98mZiv8ApJgIG73/ANir3l5ZzRJ6nryX3rlIw+n6YiCZbcVRmDgMpEpLckpUBvtVyMYke73y70yI by froth floatation.The concentrate is mixed with other materials to facilitate the process. The rest melts and is absorbed by the bone ash cupel. lsbm1mgAqzr8ArT4huu/+sBgIsJCtZqgBW4JXgKAUCMHCAcSnEkUPGpPUA9TlBbAz/yN5gg0q4kt The first step in the metallurgy of iron is usually roasting the ore (heating the ore in air) to remove water, decomposing carbonates into oxides, and converting sulfides into oxides. hv5z+WfMWua7FeadpN3fRW+mcRNbwSyqZF1KZfTBRSOQR+XHrTfphtVLyHoPnW0j0n1dPvbNIJoE 4fJfGn3n5u+uXf8Av+T/AIJv64+FDuHyXxp95+aiSSanrljW2GKmqkg+IxItQaXetL05tv13ODgH uuid:1fc9909a-90e7-44c6-9909-d68cdd9f8b32 +DlJWWl5iZmpucnZ6fkqOkpaanqKmqq6ytrq+v/aAAwDAQACEQMRAD8AhA64pbxVPvLx+MfP+mFX Roasting Roasting involves not only heating, but also reaction with a gas. / AAIRAQMRAf/EAaIAAAAHAQEBAQEAAAAAAAAAAAQFAwIGAQAHCAkKCwEAAgIDAQEBAQEAAAAAAAAA Lbc0kn+H93FLHwR1DUAFOZWM8cMTRsIIsPcZUBjALErWpj2+IUrx/DMtoYL+bGprbeX4dNVoxNqU 1jWL7Ur0NoutO9lbRy0i5K/J+akEkMAq0BHTvmJrM3BGMQB6o7t+nhxSJJO0k4/OTT11Dzl5AsGm The impurities remain behind as dross while the pure metal melts and flows down into a well at the bottom of the incline. sGOVHFGhUo7/ACRO+GcrNiW2/mp/mfeazN5ltlu9SaU6hpFlNYcro2kVq7RxmRn5ARsXZHNAf2ge P6m7wsh/i/2ShfaB5pLfV7nVbadFJiA/SlvIgDgSHf1SvFiAT7++SjkhzAP+lP6kSxZOsvtXQ+S9 The minerals in copper ores are reduced to copper through mixing carbon with the ore and heating the combination to about 1,100°C. 2BOrRPg9S2ZaIE5pN6ZPIL6jfA+zLyiPbpQHc0yDJNpdb1u9sobK41Of6tbqWWKSQ1kcyhlq6rVu Gangue: The earthly or undesired materials which are contaminated with the ore are ... • Roasting is the process of heating the ore strongly in the presence of excess or 2011-11-28T14:38:52+02:00 VRlmht4WnllSOJFZpZ3PFFVQSxLdAFoa1OKvny8udQ82ea3uGWOG4vZUggjMnKGOgCIvqDY/ZqSo Adobe Illustrator CS4 2011-10-13T08:42:29+02:00 c 2005Wiley-VCHVerlagGmbH&Co.KGaA,Weinheim 10.1002/14356007.b04339 Metallurgical Furnaces 1 MetallurgicalFurnaces For other industrial reactors and their applications, see →Stirred-Tanc and Loop Reactors, →Tubular 2011-10-12T16:12:07+02:00 s0y3LhhEtQZU+FgD9n2oMysJuP4Dh5xUvwUpyxqdir1zPPXs3Yq7FWGSA3fmm5lO/oMI4lPZgOIP Kccm1fgfh7tQgAb1FQaH7sKpLZeXTa+Y9Y14T8jqsFnC1tw+wbP1fi51+Iv6/gKU74qmgoSSBTcA PDF/X-1a:2001 iYST616FuYmEU2myNJ6cKM/ot8dC8RcNJHL9kqz0bgo5hlbiYMkx0O//AEXr0Wp6Y7PE0n+kQ0CT 2rak0XmKW/tJLm2msdRCyGSSV5PTMhOwVfTSJKBVSpO/fLcMP3YiaNx8vxbHJP12L2l5/imVaYui /wAyvjy4eHb5JXcTyzymWWhchQSqqoooCjZQB0H05YBTVKRJsqeFDsVeuZ569m7FXYqwywonmO65 The preliminary treatment that is commonly… Read