{"id":"https://openalex.org/W7204240802","doi":"https://doi.org/10.1016/j.mineng.2026.110796","title":"Investigating the role of Orfom\u00ae D8 in the depression of chalcopyrite in its separation from molybdenite \u2013 application to water types","display_name":"Investigating the role of Orfom\u00ae D8 in the depression of chalcopyrite in its separation from molybdenite \u2013 application to water types","publication_year":2026,"publication_date":"2026-08-26","ids":{"openalex":"https://openalex.org/W7204240802","doi":"https://doi.org/10.1016/j.mineng.2026.110796"},"language":"en","primary_location":{"id":"doi:10.1016/j.mineng.2026.110796","doi":"https://doi.org/10.1016/j.mineng.2026.110796","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.mineng.2026.110796","pdf_url":null,"source":{"id":"https://openalex.org/S181849944","display_name":"Minerals Engineering","issn_l":"0892-6875","issn":["0892-6875","1872-9444"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-a","jufo-3","norway-2","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Minerals Engineering","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://doi.org/10.1016/j.mineng.2026.110796","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5069876541","display_name":"E.E. Chukwuma","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"E.E. Chukwuma","raw_affiliation_strings":["Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada","institution_ids":["https://openalex.org/I5023651"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5121481320","display_name":"Helmi F. Kalahari","orcid":"https://orcid.org/0009-0009-7862-3789","observed_orcids":["https://orcid.org/0009-0009-7862-3789"]},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"H.F. Kalahari","raw_affiliation_strings":["Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada"],"raw_orcid":"https://orcid.org/0009-0009-7862-3789","affiliations":[{"raw_affiliation_string":"Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada","institution_ids":["https://openalex.org/I5023651"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075854815","display_name":"O. C. Chukwuma","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"O.C. Chukwuma","raw_affiliation_strings":["Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada","institution_ids":["https://openalex.org/I5023651"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056264894","display_name":"Mark R. Lepage","orcid":"https://orcid.org/0000-0003-2294-868X","observed_orcids":["https://orcid.org/0000-0003-2294-868X"]},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"M.R. Lepage","raw_affiliation_strings":["Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada"],"raw_orcid":"https://orcid.org/0000-0003-2294-868X","affiliations":[{"raw_affiliation_string":"Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada","institution_ids":["https://openalex.org/I5023651"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062992808","display_name":"Ozan K\u00f6kk\u0131l\u0131\u00e7","orcid":"https://orcid.org/0000-0001-7539-5922","observed_orcids":["https://orcid.org/0000-0001-7539-5922"]},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"O. K\u00f6kk\u0131l\u0131\u00e7","raw_affiliation_strings":["Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada","institution_ids":["https://openalex.org/I5023651"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5084150339","display_name":"Kristian Edmund Waters","orcid":"https://orcid.org/0000-0002-8546-5688","observed_orcids":["https://orcid.org/0000-0002-8546-5688"]},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"K.E. Waters","raw_affiliation_strings":["Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada"],"raw_orcid":"https://orcid.org/0000-0002-8546-5688","affiliations":[{"raw_affiliation_string":"Dept. of Mining & Materials Eng., McGill University, Montreal, Quebec H3A 0C5, Canada","institution_ids":["https://openalex.org/I5023651"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5084150339"],"corresponding_institution_ids":["https://openalex.org/I5023651"],"apc_list":{"value":4220,"currency":"USD","value_usd":4220},"apc_paid":{"value":4220,"currency":"USD","value_usd":4220},"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.55403289,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"249","issue":null,"first_page":"110796","last_page":"110796"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11401","display_name":"Minerals Flotation and Separation Techniques","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11401","display_name":"Minerals Flotation and Separation Techniques","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12282","display_name":"Mineral Processing and Grinding","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11073","display_name":"Metal Extraction and Bioleaching","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/chalcopyrite","display_name":"chalcopyrite","score":0.8690000176429749},{"id":"https://openalex.org/keywords/molybdenite","display_name":"molybdenite","score":0.996999979019165},{"id":"https://openalex.org/keywords/froth-flotation","display_name":"froth