Supercharge Your Innovation With Domain-Expert AI Agents!

Method for purification of zircon sand to prepare high purity zirconia

A technology of zirconia and zircon sand, applied in zirconia and other directions, can solve the problems of polluted air, large energy consumption, difficult environmental treatment, etc., and achieve the effect of simplifying production process, saving energy and improving production efficiency

Inactive Publication Date: 2013-08-21
SHANDONG LEIBAO ZIRCONIUM SCI&TECH
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past, high-purity zirconia was prepared by alkaline earth metal oxide decomposition method, carbonation chlorination method and plasma thermal decomposition method. The reaction and purification at more than 2000 degrees required a lot of energy consumption, and a large amount of chlorine gas was emitted during production. Air pollution is very difficult to control the environment

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Ingredients: mix zircon sand powder, industrial ammonium sulfate press and sulfuric acid in a mass ratio of 1:3:5;

[0020] (2) Acidification reaction: roast the above mixture at 200°C to make it react to generate sulfate;

[0021] (3) Leaching: adding sulfate into water for leaching, the solid-to-liquid ratio of the product after the acidification reaction and water is 1:4.5, the temperature is controlled at 65°C, and the leaching time is controlled at 2.5h;

[0022] (4) Filtration: after the leaching ends, carry out solid-liquid separation with a plate and frame machine, and filter out the clear liquid;

[0023] (5) metathesis: add ammoniacal liquor to carry out metathesis reaction in clear liquid, control pH value to be 4;

[0024] (6) Press filtration: the metathesis reaction product is press-filtered with a plate and frame machine;

[0025] (7) Washing: the filter residue that press filtration obtains is washed 5 times with water;

[0026] (8) Roasting: the ...

Embodiment 2

[0029] (1) Ingredients: mix zircon sand powder, industrial ammonium sulfate press and sulfuric acid in a mass ratio of 1:2:4;

[0030] (2) Acidification reaction: roast the above mixture at 600°C to make it react to generate sulfate;

[0031] (3) Leaching: adding sulfate into water for leaching, the solid-to-liquid ratio of the product after the acidification reaction and water is 1:6, the temperature is controlled at 55°C, and the leaching time is controlled at 2h;

[0032] (4) Filtration: after the leaching ends, carry out solid-liquid separation with a plate and frame machine, and filter out the clear liquid;

[0033] (5) metathesis: add ammoniacal liquor to carry out metathesis reaction in clear liquid, control pH value to be 5;

[0034] (6) Press filtration: the metathesis reaction product is press-filtered with a plate and frame machine;

[0035] (7) Washing: the filter residue that press filtration obtains is washed 3 times with water;

[0036] (8) Roasting: The wash...

Embodiment 3

[0039] (1) Ingredients: mix zircon sand powder, sulfuric acid and industrial ammonium sulfate in a mass ratio of 1:3:4;

[0040] (2) Acidification reaction: roast the above mixture at 900°C to make it react to generate sulfate;

[0041] (3) Leaching: adding sulfate into water for leaching, the solid-to-liquid ratio of the product after the acidification reaction and water is 1:5, the temperature is controlled at 75°C, and the leaching time is controlled at 3h;

[0042] (4) Filtration: after the leaching ends, carry out solid-liquid separation with a plate and frame machine, and filter out the clear liquid;

[0043] (5) metathesis: add ammoniacal liquor to carry out metathesis reaction in clear liquid, control pH value to be 4.5;

[0044] (6) Press filtration: the metathesis reaction product is press-filtered with a plate and frame machine;

[0045] (7) Washing: the filter residue that press filtration obtains is washed 4 times with water;

[0046] (8) Roasting: the washed f...

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

No PUM Login to View More

Abstract

The invention relates to a preparation method of high purity zirconia, particularly to a method for purification of zircon sand to prepare high purity zirconia. The method is characterized by: subjecting the zircon sand to an acidification reaction to convert the zirconia component therein into zirconium sulfate, reacting the zirconium sulfate with lye to generate zirconium hydroxide, and finally carrying out roasting so as to obtain the high purity zirconia. The method provided in the invention has the advantages of saving energy, simplifying production process and improving production efficiency. The obtained product is white in color, the mass content of ZrO2 is greater than or equal to 99.5%, and the impurity content is low.

Description

technical field [0001] The invention relates to a method for preparing high-purity zirconia, in particular to a method for purifying and preparing high-purity zirconia from zircon sand. Background technique [0002] Zircon sand is mainly used in ordinary refractory materials, such as glass kiln bricks, coatings and other common industries. In order to improve its use value, we have invented a new method to purify and produce high-purity zirconia. This method is different from the previous one. Compared with the old process, the energy is reduced and there is no pollution. Zirconia is a high-grade refractory material with good thermal stability. Pure zirconia is a white solid, and it will appear gray or light yellow when it contains impurities. Due to the excellent physical and chemical properties of zirconia materials such as high hardness, high strength, high toughness, extremely high wear resistance and chemical corrosion resistance, zirconia has been used in ceramics, re...

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
IPC IPC(8): C01G25/02
Inventor 王光强陈杰刘学燕
Owner SHANDONG LEIBAO ZIRCONIUM SCI&TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com