A system (1), and method for cleaning sand, which system (1) is a modular system and comprising at least a cleaning module (2). The cleaning module (2) comprising a cleaning apparatus (22) comprising an oven (5), and a cooling drum (6). The system (1) is configured to thermally clean the sand in the heated oven (5), remove gases and fine fraction from the thermally cleaned sand, cool the thermally cleaned sand in the cooling drum (6), and remove gases and fine fraction from the cooling drum (6).
B08B 7/00 - Cleaning by methods not provided for in a single other subclass or a single group in this subclass
B08B 15/00 - Preventing escape of dirt or fumes from the area where they are producedCollecting or removing dirt or fumes from that area
B08B 7/02 - Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
B08B 13/00 - Accessories or details of general applicability for machines or apparatus for cleaning
B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
In the disclosed solution, a method is described for producing sand used in industry, in which method dis-carded power plant and/or foundry sand is processed into sand for use in products of the construction industry and/or into foundry sand by means of pre-treatment, drying, and after-treatment. In addition, an apparatus is described for producing sand used in industry, and use of discarded power plant and/or foundry sand in products of the construction materials industry or in foundry industry.
B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
B22C 5/04 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
B22C 5/06 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
3.
METHOD AND ARRANGEMENT FOR REGENERATING SAND TO BE CLEANED
A method for processing sand to be cleaned, the method comprising regenerating (201) sand to be cleaned, monitoring (202) visually quality of the regenerated sand by a quality monitoring system (100), and directing, based on the monitored quality of the regenerated sand, the regenerated sand forward (203) to a further treatment process or back (204) to be regenerated (201) again. An arrangement for regenerating sand to be cleaned, wherein the arrangement comprises a regeneration system (1) for regenerating sand to be cleaned, a quality monitoring system (100) for visually monitoring quality of the regenerated sand, and a flow switch device (140) for directing, based on the monitored quality of the regenerated sand, the regenerated sand forward (141) to a further treatment process or back (142) to the regeneration system (1).
B22C 5/08 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
F27B 7/02 - Rotary-drum furnaces, i.e. horizontal or slightly inclined of multiple-chamber or multiple-drum type
B22C 5/14 - Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material
A method for a reclamation of waste sand comprising bentonite binder, in which method it is subjected a thermal treatment to the waste sand for removing carbon and absorbed moisture from the bentonite binder in the waste sand, it is subjected a mechanical treatment to the thermally treated waste sand for mechanically separating the sand from the bentonite binder, and it is subjected a cooling effect to the sand separated from the bentonite binder. Additionally, it is introduced an apparatus for a reclamation of waste sand comprising bentonite binder, sand for a building industry product, a foundry sand, or a power plant boiler sand, and a use of reclaimed sand in a building industry product, in a foundry sand, or in a power plant boiler sand.
B09B 3/30 - Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
B02C 19/00 - Other disintegrating devices or methods
B22C 5/00 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
F27B 7/00 - Rotary-drum furnaces, i.e. horizontal or slightly inclined
F27B 7/02 - Rotary-drum furnaces, i.e. horizontal or slightly inclined of multiple-chamber or multiple-drum type
F27B 7/18 - Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being movable within the drum
5.
POWER PLANT BOILER SAND, USE OF POWER PLANT BOILER SAND, METHOD FOR PRODUCING POWER PLANT BOILER SAND AND APPARATUS FOR PRODUCING POWER PLANT BOILER SAND
Power plant boiler sand comprising a clay-based binder film (3) on the surface of a grain of sand (2). In addition, a method and apparatus for producing power plant boiler sand.
B07B 13/04 - Grading or sorting solid materials by dry methods, not otherwise provided forSorting articles otherwise than by indirectly controlled devices according to size
B07B 1/00 - Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
B07B 4/00 - Separating solids from solids by subjecting their mixture to gas currents
B09B 3/30 - Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
A system (1), and method for cleaning sand, which system (1) is a modular system and comprising at least a cleaning module (2). The cleaning module (2) comprising a cleaning apparatus (22) comprising an oven (5), and a cooling drum (6). The system (1) is configured to thermally clean the sand in the heated oven (5), remove gases and fine fraction from the thermally cleaned sand, cool the thermally cleaned sand in the cooling drum (6), and remove gases and fine fraction from the cooling drum (6).
In the solution set forth, a material mixture for a surface to be coated is described, the material mixture comprising 80 to 99.9 % of aggregate and 0.1 to 20 % of microfiber cellulose as calculated from the weight of the solid matter in the material mixture. In addition, a method is described for coating a surface to be coated with a material mixture which comprises 64 to 98.8 % of aggregate, 0.08 to 19.8 % of microfiber cellulose, and 1 to 20 % of water as calculated from the total weight of the material mixture.
