【**央】耐火材料行業(yè)專用鋁礬土基尖晶石                    氧化鋁基尖晶石   產(chǎn)品寫真
廠家介紹
 


 


 


 


產(chǎn)品介紹 
【鋁鎂尖晶石的介紹】：
 
     上海**央鋁鎂尖晶石屬于一種鋁鎂氧化物，其主要成分為氧化鋁和氧化鎂。鋁鎂尖晶石有天然形成和人工合成兩種，其化學(xué)式為MgAL2O4或者M(jìn)go•AL2O3。尖晶石理論含量為：MgO=28.3%M，AL2O3=71.7%。天然鎂砂尖晶石較少發(fā)現(xiàn)，工業(yè)上應(yīng)用的鋁鎂尖晶石全部都是人工合成的。合成鋁鎂尖晶石的兩個(gè)主要方法是燒結(jié)法和電熔法。多數(shù)尖晶石材料是由高純合成氧化鋁和化學(xué)級(jí)氧化鎂制成，即在豎窯燒結(jié)和在電弧爐內(nèi)電熔。
 
【鋁鎂尖晶石的分類】:
 
     上海**央鋁鎂尖晶石采用燒結(jié)法和電熔法兩種生產(chǎn)工藝。原料主要是菱鎂礦和工業(yè)氧化鋁粉或鋁礬土。按氧化鎂和氧化鋁的指標(biāo)不同，分富鎂尖晶石和富鋁尖晶石并應(yīng)用不同領(lǐng)域。
 
   一、按生產(chǎn)工藝或方法分：燒結(jié)鋁鎂尖晶石（燒結(jié)尖晶石）和電熔鋁鎂尖晶石（電熔尖晶石）。
 
   二、按生產(chǎn)原料可以劃分：鋁礬土基鋁鎂尖晶石與氧化鋁基鋁鎂尖晶石（燒結(jié)或電熔）。
 
    1、鋁礬土基燒結(jié)鋁鎂尖晶石
 
    鋁礬土基燒結(jié)鋁鎂尖晶石的生產(chǎn)工藝和方法：
    鋁礬土基燒結(jié)鋁鎂尖晶石才有AL2O3含量76%以上的**鋁礬土和MgO含量95%以上的**輕燒鎂粉，經(jīng)過多級(jí)均化工藝，在**高溫隧道窯中經(jīng)1800℃以上高溫?zé)Y(jié)而成。
 
    鋁礬土基燒結(jié)鋁鎂尖晶石的特點(diǎn)與應(yīng)用：
    鋁礬土基燒結(jié)鋁鎂尖晶石具有良好的抗侵蝕、抗腐蝕、抗剝落能力強(qiáng)，抗渣性能好，抗磨蝕能力強(qiáng)，熱穩(wěn)定性好。耐高溫等性能特點(diǎn)。是生產(chǎn)水泥回轉(zhuǎn)窯高溫帶用鋁鎂尖晶石磚、鋼包襯磚、鋼包澆注料等耐火材料的理想原料。鋁鎂尖晶石廣泛用于耐火材料、鋼鐵冶煉、水泥回轉(zhuǎn)窯及玻璃工業(yè)窯爐上。
 
     鋁礬土基燒結(jié)鋁鎂尖晶石的性能與作用：
鋁鎂尖晶石具有良好的抗侵蝕能力、抗磨蝕能力、熱震穩(wěn)定性好。其主要的用途：一是代替鎂鉻砂制造鋁鎂尖晶石磚用于水泥回轉(zhuǎn)窯，不但避免了鉻公害，而且具有良好的抗剝落性；二是鋁鎂尖晶石用于制作鋼包澆注料，大大提高鋼板襯的抗侵蝕能力。使其廣泛應(yīng)用于煉鋼用耐火材料。**預(yù)合成尖晶石的制取為不定形及定形高純耐火材料的生產(chǎn)提供了新的原料。
 
     燒結(jié)尖晶石的優(yōu)點(diǎn)：
     該工藝是一個(gè)連續(xù)的陶瓷化過程，控制窯中給料速度和均衡的溫度分布，產(chǎn)生非常均勻的晶體尺寸為30-80µm及低氣孔率（3%）的產(chǎn)品。
   
     物理化學(xué)理化指標(biāo)：
 
項(xiàng)目
Al2O3%
MgO%
SiO2%
體密g/cm3
氣孔率%
尖晶石 %
硅酸鹽%
指標(biāo)
56-62
28-32
<4.0
<3.0
<9.0
85-90
10
 
