| Patents for F27B 7 - Rotary-drum furnaces, i.e. horizontal or slightly inclined (5,396) |
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| 06/27/1990 | CN1008540B Direct reducing kiln |
| 06/20/1990 | EP0373673A2 Apparatus and process for removing volatile coatings from scrap metal |
| 06/19/1990 | US4934928 Rotating-drum heat treatment apparatus |
| 06/05/1990 | US4930965 Apparatus for charging solid fuel to rotary kilns |
| 05/31/1990 | WO1990005782A1 Method for energy recovery from solid hazardous waste |
| 05/29/1990 | US4929178 Method for the heat treatment of finely granular material |
| 05/16/1990 | EP0367956A1 Lifter for cooling drums, rotary drum furnaces or similar devices |
| 05/09/1990 | CN1007924B Heat exchanger |
| 04/03/1990 | US4913742 Process of making cement clinker and apparatus for performing said process |
| 03/22/1990 | WO1990002915A1 Process and arrangement for reducing salt cycles, in particular in cement kilns |
| 03/20/1990 | US4910684 Method of controlling a rotary kiln during start-up |
| 03/15/1990 | DE3829703A1 Method for inducing and supporting the longitudinal movement of rotary tubes |
| 03/14/1990 | EP0357939A2 Rotating drum |
| 03/14/1990 | CN1007177B Forced circulation furnace |
| 03/07/1990 | CN2054161U Swivel coupling for calcining furnace |
| 02/20/1990 | US4901448 Suspension preheater |
| 02/15/1990 | DE3826894A1 Rotary furnace with sectional combustion air supply |
| 01/24/1990 | CN1039103A Apparatus for breaking small range of scale and masonry in rotary kiln |
| 01/04/1990 | DE3822475A1 Heating system for high-temperature rotary tubular kilns |
| 01/03/1990 | EP0348769A2 Device for pressing the sealing material obturating the split between relative mouving parts, for example a rotative drum installation |
| 01/02/1990 | US4891007 Method and apparatus for the manufacture of cement from raw cement meal |
| 01/02/1990 | US4890563 Treatment of waste and rotary kiln therefor |
| 12/12/1989 | CA1263879A1 Circumferential sealing assembly |
| 11/30/1989 | DE3817357A1 Process and apparatus for the heat treatment of fine-grained material |
| 11/23/1989 | EP0342417A1 Process and device for removing settlings on the insides of rotary drums in lying position |
| 11/23/1989 | EP0342340A2 Gas suspension heat exchanger |
| 11/14/1989 | US4880379 Method for transforming a rotary kiln intended in particular for the manufacture of cement, kiln obtained by this method and burning line equipped with this kiln |
| 11/08/1989 | EP0340462A1 Rotating-drum furnace for drying or mixing freely flowing materials |
| 11/08/1989 | EP0340438A1 Device for breaking small parts of the settlings and the linings in rotary drum furnaces |
| 11/07/1989 | US4878949 Method for the production of cement clinker from semi-wet raw material |
| 10/24/1989 | US4875691 Radial seal |
| 10/19/1989 | DE3811425A1 Apparatus for charging furnaces |
| 10/18/1989 | EP0187861B1 Apparatus for preheating and charging raw materials for electric furnace |
| 10/11/1989 | CN1005426B Rotatable drum assembly |
| 09/20/1989 | EP0332709A1 Externally heated rotary kiln |
| 08/31/1989 | DE3805204A1 Arrangement for the attachment of a bearing race to the outer surface of a rotary tube |
| 08/29/1989 | US4861265 Apparatus and method for the heat treatment of fine-grained material |
| 08/16/1989 | EP0327717A2 Process and installation for the heat treatment of fines |
| 08/16/1989 | EP0327650A1 Apparatus to clear the flame area in a rotary drum furnace using direct heating, and arrangement and construction of the shovels |
| 07/27/1989 | DE3905345A1 Device for frictionally driving an object, in particular a drum |
| 07/26/1989 | EP0325189A1 Rotative drum with a bearing |
| 07/25/1989 | US4850290 Method for energy recovery from solid hazardous waste |
| 07/18/1989 | US4848993 Cyclone |
| 07/11/1989 | US4846677 Castable buttress for rotary kiln heat exchanger and method of fabricating |
| 07/05/1989 | CN2040624U Soda steam calciner |
| 07/04/1989 | CA1256693A1 Electric signal transfer system |
| 06/20/1989 | US4840561 Apparatus for the heat treatment of fine-grained material |
| 06/20/1989 | CA1336478B Recovery of Non-Ferrous Metals from Dross |
