KR101536600B1 - Fireproof brick for fireplace and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a fire resistant brick for a fireplace and a method for producing the same and, more specifically, to a fire resistant brick for a fireplace and a method for producing the same, wherein functionalities for health are improved by using environmentally-friendly ocher as a main ingredient. According to the present invention, ocher is used as a main ingredient, and silica stone and alumina are mixed therewith at a particular ratio to be molded into a particular shape. A platinum catalyst is coated, dried, and plasticized on a molded product. Bursting of a fire resistant brick which has ocher as a main ingredient can be prevented. At the same time, fire resistant and heat storing functions can be maximized.

Description

FIELD OF THE INVENTION [0001] The present invention relates to fireproof bricks and fireproof bricks,

The present invention relates to a refractory brick for fireplaces and a method of manufacturing the refractory brick, and more particularly, to a refractory brick for wall blades having improved functionality for health by using environmentally friendly loess as a main material and a method for manufacturing the refractory brick.

Generally, refractory bricks are mainly used in incinerators or incineration facilities for burning off wastes to be incinerated as disclosed in Korean Patent Registration No. 10-0859588 (Sep. 16, 2008), and Korean Patent Publication No. 2011- 0077050 (July 07, 2011), it is being used for a wire pre-treatment facility for charging a wire as a steelmaking process facility.

In recent years, refractory bricks using loess are being used as bricks for residential facilities due to environmental friendliness and well-being trends.

The refractory bricks for the above-mentioned residential facilities may be used for the exterior wall of the residential facility or for the fireplace installed in the interior of the stock market facility.

The refractory bricks to be used for such residential facilities and fireplaces include a raw material blending step, a kneading step of evenly mixing the raw materials, a step of molding into a desired shape, a step of firing the molded material at high temperature And three types of clay refractory bricks, high purity alumina refractory bricks, and vermiculite boards are used. However, the following disadvantages exist.

First, the clay-refractory brick is manufactured by hardly firing a raw material which is a mixture of refractory clay and gauzo shamoto based on silica alumina containing 25 to 40% of Al2O3, and is most widely used product However, when it is used for fireplace fireproofing, it is too hard to shape and difficult to shape.

Second, the high-purity alumina refractory bricks are manufactured in order of particle size adjustment, high-pressure molding, high-temperature firing and the like using alumina as a main raw material, and have excellent softening point during solidification, excellent creep resistance and abrasion resistance, But it is disadvantageous in that it is not suitable for the fireproofing of a fireplace because of the disadvantage that the cost is too high and the manufacturing cost is greatly increased.

Third, Vermiculite board product is a product obtained by crushing mica ore and kneading silica and alumina binder, and burning it. It is most used for refractory of fireplace now, and is easy to process and lightweight. There is a fatal disadvantage that the function is insufficient and the strength is so weak that the product is worn out within a short period of time (one year to two years), or the product is broken due to cracks, thereby causing a problem that the fireplace needs to be reworked.

DISCLOSURE OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a method for manufacturing a steel sheet, which comprises the steps of kneading silica and alumina at a predetermined ratio, It is an object of the present invention to provide a refractory brick exclusively for a fireplace and a method for manufacturing the refractory brick for preventing fire and explosion of the refractory brick, .

One embodiment of the present invention for achieving the above object is to provide a refractory brick product which comprises a mixture of silica and alumina in a predetermined ratio with yellow ocher as a main component, And then drying and firing the fire-resistant brick for fireplaces.

Particularly, the refractory brick is formed in a structure having pores or spaces for heat storage inside the refractory bricks.

Preferably, the mixing ratio of the loess, silica and alumina is 92 wt% of loess, 5 wt% of silica, and 3 wt% of alumina.

According to another aspect of the present invention, there is provided a method for manufacturing a steel sheet, comprising: mixing and blending the yellow loess with silica and alumina in an amount of 92 wt%: 5 wt%: 3 wt%; Molding the kneaded material into a refractory brick having pores and spaces for heat storage; Uniformly applying a platinum catalyst to the surface of the molded article; A drying step of drying the molded product to which the platinum catalyst is applied; A firing step of firing the dried molded product; The present invention also provides a method for manufacturing a refractory brick for a fireplace, comprising the steps of:

Preferably, the drying step is performed at a temperature of 90 ° C to 100 ° C for 24 hours or more.

