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