Zirconia or alumina hollow ball grading machine and method for grading hollow balls

Abstract

The invention provides a zirconia or alumina hollow ball grading machine, comprising a material bin for storing the un-separated mixture, a feeding device for conveying mixtures and a ball body separation device. The zirconia or alumina hollow ball grading machine is characterized in that the ball body separation device is a sorting conveying belt with conveying direction inclining from bottom totop; and the sorting conveying belt has a coarse surface. The zirconia or alumina hollow ball grading machine mainly solves the technical problem of effectively separating the zirconia or alumina hollow ball mixtures into different sorts. The zirconia or alumina hollow ball grading machine overcomes the actuality that the nonmetal hollow ball mixtures are difficult to separate in the professionalfield; the manpower resource is greatly saved; the optimization of the manpower resource configuration is benefited; the production efficiency is greatly improved; the production cost is reduced; by adopting the machine for separation, the mechanization degree is greatly improved, the separation specification is more standard; the separation can be carried out more precisely; the operation is stable, and the zirconia or alumina hollow ball grading machine has a simple structure in the whole.

Description

technical field [0001] The invention relates to the field of metallurgical machinery, in particular to a sorting machine for zirconia or alumina hollow balls and a method for sorting the hollow balls. Background technique [0002] In the metallurgical refractory industry, oxide hollow balls are an intermediate raw material and a commodity that can be used directly, such as alumina hollow balls and zirconia hollow balls. The characteristics of zirconia balls are: high temperature resistance, chemical resistance Corrosion, oxidation resistance, wear resistance, large thermal expansion coefficient, small specific heat capacity and thermal conductivity. Therefore, it is an ideal high-temperature refractory material, abrasive material and high-temperature insulation material. [0003] The production process of this kind of hollow ball is: the raw material is melted in a high-temperature electric arc furnace, and the hollow ball produced by blowing compressed gas (such as air and...

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Problems solved by technology

[0003] The production process of this kind of hollow ball is: the raw material is melted in a high-temperature electric arc furnace, and the hollow ball produced by blowing compressed gas (such as air and water vapor), but the actual blown products are hollow balls and oval balls of different diameters. , Broken spheres, solid spheres, irregular particles, impurities and other mixtures are not exactly the thin-walled round hollow spheres that people want, and the proportion of qualified products is about 80%. Other materials are unqualified products and need to be separated. After being opened and returned to the furnace for reprocessing, and the produced mechanical iron and other impurities must be removed, if these balls are used directly, it will have a serious impact on production and operation

[0004] It can be seen from the above that the sorting of hollow spheres is a very important process. The quality sorting of zirconia or alumina hollow spheres is still in the manual stage. The manual sorting method currently used in the market has a low degree of automation, and the required Lots of labor, low production efficiency and high production cost, which is a double waste of human resources and material resources

This requires a device to separate these mixtures. Although there are many types of existing sorting machines, similar to grain sorting machines, there is no special equipment for sorting zirconia or alumina spheres, functions and effects It cannot meet the sorting requirements of such non-metallic hollow spheres

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