尖晶石是一种镁铝氧化物，其主要成分为氧化铝和氧化镁。

元丰尖晶石可分为很多种，如铝尖晶石、铁尖晶石、锌尖晶石、锰尖晶石、铬尖晶石等。

元丰铝镁尖晶石采用烧结法和电熔法两种生产工艺，原料主要是菱镁矿和工业氧化铝粉或铝矾土。

1、按生产工艺或方法分：烧结铝镁尖晶石（烧结尖晶石）和电熔铝镁尖晶石（电熔尖晶石）。

2、按生产原料可以划分：铝矾土基铝镁尖晶石与氧化铝基铝镁尖晶石（烧结或电熔）。

3、按含量和性能划分为：富镁尖晶石、富铝尖晶石以及活性尖晶石。

4、按氧化镁和氧化铝的指标不同，分富镁尖晶石和富铝尖晶石并应用不同领域。

元丰烧结铝镁尖晶石具有比较好的抗侵蚀、抗腐蚀、抗剥落、抗渣性、抗磨蚀能力，比较耐高温等特点。

元丰电熔镁铝尖晶石是用工业氧化铝和轻烧镁并配入适量的菱镁矿做配合料，在电弧炉内经高温熔制合成的耐火原料。

烧结铝镁尖晶石用于水泥回转窑，用于制作钢包浇注料，提高钢板衬的抗侵蚀能力，也可用于炼钢用耐火材料。

元丰电熔铝镁尖晶石是制造滑板、水口砖、平炉炉砖的常用材料。

Introduction of spinel

Spinel spinel is gens mineral, gem grade are mainly refers to the magnesium aluminate spinel, chemical formula of MgAl2O4, is a kind of magnesium aluminum oxide, the main components in aluminum oxide and magnesium oxide, belongs to the cubic system, crystal morphology of octahedral and octahedral and dodecahedron diamond shape, vitreous luster, transparency, refractive index of , homogenate, hardness of 8, g/cm3 density, conchoidal fracture. Pink and red spinel red fluorescence distributed in long and short wave ultraviolet light. Magnesium aluminate spinel is widely used in refractory material, steel smelting, cement rotary kiln and glass kiln.

Spinel is composed of magnesium aluminum oxide mineral, because of containing magnesium, iron, zinc, manganese and so on elements, they can be divided into a lot of kinds, such as aluminum spinel, hercynite spinel, zinc, manganese spinel, chrome spinel etc. Because contain different elements and different spinel can have different colors, such as magnesium spinel in red, blue, green, brown, or between the colorless; Zinc spinel is green; Spinel is black, and so on. Spinel is hard vitreous octahedron or particle and block. Spinel available heat treatment to improve the color. In the 900 ℃ heating into green blue, heated to 1200 ℃ to yellow. This kind of changing color effect is stable. Will also have red spinel heat remove brown to obtain pure red.

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.

1, according to the production process or method points: sintered alumina magnesia spinel (sintered spinel) and fused alumina magnesia spinel, fused spinel).

2, according to the production of raw materials can be divided into: bauxite alumina magnesia spinel with alumina aluminum magnesium spinel (sintered or fused).

3, according to the content and performance are divided into: magnesium rich spinel, rich spinel aluminum spinel and activity.

Spinel characteristics

Sintered alumina magnesia spinel has good erosion resistance, corrosion resistance, spalling resistance capability is strong, good slag resistance, strong abrasion resistance, good thermal stability, high temperature resistant characteristics. Fused spinel has the secret of high temperature resistant, body, bibulous rate is low, small thermal expansion coefficient, good thermal stability, strong ability to resist erosion characteristics.

Fused magnesium aluminate spinel with a purity of % or more industrial alumina and a purity of 96% or more light burning magnesium and distribution into the right amount of high purity magnesite (MgO style > 47%) mixtures, Canon of high temperature melt in arc furnace synthetic refractory raw material, the grain growth is good, dense texture, uniform structure, is made of high strength, good thermal shock stability spinel (periclase advanced refractory products of a kind of high-grade raw materials).

登封市元丰磨料耐材厂

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