Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for preparing alpha alumina seed suspension

A technology of alpha alumina and suspension, applied in chemical instruments and methods, alumina/aluminum hydroxide, metal processing equipment, etc., can solve problems such as complex process and low production efficiency

Inactive Publication Date: 2017-12-01
王胜国 +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is very complicated, the production efficiency is low, and it needs 3 centrifugation processes

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
  • Method and apparatus for preparing alpha alumina seed suspension
  • Method and apparatus for preparing alpha alumina seed suspension

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The equipment and process for preparing alpha alumina seed crystal suspension of the present invention are as figure 1 , the process of producing seeded sol-gel abrasives is as follows figure 2 . Specific description of the invention is illustrated by the following examples.

[0016] 1.6 liters of deionized water acidified with nitric acid to pH 2.7, 400 grams of 99.99% purity, BET specific surface area of ​​25m 2 / g, alpha alumina powder with an original crystal size of 30 nanometers is mixed in a 3-liter stainless steel container with a high-shear disperser into acidified deionized water to form a slurry, and pumped into a nano-sand mill lined with zirconia, the grinding chamber volume For 0.5 L, the grinding media are 0.2 mm zirconia beads. The slurry circulates between the nano sand mill and the high shear disperser. After 60 minutes, the dispersed particle size of nano-alfa alumina in acidic water tested by laser particle size analyzer is D 50 = 150 nm and D ...

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

A method and apparatus is applied to prepare alpha alumina seed suspension for ceramic abrasive grain manufacture. Nano mill or small media mill is used to prepare alpha alumina seed suspension with very small dispersed particle size, narrow particle size distribution and high productivity.

Description

technical field [0001] The invention relates to a preparation method and equipment for an alpha alumina seed crystal suspension used in the production of ceramic corundum abrasives by a sol-gel method. Nano sand mill or small media grinding machine is used to prepare alpha alumina seed crystal suspension, which has small dispersed particle size, narrow particle size distribution and high production efficiency, which is very important for controlling product performance and improving sol-gel The production efficiency of glue-bonded abrasives is critical. Background technique [0002] Since the early 1980s, sol-gel technology has been used to improve the performance of alumina abrasives, which has had a profound impact on the coated abrasive and bonded abrasive industries. The degree of control of the structure is much greater than that of the electrofusion process. Therefore, the crystal size of the sol-gel abrasive is several orders of magnitude smaller than that of the ele...

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): C01F7/02B02C19/00B24D3/00C01F7/025
CPCC09K3/1409C01F7/025C01P2004/51C01P2004/62
Inventor 王胜国王威
Owner 王胜国