Smelting Oxidation Desulfurization of Copper Slags
1 Average composition of investigated slags slag 1 and slag 2 The average lead content is 1.5 % in slag 1 and 4.4 % in slag 2,according to literature and own investigations about 80 % of the lead is present in metallic form .The average zinc content amounts to 11.1 % in slag 1 and to 12.8 % in slag 2.slag zinc zone reduction oxidation Prior art date 1985-04-03 Legal statussciencedirect Smelting Oxidation Desulfurization of Copper Slags#0183; Smelting Oxidation Desulfurization of Copper Slags#0183;The samples were subjected to a series of analysis and observation.Such processes of the feed in reaction shaft as oxidation,desulfurization,melting,slag and matte formation and etc.,variations of particle size along axial and radical direction ofmagnesium processing Techniques Methods BritannicaMagnesium (Mg) is a silvery white metal that is similar in appearance to aluminum but weighs one-third less.With a density of only 1.738 grams per cubic centimetre,it is the lightest structural metal known.It has a hexagonal close-packed (hcp) crystalline structure,so that,like most metals of this structure,it lacks ductility when worked at lower temperatures.
US4110107A Process for reducing molten furnace slags by .A process is provided for recovering metals from metalcontaining slags such as ironcopper slags from copper smelting furnaces and ironnickel slags produced in smelting nickelbearing ores the molten slag is fed to an electricarc furnace wherein a molten metal bath is formed a carbon injection unit,including an injector[ePUB,Kindle,PDF] Free Download Kinetics of Copper [ePUB,Kindle,PDF] Free Download A Practical Guide to the Manufacture of Sulfuric Acid,Oleums,and Sulfonating Agents eBoook for tablet kindle iPhone Android 1152[ePUB,Kindle,PDF] Free Download Kinetics of Copper [ePUB,Kindle,PDF] Free Download A Practical Guide to the Manufacture of Sulfuric Acid,Oleums,and Sulfonating Agents eBoook for tablet kindle iPhone Android 1152
In a method of operating a copper smelting furnace,wherein a ferrous substance containing more than 80 wt.% metallic iron having a specific gravity of 3.0-8.0 and particle diameter of 0.3-15 mm is added to copper smelting slag containing Fe having an oxidation-reduction number of 3+ and to the Fe 3 O 4 in the intermediate layer,thereby deoxidizing the Fe 3 O 4 to FeO,theThe Minerals,Metals and Materials Ser.Extraction 2018 Sulfide Smelting Development in Japan during the Past Half Century.- Review of Boliden Harjavalta Nickel Smelter.- Redesign and Rebuild of the Pan Pacific Copper Flash Smelting Furnace.- From Fundamentals to Furnace Control - Making the Most of Modern Technologies.- Pyrometallurgical Processing of Desulphurization Slags.-Sulfuric acid,slag,gypsum,etc.Nonferrous Metals and Sulfuric acid is produced in the copper smelting process using as raw material the sulfur contained in copper concentrate.It is a colorless,odorless viscous liquid,and multiple products are manufactured for different uses,which range widely from industry to agriculture.
