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高鋁水泥簡介
高鋁水泥又稱為礬土水泥，耐火水泥，鋁酸鹽水泥，統(tǒng)稱為鋁酸鹽水泥，是以鋁礬土和石灰石為原料，經煅燒制得的以鋁酸鈣為主要成分、氧化鋁含量約50%的熟料，再磨制成的水硬性膠凝材料。高鋁水泥常為黃或褐色，也有呈灰色的。具有快硬、早強、耐腐蝕、耐高溫的水硬性膠凝材料；它既是一種的建筑材料，也是一種膠凝性散狀耐火材料，在冶金、建材、石油化工、電力、食品等行業(yè)有著廣泛的應用。
高鋁水泥生產要求
1、細度：水泥顆粒越細，比表面積越大，水化反應越快越充分，早期和后期強度都較高。規(guī)定：比表面積應大于300平方米/千克，否則為不合格。
2、凝結時間：為在施工時有充足的時間來完成攪拌、運輸、成型等各種工藝，水泥的初凝時間不宜太短；施工完畢后，希望水泥能盡快硬化，產生強度，所以終凝時間不宜太長。硅酸鹽水泥的初凝時間不得早于45分鐘，終凝時間不得遲于390分鐘。
3、體積安定性：水泥漿體在凝結硬化過程中體積變化的均勻性稱為水泥的體積安定性。如體積變化不均勻即體積安定性不良，容易產生翹曲和開裂，降低工程質量甚至出現(xiàn)事故。
4、 耐火水泥的烘烤耐火水泥爐襯進行烘烤時，必須注意下列事宜:
1) 常溫350度階段，易引起局部爆裂，要特別注意緩慢烘烤。如在350度保溫后仍有大量蒸汽冒出，仍應減緩升溫速度。
2) 在通風不良、水氣不易排出的條件下，要適當延長保溫時間。
3) 當用重油烘烤時，要嚴防重油噴在爐襯表面，以防局部爆裂。
4) 當用木柴烘烤時，直接接觸火焰處往往造成局部升溫過急，應加以防護。
5) 對新澆搗的耐火水泥，至少要經3d后才可進行烘烤。
6) 對耐火水泥爐襯的冷卻也應緩慢，避免強制通風。
理化指標
特性指標 | 單位 | 量值 | 標準 GB201-2000中CA50規(guī)定 | |
比表面積 | SSB | ㎡/kg | 369 | ≥300 |
化學成分 | SiO2 | % | 7.41 | ≤8.0 |
AL2O3 | % | 51.10 | ≥50 | |
Fe2O3 | % | 2.19 | ≤2.5 | |
R2O | % | 0.32 | ≤0.4 | |
凝結時間 | 初凝IS | 分鐘 | 166 | ≥30 |
終凝FS | 分鐘 | 223 | ≤360 | |
抗折強度 | 一天 | Mpa | 7.2 | ≥5.5 |
三天 | Mpa | 7.7 | ≥6.5 | |
抗壓強度 | 一天 | Mpa | 51.9 | ≥40 |
三天 | Mpa | 60.6 | ≥50 |
高鋁水泥用途
高鋁水泥又稱為鋁酸鹽水泥 耐火水泥，相當于625#水泥，因其具有優(yōu)良的快凝，高強，耐高溫之特點，一天強度可達80%，耐火度可達1450度，耐火混凝土強度可達55MPa,是工業(yè)窯爐工程中的高溫結合劑材料之一。
聯(lián)系方式
鞏義市鴻越耐材有限公司
聯(lián) 系 人：王鮮紅
手 機：15738820391
Q Q ：3515543650
郵 箱：3515543650@qq.com
地 址：河南鄭州鞏義市
網 址：https://shop1467133631327.1688.com
英文翻譯
High alumina cement
High alumina cement, also known as alumina cement, refractory cement, aluminate cement, collectively referred to as aluminate cement, is with bauxite and limestone as raw material, the calcination of calcium aluminate as main ingredients, alumina content is about 50% of the clinker, grinding is made of water hydraulic cementitious materials. High alumina cement is often yellow or brown, there is a gray. With rapid hardening, early strength, corrosion resistance, resistance to high temperature of the water hydraulic cementitious materials; it is a kind of high quality building materials and a cementitious powder shaped refractory material, in the metallurgy, building materials, petrochemical, electricity, food and other industries has a widely used.
Production requirement of high alumina cement
1, fineness: the finer the cement particles, the larger the surface area, the faster the more full hydration, early and late strength are higher. State regulations: the specific surface area should be more than 300 square meters / kg, otherwise not qualified.
2, setting time: in order to guarantee in the construction have plenty of time to finish the mixing, transportation, molding, and other various process, cement and its initial setting time shoulds not be too short; after the completion of construction, hope cement as soon as possible hardening and strength, therefore the end coagulation time shoulds not be too long. Portland cement at the beginning of the first set of time shall not be earlier than 45 minutes, the final setting time shall not be later than 390 minutes.
3, volume stability: cement paste in the coagulation process of volume change uniformity called the volume stability of cement. If the volume change is not uniform, that is, the volume stability is poor, prone to warping and cracking, reduce the quality of the project and even the accident.
4, refractory cement baking refractory cement lining baking, must pay attention to the following matters:
1) at room temperature 350 degrees, the most likely to cause local burst, to pay special attention to the slow baking. If there are still a lot of steam after the 350 degree heat, still should slow down the speed of heating.
2) in the condition of bad ventilation, water vapor is not easy to discharge, to properly extend the heat preservation time.
3) when using heavy oil for baking, to prevent oil sprayed on the surface of the furnace lining, to prevent local burst.
4) when using wood baking, direct contact with the flame is often caused by local heating too fast, should be protected.
5) to the new cast of refractory cement, at least through the 3D can be carried out after baking.
6) for refractory cement lining should also slow cooling, avoid forced ventilation.
High alumina cement application
High alumina cement and sulphoaluminate cement refractory cement, equivalent to the cement 625#. Because of its excellent fast setting, high strength, resistance to high temperature characteristics of that day intensity can reach 80% and refractoriness up to 1450 degrees, refractory concrete strength up to 55MPa, is one of the industrial furnace engineering excellent high temperature binder material.
Contact information
Gongyi Hongyue Refractories Co. Ltd.
Contact: Wang Xianhong
Cell phone: 15738820391
Q:3515543650 Q
Mailbox: 3515543650@qq.com
Address: Zhengzhou, Gongyi, Henan City
URL: https://shop1467133631327.1688.com
廠區(qū)圖片
聯(lián)系方式
鞏義市鴻越耐材有限公司
聯(lián) 系 人：王鮮紅
手 機：15738820391
Q Q ：3515543650
郵 箱：3515543650@qq.com
地 址：河南鄭州鞏義市
網 址：https://shop1467133631327.1688.com
Gongyi city hong the refractory material co., LTD
Touch: king red
Hand machine: 15738820391
Q Q: 3515543650
Mail box: 3515543650 @qq.com
Address: zhengzhou, henan gongyi city
Web site: https://shop1467133631327.1688.com
