Xa besenza isigqibo malunga nokuvala iyadi yokugcina amalahle, abanini beprojekthi bahlala bebambeka phakathi kwezinto ezimbini ezigqithileyo: "Uhlolo lokusingqongileyo luyeza, ngoko kufuneka silugubungele kuqala," okanye "Utyalo-mali luphezulu kakhulu, ngoko kufuneka silinde."
Zombini ezi ndlela zokujonga azisihoyi isixhobo esifanayo esibalulekileyo: uthelekiso olubanzi lweendleko. Beka ilahleko yamalahle, ixabiso le calorific, ukufuma, iindleko zokusebenza zokulawula uthuli kunye nokusetyenziswa komhlaba kwisibalo esinye, uze uziguqule zibe yindleko ngetoni nganye yamalahle aphathwa ngonyaka. Impendulo idla ngokucace ngakumbi kune-intuition yodwa.
Yintoni eLahlelelwayo yiNdawo yokuGcina amalahle rhoqo ngonyaka?
Ilahleko yoMyinge wamalahle
Ilahleko yobuninzi bamalahle kwiiyadi zogcino oluvulekileyo zivela ngokubanzi kwimithombo emithathu: amasuntswana acolekileyo aphetshethwa ngumoya, amalahle adiliziweyo akhukuliswe yimvula enkulu, kunye nokonakala okubangelwa yi-oxidation ngexesha lokugcinwa ixesha elide.
Imilinganiselo yoshishino epapashiweyo iyahluka kakhulu ngokuxhomekeke kwindlela yokulinganisa. Ezinye iimeko zokubuyisela amalahle kwindawo ebiyelweyo zinika ingxelo yelahleko yamalahle emalunga ne-0.5%, kodwa eli nani libalela kuphela umahluko womlinganiselo ngexesha lokulayishwa, ukothulwa kunye nokuphathwa kwangaphakathi. Xa imozulu, i-oxidation kunye nokuhla kwexabiso lekhalori nazo ziqwalaselwa, izinga lelahleko lilonke liqikelelwa kwi-2% -5%.
Ubalo lokuqala, ukucingelwa koluhlu oluphakathi lwe-1%–3% kuyacetyiswa, kuhlengahlengiswe ngokohlobo lwamalahle kunye nemozulu yendawo. Amaxabiso aphezulu anokuthi afaneleke kumalahle aguquguqukayo aphezulu agcinwe kwindawo ezomileyo, ezinomoya.
Iilahleko zeXabiso zeCalorific
Xa amalahle evezwe emoyeni, ipyrite isabela ngeoksijini kunye nokufuma, inyusa ubushushu bempahla kwaye ibangele ukuba izinto eziguqukayo zibaleke. Le nkqubo ayinakuguqulwa.
Ukugcinwa kwamalahle okuvaliweyo kunokunciphisa ilahleko yexabiso le-calorific malunga ne-300–500 kcal/kg. Kwi-thermal coal enexabiso le-calorific ye-5,500 kcal / kg, oku kulingana malunga ne-5% -9% yexabiso layo le-calorific.
Ezi lahleko azibonakali kwiirekhodi ze-weighbridge. Nangona kunjalo, xa amalahle exabiso ngokwexabiso le-calorific, aguqulela ngokuthe ngqo kwingeniso elahlekileyo.
Ukuphatha ukufuma kunye nezinto eziphathekayo
Amanzi emvula angena kwimfumba yamalahle evulekileyo anokunyusa umthamo wokufuma ngeepesenti ezi-2–3 zeepesenti. Oku kunokubangela uthotho lweengxaki zokusebenza: ukucuthwa kwe-crusher, ukutyibilika kwebhanti lokuhambisa, izigaqa zamalahle ezikhenkcezileyo ebusika kunye nokusebenza okuphantsi kwebhoyila. Kumalahle athunyelwa kumazwe angaphandle, ukufuma okugqithisileyo kunokukhokelela ekutsalweni kwamaxabiso okanye kwizohlwayo zekhontrakthi.
Ukuthotyelwa kokusiNgqongileyo: Yintoni ekufuneka abaSebenzi boGcino lwamalahle baQwalasele
Amanqanaba amane okuLawula uthuli
Ukusuka kwixabiso eliphantsi ukuya phezulu, iindlela eziqhelekileyo zokulawula uthuli ziquka:
- Ukutshiza ngamanzi kunye ne-crust-forming agents
- I-windbreak kunye nezikrini zokunciphisa uthuli
- Iishedi ezivalelweyo
- Izakhiwo ezivaliweyo zokugcina okanye iidomes
Iinketho ezimbini zokuqala ziquka iindleko zokusebenza eziphindaphindiweyo. Ukusebenza kwabo kuxhomekeke kwisantya somoya kunye namandla okusebenza. Ezi zimbini zokugqibela zifuna utyalo-mali olukhulu kwaye zibe zii-asethi ezisisigxina.
