| Patents for C22B 1 - Preliminary treatment of ores or scrap (10,434) |
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| 03/09/1982 | CA1119411A1 Process for manufacturing iron ore sinters |
| 03/02/1982 | US4317803 Recovery of non-ferrous metals by thermal treatments of solutions containing non-ferrous and iron sulphates |
| 03/02/1982 | US4317800 Process for simultaneously processing of used metal and/or metal _scrap and scrap containing halogenated hydrocarbons |
| 03/02/1982 | US4317676 Process for producing sintered iron ore having high reducibility |
| 02/23/1982 | US4316543 Sieving roller conveyor for green pellets |
| 02/16/1982 | US4315972 Casting whose molding takes place during its recovery by means of filtration-dehydration |
| 02/09/1982 | CA1117766A1 Process for beneficiation of titanium ores |
| 02/02/1982 | US4313822 Method for recovering the lead and zinc values in secondary scrubber muds from blast furnace gases |
| 02/02/1982 | US4313757 Oxidizing magnestite to hematite |
| 02/02/1982 | US4313756 Process for upgrading iron ore pellets |
| 01/27/1982 | EP0044669A1 Self-reducing iron oxide agglomerates |
| 01/26/1982 | US4312695 Method and apparatus for everting a closure and separating a liner therefrom |
| 01/12/1982 | CA1115967A1 Process for desulfurization of coal and ores |
| 01/05/1982 | US4309216 Low density compacts of prepared mix for use in the production of silicon and ferrosilicon |
| 01/05/1982 | CA1115489A1 Method of processing aluminous ores |
| 12/29/1981 | US4308055 Process of briquetting sponge iron-containing material |
| 12/22/1981 | US4307066 From clays or ores by chlorination |
| 12/10/1981 | WO1981003500A1 Heavy metal recovery in ferrous metal production processes |
| 12/10/1981 | WO1981003499A1 Agglomerates,a process for producing thereof and use thereof |
| 12/08/1981 | US4304612 Method of treatment to remove harmful material from electric products impregnated with poly-chlorinated-biphenyl |
| 12/08/1981 | US4304595 Method of manufacturing crude iron from sulphidic iron-containing material |
| 12/02/1981 | EP0040870A1 Process of treating a dust which contains zinc and lead and which is derived from an iron or steel making process |
| 12/01/1981 | CA1113258A1 Method for controlling the heat content and evening out temperatures in various sulfidizing processes |
| 12/01/1981 | CA1113250A1 Roasting of sulphide materials |
| 11/25/1981 | EP0040223A1 Cold bonding mineral pelletization |
| 11/24/1981 | CA1113083A1 Method and apparatus for cooling reduced material such as finely-granular ore |
| 11/17/1981 | USRE30795 Green balls formed by agglomerating wet-collected fume produced in metallurgical furnaces |
| 11/17/1981 | CA1112456A1 Method of manufacturing crude iron from sulphidic iron-containing material |
| 11/04/1981 | EP0039305A1 Method of reducing pollution emission during sintering |
| 11/03/1981 | CA1111659A1 Process for recovering valuable metals from superalloy scrap |
| 10/20/1981 | US4295881 Process for extraction of platinum group metals from chromite-bearing ore |
| 10/07/1981 | EP0036919A1 Low density compacts of prepared mix for use in the production of silicon and ferrosilicon, method and apparatus for making same |
| 10/01/1981 | WO1981002747A1 Method and device for firing a sintering mixture |
| 09/30/1981 | EP0036609A1 Process and installation for the ignition of a sinter mixture |
| 09/29/1981 | US4292282 Process for recovering metals from catalysts for the hydrodesulfurization of hydrocarbons |
| 09/29/1981 | CA1109764A1 Dewatering ore concentrates |
| 09/29/1981 | CA1109679A1 Method for manufacturing pellets |
| 09/29/1981 | CA1109650A1 Process for producing pellets of pretermined size from a finely-divided material and an apparatus for carrying out the process |
| 09/22/1981 | US4290801 Method and installation for the cooling of reduced material such as fine grained ore |
| 09/17/1981 | WO1981002568A1 A method for working-up arsenic-containing waste products |
| 09/15/1981 | US4289735 Reduction and chlorination of alumina in fluidized bed in presence of solid diluent |
| 09/15/1981 | US4289529 Treatment with heat prior to reaction with metal compound to enhance magnetic susceptibility |
| 09/15/1981 | US4289528 Process for beneficiating sulfide ores |
| 09/15/1981 | US4289485 Sinter machine-pelletizing machine wear and baffle plate for pallet side plate |
| 09/09/1981 | EP0035196A1 Process for producing titanium tetrachloride |
| 09/08/1981 | US4288411 Process for the selective production of a plurality of individual pure halides and/or halide mixtures from a mixture of solid oxides |
| 09/08/1981 | US4288245 Process for producing agglomerates of metal containing ores and the product of the process |
| 09/08/1981 | CA1108406A1 Method for removing oil from mill scale and recovering metallic values therein |
