| Patents for C04B 2 - Lime, magnesia or dolomite (2,806) |
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| 02/23/1993 | CA1313747C Calcination apparatus |
| 02/02/1993 | US5183648 Contacting particles of refractory grade magnesia with a solution of an inorganic acid or a thereof, recovering and drying magnesia |
| 02/01/1993 | CA2074333A1 Single-stage slaking and causticizing method |
| 12/29/1992 | US5174749 Method and apparatus for heat treatment of pulverous material |
| 12/23/1992 | CN1019570B Making method of electric smelting magnesia |
| 12/22/1992 | US5173279 Method and composition for treating flue or exhaust gases utilizing modified calcium hydroxide |
| 12/08/1992 | CA1311091C Carbonate-containing mineral fillers, pigments and similar materials |
| 11/19/1992 | DE4116300A1 Carbonate mineral calcination - has an air-free deacidification zone between firing and cooling zones |
| 11/18/1992 | CN1066296A Method for treatment of chromium slag for comprehensive toxicity removal |
| 11/18/1992 | CN1066208A Method and apparatus for making building product |
| 11/04/1992 | EP0511286A1 Process for the slaking of quick lime contained in ashes |
| 10/28/1992 | EP0510675A2 Method of producing aqueous solution of slaked lime and apparatus therefor |
| 10/07/1992 | EP0507361A1 Method of deactivating slag material containing calcium oxide granules |
| 09/22/1992 | US5149448 Method and apparatus for thickening lime sludge |
| 09/08/1992 | US5145556 To produce calcium carbonate, clarification |
| 09/01/1992 | US5143481 Method of treating municipal sewage sludge and product produced thereby |
| 08/26/1992 | CN1063919A Low-temp and negative-temp quick-acting crushing agent |
| 07/29/1992 | EP0496432A1 Process for cleaning gases and exhaust gases |
| 06/17/1992 | CN1017082B Novel vertical kiln |
| 06/16/1992 | US5122350 Method for preparing calcium magnesium acetate and a residual mineral product by selectively calcining dolomite |
| 06/16/1992 | US5122190 Entraining partially calcined raw meal in kiln off gases, directing to bypass system, separating, hydrating |
| 06/11/1992 | WO1992009528A1 Method for preparing calcium and/or magnesium hydroxide, and use thereof |
| 06/09/1992 | CA1303019C Apparatus for the recuperative preheating of air fed to a lime shaft kiln or the like |
| 06/03/1992 | EP0487913A1 Highly reactive reagents and compositions for the purification of waste gas and waste water, their preparation and their use |
| 05/27/1992 | DE4138009A1 Slaking lime with temp. control using chemical modifier |
| 05/19/1992 | CA1300853C Method of and an apparatus for the treatment of power station residues |
| 05/13/1992 | EP0484637A1 Sulfur dioxide removal from gases using a modified lime |
| 05/13/1992 | CN1016587B Method of and apparatus for treatment of power station residues |
| 05/05/1992 | US5110567 Thickening by filtration, drying in pneumatic drier heated with flue gases from reburning kiln, roasting |
| 05/05/1992 | US5110289 Apparatus for heat treatment of lime mud |
| 04/22/1992 | EP0480960A1 Feeding system for a lime reburning kiln. |
| 04/15/1992 | EP0480587A2 Precipitated calcium carbonate |
| 04/14/1992 | US5103743 Method and apparatus for drying solid material |
| 04/08/1992 | CN1016183B Moulding coal brick containing mixture of waste slag and fuel |
| 03/28/1992 | WO1992006038A1 Precipitated calcium carbonate |
| 03/11/1992 | EP0473762A1 Process for manufacturing fibrous magnesium oxide |
| 03/06/1992 | WO1992004111A1 Process for producing sintered magnesia |
| 03/06/1992 | CA2090457A1 Process for producing sintered magnesia |
| 01/29/1992 | EP0468719A1 Precipitated calcium carbonate |
| 01/29/1992 | CN1058198A Method for producing highly active calcium oxide |
| 01/28/1992 | WO1992002457A1 Precipitated calcium carbonate |
| 01/25/1992 | WO1992001627A1 High surface area hydrated lime and methods |
| 01/21/1992 | US5082639 Sulfur dioxide removal from gases using a modified lime |
| 01/15/1992 | EP0466324A1 Method and apparatus for heat treatment of pulverous material |
| 01/08/1992 | EP0464631A2 Apparatus for preheating granular material |
| 01/08/1992 | CN1057631A Production process of electro-smelting magnesite with low silicon content |
| 01/01/1992 | CN1015283B Apparatus for roasting fine grained material |
| 12/31/1991 | CA1293740C Immobilization of lead and cadmium in solid residues from the combustionof refuse using lime and phosphate |
| 12/25/1991 | CN1057247A Technological process for refinement of magnesium oxide |
| 12/04/1991 | CN1056672A Making method of active lime powder agent for injection metallurgy |
| 11/27/1991 | CN1056513A Heat-insulating waterproof powder and productive method thereof |
