What refractory materials are usually used in various parts of horseshoe flame kiln soda lime (bottles, utensils, bulbs, fluorescent lamps) glass pool furnaces?
Melting pool:
Pool wall: Use temperature 1400~1600℃, use AZS-33 brick TC. Selection basis: It has good corrosion resistance and thermal shock resistance for molten glass.
Pool wall with lower temperature: Use temperature <1400℃, use fused zirconium mullite. Selection basis: It has good corrosion resistance and thermal shock resistance for molten glass.
Pool bottom paving bricks: Use temperature 1300~1500℃, use fused AZS-33# brick D.C.L. Selection basis: It has good corrosion resistance and thermal shock resistance for molten glass.
Pool bottom: Use temperature <1400℃, use clay bricks or high-alumina bricks.
Feeding port: Use temperature 1400~1500℃, choose fused AZS-36# brick R.V or fused AZS-41# brick R.V. Selection basis: Strong corrosion resistance to glass;
Bubble part: Use temperature 1400~1500℃, choose fused AZS-41# brick D.C.L. Selection basis: This brick is suitable for the most corrosive part.
Electrode part: Use temperature 1400~1600℃, choose fused AZS-41#RD.C.L.
Melting pool upper structure: Upper part of the feeding port: Use temperature 1400~1500℃, choose fused AZS-36# brick R.C. Selection basis: It is resistant to erosion of refractory materials and has high corrosion resistance and thermal shock resistance to the impact of flames.
Flame mouth: Use temperature 1500~1650℃, choose fused AZS-31# or 41#R.C bricks. Selection basis: refractory erosion and flame impact.
Small furnace channel (top and side walls): use temperature 1450~1600℃, choose fused β-Al₂O₃ or high-quality silica bricks. Selection basis: no adhesion of flying materials, good resistance to alkali vapor erosion. Lattice wall: use temperature 1400~1600℃, choose fused α-Al₂O₃ bricks or fused-AZS bricks. Melting pool arch: use temperature 1300~1650℃, choose high-density silica bricks or fused AZS bricks. Hook bricks, nozzle bricks: use temperature 1500~1650℃, choose fused AZS bricks.
Working pool: pool wall: use temperature 1300~1450℃, choose fused α-Al₂O₃T.C or fused AZS (oxidation method) bricks. Selection basis: less foaming in contact with glass liquid, good anti-pollution, and the corrosion resistance at this temperature is equivalent to that of fused AZS33#. Pool bottom paving bricks: use temperature 1300~1400℃, choose fused AZS bricks V.F. Selection basis: less foaming in contact with glass liquid, good anti-pollution, and the corrosion resistance at this temperature is equivalent to that of fused AZS33#. Material channel (part below the liquid surface): choose fused α-β-Al₂O₃ bricks R.C or fused AZS (oxidation method) bricks. Selection basis: fused AZS-41# has a high ZrO₂ content and good corrosion resistance. Liquid flow hole: use temperature 1400~1500℃, choose fused AZS-41# bricks D.C.L.
Working pool upper structure: working pool arch: use temperature 1300~1450℃, choose high-quality silica bricks. Working pool foot wall: use temperature 1300~1450℃, choose silica bricks, β-Al₂O₃ bricks. Working pool feed port upper part: use temperature 1300~1400℃, choose fused β-Al₂O₃ bricks R.C, sintered mullite bricks, sillimanite bricks. Selection basis: because it does not contain glass phase, it will not pollute the glass. It has strong corrosion resistance to alkali vapor or solidified alkaline substances. Flow tunnel bridge bricks: use temperature 1400~1500℃, choose fused AZS-33#R.C, fused α-β-Al₂O₃ bricks. Selection basis: it must have good heat shock resistance and corrosion resistance. Regenerator: arch top, upper side wall: use temperature 1400~1550℃, use direct bonded magnesia chrome brick or silica brick alkaline refractory materials, selection basis: good resistance to alkaline corrosion, but poor high temperature strength. Middle and lower side walls: magnesia chrome brick, high alumina brick upper partition wall: use temperature 1200~1400℃, use direct bonded magnesia chrome brick, selection basis: good creep resistance. Middle and lower partition walls: use temperature 600~1200℃, use low porosity clay brick. Upper part of the lattice: use temperature 1300~1400℃, use high purity magnesia brick, direct bonded magnesia brick, sintered AZS brick, selection basis: high temperature change, powder flying, repeated oxidation and reduction. Middle part of the lattice: use temperature 1000~1200℃, use direct bonded magnesia chrome brick, selection basis: condensation of alkali vapor, condensation of sulfate, repeated oxidation and reduction. Isolation bricks: high alumina bricks are used. Lower part of the lattice: use temperature 600~1000℃, use low-pore clay bricks, and the selection is based on: low temperature temperature changes. Lattice support arch: use temperature 400~600℃, use low-pore clay bricks, and the selection is based on: temperature load, dust fixation, low temperature temperature changes.
Feeder: Upper space: use temperature 1300~1400℃, use fused α-β-Al₂O₃ bricks, sintered AZS bricks, sillimanite bricks, sintered mullite bricks, and the selection is based on: sillimanite bricks have less glass phase content than ordinary clay bricks, mullite crystals grow better, mullite crystals grow better, and the products have better corrosion resistance and thermal stability.
Feeder: use temperature 1250~1350℃, use fused α-β-Al₂O₃ bricks, sintered AZS bricks. Material basin: The use temperature is 1250~1350℃, and fused α-β-Al2O₃ bricks and sintered AZS bricks are used. The selection criteria are: good wear resistance, corrosion resistance, and thermal shock resistance. Punch, material bowl: The use temperature is 1050~1300℃, and fused α-β-Al2O₃ bricks, sintered AZS bricks, sillimanite bricks, and sintered mullite bricks are used.
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