LIGHTWEIGHT MULLITE BRICK characteristics:
Low thermal conductivity, low heat capacity; high purity, low impurity content; high temperature resistance, direct flame contact; high strength, and excellent thermal shock resistance; can be cut at will.
The mullite ceiling of the brick tunnel kiln includes multiple mullite groups, each group of mullite group is composed of two mullite bricks, mullite T-shaped pendants and metal hooks. The mullite T The shaped pendant includes a plug-in board, a connecting block is arranged on the plug-in board, and a metal hook is arranged on the connecting block. Slots, the mullite T-shaped slots provided on the two mullite ceiling tiles of each mullite group are respectively provided on the two ends of the insert board. It has the advantages of light weight, convenient installation, disassembly and replacement, good heat endurance, and the metal hook is not easy to be corroded and damaged.
The mullite ceiling of the brick tunnel kiln is characterized in that it includes multiple mullite groups, each group of mullite group is composed of two mullite ceiling tiles, mullite T-shaped pendants and metal hooks.
For the ceiling of the sintered brick production line, mullite ceiling tiles can be used. The price-performance ratio of mullite is not bad, and it has been used a lot in recent years. The technology is mature, the performance is stable, and the price is high (a piece of 9 kg, 25~30 yuan/piece, without hanging parts, size specifications: 300x150x200, 310x180x100 and other different specifications), the unit price of this mullite ceiling tile is 2600 per ton~ Around 2900 yuan, but the density is less than 1, about 0.85 to 0.95;
Compared with traditional ceiling refractory bricks, the density of special-shaped refractory bricks is above 2.2 and above 1200 per ton. Converted into volume, it is almost the same. The price/performance ratio is almost the same.
(The refractory fiber folding module ceiling, after all, has poor corrosion resistance and durability. When encountering raw materials with high sulfur content and large salt and alkali dust, the durability is extremely poor, so use as little as possible)
The advantages of mullite:
Light weight, easy to install and transport, easy to install, mullite is light in transportation, and does not break during transportation; refractory bricks are severely broken, and installation is laborious.
Mullite has better thermal insulation performance and better light-weight thermal insulation performance; refractory bricks have only thermal insulation, high thermal conductivity, and almost no thermal insulation.
Mullite has small thermal expansion, almost no thermal expansion, the volume does not change at high temperatures and low temperatures, and the refractory bricks are severely cracked;
Mullite has almost no swelling due to moisture absorption. There are many problems when refractory bricks stop the kiln and start the kiln;
Mullite has good durability, it won't break if it is used for many years; it has better stability.
Mullite hooks, hanging parts, secondary beams, and large beams can be smaller, saving costs;
The mullite insulation layer can be thinner and cost-saving, the temperature at the top of the kiln is lower, there is no gap, no expansion, and lightweight insulation
