Abstract: A material feeding apparatus and method for providing a controlled feed of material. In particular, there is described a material feeding control apparatus and method comprising a feed rate measurement device capable of providing an online mass and/or volume flow measurement of material and a material sensing device capable of providing an online content (e.g. composition) measurement of the material. The material being fed may, for example, be any suitable bulk material including fuel for a combustion chamber (e.g. a furnace), mined materials such as iron ore and food in a food feeding system. A particular example of the present invention is the provision of a fuel feeding apparatus capable of providing substantially stable combustion in a combustion chamber (e.g. a furnace) which may be incorporated into a cement production line.

Abstract: A split door assembly for a grinding mill includes an upper door assembly with an upper door exterior surface. The upper door exterior surface supports a journal actuator assembly and the upper door assembly is pivotal with a journal that has a grinding roller mounted thereon. The split door assembly includes a lower door positioned below the upper door assembly. A hinge assembly pivotally connects the upper door assembly and the lower door. The upper door assembly and the lower door are pivotable together between a closed position and an open position. When in the closed position, the upper door assembly abuts the lower door. When in the open position, the upper door assembly is pivoted away from the grinding mill, the lower door is pivoted away from the grinding mill and the lower door is pivoted relative to the upper door assembly.

Abstract: A split door assembly for a grinding mill includes an upper door assembly with an upper door exterior surface. The upper door exterior surface supports a journal actuator assembly and the upper door assembly is pivotal with a journal that has a grinding roller mounted thereon. The split door assembly includes a lower door positioned below the upper door assembly. A hinge assembly pivotally connects the upper door assembly and the lower door. The upper door assembly and the lower door are pivotable together between a closed position and an open position. When in the closed position, the upper door assembly abuts the lower door. When in the open position, the upper door assembly is pivoted away from the grinding mill, the lower door is pivoted away from the grinding mill and the lower door is pivoted relative to the upper door assembly.