flotation","score":0.8629999756813049},{"id":"https://openalex.org/keywords/copper-molybdenum-separation","display_name":"copper-molybdenum separation","score":0.9120000004768372},{"id":"https://openalex.org/keywords/water-chemistry-effects","display_name":"water chemistry effects","score":0.7139999866485596},{"id":"https://openalex.org/keywords/seawater-flotation","display_name":"seawater flotation","score":0.8820000290870667},{"id":"https://openalex.org/keywords/porphyry-copper-deposits","display_name":"porphyry copper deposits","score":0.7519999742507935},{"id":"https://openalex.org/keywords/flotation-process-optimization","display_name":"flotation optimization","score":0.7459999918937683},{"id":"https://openalex.org/keywords/sodium-hydrosulfide","display_name":"sodium hydrosulfide","score":0.7770000100135803}],"concepts":[{"id":"https://openalex.org/C2778188036","wikidata":"https://www.wikidata.org/wiki/Q111044","display_name":"Chalcopyrite","level":3,"score":0.9294999837875366},{"id":"https://openalex.org/C2777025580","wikidata":"https://www.wikidata.org/wiki/Q1976211","display_name":"Depressant","level":2,"score":0.9047999978065491},{"id":"https://openalex.org/C2777949781","wikidata":"https://www.wikidata.org/wiki/Q382994","display_name":"Molybdenite","level":4,"score":0.7233999967575073},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.7210000157356262},{"id":"https://openalex.org/C544778455","wikidata":"https://www.wikidata.org/wiki/Q753","display_name":"Copper","level":2,"score":0.5217999815940857},{"id":"https://openalex.org/C154366045","wikidata":"https://www.wikidata.org/wiki/Q898459","display_name":"Froth flotation","level":2,"score":0.49869999289512634},{"id":"https://openalex.org/C2776821766","wikidata":"https://www.wikidata.org/wiki/Q417615","display_name":"Xanthate","level":2,"score":0.42660000920295715},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.38190001249313354},{"id":"https://openalex.org/C197248824","wikidata":"https://www.wikidata.org/wiki/Q184395","display_name":"Seawater","level":2,"score":0.34540000557899475},{"id":"https://openalex.org/C42360764","wikidata":"https://www.wikidata.org/wiki/Q83588","display_name":"Chemical engineering","level":1,"score":0.34040001034736633},{"id":"https://openalex.org/C107872376","wikidata":"https://www.wikidata.org/wiki/Q321355","display_name":"Environmental chemistry","level":1,"score":0.3147999942302704},{"id":"https://openalex.org/C2779429693","wikidata":"https://www.wikidata.org/wiki/Q274959","display_name":"Distilled water","level":2,"score":0.3000999987125397},{"id":"https://openalex.org/C528095902","wikidata":"https://www.wikidata.org/wiki/Q2283886","display_name":"Pulp and paper industry","level":1,"score":0.28519999980926514},{"id":"https://openalex.org/C179104552","wikidata":"https://www.wikidata.org/wiki/Q11165","display_name":"Inorganic chemistry","level":1,"score":0.2777000069618225},{"id":"https://openalex.org/C544153396","wikidata":"https://www.wikidata.org/wiki/Q11426","display_name":"Metal","level":2,"score":0.2678000032901764},{"id":"https://openalex.org/C3018430610","wikidata":"https://www.wikidata.org/wiki/Q673287","display_name":"Three gorges","level":2,"score":0.2621000111103058},{"id":"https://openalex.org/C518881349","wikidata":"https://www.wikidata.org/wiki/Q682","display_name":"Sulfur","level":2,"score":0.2615000009536743}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/j.mineng.2026.110796","doi":"https://doi.org/10.1016/j.mineng.2026.110796","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.mineng.2026.110796","pdf_url":null,"source":{"id":"https://openalex.org/S181849944","display_name":"Minerals Engineering","issn_l":"0892-6875","issn":["0892-6875","1872-9444"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-a","jufo-3","norway-2","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Minerals Engineering","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1016/j.mineng.2026.110796","doi":"https://doi.org/10.1016/j.mineng.2026.110796","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.mineng.2026.110796","pdf_url":null,"source":{"id":"https://openalex.org/S181849944","display_name":"Minerals Engineering","issn_l":"0892-6875","issn":["0892-6875","1872-9444"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-a","jufo-3","norway-2","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Minerals Engineering","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.6618000268936157,"display_name":"Clean water and sanitation","id":"https://metadata.un.org/sdg/6"}],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G732445768","display_name":null,"funder_award_id":"ALLRP 590660-23","funder_id":"https://openalex.org/F4320334593","funder_display_name":"Natural Sciences and Engineering Research Council of Canada"}],"funders":[{"id":"https://openalex.org/F4320334593","display_name":"Natural Sciences and Engineering Research Council of