【保中】耐火材料 鋼鐵冶煉專用鋁鎂尖晶石   【產品寫真】
【產品包裝】【產品介紹】 
【鋁鎂尖晶石的介紹】：
 
     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，其化學式為MgAL2O4或者Mgo•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主要方法是燒結法和電熔法。多數(shù)尖晶石材料是由高純合成氧化鋁和化學級氧化鎂制成，即在豎窯燒結和在電弧爐內電熔。
 
【鋁鎂尖晶石的分類】:
 
      鋁鎂尖晶石采用燒結法和電熔法兩種生產工藝。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不同，分富鎂尖晶石和富鋁尖晶石并應用不同領域。
 
    一、按生產工藝或方法分：燒結鋁鎂尖晶石（燒結尖晶石）和電熔鋁鎂尖晶石（電熔尖晶石）。
 
    二、按生產原料可以劃分：鋁礬土基鋁鎂尖晶石與氧化鋁基鋁鎂尖晶石（燒結或電熔）。
 
     1、鋁礬土基燒結鋁鎂尖晶石
 
     鋁礬土基燒結鋁鎂尖晶石的生產工藝和方法：
 
     鋁礬土基燒結鋁鎂尖晶石才有AL2O3含量76%以上的**鋁礬土和MgO含量95%以上的**輕燒鎂粉，經(jīng)過多級均化工藝，在**高溫隧道窯中經(jīng)1800℃以上高溫燒結而成。
 
    鋁礬土基燒結鋁鎂尖晶石的特點與應用：
 
     鋁礬土基燒結鋁鎂尖晶石具有良好的抗侵蝕、抗腐蝕、抗剝落能力強，抗渣性能好，抗磨蝕能力強，熱穩(wěn)定性好。耐高溫等性能特點。是生產水泥回轉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、水泥回轉窯及玻璃工業(yè)窯爐上。
 
     鋁礬土基燒結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。使其廣泛應用于煉鋼用耐火材料。**預合成尖晶石的制取為不定形及定形高純耐火材料的生產提供了新的原料。
 
     燒結尖晶石的優(yōu)點：
 
     該工藝是一個連續(xù)的陶瓷化過程，控制窯中給料速度和均衡的溫度分布，產生非常均勻的晶體尺寸為30-80µm及低氣孔率（3%）的產品。
   
    物理化學理化指標：
 
項目
Al2O3%
MgO%
SiO2%
體密g/cm3
氣孔率%
尖晶石 %
硅酸鹽%
指標
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粉。
 
   氧化鋁基電熔鋁鎂尖晶石的性能與應用:
 
    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、抗侵蝕能力強的特點。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、水泥回轉窯級玻璃工業(yè)窯爐上。
 
    氧化鋁基電熔鋁鎂尖晶石的理化指標:
 
規(guī)格性能
MA-70
MA-75
砂＞0.1mm
粉≤0.1mm
砂＞0.1mm
粉≤0.1mm
化學成份
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
電熔尖晶石供應規(guī)格：（mm）
尖晶石顆粒：0-1，1-3,3-5,5-8
細粉：0-200目或0-320目
 
   電熔尖晶石的優(yōu)點：
 
    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間，澆注塊的冷卻導致顯微結構的不均勻，由于冷卻較快，外部的尖晶石體比里面的小，低熔點雜質集中在中心處，因為，需要對電熔尖晶石原料進行分選均化。
 
【英文介紹】 
【 magnesium aluminium spinel introduction 】 :
 
Magnesium aluminum spinel belongs to a kind of aluminum and magnesium oxide, the main components in aluminum oxide and magnesium oxide. Magnesium aluminum spinel has naturally occurring and synthetic two kinds, the former is MgAL2O4 or Mgo style, AL2O3. Spinel theory content is: MgO style = 28.3% M, AL2O3 = 71.7%. Natural magnesia spinel rarely found that magnesium aluminum spinel in industrial application are all synthetic. Synthesis of magnesium aluminium spinel and fused two main methods are sintering method. Most spinel material is made from high purity synthetic chemical and alumina grade magnesium oxide, which in shaft kiln sintering and fused in arc furnace.
 
【The classification of magnesium aluminum spinel 】 :
 
Alumina magnesia and fused spinel with sintering, the method of two kinds of production process. Raw materials mainly magnesite and industrial alumina powder or bauxite. According to the index of magnesium oxide and alumina, magnesium rich spinel and rich aluminum spinel and applied to different fields.
 
A, according to the production process or method points: sintering alumina magnesia spinel (sintered spinel) and fused magnesium aluminium spinel, fused spinel).
Second, according to the production of raw materials can be divided into: bauxite alumina magnesia spinel with alumina aluminum magnesium spinel (sintered or fused).
 
