JPH1067553A - Calcination product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a calcination product excellent in heat resistance and chemical resistance, small in water absorbability and simple in a production method. SOLUTION: (1) A cement, pottery raw materials and water, or further, a heat-resistant aggregate are kneaded with each other, molded, hardened and subsequently calcined. (2) The calcination product contains an inorganic reinforcing material. (3) The calcination product is glazed. (4) The pottery raw materials used for the calcination product comprise powdery materials. (5) The cement, pottery raw materials and water comprise a cement slurry or the combination of a cement and a slurry, and are kneaded with each other, dehydrated and subsequently molded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fired product of a raw material for cement and ceramics.

[0002]

[Prior Art] Pottery, pottery, pottery, setware, and porcelain are generally used as tableware, tiles, clay pipes, vases, tiles, washbasins, toilets, and the like. -There was a problem that it took time and effort to grind and mix ceramic raw materials such as feldspar and pottery stone, finely pulverized with water, sieved, stored clay, kneaded, formed, dried and fired. Concrete and mortar, on the other hand, have the simplicity of the manufacturing method that can be achieved by simply adding water and aggregate to cement, kneading, molding, hardening, and demolding.However, when heat is applied, water of crystallization flies and breaks down. However, there is a problem in that it is easily affected by acid rain, salt water or chemicals.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a calcined product whose production method is simple and which is not easily affected by chemicals.

[0004]

Means for Solving the Problems The fired product of the first invention of the present invention is to knead cement and a ceramic material and water or further heat-resistant aggregate to form a kneaded product, and to utilize a hydration reaction after molding. After being cured by heating, the mold is removed and fired. The fired product is first hardened by the hydration reaction of the cement, the water is used for the hydration reaction, so the drying is quick, and the ceramic material is softened or melted by firing, so that it does not break down, It has low water absorption or non-water absorption and has the effect of being hardly affected by chemicals. In the present invention, the ceramic raw material means a rock similar to earth stone in natural minerals or a weathered product thereof.

[0005] The fired product of the second invention is characterized in that the fired material of the first invention contains an inorganic reinforcing material. The fired product, in addition to the function and effect of the first invention, since the fired material contains an inorganic reinforcing material such as an inorganic fiber or an inorganic fiber network, the bending strength and the tensile strength are increased,
Easy to make large baked products, less likely to be damaged during transportation.

The fired product of the third invention is characterized in that the fired material of the first and second inventions is glazed and main-baked. The fired product is non-water-absorbing because it is baked with glaze in addition to the effects of the first and second inventions.
It is resistant to chemicals such as acids and alkalis, and can be made into a fired product with excellent decorativeness by applying a picture, glazing and main firing.

The fired product of the fourth invention is characterized in that the ceramic raw material used in the fired product of the first, second and third inventions is a powder. Generally, clay as a ceramic raw material is made by kneading clay to make it easier to mold, and since it is sticky including water, it is difficult to mix it well with cement. In this case, the ceramic material and the cement can be mixed well. Cement and ceramic raw materials
Water may be kneaded at the same time, but if the cement and the ceramic material are kneaded and mixed well, and then water is added and kneaded, kneading is further improved.

In the fired product of the fifth invention, cement, ceramic raw material and water used in the fired product of the first, second and third inventions are cement slurry or cement and slurry, and are formed by kneading and then dewatering. It is characterized by the following. When the ceramic material is in the clay state, it is difficult to mix with the cement, but in the slurry state, when the slurry is stirred, the cement is gradually and uniformly added using a sieve, or when the slurry and the cement slurry are stirred, Relatively easy to mix. Press dehydration molding or centrifugal molding reduces the amount of water, so that a dense molded product can be produced and shrinkage during firing is reduced.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, cement includes Portland cement, white Portland cement, early-strength Portland cement, moderate heat Portland cement, blast furnace cement, silica cement, fly ash cement,
Alumina cement, expanded cement, fast-hardening cement, ultra-fast hardening cement, oily, geothermal well cement, etc. are used. Glass fiber, alkali resistant glass fiber,
In addition to rock wool, high heat resistant inorganic fibers such as ceramic fiber, fused silica fiber, rifrazil type glassy silica fiber, alumina, silica-based fiber, kaolin fiber, metal staple fiber, steel fiber, stainless steel fiber, etc.
Net materials made of these fibers, stainless steel wires,
Wires and bars, such as alloy steel wires and steel wires, are used.