Abstract.AbstractIn order to recover the iron in copper smelting slag quenched with water in smelters,carbothermic reduction was adopted to reduce the iron oxide existing in different phase such as fayalite,vitreous and magnetite in the slag to metal iron.Study on Recovering Iron from Smelting Slag by In order to recover the iron in copper smelting slag quenched with water in smelters,carbothermic reduction was adopted to reduce the iron oxide existing in different phase such as fayalite,vitreous and magnetite in the slag to metal iron.Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456Next
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The smelting stage involves the oxidation of the feed to form a copper matte and copper smelting within a smelting and refining operation in L Smelting Oxidation Desulfurization of Copper Slags#252;nen,Germany .Figure are the slag chemistry,desulfurization of the blister copper,containment of the melt and smelter layout.Sixth International Conference on Molten Slags,Fluxes and COPPER IN SOLIDIFIED COPPER SMELTER SLAGS H.Jalkanen,J.Vehvil Smelting Oxidation Desulfurization of Copper Slags#228;inen and J.Poij Smelting Oxidation Desulfurization of Copper Slags#228;rvi.Paper 174 Poster THE INTERACTION BETWEEN CUPRIC FERRITE AND COPPER MATTE/ SLAG AT 1300 Smelting Oxidation Desulfurization of Copper Slags#186;C Y.Fan,R.Parra,F.Parada and I.Wilkomirsky.Paper 175 Poster DISTRIBUTION OF Cu AND Pb BETWEEN COPPER ALLOYS AND FLASH SMELTING SLAGSimultaneous Removal of SO2 and NOx from Coal-FiredA method for simultaneously removing sulfur dioxide (SO2) and nitrogen oxides (NOx) from coke oven flue gas using steel slag slurry was proposed.Due to the high removal efficiency of SO2,the effects of operation conditions on the removal of NOx were investigated emphatically.The results showed that the removal efficiency of NOx increased with an increase in steel slag
The study of copper slag has attracted the attention of scholars from both China and around the world.But few have paid attention to its applications in the simultaneous removal of SO 2 and NO x in wet flue gas desulfurization (WFGD),becasue WFGD technique is inappropriate for directly treating NO x owing to the low solubility of NO.Simultaneous NOx and SO2 removal during wet flue gas Nov 10,2020 Smelting Oxidation Desulfurization of Copper Slags#0183;The study of copper slag has attracted the attention of scholars from both China and around the world.But few have paid attention to its applications in the simultaneous removal of SO 2 and NO x in wet flue gas desulfurization (WFGD),becasue WFGD technique is inappropriate for directly treating NO x owing to the low solubility of NO.This work aims toSimultaneous Absorption of NOx and SO2 Using Magnesia To achieve simultaneous removal of NOx and SO2 in flue gas,an effective technology combined with ozone oxidation was explored in this paper.The simulated flue gas was initially oxidized by ozone (O3),turning NO into NO2 or N2O5,and then absorbed by alkaline slurries to achieve simultaneous removal of NOx and SO2.It was found that the MgO slurry was a suitable
Jan 15,2019 Smelting Oxidation Desulfurization of Copper Slags#0183;Abstract A method for refining sulfidic copper concentrate includes feeding sulfidic copper concentrate and oxygen-bearing reaction gas and slag forming material into a reaction shaft of a suspension smelting furnace,collecting slag and blister copper in a settler of the suspension smelting furnace to form a blister layer containing blister copper and a slag layer,and discharging slagPhotocatalytic Oxidation of SO2 from Flue Gas in the Copper slag is a byproduct obtained during the matte smelting and contains magnesium,iron oxide,and silica and copper slag catalysts are cheaper than nickel-based catalysts and non toxic .In this sense,copper slag is an important co-product of the metallurgy industry that copper slag is mainly composed of Ferro silicate and magnetite Oxygen Pyrometallurgy at Copper Cliff - TMS57 In 1896,Oliver Garretson described a logical process for continuous copper smelting,converting,and slag cleanup,but it remained in two dimensions.58 In 1968,Howard Worner described his WORCRA concepts,which seek to maximize energy conservation by direct smelting-converting in one furnace in which both smelting,dispersed-phase
Use of lances for charging and blowing increases rates of smelting and oxidation and simplifies design and maintenance.Top blowing offers the advantage of introducing oxygen or fuel oilthrough the lances when necessary.Matte and slag produced in the smelting unit continuously flow to the slag cleaning furnace as an emulsion.Off-gas Treatment in Copper Scrap Recycling Industry Off-gas in copper scrap recycling is mainly comes from the melting and refining furance.It is mainly treated by combination of gravity sedimentation,cyclone dust collector and pulse-type baghouse.The sulfur dioxide generated needs to be washed by scrubber where the alkaline solution is used for desulfurization.Method of operating in-bath smelting reduction furnace We claim 1.In a method of operating an in-bath smelting reduction furnace in the presence of slag wherein oxygen is blown in from a top lance and agitation gas is bubbled through tuyeres located below a metal bath surface,the improvement which comprises controlling the amount of slag present at a weight per unit area of the bath of not less than 2000 kg/m 2.
