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1. 发明授权

US5865872A Method of recovering metals and producing a secondary slag from base metal smelter slag 失效
标题翻译：从金属冶炼炉渣中回收金属和生产二次炉渣的方法
公开(公告)号：US5865872A
公开(公告)日：1999-02-02
申请号：US815508
申请日：1997-03-12
申请人： David Krofchak , Werner Dresler
发明人： David Krofchak , Werner Dresler
IPC分类号： C04B5/06 , C04B7/147 , C04B7/19 , C04B18/14 , C04B28/02 , C21B3/04 , C21B3/06 , C22B7/04 , C22B5/04 , C21B15/02
CPC分类号： C04B7/147 , C04B18/144 , C04B5/06 , C04B7/19 , C21B3/04 , C21B3/06 , C22B7/04 , Y02P10/212 , Y02P40/143 , Y02W30/542 , Y02W30/543 , Y02W30/94 , Y10S75/959
摘要： A method of recovering metals and producing a secondary slag from base metal smelter slag produced by a copper or nickel smelter includes mixing the smelter slag with at least one reducing agent selected from the group consisting of carbon, calcium carbide, ferrosilicon and aluminum, said carbon and calcium carbide (if present) being from about 1% to about 40% by weight of the slag and said aluminum (if present) being from about 2% to about 35% by weight of the slag and with from zero to about 70% calcium oxide by weight of the slag, heating the mixture aluminothermically if Al is present as reducing agent above the melting point to reduce the smelter slag to a metal alloy containing iron and possibly silicon and aluminum, depending on the quantity of aluminum added to the smelter slag, and heavy metals such as copper, nickel and cobalt which were in the smelter slag and thereby also producing a secondary slag containing at least one compound selected from the group consisting of calcium silicate, calcium aluminate, fused alumina and calcium iron aluminum silicate, and separating the metal alloy from the secondary slag.
摘要翻译：由铜或镍冶炼炉生产的从金属冶炼炉渣回收金属和生产二次炉渣的方法包括将冶炼炉渣与选自碳，碳化钙，硅铁和铝的至少一种还原剂混合，所述碳并且碳化钙（如果存在）为渣的约1重量％至约40重量％，并且所述铝（如果存在）为炉渣的约2重量％至约35重量％，并且为零至约70重量％氧化钙以炉渣的重量加热，如果铝作为还原剂存在于熔点以上，则将铝混合物加热，以将冶炼炉渣还原成含铁和可能的硅和铝的金属合金，这取决于添加到冶炼厂中的铝量渣和重金属如铜，镍和钴，在熔渣中，从而也产生含有至少一种选自以下的化合物的二次渣：硅酸铝，铝酸钙，熔融氧化铝和铁酸钙铝硅酸盐，并将金属合金与二次渣分离。

2. 发明授权

US5968258A Method of making cement from base metal smelter slag 失效
标题翻译：从贱金属冶炼渣生产水泥的方法
公开(公告)号：US5968258A
公开(公告)日：1999-10-19
申请号：US74794
申请日：1998-05-08
申请人： David Krofchak
发明人： David Krofchak
IPC分类号： C04B7/21 , C04B18/14 , C04B28/02 , C22B7/04 , C04B7/147 , C04B7/153 , C04B7/19
CPC分类号： C04B7/21 , C04B18/144 , C04B28/02 , C04B5/06 , C04B7/147 , C04B7/19 , C21B3/04 , C21B3/06 , C22B7/04 , Y02P10/212 , Y02P40/143 , Y02W30/542 , Y02W30/543 , Y02W30/94
摘要： A method of making cement from base metal smelter slag produced by a nickel, copper, lead or zinc smelter, includes crushing the slag with a source of calcium sulphate to a size of less than about 1/4 inch and heating the mixture to produce a cement, and grinding the cement to a size in the range of from about -250 to about 425 mesh.
摘要翻译：一种由镍，铜，铅或锌冶炼厂生产的贱金属冶炼炉渣生产水泥的方法包括用硫酸钙源将炉渣粉碎至小于约+ E，1/4 + EE英寸的尺寸，加热混合物以产生水泥，并将水泥研磨至约-250至约425目的范围内的尺寸。