Also, the firing step is characterized in that the firing step is performed at 800 ° C or higher for a period of time.

Through the above-mentioned means for solving the problems, the present invention provides the following effects.

According to the present invention, by kneading a mixture of silica and alumina in a predetermined ratio with the use of yellow clay as a base material, molding the mixture into a predetermined shape, and molding the resulting mixture into a structure having pores or spaces having heat storage therein, It is possible to easily prevent the deterioration of the refractory brick, which is the main material of the loess, by performing the buffering action due to the expansion in the inner pores and spaces.

Particularly, since pores and spaces formed in the refractory brick of the present invention can maximize the heat accumulating function peculiar to the fire and heat with respect to fire and heat, it is possible to heat the room for a long time, thereby minimizing the firewood raw material and its cost .

Further, by applying a platinum catalyst to the surface of the molded product and subjecting it to a drying and firing process, it is possible to remove sulfur dioxide and the like generated during combustion by the platinum catalyst, and to increase the temperature of the fire- .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram showing a manufacturing process of a conventional fire-
2 is a process diagram showing a manufacturing process of a refractory brick for a fireplace according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As is well known, a fireplace is installed on an indoor wall surface of a living room or the like to heat indoor space by combustion heat for burning harmony and the like. Since the indoor air is heated by simply the heat of combustion transmitted by natural convection, However, there is a drawback in that it takes a long time to heat the entire space of the room, and there is a disadvantage in that fuel consumption is large compared with the heating efficiency because there is no heat storage function.

The present invention is to provide a refractory brick mainly made of loess for a fireplace, in which the temperature and the ambient temperature of the fireplace can be increased within a short time, and particularly, the heating is maintained for a long time by the heat accumulating function have.

To this end, the present invention is characterized in that the platinum catalyst is uniformly coated on the surface of a refractory brick product molded into a predetermined shape after kneading silica and alumina at a predetermined ratio with yellow clay as a main component, followed by drying and firing It is intended to provide refractory bricks for fireplaces only.

Preferably, when the loess is mixed with the silica and alumina at a certain ratio, they are mixed at a ratio of 92 wt% of loess, 5 wt% of zeolite, 3 wt% of alumina and the like.

Originally, the loess itself contains silica and alumina, but the reason for further mixing of silica and alumina is to increase the emission of far-infrared rays and anion generation, especially after the silica and alumina are kneaded, react rapidly with the platinum catalyst applied on the product surface This is because the temperature of the firebox can be raised to the maximum temperature within the shortest time.

The reason why the mixing ratio is limited to 92 wt% of loess, 5 wt% of zircon, and 3 wt% of alumina is because the temperature of the fireplace is rapidly increased and the capacity for storing heat for a long time is maximized. The mixing ratio indicating the heat efficiency is derived from the experiment.

The platinum catalyst has a function of exothermic to rapidly raise the temperature of the refractory brick itself by receiving heat at the time of burning refractory or the like, and functions to remove sulfur dioxide and the like generated during combustion.

Particularly, the refractory brick is formed into a structure having pores or spaces for heat storage in the molding step, for example, a pipe or the like is inserted during molding, a pipe is taken out after molding, The space is formed, or the inlet and the outlet of the hole are filled to have a sealed heat storage space.

As the heat storage space is formed in the refractory bricks, the decompression of the refractory bricks due to the expansion of the internal pores and spaces in the high temperature firing step can be easily prevented.

Therefore, when the refractory brick of the present invention is stacked on the inner wall surface of the fireplace, the firebox in the fireplace is transferred to the refractory brick, and the refractory brick which receives the heat is heated within a short time due to heat generation and heat accumulation unique to the loess, Height function.

Particularly, since fire and heat are stored in the pores and spaces formed in the refractory bricks, indoor heating can be performed for a long time, thereby minimizing firewood raw materials and their costs.