Inkqubo yolawulo ibhekiselele ekuvalelekeni okukhulu kweendawo ezintsha neziphuculweyo zokugcina amalahle kwiimarike ezininzi. Amazibuko aselunxwemeni kunye neendawo zombane ezikufutshane neendawo zasezidolophini ziphakathi kweendawo ezijongene noxinzelelo olumandla lokusingqongileyo. Iimfuno ezisebenzayo ziyahluka ngokwegunya kunye neprojekthi.
Umgangatho wokwenziwa komsebenzi woGcino lwamalahle oluvalwe ngokugqibeleleyo
Idata epapashiweyo evela kwiiprojekthi zeshedi yogcino lwezibuko ezivalelekileyo zibonisa oku kuphucuka okunokwenzeka kulandelayo: Ukukhutshwa kothuli olungekhoyo kuncitshiswe ngama-80%–95%, PM10 (incukuthwane ephefumlayo enobubanzi besuntswana le-≤10 μmUgxininiso lwehliswe ngaphezu kwe-90%, ukuphakama kokusasazwa kothuli kwehliswe ngama-75% -80%.
La manani anceda ukuguqulela iinjongo zemo engqongileyo jikelele kwiikhrayitheriya zokwamkeleka ezinokulinganiswa. Kwiiprojekthi eziphantsi kovavanyo lwempembelelo yokusingqongileyo okanye ezijongene nomhla wokugqibela wokulungiswa, idatha yeprojekthi eqinisekisiweyo inokubonelela ngereferensi eluncedo.
Elinye icala leeNdleko zokuthotyelwa kokusiNgqongileyo
Iindleko zokulawula uthuli kwiiyadi zamalahle ezivulekileyo-kuquka ukutshizwa kwamanzi, umbane, ukutshintshwa kwesikrini sothuli kunye nokucoca-ziindleko zokusebenza eziphindaphindiweyo ezingadali i-asethi esisigxina. Ngexesha longcoliseko lomoya olumandla, abaqhubi banokufuneka ukuba banciphise imveliso.
Ilahleko yemveliso ebangelwa kukuvalwa kunzima ukuyilinganisa kwangaphambili, kodwa ziphakathi kweendleko ezijongelwa phantsi ngokulula xa kuvavanywa iprojekthi ebiyelweyo.
Ukubala Iindleko zokuGcina amalahle ngeToni nganye
Ukubala iingqikelelo
| Ipharamitha | Ukucingela | Inkcazo |
| Ukukhutshwa kwamalahle ngonyaka | 300,000 t | Umgodi ophakathi okanye indawo yokuvelisa amandla eyadi yamalahle |
| Ixabiso lamalahle elibhekiselele | $130/t | I-Midpoint yoluhlu oluxeliweyo lwe-2026 ye-$ 125-150 / t ye-Newcastle 6,000 kcal amalahle |
| Izinga lelahleko lilonke | 1% / 2% / 3% | Iimeko ezintathu eziquka umyinge wamalahle, ixabiso lekhalori kunye nelahleko enxulumene nokufuma |
| Iindleko zokwakha indawo ebiyelweyo | $63–92/m² | Ngokusekwe kwixabiso elivalwe ngentsimbi ehonjiswe ngombala we-RMB 450–650/m², iguqulelwe kwi-RMB 7.1 ngedola yaseMelika. |
| Indawo ebiyelweyo | 30,000 m² | Ngokuhambelana nomthamo ochaziweyo wokugcina iitoni ezingama-60,000 |
Ixabiso lamalahle esalathiso lisekwe kuluhlu lwengqikelelo luka-2026 olukhankanyiweyo kumaxabiso kunye nengxoxo yeendleko ii IEA’s Amalahle 2025 ingxelo. Amaxabiso amalahle aphezulu alenza libe lifutshane ixesha lentlawulo yeprojekthi ebiyelweyo.
