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| Number | Title | Issue Date |
| 7229281 | Method of mixing high temperature gases in mineral processing kilns A method is described for reducing NOx emissions and improving energy efficiency during mineral processing in a rotary kiln. The method comprises injection of air with high velocity/high kinetic energy into the kiln to reduce or eliminate stratification o... | 06/12/2007 |
| 7204058 | Concrete arch and method of manufacture A flat-formed arch ring unit includes a linear array of voussoir portions connected along their upper edges. The unit is then archable. A method is provided for forming an archway including the steps of arching one or more the flat formed arch ring units and locatin... | 04/17/2007 |
| 7172414 | Rotary tubular kiln for the production of activated carbon The present invention relates to a rotary tube (1), in particular for a rotary tubular kiln for the production of activated carbon, said rotary tube (1) having a plurality of mixing elements (3), in particular metal turning plates, said mixing e... | 02/06/2007 |
| 7059808 | Split key segmental retaining wall system A segmental earth retaining wall block having a front side, a top side with a transversal tongue of a given width projecting from it, the tongue extending at a first distance from the front side, and a bottom side with a transversal groove made in it, the groove bei... | 06/13/2006 |
| 6938382 | Stockade A palisade comprises visible or wall surfaces disposed on opposing sides and intermediate end faces. One of the end faces is provided with a projecting convex head, while the other end face comprises a correspondingly formed concave receptacle for the head. When for... | 09/06/2005 |
| 6802709 | Rotary kiln with a hollow brick insulating lining A rotary kiln for pyro-processing a variety of materials, such as cement, lime, lime sludge, clay, shale, refractory grains, bauxite, garbage and minerals, that includes a continuously-rotated, cylindrical steel shell, having a feed end for receiving material, a pro... | 10/12/2004 |
| 6688884 | Rotary kiln heat exchanger and method of assembling same Rotary kiln heat exchangers having precast hub and leg assemblies are disclosed. The hub and leg assemblies include interlocking features which secure the heat exchanger components together. A method of installing such heat exchangers in rotary kilns is a... | 02/10/2004 |
| 6309211 | Port air conveying system for rotary kiln A rotary kiln includes a novel air conveying system for delivering a supply of port air beneath the material bed of feed stock passing through the interior of the kiln. The air conveying system includes an air inlet port disposed in the shell of the kiln,... | 10/30/2001 |
| 6257878 | Preformed modular trefoil and installation method A trefoil for a rotary kiln is provided that has at least three spoke-like refractory legs. Each one of the legs extends radially outwardly from a center of the trefoil; spans approximately from the kiln shell to the center of the kiln; is pre-formed outs... | 07/10/2001 |
| 6244859 | Rotary kiln A rotary kiln (1) is equipped with a horizontal kiln drum (3), arranged rotatable and drivable in a furnace body (2), which kiln drum is closed at the charging and delivery side by end plates (4, 5) forming central charging or delivery openings (6, 7), re... | 06/12/2001 |
| 5984672 | Ceramic fiber block for lining high temperature furnace A ceramic fiber block includes a welding stud disposed between two ceramic fiber layers centrally positioned in the ceramic fiber block. The welding stud includes a base stud which at its one end to be welded to a furnace wall and having a ceramic ferrule... | 11/16/1999 |
| 5873714 | Rotary kiln having a lining with a wave-shaped inner face A kiln for pyro-processing a variety of materials, such as cement, lime, lime sludge, clay, shale, magnesite, dolomite, and other minerals, includes a continuously-rotated, cylindrical, elongated shell having a feed end for receiving the material, a proce... | 02/23/1999 |
| 5704782 | Wear lining for a rotary furnace A wear lining for a rotary furnace of an incineration installation for, for example, chemical waste, wherein the wear lining comprises tapered bricks (1, 2, 3) which are installed in the furnace in the form of a vaulted lining, the main taper of each bric... | 01/06/1998 |
| 5704781 | Refractory wall brick for a heating channel of a ring pit furnace The invention relates to a cuboidal, fireproof wall brick for a heating channel of an open round-chamber kiln, having two horizontally extending setting surfaces, two vertically extending setting surfaces and two front surfaces, characterized by at least ... | 01/06/1998 |
| 5702247 | Kiln lining and method A rotary reactor is shown having an improved internal lining including a lifter section which extends along an interior surface of the reactor chamber for lifting material from a lower portion of the chamber to an upper portion thereof as the chamber rota... | 12/30/1997 |
| 5695329 | Rotary kiln construction with improved insulation means A rotary kiln apparatus including an outer kiln shell defining an interior heating chamber therein for receiving material for heating which preferably includes a rotational drive for rotating the kiln, and a plurality of refractory bricks movably position... | 12/09/1997 |
| 5623883 | Kiln for calcination of a powder An improved kiln for the calcination of a powder comprises a directly heated rotary kiln in which at least a part of the inner circumferential wall is equipped with a plurality of protrusions. The protrusions are shaped so that the powder is substantially... | 04/29/1997 |
| 5616023 | Rotary kiln with a polygonal lining A rotary kiln having a polygonal lining is disclosed for pyro-processing cement, lime, other minerals, as well as other materials. Specifically, utilizing a polygonal lining of brick or a refractory or ceramic material having between 3 and 12 sides improv... | 04/01/1997 |
| 5460518 | Rotary kiln with a cast polygonal lining A rotary kiln having a polygonal lining is disclosed for pyro-processing cement, lime, other minerals, as well as other materials. Specifically, utilizing a polygonal lining of a refractory or ceramic material having between 3 and 12 sides improves the he... | 10/24/1995 |
