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Boron magnesium mud is an industrial waste material, mainly composed of magnesium oxide (about 40%), as well as impurities such as CaO, MnO, Fe 3-2, FeO, alumina and SiO 2. (1) the preparation of sulfuric acid solution requires containers such as beaker, measuring cylinder, glass rod, measuring bottle and glue head dropper,Give A, D, E in the title,Therefore, the answer is: A, D, E;,With reduction,Oxidation-reduction reaction with NaClO can occur,---O,---O;,No reaction,Outside,,;(4) Add boron acid mud,Adjust the PH of the solution at 5 ~ 6,Precipitation,And can consume NaClO,Can be removed,Therefore, the answer is: adjust the pH of the solution,Complete hydrolysis,Remove the excess NaClO;The solubility changes little with temperature,Easily soluble in water at high temperature,Heat filtration is conducive to the separation of calcium sulfate and magnesium sulfate,Crystals precipitate at low temperature,Therefore, the a

What are the nano materials? Nano-materials can be roughly divided into four categories: Nano-powder, nano-fiber, nano-film and nano-block.Among them, nano-powder has the longest development time and the most mature technology,Is the basis for the production of other three types of products.Nano-ceramic materials developed by nano-technology are modified by nano-powders,By adding or generating nano-scale particles, transistors, wafer fibers, etc. to the ceramics,So that the grain, grain boundaries and the combination between them reach the nano-level,The strength, toughness and super-plasticity of the material are greatly improved.It overcomes many shortcomings of engineering ceramics,And have an important impact on the mechanical, electrical, thermal, magnetic and optical properties of the material,In order to replace the application of engineering ceramics has opened up a new field.With the wide application of nanotechnology,Nano-ceramic,The fragility of ceramic materials,Make the ceramic like