SU336881A1 - - Google Patents
Info
- Publication number
- SU336881A1 SU336881A1 SU1345994A SU1345994A SU336881A1 SU 336881 A1 SU336881 A1 SU 336881A1 SU 1345994 A SU1345994 A SU 1345994A SU 1345994 A SU1345994 A SU 1345994A SU 336881 A1 SU336881 A1 SU 336881A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- chlorine
- gases
- pyrite
- temperatures
- concentration
- Prior art date
Links
- 239000007789 gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000011028 pyrite Substances 0.000 description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 4
- 229910052683 pyrite Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- -1 iron arsenates Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical compound [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229940000489 arsenate Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- BMWMWYBEJWFCJI-UHFFFAOYSA-K iron(3+);trioxido(oxo)-$l^{5}-arsane Chemical compound [Fe+3].[O-][As]([O-])([O-])=O BMWMWYBEJWFCJI-UHFFFAOYSA-K 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Description
СПОСОБ УДАЛЕНИЯ МЫШБЯКА И ЦВЕТНЫХ МЕТАЛЛОВ ИЗ ОБОЖЖЕННЫХ ПИРИТНЫХ ОГАРКОВMETHOD OF REMOVING MYBBYA AND COLORED METALS FROM BURNED PYRITIC CARDS
Изобретение относитс к области подготовки металлургического сырь .This invention relates to the preparation of metallurgical raw materials.
Известен многоступенчатый способ обжига в кип щем слое пиритной руды, содержащей мышь к и свинец, в котором после магнетизирующего обжига руду подвергают безоксилительиому , а затем окислительному обжигу при температурах до 900°С. Способ предусматривает удаление мышь ка, серы и свинца.A multistage method of burning in a fluidized bed of pyrite ore containing mouse and lead is known, in which, after the magnetising calcination, the ore is subjected to oximethylthioma and then to oxidative roasting at temperatures up to 900 ° C. The method involves removal of the mouse, sulfur and lead.
Иедостатком известного способа вл етс значительный расход твердого топлива - восстановител и разубоживание выдел ющимис газами концентрацию в них хлора.The disadvantage of this method is a significant consumption of solid fuel - a reducing agent and dilution by evaporating gases the concentration of chlorine in them.
С целью экономии топлива и повышени концентрации хлора в реактивных газах по предлагаемому способу обжиг пиритных огарков ведут с переводом 10-15% гематита в магнетит при температурах 850-950°С в течение 30-90 мин с последующим хлорированием .In order to save fuel and increase the chlorine concentration in the reactive gases of the proposed method, the firing of pyrite butts is carried out with the transfer of 10-15% hematite to magnetite at temperatures of 850-950 ° C for 30-90 minutes, followed by chlorination.
Согласно предлагаемому изобретению, восстановление обожженного пирита осуществл етс при наивысшей возможной температуре и достаточно длительное врем (30- 90 мин), чтобы способствовать практически полному разложению арсенатов железа. Таким образом, возможно проводить последовательное хлорирование в окисл ющей атмосфере и 1 оддержи1(пть конце1гграцию Оа в отход щих газах свыше 3% по объему. Если еще имеетс некоторое количество арсенатов железа , то концентраци кислорода должна поддерживатьс более низкой, чтобы разложить арсенаты. Таким путем при высокой концентрации Оа его расход в паразитных реакци х (тех, которые ведут к образованию ASCls, FeCb и СаСЬ), сокращаетс до минимума. По предлагаемому способу этап хлорировани и окислени восстановленных шлаков осуществл ют в реакторе кип щего сло предпочтительно в две стадии при температурах 650-950°С и при времени контакта 30- 120 мин. Количество хлора, поданного в реактор , равно 105-120% стехиометрического количества , необходимого дл превращени иежелезных металлов в хлориды. Хлорирующий газ слагаетс из хлора, кислорода и инертного газа, обычно из хлора и воздуха; концентраци кислорода - между 3 и 12% от общего выхода газов. Чтобы получить это, достаточно проанализировать выход щие газы и подрегулировать вводимые газы. Восстановление пиритовых щлаков при выAccording to the invention, the reduction of the calcined pyrite is carried out at the highest possible temperature and for a sufficiently long time (30- 90 min) to facilitate the almost complete decomposition of iron arsenates. Thus, it is possible to conduct sequential chlorination in an oxidizing atmosphere and 1 support (at the end of 1 g of Oa in exhaust gases above 3% by volume. If there is still some iron arsenate, the oxygen concentration should be kept lower in order to decompose the arsenate. In this way at high concentrations of Oa, its consumption in parasitic reactions (those leading to the formation of ASCls, FeCb and CaC) is reduced to a minimum. According to the proposed method, t in the fluidized bed reactor is preferably in two stages at temperatures of 650-950 ° C and at a contact time of 30-120 minutes, the amount of chlorine fed to the reactor is 105-120% of the stoichiometric amount needed to convert iron metals to chlorides. the gas is composed of chlorine, oxygen and inert gas, usually chlorine and air, and the oxygen concentration is between 3 and 12% of the total gas output. To obtain this, it is enough to analyze the output gases and adjust the injected gases. Recovery of pyrite scum at you
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU336881A1 true SU336881A1 (en) |
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