鼎晟 礦渣耐火水泥 425普通硅酸鹽水泥 高鋁耐火水泥
- 作者:鞏義市鼎晟剛玉磨料有限公司 2015-12-24 11:54 277
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【鼎晟】礦渣耐火水泥 425普通硅酸鹽水泥 高鋁耐火水泥
耐火水泥產(chǎn)品介紹:
耐火度不低于1580°C的水泥。按組成不同可分為鋁酸鹽耐火水泥、低鈣鋁酸鹽耐火水泥、鈣鎂鋁酸鹽水泥和白云石耐火水泥等。
歷史資料顯示,隨著人們對鋁酸鈣耐熱性能的發(fā)現(xiàn)和了解,1913年歐洲的鋁酸鈣的產(chǎn)量便有了飛速的提高。當(dāng)20世紀(jì)20年代不定型耐火澆注材料開始邁出自己的發(fā)展步伐時(shí)。到20世紀(jì)八十年代末和九十年代,逐漸出現(xiàn)了新的澆注技術(shù)。最先引進(jìn)使用的是低水泥澆注料的泵送和自流澆注技術(shù)。之后,又出現(xiàn)了濕式噴涂或噴射技術(shù)。在這些技術(shù)的變革中,產(chǎn)生了耐火水泥。耐火水泥也叫鋁酸鹽水泥。鋁酸鹽水泥是以鋁礬土和石灰石為原料,經(jīng)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。鋁酸鹽水泥常為黃或褐色,也有呈灰色的。鋁酸鹽水泥的主要礦物成為鋁酸一鈣(CaO•Al2O3,簡寫CA)及其他的鋁酸鹽,以及少量的硅酸二鈣(2CaO•SiO2)等。
耐火水泥的用途:
耐火水泥可用于膠結(jié)各種耐火集料(如剛玉、煅燒高鋁礬土等),制成耐火砂漿或混凝土,用于水泥回轉(zhuǎn)窯和其他工業(yè)窯爐作內(nèi)襯。
耐火水泥操作方法:
耐火水泥的烘烤
耐火水泥爐襯進(jìn)行烘烤時(shí),必須注意下列事宜:
1)常溫350度階段,最易引起局部爆裂,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(yīng)減緩升溫速度。
2)在通風(fēng)不良、水氣不易排出的條件下,要適當(dāng)延長保溫時(shí)間。
3)當(dāng)用重油烘烤時(shí),要嚴(yán)防重油噴在爐襯表面,以防局部爆裂。
4)當(dāng)用木柴烘烤時(shí),直接接觸火焰處往往造成局部升溫過急,應(yīng)加以防護(hù)。
5)對新澆搗的耐火水泥,至少要經(jīng)3d后才可進(jìn)行烘烤。
6)對耐火水泥爐襯的冷卻也應(yīng)緩慢,避免強(qiáng)制通風(fēng)。
耐火水泥技術(shù)要求:
1、細(xì)度:水泥顆粒越細(xì),比表面積越大,水化反應(yīng)越快越充分,早期和后期強(qiáng)度都較高。國家規(guī)定:比表面積應(yīng)大于300平方米/千克,否則為不合格。
2、凝結(jié)時(shí)間:為保證在施工時(shí)有充足的時(shí)間來完成攪拌、運(yùn)輸、成型等各種工藝,水泥的初凝時(shí)間不宜太短;施工完畢后,希望水泥能盡快硬化,產(chǎn)生強(qiáng)度,所以終凝時(shí)間不宜太長。硅酸鹽水泥的初凝時(shí)間不得早于45分鐘,終凝時(shí)間不得遲于390分鐘。
3、體積安定性:水泥漿體在凝結(jié)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(chǎn)生翹曲和開裂,降低工程質(zhì)量甚至出現(xiàn)事故。
規(guī)格參數(shù):
品名
指標(biāo)
高鋁水泥耐火澆注料
低鈣鋁酸鹽水泥
耐火澆注料
粘土質(zhì)耐火澆注料
高鋁質(zhì)耐火澆注料
鋁-40
鋁-50
鋁-55
鋁-65
鋁-70
體積密度(110℃±5℃×24h)≥
kg/m³
1900
2100
2200
2300
2500
烘干耐壓強(qiáng)度()
Mpa
20
23
20
23
40
烘干抗折強(qiáng)度()
Mpa
4
5
4
5
6
800℃高溫殘余強(qiáng)度
%
40
50
40
50
60
熱震穩(wěn)定性()
次
15
15
15
15
20
燒后線變化,保濕3h,不大于1%的實(shí)驗(yàn)溫度
℃
1200
1250
1300
1350
1400
耐火度≥
℃
1650
1670
1700
1730
1770
AL2O3≥
%
40
50
55
65
75
耐火骨料最大粒度
mm
當(dāng)澆注厚度≤60mm時(shí),≤5mm
當(dāng)澆注厚度60-100時(shí),≤10mm
當(dāng)澆注厚度≥100mm時(shí),≤15mm
耐火水泥的用途:
耐火水泥可用于膠結(jié)各種耐火集料(如剛玉、煅燒高鋁礬土等),制成耐火砂漿或混凝土,用于水泥回轉(zhuǎn)窯和其他工業(yè)窯爐作內(nèi)襯。
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地 址:河南省鞏義市白沙工業(yè)園
英文說明:
Product introduction of Refractory cement :
Not less than 1580 ° C refractoriness of the cement.According to the composition of different can be divided into the aluminate refractory cement, low calcium aluminate refractory cement, calcium magnesium aluminate cement and dolomite refractory cement etc.
