SU870360A1 - Device for outlet of silicate melts from bath furnace - Google Patents

Description

The invention relates to equipment for the production of mineral wool, in particular to devices for dispensing silicate melt from a bath furnace and a cupola, and can be used in the production of glass wool, stone casting and slag wool. a device is known that contains a feeder and a movable valve (tapping hole) with an aperture and an actuator installed in the bottom part of the feeder at an angle of 30 to the horizontal plane, and the valve opening is oval (1. The closest in technical essence and effect to the proposed device is A device for discharging mineral melt from a bath furnace containing a feeder with a vertical water-cooling panel and a movable valve (tap hole) with a hole and a shower (2. Known devices do not provide: and a stable jet to the fiber-forming unit. The cause of the Unstable jet during the melt delivery is that the Melt release through the vertical wall and at the same time as the threshold of the damper (hole) leads to the cooling of the melt on the wall and tray and its partial crystallization. the release through the bottom of the feeder melts out of the lower difficult-to-warm layers and without additional heating to the junction. The jet stream usually penetrates quickly crystalline dims melt. - When using an inclined damper, any termination of the melt delivery causes the melt to rapidly cool in the area of the damper (taphole) due to the effect of water cooling and putting the damper (taphole) into operation takes considerable time. In the known devices, the melt is overflowed over the threshold, which eliminates the constant amount of melt produced, since there is no connection with changes in the level of the melt mirror in the furnace, and any partial crystallization of the melt on the threshold entails a change in the cross-sectional area for melting and However, when changing the physicochemical properties of the melt, the amount of it is cs {laze. The purpose of the invention is to increase the reliability of operation, the ability to control the flow rate and reduce melt losses.

The goal is achieved by the fact that a device containing a feeder, a movable damper and an actuator is provided with a heated chamber with a bottom opening installed on the outside of the feeder and rigidly connected to the damper.

FIG. 1 shows the proposed arrangement; longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - section bb FIG. 2

The device contains a feeder 1, at the end of which a water-cooled valve 2 is installed, which has grooves 3 in which the guides of the heated chamber 4 are installed. The chamber body 5 is made of water-cooled elements and is footed from the working cavity of refractory materials. In the horizontal section of the bottom of the chamber there is a round hole b for melting 7. In the dome of the chamber a burner 8 is installed. The shutter 2 is connected to the actuator 9. Through this actuator, the chamber is raised or lowered.

The device works as follows.

The melt 7 from the feeder 1 enters the chamber 4. The horizontal portion of the bottom of the chamber with an opening 6 is located directly under the upper layer of the melt at a slight depth. Through this opening, a melt is dispensed to the fiberization unit. The surface of the melt in the chamber is heated by burning the fuel introduced through the burner 8. The exhaust gases from the chamber enter the furnace working space and with the exhaust gases of the latter through the regenerator of the furnace bath are evacuated to the atmosphere.

The arrangement of the chamber bottom with respect to the melt mirror in the feeder is kept constant.

When the fiber-forming unit stops operating, the operator raises the chamber and sets it in such a position that the horizontal bottom section with a hole for the melt vyachach is above the melt mirror, with

This will stop the melt being dispensed to the fiber-forming unit.

For melt the chamber is lowered and in this case the bottom of the chamber is located under the upper layer of the melt. Due to the fact that during the period of termination of the melt opening 6 is heated with gases, when lowering the chambers the melt is produced in the required amount in the required amount at a DIMA temperature.

Formula of Invention

A device for discharging silicate melts from a bath furnace containing a feeder, a movable damper and an actuator, characterized in that, in order to increase the reliability of work, the ability to control the flow rate and reduce melt losses, it is equipped with a heatable chamber with a bottom opening installed on the outside feeder and tightly connected to the fan.

Sources of information taken into account in the examination

1. Author's certificate of the USSR 583103, cl. From 03 To 5/26, 1974.

2. Authors certificate of the USSR 174773, cl. From 03 To 5/26, 1965 (prototype).

Claims (2)

SUMMARY OF THE INVENTION __ A device for releasing silicate melts from a bath furnace, comprising a feeder, a movable shutter and an actuator, which requires that, in order to increase the reliability of operation, the ability to control the flow rate and 30 to reduce the loss of melt, it is equipped with a heated chamber with a bottom hole mounted on the outside of the feeder and rigidly connected to the ’damper. 35 Sources of information taken into account in the examination 1. USSR copyright certificate No. 583103, cl. C 03 B 5/26, 1974. 2. Copyright certificate of the USSR 4Q »174773, cl. C 03 B 5/26, 1965 (prototype). ΦβεΖ 5-6 F?. 3