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Engraftment type nano-zinc oxide and production process thereof

A nano-zinc oxide and production process technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of easy reunion of products and insufficient preparation methods, so as to improve purity and quality and expand market adaptability , Eliminate the effect of polarity

Active Publication Date: 2015-05-06
黄有余
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0039] In summary, nano-zinc oxide has broad application prospects, but the current products are easy to agglomerate, and its conventional preparation methods are insufficient.
At the same time, there is no process to prepare nano-zinc oxide by evenly planting basic zinc carbonate crystals on the surface of particles and their inner pores, and using sodium sulfate crystals to evenly isolate them.

Method used

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  • Engraftment type nano-zinc oxide and production process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Such as figure 1 Shown, a kind of planting type nano-zinc oxide and production technology thereof, comprises the following steps:

[0074] (1) Leaching: With sulfuric acid as the leaching solvent, the zinc in the secondary zinc oxide is leached to make zinc sulfate solution; the main reaction formula of this step is as follows:

[0075] ZnO+H 2 SO 4 =ZnSO 4 +H 2 o

[0076] The leaching step is divided into two stages of neutral leaching and acid leaching, which are carried out in two leaching tanks respectively. The filter residue after neutral leaching is added into the acid leaching tank under stirring and then leached, and the acid leaching filter residue is discarded. The acidic leaching solution is added to the neutral leaching tank again as a leaching solvent, and the secondary zinc oxide is put into the neutral leaching tank under stirring, and the leached leaching solution enters the next step, and the cycle repeats like this;

[0077] During the neutral l...

Embodiment 2

[0096] The plant active nano-zinc oxide and its production process of the present embodiment comprise the following steps:

[0097] (1) Leaching: With sulfuric acid as the leaching solvent, the zinc in the secondary zinc oxide is leached to make zinc sulfate solution; the main reaction formula of this step is as follows:

[0098] ZnO+H 2 SO 4 =ZnSO 4 +H 2 o

[0099] The leaching step is divided into two stages of neutral leaching and acid leaching, which are carried out in two leaching tanks respectively. The filter residue after neutral leaching is added into the acid leaching tank under stirring and then leached, and the acid leaching filter residue is discarded. The acidic leaching solution is added to the neutral leaching tank again as a leaching solvent, and the secondary zinc oxide is put into the neutral leaching tank under stirring, and the leached leaching solution enters the next step, and the cycle repeats like this;

[0100] During the neutral leaching, second...

Embodiment 3

[0119] The plant active nano-zinc oxide and its production process of the present embodiment comprise the following steps:

[0120] (1) Leaching: With sulfuric acid as the leaching solvent, the zinc in the secondary zinc oxide is leached to make zinc sulfate solution; the main reaction formula of this step is as follows:

[0121] ZnO+H 2 SO 4 =ZnSO 4 +H 2 o

[0122] The leaching step is divided into two stages of neutral leaching and acid leaching, which are carried out in two leaching tanks respectively. The filter residue after neutral leaching is added into the acid leaching tank under stirring and then leached, and the acid leaching filter residue is discarded. The acidic leaching solution is added to the neutral leaching tank again as a leaching solvent, and the secondary zinc oxide is put into the neutral leaching tank under stirring, and the leached leaching solution enters the next step, and the cycle repeats like this;

[0123] During the neutral leaching, zinc o...

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Abstract

The invention relates to the technical field of the petrochemical and chemical fine chemicals and particularly relates to an engraftment type nano-zinc oxide and a production process thereof. According to the production process, a leaching purification process is changed to reduce the contents of the heavy metal impurities such as lead, cadmium, copper, arsenic so as to increase the purity and the quality of the product; the concentration of the reactant zinc is changed to increase the yield of the nano-zinc oxide; the catalyst is changed to eliminate the polarity of the zinc oxide and reduce the aggregation degree of the nano-zinc oxide; a salt-milling process is added to reduce the grain size, increase the specific surface area and improve the activity; at the same time, the types of the disperser are added to enrich the types of the product, adapt to various uses and expand the market adaptability of the product.

Description

technical field [0001] The invention relates to a petrochemical and chemical fine chemical and its production process, in particular to a plant-based nano-zinc oxide and its production process. Background technique [0002] Nano zinc oxide is a new type of fine inorganic chemical product with multiple functions and high added value. It refers to zinc oxide with special properties that has at least one dimension in the three-dimensional space between 1-100 nanometers or composed of them as basic units, also known as ultra-fine zinc oxide. Due to the miniaturization of the scale, the specific surface area increases sharply, and its surface electronic structure and crystal structure change, resulting in surface effects, volume effects, quantum size effects and macroscopic tunnel effects that macroscopic objects do not have, as well as high transparency and high dispersion. features. Research in recent years has found that it has special properties and new uses that cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y30/00
Inventor 黄有余
Owner 黄有余
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