Li et al.[ 30] studied the process the smelting oxidation-reduction process of copper slags with air blowing.And results show that the sulfur content can be reduced from 0.52 wt.% to less than 0.01 wt.% with this method.METALLURGICAL USES FLUXES FOR METALLURGYIn copper smelting,an acid slag practice is used,and silica is added for repair of refractories in some parts of the smelting furnaces (Anderson,1961,Fowler,196 1).The slag formed in one operation can also serve as a flux in another.Slags formed inMETALLURGICAL USES FLUXES FOR METALLURGYIn copper smelting,an acid slag practice is used,and silica is added for repair of refractories in some parts of the smelting furnaces (Anderson,1961,Fowler,196 1).The slag formed in one operation can also serve as a flux in another.Slags formed in
8% for slags,10% for limestone,and 8% for coke.The processing capacity of the blast furnace ranges from 20 to 80 metric tons per day (tpd).Newer secondary recovery plants use lead paste desulfurization to reduce sulfur dioxide emissions and generation of waste sludge dur-ing smelting.Battery paste containing lead sul-Lead and Zinc Smelting - IFC8% for slags,10% for limestone,and 8% for coke.The processing capacity of the blast furnace ranges from 20 to 80 metric tons per day (tpd).Newer secondary recovery plants use lead paste desulfurization to reduce sulfur dioxide emissions and generation of waste sludge dur-ing smelting.Battery paste containing lead sul-Efficient Synchronous Extraction of Nickel,Copper,and Jun 18,2020 Smelting Oxidation Desulfurization of Copper Slags#0183;Electrochemical Codesulfurization-deoxidation of lowgrade nickelcopper matte in molten salts.Journal of The Electrochemical Society 165 ,E578E583 (2018).CAS Article Google Scholar
Using ladle slag,ferrovanadium smelting slag as well as metallurgical auxiliary materials as raw materials,the converter slag with SiO2 content of 11.3% to 2.8%,Al2O3 content of 3.3% to 19.4% were prepared.The melting characteristics of slag were measured,at 1600 Smelting Oxidation Desulfurization of Copper Slags#176;C both dephosphorization and desulfurization tests of slag were conducted in atmosphere furnace.Dongxing WANG Engineer Doctor of Engineering Wastes as Resourcesrecycling and reuse of spent lithium-ion battery chemical reaction engineeringCopper smelting process - Mitsubishi Materials CorporationFIG.1 is a schematic cross-sectional view of a continuous copper smelting apparatus used conventionally; FIG.2 is a flow diagram showing a conventional copper smelting process; and .FIG.3 is a view similar to FIG.2,but showing a continuous copper smelting process in accordance with the present invention.
