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  • PROCESS FOR LEACHING METAL SULFIDES WITH
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    nbsp 0183 32 295 The method of any one of claims 244 to 294 wherein ferric ions are used to oxidize the metal sulfide 296 The method of claim 295 wherein the ferric ions are generated at least in part by bacteria 297 The method of any one...

  • June 23 2020 Karen Kennah Laurel Refinery
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    nbsp 0183 32 Steve Bullock Governor I Shaun McGrath Director I P O Box 200901 I Helena MT 59620-0901 I 406 444-2544 I deq mt go June 23 2020 Karen Kennah CHS Inc Laurel Refinery P O Box 909 The Department of Environmental Quality Department...

  • Fabrication of Fe3O4 and graphitized porous biochar
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    nbsp 0183 32 Subsequently the dried Myriophyllum aquaticum was pulverized by a small crusher 1880 W for 10 min and then was passed through a 60-mesh sieve to obtain the final biomass powder These powders were pyrolyzed in a tube furnace at 400 176 C for 2 h under N 2 atmosphere and the obtained black powders were washed respectively with 1 M KOH and 2 M HCl to remove silicate...

  • Pyrometallurgy
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    nbsp 0183 32 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 1 Pyrometallurgical treatment may produce products able to be sold such as pure metals or...

  • Microalgae photobioreactors for gaseous contaminants
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    nbsp 0183 32 The electron is finally passed in photosystem I to oxidize P-700 Nimir-Eltyb and Zhou 2018 Energy is formed when additional photons of light excites P-700 in photosystem I When P-700 absorbs energy an electron is excited and ejected leaving P700 in an oxidized state...

  • Urban mining of E
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    nbsp 0183 32 crude crusher and afterward further crushing in a hammer grinder are explicitly used for printed circuit boards II -oxidizing bacteria regenerates the Fe 3 ions from Fe 2 ions by oxidization and then the Fe 3 ions oxidize the metal minerals by itself...

  • Method for Manufacturing Briquettes Containing a Calcium
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    nbsp 0183 32 Oxygen is blown in for a predetermined period of time in order to burn off the carbon and oxidize directly and/or indirectly the phosphorus-containing compounds and silicon During blowing the calcium-magnesium compounds are immersed in the bath of molten metal and dissolve/melt slightly at the interface with the molten metal the calcium-magnesium compounds always floating...

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