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Dolomite Refractories Processing With Ultrafine Mill

Dolomite Refractories Processing With Ultrafine Mill

Dolomite in its rich reserves, mainly in Hebei, Hubei, Guangxi, Shaanxi and other places, processing equipment is mainly dolomite processing for Ultrafine Mill. Dolomite is the main alkaline refractory, due to the dissolution of the characteristics of limestone and periclase, it has a high alkalinity, high temperature, stable thermodynamic properties, thermal shock resistance, and can purify molten steel, anti-corrosion, etc. advantage. The early dolomite refractory synthesis process uses a two-step roasting method: the dolomite is burned directly to a dense sintered body and then pulverized using an ultrafine mill, but this process is subject to uneven composition of the natural dolomite, Impurities and other conditions of the higher constraints, its performance has been greatly affected.

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Is mainly used in two-stage calcination of dolomite: dolomite produced under firing conditions 1000 ℃ --1200 ℃ mixture of MgO and CaO is called light burned dolomite, its activity large, prone to hydration The formation of Mg (OH) 2 and Ca (OH) 2, the amount and performance has been affected. When machining using the Ultrafine Mill, due to hydration phenomena, light burned dolomite as a raw material to produce refractory bricks are formed hydrate easily absorbs moisture in the air, so that calcium and magnesium or brick powder Cracking.

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In order to enhance the light-burned dolomite hydration resistance, usually used at 1400 ℃ -1500 ℃ for second roasting, the second roasted mixture is called dead burned dolomite, with little activity, high stability, high crystallinity, chemical composition distribution, the advantage of dense tissue structures, but also improve the hydration resistance of dolomite refractory and slag resistance, may be added in the preparation of the density of the joint action activator higher sintering temperatures lower Dolomite refractory. In the Ultrafine Mill milling, the need to use additives on the dolomite surface and internal structure of the two can also be modified to promote its anti-slag erosion after erosion performance.

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Dolomite Refractories Processing With Ultrafine Mill
Dolomite Refractories Processing With Ultrafine Mill

Dolomite Refractories Processing With Ultrafine MillDolomite in its rich reserves, mainly in Hebei, Hubei, Guangxi, Shaanxi and other places, processing equipme


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Dolomite Refractories Processing With Ultrafine Mill

Dolomite Refractories Processing With Ultrafine MillDolomite in its rich reserves, mainly in Hebei, Hubei, Guangxi, Shaanxi and other places, processing equipme