Inyungu zahabu

Inyungu zahabu

Ibikoresho bya zahabu byangiritse birashobora kugabanywa muburyo butatu:
Ubwoko bwa mbere ni arsenic, karubone, na sulferi yo mu bwoko bwa zahabu.Muri ubu bwoko, ibirimo arsenic birenze 3%, ibirimo karubone ni 1-2%, naho sulferi ni 5-6%.Ukoresheje uburyo busanzwe bwo gukuramo zahabu ya cyanide, igipimo cya zahabu ni Muri rusange ni 20-50%, kandi umubare munini wa Na2CN urakoreshwa.Iyo ikungahaye ku buhanga bwa flotation, nubwo urwego rwo hejuru rwa zahabu rushobora kuboneka, intungamubiri zirimo ibintu byinshi byangiza nka arsenic, karubone, na antimoni.Bizagira ingaruka ku ntambwe ikurikira yo gukuramo zahabu.

Ubwoko bwa kabiri ni amabuye arimo zahabu aho zahabu ipfunyika mu myunyu ngugu ya gangue hamwe n’umwanda wangiza mubice byiza na microscopique.Muri ubu bwoko, icyuma cya sulfide kirimo ni gito, hafi 1-2%, kandi cyinjijwe mumabuye y'agaciro ya gangue.Ibice byiza bya zahabu muri kristu bingana na 20-30%.Gukuramo cyanide bisanzwe cyangwa uburyo bwo gutunganya flotation bikoreshwa mugukuramo zahabu, ariko igipimo cyo kugarura zahabu kiri hasi cyane.

Ubwoko bwa gatatu ni ubutare bwa zahabu bufitanye isano ya hafi hagati ya zahabu, arsenic na sulfuru.Ikiranga ni uko arsenic na sulfure ari minerval nyamukuru itwara zahabu, kandi ibirimo arsenic ni bito.Indangantego ya zahabu yubwoko bwamabuye ukoresheje inzira imwe yo gukuramo zahabu cyanide ni mike.Niba zahabu ikungahaye kuri flotation, hashobora kuboneka umuvuduko mwinshi wo kugarura, ariko biragoye kuyigurisha kuko irimo arsenic ikabije.

tekinoroji y'ubucukuzi

guhitamo imiti

1. Kugabanuka kwa zahabu no gutandukana

Uburyo bwo gukoresha imiti ya zahabu burimo uburyo bwamazi ashyushye nuburyo bwa cyanide.Uburyo buvanze burasa nubusaza kandi bukwiranye na zahabu imwe yuzuye.Ariko, birahumanye kandi byasimbuwe buhoro buhoro n'ubwenge.Hariho uburyo bubiri bwa cyanidation, butera cyanidation na percolation cyanidation.

2. Ibikoresho byo gutoranya imiti na zahabu

Uburyo bwa chimique bukoreshwa muguhitamo ubutare bwa zahabu, cyane cyane uburyo bwikirere.Ibikoresho byakoreshejwe birimo ibikoresho byo guhanahana ifu ya zinc, ikigega gikurura, n'ibindi.

Ikigega cyo kumeneka ni igikoresho cyo gukurura ibishishwa.Iyo ingano yubucukuzi bwamabuye iri munsi ya mesh 200 kandi igisubizo cyibisubizo kiri munsi ya 45%, hashobora kubaho ihagarikwa kugirango hongerwe ingufu za zahabu yashonze mumatara ya adsorption kandi byihutishe igihe cyo kumeneka.