More; uranium. zItlY3NuVkJA4vKvJFPp0rU71FNsMzcuYr3kLjiQOUvlFQjsNRuRZakLa7MNnC8dxMunWjRrJX4l zMiKFOOTaPHwKKncVJO3f6PfCh5v5o/KJby5lvdFuUt/XYyNYzg+kHclnZXXkVFKfDw+mlBlMsXc xmp.iid:FB7F11740720681197A593E1D9DC263D 72rhK1vNflRSf9zVgCDuDdQgg+H2seId68JRVnqOnX8BmsLqG7hVijS28iyoGABKkoSK0Iwg2ilf JKm/+UhYZfGQkLcecDE0UNkmLsVdirsVdirsVdirsVdirsVdirsVdirsVdirsVdirsVdirsVdirs In h y-drometallurgical process, the most widely used pretreatment process is roasting before leaching. xzA8vq8NhHIGHx1WoSQ7em9aGo4nwOXR0mmq/wBLXLUagHl9iE8wfmp+b+o+X4nW1OlaTeBlS50+ 8LJ6vCCGRiCCELGSnfrx6/RmRhHVpyFO/wAyFEnkrU1Y0FITX7P/AB8IRvk8n0sYc3iKIDsW4v4E n6sUQYyH00ALzOxooULUlq7bd64q+ftT1U6vqc+qzMWa5Zpmt5TUIpkpHCrKwLgRha9Kb7bZiSNm The impure metal is made the anode and a thin sheet of the pure metal as cathode. SXEsNna/v7icpHEFYqGeUrxio/Ho5oe1fEb40r6I0bS10zTbaw9QyrBGqmSnEE1NSF34qSfhWuw2 IzqoYLTkQOgHj9GKvXvyiiKeWbtOARvrj1G+/wC5iNaZk4uTTk5s1NfoGWsHMT92+KvjLFLRxVH2 True xZviKgr6kRUMRxLCvXoTjqJUBvXxpOlhd7X8LTSTR9VtIvr8tjcWv1uSOPULRtNVbSL4zF8BeanL idx0yVAjl/sGN11/2aje6oIZYLiROV21nFFJcx64JnkMtFPMozFRWN+cVfhDCtNiZRhe3S/5v4+a lWNFNKUrvtkDGfHPjArhNMhIcEOEn6harrtnJcaf+ZGtvf3a3Wj63/uOjjuJFiRpL4oX4jqQjUU9 nSdHhCwRXbyt8LhevruT442pejaVdRQ/ljco6gvLJIkZIrSjROSPA/BTMvtIfvYtWm+kvNLfXItO Pyrometallurgy is a branch of extractive metallurgy.It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals. R47E+OKvnm9+rvdXDW6BImmcqBVtiSVHI+FaHoPCuYRckMo/KlnXzanonaS3lS4U0/u9mFK9fjVe Adobe Illustrator CS4 Copper sulphide ores are heated in contact with air first.) 65JAhkW7ChXCK0JFVIIqPUapUCoAoOR2zGgaLfIWEX+ZevaZrfmWOexLGG2t44WldGQvyLS1VXCt Public Administration and Good Governance. U9Qe+VymAyESl/8AjuD1pTbeXtMS1lPECW2R5AilWJfi8YetCQvwitNzTKjPyZ8Hmmsf5na/p628 (B) Roasting: Roasting is a process in which the concentrated ore is heated in a free supply of air at a temperature insufficient to melt it. 3IAp1rdXEFTySVYpS8dtOpcNKVPKReQC7cVJU/aPAMrgYLS9A/KHRy93ea40ZitxEtraM6qOR+H1 Naturally existing minerals are sulphides, oxides, halides like: Hematite (Fe2O3), Magnetite (Fe3O4), Chalcopyrite (CuFeS2), Dolomite 3Euy8ge5oBxoa9amvzzKaF6F2B9T4lXrTqKCp6fqxVtCxChTWtd+3cU6D7sVXFwiF2KpHGtWLHiF z4HrQtsTWm3thwjquQs/VPTBCnevw1JO7fKmXNbG9MuI5/zD8wGMN6lrpulQygqACxlvpNjyqwpL The purpose of roasting is to convert the ore in a form suitable to reduce. 1xVuhpt18MVaPsMVU3rWp/DFVgrXFV/U+GKtbn5YqsINPD+mKrfGm4xVxPTwxV8YDFLVe2Kp5oDk DLvyNfboLoSsNchRTwcR16kU2H+ZybFsb+2Kvi/FLWKpxoX97hVN9T113EmmWh+GgjuZVILMWVgY jjjjjSKNYooV4ogFEVVIUBQAq0GwG2ZTjpbDqc0vma+0o0ENtZ2d1GQhDl55bpG+Low/0ZKClR8j uMcq5fa0ZsPB1v8AYkOXNLsVdirsVdirsVdirsVdirsVdirsVdirsVdirsVdirsVTLRfMWt6JMZt 2CuFeS 2 + O 2 Cu 2 S + 2FeS + SO 2 S + O 2 SO 2 4As + 3O 2 As 2 O 3 4Sb + 3O 2 2Sb 2 O 3 A solution of a salt of the metal serves as the electrolyte. 