| Patents for F27B 1 - Shaft or like vertical or substantially vertical furnaces (4,707) |
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| 10/09/1991 | CN2086402U Air chamber ventilating tower type mechanization vertical kiln |
| 10/09/1991 | CN1055165A Roasting of cement by differential process in vertical furnace |
| 10/01/1991 | CA1289743C Plant for producing steel from scrap |
| 09/24/1991 | CA1289311C Baking furance for electrodes |
| 09/19/1991 | WO1991014005A1 A process for producing metals and metal alloys in a smelt reduction vessel |
| 09/18/1991 | EP0446860A1 A process for producing metals and metal alloys in a smelt reduction vessel |
| 09/18/1991 | CN1054662A Probe for taking gas samples and heat measurements above charing surface of shaft furnace |
| 09/10/1991 | US5046908 Installation for charging a shaft furnace |
| 09/08/1991 | CA2037223A1 Probe for taking gas samples and heat measurements above the charging surface of a shaft furnace |
| 09/04/1991 | CN1054305A Smoke prevention and dust control apparatus for flame-reverse kiln burning coal |
| 09/04/1991 | CN1013804B Dedusting method and equipment for coupola furnace |
| 09/03/1991 | US5044940 Blast furnace air heater |
| 09/03/1991 | CA1288244C Installation for charging a shaft furnace |
| 09/03/1991 | CA1288243C Installation for charging a shaft furnace |
| 08/29/1991 | DE4030272A1 Treating metallic sludge contaminated with oil and other impurities - by superheating in shaft furnace and passing iron ore, carbon, scrap etc. into superheated melt to give steel or cast iron melt |
| 08/29/1991 | DE4006752A1 Coated coke esp. petroleum coke to limit gas evolution - with water-glass or milk of lime applied by spraying or impregnation |
| 08/28/1991 | EP0443126A1 Apparatus for exchanging tuyere in shaft furnaces |
| 08/28/1991 | CN2083732U Vertical flame energy-saving glaze burnign multi-hole kiln |
| 08/27/1991 | US5043735 Device for determining the topographic map of the loading surface of a shaft furnace |
| 08/21/1991 | CN2083278U Draught device of vertical cement kiln |
| 08/20/1991 | CA1287861C Device for the implantation of a parietal probe in a smelter-reducer oven |
| 08/14/1991 | CN2082842U High-blast level hot cyclone overheated type furnace cupola |
| 08/13/1991 | US5039068 Machine for drilling tapholes of a shaft furnace |
| 08/07/1991 | CN2082388U Power saving dust elimination devices for wheelpits |
| 08/07/1991 | CN2082387U Mortar unloading machines for dust eliminating |
| 08/07/1991 | CN2082386U Sealing and measuring apparatus for use on cement vertical kiln |
| 07/31/1991 | CN2081958U Full-automatic safety controller for fire injection of vertical cement kiln |
| 07/31/1991 | CN2081957U Dust-removing and heat-exchanging unit for cupola |
| 07/24/1991 | CN2081518U Cement machine vertical kiln thermodynamic parameter measuring and control instrument |
| 07/23/1991 | CA1286522C Nosepiece stopper for probe end, probing process in a melter oven by means of a probe having said stopper, and device of use in said process |
| 07/16/1991 | CA1286107C Apparatus and process for producing ferrous or non-ferrous metals from self-fluxing or not, self-reducing agglomerates or ores |
| 07/03/1991 | CN1013041B Supporting framework for loading installation of shaft furnace |
| 06/26/1991 | CN2079727U Duster for cupola furnace |
| 06/25/1991 | US5026030 Melting and holding furnace |
| 06/19/1991 | CN1052334A Hot air smelting method for lead blast furnace and its wind jacket in furnace |
| 06/11/1991 | US5022806 Apparatus for charging a shaft furnace |
| 06/05/1991 | EP0430740A1 Cooling plates for blast furnaces and cooling system utilizing such cooling plates |
| 06/05/1991 | CN2078430U Heat-exchanger of squirrel-cage low-noise mixer |
| 06/05/1991 | CN1012737B Method and equipment for water cooling and water seal of feed distributor of the blast furnace |
| 06/05/1991 | CN1012736B Process and apparatus for cooling loading installation of shaft furnace |
| 05/29/1991 | EP0428727A1 Vacuum induction furnace |
| 05/28/1991 | US5018968 Revolving grate cooler for cooling of clinker or similar products |
| 05/15/1991 | CA2029737A1 Cooling plates for blast furnace and refrigerating installation using these plates |
| 05/08/1991 | EP0425620A1 Process and device for smelting metals in cupola furnaces run without coke. |
| 05/08/1991 | DE4000147C1 Sewage sludge vitrification - by burning waste material above bath of molten glass for ashes in upper furnace section for carbon combustion etc. |
| 05/07/1991 | US5013237 Oven for dehydrating pulverulents, sand or granules |
