尖晶石产品介绍
尖晶石是镁铝氧化物组成的矿物，因为含有镁、铁、锌、锰等等元素，它们可分为很多种，如铝尖晶石、铁尖晶石、锌尖晶石、锰尖晶石、铬尖晶石等。由于含有不同的元素，不同的尖晶石可以有不同的颜色，如镁尖晶石在红、蓝、绿、褐或无色之间；锌尖晶石则为暗绿色；铁尖晶石为黑色等等。尖晶石呈坚硬的玻璃状八面体或颗粒和块体。它们出现在火成岩、花岗伟晶岩和变质石灰岩中。有些透明且颜色漂亮的尖晶石可作为宝石，有些作为含铁的磁性材料。用人工的方法已经可以造出 200多个尖晶石品种。
铝镁尖晶石属于一种铝镁氧化物，其主要成分为氧化铝和氧化镁。铝镁尖晶石有天然形成和人工合成两种。天然镁砂尖晶石极少发现，工业上应用的铝镁尖晶石全部都是人工合成的，合成铝镁尖晶石的两个主要方法是烧结法和电熔法。多数尖晶石材料是由高纯合成氧化铝和化学级氧化镁制成，即在竖窑烧结和在电弧炉内电熔。
尖晶石与石榴子石均为均质体，偏光镜下也都有异常消光，但尖晶石的折射率明显低于石榴子石，吸收光谱也很不同。此外，尖晶石内部常见单个或成排排列的八面体包裹体，镁铝榴石中多见浑圆状包裹体。
尖晶石可用热处理改善颜色。蓝色者在900℃加热变成绿色，加热到1200℃变成黄色。这种改色效果稳定。也有将红色尖晶石加热去掉棕色成分获得纯红色的报道。
尖晶石物理性质
尖晶石（Spinel）
化学分子式为MgAl2O4
晶系：属等轴晶系
结晶习性：常呈八面体晶形，有时八面体与菱形十二面体、立方体成聚形。
光泽：玻璃光泽至亚金刚光泽
透明度：透明至不透明
折光率：1.718，因含微量元素不同而改变最高可至2.000.无双折射无多色性
特殊光学效应：星光效应（四射或六射），变色效应。比较稀少
硬度：8
密度：3.60（+0.10，-0.03）克/立方厘米
尖晶石理化指标
项目 | Al2O3 | MgO％ | SiO2% | 体密g/cm3 | 气孔率% | 尖晶石% | 硅酸盐% |
指标 | 56-62 | 28-32 | <4.0 | <3.0 | <9.0 | 85-90 | 10 |
尖晶石用途
烧结铝镁尖晶石用于水泥回转窑，不但避免了铬公害，而且具有良好的抗剥落性。烧结铝镁尖晶石用于制作钢包浇注料，大大提高钢板衬的抗侵蚀能力，使烧结铝镁尖晶石广泛应用于炼钢用耐火材料。优质预合成尖晶石的制取为不定形及定形高纯耐火材料的生产提供了新的原料。
电熔铝镁尖晶石是制造滑板、水口砖、平炉炉砖的理想材料。铝镁尖晶石制品的高温力学性能良好，是大型水泥窑中性水泥窑过滤带、耐火浇注料、高中窑具的基本原料。电熔铝镁尖晶石用于钢铁冶炼、玻璃工业窑炉。
联系方式
单位名称：登封市卢店镇星光磨料磨具厂
联系人：白经理
固话：
电话：
工厂地址：河南省登封市卢店镇
产品图片
厂区图片
英文翻译
Spinel product introduction
Spinel is a mineral consisting of magnesium oxide, because contain magnesium, iron, zinc, manganese, and the number of elements, which can be classified into many types, such as aluminum spinel, spinel iron, zinc spinel, spinel, chrome spinel and so on. Due to different elements, different spinel can have different colors, such as magnesium spinel in red, blue, green, brown or colorless; zinc spinel is dark green; iron spinel for black and so on. Spinel is hard glass like eight bodies or particles and blocks. They appear in igneous rocks, granitic pegmatite and metamorphic limestone. Some of the transparent and coloured spinel can be used as a gem, some of which are used as magnetic materials. Artificial method has been able to create more than 200 varieties of spinel.
Al Mg spinel is a kind of aluminum magnesium oxide, its main component is alumina and Magnesium Oxide. Al Mg spinel has two kinds of natural formation and artificial synthesis. Natural magnesia spinel rarely found industrial applications of magnesium aluminum spinel are all artificial synthesis, the two main methods of synthetic magnesia alumina spinel is sintering and electric melting method. Most spinel material is made from high purity synthetic alumina and chemical grade magnesium oxide, namely in shaft kiln sintering and fused in arc furnace.
Spinel and garnet Shi Junwei homogeneous body, under polarizing microscope also has the unusual extinction, but the spinel refractive index is lower than garnet, the absorption spectrum is also very different. In addition, the internal common single or spinel inclusions surface into eight rows, see Pyropes rounded inclusions.
Spinel can be used to improve the color of heat treatment. The blue is heated at 900 degrees to green, and heated to 1200. This kind of color changing effect is stable. There are also red spinel heating to remove the brown component to obtain a pure red.
Spinel application
Sintered magnesia alumina spinel is used for cement rotary kiln, which not only avoids chromium pollution, but also has good resistance to spalling. Sintered magnesia alumina spinel is used for making ladle pouring material, which can greatly improve the anti erosion ability of steel sheet lining. The preparation of high quality synthetic spinel provides a new raw material for the production of amorphous and amorphous high purity refractory materials.
Electric melting magnesium aluminum spinel is manufacturing plate, nozzle brick, open hearth brick material. The high temperature mechanical properties of aluminum and magnesium spinel products are good, which are the basic raw materials of the filter belt, refractory casting material and high. Fused magnesia alumina spinel used in iron and steel smelting and glass industry furnace.
contact information
Company name: Dengfeng abrasive factory
Contact: white Manager
Telephone:
Tel:
Factory address: Dengfeng City, Henan Province, Lu Zhen
联系方式
单位名称：登封市卢店镇星光磨料磨具厂
联系人：白经理
固话：
电话：
工厂地址：河南省登封市卢店镇