Canada","ror":"https://ror.org/01h531d29"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":54,"referenced_works":["https://openalex.org/W1804478614","https://openalex.org/W1983864574","https://openalex.org/W1997914364","https://openalex.org/W1998108927","https://openalex.org/W1999313233","https://openalex.org/W2006011521","https://openalex.org/W2018686543","https://openalex.org/W2019518751","https://openalex.org/W2030335531","https://openalex.org/W2034113255","https://openalex.org/W2034407575","https://openalex.org/W2040440162","https://openalex.org/W2045479559","https://openalex.org/W2045978651","https://openalex.org/W2052843887","https://openalex.org/W2055033762","https://openalex.org/W2069375851","https://openalex.org/W2074619448","https://openalex.org/W2089092018","https://openalex.org/W2121736248","https://openalex.org/W2143788335","https://openalex.org/W2468380256","https://openalex.org/W2505545842","https://openalex.org/W2514769457","https://openalex.org/W2767583015","https://openalex.org/W2913934285","https://openalex.org/W2972178378","https://openalex.org/W2973213249","https://openalex.org/W2977675690","https://openalex.org/W3012362737","https://openalex.org/W3042267407","https://openalex.org/W3045142354","https://openalex.org/W3108248926","https://openalex.org/W3116854979","https://openalex.org/W3140121688","https://openalex.org/W3160334541","https://openalex.org/W3160608948","https://openalex.org/W3162565149","https://openalex.org/W3171267997","https://openalex.org/W3202506981","https://openalex.org/W4200550984","https://openalex.org/W4206574962","https://openalex.org/W4281258100","https://openalex.org/W4285089376","https://openalex.org/W4290237500","https://openalex.org/W4297830426","https://openalex.org/W4367593596","https://openalex.org/W4396617851","https://openalex.org/W4399556424","https://openalex.org/W4404723894","https://openalex.org/W4409368558","https://openalex.org/W7128588063","https://openalex.org/W7133239493","https://openalex.org/W7147110886"],"related_works":[],"abstract_inverted_index":{"Molybdenite":[0],"commonly":[1],"coexists":[2],"with":[3,64,170],"chalcopyrite":[4,117,236],"in":[5,24,113],"porphyry":[6],"copper":[7,95],"deposits,":[8],"necessitating":[9],"the":[10,92,101,114,124,233],"efficient":[11],"separation":[12,28,115,234],"of":[13,76,86,94,103,116,126,180,186,191,197,219,235],"these":[14],"minerals":[15],"through":[16],"froth":[17],"flotation.":[18,30],"Depressants":[19],"play":[20],"a":[21,59,73,83,119,141,177,183,189,194,216,243],"crucial":[22],"role":[23],"achieving":[25],"effective":[26],"metal":[27],"during":[29],"While":[31],"conventional":[32],"inorganic":[33],"depressants":[34],"such":[35],"as":[36,109,242],"sodium":[37],"hydrosulfide":[38],"(NaHS)":[39],"offer":[40],"satisfactory":[41],"metallurgical":[42,207],"performance,":[43],"they":[44],"pose":[45],"significant":[46,217],"drawbacks,":[47],"including":[48],"strong":[49,168],"odour,":[50],"toxicity,":[51],"and":[52,88,96,162,193,239],"inconsistent":[53],"grades.":[54],"Globally,":[55],"there":[56],"has":[57],"been":[58],"shift":[60],"towards":[61],"environmental":[62],"sustainability":[63],"emphasis":[65],"on":[66,91,130,222],"freshwater":[67],"conservation.":[68],"Some":[69],"studies":[70],"have":[71,81],"shown":[72,82],"beneficial":[74],"effect":[75,85,125],"seawater":[77],"flotation,":[78],"while":[79],"others":[80],"deleterious":[84],"Ca":[87],"Mg":[89],"ions":[90],"flotation":[93,132,150,223],"molybdenum.":[97],"This":[98],"study":[99,227],"investigated":[100],"performance":[102,133,208],"Disodium":[104],"Carboxymethyl":[105],"Trithiocarbonate":[106],"(Orfom\u00ae":[107],"D8)":[108],"an":[110],"organic":[111],"depressant":[112,156,178],"from":[118,237],"bulk":[120],"Cu-Mo":[121],"concentrate.":[122],"Additionally,":[123],"different":[127,210],"water":[128,211,220],"chemistries":[129],"their":[131],"was":[134,146],"investigated.":[135],"Response":[136],"surface":[137],"methodology":[138],"(RSM)":[139],"using":[140],"central":[142],"composite":[143],"design":[144],"(CCD)":[145],"employed":[147],"to":[148,205],"optimize":[149],"conditions.":[151],"The":[152,165,213],"independent":[153],"variables":[154],"included":[155],"dosage,":[157,159],"collector":[158,184],"conditioning":[160,195],"time,":[161],"pulp":[163],"pH.":[164],"model":[166],"showed":[167],"agreement":[169],"experimental":[171],"data,":[172],"identifying":[173],"optimal":[174],"conditions":[175,201],"at":[176],"dosage":[179,185],"5000":[181],"g/t,":[182,188],"10":[187],"pH":[190],"8.5,":[192],"time":[196],"1":[198],"min.":[199],"These":[200],"were":[202],"then":[203],"used":[204],"evaluate":[206],"across":[209],"types.":[212],"results":[214],"revealed":[215],"impact":[218],"chemistry":[221],"performance.":[224],"Overall,":[225],"this":[226],"offers":[228],"valuable":[229],"insights":[230],"into":[231],"improving":[232],"molybdenite":[238],"can":[240],"serve":[241],"guide":[244],"for":[245],"industrial":[246],"plant":[247],"practice.":[248]},"counts_by_year":[],"updated_date":"2026-10-12T09:40:04.860316","created_date":"2026-08-27T00:00:00"}