| 05/01/1991 | CN1012522B Roller-track device for rotary hopper |
| 04/24/1991 | CN2075765U Fluidized particle constant furnace for detecting metrology |
| 04/23/1991 | US5009397 Plant to be used for metallurgical treatments of metal compounds and/or metal alloys or for producing calcium carbide |
| 04/10/1991 | CN1050607A Device for determining topographic map of loading surface of shaft furnace |
| 04/03/1991 | EP0296188B1 Process and device for introducing additives into a cupola or shaft furnace |
| 04/03/1991 | CN2074438U Dust remover with double-layer cover for limekiln roof |
| 03/20/1991 | EP0277947B1 Apparatus for producing ferrous or non-ferrous metals from self-fluxing or not, self-reducing agglomerates or ores |
| 03/20/1991 | CN2073538U Boilers using the remainer heat of water glass kiln |
| 03/13/1991 | CN2073098U Well type electric stove |
| 03/13/1991 | CN2073097U Multipurpose energy-saving electric stove |
| 03/13/1991 | CN1011980B Feed hopper for loading installation of shaft furnace |
| 03/12/1991 | US4998486 Landfill pollution control for polychlorinated biphenyls, firing |
| 03/08/1991 | CA2024734A1 Device for determining the topographic map of the loading surface of a shaft furnace |
| 03/06/1991 | EP0415038A1 Tubewall for a heatreactionroom |
| 03/06/1991 | CN2072665U Back swing supporting ring wind type machinery vertical kiln |
| 03/05/1991 | US4997363 Method and apparatus for producing cement clinker |
| 02/27/1991 | CN1011818B Device with hydrostatic transmission for feeding material |
| 02/26/1991 | US4996694 Method and apparatus for melting iron and steel scrap |
| 02/26/1991 | US4996402 Method and apparatus for continuously melting material by induction heating |
| 02/26/1991 | CA1280622C Method and device for monitoring combustion in furnace |
| 02/26/1991 | CA1280610C Smelting shaft furnaces for iron making and their operation |
| 02/26/1991 | CA1280593C Shaft melting furnace for melting metals |
| 02/20/1991 | CN1011705B Method and apparatus for correction of falling passageway of charging installation of shaft furnace |
| 02/13/1991 | CN2071318U Preventive cement main kiln collapse flame throwing device |
| 02/13/1991 | CN2071317U Outer heating rotary kiln for magnetic material sintering |
| 02/10/1991 | WO1991002095A1 Arrangement for introducing waste material into a molten slag |
| 02/10/1991 | CA2037905A1 Arrangement for introducing waste material into a molten slag |
| 02/06/1991 | CN1011516B Apparatus for controlling hydraulic jacks fixed to slewing hopper |
| 01/29/1991 | US4987838 Device for injecting preheated air into a shaft furnace |
| 01/23/1991 | CN2069993U Hydraulic machinery controller for cement kiln |
| 01/23/1991 | CN1011339B Charging material preheater for preheating charging material of metallurgical smelting unit |
| 01/23/1991 | CN1011338B Process for melting materials capable of forming fibres |
| 01/22/1991 | US4986516 Sealing shutter for a shaft furnace |
| 01/09/1991 | CN2069094U Spiral flow duster |
| 01/08/1991 | CA1278680C Powdery material injection device, namely coal, for blast furnace |
| 12/27/1990 | EP0269663B1 Method of preparing a melt for the production of mineral wool |
| 12/26/1990 | CN1010954B Installtion for charging shaft furnace |
| 12/19/1990 | CN2067812U Cupola |
| 12/19/1990 | CN1047918A Homogeneous air distribution method for vertical kiln |
| 12/13/1990 | WO1990015296A1 Calcium carbide production furnace by oxy-thermal process |
| 12/12/1990 | EP0401811A1 Apparatus for the thermal treatment of organic and inorganic materials |
| 12/12/1990 | EP0197137B1 Furnace cooling system and method |
| 12/12/1990 | CN2067392U Rolling and swinging type discharger for mechanical shaft kiln |
| 12/12/1990 | CN2067391U Coke-oven lid |
| 12/05/1990 | EP0400309A2 Charging device for the alternate feeding and distribution of solid materials with two grain sizes |
| 12/05/1990 | EP0400214A1 Metal melting and holding furnace |
| 12/05/1990 | CN2066960U Ventilation tower grate for elliptic cone high tower top centre |
| 12/05/1990 | CN2066959U Shunt power saving rotary kiln |
| 12/05/1990 | CN1010695B Installation for charging shaft furnace |
| 12/04/1990 | US4974817 Metal melting and holding furnace |
| 11/29/1990 | WO1990014568A1 Process and device for smelting metals in cupola furnaces run without coke |
| 11/29/1990 | WO1990014318A1 Method and installation for roasting (a) mineral material(s) |
| 11/28/1990 | CN2066566U High efficient energy saving stove with eliminating smoke and reducing dust |
| 11/21/1990 | CN2066126U Combined inside lining of cement kiln furnace |