[0010] Cement and porcelain raw materials and water or further heat-resistant aggregates (such as shavings such as chamotte, shirasu balloons, etc.)
Foamed particles such as pearlite) are kneaded to form a kneaded product, cast into a mold, molded by a centrifugal separator, molded by dehydration press, molded by vibration press, and cured using a hydration reaction. After demolding, bake and bake in an electric furnace, gas furnace or kiln.

-A When kneaded material is prepared in the embodiment, a kneaded material containing inorganic fibers is prepared by adding inorganic fibers, molded, cured using a hydration reaction, demolded, and fired in an electric furnace or the like. Thus, a fired product containing an inorganic reinforcing material such as an inorganic fiber is obtained. -B The kneaded material of the embodiment is cast into a mold in which the above-mentioned wire rod or bar material such as an alloy steel wire is arranged, molded, cured by using a hydration reaction after molding, and then demolded. Firing in a kiln or the like to obtain a fired product containing an inorganic reinforcing material such as a wire rod.

-A The baked product (unglazed) of the embodiment is glazed, and baked to obtain a glazed fired product. -B After painting the fired product (unglazed) of the embodiment, glaze is applied, and the fired product is fired to obtain a fired product with a glaze. In addition, overprinting may be performed after main baking, and overprinting may be performed.

The ceramic raw material used in the fired product according to the embodiment is a powdered ceramic raw material, and the cement and the powdered ceramic raw material are kneaded and mixed with a mixer,
Thereafter, water is added and kneaded, or the cement and powder ceramic material and water are simultaneously kneaded.

In making the kneaded material used in the fired product of the embodiment, cement or cement slurry is added to the slurry-like ceramic material and kneaded, and the mixture is dewatered by a press dewatering molding method or a centrifugal force molding method. Mold.

The fired product of the present invention may be earthenware-based, ceramic-based, stoneware-based, or porcelain-based with added cement, and the firing temperature depends on the type of ceramic. In addition, ceramic raw materials include kaolin, frog-eye clay, Kibushi clay, stoneware clay, silica stone, and other viscosifying raw materials, feldspar, pottery stone, roasting stone that expands when baked,
These mixtures can be used. In particular, when an appropriate amount of wax is added, it is possible to cope with expansion and contraction of the inorganic reinforcing material due to heat, and it is difficult for cracks to occur. The mixing ratio of the ceramic raw material to the cement is desirably the amount in which the ceramic raw material is bonded at the time of firing, and the mixing ratio can be increased if the ceramic raw material has a large particle size. As the amount of water to be added, an amount of water suitable for a molding method can be selected. Also, when molding the kneaded material,
When a nut, bolt or wire is buried, it is convenient to attach a fired product, and if fluorescent material is added to the glaze, it emits fluorescence in a dark place.

[0016]

EXAMPLE 100 parts by weight of Portland cement were mixed with 100 parts by weight of a ceramic raw material powder, kneaded with a mixer, and then kneaded with 80 parts by weight of water. The molded product was heated to 850 ° C. in an electric furnace to obtain a fired product.

[0017]

Industrial Applicability The present invention is constituted as described in detail and can be called a cement / porcelain-based fired product. Since the plasticity is reduced by the initial hydration reaction of the cement, the demolding of the molded product can be expedited. Also, the drying time can be shortened as compared with the conventional ceramics. Further, even if a steel wire such as a reinforcing bar is used as the inorganic reinforcing material, it is hardly oxidized during firing by the action of alkali.
Further, since the ceramic raw material is used, when heated, the ceramic raw material is bonded by soft bonding or welding or the like, resulting in a fired product that does not break down. If the fired product contains an inorganic reinforcing material such as an inorganic fiber, the bending strength and the tensile strength are large, making it easy to make a large-sized fired product, making it hard to be damaged during transportation and construction, and glazing or painting and glazing. The baked product is non-water-absorbing, has decorative properties, and is not easily affected by chemicals such as acids, so that it can be widely used.

Claims (5)

[Claims] 1. A kneaded product is prepared by kneading cement, a ceramic material and water or further heat-resistant aggregate, and is molded, hardened by a hydration reaction, then demolded and fired. Baked product. 2. The fired product according to claim 1, wherein an inorganic reinforcing material is contained therein. 3. The fired product according to claim 1, wherein the fired product is glazed and baked. 4. The fired product according to claim 1, wherein the ceramic material used is a powder. 5. The cement, porcelain raw material and water used are cement slurry or cement and slurry, and are molded while being dewatered after kneading.
The fired product described in 2.3.