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The aluminium oxide 36 grit compound of calcium and magnesium will reduce the fire resistance of clay, narrow the sintering range, and cause blistering when it is excessive. Clay with more organic matter and strong water absorption has higher plasticity, higher strength after drying, but also larger shrinkage. There are five types of clay minerals: kaolinite, illite, montmorillonite, hydrotalcite and pyrophyllite. Clay is composed of many aluminium oxide sandblasting minerals.

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The technological properties of clay include plasticity, shrinkage, garnet abrasive sintering temperature and sintering range. It mainly depends on its chemistry, mineral composition and particle size. When clay is mixed with a proper amount of water, it will form a mud mass, which will deform but not crack under the action of external force. When the external force is removed, refining mud for steel grid many times, it can still keep its shape unchanged. This property is called plasticity of clay.

(cheap corundum sand wholesale suppliers france)The necessary condition for the plasticity of clay is the existence of liquid. Generally speaking, the brown aluminum oxide finer the clay particles, the greater the dispersion (the larger the specific surface area) and the better the plasticity. The amount of water directly affects the plasticity of clay. Too much or too little water will make clay lose plasticity. The corundum sand plasticity was improved by washing to remove non plastic substances, aging of mud and adding colloidal substances.

The greater the plasticity, the greater the water absorption. The plasticity of clay can be reduced by garnet suppliers adding materials such as quartz, clay with poor plasticity or heated clay. The expression methods include plasticity index, plasticity index and working water content. The aluminum oxide sandblasting media organization number is represented by a number symbol. The content of Fe2O3 and TiO2 in clay will affect the color of the products after burning. The sum of the two is called total contraction.(cheap corundum sand wholesale suppliers france)

When the clay is dry, the loose combined water among the particles is discharged, and the brown fused alumina particles are close to each other. The volume shrinkage produced is called drying shrinkage. The corresponding temperature is the complete sintering temperature, which is called the black aluminum oxide abrasive 70 grit sintering temperature (T2). Vein quartz and quartzite are the main components used as binder. It has no fixed melting point and is gradually softened in a considerable range. 

(cheap corundum sand wholesale suppliers france)In the glass bead blasting media suppliers process of calcination, the volume shrinkage of the bad body caused by the removal of structural water and a series of physical and chemical reactions is called sintering shrinkage. Generally, the higher the plasticity of clay is, the greater its shrinkage is, and the excessive shrinkage is easy to crack the product. The refractoriness of the binder (the refractoriness of kaolinite reaches 1730 ℃ ~1770 ℃) and the black synthetic corundum high temperature viscosity are increased.

Generally speaking, when the brown aluminium oxide temperature is more than 800 ℃, the volume of clay sample begins to shrink sharply, and the porosity begins to decrease obviously. This kind of temperature which starts to change dramatically is called the starting sintering temperature. When the temperature continues to rise to a certain value, the open porosity decreases to the minimum, the shrinkage reaches the maximum, and the density of the pink aluminium oxide sample is the highest.(cheap corundum sand wholesale suppliers france)