Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Producing or treating magnetic product precursor thereof
Reexamination Certificate
1999-12-14
2001-07-24
Derrington, James (Department: 1731)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Producing or treating magnetic product precursor thereof
C264S430000, C264S434000, C252S062550, C252S062560, C252S062580, C252S062590, C252S062600, C252S062630, C252S062640
Reexamination Certificate
active
06264875
ABSTRACT:
BACKGROUND OF THE INVENTION
Technical Field and Prior Art of Invention
The present invention relates to the preparation of multi-purpose magnetized and sintered ceramics, more specifically, to ceramics having functions of bio-activity, including keeping food fresh, and purifying waste water.
Currently, a physically or chemically treated natural ore is used for promotion of health and bio-activation as well as industrialization extended to such uses as medical subjects, water purification and architectural materials.
There are many examples of the effects of wavelengths slightly longer than infrared, referred to herein as far-IR, from installing molded and sintered ceramics onto floors of a car or living room, in which far-IR radiated from the ceramics can promote human metabolism to prevent diseases; to putting the ceramics into aquariums or a fish farm, where far-IR can accelerate the growth of fishes and prevent fish diseases; to putting the ceramics into a refrigerator, where far-IR can keep foods such as vegetables and fruits fresh for a long period. In addition, applying these ceramics to kitchenware, original food taste and nutrition may be kept longer.
Main materials for the above-mentioned ceramics are mostly Maek-Ban Stone (far-IR emitting stone; similar with a shape of barley) and soft sericite with other various constituents. As an example, Japanese Pat. No. Hei 1-299691, in which a method for preparing ceramic materials is that of adding silica and alumina into powder of Maek-Ban Stone(80-90% by weight), consisting of silicon anhydride, aluminum oxide, titanium oxide, magnesium oxide, potassium oxide, sodium oxide and manganese anhydride, and pulverizing it and adding water glass to it and molding and sintering it at the temperature of 1,400-1,600° C. to yield the final ceramic product; this final product is usually used as a filter for water purification. However, even though this ceramic product is easy to mold to any kinds of shapes, the activity of activation constituents is reduced.
Also, a couple of patents for far-IR ceramics are introduced in Korean Pat. No. 96-22326, which mention preparation of ceramics, comprising the steps of: mixing powders of loess, clay, and Maek-Ban Stone which radiates far IR spontaneously, and mixing with an artemisia, an oriental medicine herb, to obtain far-IR radiating powders; and in Korean Pat. No. 97-59144, mixing soft sericite, alumina, and Maek-Ban Stone and pulverizing and sintering it, and pulverizing again at a proper size, adding sulfur and salt, and secondary sintering at 1500-1600° C. for 48-72 hours, again pulverizing it in 500 mesh to obtain the final ceramic product. In addition, Japanese Pat. No. Sho 53-44928 and Korean Pat. No. 98-2434 and No. 92-14735 all have some efficiency problems due to use of pulverized natural Maek-Ban Stone and a soft sericite without a treatment or with materials reducing an activity of activation constituents.
DISCLOSURE OF THE INVENTION
The purpose of this invention is to solve the above problems and to prepare excellent ceramics providing a high degree of food freshness. Another purpose of this invention is to provide the ceramics with a deodorizing effect and a water purification effect.
BEST MODE FOR CARRYING OUT THE INVENTION
The method according to the present invention for preparing ceramics comprises the steps of: adding water to the mixture of Maek-Ban Stone and soft sericite and maturing it at a room temperature for 1-5 days; compressing and molding it; sintering for 4-6 hours at 720-790° C.; pulverizing it into powder at the size of 230-550 mesh; irradiating the powder with 800-1,200 gauss of magnetic field; adding 10-40 parts by weight of tourmaline, and 10-20 parts by weight of sepiolite powder to 100 parts by weight of the magnetized ceramic powder obtained and stirring; compressing and molding it; sintering for 1-5 hours at 600-690° C.; pulverizing into powder at the size of 200-500 mesh; and irradiating it with 1,200-1,400 gauss of magnetic field.
Also, another method for preparing the ceramic product is that of adding water to the magnetized and sintered ceramic powder and compressing/molding and sintering it at 400-600° C. to be solidified and then also adding an affinity material with a living body such as loess or clay as a bonding agent and molding and drying.
Hereafter, the present invention is explained in detail.
Maek-Ban Stone and soft sericite, which are found in and around Pohang City of South Korea, consist of silicic acid anhydride and aluminum oxide as a major constituent and are well known as natural ores containing various kinds of minerals for improving the growth of plants as well as activating a metabolism of human body; these materials are used in the present invention. For the application of water treatment, they have a function of water purification by ion exchanging and absorption of the water and provide water containing minerals as a result of mineral elution. To enhance efficiency of the ion exchanging or absorption, the size of 250-350 mesh is preferred and the proper mixing ratio is 60-70% by weight (hereafter, “% by weight” is abbreviated to “%”) of Maek-Ban Stone and 30-40% of soft sericite.
Tourmaline, a mineral stone consisting of cyclo silicate including Boron, has electrical properties of piezoelectricity and pyroelectricity and also has various colors such as earthlike, blue earthlike, dark brown, blue, green, red and pink. The piezoelectricity is an electrical phenomenon wherein an electrical polarization occurs in the symmetrical crystal, which has a defect in the middle of crystal, when this crystal is subjected to pressure at a specific direction. Pyroelectricity is another electrical phenomenon wherein opposite electrification occurs at each end of the polar axes of the crystal, when the crystal is subjected to a temperature variation.
It is inferred that a tourmaline might be an ion crystal having both positive and negative electric charges because it shows a special electrical phenomenon depending on the temperature. The lattice of common ion crystal is regularly arranged but the lattice of tourmaline is distorted. It is called a spontaneous distortion. In case of an ion crystal having an electric charge, its lattice distortion induces a distorted vibration pattern and affects the emitted electrons and, therefore, it loses its neutral state and shows different electric charges.
Due to the above reason, when polar substances are put into an electric field, electric polarization occurs and consequently, a static electricity is generated. As receiving an electromagnetic wave radiated from the sun, so they permanently emit subtle electric charge and the accumulation of these electrical charges raises a temperature. Since the hydroxyl ion(H
3
O
2
−
) is produced by the electrolysis of water, it activates water. In addition, by removing bad smells from the air, it helps human metabolism.
A Sepiolite is a fiber substance consisting of Si
12
MgO
3
O(OH
2
)
4
.8H
2
O and having an octahedral structure with magnesium in the middle of the square. Because this fiber substance has many tiny holes, contrary to a clay, it can absorb water in amounts up to 20 times its weight, and has many different kinds of geometrical structures which absorb harmful substances from the air. The mixture of 100 parts by weight of magnetized and sintered ceramic product, 10-40 parts by weight of tourmaline powder, and 10-20 parts by weight of sepiolite powder can provide many functions such as an ionization, an electrical phenomenon, absorption, and adsorption.
The magnetized and sintered ceramic powder above described is prepared at the preferable size of 230-550 mesh, as it is not easy to stir and mix above this size.
In case of below 10 parts by weight of tourmaline in this ceramic powder, as the spontaneous distortion decreases and consequently loses its electrical properties, the hydroxyl ion (H
3
O
2
−
) can not be produced and so water can not be activated. In case of over 40 parts by weight, it is difficult to mix with other materials.
In c
Derrington James
Jacobson & Holman PLLC
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