Camino amalandira zilolezo zobowola projekiti ya Los Chapitos ku Peru

Unduna wa Zamagetsi ndi Migodi ku Peru wapereka chilolezo ku Canada Camino Corp. (TSXV: COR) kuti iyambe kubowola ndi ntchito zina zowunikira ntchito yake ya  Los Chapitos , yomwe ili m'chigawo chakumwera kwa Arequipa.

Wogwira ntchito mu mgodi akukonzekera kuyamba kupanga mapu, kuyesa ndi kuyenga zomwe akufuna sabata yamawa pa pulogalamu yobowola yomwe yakonzedwa mu September.

Nthawi yomweyo, General Directorate of Mining (DGM) ya Unduna wa Zamagetsi ndi Migodi idapereka chilolezo cha Camino kuti ayambe ntchito zomwe zafotokozedwa pakuwunika kwake kwachilengedwe, zomwe zavomerezedwa ndi General Direction of Mining Environmental Affairs. 

Chivomerezochi chimalola wogwira ntchito ku migodi kuyesa kuyesa mchere wa mkuwa ndikupanga nsanja zoboola motsatira njira ya 5 km. 

Chifukwa cha mliri wa covid-19, kampani ya Edmonton idayeneranso kupempha chivomerezo cha Surveillance, Prevention and Control Plan yomwe imalola kuti ikhale ndi antchito 10 pantchitoyi mu Julayi ndi Ogasiti.

"Ndikukhulupirira kuti ndife amodzi mwamakampani oyamba ofufuza achichepere omwe ayamba ntchito zofufuza ku Peru kuyambira pomwe ziletso za Covid-19 zidayamba," a Jay Chmelauskas, Purezidenti ndi CEO wa Camino, adatero m'mawu ake atolankhani.

"Ndi gulu lathu lochokera ku Peru, tipitiliza mosamala komanso moyenera kutsatira mfundo zathu za Covid-19 kuti tipitilize kuyesa kwathu kupeza mkuwa ku Los Chapitos motetezeka," adatero Chmelauskas.

"Akatswiri athu a sayansi ya nthaka apanga mapu omwe adzabowole, makamaka mchere watsopano wa mkuwa womwe udazindikirika kumwera kwa pulogalamu ya drill ya 2017/18 mpaka September uno. Masomphenya athu ndi kukulitsa madera odziwika a mchere wamkuwa, kutsata madera atsopano a mineralization, ndikuyamba kudziwa kukula kwa mkuwa ku Los Chapitos. "

Kodi Ni-Hard Steel ndi chiyani?

Ni-Hard ndi chitsulo choyera choyera, chosakanikirana ndi faifi tambala ndi chromium yoyenera kutsika pang'ono, ma abrasion otsetsereka pazonse zonyowa komanso zowuma. Ni-Hard ndi chinthu chosamva kuvala kwambiri, chopangidwa m'mawonekedwe ndi mawonekedwe omwe ndi abwino kuti agwiritsidwe ntchito pamapangidwe abrasive ndi kuvala ndi kugwiritsa ntchito. Kugwiritsa ntchito zinthu zamtunduwu nthawi zambiri kumayamba ndi Rod Mills ndi Ball Mills, komwe kukhudzidwa kunkawoneka kuti ndi kocheperako kuti mavalidwe owoneka bwino koma osamva bwino agwire bwino. Komabe, tsopano imatengedwa kuti ndi yachikale chifukwa cha kugwiritsidwa ntchito kwazitsulo za chrome ndi chitsulo choyera cha chrome-moly. Ma Ni-Hard castings amapangidwa ndi kulimba kosasunthika kwa 550 Brinell, chitsulo cholimba choyera chokhala ndi 4% Ni ndi 2% chrome, chomwe chimagwiritsidwa ntchito polimbana ndi abrasive komanso osamva kuvala m'mafakitale otsatirawa:

• Migodi
• Kusamalira Dziko
• Phula
• Zigayo za simenti

Ni-hard steel standard ndi ASTM A532 Type 1, Type 2, Type 4.

Kwa mphero, zoyambira zathu zimagwiritsa ntchito ASTM A532 Type 4 poponya.

Ni-Hard Mill Liners Material Chemical Composition

Udindo wazinthu zosiyanasiyana zamakina mu liner za Ni-hard mill:

Mpweya:  ambiri aiwo amapezeka mu carbide mu mawonekedwe a pawiri, ndipo zomwe zili mu carbon kusungunuka mu masanjidwewo ndizochepa. Kuti alloy akhale ndi kulimba kwina, zomwe zili mu kaboni zimasankhidwa mumtundu wa Hypoeutectic. Kukwera kwa carbon kumakhala, komwe kumakhala carbides, kutsika kumakhala kolimba, ndipo kulimba kumakhala kochepa kwambiri pambuyo pozimitsa; ngati mpweya wa carbon ndi wochepa kwambiri ndipo carbide ili yochepa kwambiri, alloy sangathe kuumitsa, ndipo mapangidwe a aloyi amachoka ku chigawo cha eutectic, chomwe chimakhala chosavuta kuoneka ngati shrinkage ndi porosity. Mpweya wa carbon mu alloy sikuti umangotsimikizira kuchuluka kwa carbides ndi eutectic carbides, komanso mpweya wosungunuka mu matrix umakhalanso ndi zotsatira zofunikira kwambiri pa chithandizo cha kutentha kwa alloy. Ndi kuwonjezeka kwa mpweya wa carbon mu matrix, malo osinthika a martensite mu alloy amachepetsa, zomwe zimapangitsa kuwonjezeka kwa voliyumu yotsalira ya austenite, ndipo matrix sangakhale olimba mokwanira.

