高铝水泥简介
高铝水泥又称为矾土水泥，耐火水泥，铝酸盐水泥，统称为铝酸盐水泥，是以铝矾土和石灰石为原料，经煅烧制得的以铝酸钙为主要成分、氧化铝含量约50%的熟料，再磨制成的水硬性胶凝材料。高铝水泥常为黄或褐色，也有呈灰色的。具有快硬、早强、耐腐蚀、耐高温的水硬性胶凝材料；它既是一种的建筑材料，也是一种胶凝性散状耐火材料，在冶金、建材、石油化工、电力、食品等行业有着广泛的应用。
高铝水泥生产要求
1、细度：水泥颗粒越细，比表面积越大，水化反应越快越充分，早期和后期强度都较高。规定：比表面积应大于300平方米/千克，否则为不合格。
2、凝结时间：为在施工时有充足的时间来完成搅拌、运输、成型等各种工艺，水泥的初凝时间不宜太短；施工完毕后，希望水泥能尽快硬化，产生强度，所以终凝时间不宜太长。硅酸盐水泥的初凝时间不得早于45分钟，终凝时间不得迟于390分钟。
3、体积安定性：水泥浆体在凝结硬化过程中体积变化的均匀性称为水泥的体积安定性。如体积变化不均匀即体积安定性不良，容易产生翘曲和开裂，降低工程质量甚至出现事故。
4、 耐火水泥的烘烤耐火水泥炉衬进行烘烤时，必须注意下列事宜:
1) 常温350度阶段，易引起局部爆裂，要特别注意缓慢烘烤。如在350度保温后仍有大量蒸汽冒出，仍应减缓升温速度。
2) 在通风不良、水气不易排出的条件下，要适当延长保温时间。
3) 当用重油烘烤时，要严防重油喷在炉衬表面，以防局部爆裂。
4) 当用木柴烘烤时，直接接触火焰处往往造成局部升温过急，应加以防护。
5) 对新浇捣的耐火水泥，至少要经3d后才可进行烘烤。
6) 对耐火水泥炉衬的冷却也应缓慢，避免强制通风。
理化指标
特性指标 |
| 单位 | 量值 | 标准 GB201-2000中CA50规定 |
比表面积 | SSB | ㎡/kg | 369 | ≥300 |
化学成分 | SiO2 | % | 7.41 | ≤8.0 |
AL2O3 | % | 51.10 | ≥50 |
Fe2O3 | % | 2.19 | ≤2.5 |
R2O | % | 0.32 | ≤0.4 |
凝结时间 | 初凝IS | 分钟 | 166 | ≥30 |
终凝FS | 分钟 | 223 | ≤360 |
抗折强度 | 一天 | Mpa | 7.2 | ≥5.5 |
三天 | Mpa | 7.7 | ≥6.5 |
抗压强度 | 一天 | Mpa | 51.9 | ≥40 |
三天 | Mpa | 60.6 | ≥50 |
高铝水泥用途
高铝水泥又称为铝酸盐水泥 耐火水泥，相当于625#水泥，因其具有优良的快凝，高强，耐高温之特点，一天强度可达80%，耐火度可达1450度，耐火混凝土强度可达55MPa,是工业窑炉工程中的高温结合剂材料之一。
联系方式
巩义市鸿越耐材有限公司
联 系 人：王鲜红
手 机：15738820391
Q Q ：3515543650
邮 箱：3515543650@qq.com
地 址：河南郑州巩义市
网 址：https://shop1467133631327.1688.com
英文翻译
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
厂区图片
联系方式
巩义市鸿越耐材有限公司
联 系 人：王鲜红
手 机：15738820391
Q Q ：3515543650
邮 箱：3515543650@qq.com
地 址：河南郑州巩义市
网 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