3. 发明授权

US5749962A Method of making cement from base metal smelter slag 失效
标题翻译：从贱金属冶炼渣生产水泥的方法
公开(公告)号：US5749962A
公开(公告)日：1998-05-12
申请号：US756861
申请日：1996-11-26
申请人： David Krofchak
发明人： David Krofchak
IPC分类号： C04B5/06 , C04B7/147 , C04B7/19 , C04B18/14 , C04B28/02 , C21B3/04 , C21B3/06 , C22B7/04 , C04B7/153
CPC分类号： C04B28/02 , C04B18/144 , C04B5/06 , C04B7/147 , C04B7/19 , C21B3/04 , C21B3/06 , C22B7/04 , Y02P10/212 , Y02P40/143 , Y02W30/542 , Y02W30/543 , Y02W30/94
摘要： Cement is made from base metal smelter slag produced by a nickel, copper, lead or zinc smelter. The slag is ground to a size within the range of from about -250 to about 425 mesh to produce ground slag cement, and the ground slag cement is mixed with Type 3 high early strength Portland cement in a ratio of at least about 0.5:1 by weight to produce a blended cement.
摘要翻译：水泥由镍，铜，铅或锌冶炼厂生产的贱金属冶炼炉渣制成。将矿渣研磨至约-250至约425目的范围内的大小，以产生研磨渣水泥，并将地渣水泥与3型高强度硅酸盐水泥以至少约0.5：1的比例混合，以生产混合水泥。

4. 发明授权

US6033467A Method of making cement or mine backfill from base metal smelter slag 失效
标题翻译：从贱金属冶炼渣生产水泥或矿山回填的方法
公开(公告)号：US6033467A
公开(公告)日：2000-03-07
申请号：US74793
申请日：1998-05-08
申请人： David Krofchak
发明人： David Krofchak
IPC分类号： C04B7/21 , C04B18/14 , C04B28/02 , C22B7/04 , C04B7/147 , C04B7/153 , C04B7/19
CPC分类号： C04B18/144 , C04B28/02 , C04B7/21 , C22B7/04 , Y02P10/212 , Y02P40/143 , Y02W30/94
摘要： A method of making cement from base metal smelter slag produced by nickel, copper, lead or zinc smelter, includes grinding the slag with clinker and blast furnace slag to a size in the range of from about -250 to about 425 mesh to produce ground slag cement, and mixing the ground slag cement with Portland cement in a ratio of at least about 0.5:1 by weight to produce a blended cement.
摘要翻译：一种由镍，铜，铅或锌冶炼厂生产的贱金属冶炼炉渣生产水泥的方法包括用炉渣和高炉渣将炉渣研磨至约-250至约425目的尺寸，以生产出渣水泥，并将地渣水泥与波特兰水泥以至少约0.5:1重量比的比例混合，以生产混合水泥。

5. 发明授权

US5626646A Method of recovering metals and producing a secondary slag from base metal smelter slag 失效
标题翻译：从金属冶炼炉渣中回收金属和生产二次炉渣的方法
公开(公告)号：US5626646A
公开(公告)日：1997-05-06
申请号：US663724
申请日：1996-06-14
申请人： David Krofchak
发明人： David Krofchak
IPC分类号： C04B5/06 , C04B7/147 , C04B7/19 , C04B18/14 , C04B28/02 , C21B3/04 , C21B3/06 , C22B7/04 , C21B15/00
CPC分类号： C04B28/02 , C04B18/144 , C04B5/06 , C04B7/147 , C04B7/19 , C21B3/04 , C21B3/06 , C22B7/04 , Y02P10/212 , Y02P40/143 , Y02W30/542 , Y02W30/543 , Y02W30/94
摘要： A method of recovering metals and producing a secondary slag from base metal smelter slag produced by a copper or nickel smelter includes mixing the smelter slag with at least one reducing agent selected from the group consisting of carbon and aluminum, said carbon (if present) being from about 1% to about 10% by weight of the slag and said aluminum (if present) being from about 5 to about 30% by weight of the slag, and with from zero to about 60% calcium oxide by weight of the slag. The mixture is heated above the eutectic melting point thereof directly and to ignition temperature aluminothermically (if aluminum is present as reducing agent) to reduce the iron silicate to ferrosilicon containing substantially all the copper, nickel and cobalt which was in the smelter slag and form a secondary slag comprising at least one compound selected from the group consisting of calcium silicate, calcium aluminate and calcium iron aluminum silicate. The ferrosilicon is then separated from the secondary slag.
摘要翻译：回收金属并由铜或镍冶炼炉生产的贱金属冶炼炉渣生产二次炉渣的方法包括将冶炼炉渣与至少一种选自碳和铝的还原剂混合，所述碳（如果存在）为炉渣的重量的约1％至约10％，所述铝（如果存在）为炉渣的约5至约30重量％，并且以炉渣重量计为零至约60％的氧化钙。将混合物直接加热到高于其共晶熔点的地方，并将铝热成型（如果铝以还原剂的形式存在），以将铁硅酸盐还原成含有基本上所有的在冶炼炉渣中的所有铜，镍和钴的硅铁，并形成包含至少一种选自硅酸钙，铝酸钙和硅酸钙铁铝的化合物的二次炉渣。然后将硅铁与二次炉渣分离。

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