| Patents for C22B 1 - Preliminary treatment of ores or scrap (10,434) |
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| 03/16/1994 | CN1083867A A method for producting a sinter cake |
| 03/15/1994 | US5294250 Comprising a carrier of synthetic fibrous forsterite and fine magnesium and/or calcium mineral and a polysaccharide; clay-free |
| 03/03/1994 | WO1994004710A1 Method and apparatus for producing sintered ore |
| 03/03/1994 | WO1994004709A1 Upgrading titaniferous materials |
| 03/02/1994 | CN1083117A Method for producing briquetting of cast-iron filings for smelting in cupola |
| 03/02/1994 | CN1023903C Process and apparatus for sintering operation |
| 02/17/1994 | WO1994003648A1 Binder composition and process for agglomerating particulate material |
| 02/17/1994 | WO1994003647A1 Treatment of titaniferous materials |
| 02/16/1994 | EP0583164A1 The production of stainless steel |
| 02/15/1994 | US5286278 Mixing with lime, dolomite, magnetite, dunite, olivine and/ or bauxite, pressurization |
| 02/12/1994 | CA2103843A1 Production of stainless steel |
| 02/09/1994 | EP0582006A1 Method for producing high-purity metallic chromium |
| 02/09/1994 | EP0365680B1 A method for producing a reduced chromium-ore bearing powder |
| 02/09/1994 | CN1023718C Method for processing of nickle oxide ore |
| 02/08/1994 | US5284303 Equipment for deoiling swarf resulting from machining operations |
| 02/02/1994 | CN1023652C Prereduction furnace of senelting reduction facility of iron ore |
| 02/01/1994 | US5282880 Low pressure plasma metal extraction |
| 01/12/1994 | EP0578253A1 Method for manufacturing agglomerates of fired pellets |
| 01/05/1994 | EP0577127A1 Process and installation for making mechanical- and thermal-stable, non-gassing agglomerates, such as briquettes or pellets |
| 01/05/1994 | CN1023411C Technology for roasting concentrated iron ore pellets on hand-type roasting machine |
| 01/04/1994 | US5276254 Forming sludge of flyash and calcium sulfate, dewatering, adding fuel and oxidation |
| 12/15/1993 | EP0574175A1 Process and apparatus for recovering metal values from ore |
| 12/15/1993 | EP0574035A1 Continuous feed shaft retort process and apparatus for recovery of non-ferrous metals |
| 12/14/1993 | US5270022 Process for the reduction roasting of manganese ores and a device therefor |
| 12/03/1993 | CA2097452A1 Process and apparatus for recovering metal values from ore |
| 12/01/1993 | EP0572322A1 Installation and process for the precalcination of any mineral matters |
| 12/01/1993 | EP0474704A4 Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases |
| 12/01/1993 | CN1022933C Dry process for cold briquetting of metallurgical dust |
| 11/23/1993 | CA1324493C Method for manufacturing agglomerates of fired pellets |
| 11/18/1993 | EP0569749A1 Vibrating bed cleaning device for oil-coated metal chips |
| 11/17/1993 | CN1022766C Brown iron ore ball production technology and equipment by vertical furnace method |
| 11/10/1993 | EP0568670A1 Regeneration of hydrochloric acid. |
| 11/03/1993 | CN2145194Y Cool-pressure ball forming machine for iron-smelting ore concentrate powder |
| 11/02/1993 | CA1323854C Process for the recycling of electrical batteries, assembled printed circuit boards and electronic components |
| 10/28/1993 | DE4213441A1 Recovering aluminium or brass machining chips - by briquetting under pressure, used for casting |
| 10/27/1993 | CN1077752A Sintering ore for producing an iron consisting of raw material of pisolite iron ore and process for producing the same |
| 10/26/1993 | US5256189 With zinc added to slurry before oxidation to render silver more extractable by cyanide leaching |
| 10/20/1993 | EP0565954A1 Carbonisation apparatus |
| 10/20/1993 | CN1077398A Preparation of granular compositions |
| 10/20/1993 | CN1022494C Ball making method of alloy powder material |
| 10/19/1993 | US5254320 Method for roasting sulphide ores |
| 10/14/1993 | WO1993020249A1 Mineral processing |
| 10/14/1993 | CA2093769A1 Carbonization apparatus |
| 10/12/1993 | US5251828 Process and apparatus for reclaiming co-extruded car trim |
| 10/06/1993 | CN1076967A Technique for steel-smelting from waste metal filings |
| 10/05/1993 | CA1322657C Treating refractory gold ores via oxygen enriched roasting |
| 10/05/1993 | CA1322629C Binder for metal-containing ores |
| 09/30/1993 | WO1993019213A1 Process and plant for removing lead and zinc from metallurgical-works dust |
| 09/30/1993 | WO1993010271A3 Improvement of the reduction process in p content and other gangues in iron ore and its agglomerates |
| 09/30/1993 | DE4209891A1 Verfahren zur Aufbereitung von Zink und Blei enthaltenden Hüttenwerksstaub Process for the preparation of zinc and lead-containing foundry dust |
| 09/28/1993 | US5248330 Method of pyroprocessing mineral ore material |
