BG110737A - MINERAL FIBER PREPARATION DEVICE - Google Patents

Abstract

     The mineral fiber device is used in the manufacture of building materials, in particular in the production of mineral rocks of rock breeds for the needs of metallurgy, the chemical industry and other areas in which the fiber is produced from melted rock breeds. It consists of a fiber distributor, a filler (1) with a working opening (2), an internal burner (3) inserted in a spindle (4), an annular combustion chamber (5) (6) and by an engine (8) connected to the spindle (4). The fiber distribution device is embodied as a displacement disc (7) on which vertical partitions (71) are arranged in the form of rectangular triangles, the length of the smaller catheg of the triangle L of which depends on the viscosity defined by the formula: L = tg (wr n-1).

Description

MINERAL FIBER RECEIVING DEVICE

Technique • * · · · r • · · · · · · · · · · · · · · · · · · · · · · · · · · No. 111 ... 3 / 00.08.201 Or.

The invention relates to a device for the production of mineral fibers, which is used in the production of building materials, in particular for the production of mineral fibers from rocks for the needs of the metallurgy, chemical industry and others.

BACKGROUND OF THE INVENTION

A device for producing mineral fibers is known which uses the method of centrifugal filler blowing consisting of a furnace, from which the resulting melt of rock is fed as a continuous stream to a hollow vertically spindled centrifuge, at the lower end of which are internal and external. cups with openings on their side surface. Under the influence of centrifugal force, the melt penetrates through the openings in the form of thin jets, which, under the influence of the high temperature of the gas stream passing from the annular nozzle, which is concentric to the outer cup, the jets break and blow out in the form of fibers. (1)

The disadvantages of the device for producing mineral fibers are that between the outer surface of the inner cup and the inner surface of the outer cup forms an area where the melt is not heated enough, which leads to a decrease in its temperature, increase its viscosity and consequently decrease the quality of the resulting finished mineral fiber product.

• · · · · · · ·

SUMMARY OF THE INVENTION

It is an object of the invention to provide a device for the production of mineral fibers which allows the conditions to be uniformly heated for the melt throughout the volume of the outer cup.

According to the invention, this problem is solved by a mineral fiber preparation device consisting of a fiber distribution mechanism, a filler with a working opening, an internal burner inserted into the spindle, an annular combustion chamber, an external cup and an engine, connected to the spindle. The fiber distribution mechanism is designed as a distribution disk on which vertical rectangular partitions are arranged, the length of which is smaller than the triangle triangle L depends on the viscosity determined by the formula: L = tg (wrn ').

Advantages of the device for producing mineral fibers are that by improving the distribution mechanism of the fibers, a more uniform dispersion of the melt is achieved on the inner surface of the outer cup, and a uniform heating of the melt is ensured throughout the volume of the distributor cup. , as well as the stabilization of the melt by temperature and viscosity.

Description of the attached figures

The invention is explained in more detail by means of a device for producing mineral fibers using the centrifugal filler-blowing method shown in the figures, where:

In FIG. 1 is a sectional view of the construction of the device and

Figure 2 shows the shape of the distribution disk of the device.

Examples of implementation

As shown in FIGS. 1 and 2, the mineral fiber receiving device comprises a filler 1 with a working opening 2, an internal burner 3 inserted into the spindle 4, an annular combustion chamber 5 with a nozzle 51, an outer cup 6, a distribution disk 7 with vertical ribs 71 and an engine 8 connected to the spindle 4 to drive it. The vertical ribs 71 are formed as rectangular triangles, the smaller catheter being disposed at the edge of the distribution disk 7.

The device uses a centrifugal filler-blowing method to produce mineral fibers, in which the melt from the filler 1 ··

it passes through the working opening 2 and is fed to the distribution disk 7, which is coaxially mounted on the spindle 4 with the outer cup 6.

On the surface of the distribution disk 7 there are ribs 71 which provide a more uniform placement of the melt on the inner surface of the outer cup 6. In order to maintain the required temperature of the melt, respectively its viscosity, an internal burner is located in the body of the spindle 4.

3. When rotated by the engine 8 of the spindle 4 at a speed of 6000 rpm, the melt, after being hit by the distribution disk 7, is sprayed on the inner walls of the outer cup 6, on the side surface of which a plurality of working openings 61 are formed.

Under the influence of the same centrifugal forces, the melt passes through the openings 61 of the outer cup 6 as thin jets with a diameter of 600-800 microns and falls into the zone of passage of combustion products of the gas mixture from the annular combustion chamber 5. These combustion products are temperature of 14001500 ° C and passing through the nozzle 51 exits at a speed of 200 m / s by blowing out the filaments from the jets of the melt passing through the openings 61 of the outer cup 6. These mineral fibers are 2-80 microns in diameter. and a length of 1 00-500 mm.

In the proposed design of the device, the inner cup was replaced with a distribution disk 7, which created conditions for maintaining a uniform melt temperature in the area of formation of mineral fiber jets, which increases the quality of the mineral fibers obtained as a final product.

In order to distribute the melt more evenly on the inner surface of the outer cup 6, the vertical ribs 71 are shaped as rectangular triangles, the smaller catheter being disposed at the edge of the distribution disk 7. This ensures uniform heating of the melt over the entire volume of the outer cup. cup 6 with vigorous stirring, as well as its stabilization in temperature and viscosity. The height of the smaller catheter of triangle L depends on the viscosity of the melt and is determined by the following mathematical formula:

L = tg (wrn ¹ ), where w is the viscosity of the melt, d is the radius of the distribution disk, η is the amount of vertical partitions.

References:

1) WO 2007089710, class C 03 B 37/04, published on 09/08/2007.

Entry No. W ... 3 / 00.08.2010

Claims (1)

Patent Claims: 1. A mineral fiber receiving device comprising a fiber distribution mechanism, a filler with a working opening, an internal burner inserted into the spindle, an annular combustion chamber, an external cup and an engine connected to the spindle, characterized by the fact that the fiber distribution mechanism is designed as a distribution disk (7), on which vertical partitions (71) are shaped in the form of rectangular triangles, on which the length of the smaller catheter of the triangle L depends on the viscosity determined by ormula: L = tg (wrn ^'1). • · Entry No. 111 ... 3 / 00.08.2010 ABSTRACT A device for the production of mineral fibers for use in the manufacture of building materials, in particular for the production of mineral fibers from rocks for the needs of metallurgy, the chemical industry and other areas in which the fiber is made from molten rock. It consists of a fiber distribution mechanism, a filler 1 with a working opening 2, an internal burner 3 inserted into the spindle 4, a annular combustion chamber 5 with a nozzle 51, an external cup 6 and an engine 8 connected to the spindle 4 of the fibers is designed as a distribution disk 7, on which vertical partitions 71 are arranged in the form of rectangular triangles, on which the length of the smaller catheter of the triangle L depends on the viscosity determined by the formula: L = tg (wr η ' ¹ ) . The claims are formulated in 01 (one) point.