Glass kiln with refractory brick

Each part in glass tank furnace refractory application as described below.
1, the wall brick
Molten sodium calcium silicon material, boron pool kiln ideal zirconium brick wall material is fused corundum brick.33% of ZrO2 content tilt pouring brick, gate, on the following.Molten alkali free or low alkali glass fiber due to heavy acid erosion, wall brick material appropriate chooses AZS brick or dense zircon brick, also can use the fused quartz brick.
2, the bottom brick
Bottom brick to wear-resisting and have integrity.Now USES the multi-layer composite bottom structure.Multilayer structure is generally in the main level - clay brick build by laying bricks or stones under the thermal insulation layer.Clay bricks on top of the protective layer and wear-resisting layer.Protective housing with zircon ramming material or fused corundum ramming material.Wear-resisting layer on the protective layer, protect the ramming bottom, direct contact with the glass.Commonly used with good corrosion resistance, abrasion resistance performance of the fused AZS brick.The use effect of the composite bottom structure is: reduce the heat loss, prolong the life span of the bottom.In melted glass containing heavy metals (such as lead glass) or erosion heavier glass (such as milky white glass) in order to prevent leakage freely, can be in the original, wear-resisting layer and protective layer and a layer of protective layer and wear-resisting layer.The original protection layer and wear-resisting layer is also known as paving layer, can be sintered AZS brick or zircon brick.
3, charging pool brick
Brick and glass by powder feeding pool of erosion wear material layer, the influence of flow scouring and flame, so the damage is more serious.Need high temperature wear resistance corrosion resistant material, commonly used no shrinkage cavity containing ZrO2 41% zirconium fused corundum brick, brick and increase thick, strengthen air cooling.In addition to the corner brick.Other parts of the available common casting 33 - AZS brick.The lower feed liquid pool brick can consider to use pouring kaolin clay bricks.
4, discharge hole brick
Pool kiln shed the largest glass fluid velocity of the fluid inside the hole, and convection, so the wear serious, also accelerated erosion.Discharge hole cover plate, therefore, should be no shrinkage cavity AZS brick - 41 brick, discharge hole wall brick best to adopt and cover the same material.At least the using fused brick without shrinkage cavity.Used when melted boron silicate glass fused silica brick.
5, cooling pool and pool forming brick
Cooling, forming pool is melting, the clear 淸 good glass.Has entered the melting process of late.At this time.Any defects will not cause glass (including bubble, striped, stones).Cooling pool need oxidation production of 33 - AZS brick, high temperature, separating the glass and won't bring glass bubble
6, kiln top and breast wall of brick
This part of the brick damage characteristics of erosion (main play around alkaline sulfate cohesion, to form honeycomb pitting) and burning.Requires the use of alkali at high temperature steam is very stable, and has high refractoriness under load and creep properties of the material.Can choose silica brick and high quality silica brick and fused AZS brick - 33.
7, front wall and plaids wall brick
This is melting of space before and after the two walls.They also have two damage characteristics of erosion and burning.In addition, the front wall by abrasion and erosion of the batch of overflow flame and flush, it is one of the weak parts of the tank furnace.Currently using zirconium 33 # fused corundum brick.Also has a high quality silica brick and the sintered AZS complex use of (such as l-shaped hanging wall). The former face except to adopt high quality silica brick wall with air cooling is needed.
8, small furnace bricks
Small furnace brick town into the crater, furnace parts such as neck, nozzle bricks to consider.Small furnace bricks required ability of high temperature, corrosion resistance, scouring resistance, also has certain thermal shock resistance.If the producer gas burning, heat load is small, can adopt when silica brick, and even kaolin clay bricks, if burning high calorific value of fuel, heat load big, self-closed brick, side of the crater of the crater wall brick, floor tile, oblique self-closed interlining brick, brick and brick Suo mouth tongue with 33 # fused zirconium corundum brick, floor can also use the density of sintered corundum brick.
9, special parts, the selection of refractory material
Tank furnace masonry on some special parts.Such as bubbling pore, kiln, the electrode hole, inspection, measurement, etc.They have special USES and damage characteristics of alone.Bubble hole brick will be affected by rapid circulation caused by bubbling flow of strong wear and erosion.Bubble hole brick inside and outside surface of the larger temperature difference will produce mechanical stress.Easy to result in crack damage.Brick kiln hom will also suffer severe damage heat flow.These two kinds of brick can adopt oxidation production of shrinkage cavity 41 # fused zirconium corundum brick.Electrode hole brick by intense erosion cycle flow around the electrode, also caused by large temperature difference in brick and electrode cooling, produce large mechanical stress.Lead to a radial cracks around the hole brick.Reason for brick material corrosion resistance, abrasion resistance, but also has certain thermal shock resistance and high resistance.In addition to consider when select material its performance.Baby also consider glass and the conductivity of the electrode arrangement.Generally adopt oxidation production of zirconium no shrinkage cavity 41 # fused corundum brick, the material's thermal zichen resistance is poorer, consider using fused silica brick or calcining dense zircon brick.Measuring hole overflow, inspection hole brick by stove flame long-term washout, vulnerable to damage and cracking, the common custom containing zirconium 33 # fused corundum brick.