[Problem] To provide a manufacturing plant and an apparatus for grinding recycled aggregate in which abrasive grains are caused to uniformly collide with the entirety of a starting material. [Solution] The apparatus is provided with a blast rotor (20) for discharging abrasive grains (B) using rotation-induced centrifugal force, and a rotating sorter (30) for rotatably accommodating the blast rotor (20). The abrasive grains (B) are discharged from the blast rotor (20) toward a starting material (A) held in the rotating sorter (30) so as to shot-blast the granular starting material.
B24C 9/00 - Accessoires des machines ou dispositifs de traitement au jet abrasif, p. ex. enceintes de travail, dispositions pour la manutention des abrasifs usés
2.
ORE GRINDING DEVICE AND METHOD FOR PRODUCING RECYCLED AGGREGATE
Deposits such as mortar are efficiently removed while preventing over crushing of recycled aggregate. A method for producing recycled aggregate, which includes a step for crushing waste concrete, a sorting step for sorting the crushed materials to extract the recycled aggregate, and an ore-grinding step for ore-grinding the extracted crushed aggregate to remove the deposited mortar, wherein a step for consecutively emitting abrasive particles and a step for inducing the recycled aggregate to fall to the area where the abrasive particle group is emitted are performed in parallel, and wherein the abrasive particles are brought into collision with the recycled aggregate to remove the deposited mortar.
B09B 3/00 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif
B09B 5/00 - Opérations non couvertes par une seule autre sous-classe ou par un seul autre groupe de la présente sous-classe
B24C 1/00 - Méthodes d'utilisation de jet abrasif en vue d'effectuer un travail déterminéUtilisation d'équipements auxiliaires liés à ces méthodes
B24C 3/32 - Machines ou dispositifs de traitement au jet abrasifInstallations de traitement au jet abrasif prévus pour le travail de pièces particulières, p. ex. de surface intérieure de blocs cylindres
B24C 7/00 - Équipement d'alimentation en matériau abrasifCommande de l'écoulement de la composition ou des autres caractéristiques physiques du jet abrasif
C04B 18/16 - DéchetsRésidus provenant de l'industrie du bâtiment ou de l'industrie de la céramique
3.
SAND MAKING APPARATUS, SAND MAKING METHOD, AND MADE SAND
Provided are a sand-making apparatus, a sand-making method and made sand, which can make effective use of the excessive by-product powder produced at a crushing step. The sand-making apparatus comprises a crusher (10), a first sorter (30) for wind- or sieve-sorting the crushed material into coarse particles (X), fine particles (Y) and powders (Z), and a dust collector (80) for sucking and recovering the powders (Z). Midway of the first selector (30) and the dust collector (80), there is disposed a second sorter (60) for sorting the powders (Z) into coarse powders (Z1) and fine powders (Z2) by the vacuum of the dust collector (80). The mixture of the fine particles (Y) and the coarse powders (Z1) is made into the sand, so that contribution is made to an improvement in the properties of concrete and a reduction of the excess by-product powder.
B02C 23/14 - Séparation ou triage de matériaux, associé au broyage ou à la désagrégation au moyen de plusieurs séparateurs
B02C 23/12 - Séparation ou triage de matériaux, associé au broyage ou à la désagrégation au moyen d'un séparateur situé dans le passage de décharge de la zone de broyage ou de désagrégation avec retour des matériaux hors dimension à la zone de broyage ou de désagrégation
B02C 23/32 - Passage de gaz au travers de la zone de broyage ou de désagrégation avec retour des matériaux hors dimension à la zone de broyage ou de désagrégation
B07B 1/00 - Criblage, tamisage ou triage des matériaux solides au moyen de treillis, grilles ou systèmes analogues
B07B 4/00 - Séparation des solides, obtenue en soumettant leur mélange à des courants de gaz
B07B 4/02 - Séparation des solides, obtenue en soumettant leur mélange à des courants de gaz pendant que le mélange tombe
B07B 9/00 - Combinaisons d'appareils à cribler ou tamiser ou à séparer des solides par utilisation de courants de gazDisposition générale des installations, p. ex. schéma opératoire
B07B 9/02 - Combinaisons d'appareils semblables ou différents, pour séparer les solides, par utilisation de courants de gaz
[PROBLEMS] To smoothly sort crushed minerals into those of various sizes by a compact means. [MEANS FOR SOLVING THE PROBLEMS] An air blow means such as a blow fan (3) for separating introduced minerals (12) by air force; and a sorting screen (11) which receives the fallen minerals, sorts the minerals (12) of a predetermined size or larger, and allows the minerals (12) of a size less than the predetermined size to pass therethrough are installed. The minerals (12) are blown off by the air blow means so that the positions where the minerals fall down can be changed according to their sizes, whereby the minerals can smoothly pass through the sorting screen (11) and the sorting means can be made compact.
B07B 1/00 - Criblage, tamisage ou triage des matériaux solides au moyen de treillis, grilles ou systèmes analogues
B07B 4/02 - Séparation des solides, obtenue en soumettant leur mélange à des courants de gaz pendant que le mélange tombe
B07B 9/00 - Combinaisons d'appareils à cribler ou tamiser ou à séparer des solides par utilisation de courants de gazDisposition générale des installations, p. ex. schéma opératoire
5.
METHOD OF MEASURING GRAIN SIZE AND APPARATUS FOR MEASURING GRAIN SIZE
A method of measuring grain size and an apparatus for measuring grain size whereby the grain size distribution of a granular material can be accurately measured in real time using a simple means. This apparatus comprises a vibration exciter (30) which forcedly vibrates a grain-mass mixture (A) to thereby divide the grain-mass mixture (A) and a measurement unit (40) whereby the surface layer roughness and the inner face roughness of the grain-mass mixture (A) having been divided by the vibration are measured for each grain size. The measurement unit (40) has a sensor (41) which is located toward the grain-mass mixture (A) having been divided by the vibration and a level rod (42) which is located in such a manner as allowing insertion thereof into the grain-mass mixture (A) having been divided by the vibration.
A centrifugal crusher having significantly improved crushing efficiency and energy saving characteristics. Support bodies (17) are projected from a side section of a rotor (10), and hammers (11) are attached to the heads of the support bodies (17). As a result, a penetration space is formed between the inner side of the hammers (11) and the side section of the rotor (10).
B02C 13/14 - Désagrégation par appareils à batteurs rotatifs à arbre du rotor vertical, p. ex. combinés avec des dispositifs de tamisage
B02C 13/16 - Désagrégation par appareils à batteurs rotatifs à arbre du rotor vertical, p. ex. combinés avec des dispositifs de tamisage à batteurs articulés sur le rotor
A centrifugal crusher which by itself can crush raw materials which differ in kind and size. The crusher is equipped with a means (30) for separately feeding raw materials to be crushed into a rotor (20). By the one centrifugal crusher, two or more kinds of materials to be crushed can be crushed and separately recovered.
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