Fabric fadada da oxygen walƙiya narkewa

Oxygen, ko oxygen-mai nauyi walƙiya dab (KVP ko CDF) Hanyar ne mai irin autogenous flash smelting sulfide jan fi mai da hankali, da za'ayi a cikin dakatar. Babban fasali na wannan tsari ake amfani da hurawa fasaha oxygen da kuma kona na sulfides a kwance plume, kazalika da masana'anta compensator.

Tsari INCO (DPC) samo asali da farko a matsayin hanyar samar da ruwa sulfur dioxide da rana ɓangaren litattafan almara da kuma takarda masana'antu a cikin aiki da tagulla sulphide fi mai da hankali. Autogenous smelting tsari ta amfani da mai sayar sikelin matsayin oxidant tsantsa oxygen tsari (95% O2) ne da za'ayi a factory 1953 Copper Cliff a Canada. A irin wannan tsari da aka ɓullo da a cikin Tarayyar Soviet da kuma gabatar a cikin jan shuka a Almalyk (Uzbekistan). Babban bambancin daga CFP PVP ne cewa shredded da bushe saje zai samar warai cikin ɓuyar ta hanyar da kuka ciminti raw directed horizontally (a tsaye shaft narkewa offline) da kuma amfani da tsarki oxygen a matsayin aiwatar da oxidative tsãwa. smelting tsari ne da za'ayi a samu wani Matte 45-55% (idan samun wani aukaka Matte saboda wuce haddi da zafi tanda, overheats). A sharar gas dauke da har zuwa 80% SO2. Yiwuwa ga wani m masana'antu aikace-aikace tsari yana da INCO.

A mafi muhimmanci fasaha siffofin CFP ne: gaban a kwance harshen wuta makera qara wurin zama lokaci na barbashi a cikinta, abin da ya kamata a ka'idar inganta hadawan abu da iskar shaka intensification barbashi sarrafa tsari matakai, kazalika da dumama da kuma nama compensators. iyakance yiwuwar gudãnar da mataki na desulfurization a cikin shugabanci na ta karuwa, kuma da rashin yiwuwar samun Matte tare da jan ciki na 65-70% saboda da sallama a cikin wannan harka da babban adadin haddi zãfi, da kiwon da yawan zafin jiki a makera to 1550-1600 ° C, da kuma more, game da shi, cin zarafi rage juriya da tsaurin brickwork. da rashin yiwuwar ga wannan dalilai wani gagarumin karuwa a samar da kudi da smelting gagarumar wuta, karamin girma samu a lokacin smelting sulfur-arziki gas, da msar tambayar abun ciki na SO2 wanda zai iya kai 90-95%. Lokacin da CFP sake yin fa'ida pulverulent tattara aka gabatar a cikin wani kona makera sarari fasaha oxygen jet daga Kompenz Na roba, wadda take kaiwa ga samuwar turɓãya da gas plume, cikinsa da oxidized kuma narke kayan. Kan aiwatar da samuwar narke a cikin wanka makera delaminated for Matte kuma slag. Mayar da hankali da bushe finely tarwatsa a cikin cakuda da fluxes kwance jet cikin ƙaho musamman kuka harshen wuta a makera. Physico-sinadaran interactions tsakanin aka gyara na da nauyin hurawa oxygen da kwarara a cikin turɓãya kwarara. Saukad da aka ajiye daga plume narke a cikin kasa daga cikin gagarumar wuta da kuma samar da wani ruwa wanka.

A wadannan yankunan suna kafa a makera CFP:

- cajin-oxygen tocilan, inda da hadawan abu da iskar shaka na sulphide faruwa partially da slagging matakai shteyno- (I);

- slag wanka surface, cikinsa da juyi da kuma karshe narkewar halayen da hulda da sulfides da oxides (II);

- Stein-slag wanka, inda kare aiwatar da slagging shteyno- (II, III).

- masana'anta fadada gidajen abinci

CFP makera cajin kunshi jan tattara da kuma ma'adini. A cakuda da aka tace, da kuma wani danshi abun ciki na 12-16% a wani drum bushe don a saura taro na 4-7%, yayin da ake ji compensators. Na biyu bushewa mataki ne da za'ayi a tsaye na'urar busar sarewa, da ƙananan ɓangare na abin da hidima zafi gas, mai tsanani zuwa 400-500 C a wani kudi na 12-14 m / s. Karshe zafi na 0.1-0.5%, masu na'urorin busa yi tattara ne 80-85 m / hr, da mai ciruwa danshi zuwa 4 t / h.

High gudun oxidative matakai na gwargwado lokaci lamba surface, dagula gyara da kuma thermal abun da ke ciki Matte smelting yanayin. Shiri aukaka Matte sakamakon a cikin samuwar haddi zafi da kuma haddasawa sa rufi. Domin thermal iko da tsari a wannan yanayin wajibi ne a rage karfi na naúra da tattara. Don kara da juriya rufi kessoniruyut baka da makera bango aka sarrafa zagawa da abu (turɓãya, Converter slag), ta haka ne da inganta jan ciki na Matte ba tare da wani karuwa a thermal danniya a cikin taro kuma compensators nama.

CFP makera masonry sanya na tubalin da compensators hromomagnezitovogo Kompenz-roba. A gas daga makera ta cikin flue a tsakiyar wani konewa sarari naúrar. Kamar yadda amfani da ayukan iska mai ƙarfi aiwatar da oxygen abun ciki na game 95-98. %. Stein, dauke da 40-50% jan karfe, an sallami ta hanyar ramuka a buckets siphons. Slag aka zuba ta hanyar da taphole a slag, kuma an aika da vata. Makera gas da ƙura, an shiryar da ta cikin a haɗa flue bututu a cikin gas mai sanyaya. Dust kau na game da 10% by nauyi daga cikin cakuda. Dust gas 300-400 g / m≥ shigar da dawo da tukunyar jirgi da kuma a da kanti - 200-250 g / m≥.

CFP kuma za a iya samu nasarar amfani don aiki na Cu-Zn-, Cu-Ni- et al. Sulphide fi mai da hankali.