attached to You can get a smooth feel, and when kneading or weaving into the fiber, you can prevent the powder from being caught on the tip of the scissor blade or sewing needle that cuts the fabric, Scissors and sewing needles can be prevented from being dulled.Furthermore, when mixed into a synthetic resin to form a master batch, powder is caught on a screw for conveying the master batch or a screw of an extrusion molding machine. Can be prevented
Abrasion of the screw and the like can be prevented, and thus, in any case, the usability of the tourmaline powder can be improved, and the different colors obtained by pulverizing the transparent tourmaline ore or the opaque tourmaline ore can be different. And a different color tone by mixing different color tone can be obtained, and furthermore, an excellent effect of preventing a chemical reaction between organic substances and stabilizing quality can be achieved, and By removing the organic matter by heating the pulverized tourmaline and discoloring the pulverized tourmaline at the same time, usually, powder having a tint other than the color of the ore itself having a pulverized substance derived from an opaque ore, or transparent. Powder having a color other than white of the ground ore-derived pulverized material, and producing spherical powder having a color suitable for a desired color of the final product. It becomes possible, further, by so exert pressure jet stream in pulverized product when milling tourmaline grind at high speed machine, it is possible to stir the tourmaline grind at high speed flight,
The effect that the collision between the pulverized materials can be performed efficiently and the time required for the fine pulverization processing can be reduced can be achieved.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a method for producing a spherical tourmaline powder of the present invention, and shows a flow of a production procedure.

FIG. 2 is a schematic diagram showing a spherical tourmaline powder produced by the production process shown in FIG.

FIG. 3 is a diagram showing a flow of a procedure in a conventional method for producing tourmaline powder.

[Explanation of symbols]

 1 Spherical powder of tourmaline

Claims (3)

[Claims] 1. A method for producing a powder by pulverizing a pulverized tourmaline having a required particle size to produce a powder, wherein the pulverized tourmaline is heated to remove an organic substance contained in the tourmaline, and then the organic substance is removed. The pulverized tourmaline, which has been removed, is finely pulverized by colliding the pulverized substances in a high-speed rotating machine using centrifugal force, and the tourmaline powder created by the pulverization is harder than tourmaline. And then finely vibrated by mixing with a polishing material for semi-finishing, and then polishing the tourmaline powder polished with the polishing material for semi-finishing having a hardness almost equal to or lower than that of tourmaline. A method for producing a spherical powder of tourmaline, characterized in that a spherical powder is produced by mixing with an abrasive and finely vibrating to produce a spherical powder. 2. The method for producing a tourmaline spherical powder according to claim 1, wherein the pulverized tourmaline is heated to remove organic substances and to change the color of the pulverized tourmaline. 3. The method for producing a tourmaline spherical powder according to claim 1, wherein a high-pressure jet stream acts on the pulverized tourmaline when the pulverized tourmaline is finely pulverized in a high-speed rotating machine.