Patent ID: 9403194
Filing Date: 2016-08-02
CPC Classification: B07C,C04B,F27B,Y10T

Claim Text:
1. A method for protecting a surface of an optical sorting apparatus that is subject to wear, the apparatus being configured to sort a material based on characteristics including color, the wear being associated with the material contacting the surface, the method comprising covering the surface with a colored wear tile so as to substantially prevent the material from contacting the surface, wherein: the material is sorted into two or more groups, one of the two or more groups comprising desired product having a color; the colored wear tile has a color that permeates substantially an entire mass of the colored wear tile, the color of the colored wear tile being different from the color of the desired product; the colored wear tile, or portions or pieces thereof, that may mix with the material is separated from the desired product by the apparatus on the basis of a difference between the color of the colored wear tile and the color of the desired product, and the colored wear tile is produced by firing a composition at or above about 2500° F. from about 45 minutes to about 90 minutes, the composition being selected from the group consisting of, i. Composition A comprising prior to firing, ii. Composition B comprising prior to firing, iii. Composition C comprising prior to firing, iv. Composition D comprising prior to firing, v. Composition E comprising prior to firing,