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Glass YaoChi kiln refractory material application

Number of visits: Date:8/18/2016

  Glass kiln the highest temperature of melt pool is 1570 ~ 1610 ℃. Safety limit usually depends on the specific silica glass composition and self-closed and softening point, silica brick at 1620 ℃ begins to soften and drop. Of the silica self-closed and general use on the top of the glass without the use of other, more high temperature resistant material, silica reason is not only have the high temperature strength, its ablative material is compatible with the glass, and other refractory materials are easy to produce not melting of stones and other inclusions.

  Under the parapet walls and glass liquid level, now mostly use density is big, very dense refractory glass, its ability to resist erosion of glass fluid, is far better than the refractory materials used in the past. Below the liquid surface in the molten pool glass all refractory materials, because of its short service life, especially in the glass surface at the maximum corrosion rate, therefore, must be in the outside for forced cooling. With the ageing of the furnace, when other dangerous parts have widened, also want to add cooling air in these parts, and gradually increase the volume.

  Any piece of refractory brick and thermal glass contact surface is the cause for defects, therefore, furnace design skill lies in as much as possible to avoid cover a piece of refractory material, make sure it has a surface exposed to air, so that the heat out. Such as kiln bottom must not allowed to float in order to avoid the glass into the brick paving brick, described earlier silica covered with thermal insulation material on the self-closed kiln.

  From the backend of melt pool in the batch and floating forward until completely melting, usually in the third to the area of the crater was completely melted. Furnace hot spots are usually in the middle, and cooperate with cold material is directly proportional to the mass displacement of forward, may move to the third place of the crater.

  Refractory erosion is the worst place in floating windrow of the first two of the crater area, its lattice is also the most easily blocked. Clarifier is the lightest erosion, this area is usually without fire.

  Bridge wall's role is to distinguish between two different temperature by, also used as the skimmer, glass is through the outflow discharge hole.

  Discharge hole plays a big role in cooling, it makes the glass from the melting temperature of 1540 ~ 1590 ℃ down to the clarification pool of about 1260 ~ 1310 ℃ temperature. Feeding is a temperature control of channels, connected to clarify the discharge hole, its role is to make the glass temperature down to about 1100 ℃, for drip molding needs.

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