烧结莫来石 铝硅酸盐 hdf 表面凹凸型

 

 

      元丰莫来石是一种优质的耐火原料，自然莫来石十分少，通罕用烧结法或电熔法等人工分解。莫来石化学式： A1xSi2-xO5.5-0.5x；密度： 3.16g/cm3；莫氏硬度：6-7；耐火度：1800°C时仍很稳固；1810°C合成为刚玉和液相。莫来石是一种低档耐火资料的原资料，它具备收缩平均、热震稳固性较好、荷重硬化点高、低温蠕变值小、硬度大、抗化学侵蚀性好等特点，目前次要有高纯电熔莫来石、一般电熔莫来石、全自然铝矾土精矿烧结莫来石和轻烧莫来石。

 

      莫来石分类：

      1、按分解的办法有烧结莫来石和电熔莫来石；

      2、按原料的化学成分有低铝莫来石、中铝莫来石、高铝莫来石以及锆莫来石等；

      3、若按所含原料品种则有煅烧高岭土（低铝）莫来石、煅烧蓝晶石（中铝）莫来石、全天燃料莫来石（高铝）、高纯莫来石等。

 

     电熔莫来石的结晶比烧结莫来石大，抗热震性比烧结制品好，他们的低温功能次要取决于氧化铝的含量和莫来石相与玻璃散布的平均性；电熔莫来石是一种人工分解的电熔耐火制品，结晶体为针状，它具备热震稳固性好，抗折强度大，荷重硬化温度高，硬度大，低温蠕变小等特点。电熔制莫来石时，应使炉内的氛围放弃复原形态。电熔莫来石色泽白、残碳较低、气孔率低、杂质含量低、抗折强度大，荷重硬化温度高，硬度大，低温蠕变小、针状晶体发育良好，莫来石以其优秀的抗热震功能及耐磨功能，被宽泛使用于玻璃窑体炉衬砖、莫来石砖，大型冶炼高炉热风炉砖、高炉低蠕变硅线石砖，陶瓷窑具、匣钵、棚板、石油化工等行业。

 

     烧结莫来石采纳优质自然铝矾土为原料，经精选工序和多级均化，经1750℃以上低温回转窑烧结而成。电熔莫来石采纳高纯度石英砂、工业氧化铝，在超大电弧炉上熔炼而成。烧结莫来石具备含量高、体积密度大，热触动稳固性好、低温蠕变值小和抗化学侵蚀性好等功能特点，品质稳固，烧结莫来石是消费各种定型与不定性耐火资料、初级卫生洁具坯体、精细铸造等产品的理想原料。

 

      1、低温资料；莫来石具备热震性、低温稳固性及低收缩率，可在耐热资料中使用宽泛。高纯度的耐火砖能够在熄灭室、烧结炉、热风炉中作为内衬的资料；莫来石陶瓷也能够用在坩埚、防护管、热电偶管等中央。由于氧分散有较高的浸透系数，造成陶瓷资料的抗氧化才能较弱，限度资料的使用。经过热喷涂、刷镀、溶胶一凝胶、离子外表注入、等离子喷涂、物理气相堆积和物理化学气相堆积等办法制备莫来石涂层，能够阻止环境介质间接与资料接触，进步非氧化物资料低温抗氧化才能，延伸资料的应用寿命。

      2、莫来石光学资料；莫来石属于斜方晶系，双折射小，肯定条件下能够取得通明陶瓷。莫来石还有良好的透红内线才能，能够在低温、侵蚀等顽劣环境中用作窗口资料，品质优异。

      3、莫来石电学资料；莫来石的收缩系数和介电系数低，可作为电子资料。微晶莫来石可升高室温电阻率，制成室温低阻的元件。莫来石陶瓷不只扩大了吸波资料的排汇频带，进步吸波资料的效率，减小空气与排汇层界面上电磁波的反射，使得排汇层进入更多的电磁波。

      4、莫来石复合资料；低蠕变的砖块、窑具、高炉陶瓷杯砌体和承烧板等制品，多采纳莫来石复合资料作为陶瓷资料，在刚玉中增加莫来石，失去的复合资料，高强度，高耐磨性以及强抗腐蚀功能等特点，无利于扩散外力，使裂纹变少，进步资料的品质功能，可使用于窑具、低蠕变砖、高炉砌体和耐烧板等畛域。

 

登封市元丰磨料耐材厂

 

地  址：中国河南省登封市卢店镇张家门村

经  理：刘晓平

电  话：

固  话：037

Q   

邮  @.com

网  址：

 

 

 

 

 

 

 

 

 

Introduction of mullite

Mullite is a kind of excellent refractory raw material, natural mullite were very small, usually with sintering, such as synthetic or fused method. Mullite chemical formula: A1xSi2 xO5.5-0.5 x density: 3.16 g/cm3 mohs hardness: 6 ~ 7: refractoriness is stable, while 1800 ° C to 1810 ° C is decomposed into corundum and the liquid phase. Mullite is a kind of high-grade refractory raw materials. , it has the expansion uniformity, excellent thermal shock resistance, high load softening point, high temperature creep value is small, high hardness, good resistance to chemical corrosion, at present there are mainly high purity fused mullite, fused mullite sintered mullite, all natural bauxite concentrate and light mullite.

