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Class Information
Number: 241/24.24
Name: Solid material comminution or disintegration > Processes > With classifying or separating of material > Of plural, diverse materials > Including coal
Description: Process of comminuting and separating including sorting out a component comprised of hard, carbonaceous earthen material.

Patents under this class:

Patent Number Title Of Patent Date Issued
8662426 Method for processing brown coal Mar. 4, 2014
8662427 Method and process for providing a controlled batch of micrometer-sized or nanometer-sized coal material Mar. 4, 2014
8651032 Classification device, vertical pulverizing apparatus using the same, and coal fired boiler apparatus Feb. 18, 2014
8517290 Installation and process for the milling-drying and storage of brown coal Aug. 27, 2013
8440298 Method for dry grinding a material containing a carbonate ore May. 14, 2013
8348184 Waterless separation methods and systems for coal and minerals Jan. 8, 2013
8157193 Waterless separation methods and systems for coal and minerals Apr. 17, 2012
7124968 Method and apparatus for separating material Oct. 24, 2006
5936216 Froth floatation process for separating carbon from coal ash Aug. 10, 1999
5127586 Method of magnetic separation and apparatus therefore Jul. 7, 1992
4775106 Use of smelter-grade sulfuric acid as true heavy-liquid media in coal cleaning Oct. 4, 1988
4586660 Process for separating anthracite coal from impurities May. 6, 1986
4575011 Reducing ash content of lignite Mar. 11, 1986
4415335 Coal preparation Nov. 15, 1983
4389019 Method of and apparatus for the dry separation of pyrite from coal Jun. 21, 1983
4268271 Reduction of the fouling potential of high sodium coal May. 19, 1981
4260394 Process for reducing the sulfur content of coal Apr. 7, 1981
4252638 Method for the desulfurization of coal Feb. 24, 1981
4244530 Integrated coal cleaning and slurry preparation process Jan. 13, 1981
4132365 Process for preparing a stable slurry of coal Jan. 2, 1979
4113187 Method and apparatus for drying and grinding Sep. 12, 1978
4081251 Process to remove iron sulfide from coal to reduce pollution Mar. 28, 1978
3999958 Coal beneficiation Dec. 28, 1976

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