Method and apparatus (100) 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 (103) through which a piston circulates (104) inside an extrusion cavity (106), which comprises three sections (107, 110, 111) and is fed with a parget obtained after pre-processing the waste. The end (115) of the third section (111) is connected to the reactor (112) through an opening (114). The reactor's longitudinal shaft is formed by a rotatory steel shaft (116) in which some steel blades are arranged (108), 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 (300) to discharge the parget present in the boundary area through some openings (304), once it has been processed by a series of pressure, vibration energy and decompression cycles.

The invention: a procedure to manufacture recycled waste concrete, and the recycled waste concrete itself, which is produced through a simple processing of various types of waste and is suitable for serving as a material to manufacture concrete products widely used in the construction industry, where such products include road bases, strip foundations, bases of houses, noise barriers, traffic barriers for highways/roads, lane separators, sandwich panels, to fill formwork and even, depending on the type of waste used, to build walls. The recycled waste concrete contains cement, water and shredded waste aggregates, such as shredded tyres and/or any shredded plastic waste, and/or any shredded scrap metal, and/or any shredded garden waste, and/or shredded mixed waste, and/or shredded fibre waste, and/or any shredded glass waste, and/or shredded and effectively neutralised municipal waste. As organic binding agent it contains homo-, co- and terpolymers, which can be dissolved and/or dispersed in water and do not contain or produce environmentally hazardous, volatile, organic hydrocarbons, and such polymers are made, for instance, by using vinyl chloride, vinyl esters of saturated, unsaturated and aromatic organic acids, vinyl butyral, ethylene, esters of acrylic acid, styrene, alkyl isocyanates, silanes and siloxanes, which may contain polyvinyl alcohols and/or cellulose ethers and/or other protective colloids. The invention is characterised by being produced by simply mixing the ingredients in the proportions given as listed below: 20-50 volume percent cement, 0.3-10 volume percent organic polymer binding agent, 8-30 volume percent water, and 50-100 volume percent shredded waste aggregate.

The invention: a procedure to manufacture recycled waste concrete, and the recycled waste concrete itself, which is produced through a simple processing of various types of waste and is suitable for serving as a material to manufacture concrete products widely used in the construction industry, where such products include road bases, strip foundations, bases of houses, noise barriers, traffic barriers for highways/roads, lane separators, sandwich panels, to fill formwork and even, depending on the type of waste used, to build walls. The recycled waste concrete contains cement, water and shredded waste aggregates, such as shredded tyres and/or any shredded plastic waste, and/or any shredded scrap metal, and/or any shredded garden waste, and/or shredded mixed waste, and/or shredded fibre waste, and/or any shredded glass waste, and/or shredded and effectively neutralised municipal waste. As organic binding agent it contains homo-, co- and terpolymers, which can be dissolved and/or dispersed in water and do not contain or produce environmentally hazardous, volatile, organic hydrocarbons, and such polymers are made, for instance, by using vinyl chloride, vinyl esters of saturated, unsaturated and aromatic organic acids, vinyl butyral, ethylene, esters of acrylic acid, styrene, alkyl isocyanates, silanes and siloxanes, which may contain polyvinyl alcohols and/or cellulose ethers and/or other protective colloids. The invention is characterised by being produced by simply mixing the ingredients in the proportions given as listed below: 20-50 volume percent cement, 0.3-10 volume percent organic polymer binding agent, 8-30 volume percent water, and 50-100 volume percent shredded waste aggregate.

Apparatus and method in converting municipal solid waste into geo-polymer briquettes and geo-polymer bricks comprising bag opener cum crushers, magnetic separators for ferrous and-eddy current separators for non-ferrous things; squeezer for removing liquid content; inter particle collision driers for drying; pulverizer for pulverizing, and devolatizing carbonization reactor for carbonisation of combustible MSW to produce solid char with low water content. Solid char is mixed with geo-polymer binding agent/starch/tar/to form combustible pellet/briquette. These highly combustible briquette/pellets have high calorific value. The pellet/briquette is formed by rotating combustible char at high rpm and compaction. Pellet has a water content of less than 5% by weight and fuel value of 5500 to 6500 KCAL. This process produces non-combustible geo-polymer brick. The non-combustible MSW separated by a trommel is crushed by inter particle collision crusher and pan mixers mixing with geo-polymer binding agent/fly ash/quarry dust/chips or china clay and moulded.

Apparatus and method in converting municipal solid waste into geo-polymer briquettes and geo-polymer bricks comprising bag opener cum crushers, magnetic separators for ferrous and-eddy current separators for non-ferrous things; squeezer for removing liquid content; inter particle collision driers for drying; pulverizer for pulverizing, and devolatizing carbonization reactor for carbonisation of combustible MSW to produce solid char with low water content. Solid char is mixed with geo-polymer binding agent/starch/tar/to form combustible pellet/briquette. These highly combustible briquette/pellets have high calorific value. The pellet/briquette is formed by rotating combustible char at high rpm and compaction. Pellet has a water content of less than 5% by weight and fuel value of 5500 to 6500 KCAL. This process produces non-combustible geo-polymer brick. The non-combustible MSW separated by a trommel is crushed by inter particle collision crusher and pan mixers mixing with geo-polymer binding agent/fly ash/quarry dust/chips or china clay and moulded.

Base grains intended to be assembled together to form granules for a composition of construction materials useful in the field of building, public works and civil engineering, characterised in that each base grain consists of a core formed by an agglomerate of fragments of compressed waste and associated with each other by a micro-concrete with a carbonated hydraulic binder which has undergone hydraulic setting, the core being enclosed in a shell formed by a reactive powder micro-concrete (RPMC) which has undergone hydraulic setting.

Systems and method are provided for a low carbon light weight aggregate made from disk pelletizing biochar; binder; supplementary cementitious material (SCM); fine aggregates; and water.

A system and method for preparing sulphoaluminate cement from solar energy stored heat dried sludge. Solar concentrator connected to high-temperature molten salt storage tank, superheater, preheating-evaporator and low-temperature molten salt storage tank to form mixed molten salt heat transfer-heat storage circulation system; superheated steam in superheater enters ultra-disc dryer, and ultra-disc dryer connected to water storage tank and preheating-evaporator superheater to form water heat transfer circulation system; wet sludge bin connected to ultra-disc dryer and inlet of dried sludge bin, and dried sludge conveyed to dried sludge bin for storage; and cement production system separately connected with waste gas outlet of ultra-disc dryer and outlet of dried sludge bin. System can use valley electricity to supplement heat at any specific time, and coupled with cement kiln; waste gas introduced into cement kiln for waste burning; dried sludge mixed with other solid waste to enter cement kiln to prepare sulphoaluminate cement.