2、【氧化鋁基電熔鋁鎂尖晶石】：
 
   氧化鋁基電熔鋁鎂尖晶石的生產(chǎn)工藝與方法：
 
    氧化鋁基電熔鋁鎂尖晶石是以純度≥98.5%的輕燒氧化鎂并配入適量的高純菱鎂礦（MgO>45.55%)等做配合料。在電弧爐內(nèi)經(jīng)高溫冶煉而成，可加工成不同規(guī)格的顆粒骨料和尖晶石細(xì)粉。
 
   氧化鋁基電熔鋁鎂尖晶石的性能與應(yīng)用:
 
    氧化鋁基電熔鋁鎂尖晶石具有耐高溫、體密大、吸水率低、熱膨脹系數(shù)小、熱穩(wěn)定性好、抗侵蝕能力強(qiáng)的特點(diǎn)。是制造鑄滑板、水口磚、鋼包親磚和平爐爐磚的理想材料，鋁鎂尖晶石制品的高溫力學(xué)性能良好，也是大型水泥窯、中性水泥窯過渡帶親磚、耐火澆注料及高中窯具用的基本原料。廣泛用于鋼鐵冶煉、水泥回轉(zhuǎn)窯級(jí)玻璃工業(yè)窯爐上。
 
    氧化鋁基電熔鋁鎂尖晶石的理化指標(biāo):
 
             規(guī)格性能
           MA-70
            MA-75
砂＞0.1mm
粉≤0.1mm
砂＞0.1mm
粉≤0.1mm
  化學(xué)成份
Al2O3% ≥
67-75
67-75
74-78
74-78
SiO2% ≤
0.4
0.4
0.6
0.6
Fe2O3% ≤
0.5
0.5
0.25
0.3
MgO%≤
23-31
23-31
21-25
21-25
ＣaＯ%≤
0.65
0.65
0.4
0.4
  物理性能
磁性物% ≤
0.05
0.1
0.05
0.1
顯氣孔率%≤
5.0
3.0
體積密度g/cm3≥
3.30
3.30
  電熔尖晶石供應(yīng)規(guī)格：（mm）
尖晶石顆粒：
  0-1，1-3，3-5，5-8
細(xì)粉：0-200目或0-320目
 
   電熔尖晶石的優(yōu)點(diǎn)：
 
    該工藝具有代表性的間歇操作，大澆注料塊需要延長冷卻時(shí)間，澆注塊的冷卻導(dǎo)致顯微結(jié)構(gòu)的不均勻，由于冷卻較快，外部的尖晶石體比里面的小，低熔點(diǎn)雜質(zhì)集中在中心處，因?yàn)椋枰獙?duì)電熔尖晶石原料進(jìn)行分選均化。
 
 
英文版產(chǎn)品介紹 [introduction] magnesium aluminum spinel:
 
Magnesium aluminum spinel belongs to an aluminum magnesium oxide, the main ingredient for alumina and Magnesium Oxide. Magnesium aluminum spinel natural and artificial synthesis of two, its chemical formula is MgAL2O4 or Mgo - AL2O3.Spinel theory content is: MgO=28.3%M, AL2O3=71.7%. Natural magnesia spinelrarely found, magnesium aluminum spinel industrial application are synthetic. Two main methods for the synthesis of magnesia alumina spinel is sintering and electric melting method. The majority of spinel material is made of high purity alumina and chemical synthesis of class Magnesium Oxide, namely in the kiln sintering and in an electric arc furnace electric melting.
 
Magnesium aluminum spinel [classification]:
 
Magnesium aluminum spinel by sintering and electric melting method of two kinds of production process. Magnesite is the main raw material and alumina and bauxite.According to the Magnesium Oxide and alumina different indicators, divided intomagnesium rich spinel and alumina rich spinel and applications in different fields.
A, according to production processes or methods: sintering alumina magnesia spinel (sintered spinel) and fused magnesia alumina spinel (fused spinel).
Two, according to the production of raw materials can be divided into: BauxiteBased spinel and alumina aluminum magnesium aluminum spinel (sintering or fused).
 
