Preparation method of silicon-steel-level magnesium oxide coating
A technology of magnesium oxide and silicon steel grade, which is applied in the field of preparation of magnesium compounds, can solve the problems of long process flow, poor physical properties, and low chemical purity, and achieve high chemical purity, low hydration rate, and good suspension.
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Embodiment 1
[0009] Example 1: Select natural aphanitic magnesite to produce light-burned magnesia powder; digest light-burned magnesia, neutralize and decalcify with acid and alkali, react at a temperature of 15°C for 5 minutes to generate hydrogen oxide Magnesium, then washed with water, filtered, dried, and then calcined at a temperature of 1050°C for 1.5 hours to obtain high-purity light-burned magnesium oxide powder; processed into the required micron-sized particle size segment by jet milling.
Embodiment 2
[0010] Example 2: Select natural aphanitic magnesite to produce light-burned magnesia powder; digest light-burned magnesia, neutralize and decalcify with acid and alkali, react at a temperature of 20°C for 10 minutes to generate hydrogen oxide Magnesium, then washed with water, filtered, dried, and then calcined at a temperature of 1100°C for 2.0 hours to obtain high-purity light-burned magnesium oxide powder; processed into the required micron-sized particle size segment by jet mill.
Embodiment 3
[0011] Example 3: Select natural aphanitic magnesite to produce light-burned magnesia powder; digest the light-burned magnesia, neutralize and decalcify with acid and alkali, react at a temperature of 30°C for 15 minutes to generate hydrogen oxide Magnesium, then washed with water, filtered, dried, and then calcined at a temperature of 1150°C for 2.5 hours to obtain high-purity light-burned magnesium oxide powder; processed into the required micron-sized particle size segment by jet milling.
[0012] Through practice, its technical index of the silicon steel grade magnesia coating that the inventive method is made is as shown in table 1:
[0013] Table 1 technical indicators
[0014]
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