摘要:
Method and apparatus for transforming organic and inorganic solid urban waste into aggregates, comprising an extruding machine connected to a reactor. The extruding machine is formed by an extrusion cylinder through which a piston circulates inside an extrusion cavity, which comprises three sections and is fed with a parget obtained after pre-processing the waste. The end of the third section is connected to the reactor through an opening. The reactors longitudinal shaft is formed by a rotatory steel shaft in which some steel blades are arranged, whose ends play the roles of cutting, hammering, punching and hydraulic helix as they rotate. Between the end of the blades and the wall of the reactor, there is a clearance of more than 0.1 mm of thickness. The reactor has a discharge valve to discharge the parget present in the boundary area through some openings, once it has been processed by a series of pressure, vibration energy and decompression cycles.
摘要:
Various building materials constructed from different recycled components are provided. Such materials include boards, bricks, and the like, and exhibit differing levels of tensile strength, heat resistance, and other physical and chemical properties. The capability of introducing varied collected items, including paper, paperboard, clothing fibers, wood chips and strips, raffia bags, used engine oil, etc., and produce a resilient and dimensionally stable building material is presented herein. Replacement of timber and concrete is permitted with such a new material based upon renewable resources. The method of production and use of such materials is encompassed herein as well.
摘要:
Systems and methods of the present invention include a method for the treatment of drilling wastes and coal combustion residues, comprising combining at least a first drilling waste with coal combustion residues to form a paste, combining at least a second drilling waste with coal combustion residues to form a compactable fill, and placing the paste and the compactable fill in a landfill. Other embodiments include a method of treating drilling wastes and coal combustion residues, comprising combining at least one drilling waste with a coal combustion residue to form a paste. Further embodiments include containing the paste within at least one geotextile container. Still further embodiments include placing the geotextile container in a landfill.
摘要:
A concrete mortar is formed by mixing together sand, cement, water and a sewage sludge ash. A foam is added to the mortar to form a foamed concrete composition.
摘要:
A method is shown for producing a lightweight aggregate by treating flyash and sewage sludge. The flyash and sewage sludge are mixed together and then agglomerated into pellets, with or without the use of a binder. The pellets may be coated and then are dried. The dried pellets are introduced into a rotary kiln in a direction that is co-current with the flow of fuel and air through the kiln. The pellets in the kiln will be indurated and will experience complete calcination as well as varying degrees of pyrolizing and sintering. The product of the kiln is a nodular material having a low density but with a hard and porous structure. The product of the kiln is feed to a cooler. The flyash sewage sludge mixture has a significant fuel value that is usable in the kiln. Furthermore, the fuel valve available in the kiln off-gases may be used for drying the materials.
摘要:
A method of solidifying noxious wastes contaminated with toxic substances possibly affecting an environmental ecological system, using a cement-type solidifying agent and lipid added and admixed into the noxious wastes, to cause solidification thereof and at the same time fixation of the toxic contaminants, both organic and inorganic, as contained therein.
摘要:
Process for the production of pressed bodies from municipal refuse or waste, especially refuse having a content of wood-based materials, plaster and animal and vegetable substances, in which the refuse is subjected to a treatment for reducing particle size as well as for the separation of metals and similar hard, inorganic fractions. After collection, the refuse is divided up without the addition of fluid and is thereafter dried in a hot gas to reduce the water content. The particles of refuse material are screened in an air stream to separate heavy fractions and thereafter are pressed to pressed bodies during the addition of an adhesive and/or binding agent.
摘要:
The heavy metal content of sludge waste is fixed in a cementitious solid product by mixing the waste sludge with fixing ingredients comprising vermiculite and cement.
摘要:
Treating plastic particles for use in concrete includes combining plastic particles with oil to yield a mixture, heating the mixture to yield a heated mixture, cooling the heated mixture to yield a cooled mixture, and removing excess oil from the cooled mixture to yield oil-treated plastic particles (e.g., oil-treated plastic particles for concrete). In one example, the oil is vegetable oil. The vegetable oil can be soybean oil, corn oil, canola oil, safflower oil, peanut oil, olive oil, grape seed oil, cocoa butter, palm oil, rice bran oil, or a combination thereof. The oil can be waste oil (e.g., waste vegetable oil, such as that recovered from restaurants). The plastic particles can be derived from post-consumer plastic, such as recycled plastic. In one example, the post-consumer plastic includes mixed plastics. A concrete composition can include rocks, sand, cement, and the oil-treated plastic particles.
摘要:
A method for preparing ceramsite by using municipal sludge as raw material, including the following specific steps: drying; preparing ingredients including raw sludge, fly ash, kaolinite, steelmaking slag, zeolite, hematite, calcareous shale, waste incineration fly ash, Fe2O3, waste glass, calcium carbonate, sodium lauryl sulfate, and sodium benzoate; mixing and stirring uniformly, and putting the stirred materials into a granulating machine for granulation; drying and preheating the material pellets after granulation, and then quickly transferring to a sintering device for first sintering at a low temperature and then sintering at a high temperature; crushing large chunks of the cooled materials; and separating and screening the crushed materials. The method of the present invention reduces the generation of the large chunks of the cooled materials in the obtained ceramsite, thereby reducing the subsequent crushing work and saving energy consumption accordingly.