Abstract: A grinding mill comprising a mill cylinder, a vertically mounted main shaft coupled at the lower end to a motor mounted on the lower side of the mill cylinder to be driven thereby and extending along the axis of the mill cylinder, and means mounted in descending order on the main shaft including a finished product conveying means, a classifying means, a grinding roller means and a decelerating means, a fixed sleeve fixed on the bottom of the mill cylinder to support a rotary bushing by means of bearings, a circular seat portion and a support seat fixed to the upper end of the rotary bushing, wherein the support seat is fixed with a grinding ring, a plurality of grinding rollers are rotatably provided inward of the grinding ring, a clearance is formed between the grinding ring and the grinding rollers, wherein a plurality of radially extended sweeping sheets are provided outside of the circular seat portion for sweeping the material fallen upon it away from the mill, and wherein an air inlet duct is provided a

Abstract: The present invention provides an incinerator capable of completely burning pulverized coal or oil and waste products. The main feature of this invention resides in that a heavy oil or a pulverized coal can be mixed with a primary air flow and injected into the burning furnace so as to introduce a rapidly revolving secondary air flow from tangential air flow inlets on an inner pipe to help combustion and thus completely burn waste products which are sent into the incinerator through a preheating chamber. Tangential air inlets and a radiating whirling sheets are provided on the inner pipe of the incinerator so as to enable a primary air flow and a secondary air flow in the incinerator to continuously revolve the waste products and thus lengthen the time duration of combustion.

Abstract: A centrifugal grinding mill of the ring-roller type incorporating a decelerating means, a grinding roller means, a classifying means and a finished product conveying means, which means are driven by a single shaft driven by a single motor, is suitable for grinding soft, hard and solid (ores), viscous, and fibrous raw materials to desired fineness. The distance between grinding ring and rollers is adjustable. Under the grinding roller means there is provided a means for removing waste materials. By means of the guiding of an air stream in cooperation with the classifying means the separate vanes of which can be selectively changed in number, it is possible to obtain finished particles ranging in size from several ten to more than ten thousand mesh (U.S. standard mesh).

Abstract: The present invention relates to a high speed burning furnace and incinerator, particularly to a high speed burning furnace and incinerator capable of completely burning pulverized coal in the burning furnace, separating the ash produced by the combustion, injecting the said flame into the incinerator, and then completely burning the waste products. The main feature of this invention resides in that a heavy oil or a pulverized coal can be mixed with a primary air flow and injected into the burning furnace so as to introduce a rapidly revolving secondary air flow from tangential air flow inlets on an inner pipe to help combustion and thus a complete combustion can be effected and the flame can be intensified. This intense flame is introduced into the incinerator to completely burn the waste products sent into the incinerator by a conveyer through a preheating chamber.