Roasting pyrite zvinogadzirwa munyika dzakawanda

Pyrite - Zita boka zvicherwa, vari yeimwe chainge chakagadzirwa nesimbi kubva boka netini, nickel, simbi, cobalt, Platinum. The yeimwe vave sarufa Arsenic, uye namavara akanaka-selenium kana.

Calcination pyrite kunoratidza kuti feedstock chiedza muna ruvara, esimbi kubwinya, neukukutu kubva 3 kusvika 7. simbi kana simbi pyrite (FeS2 yemaitiro), aizivikanwawo pyrite, inokosha maindasitiri mbishi zvokuvakisa iyo sarufa yakasviba (mukurima mumasero). Chitarisiko, zvicherwa iri guru crystals duku yakarurama chimiro yellowish-ndachena ruvara ane neukukutu 6-6.5. Zvinoumba yakaisvonaka pyrite unotora 47 muzana simbi uye vanenge 53 muzana sarufa.

Calcination pyrites achiperekedzwa nokufamba dzinoverengeka nemakemikari, okutanga anopa rokuwedzera zvicherwa simbi sulfide uye nesarufa mhute wehurumende (tembiricha vanenge 500 C). Zvadaro sarufa vapor vari combusted, kupa sarufa dioxide, uye simbi oxide kana sulfide anopa yakavhenganiswa oxide. Pakazoti sulphide watsva incompletely, pova "mwenje" izvo zvingasanganisira fayalite uye zvimwe zvinhu, zvichienderana netsvina iri feedstock.

Calcination pyrites tenuka ari gasi Pasika imwe yakawanda SO3, admixed pamwe SO2. fuma iyi anoita munzira iyo midziyo ngura, saka kuderedza SO3 gasi tembiricha iri nzira yokubudisa mevira michina inofanira kuva pamusoro 850S, uye ipapo nokukurumidza kusiyira kuti 400C.

Roasting pyrite ari kuitwa munyika dzakawanda, sezvo chinhu ichi ndohwaJehovha zvavo. MuRussia, chicherwa ichi mined mu Soymenskoy nyika, Kalitvinskom munda, pamusoro Kushva, yezvouMwari zvirimwa kuCaucasus, muna Ryazan uye Smolensk kumatunhu, uye mune dzimwe nzvimbo. Kunze, kunyanya nomukurumbira deposits Spanish (kunyanya Aguas Tenidas apo mashoko harina mhangura, asi ane yepamusoro sarufa kugutsikana) zvatowedzera kushandisa mu kukura US, France, Norway, Sweden. Sulfuric pyrites zvakasikwa kazhinji admixed Arsenic mhando nefuma, chinopa tsvina chinokuvadza kwazvo pakuburitswa ari mumasero. Naizvozvo, vagadziri vanoedza kushandisa wakachena mbishi zvinhu. Somuenzaniso, kuRussia mafekitari muSt Petersburg, kushanda Swedish pyrites.

Roasting iron pyrites (nesarufa) yakaitwa muna yamavira, apo yakatsvuka zvinhu zviri zvokudya pachishandiswa sikuruwa kana kamwene. Uyezve, zviri hwakakanyiwa gobvu zvinhu hwakasimba izvo yatova uwandu hwezvinhu zvose zvabatanidzwa. (ari fluidized mubhedha uri chendarira, pasi iyo mhepo iri yaipiwa kubva pazasi), pashure izvo nemakemikari kuitika, achipa gasi (akabvisa) uye mwenje (akadurura pamwe chaiwo pombi). Uyewo kubva vira zvakawandisa kupisa kubviswa nemvura kutonhora zvinhu.

Calcination pyrite uchabudirira kana nokudyidzana pemvura pamwe mhepo inosimbisa ndiyo zvakakwana kumusoro. Naizvozvo, zvicherwa kazhinji kupatsanurwa kuva pulverized mamiriro (mu yamavira yakakodzera), apo PARTICIPLE saizi iduku zvokuti yakachena nyore chinopinda mukati guru fuma. Uyezve, tembiricha kuzvidzora kunokosha nokuti zvicherwa mukirasi iyi kazhinji sintered panguva kutonhora kumusoro 900 C. Kuti kugadzirisa dambudziko iri rinoshandiswawo senzira kubudiswa guruva-mhepo nezvakavhenganiswa, izvo ambotirega kutanga zvinhu kupisa pa kutonhora kusvika 1000 C, iyo kunonatsiridza kugadzirwa kunyatsoshanda.