The magnesium oxide belongs to the cubic system, the melting point is about 2800℃. The theoretical density is 3．56～3．65g/cm^3, Moh’s hardness is from 5 to 6. Under the high temperature, the resistance value of specific volume is high and has good electrical insulation. Because the magnesium oxide is easy to volatile when the temperature is…
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There are some preparation methods to manufacture AR magnesium oxide. In the previous, we talked about the vapor phase method. Today, let us talk about the magnesium hydroxide calcination method, which is one of the preparation methods. It uses the magnesium sulfate solution as raw material to edulcorate and refine. Regarding the purity aqueous ammonia…
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Using special autoclave, it researches the hydration process of fused magnesium oxide monocrystal in saturated steam and the high purity sand from 135℃ to 200℃. Therefore, the obtained conclusions are: (1)In the early stage and short time, the hydration of single crystal is slowly. And then, it achieves the promotion phase and lag phase. During this…
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There are some preparation methods to manufacture AR magnesium oxide. Today, let us talk about the vapor phase method, which is one of the preparation methods. Firstly, the high purity magnesium metal can react with oxygen to form the crystal nucleus. And then, the particle continue to grow, and it is obtained high purity magnesium…
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During the reaction of magnesium sulfate and sodium bicarbonate, at first, the magnesium hydrate colloidal sediment particles have strong adsorption capacity. It can adsorb the ion in the amboceptor. With the temperature increasing, the magnesium hydrate and magneisum carbonate start to appear in the system of magnesium carbonate and sodium bicarbonate. After increasing to a…
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The pharmaceutical grade magnesium carbonate of Hebei Meishen Technology Co., Ltd introduces advanced technology, skill and production line. In order to better ensure product quality and model efficiency, it mainly includes the following ways: The most advanced production line and equipment to manufacture pharmaceutical grade magnesium carbonate in the world: It adopts the current world’s…
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The magnesium oxide a kind of white and shapeless powder, and colorless, tasteless, non-toxic. The relative density is 3.85(25℃), melting point is 2852℃ and the boiling point is 3600℃. What’s more, it is excellent refractory matter, fire pipe, crucible and others. The single crystal magnesium oxide means that the content of MgO is more than 99.95%. It…
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Not all the magnesium oxide can be used in CPE. Because the quality of magnesium oxide has significant implications for the performance of rubber type chlorinated polyethylene. Generally speaking, according to the bulk density, the magnesium oxide can be divided into light magnesium oxide and heavy magnesium oxide. According to the chemical active degree, it…
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In order to improve high-temperature behavior of magnesia refractory material, it can obtain the high purity MgO concentrate(magnesite). Because the content of magnesium oxide has been improved, the sintering become more difficult. In order to reduce the sinter point of high pure magnesia refractory material, it selects calcination again. Firstly, it should roast the raw…
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