Chromium: Chromium  ndi chinthu champhamvu chopanga carbide. Kuonjezera chromium yoyenera kumapangitsa kuti pakhale kuchuluka kwa carbide yamtundu wa M7C3, zomwe zingathandize kuti zinthuzo zisamawonongeke.

Silicon:  Silicon ndi chinthu chomwe chimalimbikitsa graphitization, makamaka chimakhala mu matrix kuti alimbikitse matrix, zomwe zili pamwamba, pearlite ndizosavuta kuwonekera. Komanso, pamene aloyi ali ndi hardability mokwanira, kuwonjezera pakachitsulo yoyenera akhoza kuchepetsa anakhalabe austenite ndi kusintha kuvala kukana.

Nickel:  nickel ndi gawo lokhazikika la austenite, lomwe limatha kusintha kwambiri kuuma kwa aloyi. Chifukwa cha mapangidwe ambiri a carbides mu aloyi, kuchuluka kwa nickel mu matrix kumawonjezeka kwambiri ndipo kuuma kumatha kuchitidwa mokwanira. Pamene zomwe zili mu nickel ndi 4% ~ 6%, martensite angapezeke, omwe amatha kusintha kukana kwa zinthuzo.

Manganese:  imatha kuthetsa zotsatira zoyipa za sulfure, kukhazikika kwa carbides, ndikuletsa mapangidwe a pearlite. Manganese ndi chinthu chokhazikika cha austenite mu martensitic white cast iron iron. Komabe, ngati zomwe zili pamwambazi ndizokwera kwambiri, austenite yosungidwa idzawonjezeka ndipo mphamvu idzachepetsedwa.

Ni-Hard Mill Liners Heat Chithandizo

Cholinga chachikulu cha chithandizo cha kutentha ndikupeza kuuma kofunikira ndi microstructure yabwino. Mu njira yochizira kutentha, kutentha kwa austenitizing ndikofunikira kwambiri. Kuonjezera apo, kulamulira kwa nthawi yogwira ndi kuzizira kumakhala ndi zotsatira zosiyana. Njira zotsatirazi zochizira kutentha zitha kusankhidwa pazigawo zolimba za nickel cast iron IV:

• Awiri otsika kutentha temperings pa 550 ℃ ndi 450 ℃ anatengera.
• Kutentha kwa annealing kumatsimikiziridwa molingana ndi mawonekedwe enieni a zigawozo, Annealing pa 750 ℃ ​​~ 850 ℃.

Pochiza kutentha, kutentha kwa kutentha ndi kuzizira kuyenera kuyang'aniridwa mosamala kuti zitsimikizidwe kuti kutentha ndi kuzizira kwa mbali imodzi, kuti tipewe kusweka chifukwa cha kupsinjika kwa kutentha.

Zoyenera ndondomeko magawo

1. Kukula kwanjira: potengera zomwe zikufunika zakunja, deta yoyeserera ya labotale, ndi machitidwe opanga, sikelo iyenera kukhala 1.5% - 2.0%.
2. Chilolezo cha Machining: chifukwa kuuma kwa zinthu pambuyo pa chithandizo cha kutentha kumafika pamwamba pa 60HRC, ndizovuta kwambiri kukonza. Choncho, malipiro a makina ayenera kukhala ochepa momwe angathere. M'malo mwake, ndalama zopangira makina ziyenera kukhala zokwanira, nthawi zambiri 2-3mm.
3. Kuthira kutentha: pofuna kuonetsetsa kuti mkati mwa kuponyera ndi yaying'ono, kutentha kothira kuyenera kuyendetsedwa ndi kutentha kochepa, nthawi zambiri osapitirira 1300 ℃.
4. Nthawi ya nkhonya: chifukwa cha kung'amba kwakukulu kwa zinthu, nthawi ya nkhonya iyenera kuyendetsedwa mosamalitsa malinga ndi nyengo ikathira. Nthawi zambiri, bokosilo limatha kutsegulidwa sabata imodzi mutaponya.
5. Mapangidwe a gating ndi riser system: popeza kuuma kwa chitsulo cha nickel hard cast iron ndikopitilira 50HRC, ndikosavuta kusweka pambuyo potenthedwa ndi kuzizira mwachangu. Choncho, kudula gasi kapena arc gouging sikungagwiritsidwe ntchito pokweza madzi, ndipo njira zamakina zokha zingagwiritsidwe ntchito. Pofuna kuthandizira kuchotsedwa kwa madzi okwera, popanga madzi okwera, mpando wokwera uyenera kukhala pafupifupi 15mm kuposa pamwamba pa moyo, ndipo pansi pa chikhalidwe cha kudyetsa kokwanira, "khosi" limapangidwa pa muzu wa chokwera. Ponena za kuchuluka kwa ma risers, mfundo ndikuwonetsetsa kuti mkati mwake muli mkati mwake; mu dongosolo la gating, pali chipata chimodzi chowongoka, chipata chimodzi chopingasa, ndi ma nozzles anayi amkati, omwe ali a dongosolo lotseguka.
6. Kutsuka ndi kupera: mutatha kutentha kwa mphero, madzi ndi muzu wokwera ayenera kutsukidwa ndikupukutidwa. Pa akupera, kutenthedwa m'deralo osati kwaiye kupewa ming'alu.

@Nick Sun     [email protected]