Method for rapid measuring aluminum oxide abrasion index

Abstract

The invention relates to a method for rapidly measuring the wear index of alumina, which is characterized in that a laser hondrometer is used to replace a grading way for measuring the grain size distribution; first the contents in percentage of grades are measured for the sample before wearing; then a wear index tester is used to wear the sample, the worn sample is collected, the fine powder lost during wearing is collected by a dust-collecting bag, the fine powder collected by the dust-collecting bag is used to sample the worn sample, which are mixed evenly, then the contents in percentage of grades are measured by a laser way; the wear index of the sample is calculated by the contents in percentage of grades before and after the wearing. The method measures the grain size distribution before and after wearing by a highly automatic laser hondrometer, reduces the influence of any artificial factors on the test results e.g. collecting specimen, weighing and choking test sieve, etc. for a mechanical sieving method; and for the method here, the working efficiency is greatly improved because it is not necessary to take a long time for cleaning and drying the test sieves.

Description

Technical field [0001] A method for quickly determining the abrasion index of alumina relates to a method for determining the abrasion performance of alumina. Background technique [0002] The wear index is one of the important parameters to characterize sandy alumina, and it is an index to measure the strength of sandy alumina. The non-ferrous industry standard YS / T438.2-2001 "Method for the determination of physical properties of sandy alumina-Determination of wear index" uses the sieving method, that is, two samples of alumina to be tested are weighed, and one sample is directly sieved Determine the percentage content of -45μm particle size; another sample is collected in a fluidized bed with a certain airflow circulation for 15 minutes, and then sieved to determine the percentage content of its -45μm particle size, according to the sample wear Before and after the change of the percentage content of the particle size less than (or greater than) 45μm, the wear index of the sam...

AI Technical Summary

Problems solved by technology

This method is suitable for samples with a percentage content of -45μm particle size not greater than 20.0%. For samples with a subdivision content greater than 20.0%, it is easy to cause the test sieve to be blocked, and the test method takes a long time and has a large amount of dust, which requires continuous testing. Collecting and weighing samples is likely to cause human factors to affect the test results. In addition, the test sieve is clogged, and it takes a lot of time to clean and dry the test sieve, which affects the timeliness and accuracy of the test results.