炭化ケイ素レンガは、SiCを主原料とする耐火物です。モース硬度9。酸性スラグに対してより安定です。SiC 72% ~ 99%を含む。クレイボンド、Si3N4ボンド、サイアロンボンド、β-SiCボンド、Si2ON2ボンド、再結晶炭化ケイ素レンガに分けられる。一般に、黒色炭化ケイ素（SiC含有量96%以上）を原料とし、バインダー（またはバインダーなし）を加え、バッチ、混合、成形、焼成の工程を経て作られる。主な品種は、酸化物結合炭化ケイ素れんが、炭素結合炭化ケイ素れんが、窒化物結合炭化ケイ素れんが、自己結合炭化ケイ素れんが、再結晶炭化ケイ素れんが、半炭化ケイ素れんがです。良好な耐摩耗性、耐食性、高温強度、良好な熱衝撃安定性、高い熱伝導率、小さな熱膨張係数の特性を持っています。高性能耐火物です。
| アイテム/グレード | GM1650 | GM1600 | GM1550 |
|---|---|---|---|
| ω（Al2O3) ≥/% | 65 | 63 | 60 |
| かさ密度 ≥/(g/cm³) | 2.65 | 2.60 | 2.55 |
| 見掛け気孔率 ≤/% | 17 | 17 | 19 |
| 冷間圧壊強さ ≥/MPa | 85 | 90 | 90 |
| 0.2MPa 耐屈折力T0.6 ≥/℃ | 1650 | 1600 | 1550 |
| 耐熱衝撃性（1100℃、水冷）≥/回 | 10 | 10 | 12 |
| 常温での耐摩耗性 ≥/cm3 | 5 | ||
| 熱膨張/% | / | ||
1.High Temperature Stability
2.Excellent Fire Resistance
3.High Strength and Wear Resistance
4.Excellent Thermal Conductivity
5.Good Thermal Shock Stability
主に非鉄冶金レトルト、アルミ鋳造金型、電気炉ライニング、アルミ電解セルライニング、セラミックキルン家具、熱交換器などの製造に使用されます。
Clay-bonded silicon carbide bricks are refractory products fired with silicon carbide as the main raw material and clay as the binder. It is characterized by high thermal conductivity, small thermal expansion coefficient, good thermal shock resistance and wear resistance, and is the earliest developed type of silicon carbide brick.
This product is used as kiln furniture for ceramic kiln (shelf board, bracket, sagger, etc.), muffle cover for muffle furnace, lining brick for aluminum refining furnace, retort tank for zinc distillation furnace, cooler for cement rotary kiln, etc.
Silicon nitride bonded silicon carbide brick is a refractory product made of SiC and Si powder and fired by nitriding. It is characterized by Si3N4 as the binding phase. Si3N4 exists between SiC grains in the form of acicular or fibrous crystals, and is an important new refractory material.
Silicon nitride combined with silicon carbide bricks are mainly used as the inner lining of the lower part of the blast furnace body, which is more than double the service life of traditional refractory materials. In addition, it can be used as the lining of the aluminum reduction electrolytic cell and ceramic kiln furniture, which has energy saving, improved service life, and It has the advantages of polluting the environment, and can also be used as a brick for the water-cooled pipe sleeve of the tuyere of a blast furnace.