An illustrated view of an exemplary cardboard shredder for compressing and shredding cardboard is presented. The cardboard shredder provides a shredder for cardboard to facilitate recycling while reducing storage space needed before cardboard enters a recycling stream and cutting out the middleman, thus the recycler receives uncontaminated cardboard since it is not mixed in with other materials. The manufacturer receives clean shredded cardboard for reuse, reducing headcount for the plant by reducing and eliminating their shredders being jammed with plastic. The cardboard shredder further saves space in residential and commercial spaces and increases intervals between container emptying, thus making recycling of cardboard easier while saving time and money. The carboard shredder is designed to fit over standing large garbage cans to eliminate double handling of the cardboard prior to recycling. The cardboard shredder further accommodates larger sizes of product to be shredded than a conventional paper shredder encouraging recycling of cardboard.

Disclosed herein are systems and methods for processing waste egg shells into (i) a first product comprising calcified egg shell particles having diameters of 3μ or less, and (ii) a second product comprising calcified egg shell particles having diameters in a range from about 3μ to about 7μ. The first product may be used as a CaCO.sub.3 substitute for paint compositions and plastics compositions. The second product may be used as a CaCO.sub.3 blasting media substitute for use with abrasive blasting equipment.

An apparatus for the separate collection of rubbish includes a containing structure provided with an internal compartment in which there are a plurality of rubbish collection containers and at least a first and a second aperture for access to the internal compartment from the outside, in order to introduce the rubbish.

An environment-friendly construction waste treatment equipment for civil engineering is provided, including a main frame, a wringing frame, first fixing columns, a second fixing column, an electric motor, etc. wherein the first fixing column is provided on each of front and rear sides of a left side of an upper portion of the main frame, the wringing frame is provided between the first fixing columns, the second fixing column is provided on rear and left sides of the upper portion of the main frame, and the electric motor is provided on the second fixing column. The electric motor is turned on, the wringing wheels wring the construction waste, the wringed construction waste falls onto the conveying belt, and then is transferred to the filtering plate via the conveying belt. In this way, as the construction waste is conveyed via the conveying belt, the equipment is prevented from being blocked.

Aspects of the present disclosure include devices, systems, methods, and control systems for processing waste into usable products, such as fuel stock, soil additives, and usable byproducts. Various system components may include: 1) a material loading area; 2) a pre-shredder; 3) a magnet based separator; 4) an eddy current separator; 5) additional sorting devices, such as a ballistic separator and/or an optical separator; 6) a mechanical pulverizer, such as a vertical shaft impactor (VSI); 7) a moisture separation device, such as a cyclone; 8) a compressor, such as a ram baler; 9) a packager, such as a bale wrapper; 10) analyzers, such as for moisture and caloric data analysis; 11) a thermal pressure chamber, such as a thermal screw; and 12) a control system to control operation of the system.

An aggregate production method includes procuring stone waste by-products, sorting the stone waste by-products by type and color, and subjecting the sorted stone waste by-products to a two-stage crushing process to produce aggregate. The aggregate is screened into different sizes and placed according to size into a bag or container.

A shredder dust treatment method is provided wherein non-metal dust which is further pulverized into a small particle size in a pulverizing step S10 through a crushing step S1 of crushing wastes such as waste automobiles, waste home appliances, and waste office furniture into a predetermined size, an iron component separation and collection step S3 of separating and collecting an iron component, a non-ferrous component separation and collection step S4 of separating and collecting a non-ferrous component, a metal component separation and collection step S5 of sorting a metal component, wind power sorting steps S2, S6, S8, and S9 of sorting floating fibrous dust and a settled crushed material by wind power, and a shredding step S7 of shredding the settled crushed material into a predetermined size is separated into metal scraps such as copper, aluminum, and iron, fibrous dust, and particulate dust in a separating step S11.

Disclosed herein are systems and methods for processing waste egg shells into (i) a first product including calcified egg shell particles having diameters of 3μ or less, and (ii) a second product including calcified egg shell particles having diameters in a range from about 3μ to about 7μ. The first product may be used as a CaCO.sub.3 substitute for paint compositions and plastics compositions. The second product may be used as a CaCO.sub.3 blasting media substitute for use with abrasive blasting equipment.

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; a fixed grinding plate disposed at the bottom end of the hopper and including grinding elements for grinding and liquefying organic waste; an agitator that is disposed within the hopper and is movable relative to the grinding plate in a first rotational direction that moves organic waste downward toward and against the grinding plate and in a second rotational direction that moves organic waste upward toward a top end of the hopper; a motor configured to selectively move the agitator in the first and second rotational directions under control of the controller; and an outlet through the bottom end of the hopper through which liquified organic waste drains from the hopper.

A shredder device for shredding materials, in particular recyclable material, waste wood and date storage devices, comprises a machine frame, at least one shredder rotor rotatably supported on the machine frame, and at least one feed device for conveying the material to be shredded to the at least one shredder rotor. At least one measuring device for continuously detecting a position of the at least one feed device, a control and/or regulating device for controlling and/or regulating a movement of the at least one feed device, and a signal transmitting device are provided. Measuring signals generated by the at least one measuring device can be supplied to the control and/or regulating device by the signal transmitting device.