Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process and equipment for preparing nm zinc oxide

A technology of nano-zinc oxide and production method, applied in chemical instruments and methods, zinc oxide/zinc hydroxide, zinc compounds, etc., can solve the problem that the particle size range and particle shape are difficult to effectively control, and it is difficult to realize thermodynamic quasi-static process. , can not guarantee the full completion of thermal decomposition and other problems, to achieve obvious economic and social benefits, simple structure, low cost effect

Inactive Publication Date: 2005-03-23
重庆天悟纳米技术有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common method is to use the general precipitation method to prepare the precursor of nano-zinc oxide-basic zinc carbonate, that is, the method of single injection and stirring, but these methods are difficult to realize the thermodynamic quasi-static process, and cannot ensure that the thermal decomposition is fully completed, and it is difficult to obtain It is difficult to effectively control the particle size range and particle shape of the uniform and fine nano-zinc oxide precursor basic zinc carbonate, which must be related to the quality of the final product nano-zinc oxide, so the special use of nano-zinc oxide will be greatly reduced
"Fine Chemical Industry" 99, 16 (2), the "preparation of zinc oxide nanoparticles" disclosed in 26-28 adopts the method of roasting the salinized gel-like precursor first, and then rinsing with distilled water to remove zinc sulfate. The diameter is 10, 14, 20nm, which adopts chemical analysis pure preparation, which is not conducive to industrial production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process and equipment for preparing nm zinc oxide
  • Process and equipment for preparing nm zinc oxide
  • Process and equipment for preparing nm zinc oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The preparation of zinc sulfate can take low-grade zinc oxide or zinc ore as raw material, react with dilute sulfuric acid solution to make crude zinc sulfate solution, heat the solution to 80-90°C, add potassium permanganate to oxidize and remove iron, Manganese, then heated to 80°C, adding zinc powder, replacing copper and cadmium in the solution, and after the replacement, used potassium permanganate to oxidize and remove impurities for the second time at 80-90°C to obtain a refined zinc sulfate solution, which was prepared into 0.1 mol / L.

[0013] see figure 1 , the process flow is a two-stage spray synthesis method. The prepared zinc sulfate solution is heated at 80-90°C, connected to the feed pipe 2 of the nozzle 1, and sprayed into the nozzle 1 at a high speed under the condition of 0.4Mpa and placed at the entrance of the mixing chamber. Negative pressure is generated, so that the sodium hydroxide solution connected to the feeding pipe 3 is sucked into the mixi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

A process and equipment for preparing nm-class zinc oxide is disclosed. The said process includes synthesizing the precursor by wet chemical method and multi-stage spraying while controlling the temp, concentration and pressure of sprayed out solution, baking, calcium and washing in water. The said equipment is a reactor with dual nozzle on top and side nozzles.

Description

technical field [0001] The invention relates to a production method of nanometer zinc oxide, in particular to the preparation and production of nanometer zinc oxide with a narrow particle size and a device for realizing the method by using wet chemical method and multi-stage spray synthesis. Background technique [0002] Due to its strong tinting power and covering power, nano-zinc oxide has a strong absorption capacity for ultraviolet rays, and can be widely used in cosmetics, printing and dyeing, textile, paper, chemical and other industries, and can replace ordinary zinc oxide. In addition to greatly improving product quality, it also The dosage can be reduced. In the prior art, researches on methods for preparing nano zinc oxide at home and abroad include methods such as evaporation condensation method, chemical vapor deposition method, sol-gel method and the like. The most common method is to use the general precipitation method to prepare the precursor of nano-zinc ox...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/26C01G9/00C01G9/02
Inventor 张德福
Owner 重庆天悟纳米技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com