C04B 20/00 - Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups and characterised by shape or grain distributionTreatment of materials according to more than one of the groups specially adapted to enhance their filling properties in mortars, concrete or artificial stoneExpanding or defibrillating materials
C04B 18/14 - Waste materialsRefuse from metallurgical processes
C04B 26/28 - Polysaccharides or derivatives thereof
C04B 30/02 - Compositions for artificial stone, not containing binders containing fibrous materials
C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
In the disclosed solution, a method is described for producing sand used in industry, in which method dis- carded power plant and/or foundry sand is processed into sand for use in products of the construction industry and/or into foundry sand by means of pre-treatment, drying, and after-treatment. In addition, an apparatus is described for producing sand used in industry, and use of discarded power plant and/or foundry sand in products of the construction materials industry or in foundry industry.
An apparatus and a method for cleaning sand used at a foundry, wherein sand to be cleaned is screened by a screening apparatus. The screened sand and at least one liquid mixture is fed into an abrasive apparatus. After that, the screened sand is rubbed by the abrasive apparatus. The rubbed sand and at least one liquid mixture is added to a water separation screen for separating a water blend from the rubbed sand. Finally, the separated sand is transferred into an oven and cleaned thermally by rotating the separated sand in the heated oven.
B22C 5/10 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by dust separating
B22C 5/06 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
B22C 5/08 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
POWER PLANT BOILER SAND, USE OF POWER PLANT BOILER SAND, METHOD FOR PRODUCING POWER PLANT BOILER SAND AND APPARATUS FOR PRODUCING POWER PLANT BOILER SAND
Power plant boiler sand comprising a clay-based binder film (3) on the surface of a grain of sand (2). In addition, a method and apparatus for producing power plant boiler sand.
B22C 1/18 - Compositions of refractory mould or core materialsGrain structures thereofChemical or physical features in the formation or manufacture of moulds characterised by the use of binding agentsMixtures of binding agents of inorganic agents
In the disclosed solution sand to be cleaned is thermally cleaned by rotating the sand being cleaned in a large oven (1) by rotating the oven (1). Before cleaning, the sand may be pre-processed by crushing any lumps and cleaning the sand fraction by magnetic separation. Preprocessed sand to be cleaned and heat energy are fed (5) into the rotating oven. The oven (1) is set slightly inclined so that a second end of the oven (1) is lower than a first end. The inclination and rotating speed of the oven (1) as well as the feed amount of sand are adjusted, whereby the advancing speed of the sand may be adjusted, as well as the ratio of the sand being cleaned to the volume of the oven (1) kept as desired. The temperature of the oven (1) is monitored at the coldest area of the oven, which is substantially at the second end of the oven. The temperature of the oven (1) is adjusted by adjusting the amount of heat energy fed in. By means of temperature monitoring and knowing the advancing speed of the sand, it is also possible to determine the average temperature of the sand and adjust it as desired by adjusting the supplied heat energy. Finally, the cleaned sand is let run (12) from the second end of the oven (1).
F27B 7/36 - Arrangements of air or gas supply devices
B03C 1/30 - Combinations with other devices, not otherwise provided for
B08B 7/00 - Cleaning by methods not provided for in a single other subclass or a single group in this subclass
B08B 7/04 - Cleaning by methods not provided for in a single other subclass or a single group in this subclass by a combination of operations
B22C 5/04 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
B22C 5/06 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
F23G 5/08 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including supplementary heating
F27B 7/12 - Rotary-drum furnaces, i.e. horizontal or slightly inclined tiltable
F27B 7/20 - Details, accessories or equipment specially adapted for rotary-drum furnaces
F27B 7/42 - Arrangement of controlling, monitoring, alarm or like devices
B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
In the disclosed solution sand to be cleaned is thermally cleaned by rotating the sand being cleaned in a large oven (1) by rotating the oven (1). Before cleaning, the sand may be pre-processed by crushing any lumps and cleaning the sand fraction by magnetic separation. Preprocessed sand to be cleaned and heat energy are fed (5) into the rotating oven. The oven (1) is set slightly inclined so that a second end of the oven (1) is lower than a first end. The inclination and rotating speed of the oven (1) as well as the feed amount of sand are adjusted, whereby the advancing speed of the sand may be adjusted, as well as the ratio of the sand being cleaned to the volume of the oven (1) kept as desired. The temperature of the oven (1) is monitored at the coldest area of the oven, which is substantially at the second end of the oven. The temperature of the oven (1) is adjusted by adjusting the amount of heat energy fed in. By means of temperature monitoring and knowing the advancing speed of the sand, it is also possible to determine the average temperature of the sand and adjust it as desired by adjusting the supplied heat energy. Finally, the cleaned sand is let run (12) from the second end of the oven (1).
F27B 7/12 - Rotary-drum furnaces, i.e. horizontal or slightly inclined tiltable
F27B 7/42 - Arrangement of controlling, monitoring, alarm or like devices
F27B 7/36 - Arrangements of air or gas supply devices
B22C 5/00 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
B22C 5/04 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
B22C 5/06 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
F23G 5/08 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including supplementary heating
patents