of copper concentrate and synthetic slag was contacted at 1300 Smelting Oxidation Desulfurization of Copper Slags#176;C,and quenched after short time intervals.With this technique,the sequences and reaction paths occurring between reacting concentrate,flux,matte,and slag can be evaluated.1.2 Copper Matte-Slag Interactions in Flash Smelting In general,copper matte smelting can be describedControl of Sulfur Dioxide Emissions From Copper Smelters Equipment 12 a.Steam Oxidation 12 b.Desulfurization 18 3.Analytical Methods 19 4. -2- INTRODUCTION The conventional processes for smelting copper sulfide ores and con- centrates involve successive steps or combinations of roasting in air to remove part of the sulfur,melting and iron slagging in reverberatory furnaces to yield fused CN101762157B - Metallurgical furnace - Google PatentsMetallurgical furnace is the metallurgical industry equipment of using always,for example smelting furnace,flue gas stove etc.Smelting furnace is widely used for the melting of non-ferrous metal; In the process of melting; In order to reclaim the waste heat of smelting furnace effectively,waste heat boiler is set above smelting furnace
Oxidation blast furnace smelting of copper sulfide ores is designed to produce copper matte and remove barren rock with the slag,as well as to oxidize a portion of the sulfur of the sulfides and remove it as sulfuric anhydride; two variants of the process are pyritic and semipyritic smelting.Copper-sulfur blast furnace smelting with the Alternative Reduction of Copper Matte in Reductionnitrogen to reduce Cu in copper slag.11,12) Kawy and Ahmed using reflection furnace to achieve smelting and recycling of copper anode,the cathode and the residual.13) Zhou X.used copper slag to produce weathering resistant steel.14) By comparing contents of main component in the stainless steel and copper slag,it is known that we canAlternative Reduction of Copper Matte in Reduction Process 1.Introduction.At present,almost 2.2 t copper slag are produced while 1 t copper produced.1) The cumulative stockpiling of copper slag has been up to 250 million tons.Plenty of solid wastes brought serious damages to environment.2) With the continuous development of copper smelting technology,the smelting intensity and matte grade increasing,matte in copper slag
Jan 28,2021 Smelting Oxidation Desulfurization of Copper Slags#0183;The results of copper-nickel smelting slag after grinding are shown in Fig.1 a.As can be seen from the figure,the smelting slag is mainly composed of fayalite and a small amount of calcium silicate hydrate.The X-ray fluorescence (XRF) analysis of the copper-nickel smelting slag are shown in Fig.1 b.A new expansion material used for roof-contacted filling It also proves that coppernickel smelting slag can be used in expansion material.At the same time,the utilization rate of the coppernickel smelting slag of this formula can reach 70% A Radiometric Technique for Monitoring the Desulfurization Jan 27,2021 Smelting Oxidation Desulfurization of Copper Slags#0183;In the pyrometallurgical processes,there are sub-stages in which minerals are subject to chemical reactions such as oxidation and desulfurization with the purpose of increasing their purity.The industries of iron,steel,copper,lead,nickel,and zinc are widely known examples in which sulfur and oxygen need to be removed for obtaining the
12.6 Primary Lead Smelting 12.6.1 General15 Lead is found naturally as a sulfide ore containing small amounts of copper,iron,zinc,precious metals,and other trace elements.The lead in this ore,typically after being concentrated at or near the mine (see Section 12.18),is processed into metallurgical lead at 4 facilities in the U.S.1.Introduction1 Rosell Smelting Oxidation Desulfurization of Copper Slags#243; A.Mart Smelting Oxidation Desulfurization of Copper Slags#237;nez J.Barrios P.Carrillo F.Desulfurization rate during the copper blow in a peirce-smith converter Metallurgical and Materials Transactions B 2008 39 1 16 22 10.1007/s11663-007-9113-7 2 Ajersch F.Toguri J.M.Oxidation rates of copper and liquid copper sulfides Metallurgical Transactions 1972 3 2187 2193 3 Alyaser A.H 1,2 1,3,1,2 - MDPIthe e ect of desulfurization with Fe2O3 on the smelting oxidation-reduction process of nickel converter slag.The Fe 2 O 3 was used to remove the sulfur from the molten slag with sulfur content being 1.53 wt.%.
the e ect of desulfurization with Fe2O3 on the smelting oxidation-reduction process of nickel converter slag.The Fe 2 O 3 was used to remove the sulfur from the molten slag with sulfur content being 1.53 wt.%.(PDF) Looping Sulfide Oxidation Process for Anode Copper This process uses copper oxide in conjunction with air for the desulfurization of copper and chalcopyrite concentrates.Copper oxide is regenerated in a flash type furnace and then looped back for the oxidation of the copper concentrate.
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