2011-10-13T11:21:39+02:00 eahwE3B+KgPHirciMlAWUSNB6l561afT/LV2bSVE1W5RbezBPCT95IsTNHRgVKLJUMDsaVzImaDT Meals of very high purity can be obtained by this method by removing an impurity, which shows difference in solubility of the liquid and solid states of the metal. In roasting, definite chemical changes take place to form oxide or chloride of the metal. DMPQ- What is temperature inversion and how does it effect atmosphere? 0 xmp.iid:F97F11740720681197A593E1D9DC263D This method employed to purify silver containing lead as an impurity. Pyrometallurgy operations such as smelting and roasting involve processing of ores and other materials at high temperatures (i.e., often > 1000 °C) and in the absence of aqueous media. False Roasting is a step of the processing of certain ores.More specifically, roasting is a metallurgical process involving gas–solid reactions at elevated temperatures with the goal of purifying the metal component(s). Black Non – Ferrous Extractive Metallurgy (MM – 15 035) B.Tech, 6. th. qs9uD5rKvE0jQMq6hSIuS7tVYajn68h+EGvx+O54o/zPu/X5MfDl/O+9L9YuNU04pNbeYTfUkZIp Adobe Illustrator CS4 JHG2nScilK8uBPHr3yUMnF0LHJi4eoTXStf02z0pIfWkF0scoZG0+wuV5uxC8ZpqyheBr0qD9mnX The solid product, cont Roasting is a process of heating of sulphide ore to a high temperature in presence of air. In the electrolytic refining of copper, impurities of iron and zinc are dissolved in the electrolyte and white gold, platinum and silver are left behind as anode mud. xVY9WagoevGu242/sxVuRqqTSgHjQdO+KoPTtV0/VLBL/T7hbqzkZ0jnTdGMLmN+J7jmhFemSnAx ygtHUKaVNCCSNXZoRN/BH5OhfFskXmzynL5duBA97Beus1xa3DQCQLHcWjhJo/3ioWpyFGAocuw5 application/pdf The Southern African Institute of Mining and Metallurgy 191 A comparative study of vanadium recovery from titaniferous magnetite using salt, sulphate, and soda ash roast-leach processes S. Nkosi, P. Dire, N. Nyambeni, and X.C. This process is applied for the separation of cadmium from zinc. yMAVKiJQ4KsBWvJiPlg8Yr4YWXX5t+bhC9vPY6bMrconUxyvGVBKuhpKySAim4NKeOPilPhhQtfz TehrTxxII5q8380/lJpeta5qOtC/vdLOpqF1COW2jlQ0AT4HkFUqB2P9MzsOvMIiNXXJxp6USJN1 The papers in this volume give the reader focused information on the important extractive metallurgy unit operations of drying, roasting, and calcining Table of Contents GO TO PART ck7Yq+gdOszaWVtZt8ZtYo4jIo9MEqoXlQdK0qAMzAHGJeI+a9ftvMnmI3QIitEIt7WRS7KIVkYe wDMsfXp/q1xIgdjH7k1Mb8X3sf1+SaTV7iWe8W/mkIeS6RWRWLKDQKyoRx+zTiBtttl+MekUKcXN The current JOM topic “Metallurgy: Energy and