Manufacture of active magnesium oxide
A kind of technology of active magnesium oxide and manufacturing method, applied in the field of inorganic chemical industry
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Embodiment 1
[0024] As shown in Figure 1, after beneficiation, the natural hydromagnesite is crushed with a jaw crusher to a particle size of less than 40mm, and then crushed with a Raymond mill to a particle size of less than 100 mesh, and the obtained hydromagnesite powder is added to the rotary kiln , keep the kiln temperature at 550°C, and the material stays in the kiln for 60 minutes. The magnesia coming out of the kiln is naturally cooled and crushed to 325 mesh with a mechanical pulverizer to obtain active magnesia with an iodine adsorption value of 98mgI / g and a magnesia content of 93.6%.
Embodiment 2
[0026] After beneficiation, the natural hydromagnesite is crushed with a jaw crusher to a particle size of less than 40mm, and then crushed to 100 mesh with a Raymond mill. The obtained hydromagnesite powder is added to a rotary kiln, and the kiln temperature is kept at 450°C. Stay in the kiln for 120 minutes. The magnesia coming out of the kiln is naturally cooled and crushed to 325 meshes with a mechanical pulverizer to obtain active magnesia with an iodine adsorption value of 119 mgI / g and a magnesia content of 91.8%.
Embodiment 3
[0028] After the natural hydromagnesite is beneficiated, it is crushed with a jaw crusher to a particle size of less than 40mm, and then crushed to 100 mesh with a Raymond mill. Stay in the kiln for 30 minutes. The magnesia coming out of the kiln is naturally cooled and crushed to 325 mesh with a mechanical pulverizer to obtain active magnesia with an iodine adsorption value of 81.8mgI / g and a magnesia content of 95.2%.
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