Guinea ta amince da yarjejeniyar cin nasara ta SMB akan Simandou

A ranar Alhamis ne gwamnatin Guinea ta amince da wata muhimmiyar yarjejeniya don bunkasa katafaren aikinta na karfen karfe na Simandou da wata gamayyar kungiyoyin da ke wakiltar kasashen Sin, Faransa da Singapore, kamar yadda ministan ma'adinai ya shaida wa kamfanin dillancin labarai na Reuters.

Ƙungiyar - wacce ta haɗa da Société Minière de Boké (SMB) da Jirgin Ruwa na Lashe na Singapore da kuma buƙatun gwamnatin Guinea - ta sami kyautar dala biliyan 14 a watan Nuwamban da ya gabata don haɓaka katangar 1 da 2 na mafi girma da aka sani a ajiya irinsa, yana riƙe sama da biliyan 2. ton na manyan ma'adinai.

A ranar Talata, yarjejeniyar ci gabanta “an amince da ita. Za mu ci gaba da rattaba hannu a kai a cikin kwanaki masu zuwa,” in ji Ministan ma’adinai Abdoulaye Magassouba ba tare da yin karin bayani ba.

Ƙasar Afirka ta Yamma ta yi ƙoƙarin haɓaka ajiyar kuɗin Simandu shekaru da yawa, amma aikin ya shiga cikin rigingimun shari'a da aka daɗe da tsadar kuɗi ya hana ruwa.

Gwamnati ta bukaci masu neman shiga da su gina titin jirgin kasa mai nisan kilomita 650 (mil 400) da kuma tashar ruwa mai zurfi don jigilar ma'adinan daga kuryar kudu maso gabashin Guinea zuwa gabar teku don fitar da su.

Masu zuba jari a cikin  haɗin gwiwar da ba a san su ba  sun haɗa da mai samar da aluminium na kasar Sin Shandong Weiqiao, rukunin China Hongqiao da Yantai Port Group, da kuma gwamnatin Guinea.

Zaɓin Abun Mill Liner

Abubuwan da aka murkushe daban-daban, yanayin aiki daban-daban suna buƙatar nau'ikan kayan aiki daban-daban don dacewa. Har ila yau, ɗakin niƙa mai ƙaƙƙarfan daɗaɗɗen nika mai kyau yana buƙatar nau'in kayan aiki daban-daban.

H&G Machinery yana samar da kayan da za a jefar da injin niƙa naku:

Manganese Karfe

Abubuwan da ke cikin manganese na babban farantin ƙarfe na ƙarfe na ƙarfe na manganese gabaɗaya shine 11-14%, kuma abun cikin carbon gabaɗaya shine 0.90-1.50%, yawancin waɗanda ke sama da 1.0%. A ƙananan nauyin tasiri, taurin zai iya kaiwa HB300-400. A babban tasirin tasiri, taurin zai iya kaiwa HB500-800. Dangane da nauyin tasiri, zurfin daɗaɗɗen Layer zai iya kaiwa 10-20mm. Ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙarfi zai iya tsayayya da tasiri kuma ya rage lalacewa. Babban ƙarfe na manganese yana da kyakkyawan aiki na rigakafin lalacewa a ƙarƙashin yanayin tasirin tasiri mai ƙarfi, don haka ana amfani dashi sau da yawa a cikin sassa masu jurewa na ma'adinai, kayan gini, wutar lantarki, da sauran kayan aikin injiniya. A ƙarƙashin yanayin ƙananan yanayin tasiri, babban ƙarfe na manganese ba zai iya yin amfani da halayen kayan aiki ba saboda aikin hardening aiki ba a bayyane yake ba.

Haɗin Sinadari

 Mechanical Properties da metallographic tsarin

Ƙayyadaddun samfur

Chrome Alloy Karfe

Chromium alloy simintin ƙarfe an kasu kashi babban chromium gami simintin ƙarfe (abin ciki na chromium 8-26% carbon abun ciki 2.0-3.6%), matsakaici chromium gami 4-6% chromium abun ciki, carbon abun ciki 2.0-3.2%), low chromium. Nau'i uku na baƙin ƙarfe simintin ƙarfe (abincin chromium 1-3%, abun cikin carbon 2.1-3.6%). Babban fasalinsa shine cewa microhardness na M7C3 eutectic carbide shine HV1300-1800, wanda aka rarraba a cikin nau'in hanyar sadarwa mara kyau kuma an ware shi akan martensite (tsari mafi wuya a cikin matrix karfe) matrix, yana rage tasirin cleavage akan matrix. Saboda haka, babban-chromium alloy liner yana da babban ƙarfi, ƙarfin niƙa na ball, da juriya mai girma, kuma aikin sa yana wakiltar matakin mafi girma na kayan juriya na ƙarfe na yanzu.

Haɗin Sinadari

Mechanical Properties da metallographic tsarin

Ƙayyadaddun samfur

Cr-Mo Alloy Karfe

H&G Machinery yana amfani da Cr-Mo alloy karfe don jefa layin niƙa. Wannan kayan da ya dogara da ma'aunin Ostiraliya, (AS2074 Standard L2B, da AS2074 Standard L2C) yana ba da tasiri mai inganci da juriya a cikin duk aikace-aikacen niƙa na atomatik.

Haɗin Sinadari

Dukiya ta Jiki & Karamin tsari

Ni-hard Karfe

Ni-Hard farar simintin ƙarfe ne, wanda aka haɗa shi da nickel da chromium wanda ya dace da ƙarancin tasiri, ƙazanta mai zamiya don aikace-aikacen rigar da busassun duka. Ni-Hard abu ne mai jure lalacewa, wanda aka jefa cikin sifofi da sifofi waɗanda suka dace don amfani da su a cikin ɓarna da lalacewa da muhalli da aikace-aikace.

Haɗin Sinadari

Farar Karfe

Haɗin Sinadari

Dukiya ta Jiki & Karamin tsari

Idan kuna da binciken abu na musamman, da fatan za a tuntuɓi injiniyan mu don yi muku hidima!

Nick Sun        [email protected]