1, bauxite sintering alumina magnesia spinel
 
Production technology of bauxite sintering aluminum magnesium spinel and methods:
Bauxite sintering aluminum magnesium spinel is AL2O3 content more than 76% of the high quality bauxite and MgO style content more than 95% of the high quality light burning magnesium powder, through multi-stage homogenization process, hitches in ultra high temperature tunnel kiln is above 1800 ℃ high temperature sintering.
 
The characteristics of the bauxite sintering aluminum magnesium spinel and application:
Bauxite sintering aluminum magnesium spinel has good erosion resistance, corrosion resistance, spalling resistance capability is strong, good slag resistance, abrasion resistance, good thermal stability. High temperature resistance and other characteristics. Is the production of cement rotary kiln thermal belt with alumina magnesia spinel bricks, ladle lining brick, ladle castable refractory materials such as the ideal raw material. Magnesium aluminum spinel is widely used in refractory material, steel smelting, cement rotary kiln and glass kiln.
 
The performance of the bauxite sintering aluminum magnesium spinel and function:
Magnesium aluminium spinel has good erosion resistance, abrasion resistance, good thermal shock resistance. Its main purposes: one is substituting magnesite chrome sand manufacture alumina magnesia spinel brick used in cement rotary kiln, not only avoid the chromium pollution, but also has good resistance to spalling; Second, magnesium aluminum spinel used in ladle castable, greatly improve the erosion resistance of steel lining. Make it widely used in steelmaking with refractory material. High quality of preparing for amorphous synthetic spinel and setting high purity of refractory production provides a new raw material.
 
The advantages of the sintered spinel:
This process is a continuous process of pottery and porcelain, control the temperature of the furnace feeding speed and the equilibrium distribution, have very uniform crystal size of 30-80 (including m and low porosity (3%) of the product.
 
2, the alumina base fused alumina magnesia spinel 】 :
 
Oxide production technology of fused alumina magnesia spinel and methods:
Alumina base fused alumina magnesia spinel is a purity of 98.5% or more light burned magnesia and distribution into the right amount of high purity magnesite (MgO style > 45.55%) such as mixtures. In the Canon of high temperature smelting electric arc furnace, and can be processed into different specifications and spinel powder particles of aggregate.
 
Alumina base properties and the application of the fused alumina magnesia spinel:
Alumina base fused alumina magnesia spinel is high temperature resistant, dense large, bibulous rate is low, small thermal expansion coefficient, good thermal stability, strong ability to resist erosion characteristics. Is made of casting skateboard, nozzle bricks, ladle brick and brick is the ideal material of open hearth furnace, magnesium aluminum spinel products of high temperature mechani
體積密度 : 3-3.3g/cm3 ;
電熔尖晶石鋁 : 70-75 ;
燒結尖晶石鋁/鎂 : 56-62%/28-32 ;
規(guī)格 : 0-1 1-3 3-5 5-8（mm） ;
使用溫度 : 1800 ;
斷裂伸長率 : 0.3 ;
低溫彎折≤ : 10 ;
等級 : 一級 ;
導熱系數(shù)（常溫） : 0.035 ;
材質 : EPS ;
產品類別 : 窯爐工業(yè)窯爐用保溫材料 ;
** : 保中 ;
產地 : 河南鞏義 ;
耐火溫度 : 1770～2000℃（℃） ;

登封市保中剛玉制品有限公司是剛玉制品、棕剛玉、碳化硅、白剛玉、黑剛玉、鋁礬土、硫酸鋇、莫來石、除銹砂、拋光砂、核桃殼、玉米芯、高鋁球等產品**生產加工的公司，擁有完整、科學的質量管理體系。登封市保中剛玉制品有限公司的誠信、實力和產品質量獲得業(yè)界的認可。歡迎各界朋友蒞臨參觀、指導和業(yè)務洽談。 本廠擁有5000KVA冶煉爐，集棕剛玉原始塊冶煉、加工、檢驗、銷售于一體的質量誠信**民營企業(yè)。主要生產棕剛玉白剛玉、黑剛玉、碳化硅、金剛砂 地坪金剛砂 氧化鋁由于爐子大、爐溫高、冶煉技術精，產品質量達到國內*水品。同時我廠有**細粉加工線一條，能加工325-0的各類細粉。有鍛砂生產線一條，所加工的0-1、1-3、3-5、5-8，各種鍛砂設備精良，產品質量**，能滿足各種客戶的要求。年生產量在15000噸以上，歡迎新老客戶蒞臨我廠指導除供應國內耐火材料廠和磨具廠用外，**海外出口，產品主要用在耐火材料，砂輪，噴砂，研磨，樹脂磨具，水力切割等領域。公司質保體系完善，嚴格執(zhí)行棕剛玉地區(qū)標準，質量性能及各項指標達到或**過國內外同類產品的**水平，產品質量定、鋁含量高，雜質少，硬度高，**性好。
加工方式 : 來料加工;來樣加工;來料代工加工;
工藝 : 研磨;拋光;白砂;灰砂;家居拋光;模具制造;模具加工;
產品質量認證 : CQC;
**名稱 : 保中
質量控制 : 內部