| 11/27/1991 | CN1056474A Productive method of high-activity and-urity calcium hydroxide |
| 10/30/1991 | EP0454392A1 Method for thickening lime sludge |
| 10/09/1991 | EP0451021A1 Process for the formation of calcium oxide |
| 10/03/1991 | WO1991014659A1 Process for manufacturing fibrous magnesium oxide |
| 09/28/1991 | CA2039040A1 Methode and device for the formation of calcium oxide |
| 09/25/1991 | EP0448156A1 Process for preparing magnesia having reduced hydration tendency, hydration resistant magnesia, dry mixture for preparing magnesia based castables and magnesia based castable |
| 09/23/1991 | CA2056992A1 Process for preparing fibrous magnesium oxide |
| 09/11/1991 | CN1054411A Method for recovery of slaked lime powder |
| 07/31/1991 | CN2081841U Small-size verticle cement kiln with rotation supporting mechanism |
| 07/20/1991 | WO1991010628A1 Process for the slaking of quick lime contained in ashes |
| 07/20/1991 | CA2073338A1 Process for quenching quicklime contained in ashes |
| 07/03/1991 | CN1013035B Building materials |
| 06/18/1991 | CA1284878C Method and apparatus for producing dead burnt materials |
| 06/12/1991 | CN2078744U Carbide tower special adapted for preparation of magnesium oxide from magnesium limestone |
| 06/11/1991 | CA1284802C Process of removing polluants from exhaust gases |
| 05/02/1991 | WO1991005746A1 Method for preparing a mortar of lime and sand, sand-lime bricks produced thereof and apparatus for the preparation of the mortar |
| 04/30/1991 | US5011668 Reducing the proportion of insoluble anhydrite formed by reducing temperature of hot gas |
| 04/17/1991 | EP0422741A1 Method for preparing a mortar of lime and sand, sand-lime bricks produced thereof and apparatus for the preparation of the mortar of lime and sand |
| 04/16/1991 | US5007823 Dust recycling to rotary kilns |
| 03/20/1991 | EP0417705A1 Method and system for aqueous sewage sludge disposal |
| 03/06/1991 | CN1011890B Static crushing agent |
| 03/05/1991 | US4997357 Apparatus for treatment of power station residues |
| 02/20/1991 | CN1049324A Method of burning magnesia slightly by non-direct and its device |
| 02/20/1991 | CN1049323A Polymeric silicate liquid flocculating agent and preparation method |
| 02/13/1991 | CN1049145A Making method of electric smelting magnesia |
| 02/07/1991 | DE3925474A1 Roasting fine grained limestone to produce roasted lime - by hot compacting roasted fine grains before tempering to complete roasting |
| 01/04/1991 | WO1991000251A1 Feeding system for a lime reburning kiln |
| 11/29/1990 | WO1990014318A1 Method and installation for roasting (a) mineral material(s) |
| 11/20/1990 | CA1276433C Process of carrying out high-temperature reactions |
| 11/07/1990 | EP0396038A2 Lime dosing device and process for its operation |
| 10/24/1990 | CN1046319A Treating process of converting waste residue of epoxy ethane into lime putty |
| 09/19/1990 | CN1045385A Method for producing lime powder |
| 08/28/1990 | US4952243 Statical demolition-facilitating agent |
| 07/26/1990 | DE3914471C1 Line dosing device - includes advancing member, quenching vessel, line inlet and water supply point |
| 07/18/1990 | CN1008807B Prepn. and equipment of carbon dioxide by electro-heating ore |
| 07/11/1990 | EP0377010A1 Agent and process for cleaning gases and exhaust gases and process for producing said agent |
| 07/05/1990 | DE3844217A1 Process for preparing calcium hydroxides |
| 06/13/1990 | CN1007819B Carbonate-containing mineral fillers, pigments and similar materials |
| 06/12/1990 | US4932862 Suspended gas reactor |
| 06/05/1990 | CA1269830A1 Calcining process using fluid coke fuel |
| 05/09/1990 | EP0367148A1 Agents and method for purifying gases and waste gases from heavy metals, and method of producing these agents |
| 05/04/1990 | CA2001832A1 Process for calcining sludges of calcium materials and apparatus for carrying out the process |
| 05/03/1990 | DE3935904A1 Modified calcium hydroxide powder for heavy metal removal from gas |
| 04/17/1990 | US4917869 Lime hydrating plant and process of lime hydrating as well as flue gas desulfurization plant with such a lime hydrating plant and process of flue gas desulfurization |
| 04/04/1990 | CN2055498U Automatic monitor control system for bias fire of cement vertical kiln |
| 04/03/1990 | CA1267367A1 Procedure for filtering lime sludge meant to be regenerated to lime |
| 03/28/1990 | EP0359997A1 Process for the production of sintered dolomite in a rotary kiln |
| 03/15/1990 | DE3918290A1 Continuous lime slaking plant |
| 03/08/1990 | WO1990002104A1 Process for calcining rocks containing calcium carbonate to a given co2 content |