コランダムムライトレンガ
Corundum-mullite bricks are high alumina refractory products consisting of corundum and mullite main crystalline phases. PER’s corundum-mullite bricks have excellent creep resistance, 高温耐性, and low apparent porosity.
PER Refractories produces both standard-sized refractory bricks and customized-shaped refractory bricks. High quality and cheap price are our advantages. You can always contact us for a free quote.
Parameters of Corundum Mullite Bricks
Corundum-mullite bricks have good high-temperature strength, high-temperature creep resistance, 耐熱衝撃性, 耐浸食性.
Typical physical and chemical properties of corundum-mullite bricks are Al2O3>85%, Fe2O3 0.45%, apparent porosity 19%, room temperature compressive strength greater than 55MPa loaded softening temperature greater than 1700 ℃, heating line change (1600 ℃, 3h) -0.1%, 耐熱衝撃性 (1100 ℃ water-cooled) greater than 30 回.
| 項目/索引 | ムライトレンガ | 溶融ムライトレンガの再焼成 | ムライトコランダムレンガ | コランダム-ムライトレンガ |
| Al2O3 | ≧70% | ≥75% | ≧80% | ≥90% |
| SiO2 | ≤25% | ≤23% | ≤18% | ≤8% |
| Fe2O3 | ≤0.5% | ≤0.5% | ≤0.5% | ≤0.3% |
| 見かけの気孔率 | ≤17% | ≤14% | ≤19% | ≤18% |
| かさ密度 | ≧2.55g/cm | ≧2.65g/cm | ≧2.70g/cm | ≧2.90g/cm |
| 冷間圧砕強度 | ≧90MPa | ≧100MPa | ≧80MPa | ≧100MPa |
| 負荷時の初期耐火度 | ≧1630℃ | ≧1700℃ | ≧1650℃ | ≧1700℃ |
Advantages of Corundum Mullite Bricks Produced by PER
Corundum Mullite Brick is a kind of high-grade refractory material, mainly used in the high-temperature area of ultra-high temperature tunnel kilns, such as furnace walls, furnace roofs, kiln cars, and other parts. Corundum mullite brick has the following advantages:
1. High-temperature resistance, high refractory temperature, 高負荷軟化温度.
2. Resistant to chemical erosion, strong resistance to acidic solution and slag.
3. Oxidation resistance. O2, H2, CO, and other gases are not easy to chemical reaction.
4. Good thermal stability, high-temperature volume stability, not easy to expand and contract.
5. Resistant to thermal shock, rapid cooling, and heating, not easy to peel off.
6. High compressive strength at room temperature, not easy to wear out when handling and unloading.
What is The Use of Corundum-Mullite Bricks?
1. Corundum-mullite bricks are in direct contact with flame. It can be mainly used in the petrochemical industry, large and medium-sized ammonia gasifiers and magnetic material gasifier materials, high-temperature industrial kiln supporting facilities materials, and so on. Not easy to flake, 高温耐性, can be adapted to a variety of environmental conditions of high-temperature kiln use. It can be used in high-temperature kilns under various environmental conditions. It can be used as the working layer of high-temperature kilns for other industrial applications.
2. Corundum-mullite bricks are widely used in zirconia セラミックス, fluorescent materials, electronic ceramics, magnetic materials, ceramic powder high-temperature sintering and petrochemical industry gasifier, ammonia two-stage conversion furnace, carbon black reactors, glass industry high-temperature kiln equipment.
Corundum Brick Production Technology
Corundum mullite bricks are usually manufactured using synthetic mullite. The aggregate and powder are added to the batch in a certain proportion and particle size at an inclined angle, and the sulfite pulp waste liquid is used as the binder, which is added in a certain order and stirred well. Molding with a friction brick machine or liquid pressure brick machine also can use mullite particles as aggregate and – Al2O3 powder as powder, or corundum particles electrofused or sintered as aggregate and synthetic mullite powder as powder. The bricks are dried and fired at 1650 ~1750.
What are The Properties of Corundum Mullite Bricks?
1. Heavy material has good densification, 高い圧縮強度, strong resistance to various corrosive gases, good thermal shock stability, excellent thermal conductivity, and wear-resistant.
2. Lightweight materials with uniform internal structure, more suitable price, 高い圧縮強度, 耐浸食性, earthquake resistance, oxidation resistance, high service temperature, 熱伝導率が低い.
3. Corundum mullite bricks and mullite refractory bricks have the advantages of high load softening temperature, low creep rate at high temperatures, 優れた耐熱衝撃性, 等. 加えて, at high temperatures, mullite can react with water vapor to generate Al2O3 and damage, which is widely used in industrial furnaces and kilns such as blast furnaces hot air furnaces, ガラス溶解窯, dry quenching coke, and heating furnace. Corundum mullite bricks are easily corroded by alkali refractory bricks at high temperatures.
PER耐火物会社について
PER 耐火物会社 新密市にあります, 河南省, 中国の耐火物の故郷. Our company is a technology-based stubborn enterprise integrating R&D, 製造, 販売, および技術サービス. この地域の豊富な資源と優れた品質は、耐火物生産に比類のない優れた条件を提供します。. 当社の主力製品は耐火粘土レンガです, 高アルミナ耐火れんが, 耐火珪石れんが, マグネシウム耐火レンガ, ムライトレンガ, 断熱レンガ, その他の高温耐性製品.
PERは最も重要なことを考慮します, 私たちはすべての製品を真剣に受け止め、すべての顧客を誠実に受け入れることを信じています. すべてのお客様に迅速かつ高品質な結果を提供するため. PER耐火物は、お客様にとって最も信頼できる耐火物メーカーであり、信頼できるパートナーとなります。.
会社PER耐火物はグリーンの生産拠点です, 省エネ, 環境に優しい新耐火物. 当社はISO9001を取得しました:2008 国際品質システム認証および GB/T24001-2004 / ISO14001:2004 環境マネジメントシステム認証, 企業品質検査機関認証. 当社の製品は以下の地域でよく販売されています 20 世界中の国. 冶金用に好ましい耐火物製品です。, 非鉄, 石油化学, ガラス, セラミックス, およびその他の耐火物産業.
