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Apparatus and method for melting glass

A technology of melting glass and melting equipment, which is applied in the field of manufacturing mineral wool and asbestos, and can solve the problems of not being able to withstand the high temperature of melting stones

Active Publication Date: 2017-05-31
ISOVER SAINT GOBAIN SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because traditional refractory furnaces used to melt glass cannot withstand the high temperatures necessary to melt stone

Method used

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  • Apparatus and method for melting glass

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Embodiment Construction

[0044] This plant comprises a melting tank 1 and a rapid heating tank 2, which is located downstream of the melting tank. The vitrifiable material is introduced into the melting tank 1 via a feeder 3 . The melting tank 1 and the heating tank 2 comprise submerged burners 8,9 at their bottom. In the respective tank 1 , 2 the fill level of the glass pool 4 , 5 is determined by the position of the overflow 6 , 7 through which the liquid glass flows out. The liquid glass obtained at the outlet of the melting tank 1 flows directly through the overflow 6 into the melting tank 2 where it rises from the temperature T 1 heated to temperature T 2 . Both tanks comprise metal walls penetrated by an internal duct system 10 in which the coolant circulates. Active cooling of the walls results in the formation of a layer of solidified glass 11 which separates the metal walls from the glass pool.

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Abstract

The invention relates to a plant for melting glass or stone, comprising: - a first tank (1), called a melting tank, with an inlet for vitrified material (3), heating means (9), a liquid glass outlet (6), a heating device capable of heating the vitrifiable material until a liquid glass is obtained, and - a second tank (2) downstream of the melting tank, called a heating tank, having metal walls, The metal walls are not covered by refractory insulation and are provided with an internal duct system allowing the circulation of the coolant and a number of submerged burner injectors (8), said heating tank comprising a liquid glass outlet in the form of an overflow (7), It limits the height of the glass pool in the heating tank to values ​​between 50 mm and 300 mm. The invention also relates to a process for melting glass or stone using such a melting device.

Description

technical field [0001] The present invention relates to an apparatus for melting glass or stone, in particular for the manufacture of mineral wool, preferably asbestos, the apparatus comprising a melting unit and a high-temperature rapid heating unit, and also to an apparatus for melting glass or stone with such an apparatus craft. Background technique [0002] Melting stone (basalt or blast furnace slag) typically requires heating the raw material to temperatures significantly higher than melting standard glass. It is traditionally performed in cupola furnaces, with large quantities of coke heated to temperatures close to 1500°C. This is because traditional refractory furnaces used to melt glass cannot withstand the high temperatures necessary to melt stone. [0003] The applicant has proposed, in recent years, in French application 1251170, filed 02.08.2012, a novel furnace which makes it possible to carry out the melting of stones in a submerged burner furnace at high t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/04C03B5/235C03B5/44F27B3/00C03B5/26
CPCC03B5/2356C03B5/04C03B5/265C03B5/44C03B2211/70C03B5/20C03B2211/22F27B3/04F27B3/045F27B3/205Y02P10/143C03B5/182C03B2211/23C03B2211/40
Inventor Y.勒弗雷尔F.罗佩佩M.拉耶G.维勒鲁瓦德加尔豪
Owner ISOVER SAINT GOBAIN SA