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公开(公告)号：US20180038650A1
公开(公告)日：2018-02-08
申请号：US15551526
申请日：2016-02-16
发明人： Mark Hayton , Rodney James Dry , Jacques Pilote
摘要： A method of removing a blockage in a solids injection lance under normal operating conditions of a direct smelting vessel is disclosed. The direct smelting vessel contains a bath of molten metal and slag and the solids injection lance extends into the direct smelting vessel and has an outlet end that is submerged in the molten slag. The solids injection lance further has a single inlet coupled to a section of supply line that conveys gas and solid feed material to the solids injection lance. The method comprises (a) advancing a blockage-removing tool through the supply line section and through the solids injection lance to an upstream side of the blockage, (b) operating the tool under elevated gas pressure conditions to remove the blockage such that solid feed material and gas are able to flow through the solids injection lance. The method further comprises (c) retracting the tool from the solids injection lance and the supply line section. Also disclosed is an apparatus for removing a blockage in a solids injection lance extending into a direct smelting vessel.
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公开(公告)号：US20170081745A1
公开(公告)日：2017-03-23
申请号：US15365026
申请日：2016-11-30
发明人： Rodney James Dry , Jacques Pilote
CPC分类号： C22C38/12 , C03C3/062 , C21B3/04 , C21B11/08 , C21B13/0006 , C21B13/0013 , C21C5/54 , C22C33/04 , Y02P10/136 , Y02P10/216
摘要： A molten bath-based direct smelting process comprises controlling the process conditions in a direct smelting vessel so that molten slag in a molten bath of metal and slag in the vessel has a viscosity in a range of 0.5-5 poise when the slag temperature is in the range of 1400-1550° C. in the molten bath in the vessel.
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公开(公告)号：US09458518B2
公开(公告)日：2016-10-04
申请号：US14363262
申请日：2012-12-06
IPC分类号： C21B5/00 , C22B5/10 , C21C5/54 , C21C5/00 , C21C5/46 , C21C5/04 , C22B5/12 , C21B13/00 , C21B13/02
CPC分类号： C21C5/00 , C21B5/00 , C21B5/001 , C21B13/0006 , C21B13/023 , C21C5/04 , C21C5/4606 , C22B5/10 , C22B5/12 , Y02P10/136
摘要： A method of starting a molten-bath based melting process includes establishing a sufficiently large and stable “hot zone” for ignition of oxygen and coal in a main chamber of a smelting vessel by independent means, i.e. independently of and before supplying cold oxygen and coal into the main chamber.
摘要翻译： 开始基于熔池的熔融工艺的方法包括：通过独立的方法，即独立于和供应冷氧和煤之前，建立一个足够大且稳定的“热区”，用于点燃熔炼炉主室中的氧气和煤 进入主室。
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公开(公告)号：US20150038317A1
公开(公告)日：2015-02-05
申请号：US14518295
申请日：2014-10-20
发明人： Rodney James Dry , Jacques Pilote
CPC分类号： C22C38/12 , C03C3/062 , C21B3/04 , C21B11/08 , C21B13/0006 , C21B13/0013 , C21C5/54 , C22C33/04 , Y02P10/136 , Y02P10/216
摘要： A molten bath-based direct smilting process comprises controlling the process conditions in a direct smelting vessel so that molten slag in a molten bath of metal and slag in the vessel has a viscosity in a range of 0.5-5 poise when the slag temperature is in the range of 1400-1550° C. in the molten bath in the vessel.
摘要翻译： 基于熔浴的直接捣碎过程包括控制直接熔炼容器中的工艺条件，使得当炉渣温度处于熔池中时，容器中金属和炉渣的熔池中的熔渣具有0.5-5泊的范围内的粘度 在容器中熔融浴中的范围为1400-1550℃。
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公开(公告)号：US20160153715A1
公开(公告)日：2016-06-02
申请号：US14889018
申请日：2014-05-02
CPC分类号： F27D3/18 , C21B7/163 , C21B7/24 , C21C5/4606 , C21C5/4673 , C21C2005/4626 , F27D3/0033 , F27D3/16 , F27D2003/164 , F27D2003/168 , F27D2003/169 , F27D2021/0007
摘要： A solids injection lance includes (a) a tube that defines a passageway for solid feed material to be injected through the tube and has an inlet for solid material at a rear end and an outlet for discharging solid material at a forward end of the tube and (b) a puncture detection system for detecting a puncture in the solids injection tube.
