Disclosed herein are methods and apparatus for producing nanometer scale particles utilizing an electrosterically stabilized slurry in a media mill. A method for producing nanometer scale particles includes adding to a media mill a feed substrate suspension. The feed substrate suspension includes a liquid carrier medium and feed substrate particles. The method further includes adding to the feed substrate suspension in the media mill an electrosteric dispersant. The electrosteric dispersant includes a polyelectrolyte. Still further, the method includes operating the media mill for a period of time to comminute the feed substrate particles, thereby forming nanometer scale particles having a (D.sub.90) particle size of less than about one micron, and recirculating for further grinding the nanometer scale particles from the media mill.

This invention relates to manufacturing briquettes, pellets and shapes from recycled asphaltic limestone powder derived from waste residential roofing products. Briquettes and pellets are manufactured through a densification process at varying temperatures, creating recycled asphalt pellets, asphalt limestone pellets and bio mass and coal fines briquettes. Various shapes, including curbs and posts, are manufactured through heat and pressure in molds. Seawalls, walkways and wall panels are manufactured by blending asphaltic limestone powders with polymer resins and extruded or pultruded into shapes.

A method and system for coal ash reclamation from a land fill, the system comprising: a harvester; a screen for screening non-ash material from ash collected by the harvester; a dryer for drying raw ash thereby creating dried coal ash and fine particulate ash; an exhaust pipe to direct the ash to a dust collector; a crusher for crushing the dried ash; a classifier for classifying the crushed dried ash; and a storage container for storage. The method comprising: harvesting raw coal ash from a land fill; screening the raw coal ash to remove oversize materials; drying the screened ash to remove water; crushing the stream of dried ash; classifying the crushed ash into fine particulate ash and large particulate ash, the second stream being directed for further crushing; streams of fine particulate ash being cooled; and storing the fine particulate ash.

A fertilizer grinding mechanism, a water and fertilizer mixing device, and an aqueous fertilizer solution preparation production line. A fertilizer receiving body, where an edge is provided with a arranged first channel; a connecting body, fixed to a bottom of the fertilizer receiving body and provided with a second channel with the first channel, a bottom of the second channel is communicated with a buffer bin, a pushing block is arranged in the buffer bin, and the pushing block is connected with a drive mechanism for driving the block to move in direction of the body; and an inner grinding block, where the block is fixed to a bottom of the connecting body, an outer side of the inner grinding block is with a vertically movable grinding roller, the pushing block can push fertilizer under vertical movement of the roller. The grinding mechanism has a heat dissipation effect.

A fertilizer grinding mechanism, a water and fertilizer mixing device, and an aqueous fertilizer solution preparation production line. A fertilizer receiving body, where an edge is provided with a arranged first channel; a connecting body, fixed to a bottom of the fertilizer receiving body and provided with a second channel with the first channel, a bottom of the second channel is communicated with a buffer bin, a pushing block is arranged in the buffer bin, and the pushing block is connected with a drive mechanism for driving the block to move in direction of the body; and an inner grinding block, where the block is fixed to a bottom of the connecting body, an outer side of the inner grinding block is with a vertically movable grinding roller, the pushing block can push fertilizer under vertical movement of the roller. The grinding mechanism has a heat dissipation effect.

A liquification system for an organic waste management system includes a hopper that is oriented vertically such that organic waste added to the hopper is biased by gravity toward a bottom end of the hopper; an agitator that is disposed within the hopper and is movable in a first rotational direction that moves organic waste downward and in a second rotational direction that moves organic waste upward; a motor configured to selectively move the agitator in the first and second rotational directions under control of the controller; and a side grinding and drainage system disposed toward the bottom end of the hopper and preferably on a tapered portion of the hopper for grinding and liquefying organic waste.

A jet milling apparatus comprises a milling chamber having one inlet for a product to be milled and outlets for a milled end product having physical properties with respective values falling inside respective ranges, nozzles for issuing respective jets of a milling fluid having predetermined operative parameters into said milling chamber for intercepting the product to be milled and forming a fluidized material inside for drying, selecting, milling, sterilizing, clustering the product, electromagnetic field emitters designed to generate an electromagnetic field with predetermined frequencies and to orient it inside said milling chamber, monitoring devices placed at the outlets for controlling in real time the physical properties of the milled end product before exit and designed to drive the nozzles and the electromagnetic field emitters to vary and adjust the operative parameters of the jets of the milling fluid and the frequency of the electromagnetic field.

A method of dust suppression for crushers (2) with spraying devices (3) is described. To facilitate a resource-sparing dust suppression independently of the operator and even in the case of heterogeneous bulk material, the deviation between an image representation recorded by a first sensor (4) of a pattern arranged in its detection region as an actual value and a specified target value is determined, whereupon the spraying devices (3) assigned to the pattern are activated if the deviation exceeds a specified threshold.

A method of dust suppression for crushers (2) with spraying devices (3) is described. To facilitate a resource-sparing dust suppression independently of the operator and even in the case of heterogeneous bulk material, the deviation between an image representation recorded by a first sensor (4) of a pattern arranged in its detection region as an actual value and a specified target value is determined, whereupon the spraying devices (3) assigned to the pattern are activated if the deviation exceeds a specified threshold.

A method for grinding a solid in a vertical roller mill (VRM), comprising grinding at least one solid in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula (I): The definitions of variables R.sup.1, R.sup.2, and R.sup.3 are provided herein. ##STR00001##