| 06/06/1989 | US4836775 Air cooled rotary kiln collar |
| 06/06/1989 | US4836560 Seal |
| 05/31/1989 | EP0318460A2 Process and apparatus for preheating raw material |
| 05/31/1989 | EP0174991B1 Circumferential sealing assembly |
| 05/30/1989 | CA1254739A1 Dust preheating system with incipient calciner |
| 05/23/1989 | CA1254384A1 Process and apparatus for thermally treating fine- grained solids, particularly for burning ground raw material for making cement |
| 05/23/1989 | CA1254381A1 Drying and heat treatment process and apparatus for a granular material |
| 05/03/1989 | EP0313871A2 Process and device for the thermal treatment of fines |
| 05/03/1989 | DE3736086A1 Double-walled rotary drum for burning, sintering, calcining and cooling |
| 05/03/1989 | DE3736084A1 Rotary drum for heating or cooling bulk materials |
| 05/03/1989 | DE3735825A1 Apparatus for calcining pulverulent materials |
| 04/27/1989 | DE3804155C1 Method for operating heating stations for charge materials of metallurgical melting furnaces |
| 04/13/1989 | DE3731950A1 Annealing furnace with horizontal-axis rotary hearth |
| 04/05/1989 | EP0310509A1 Transformation process for a rotary drum furnace, particularly for use in the production of cement |
| 03/28/1989 | US4817008 Method of regulating a cement manufacturing installation |
| 03/28/1989 | US4815970 Apparatus for the heat treatment of fine-grained material |
| 03/23/1989 | DE3828895A1 Melting apparatus |
| 03/21/1989 | US4813689 Dual face seal with radially projecting annular disc |
| 03/16/1989 | DE3729481A1 Process and apparatus for heat-treating fine-grained material |
| 03/14/1989 | US4811961 Seal for rotating cylinders such as kilns and the like |
| 03/09/1989 | WO1989002057A1 Externally heated rotary kiln |
| 02/28/1989 | US4808108 Method and apparatus for the heat treatment of fine-grained material |
| 02/14/1989 | US4804195 High temperature sealing device |
| 01/26/1989 | DE3824083A1 Device for protecting the opening of a rotary tube furnace |
| 12/28/1988 | EP0296824A1 Rotary kiln |
| 12/22/1988 | DE3718571A1 Apparatus for lubricating movable bearings |
| 12/21/1988 | CN87214792U Sectional revolving type rare earths continuous furnace |
| 12/20/1988 | CA1246867A1 Arrangement for improvement of heat economy in rotary kilns, in particular kilns for reburning lime mud |
| 11/17/1988 | EP0290488A1 Treatment of waste and a rotary kiln therefor. |
| 11/15/1988 | CA1244653A1 Process of producing sponge iron |
| 11/15/1988 | CA1244650A1 Heat exchanger |
| 11/15/1988 | CA1244649A1 Heat exchanger |
| 11/08/1988 | CA1244488A1 Process and apparatus for manufacturing low sulfur cement clinker |
| 11/01/1988 | US4781580 Indirectly heated rotary tubular kiln |
| 10/27/1988 | DE3711887A1 Drum for treating bulk material |
| 10/26/1988 | CN88101590A 旋流器 Cyclone |
| 10/19/1988 | CN88101763A Method and apparatus for the production of cement clinker from cement raw slurry |
| 10/13/1988 | DE3711145A1 Process and system for producing cement clinker from raw cement slurry |
| 10/11/1988 | US4776788 Rotary kiln |
| 10/05/1988 | CN88100725A Method and apparatus for production of cement clinker by semi-wet process |
| 10/04/1988 | US4775315 Process and apparatus for removal of deposits and linings from horizontal cylinders |
| 09/29/1988 | DE3744602A1 Device for sealing rotary tubular kilns (furnaces) with respect to fixed housings |
| 09/28/1988 | EP0284184A1 Cyclone |
| 09/22/1988 | DE3708224A1 Rotary drum for heat exchange between solid material and gas |
| 09/21/1988 | CN87215515U Discharging and dusting device for calcining kiln (furnace) |
| 09/14/1988 | CN87213507U Triple composite buffering multi flexable transmission device |
| 09/01/1988 | DE3705892A1 Process and system for the further processing of bypass dust in cement production |
| 08/31/1988 | EP0280005A2 Heat treatment device of fines |
| 08/31/1988 | CN87100767A Arrangement for preheating and calcination of powder raw material |
| 08/30/1988 | US4767462 Inclined oxygen-free chamber for spraying water; air drying |
| 08/30/1988 | US4767323 Lime kiln and method of retarding formation of slag ring therein |
| 08/24/1988 | EP0279169A2 Heat treatment device for fines |