JP4111568B2 - Method for producing rock wool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a process for effectively using general leaf waste.
[0002]
[Prior art]
Conventionally, when general waste containing glass is discarded, it becomes incineration ash, and the volume is reduced to almost 10%. Furthermore, when this incinerated ash is heated at a high temperature of 1400 ° C. to 1600 ° C., vitrification proceeds and a molten slag is formed. At this time, the volume of incinerated ash is reduced to 1/3. And general waste was sent to landfill without further processing.
[0003]
General waste was mainly reclaimed on the island of dreams or buried in a small valley in the mountains.
[0004]
Or, in general waste, glass bottles and the like have a large volume, and even if they are packed in a truck 4 ton car, they carry air, and the actual weight is about 600 kg. In order to reduce this, some glass crushed and culleted are being promoted.
[0005]
There is a method of mixing glass cullet with cement to make it a floor board, but since cement shows high alkalinity with a pH of 12-13, there is a problem that the surface loses its gloss as a seed stone and falls off. . There are also safety issues such as injury when a child falls.
[0006]
Molten slag made from general waste is based on the same silica as glass, but also contains other metals and compounds.
[0007]
[Problems to be solved by the invention]
<A> The present invention is to effectively use general waste.
<B> The present invention is to make ordinary waste into rock wool.
[0008]
[Means for Solving the Invention]
The present invention relates to a method for producing rock wool using general waste containing glass as a raw material, and incineration ash obtained by firing general waste is fired at a high temperature to produce molten slag, and the surface of the molten slag the by irradiation with locally high power laser to melt, characterized in that to produce a lot of yarn linear by skipping melted portion at a high speed of the air at the same time, a manufacturing how rock wool.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
<A> Overview of rock wool production To produce rock wool from general waste, as shown in FIG. 1, the general waste is fired to obtain incinerated ash (S2). Further, the incinerated ash is fired at a high temperature of 1400 ° C. to 1600 ° C. (S3) to generate molten slag (S4). The molten slag is melted in an electric furnace and dropped (S5). As shown in FIG. 2, the drops are spun into fibers by high-speed spin 1 (S6), fibers are removed from high-speed spin 1 with high-speed air (S6), and rock wool is manufactured (S7). The rock wool manufactured in this way is used as a heat insulating material or a sound absorbing material for buildings.
[0011]
<B> Production of incineration ash General incineration waste is baked in a stalker furnace or fluidized bed furnace to produce incineration ash.
[0012]
A stalker furnace is a furnace with a large number of holes in the same way as the seven wheels. It is burned by putting ordinary waste in it and burning it slowly. In this case, there is a drawback that fine ash accumulates.
[0013]
Fluidized bed furnaces are made by burning sand like stone-baked potatoes, and even the same garbage can be burned at an instant. Since the sand protects the furnace, the furnace is less likely to be damaged and has a uniform temperature.
[0014]
<C> Formation of molten slag When the incinerated ash is baked at a high temperature of 1400 ° C. to 1600 ° C. in a furnace, vitrification proceeds and a molten slag is formed. Thereby, the volume is reduced to 10%. At this time, the volume of incinerated ash is reduced to 1/3.
[0015]
Addition of ash baked beef bone into molten slag stabilizes the melting point and quality, and changes to a sticky and good material. In addition, manufacturing management becomes stable and easy.
[0016]
<D> Formation of Rock Wool Foreign matter is removed from the molten slag, and it is put in a high temperature electric furnace and melted at a high temperature. The slag melted at high temperature is dropped in a streak pattern on the high-speed spin. When molten slag scatters on a metal that rotates at high speed, it is blown away by high-speed air to produce rock wool.
[0017]
To make rock wool by melting molten slag, a kettle with high heat resistance is required. Therefore, rock wool is formed when the temperature is increased by 200 ° C. to 300 ° C. using an electric furnace of a steel manufacturer.
[0018]
Alternatively, a laser is used as a method of making rock wool from molten slag at a stretch. When a high-power laser of, for example, 1 kw or more is applied to the granular molten slag, melting is performed only at the fiberized place, and when it is locally operated with high-speed gas / air, the fiber is made like a cotton candy. As the laser 2, for example, a high output laser such as CO ₂ , CO, YAG, or a solid laser is used.
[0019]
When the molten slag 4 is irradiated with the laser 2 as shown in FIG. 3A, the molten slag 4 is melted as shown in FIG. When high-speed gas is sprayed there, the molten slag 4 is scattered as shown in FIG. As shown in FIG. 3 (D), the fiberized and scattered materials are collected to form rock wool 5, which is used as a heat insulating material.
[0020]
【The invention's effect】
<I> Rock wool that can be used as a heat insulating material or a sound absorbing material for buildings can be manufactured by effectively utilizing general waste.
[Brief description of the drawings]
[Fig. 1] Flow chart of rock wool production [Fig. 2] Explanatory diagram of high-speed spin [Fig. 3] Explanatory diagram of laser wool production method [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... High-speed spin 2 ... Laser 3 ... High-speed air 4 ... Molten slag 5 ... Rock wool

Claims (1)

In the manufacturing method of rock wool using general waste containing glass as raw material, incinerated ash obtained by baking general waste is fired at high temperature to produce molten slag, and the surface of the molten slag is locally By irradiating with a high-power laser, it is melted, and at the same time, it is characterized by creating a lot of linear yarn by flying the molten part with high-speed air,
A method for producing rock wool.

Images