摘要翻译： 固体注射枪包括（a）管，其限定待通过管注入的固体进料的通道，并且在后端具有用于固体材料的入口和用于在管的前端排出固体材料的出口， （b）用于检测固体注射管中的穿刺的穿刺检测系统。
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公开(公告)号：US20140345425A1
公开(公告)日：2014-11-27
申请号：US14363217
申请日：2012-12-06
CPC分类号： C21B11/08 , C21B13/0013 , C21B2100/282 , C21B2100/42 , C21B2100/66 , C21C5/567 , C21C7/0087 , C22B5/10 , C22B5/12 , F27B3/105 , F27B3/225 , F27D3/1536 , F27D3/16 , F27D3/18 , F27M2003/13 , Y02P10/122 , Y02P10/136 , Y02P10/265 , Y02P10/283
摘要： A method of starting a smelting process in a smelting vessel includes heating frozen slag and forming molten slag and draining molten slag from a forehearth connection via a forehearth and establishing a clear flow path through the forehearth connection and thereafter hot starting the smelting process.
摘要翻译： 在熔炼炉中开始冶炼过程的方法包括加热冷冻炉渣并形成熔融炉渣，并通过前炉从前炉连接排出熔融炉渣，并建立通过前炉连接的清晰流动路径，然后热开始冶炼过程。
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公开(公告)号：US20140318319A1
公开(公告)日：2014-10-30
申请号：US14363262
申请日：2012-12-06
CPC分类号： C21C5/00 , C21B5/00 , C21B5/001 , C21B13/0006 , C21B13/023 , C21C5/04 , C21C5/4606 , C22B5/10 , C22B5/12 , Y02P10/136
摘要： A method of starting a molten-bath based melting process includes establishing a sufficiently large and stable “hot zone” for ignition of oxygen and coal in a main chamber of a smelting vessel by independent means, i.e. independently of and before supplying cold oxygen and coal into the main chamber.
摘要翻译： 开始基于熔池的熔融工艺的方法包括：通过独立的方法，即独立于和供应冷氧和煤之前，建立一个足够大且稳定的“热区”，用于点燃熔炼炉主室中的氧气和煤 进入主室。
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公开(公告)号：US20230203606A1
公开(公告)日：2023-06-29
申请号：US17926819
申请日：2021-05-28
发明人： Rodney James Dry
CPC分类号： C21B13/0033 , C21B13/004 , C21B13/0066 , C21B13/143 , C21B13/12
摘要： A process for producing direct reduced iron (“DRI”) from iron ore and biomass in a single stage fluidised bed includes injecting (a) iron ore, (b) gaseous oxygen and (c) a solid reductant including biomass into a reaction zone of the fluidized bed operating in a temperature range of 750-850#C and reducing iron ore and forming DRI in the fluidized bed and discharging DRI having a metallisation of at least 70% from the fluidised bed.
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公开(公告)号：US09771626B2
公开(公告)日：2017-09-26
申请号：US14416378
申请日：2013-07-18
发明人： Carolyn McCarthy , Rodney James Dry
IPC分类号： C21B11/08 , C21B13/10 , C21B13/14 , C21C5/46 , C21C5/56 , F27B3/04 , F27B3/24 , F27B3/28 , C21B13/00 , F27B3/02 , F27B3/22 , C21C5/04 , C22B5/10 , C21C5/30 , C21C5/52 , F27D3/16 , F27D3/18
CPC分类号： C21B11/08 , C21B13/0006 , C21B13/0013 , C21B13/10 , C21B13/14 , C21B2100/66 , C21C5/04 , C21C5/305 , C21C5/4646 , C21C5/567 , C21C2005/5288 , C21C2100/02 , C21C2200/00 , C22B5/10 , F27B3/02 , F27B3/045 , F27B3/22 , F27B3/24 , F27B3/28 , F27D2003/168 , F27D2003/185 , Y02P10/136 , Y02P10/216 , Y02P10/265 , Y02P10/283
摘要： A method of starting a molten bath-based process for smelting a metalliferous material is disclosed. The method includes using the heat flux of water-cooled elements in lower parts of a smelting vessel to provide an indication of molten bath temperature during at least an early part of the start-up method and adjusting injection rates of oxygen-containing gas and/or carbonaceous material into the smelting vessel to control the molten bath temperature during start-up without exceeding critical heat flux levels and tripping the start-up method.
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公开(公告)号：US20170254591A1
公开(公告)日：2017-09-07
申请号：US15463886
申请日：2017-03-20
发明人： Rodney James Dry
CPC分类号： F27D3/00 , C21C5/4606 , C21C5/466 , C21C5/5217 , C21C5/527 , C22B4/08 , C22B5/10 , F27B3/18 , F27D3/18 , F27D19/00 , F27D21/00 , Y02P10/216
摘要： A material supply apparatus and process for co-injecting heated solid metalliferous material and solid carbonaceous material via a solids injection lance into a direct smelting vessel are disclosed.
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