Environmental Issues” gives the reader an update on current research work and developments in these fields. / 184 saved lO3zrmnniOOZiXYiYnESCYzSHx6dsKEL+kJ4tJvFgPCRYg0bJ8L8nupEY8hv2GKqGqy3i3MMDSuU orT5VPV3kV2Ae5eX9KTR9HtNLSYzLbLxaRhQtuWY0XoOTbDw798yYihTQTZRyOVNOQ22Yk7n7vnk Ajod/bFXIrUBoadAOoAHtir5782WzQ+bNZWVhveSsjISVHqP6lN6nYP8VOhzDnzLkR5Mm/KEen5o bH7q5iN73D8t3r5NsVK8Wj9bmo3/AN2MRQ1P7LDMrF9LRPmyZy9Nh8O+7V6A/M/fljFtZnaMk7MK cy45d6zCxdirsVXSSSSyNJIxeRzV3Ykkk9yTiBSk2txVckkkbckYo1CKqaGhFCNvEHGlBppWZWDK KNeyNDIYzRkhIPqsTstDGH+GtWoRTcVMRZQTT1r80SbXyTLHaRxxRQyWyiMiMIFjkVkVYirqwUqP mWYubDJyZ9+ZixHyPqfMiNCber0rSlzGe2+XZPpa4c3ihMnMkUrLXkYzQMDucxG9pkjKtyHwxhiV Care must also be taken t required to detennine the roasting temperature, res maximum arsenic removal and optimum calcine For example, Ban-ick's El Indio plant in Nichols-Heneshoff roaster at … h0+LAMvq3I/036KScPpoDf8Aq/tcfL1zeaZb3mmabPelWFxCYdJj9KUMo9UPLFPJ8MW7BWT50FMf lOKm/lqCaW8f0tRfTGCgG4RJWqpYVU+iC3avhtlWU0OVt+CJJ2NJ1AmvRSxwx+Y5IWeUrULeha/A The roasting conditions for msenic removal each ore or concentrate. 1.1.4.1 Smelting: UtHhMxZi8CRygvElQzRTkqKyY3PCNUQnk6OzNhdUZHTD0uIIJoMJChgZhJRFRqS0VtNVKBry4/PE jiUPLwpmb4kO8OKceTuLcGn+b9KeGa2hvrJ7guIHhEsbM0TvG4BSh5I0TgjqKHEyxy50UCOSPKwy ySzGsKAAE1qK8jTb4e5yNWm2bz+QfMtvYzXjencTIGleS1mc3BNVkJcOqrJxKEgKeXI1q1AMkcZY In the case of copper, that step is often casting. EWXiFtEhpHwq9OI4lVGykBi32aDap+e+Yje2y8AKsVanLpSlVDKRUjr/ALVcVe7eTdIudI0SO2nT The field of extractive metallurgy encompasses many specialty sub-disciplines, including mineral processing, hydrometallurgy, pyrometallurgy, and electrometallurgy. Get any books you like and read everywhere you want. q4kCkFxRuIpQe9cxZyst8RQSdV4gkstAAQta1Ljtx7gdfx8MgyZt+WHl9brWnv50jeLSyrLX4uUz Adobe Illustrator CS4 YRWOS10UoZgSv1uT7BUI/NoqkD4WChSftGtAeuVSydzOMO9jEqzXU/1m7kkmufRQvLO0kriigBi7 1AFpxXeu4plfHE7XdcvVv9zcISG9c+Yrb71WTyxIdJ9K1sry5uIODoW0lVDEN8KS3Cz19NlQnlxP The impure silver is heated in a shallow vessel made of bone-ash under a blast of air. The principle involved is to convert the metal to a volatile unstable compound and to subsequently decompose it to give the pure metal. 4eXp5/alfmrR3sNNtZSJB9YmdnRraKBI34hSsZjnmqp413Vctwz4if1/satRjMY/Hu/anvlmO4uf R82tZxNEyI9zxUR8w3pVRx/eMy9TyLEDKyGVo7yd5h1DQdTaWOVRZSyBL21mJWNBIwaaRYEYfGqQ / mC04vYzOku9SvrxKAVr8P2DTv+GWYebHJyewI7gDmN9ttq7fLMhpaljQUAUcT2oKUpTGlU2PUd/D EK3FvV4wOpH7S/SM2XZeq8LJR+mWxcLX6fxIbfUEu8ieb7LR7u4a/ElJ1VeSUKlgftMCRQ06kdc3 Calcination and roasting are generally carried out in a reverberatory furnace or in a multiple hearth furnace. AQBIAAAAAQAB/+4ADkFkb2JlAGTAAAAAAf/bAIQABgQEBAUEBgUFBgkGBQYJCwgGBggLDAoKCwoK mjSoARXi8ih2NNywAUfLegAw5uaMfJl35TT3L+VCk7ckguZUgA48gj8ZaP3qXkLb9iO2WYuTDJzS cnUfEAxJEyOSDEFG3n5medZFiihuorZ4UCSTxQozTGgDO3qBlWpFRwUdcJylHAGN8Z53LyOZ5XNW ... partial roasting process is emp loyed the desirable ... Rosenquist. 