Historical data show that along with the people on the properties of calcium aluminate heat-resistant discovery and understanding, in 1913 the European production of calcium aluminate has improved rapidly.When the amorphous refractory pouring materials in the 1920 s began to take their own pace of development.Into the 20th century in the late eighty s and eighty s, a new casting technology gradually.First introduced USES the low cement castable pumping and gravity casting technique.After the wet spraying or injection technology.In these technologies change, refractory cement.Refractory cement is also called the aluminate cement.Aluminate cement is 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.Aluminate cement is often yellow or brown, and gray.Aluminate cement main minerals become a calcium aluminate (CaO, Al2O3, abbreviated CA) and other aluminum acid salt, and a small amount of dicalcium silicate, CaO, SiO2 (2), etc.
The purpose of the refractory cement:
Refractory cement can be used to bond a variety of refractory aggregate (such as corundum, high calcined bauxite, etc.), made from refractory mortar or concrete, used for cement rotary kiln and other industrial kiln liner.
Operation method of Refractory cement:
Refractory cement baking
Refractory cement lining during 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.
Refractory cement technical requirements:
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.
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形狀 : 粉末狀 ;
形態(tài) : 粉狀 ;
芯材 : 其他 ;
撕裂強(qiáng)度 : 8.0 ;
使用溫度 : ≤1770℃ ;
拉伸強(qiáng)度 : 6.0 ;
抗壓強(qiáng)度 : 180 ;
抗彎強(qiáng)度 : 9.0 ;
斷裂伸長率 : 5.0 ;
低溫彎折≤ : 92 ;
等級 : 一級 ;
導(dǎo)熱系數(shù)(常溫) : 0.03 ;
材質(zhì) : CA ;
產(chǎn)品類別 : 硅酸鋁制品 ;
品牌 : 鼎晟 ;
產(chǎn)地 : 鞏義 ;
耐火溫度 : 1580~1770℃(℃) ;
鞏義市鼎晟剛玉磨料有限公司是金剛砂、棕剛玉、白剛玉、碳化硅、黑剛玉、銅礦砂等磨料系列、活性炭等凈水材料、耐火材料等產(chǎn)品專業(yè)生產(chǎn)加工的公司,擁有完整、科學(xué)的質(zhì)量管理體系。鞏義市鼎晟剛玉磨料有限公司的誠信、實(shí)力和產(chǎn)品質(zhì)量獲得業(yè)界的認(rèn)可。歡迎各界朋友蒞臨參觀、指導(dǎo)和業(yè)務(wù)洽談。 Gongyi city ding sheng corundum abrasives co., LTD. Is a corundum, brown corundum, white corundum, silicon carbide, black corundum, copper ore and other abrasive series, such as activated carbon water purification materials, refractory materials and other products professional production and processing company, with complete and scientific quality management system. Gongyi city ding sheng corundum abrasives co., LTD. Of integrity, strength and product quality obtain industry acceptance. Welcome friends from all walks of life come to visit, guidance and business negotiation.
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工藝 : 磨加工;
產(chǎn)品質(zhì)量認(rèn)證 : CCC;
品牌名稱 : 鼎晟
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產(chǎn)品價(jià)格:面議
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