1, bauxite based sintered magnesia alumina spinel
 
The production process and method of bauxite based sintered magnesium aluminum spinel:
Bauxite based sintered magnesia alumina spinel is AL2O3 content more than 76%high-quality bauxite and MgO content of more than 95% of the quality of light burned magnesia powder, through multi-level homogenization process, sintered byhigh temperature above 1800 DEG in ultra high temperature tunnel kiln and.
 
The characteristics and application of bauxite based sintered magnesium aluminumspinel:
 
Bauxite based sintered magnesia alumina spinel with anti erosion, anti - corrosion,anti stripping ability good strength, good slag resistance performance, anti erosionability, good thermal stability. High temperature resistant performance characteristics. Is the production of cement rotary kiln with the ideal raw material formagnesium aluminum spinel bricks, the ladle lining brick, refractory castables for ladle etc.. Aluminum magnesium spinel refractory material, widely used in steel smelting, cement rotary kiln and kiln for glass industry.
 
The performance and function of bauxite based sintered magnesium aluminumspinel:
 
Magnesium aluminum spinel has good anti erosion ability, abrasion resistance,good thermal shock stability. The main purposes: one is to replace the magnesia chrome sand manufacturing aluminum magnesia spinel brick for cement rotary kiln,not only to avoid the chrome pollution, but also has good anti flaking; the two is for the production of magnesium aluminate spinel castables for ladle, greatly improve the anti erosion ability of the steel lining. Make it widely used in steelmakingrefractories. Provides a new raw material for the production of amorphous andamorphous high purity refractory material to produce high quality pre synthesis of spinel.
 
The advantages of the sintered spinel:
 
The process is a continuous process of ceramic kiln, to control the feeding speedand the equilibrium temperature distribution, produce crystal very uniform size is 30-80 m and low porosity (3%) products.
 
2, [alumina based fused magnesia alumina spinel]:
 
Production process and method of alumina base fused magnesium aluminumspinel:
Alumina based fused magnesia alumina spinel is the purity of more than 98.5% of the light burning Magnesium Oxide and high-purity magnesite proper (MgO>45.55%) do batch. In the arc furnace processed, can be processed into different specifications of the aggregate and spinel powder.
 
Performance and application of alumina base fused magnesium aluminum spinel:
 
Alumina based fused magnesia alumina spinel has the advantages of high temperature resistance, body density, low water absorption rate, coefficient of small, good thermal stability, anti erosion ability of thermal expansion. Is themanufacture of casting nozzle brick, skateboard, ladle furnace brick brick peacedear ideal material, high temperature mechanical properties of magnesium aluminum spinel produc
耐火溫度 2000℃以上（℃） 產(chǎn)地 上海 ** **央 產(chǎn)品類別 尖晶石 材質(zhì) 鋁礬土 導(dǎo)熱系數(shù)（常溫） 0.03 等級(jí) 一級(jí) 低溫彎折≤ 10 斷裂伸長率 1 抗彎強(qiáng)度 99 抗壓強(qiáng)度 99 拉伸強(qiáng)度 99 使用溫度 200 撕裂強(qiáng)度 1 芯材 hdf 形態(tài) 層狀 形狀 表面凹凸型

上海**央耐火材料有限公司主要生產(chǎn)：金剛砂、棕剛玉、白剛玉、黑剛玉、碳化硅等各種剛玉金剛砂，以及各種莫來石和鋁礬土耐火骨料，耐火涂料、耐火水泥等不定型耐火材料，另有各種蓄熱球、高鋁球、耐火磚等系列產(chǎn)品；主要用于石油、化工、冶金、電力、建材、鍋爐、工業(yè)鑄爐、管道、儲(chǔ)罐等，具有保溫耐火、**、消音、節(jié)能等用途。 我公司生產(chǎn)的**材料以及耐火材料質(zhì)量符合地區(qū)標(biāo)準(zhǔn)，可根據(jù)用戶要求及設(shè)計(jì)部門提供的特殊要求生產(chǎn)。成為行業(yè)綜合競爭力較強(qiáng)的科技先導(dǎo)型企業(yè)之一，為行業(yè)發(fā)展起到了**和**作用。
加工方式 : 其他;來樣加工;來圖加工;
工藝 : 涂裝;其他建材加工工藝;金屬鑄造;模具制造;涂層;磨加工;其他機(jī)械五金工藝;表面處理;涂料加工;研磨拋光;
產(chǎn)品質(zhì)量認(rèn)證 : CCC;
**名稱 : **央
質(zhì)量控制 : 內(nèi)部