Patents Assigned to Kennedy Van Saun Corporation
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Patent number: 4826429Abstract: Apparatus for cooling a bed of pyroprocessed particulate material such as lime received from a source such as a kiln, the cooler including a shaft with one or more underlying hoppers through which the material flows as cooling air is forced upwardly therethrough. The invention embodies hoppers with uniform slopes at any given elevation, dual hopper slopes with one being extremely steep, internal flow guiding means, as well as an octagonal or partially octagonal wall configuration and matching scalloped octagonal hoppers. Also included is the concept of providing substantially equal areas of draw in any angular segment about the vertical center line of discharge from a hopper or cluster of hoppers. The resultant is more uniform flow of material down through the cooler and correspondingly more efficient cooling. Alternative embodiments include hopper transition pieces in lieu of the cooling shaft being constructed in an octagonal or partially octagonal configuration.Type: GrantFiled: January 15, 1988Date of Patent: May 2, 1989Assignee: Kennedy Van Saun CorporationInventor: Lee H. Niems
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Patent number: 4744155Abstract: Apparatus for minimizing dust in a kiln system for pyroprocessed particulate material such as lime received from a source such as a kiln. A suction nozzle is located in close proximity to the underside of a stream of falling particles discharging from a kiln where fines are noted to be characteristically concentrated and another suction nozzle is located under an underlying grate immediately adjacent the stream of falling particles channeled through the grate and in the zone of highest concentration of fines. By thus locating the nozzles in the zones of maximum concentration of fines significant quantities of dust can be removed by utilizing only a small fraction of the air and power required with other dust removal systems.Type: GrantFiled: December 22, 1986Date of Patent: May 17, 1988Assignee: Kennedy Van Saun CorporationInventor: Lee H. Niems
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Patent number: 4373451Abstract: An apparatus and method for feeding pulverized solid fuel to one or more burners of a kiln in which batches of the pulverized fuel are weighed and metered into air conduits at a rate controlled by the weight of the batch for the supply of an air-fuel mixture to the burners.Type: GrantFiled: April 6, 1981Date of Patent: February 15, 1983Assignee: Kennedy Van Saun CorporationInventors: Kenneth L. Gardner, Edward Gootzait, Edward T. Maciejewski, Donald L. Fisher
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Patent number: 4337030Abstract: A fuel burning kiln and process especially adapted for utilizing solid fuel in which one or more burners are accommodated within the kiln and a fuel and air mixture and a supplementary air supply are supplied to the combustion chamber of the burner through a pair of conduits arranged in heat exchange relationship one inside the other.Type: GrantFiled: March 3, 1980Date of Patent: June 29, 1982Assignee: Kennedy Van Saun CorporationInventors: Edward Gootzait, Donald L. Fisher
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Patent number: 4337031Abstract: An apparatus for preheating particulate material in which the particulate material is transferred from an upper storage bin to a lower annular flow passage by a plurality of connecting chutes and the particulate material is preheated in the annular flow passage by hot kiln gases flowing in countercurrent heat exchange relationship with the particulate material and, in addition, by hot kiln gases introduced into the annular flow passage from the lower regions of radially extending ducts.Type: GrantFiled: February 2, 1981Date of Patent: June 29, 1982Assignee: Kennedy Van Saun CorporationInventors: Kenneth L. Gardner, William E. Zimmer, Samuel A. Miller
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Patent number: 4248699Abstract: A pneumatic classifier and process in which a stream of fluid and the material to be classified are introduced in a swirling stream into a classification chamber, the coarser material migrates by centrifugal force to the outer portion of the stream, the inner and outer portions of the stream are divided, the outer portion of the stream containing the coarser particles is discharged from the classification chamber through a substantially tangential discharge passage, the inner portion of the stream is swirled in a closed path within the classification chamber, the finer particles are discharged from the classification chamber through a discharge passage which communicates with the region within the swirling stream and the recycled coarser particles rejoin the incoming swirling stream where they migrate outwardly by centrifugal force toward the outer stream.Type: GrantFiled: October 9, 1979Date of Patent: February 3, 1981Assignee: Kennedy Van Saun CorporationInventor: Risto T. Hukki
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Patent number: 4076493Abstract: Apparatus for cooling calcined or sintered particulate material discharged from a rotary kiln or other pyro-processing system. The apparatus includes an upright shell adapted to contain the material to be cooled, a mixing hopper arranged within the upper portion of the shell for mixing together particles of the material of different size and air distributing means arranged within the lower portion of the shell for releasing cooling air into the material. The apparatus is configured so that the cooling air moves counter to the direction of material flow.Type: GrantFiled: September 9, 1976Date of Patent: February 28, 1978Assignee: Kennedy Van Saun CorporationInventor: Kenneth L. Gardner