-
公开(公告)号：US20220347651A1
公开(公告)日：2022-11-03
申请号：US17760522
申请日：2020-09-22
摘要： Lime-based sorbent suitable for use in a flue gas treatment process comprising at least 70 wt. % of Ca(OH)2 and at least 0.2 wt. % to at most 10 wt. % of a first additive selected among the group of hydrogels of natural or synthetic origin, in particular superabsorbent polymers (SAPs) or in the group of cellulose ethers or a combination thereof, premix for use in a manufacturing process of said sorbent, process for manufacturing the sorbent and use of said sorbent in a flue gas treatment process
-
2.发明申请公开(公告)号：US20220259098A1
公开(公告)日：2022-08-18
申请号：US17673346
申请日：2022-02-16
发明人： Deborah Ballard , Kirsten Ballard
摘要： A method is shown for forming a high solids reactive lime slurry from quicklime. The timely addition of a carbohydrate and antiscalant polymer to slaking water provides desirable degree of control over the rate of reaction in which the heat of reaction is moderated to ensure the antiscalant polymer remains intact, thereby producing a fine quicklime slurry with low and stable viscosity.
-
公开(公告)号：US20220178001A1
公开(公告)日：2022-06-09
申请号：US17539728
申请日：2021-12-01
摘要： A pyro-metallurgical process for producing at least one non-ferrous metal or a compound thereof, wherein said metal is selected from the group consisting of arsenic (As), antimony (Sb), lead (Pb), cadmium (Cd), mercury (Hg), silver (Ag), tin (Sn), nickel (Ni), and zinc (Zn), and wherein at least one raw material is fed into a rotary kiln, wherein said at least one raw material comprises at least said metal, and wherein said raw material is heated to produce a volatized material, in which the non-ferrous metal or compound thereof is produced from the volatized material, in which process a magnesium-based additive, is additionally fed in the rotary kiln in an amount of between 0.5 wt. % and 9.5 wt. % relative to the total weight of said raw materials, which magnesium-based additive is heated together with said raw material to produce at least the volatized material and a solid product, thereby counteracting ring formation in the rotary kiln.
-
公开(公告)号：US20210395846A1
公开(公告)日：2021-12-23
申请号：US17309680
申请日：2019-12-17
发明人： Eric Perrin , Souliyann Chunlamani
IPC分类号： C21C7/064
摘要： Process for manufacturing a slag conditioning agent for steel desulfurization wherein a dried slag material obtained from secondary steelmaking process is mixed with quicklime particles to produce a slag conditioning agent.
-
公开(公告)号：US10822668B2
公开(公告)日：2020-11-03
申请号：US15541789
申请日：2016-01-08
发明人： Michael Nispel , Guillaume Criniere , Eric Perrin , Thierry Chopin , Jose Noldin
摘要： Process for dephosphorization of molten metal during a refining process using a lime composition in the form of compacted particles having a Shatter Test Index of less than 20%, leading to a refined metal reduced in phosphorus components to the extent that the refined metal reduced in phosphorus is showing a phosphorus content lower than 0.02 w % based on the total weight of the refined metal reduced in phosphorus.
-
公开(公告)号：US10351775B2
公开(公告)日：2019-07-16
申请号：US14385897
申请日：2013-03-22
IPC分类号： C09K21/02 , C04B28/10 , C04B2/10 , C04B14/26 , C04B18/02 , C01F5/24 , C01F11/18 , C04B111/28
摘要： A mineral composition made from a mixed solid phase of calcium and magnesium carbonates, method of preparing same and use thereof. A mineral composition made from a mixed solid phase of calcium and magnesium carbonates, formed from a crystallized calcium portion and a crystallized magnesium portion in the form of platelets, the crystals of the calcium portion and those of the magnesium portion being aggregated in the form of composite aggregates, said aggregates themselves being at least partially agglomerated, said calcium portion comprising at least one carbonate chosen from the group consisting of calcite, aragonite and the mixtures thereof, said magnesium portion comprising hydromagnesite in platelet form, said mixed solid phase having a bulk density less than or equal to 250 kg/m3, and greater than or equal to 80 kg/m3, measured according to standard EN 459.2.