| 08/26/1981 | EP0034579A1 Process and apparatus for treating dross and liquid scum |
| 08/26/1981 | EP0034434A1 Process for removing metal values from oxidic materials |
| 08/26/1981 | EP0034389A1 Method of agglomeration of fly ash into pellets |
| 08/18/1981 | US4284428 Separation of contaminant material from copper wire and cable |
| 08/18/1981 | CA1107064A1 Burner for flash smelting furnace |
| 08/11/1981 | US4283285 For making ore pellets from sludge |
| 08/11/1981 | CA1106619A1 Waelz process of volatilizing zinc and lead from iron oxide containing materials |
| 08/05/1981 | EP0033284A1 Process and device for the preparation of an ore mixture in an agglomerating plant |
| 08/04/1981 | CA1106169A1 Scrap preheater modulator roof assembly |
| 07/21/1981 | US4279640 Process for upgrading iron-containing materials |
| 07/14/1981 | US4278462 Oxidation of magnetite to hematite |
| 07/14/1981 | CA1104827A1 Process for treating a mud produced during gas scrubbing in a blast furnace or a steelworks |
| 07/14/1981 | CA1104819A2 Briquetting plant |
| 07/07/1981 | US4277235 Process of producing cool agglomerated solids |
| 06/30/1981 | US4276266 Process for recovering metal elements from carbonaceous products |
| 06/30/1981 | US4276100 Process for disposing of decoy flare material |
| 06/30/1981 | US4276081 Process for beneficiating ores |
| 06/30/1981 | CA1103939A1 Hydrometallurgical process for the treatment of soluble silicate-bearing materials |
| 06/30/1981 | CA1103932A1 Manufacture of steel products from solid materials |
| 06/30/1981 | CA1103923A1 Briquetting plant |
| 06/23/1981 | US4274878 Lead sulfide core coated with zinc sulfide; roasted to produce briquettes |
| 06/17/1981 | EP0030396A1 Process for the thermal treatment of pellets |
| 06/16/1981 | US4273575 Process for transforming fines of iron or manganese into raw-material for sintering |
| 06/10/1981 | EP0029879A2 Process and apparatus for the thermal recovery of metallic carbides or metals |
| 05/28/1981 | WO1981001421A1 Cold bonding mineral pelletization |
| 05/28/1981 | WO1981001420A1 A process for recovering non-ferrous metal values from ores,concentrates,oxidic roasting products or slags |
| 05/20/1981 | EP0028649A1 A process for bonding agglomerates |
| 05/13/1981 | EP0028341A1 Process for the recovery of residues produced during the manufacture and working of steel |
| 05/12/1981 | US4266966 Steelmaking dust is purified by pelletization, heating with a reducing agent, and exploding the pellets |
| 05/06/1981 | EP0028149A1 Apparatus and method for treating an aggregate material with a flowing gas |
| 05/06/1981 | EP0027849A1 Slag-conditioning process |
| 05/05/1981 | US4265700 Method of separating a solid and a liquid phase of a mass |
| 04/28/1981 | US4264203 Inspection of the interior of an enclosure |
| 04/28/1981 | US4264060 Apparatus for treating metallic scrap in the recovery of metal therefrom |
| 04/21/1981 | US4262825 Louvered clamshell door assembly for preheater charging bucket |
| 04/21/1981 | CA1099520A2 Process for the direct production of steel |
| 04/21/1981 | CA1099519A1 Fired iron-ore pellets having at least two different precipitated slag phases and process for producing the same |
| 04/21/1981 | CA1099518A1 Fired iron-ore pellets having macro pores and process for producing the same |
| 04/21/1981 | CA1099517A1 Method for the reduction, extraction and separation of metals and/or metal compounds from metal containing raw materials |
| 04/21/1981 | CA1099507A1 Method and apparatus for treating metallic scrap in the recovery of metal therefrom |
| 04/14/1981 | US4261737 Leaching ore with ammoniacal ammonium salt solution, adsorption oncarbon which has been pretreated with acid |
| 04/14/1981 | US4261459 Continuous grate track length compensator |
| 04/14/1981 | CA1099245A1 Method and apparatus for removing zinc type metals and compounds in dust recovery process in iron manufacture |
| 04/07/1981 | US4260373 Method and apparatus for drying and preheating small metallic particles |
| 04/07/1981 | US4260364 Burner for flash smelting furnace |
| 04/07/1981 | US4260139 Refining of metals |
| 04/07/1981 | CA1098713A1 Selective sulfation process for partitioning ferrous and non-ferrous values in an ore |
| 03/31/1981 | US4259106 Process for the roasting and chlorination of finely-divided iron ores and concentrates containing non-ferrous metals |
| 03/24/1981 | US4257881 By selective enchancing of magnetic susceptibility to permit physical separation from gangue |
| 03/24/1981 | US4257806 Fired iron-ore pellets having macro pores and process for producing the same |
| 03/17/1981 | US4256706 Leaching agglomerated gold - silver ores |
| 03/17/1981 | US4256676 Process for preparing porous metal oxide beads |