Ilahleko yoNyaka kwiiNtlawulo eziThathu ezohlukeneyo zeLahleko
| Ixabiso lelahleko lilonke | Ilahleko yamalahle ngonyaka | Ixabiso lelahleko loNyaka | Inkcazo |
| 1% | 3,000 t | $390,000 | Iyadi yokugcina amalahle elawulwa kakuhle |
| 2% | 6,000 t | $780,000 | Ingqikelelo ephakathi |
| 3% | 9,000 t | $1,170,000 | Amalahle aguquguqukayo aphezulu kwimimandla eyomileyo, enomoya |
Utyalo-mali kunye neXesha lokuBuyisa
Kwindawo ebiyelweyo eyi-30,000 m², utyalo-mali oluqikelelwayo lusukela kwi- $1.89 yezigidi ukuya kwi-2.76 yezigidi zeedola.
| Ixabiso lelahleko lilonke | Ugcino loNyaka | Intlawulo kuTyalo-mali oluphantsi | Intlawulo kwi-Higher Investment |
| 1% | $390,000 | 4.8 iminyaka | 7.1 iminyaka |
| 2% | $780,000 | 2.4 iminyaka | 3.5 iminyaka |
| 3% | $1,170,000 | 1.6 iminyaka | 2.4 iminyaka |
Ixesha lokubuyisela livakalelwa kakhulu kwizinga lelahleko elililo. Inyathelo lokuqala ke ngoko kufuneka libe kukulinganisa ilahleko phantsi kweemeko zokwenyani zokusebenza endaweni yokugxila kwiindleko zokwakha kuphela.
Ubalo olungasentla alubandakanyi ugcino kwiindleko zokusebenza zokulawula uthuli, ixabiso lomhlaba okhutshiweyo ngokuvalekileyo, kunye nokuthintela umngcipheko wokuphazamiseka kwemveliso. Ukuquka le miba kunokunciphisa ixesha lokubuyisela.
Ukuthelekisa izisombululo eziNtathu zokuGcina amalahle
| Into | Vula iMfumba yamalahle | IShedi Evalwe Ngokuyinxenye | IDome evalwe ngokupheleleyo okanye iSakhiwo seVault yeBarrel |
| Iindleko zokwakha | Elona liphantsi | Phakathi | Phezulu (malunga namaxesha amathathu exabiso elivulekileyo leyadi, njengoko kuchaziwe) |
| Ilahleko yobuninzi bamalahle | 2%–5% | 1%–2% | Kufutshane no-zero, njengoko kuchaziwe |
| Ukugcinwa kwexabiso lekhalori | Ubuhlwempu | Phakathi | Kulungile |
| Ukulawula ukufuma | Akukho nanye | Ngokukodwa | Indawo ebiyelweyo; ulawulo lwangempela luxhomekeke kuyilo kunye nokusebenza |
| Ukulawula uthuli | Izikrini zothuli kunye nokutshiza ngamanzi | 50% -80% ukunciphisa | I-80% -95% yokunciphisa |
| Umhlaba ongama-60,000 t wamalahle | Malunga. 30,000 m² | Malunga. 8,000–12,000 m² | Malunga. 4,500 m² |
| Ukupakisha kunye nokubuyisela izixhobo | Kusenokufuneka oomatshini abaninzi bokuphatha izinto eziphathekayo | Iimfuno zezixhobo ezincitshisiweyo | Ukupakishwa okuzenzekelayo kunye nokubuyiselwa kwakhona kunokwenziwa |
| Uvavanyo lokusingqongileyo kunye nokwamkelwa | Ucelomngeni olungakumbi | Ngokubanzi iyalawuleka ngakumbi | Ngokuqhelekileyo kulula ukuhlangabezana neenjongo zokulawula uthuli, ngokuxhomekeke kwiimfuno ezisebenzayo |
| izicelo ezifanelekileyo | Ukudluliselwa kwexesha elifutshane kunye nemisebenzi ephantsi | Isisombululo senguqu | Ukugcinwa kwexesha elide kunye neendawo ezinobume bendalo |
Isitokhwe esivulekileyo esibambe iitoni ezingama-60,000 zamalahle sinokufuna malunga ne-30,000 m², xa sithelekisa ne-4,500 m² yendawo yokugcina evalelweyo—umlinganiselo ophantse ube yi-6.7:1. Kwiiprojekthi ezinomhlaba omncinane okhoyo, lo mahluko unokuba nesigqibo esingaphaya kweendleko zokwakha.
Apho iiTrusses zePlanethi kunye neeSpatial Lattice Shells zahluka
I-Span yenye yezinto eziguquguqukayo eziphambili kukhetho lwesakhiwo. Kwisithuba esimalunga ne-60 m, iitrasi zenqwelo-moya kunye neefreyimu zeephothali zombini zinokuba nokhetho loqoqosho. Njengoko i-span ikhula, izakhiwo zenqwelomoya zinokufuna iindawo ezinkulu ezinqamlezileyo ukuchasana namaxesha okugoba, okubangela ukuba ukusetyenziswa kwentsimbi kunyuke ngokukhawuleza.