-
公开(公告)号：US07744678B2
公开(公告)日：2010-06-29
申请号：US11922167
申请日：2006-06-26
申请人： Alain Laudet , Amandine Gambin
发明人： Alain Laudet , Amandine Gambin
CPC分类号： C04B2/06 , B01D2251/404 , B01D2251/604 , B01J20/041 , B01J20/043 , B01J20/045 , B01J20/046 , B01J20/048 , B01J20/28059 , B01J20/28071 , B01J20/3085 , C01F11/02 , C01P2004/61 , C01P2006/12 , C01P2006/14 , C01P2006/80
摘要： Powdered lime composition having a BET specific surface area that is equal to or greater than 25 m2/g and a BJH total pore volume obtained from nitrogen desorption that is equal to or greater than 0.1 cm3/g, and furthermore comprising an alkali metal. The alkali metal content is equal to or greater than 0.2% and equal to or less than 3.5% based on the total weight of the composition. There is also described a method of preparing the composition and use thereof to reduce flue gases.
摘要翻译： 具有等于或大于25m 2 / g的BET比表面积和等于或大于0.1cm 3 / g的氮解吸获得的BJH总孔体积，并且还包含碱金属的粉煤灰组合物。 基于组合物的总重量，碱金属含量等于或大于0.2％且等于或小于3.5％。 还描述了制备组合物的方法和用于减少烟道气的方法。
-
公开(公告)号：US20240247330A1
公开(公告)日：2024-07-25
申请号：US18435044
申请日：2024-02-07
发明人： Eric Perrin , Souliyann Chunlamani
IPC分类号： C21C7/064
CPC分类号： C21C7/0645
摘要： A slag conditioning agent for steel desulfurization is shown which is made by a process in which a dried slag material obtained from a secondary steelmaking process is mixed with quicklime particles. The quicklime particles react with moisture in the slag material to dry the slag material and produce a blend of slag material, hydrated lime and any unreacted quicklime. The blend is then sieved to separate out the hydrated lime. The retained dried fraction after sieving is then mixed with an Al2O3 mass fraction from which the slag conditioning agent can be collected. The slag conditioning agent has an equivalent mass ratio which is between 0.55 and 1.5.
-
公开(公告)号：US20240217873A1
公开(公告)日：2024-07-04
申请号：US18558315
申请日：2022-05-10
发明人： Ziad HABIB , Olivier VAN CANTFORT
IPC分类号： C04B2/12 , B01D53/62 , B01D53/83 , B01D53/96 , B01J20/04 , B01J20/34 , C04B2/10 , F27B1/22 , F27D17/00
CPC分类号： C04B2/12 , B01D53/62 , B01D53/83 , B01D53/96 , B01J20/041 , B01J20/3433 , B01J20/3483 , C04B2/102 , F27B1/22 , F27D17/004 , B01D2251/404 , B01D2251/602 , B01D2253/1124 , B01D2257/504 , B01D2258/0233 , B01D2258/0283 , F27D2017/006 , F27M2003/03
摘要： A method for producing lime or dolime, which includes a calcination step for the calcination of calcareous or dolomitic material which is brought into contact with the first fumes which are obtained by combustion of fuel with an oxidizing gas, a cooling of calcined lime or dolime with discharge and collection thereof and a release of a gaseous effluent containing CO2. Subsequent processing steps result in the formation of a CaO-based sorbent material with separation between the CaO-based sorbent material and a CO2-concentrated gas stream which is collected. The recycling of said separated CaO-based sorbent material is recycled into a CO2 depletion step resulting in the extraction of a valorizable fraction of the CaCO3—CaO based charge with a compensatory introduction of fresh CaCO3 in the calcination step.
-
公开(公告)号：US12018345B2
公开(公告)日：2024-06-25
申请号：US17539728
申请日：2021-12-01
摘要： A pyro-metallurgical process for producing a non-ferrous metal or a compound thereof, wherein a metal raw material is fed into a rotary kiln, the metal being one of arsenic (As), antimony (Sb), lead (Pb), cadmium (Cd), mercury (Hg), silver (Ag), tin (Sn), nickel (Ni), or zinc (Zn). The raw material is heated to produce a volatized material, in which the non-ferrous metal or compound thereof is produced from the volatized material. A magnesium-based additive is additionally fed to the rotary kiln in an amount of between 0.5 wt. % and 9.5 wt. % relative to the total weight of the raw material. The magnesium-based additive is heated together with the raw material to produce the volatized material and a solid product while also counteracting ring formation in the rotary kiln.
-
-
-
-
-
-
-
-
-
搜索结果
34 条记录 (耗时 0.023 秒)
