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A nano-zinc oxide and a preparation process technology, applied in the field of nano-zinc oxide preparation technology, can solve problems such as unfavorable industrial production and cost saving, large labor consumption, cumbersome process, etc., so as to save labor costs and water resources, save production costs, Reasonable effect of preparation process
Active Publication Date: 2018-07-24
江苏万祥锌业股份有限公司
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At present, acid methods such as sulfuric acid, nitric acid and carbonic acid are mostly used in China to dissolve and make zinc liquid, and two major production methods are based on the use of alkaline solutions such as ammonia water to dissolve and make zinc liquid; the above-mentioned methods have deficiencies. : Reactants and by-products are produced in the process, which requires a cumbersome washing process to remove impurities; the process is cumbersome, there are many types of equipment, long working hours, and large labor consumption, which is not conducive to industrial production and cost saving
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[0038] The present invention is described below in conjunction with accompanying drawing.
[0039] as attached figure 1 Shown is a nano-zinc oxide preparation process of the present invention, including oxide dissolution, oxidation reaction, replacement reaction, synthesis reaction, washing, rinsing and drying and calcining process steps; the specific process steps of embodiment one are as follows:
[0040] 1) oxide dissolution
[0041] The reaction equation is:
[0042] ZnO+H 2 SO 4 =ZnSO 4 +H 2 o
[0043] CuO+H 2 SO 4 =CuSO 4 +H 2 o
[0044] FeO+H 2 SO 4 =FeSO 4 +H 2 o
[0045] MnO+H 2 SO 4 =MnSO 4 +H 2 o
[0046] During production, dilute the concentrated sulfuric acid with water to 10% in the acidolysis tank, and then add the by-product zinc oxide raw material after stirring evenly. The zinc in the raw material mainly exists in the form of zinc oxide, and the by-product zinc oxide reacts with sulfuric acid in sulfuric acid solution to form Zinc sulfat...
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Abstract
A nanometer zinc oxide preparing process is disclosed. The process includes steps of oxide dissolving, oxidation, displacement, synthesis, washing and bleaching, and drying and calcinating. The process is reasonable in steps. A product can be recycled, and a washing step is simple, free of blind zones and capable of thorough cleaning. The labor cost and the water resource are saved. A synthesis rate is high and a production cost can be saved.
Description
technical field [0001] The invention relates to a nano-zinc oxide preparation process with reasonable preparation process, recyclable production, high synthesis rate, safety and environmental protection. Background technique [0002] The particle size of nano zinc oxide is between 1-100nm. It is a new type of high-function fine inorganic product facing the 21st century, which exhibits many special properties, such as non-migration, fluorescence, piezoelectricity, absorption and scattering of ultraviolet rays Capability, etc., using its wonderful properties in light, electricity, magnetism, sensitivity, etc., can manufacture gas sensors, phosphors, varistors, ultraviolet shielding materials, image recording materials, piezoelectric materials, varistors, high-efficiency catalysts, and magnetic materials. and plastic films, etc. At present, acid methods such as sulfuric acid, nitric acid and carbonic acid are mostly used in China to dissolve and make zinc liquid, and two major...
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