Amaqokobhe e-Spatial lattice asasaza imithwalo ngokusebenzisa amalungu kumacala amabini kwaye ngokuyintloko axhomekeke kwimikhosi ye-axial. Kwisithuba esimalunga ne-100 m okanye ngaphezulu, umahluko ekusetyenzisweni kwentsimbi kwiyunithi nganye yomgangatho womgangatho unokuvavanywa ngohlalutyo lwesakhiwo kunokuba uphathwe njengento ekhethwayo.
Ukusetyenziswa kweeFom ezintathu zoLwakhiwo
| Ifomu yoLwakhiwo | Cwangcisa ubume | Izinto Eziluncedo Ezingundoqo | Ukupakishwa okufanelekileyo kunye neendlela zokubuyisela kwakhona |
| Idome esazinge | Isetyhula | Ngokuqhelekileyo ukusetyenziswa kwentsimbi ephantsi ngokweyunithi yendawo nganye, ukuhanjiswa komthwalo ofanayo kunye nokumelana nomoya olungileyo | Ukupakishwa kwekholamu esembindini kunye noomatshini bokubuyisela |
| Ivault yomphanda (ishedi yobude) | Umcu omde woxande | Inokwandiswa kunye nobude bayo kwaye ifanele amandla amakhulu okugcina | Portal-type reclaimers kunye stockyards longitudinal |
| I-Prestressed tubular truss | Ulwakhiwo olukhulu lwe-rectangular-span | Iziphambano zodwa zingagqitha kwi-180 m | Ababuyiseli bohlobo lwebhulorho kunye ne-ultra-large-span longitudinal stockyards |
Ulandelelwano oluchanekileyo kukumisela inkqubo yokupakisha kunye nokubuyisela kwakhona kuqala, emva koko ukhethe imilo yesicwangciso, kwaye ekugqibeleni ukhethe inkqubo yesakhiwo. Ukubuyisela umva olu landelelwano kunokubangela isakhiwo esingahambelaniyo nenkqubo yokuphatha izinto eziphathekayo, ukuphazamisa ukugcinwa okulindelekileyo.
IiParameters zeProjekthi yoReferensi
| Uhlobo lweProjekthi | Inkqubo yoLwakhiwo | Iiparamitha eziphambili | Indawo yokwakha |
| Isitokhwe esisetyhula kwindawo yemigodi | Isakhelo sesithuba esingqukuva esinamaqhina abholithiweyo angqukuva | Ububanzi: 130 m; Ukuphakama kwesithsaba sendawo: +64 m; 3 izakhiwo | 39,799.5 m² |
| Ishedi evalelweyo yokugcina amalahle kwizibuko | Isakhelo sesithuba se-barel-vault enamalungu angqukuva abholithiweyo | Ubude: 118 m; ubude: 736 m; ukuphakama kophahla: 46 m | 86,848 m² |
| Ukubuyisela kwakhona indawo yokugcina amalahle kwindawo yombane | I-Prestressed tubular truss | Ubude: 185 m; ubude: 254 m | 46,990 m² |
Umhlwa onxulumene namalahle kufuneka uqwalaselwe ngokwahlukeneyo. I-Hot-dip galvanizing iyacetyiswa kumalungu efreyimu yendawo kunye namalungu, kunye nobukhulu be-zinc bokwambathisa ubuncinane be-85 μm. Iingubo ezongezelelweyo zokukhusela umhlwa kunye namanyathelo okutywina anokufuneka kwiiprojekthi zamalahle e-sulphur okanye iiprojekthi zonxweme.
Zeziphi iiProjekthi ekufuneka zithathelwe ingqalelo kuGcino lwamalahle oluvalekileyo?
Isigqibo ngokubanzi sehlela kwizinto ezintathu: umsebenzi wonyaka, ixabiso lamalahle nohlobo, kunye neemfuno zolawulo kunye nokufumaneka komhlaba.
Kwimisebenzi ephantsi, ixesha lokubuyisela lingadlulela ngaphaya kweminyaka elishumi, okwenza i-stockpile evulekileyo kunye nezikrini zokunciphisa uthuli zibe yinto efanelekileyo.
