Ukukhiqiza

Eminyakeni engu-35 edlule, imboni yensimbi nensimbi ibone izinguquko ezinkulu.Ngo-1980 kwakhiqizwa amathani angu-716 mln ensimbi futhi la mazwe alandelayo ayephakathi kwabaholi: i-USSR (21% yokukhiqizwa kwensimbi yomhlaba wonke), iJapane (16%), i-USA (14%), iJalimane (6%), i-China (5%). ), Italy (4%), France and Poland (3%), Canada and Brazil (2%).Ngokusho kwe-World Steel Association (WSA), ngo-2014 ukukhiqizwa kwensimbi emhlabeni wonke kwafinyelela ku-1665 mln amathani - ukukhuphuka okungu-1% uma kuqhathaniswa no-2013. Uhlu lwamazwe ahamba phambili lushintshe kakhulu.I-China ihamba phambili futhi ihamba phambili kakhulu kwamanye amazwe (i-60% yokukhiqizwa kwensimbi yomhlaba wonke), isabelo samanye amazwe esivela phezulu-10 singu-2-8% - iJapane (8%), i-USA ne-India (6%), eNingizimu. I-Korea neRussia (5%), iJalimane (3%), iTurkey, iBrazil neTaiwan (2%) (bheka uMdwebo 2).Ngaphandle kweChina, amanye amazwe aqinise izindawo zawo phezulu kwabayishumi yi-India, iSouth Korea, iBrazil neTurkey.

Ukusetshenziswa

I-ayoni ngazo zonke izinhlobo zayo (insimbi ecijile, insimbi kanye nensimbi egoqiwe) iyimpahla yokwakha esetshenziswa kakhulu emnothweni wesimanje womhlaba.Igcina indawo ehamba phambili ekwakhiweni ngaphambi kokhuni, iqhudelana nosimende futhi isebenzisana nayo (i-ferroconcrete), futhi isaqhudelana nezinhlobo ezintsha zezinto zokwakha (amapholimeri, izitsha zobumba).Sekuyiminyaka eminingi imboni yobunjiniyela isebenzisa izinto ezisansimbi ngaphezu kwanoma iyiphi enye imboni.Ukusetshenziswa kwensimbi emhlabeni wonke kubonakala ngomkhuba okhuphukayo.Isilinganiso sokukhula kokusetshenziswa ngo-2014 sasingu-3%.Izinga lokukhula eliphansi lingabonakala emazweni athuthukile (2%).Amazwe asathuthuka anezinga eliphezulu lokusetshenziswa kwensimbi (1,133 mln tonnes).