SU1687637A1 - A method of processing zinc-containing slags in electric furnace - Google Patents
A method of processing zinc-containing slags in electric furnace Download PDFInfo
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- SU1687637A1 SU1687637A1 SU894649882A SU4649882A SU1687637A1 SU 1687637 A1 SU1687637 A1 SU 1687637A1 SU 894649882 A SU894649882 A SU 894649882A SU 4649882 A SU4649882 A SU 4649882A SU 1687637 A1 SU1687637 A1 SU 1687637A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- zinc
- slag
- electric furnace
- kwh
- note
- Prior art date
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- 239000002893 slag Substances 0.000 title claims abstract description 33
- 239000011701 zinc Substances 0.000 title claims abstract description 22
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 239000011787 zinc oxide Substances 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims abstract 3
- 239000000956 alloy Substances 0.000 claims abstract 3
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 3
- 238000009833 condensation Methods 0.000 claims 1
- 230000005494 condensation Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000009856 non-ferrous metallurgy Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910020169 SiOa Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
Abstract
Изобретение относитс к цветной металлургии и может быть использовано при переработке цинковых шлаков в электропечи дл извлечени цинка и снижени расхода электроэнергии. Это достигаетс за счет того, что восстановление оксида цинка ведут железом или его сплавами при отношении .восстановител к цинку, содержащемус в сулане электропечи (2-3}-1, а в качестве нагревател сулана используют медные электроды , расположенные под слоем шлака на подине электропечи. 5 табл.The invention relates to non-ferrous metallurgy and can be used in the processing of zinc slags in an electric furnace to extract zinc and reduce power consumption. This is achieved due to the fact that the reduction of zinc oxide is carried out with iron or its alloys with the ratio of reducing agent to zinc containing in the electric furnace sulan (2-3} -1, and copper electrodes located under the slag layer on the furnace hearth are used as the sulan heater 5 tab.
Description
Изобретение относитс к цветной металлургии и может быть использовано при переработке цинковых шлаков в электропечи дл извлечени цинка.The invention relates to non-ferrous metallurgy and can be used in the processing of zinc slags in an electric furnace for the extraction of zinc.
Цель изобретени - повышение извлечени цинка из шлака и снижение расхода электроэнергии.The purpose of the invention is to increase the recovery of zinc from slag and reduce power consumption.
Пример 1. Обработку шлака, содержащего , %:Zn 10,4; Fe33,5; РЬ2,1; СаО 17,5; SI02 23, осуществл ли м гким железом при 1450°С. Дл этого электропечь разогрели предварительно до 1450° на обесцинкован- ном шлаке (42,0 Fe; 19 СаО; 22 SI04; 3 АДОз; 3 NaaO), который-плавили в шахтной печи. До 1100°С электропечь разогревали ни- хромовой проволокой, введенной внутрь электропечи, затем влили 200 г жидкого обесцинкованного шлака, подготовленного в шахтной печи. После того, как температура обесцинкованного шлака в электропечи повысилась до 1450°С, в нее загрузили 800 г цинковистого шлака (в три приема по 200- 300 с через 5 мин). Начало загрузки первойExample 1. Processing slag containing,%: Zn 10.4; Fe33.5; Pb2,1; CaO 17.5; SI02 23, made with soft iron at 1450 ° C. For this, the electric furnace was preheated to 1450 ° on the de-galvanized slag (42.0 Fe; 19 CaO; 22 SI04; 3 ADOz; 3 NaaO), which was smelted in a shaft furnace. Up to 1100 ° C, the electric furnace was heated with a chromium wire introduced into the electric furnace, then 200 g of liquid de-galvanized slag prepared in a shaft furnace was poured. After the temperature of the discolored slag in the electric furnace increased to 1450 ° C, 800 g of zinc slag was loaded into it (in three steps, 200–300 s in 5 minutes). Start loading first
порции цинковистого шлака считает началом опыта. Как только температура в электропечи вновь достигла 1450°С, в нее загрузили 142 г (200%) .мелкой железной стружки (0,2x5x10). Общее врем плавки цинковистого шлака и восстановлени составило 1 ч. Среднее напр жение на медных электродах равн лось 14В, а сила тока достигала 20 А, После окончани восстановлени шлака, печь отключили, удалили из нее шлак и остаточное железо. Шлак после взвешивани направили на химический анализ. Он имел следующий состав, %: 0,4 2п; 0,063 РЬ; 41,6 Fe; 17,8 СаО; 23,4 5Ю2. Общее количество шлака 975,2 г. Показатели плавки приведены в табл. 1.The portions of the zinc slag are considered the beginning of the experience. As soon as the temperature in the electric furnace again reached 1450 ° C, 142 g (200%) of small iron chips (0.2x5x10) were loaded into it. The total melting time of the zinc slag and the reduction was 1 hour. The average voltage on the copper electrodes was 14 V, and the current reached 20 A. After the slag recovery, the furnace was turned off, the slag and residual iron were removed. After weighing, the slag was sent for chemical analysis. It had the following composition,%: 0.4 2p; 0.063 Pb; 41.6 Fe; 17.8 CaO; 23.4 SiO2. The total amount of slag is 975.2 g. Melting parameters are given in table. one.