Sintered mullite is made of high natural bauxite as raw material, after the selection process and multi-stage homogenization, through more than 1750 ℃ high temperature rotary kiln sintering. Fused mullite using highuartz sand, alumina industry, on the large electric arc furnace smelting.

The crystallization of fused mullite is bigger than sintered mullite, thermal shock resistance than sintered products. Their high temperature performance mainly depends on the content of alumina and the uniformity of the distribution of mullite phase glass. It is mainly used for hot blast stove top, blast furnace and furnace bottom, the regenerator of glass furnace, ceramic sintering kiln, petroleum cracking system corner lining, etc. Its raw material combination respectively industry + high purity silica and alumina bauxite clinker + silica.

 

Mullite features

Sintered mullite has high content, volume density, good thermal shock stability, high temperature creep value small and good resistance to chemical corrosion resistance and other characteristics, stable , at the same time, sintered mullite is the production of stereotypes and blank indeterminateness refractories, high-grade sanitary wares, precision casting products such as the ideal raw materials.

Fused mullite is a kind of synthetic fused refractory products, crystal as the needle, it has good thermal shock resistance, flexural strength, high refractoriness under load, high hardness, high temperature creep decrescent, etc. System of fused mullite, should keep the atmosphere in the furnace reduction state.

Fused mullite colour and lustre is white, low carbon residue, low porosity, low content of impurities, flexural strength, high refractoriness under load, high hardness, high temperature creep, acicular crystals have well developed, mullite, with its excellent thermal shock resistance and abrasion resistance, are widely used in glass kiln body lining bricks, mullite bricks, large blast furnace hot blast stove brick and low creep blast furnace sillimanite brick, ceramic kiln furniture, sagger, shed board, oil chemical industry, etc.

 

Mullite application

1, high temperature materials; Mullite with thermal shock resistance, high temperature stability and low inflation, can be widely used in refractory material. High purity of refractory brick in the combustion chamber, sintering furnace, hot blast stove as lining materials; Mullite ceramics can also be used in the place such as crucible, protection tube, thermocouple tube. Because the oxygen diffusion has high permeability, cause ceramic material anti-oxidation ability is weak, limit the applications of the materials. By thermal spraying, brush plating, sol gel, inject ion surface, plasma spraying, physical vapor deposition and physical and chemical vapor deposition method, preparation of mullite coating can prevent environmental media direct contact with the material, improve the high temperature oxidation resistance of oxide material, prolong the service life of materials.

2, mullite Shi Guangxue material; Mullite belong to orthorhombic system, small birefringence, certain conditions can get transparent ceramics. Mullite and good capability of infrared transparent, can be in harsh environments, such as high temperature, corrosion is used as the window material, good .

3, mullite electronic materials; The coefficient of expansion of mullite and low dielectric coefficient, can be used as electronic materials. Microcrystalline mullite can reduce the room temperature resistivity, made from room temperature low resistance element. Mullite ceramics not only expanded the absorption band of absorbing material, improve the efficiency of absorbing material, reduce the air interface of electromagnetic wave reflection and absorption layer, absorbing layer into more electromagnetic waves.

4. Mullite composites; Low creep brick, the kiln furniture, ceramic cup masonry and bearing plate burning blast furnace burden and other products, with mullite as ceramic materials, composite materials added in the corundum mullite, composite materials, high strength, high wear resistance and strong erosion resistance and other characteristics, is conducive to disperse the external force, make the less crack, improve the of the material properties, and can be used in kiln furniture, low creep brick, masonry and resistance to blast furnace burning plate, etc.

 

登封市元丰磨料耐材厂

 

地   址：中国 河南省 登封市 卢店镇张家门村

经   理：刘晓平

电   话：

固   话：037

Q   

邮   @.com

网   址：

 

Dengfeng city candidates.if your abrasive resistant material factory

Address: China dengfeng city of henan province Lou shop town zhang home village

Manager: xiao-ping liu

Telephone:

Fixed: 037

Q Q:

Mail box: @.com

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耐火温度1770～2000℃（℃）产地登封品牌元丰产品类别莫来石材质铝硅酸盐导热系数（常温）0.056等级一级低温弯折≤≤9.5断裂伸长率9.0抗弯强度14抗压强度13拉伸强度15使用温度600撕裂强度13芯材hdf形态层状形状表面凹凸型