In addition, since the platinum catalyst is applied to the surface of the molded product and subjected to a drying and firing process, the combustion gas (for example, sulfur dioxide) generated during combustion can be adsorbed and removed by the platinum catalyst, And the ambient temperature can be increased within a short time.

Hereinafter, a manufacturing process of the refractory bricks for fireplaces according to the present invention will be described.

First, 5 wt% of silica and 3 wt% of alumina are mixed with 92 wt% of the loess, and kneaded.

As described above, the mixing ratio is limited to 92 wt% of loess, 5 wt% of zircon, and 3 wt% of alumina. This is because a large number of tests are performed to maximize the performance of long- The mixing ratio, which represents the highest thermal efficiency, is obtained from the experiment.

Next, the step of molding the kneaded mixture of the yellow loess, silica and alumina into a desired shape capable of being stacked on the wall surface of the fireplace, and molding the structure into a structure having pores or spaces for heat storage therein.

Preferably, the method for forming the pores or spaces for heat storage in the refractory bricks in the refractory brick molding step includes the steps of inserting a pipe or the like into the molded product, withdrawing the pipe after molding, Or the inlet and the outlet of the heat storage hole are filled to have a sealed heat storage space.

Then, a step of uniformly applying a platinum catalyst to the surface of the refractory brick product molded with the above-described structure having pores or spaces for heat storage proceeds.

The platinum catalyst functions to increase the efficiency of heat transfer at the time of combustion and to adsorb and remove combustion gases (for example, sulfur dioxide) generated during combustion, thereby increasing the temperature of the fire-retarding chamber and its surrounding temperature within a short time.

Next, a low-temperature drying step for drying the molded product coated with the platinum catalyst proceeds.

Preferably, the molded product to which the platinum catalyst has been applied is placed in an oven and dried at 90 ° C to 100 ° C for at least 24 hours.

At this time, the step of drying the molded product coated with the platinum catalyst at a temperature of 90 ° C to 100 ° C for more than 24 hours is a step of solving the problem of warpage of the yellowish fire-resistant brick by firing at 800 ° C or more immediately in the electric furnace , And drying at a low temperature (90 ° C to 100 ° C) for 24 hours or more.

Finally, the dried molded product is placed in an electric furnace and baked at a high temperature of 800 DEG C or higher for 30 hours to complete the final refractory brick dedicated to the fireplace.

In this case, since the heat storage space is formed in the refractory bricks, even when the refractory bricks are expanded during the high temperature firing step, the buffer pores are formed due to the expansion in the internal pores and the heat storage space. Can be easily prevented.

When the refractory brick of the present invention thus manufactured is stacked and built on the inner wall surface of the fireplace, the firebox in the fireplace is transferred to the refractory bricks, and the refractory bricks receiving the heat are heated in a short time due to heat generation and storage heat peculiar to the loess, It has the function of increasing the temperature, and it is possible to maximize the storage heat by adding the heat storage function of the heat accumulation space to the special heat storage function of the loess against fire and heat, and it is possible to provide the advantage of heating the room for a long time.

Claims (6)

A platinum catalyst was uniformly applied to the surface of a refractory brick product obtained by mixing and kneading 92 wt% of loess, 5 wt% of zircon, and 3 wt% of alumina into a structure having pores or spaces for heat storage therein, followed by drying and firing Fire-resistant fire-resistant bricks.
delete delete Mixing and kneading yellow earth, silica and alumina, respectively, in an amount of 92 wt%: 5 wt%: 3 wt%;
Molding the kneaded material into a refractory brick having pores and spaces for heat storage;
Uniformly applying a platinum catalyst to the surface of the molded article;
A drying step of drying the molded product to which the platinum catalyst is applied;
A firing step of firing the dried molded product;
Wherein the refractory brick is made of a metal.
The method of claim 4,
Wherein the drying step is carried out at 90 to 100 占 폚 for 24 hours or more.
The method of claim 4,
Wherein the firing step is performed at 800 ° C or more for 30 hours.

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