Пример 2. В данном примере восстановление оксида цинка шлака выполн ли железной стружкой при температуре 1500°С. Разогрев печи и загрузку шлака осуществл ли так же, как и в примере 1. Дл обесцинковани шлака загрузили 214 г стружки, т.е. 30% от теоретически необхоWExample 2. In this example, the reduction of slag zinc oxide was performed with iron chips at a temperature of 1500 ° C. Heating of the furnace and slag loading were carried out in the same manner as in Example 1. For the dezincification of the slag, 214 g of chips, i.e. 30% of theoretically needed
ЁYo
оabout
0000
4141
сх соCX
4J4J
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димого количества восстановител . Общее врем обработки шлака было снижено до 38 мин,The amount of reductant. The total processing time of the slag was reduced to 38 minutes,
Показатели плавки шлака приведены Б табл.2.Slag melting rates are given in Table 2.
Пример 3. В этом примере разогрев печи также выполн ли по аналогии с примером 1. Обща площадь двух медных электродов равн лась 5 см :. Дл обесцинковани использовали шлак Беловского цинкового завода , получаемого при электротермическом способе переработки цинкового агломерата . Состав шлака, %:Zn5,3; Fe 19,8; StOz35; CaO 28; 3; MgO 3; Na20 2; S 1,0. Температура шлака при элккгроппэвке находилась на уровне 1450°С, Количество восстановител - стальной стружки (1,3 % С) в данном примере вз то в количестве 400% от теоретически необходимого (145 г). Длительность процесса плавки равна 0,5 ч. Обесцинкованный шлак, полученный в результате восстановлени , имел следующий состав, %; 0,31 Zn; 25,3 Fe;35 SI02;CaO 28,4; 3; MgO 3,3; NaaO 2,0.Example 3. In this example, the heating of the furnace was also performed by analogy with example 1. The total area of the two copper electrodes was 5 cm:. For dezincification, the slag from the Belovo zinc plant, obtained by the electrothermal method of processing zinc agglomerate, was used. The composition of the slag,%: Zn5,3; Fe 19.8; StOz35; CaO 28; 3; MgO 3; Na20 2; S 1.0 The slag temperature at elekkgroppevke was at the level of 1450 ° С. The amount of reducing agent - steel chips (1.3% С) in this example was taken in an amount of 400% of the theoretically necessary (145 g). The duration of the smelting process is 0.5 h. The discolored slag obtained as a result of the reduction had the following composition,%; 0.31 Zn; 25.3 Fe; 35 SI02; CaO 28.4; 3; MgO 3.3; NaaO 2.0.
Результаты плавки даны в табл. 3. П р и м е р 4. В этом примере осуществл ли восстановительную электроплавку шлака при температуре 1380°С. Площадь медных электродов соответствовала 13 см. В качестве восстанонител использовали стальную стружку. Состав шлака (800 г), подвергаемого восстановлению, %: 14,7 Zn; 1,9 Pb; 15 CaO; 22,5 SiOa; 32 FeO. Пуск и разогрев электропечи проводили по методике примера 1. Напр жение на электродах составл ло 17В, сила гока поддерживалась на уровне 20 А. Количество восстановител вThe results of melting are given in table. 3. EXAMPLE 4. In this example, a reduction electric slag melting was carried out at a temperature of 1380 ° C. The area of copper electrodes corresponded to 13 cm. Steel chips were used as a reducing agent. The composition of the slag (800 g), subjected to recovery,%: 14.7 Zn; 1.9 Pb; 15 CaO; 22.5 SiOa; 32 FeO. The start-up and warming up of the electric furnace were carried out according to the method of Example 1. The voltage on the electrodes was 17V, the strength of the gok was maintained at 20 A. The amount of reductant in
примере равн лась 300% от теоретически необходимого количества. Шлак после восстановлени (60 мин) имел следующий состав , %; 0,44 Zn; 0,093 Pb; 15,9 CaO; 45 FeO; SIOz 22,7, Показатели плавки приведены вThe example was 300% of the theoretically required amount. The slag after reduction (60 min) had the following composition,%; 0.44 Zn; 0.093 Pb; 15.9 CaO; 45 FeO; SIOz 22.7, Melting rates are given in
табл. 4.tab. four.
Сравнительные результаты опытов представлены в табл. 5.Comparative results of the experiments are presented in table. five.
Как видно из данных табл. 5, использование предложенного способа позволитAs can be seen from the data table. 5, the use of the proposed method will allow
снизить расход электроэнергии в 1,5 раза и повысить извлечение цинка на 5-6%.reduce energy consumption by 1.5 times and increase zinc extraction by 5-6%.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894649882A SU1687637A1 (en) | 1989-02-14 | 1989-02-14 | A method of processing zinc-containing slags in electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894649882A SU1687637A1 (en) | 1989-02-14 | 1989-02-14 | A method of processing zinc-containing slags in electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1687637A1 true SU1687637A1 (en) | 1991-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894649882A SU1687637A1 (en) | 1989-02-14 | 1989-02-14 | A method of processing zinc-containing slags in electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1687637A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2261285C1 (en) * | 2004-02-27 | 2005-09-27 | Общество с ограниченной ответственностью Фирма "ДАТА-ЦЕНТР" (ООО Фирма "ДАТА-ЦЕНТР") | Method of production of blister copper and zinc |
-
1989
- 1989-02-14 SU SU894649882A patent/SU1687637A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 376463, кл. С 22 В 7/04, 1973. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2261285C1 (en) * | 2004-02-27 | 2005-09-27 | Общество с ограниченной ответственностью Фирма "ДАТА-ЦЕНТР" (ООО Фирма "ДАТА-ЦЕНТР") | Method of production of blister copper and zinc |
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