Ngamaxabiso amalahle aphezulu okanye iintlobo zamalahle aguquguqukayo, indawo ebiyelweyo inokubonelela ngenzuzo enkulu yezoqoqosho. Kwiindawo ezinovakalelo lokusingqongileyo, amazibuko okanye iindawo ezinomhlaba olinganiselweyo, indawo ebiyelweyo ayisosigqibo sezoqoqosho kuphela—isenokuba yimfuneko yokuvunywa kweprojekthi okanye ukuqhubeka nokusebenza.
Ukuba ubuncinci zimbini kwezi zinto zintathu zikhuthaza ukuvalwa, ukwenzeka okusesikweni kunye nohlalutyo lweendleko lufanelekile ukwenziwa.
Imibuzo Ebuzwa Rhoqo
Q1: Sixabisa malini isakhiwo sokugcina amalahle esivalwe ngokupheleleyo?
Kwisakhiwo sentsimbi esinombala ogqunywe ngeshiti lentsimbi, ixabiso eliqikelelweyo lolwakhiwo yi-$63–92/m². Oku akubandakanyi ukupakisha kunye nokubuyisela izixhobo, unyango lwesiseko kunye neenkqubo zokukhusela umlilo. Ezona ndleko zeprojekthi kufuneka zibalwe ngokusekelwe kubude bexesha, ubude be-eves, iimeko zomhlaba kunye nezinye iimfuno ezithe ngqo kwiprojekthi.
I-Q2: Yeyiphi eyonga kakhulu: idome yokugcina amalahle okanye ishedi evaliweyo yobude?
Ngomthamo ofanayo wokugcina, idome ejikelezayo ngokuqhelekileyo isebenzisa intsimbi encinci kwiyunithi yendawo yomgangatho kwaye ifuna umhlaba omncinci. Nangona kunjalo, ukuba inkqubo yokuphatha imathiriyeli ifuna i-stockyard ye-longitudinal kunye ne-portal-type reclaimer kunye nabahambisa umgama omde, idome isenokungahambelani noyilo lokusebenza. Ulwakhiwo lwe-barrel-vault okanye inkqubo ye-truss inokuba yimfuneko.
I-Q3: Ngaba isakhiwo sokugcina amalahle esivalelwe ngokupheleleyo siyahlangabezana ngokuzenzekelayo neemfuno zokulawula uthuli?
Hayi. Uvalelo olugcweleyo lunyathelo lolawulo oluphambili, kodwa umoya, iinkqubo zokucinezelwa kwenkungu kunye nolawulo olusebenzayo zisafuneka.
Ukufumba kwerhasi kunye nokudubula kothuli lwamalahle kufuneka kuthintelwe ngaphakathi kwesakhiwo. Ukungena komoya okufanelekileyo kunye neenkqubo zokubeka iliso zegesi zinokuba yimfuneko, ngelixa iindawo zokulayisha kunye nezothutho zisafuna ukucuthwa kothuli. Indawo ebiyelweyo ayiphelisi imfuneko yolawulo lokusebenza.
I-Q4: Ngaba iyadi yamalahle ekhoyo evulekileyo inokuvalwa ngaphandle kokuyeka ukusebenza?
Ukwakhiwa ngezigaba kunokukwenza oku. Indawo yesitokhwe inokwahlulwa ibe ngamacandelo, kunye necandelo elinye elivalelweyo ngelixa elinye liqhubeka nokusebenza, lixhaswa kukuphathwa kwempahla yethutyana kunye namalungiselelo okufuduswa.
Le ndlela ifuna ukwakhiwa kwezigaba kunye nokugcinwa kwamalahle okwethutyana ukuba kufakwe kuyilo kwasekuqaleni.
I-Q5: Ingaba isakhelo sesithuba sinokuhlala ixesha elingakanani sikhuselekile kumhlwa?
Iindawo zokugcina amalahle zingasesichengeni ngokuphakathi kwiimeko ezinomhlwa kakhulu. Ngokugqunywa kwegalvanized ye-hot-dip ubuncinane ye-85 μm kunye nokuhlolwa rhoqo, ubomi boyilo obuqhelekileyo beminyaka engama-25 bunokuqwalaselwa, ngokuxhomekeke kwiimeko ezikuko kunye neenkcukacha zeprojekthi. Hlola ukonakaliswa kweengubo rhoqo emva kweminyaka emi-2-3 njengethuba lokugcinwa elicetyiswayo. Ukuba ngaphezulu kwe-70% yengubo ye-zinc isetyenzisiwe, ukulungiswa kwakhona kufuneka kuthathelwe ingqalelo emva kovavanyo lobuchwephesha.
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