冶金建材石油化工行业专用高铝水泥,质量保证
冶金建材石油化工行业专用高铝水泥,质量保证
冶金建材石油化工行业专用高铝水泥,质量保证
冶金建材石油化工行业专用高铝水泥,质量保证
销售热线:15981910583

冶金建材石油化工行业专用高铝水泥,质量保证

address  河南
品 牌: 青云 
单 价: 面议 
起 订: 1 公斤 
供货总量: 3755 公斤
发货期限: 自买家付款之日起 天内发货
有效期至: 长期有效
最后更新: 2015-12-03
 
 
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                                                                                   【青云】冶金 建材 石油化工行业专用高铝水泥                                        
产品实拍
高铝水泥 (2)高铝水泥高铝水泥 (1)高铝水泥 (3)高铝水泥 (5)高铝水泥 (6)高铝水泥 (4)
产品介绍

【高铝水泥产品介绍】:

    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;它既是一种优质的建筑材料,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。

【产品技术要求】

   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。国家规定:比表面积应大于300平方米/千克,否则为不合格。

   2、凝结时间:为保证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,最易引起局部爆裂,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。


【The high aluminum cement products introduction 】 :

Also known as alumina cement, high alumina cement refractory cement, aluminate cement, collectively known as aluminate cement, bauxite and limestone as raw material, after the calcination of calcium aluminate as mAIn ingredients, alumina content is about 50% of the clinker, again into the water rigid gelled material. High alumina cement is often yellow or brown, and gray. With a rapid hardening, early strength, corrosion resistance, resistance to high temperature of the water rigid gelled material; It is a kind of high-quality building materials, is also a kind of loose refractory for gelling property, in metallurgy, building materials, oil chemical, electric power, food and other industries has been widely used.

【product technical requirement】:

1, fineness, cement particle is fine, the bigger the specific surface area, the faster the hydration reaction more fully, the early and late strength is higher. The provisions of the state: the specific surface area should be more than 300 square meters/kg, otherwise is unqualified.

2, setting time, in order to guarantee the construction have enough time to complete mixing, transportation, forming a variety of craft, such as the initial setting time of cement shoulds not be too short; After the completion of the engineering project, the hope cement hardening, as soon as possible to produce strength, so the final setting time shoulds not be too long. The initial setting time of Portland cement shall not be earlier than 45 minutes, final set time not later than 390 minutes.

3, volume stability, water slurry uniformity of volume change in the process of condensation sclerosis called the volume stability of cement. Such as volume change uneven or volume stability, prone to warping and cracking, reduce the engineering quality and even an accident.

4, refractory cement refractory cement lining for baking, must pay attention to the following matters:

Stage 1) under normal temperature 350 degrees, the most easily cause local burst, it is important to pay special attention to the slow roasted. If there are still a lot of steam after 350 degrees heat preservation, should still slow heating speed.

2) under the condition of poor ventilation, water discharge, should be appropriately extended holding time.

3) when using heavy oil baking, carefully crude oil is sprayed on the surface of lining, in case of partial burst.

4) when use firewood baked, direct contact with the flame place often causes local warming too rush, should be protected.

5) cast of new refractory cement, at least by 3 d can be carried out only after baking.

6) for refractory cement lining cooling should also slow, avoid forced ventilation.

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