| 5330351 | Trefoil construction for rotary kilns The invention discloses a multichambered structure for a rotary kiln. At least three bases are formed from radial blocks equidistantly spaced about and adjustably attached at one surface thereof to the inner surface of the steel shell, each base extending axia... | 07/19/1994 |
| 5299933 | Rotary kiln with a polygonal lining A rotary kiln having a polygonal lining is disclosed for pyro-processing cement, lime, other minerals, as well as other materials. Specifically, utilizing a polygonal lining of brick or a refractory or ceramic material having between 3 and 12 sides improv... | 04/05/1994 |
| 5217367 | Heating drum for receiving a printing blanket to be vulcanized A heating drum for receiving a printing blanket to be vulcanized in a pressure chamber is comprised of a hollow drum body formed of a thin drum wall having a separating slot that extends parallel to the axis of the drum body. The drum body is hollow and m... | 06/08/1993 |
| 5033959 | Kiln liner A rotary kiln assembly has steel plates lining the kiln are mounted on hangers projecting through the plates and overlie an insulation layer.... | 07/23/1991 |
| 4988290 | Combustion space with a ceramic lining such as in the combustion chamber of an internal combustion engine or the combustion space in a rotary kiln furnace An internal combustion engine having combustion chambers with ceramic linings. These ceramic linings have webs between inner and outer surfaces for forming sealed cavities therein.... | 01/29/1991 |
| 4978294 | External heating rotary furnace This invention aims to offer an external heating rotary furnace for indirectly heating materials such as ore, coke, etc. which are liable to be oxidized, by insulating then from an oxidixing combustion gas atmosphere. The furnace comprises the following m... | 12/18/1990 |
| 4975049 | Refractory block for rotary kiln A refractory block assembly for the nose ring of a rotary kiln. Self-aligning nuts contained in recesses of a refractory casting generally align with bolts radially extending through holes spaced around the periphery of a retainer in the nose ring. The nu... | 12/04/1990 |
| 4960058 | Self-positioning refractory structure A self-positioning refractory structure having a generally cylindrical casing. A plurality of positioning refractories, a plurality of filler refractories and a plurality of wedge refractories are interlocked with respect to each other and positioned to f... | 10/02/1990 |
| 4952147 | Lime sludge kiln A kiln for reclaiming quick lime from calcium carbonate sludge formed in the production of cooking liquors in a wood pulping process for the production of paper. The kiln provides increased output with lower energy input due to: measurement and control of... | 08/28/1990 |
| 4846677 | Castable buttress for rotary kiln heat exchanger and method of fabricating A buttress (52) for buttressing an axial end (34) of a partition (36) in a multiple-chamber heat exchanger (28) comprises an integral solid cast from a refractory material. A thick axial end (55) of the solid is provided for compressive engagement with an... | 07/11/1989 |
| 4676740 | Heat exchange apparatus and process for rotary kilns Heat exchange apparatus is provided for use in a rotary kiln having a bed therein for introducing thermal energy directly into central portions of the bed without lifting or tumbling thereof. In this manner, efficient heat transfer is effected from hot up... | 06/30/1987 |
| 4569659 | Refractory lining for a furnace The invention relates to a lining for a furnace (1). The lining consists of pre-fabricated refractory ceramic anchoring elements (6, 7, 14), containing the fastening irons necessary for attaching the lining to the sheet mantle (5) and a refractory ceramic... | 02/11/1986 |
| 4543893 | Lining brick A lining brick for forming a refractory lining includes a hot side surface, a shell side surface opposite the hot side surface, a pair of spaced opposite hearing surfaces, a pair of spaced opposite butt surfaces, and recesses opening onto the shell side s... | 10/01/1985 |
| 4543061 | Air cooled rotary kiln feed end dam The feed end dam of a rotary kiln is cooled by air directed into an annulus between the feed end dam and a seal mechanism.... | 09/24/1985 |
| 4475886 | Lifter for rotary kiln An improved lifter for a rotary kiln is made by extending the internal reinforcement all the way to the inner face of the lifter and by locating the junction between the branches and the main stem of the lifter closer to the metal shell of the rotary kiln... | 10/09/1984 |
| 4418893 | Water-cooled refractory lined furnaces The metal shell of a furnace or cupola is cooled by means of water flowing down over the exterior surface of the metal shell. In order to reduce heat loss and thus decrease the energy consumption, the interior surface of the metal shell is lined with a fi... | 12/06/1983 |
| 4370128 | Protective device for a discharge end of a tubular rotary kiln A protective device for a discharge end of a tubular rotary kiln comprises a flange extending radially outwardly of the metal kiln shell, a metallic ring affixed to the flange and arranged concentric with the shell at the discharge end, and a refractory r... | 01/25/1983 |
| 4341514 | Standoff for two component lining and method of installation An apparatus is disclosed for securing a two component lining to the inside shell of a rotary kiln or the like. The apparatus includes a plurality of standoffs each having a bottom portion for connection to the inside shell of the kiln, a middle portion, ... | 07/27/1982 |
| 4340360 | Fire brick for a rotary kiln The present invention relates to a fire brick for a rotary kiln, provided on one or both large surface area portions with at least one concavity extending in the radial direction of the kiln, and opening on at least the face. The present invention further... | 07/20/1982 |
| 4295825 | System for the protection of the delivery end of a rotary kiln This invention concerns a system for the protection of the delivery end of a rotary kiln. This system is characterized by the fact that it consists of a refractory concrete ring covering the internal surface of the end of the kiln shell and the front surf... | 10/20/1981 |
| 4289479 | Thermally insulated rotary kiln and method of making same A wear-resistant, thermal protective, annular liner for a rotary kiln and an attendant method of making the same. The liner includes a series of elongate, axially aligned, annular composite liner sections, each of which comprises a layer of lightweight in... | 09/15/1981 |