| 09/23/1993 | DE4209292A1 Spent metal and/or oxide catalyst regeneration by mechanical crushing - with specified energy density, esp. for catalyst used in oxidn., hydrogenation or hardening of fat, oil or fatty acid |
| 09/16/1993 | WO1993017963A1 Preparation of granular alkali metal borate compositions |
| 09/16/1993 | DE4207535A1 Addn. of paper residue from paper manufacturing into metal producing process - as redn. agent in the pyro-metallurgical mfr. of metal, to reduce cost of coke and wood |
| 09/14/1993 | US5244494 Producing iron oxide blast furnace feed pellets |
| 09/07/1993 | US5242483 Forming vanadium containing aggregate, mixing with iron to form aggregate, reduction |
| 09/07/1993 | US5242480 A process of mixing and agglomeration |
| 09/03/1993 | CA2062145A1 Self-fluxing binder composition for use in the pelletization of ore concentrates |
| 09/02/1993 | DE4204926A1 Removal of oil from metal-working waste - involving use of a high-pressure water jet |
| 08/31/1993 | US5240496 Pretreatment of chromium-bearing metal scrap to remove chromium |
| 08/31/1993 | US5240492 Metallurgical fluxes |
| 08/26/1993 | DE4205096A1 Solid and liq. waste recovery - comprises adding dry matter contg. top gas dust to homogenised mixt. for thermal processing |
| 08/25/1993 | CN1075508A Comprehensive utilization technique for ash and cinder of oxygen-blown open hearth |
| 08/24/1993 | US5238662 Processes for recovering precious metals |
| 08/19/1993 | WO1993016203A1 Iron-making sintered ore produced from pisolitic iron ore and production thereof |
| 08/19/1993 | WO1993016000A1 Acid regeneration |
| 08/17/1993 | US5236492 Recovery of precious metal values from refractory ores |
| 08/12/1993 | DE4203475A1 Recovering precious metals, esp. from electronic components - where components are charged into heated metal melt, the gaseous plastics components are burned in oxygen-enriched air, etc. |
| 08/04/1993 | CN1074947A Wet desulfuration of sulfurous iron ore slag and process for extracting associated valuable metals |
| 08/03/1993 | US5232491 Milling |
| 07/29/1993 | DE4219491A1 Sinter process for iron oxide based material contg. some combustible material |
| 07/28/1993 | CN1074714A Cold concretion high carbon content iron mineral ball group for iron-smelting |
| 07/28/1993 | CN1074713A Small-ball sintering mine making method of all-magnet concentrate |
| 07/20/1993 | US5228904 Reduction |
| 07/20/1993 | US5228900 Agglomeration of particulate materials with reticulated cellulose |
| 07/14/1993 | EP0551216A1 Autogenous roasting of iron ore |
| 06/29/1993 | US5223019 Method and apparatus for sintering operation |
| 06/24/1993 | DE4142107A1 Recovery of metals from scrap esp. underground cable - with different non-ferrous metals separated by m.pt. in revolving tube furnace, after removal of ferrous metal |
| 06/23/1993 | CN1021346C Method for manufacturing agglomerates of sintered pellets |
| 06/22/1993 | US5221512 Apparatus for preheating and removing organic materials from scrap iron |
| 06/22/1993 | US5221320 Controlling deposits in the calcination of fluxed iron ore pellets |
| 06/22/1993 | US5220872 Apparatus for separating contaminated material from impurities contained therein |
| 06/15/1993 | CA1319016C Ore pelletisation |
| 06/10/1993 | WO1993011573A1 Method of processing used batteries |
| 06/10/1993 | WO1993011269A1 Method and composition for use in recycling metal containing furnace dust |
| 06/09/1993 | EP0545766A1 Ferruginous coolant producing method for steel making in converters and so produced coolant |
| 06/05/1993 | CA2056902A1 Process and apparatus for the treatment of metal-laminated plastics scrap |
| 06/04/1993 | CA2084252A1 Low temperature thermal upgrading of lateritic ores |
| 06/02/1993 | CN1072614A Method and apparatus for treating gases and particulate solids in fluid bed |
| 06/01/1993 | US5215765 Two opposite rollers with cooling ducts; roller base body coated with nickel chromium molybdenum steel; recesses for shaping |
| 05/27/1993 | WO1993010271A2 Improvement of the reduction process in p content and other gangues in iron ore and its agglomerates |
| 05/27/1993 | WO1993010038A1 Regeneration of hydrochloric acid |
| 05/27/1993 | WO1993006952A3 Process for removing heavy metals from soils |
| 05/18/1993 | US5211920 Agglomerating agents for clay containing ores |
| 05/13/1993 | WO1993009257A1 Conglomerated dust material and method for manufacturing same |
| 05/12/1993 | EP0541181A1 Process for agglomerating particulate material and products made from such processes |
| 05/12/1993 | EP0540562A1 Decontamination and/or surface treatment of metals. |
| 05/12/1993 | CN1071963A Blocks of high-carbon and iron concentrate mixture and its mfg. process |
| 05/12/1993 | CN1020550C Waterflow differential electrical charging process for ores |
| 05/05/1993 | CN1071707A Recovery of silver and nickel leftover bits and pieces and contact material making method |