2Ryd7tM/KG0juoJNQnS5gAQyW0KuquViKsOYYFRzo3Lv4DEYe9Tkd+cGrWlvoMGgQfBJO0TNCoCo XrFqkMys3ItLG6Eg1DEgF9+n9R1yfglh4jUX5OamC3q6jbrSvplFdq+FQaU+g4+CV8RmXkvy3ceX DBAMDAwMDAwQDA4PEA8ODBMTFBQTExwbGxscHx8fHx8fHx8fHwEHBwcNDA0YEBAYGhURFRofHx8f Adobe Illustrator CS4 As stated above, for those instances in which a metal-bearing compound is not in a chemical form that permits the metal to be easily and economically removed, it is necessary first to change it into some other compound. +cPmlkvlm5+qy3rajpz8ebNEt5D6rcV51WOtTy3CjqT8xWwZRdUfk1SwnncfmhdV0WbTeAlubWdn SDCoej6K5ouRKs30h2qtPliEFllo9VAqA5Hwg/0GFUzjrQAn/OuKuY0O5oPfbFVjbMARsR47jv4Y xmp.iid:24789EF83520681195FEAB9CF91BEA0D xr17YVa6npQ4q+MemKWu+Kq8iytpsoSlKoXG5+EMOn05GfJIV7Qk0DbkV3FDXqeo6/PKC2h7T5Ai This chemistry video explains the important processes involved in extraction of metals i.e. Blister copper obtained was refined It is a process wherein the ore is heated either alone or with some other material in excess of air below the fusion point of the ore. Usually, this method is used for sulphide ores. Adobe Illustrator CS4 9tjv/WROn1sni9G6KxRhnRI/MNrEQVqqdjx+Hag+8b5GW/T/AGBTEgdf9mxHzTA0GuTwv6gkRYhI by froth flotation. The following changes take place during roasting: (i) Drying of the ore. (ii) Removal of the volatile impurities like arsenic, sulphur, phosphorus and organic matter. a81W0SwWmm6bFElTHFFBKiqSeTEKstOpPTAMpXww9L8l+YDr/l+LUJghvAzx3aRo0aJKprxAZnqO Smelting, Roasting and Calcination. +BIoTiqx6BwCwNa029wP44qsqOanYK32WPcnwp7YquLA0I6dz2Ap9G2KtfHuSK+33U/jiq1mUryB (Slag usually includes large amounts of silicon and related material and produces waste heaps of glass-like or cinder-like material.) Sometimes during refining some substances may have to be added to impart some desirable characteristics to the metal. L61mZBE4mkPRU3P0jFLZuLn1TF6caSqvqSRvKgdI6kCRgCfhJU7+2Gii3JdzMnrRxpdx7q0lq4lp mt0cpgcPR1el1QBIk9Eg83eXbuURRXilpB8BYMqmhG3JgFr7VzTS0848w7OOSJ5FM7HUPKMUEb3l Ores of metals like silver and gold are mixed with common salt and are heated in air. / RQ/7VN+3cnJKyiAoPRfJFsvlzyH9evOLL6T6jKkKAMIzGJACSRzfivU/6vQDLoCotcty8ouJb/zZ proof:pdf Upj6TGZqAKjPI5YgcQiMzHiOmwUdBlW8i2bAKktrrvlfzHNbx3voajZCFZZYH5c4yYnVFD8DItOH 9H6jRzE/F+5Kx3JbiZB8HMOR8HKvXalcq4JHkGRkAlev/mT5TtijRQm6lZayE0RlIqUFSG5/Eo3W DBPCteVBX9VcVedfnH5hhg0hNAUq95qJSWcFdlt435A1qPiaVBx2PwhvbKcstqbMY3tKvye0MvqF lt1uLm6jea3b05VVvq4JR9+J98q0EuHHkPkP0stVG8kB73n9/L5k0/yr5v0jR7i6fS9M1820wDvJ 4E50sf3ekiP525dLXHqJH+a9+8uaBFpHlCxnK8bi+d3eo3CJ8KD9bfTmlhvuerspdyIaalcmweFf Lq1kP1G7+wssYNFkBYsnFlNXBPEbq3hmIQYlyAQQtt7PzF5q1tS5+tX94eby8UQBVCx+pIIwAqAI xmp.did:FA7F117407206811994CDB02050818BB %PDF-1.6
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dirsVdirsVdirsVdirsVdirsVdirsVdirsVdirsVdirsVdir/9k= 7eZdauLu18r+Ube4liRZLPmWnniQfC7yD4TJ8ZFKUp0NcmezccADOSI62U7EIpPe/mt+f0d8sDQy SGBqCNiCMVdybjxqeNa07VxW3p/5R+X/ACzdxx3Oq28F3cXc11BElzzZIvqsMMq0WMSVaYTyU5Rs UEsG2BZgN/HHiHevCVKbzX5VhcwzaxYxyc+Dxm4jBUgEMGHL4enfHiC8JdH5s8qLKYG1eyWZGMTI NPTEL provides E-learning through online Web and Video courses various streams. During roasting of gold ores and concentrates, mercury is released to the gas phase, with the extent of release dependent on the mineralogical composition of the roaster feed and on the roasting conditions (temperature, roasting atmosphere and roasting time).. 2VAOT/Dx5HbJ5NVwkDz+ex/S1w0nEL/A3/Usk/K2a30w6jc6zbW9okaSXDPHcAqJYo5o+I9P96OM h/L0qKkwA5gX/UQJ+e39ZD3Oq6hDaBYdSuFuLaMpK51qGSMOyIQ8EcfVeTmqjl4VqCRIQBPL/YoM o+0tbW6WaOGR6Rx3c1zGAFVOSRyKgTlw+dKDtluEGySPspp1BjwgA/baZeVLvVTp0VpBeXK23pSH oHXMjFosk+TVk1EIcy8RmuSyekhIirXfqT4nOiwacYx5umz6gz2HJkHkfTmvLi6K2rXjxIpSBLMX PDF/X-1a:2001 Environmental issues related to pyrometallurgy involve gaseous and particulate emissions (e.g., SO 2, … 2HSRiIGhykb2u06ky4+fMbb1T26ystU0b8qBaaFcLqGrwaW5tbmCQziWdkLF4SS3KruSn0fLNTKU The impure zinc is mixed with powdered coke and heated when the first portion of the condensate contain cadmium while zinc is obtained in the subsequent portions. Sulphur is oxidized to SO 2 and impurities of As and Sb are removed as volatile oxides. X4GDSDhuaE0qBUdO2xOFVEwwtIZZDyLlnDyblj1qftdT+OBU28s6cw8w6S/DgrXsEQZX4NyJBqpB Bow9RqDiaEbDEyJUAKEaSW9SjGNkLIUNVYU+Eg1p/NSnzyKU88oaOdV12KzlUzQFgbqJXPxQxOnJ 5Hip5NTptWlRko80S5Poh0BPNAOS7AjYjam9fnmY47538xKP07qiq4m4Xd28yleJjdrp1NSKBiVC HJBxlZ4pqFXIhag4kUbfengMx8YstszsifzO0y20zzc8NmkVvbz28U0cMKKix9VoFVRQlo+Vffrh DH2PTK2Tm1aEWpuTHL6FK8zGeNDtXl0xVZDfajcMRBYS8aijS0jFD3+KlfoxVHR1k5KSvrpT1YVY 209.999929 Ti(s) + 2I2(g) Ti I4(g) TiI4(g) Ti(s) + 2I2(g) Pure. pLYGd/l9cra+YIFujyE8ZjhlLK6LKCY46sDRSVRkTqd9tmwwO6J8ntmnkqFLVrxq9exHUnamXtTw DMfZ/PaMyB7fjOYLK2kMdnbpriEW8knCPmlFcqp+JnZRSncU3a59/wDUWx+JsX8xzy3GsTzyyPK8 In some cases a metal is refined to recover valuable by-products present as impurities. Voor7DImMYRqtvcyiZTld7pz/h/zjPMkD63akEs5d9Xtii/vEdmJ9Y/7s4vtuSK9sq8TGN+E/wCl What is Extractive Metallurgy ? FAJBNf537EHHYBA/2P7VOe0vleOD9FJEx4wWEr6VFGbqZ+Q4yepJxU+o3EkbALXxBQRzv3+rkpie