CN1420186A - Process for separating zinc and lead from metallurgic furnace dust - Google Patents
Process for separating zinc and lead from metallurgic furnace dust Download PDFInfo
- Publication number
- CN1420186A CN1420186A CN01131555A CN01131555A CN1420186A CN 1420186 A CN1420186 A CN 1420186A CN 01131555 A CN01131555 A CN 01131555A CN 01131555 A CN01131555 A CN 01131555A CN 1420186 A CN1420186 A CN 1420186A
- Authority
- CN
- China
- Prior art keywords
- zinc
- lead
- bath
- molten aluminum
- metallic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
Abstract
A process for separating Zn and Pb from metallurgical furnace dust is characterized by use of fusion reduction process. Its advantages are short time and less energy consumption.
Description
One, technical field: the present invention relates to a kind of smelting process of non-ferrous metal, particularly a kind of novel process of separating zinc lead in the metallurgic furnace dust.
Two, background technology: at present, the treatment process of metallurgical zincy lead dust (comprising stove dirt) is many, can reduce following a few class but integrate: the one, and as returning mine, recirculation minimizes the dust volume, and the maximization of zinc content is handled or is sold; The 2nd, stabilization treatment comprises that chemical fixation and vitrifying (or semi-molten) handle, and can sell behind the dust disposal, and is also stackable and dispose in landfill factory; The 3rd, the hydrometallurgic recovery method adopts acid, alkali or salts solution to remove or heavy metals such as separation and Extraction zinc, lead; The 4th, the pyrogenic process absorption method adopts special disposal device pyrogenic process to reclaim useful metals such as iron, zinc and lead; The 5th, pyrogenic process/wet method combined absorption method carries out pyrogenic process or wet processing earlier to dust, improves the grade that will reclaim metal, removes unwanted material, carries out wet method or pyrogenic process again and refines, and obtains high-quality product.Above-mentioned all kinds of technology, the industrialization of realization, the commercialization that have, what have still is in half industrialization, and what have has a development potentiality very much, and losing of having handled market or has been eliminated.And in all these recovery and treatment methods, pyrogenic attack technology is comparatively ripe, and wherein most representative technology is Waelz rotary kiln treatment process and INMETCO ring furnace class treatment process.But there is common issue with in these thermal process: the product after (), the processing is secondary dust (ZnO content 30～70%) and the iron slag that contains zinc, lead oxides mostly, or metallic zinc, lead and molten iron; (2), mainly be main purpose with the iron that reclaims in the dust, the secondary dust is as zinc metallurgy or the plumbous raw material of refining; (3), the zinc after handling effectively do not separated with lead, utilize the zinc lead resource, must handle the secondary dust again, makes zinc and plumbous the separation, this has just increased treatment process and cost greatly.In the last few years, a kind of method of iron-bath molten reduction had appearred, the reduction reaction temperature height of this method (more than the iron melting temperature), and speed of response is fast, but because the temperature of reaction height, zinc wherein and lead will volatilize jointly, do not reach isolating effect.
Three, summary of the invention: technical problem to be solved by this invention provides a kind of under suitable temperature, and disposable zinc and the lead that reclaims respectively in the metallurgic furnace dust of energy shortens treatment process, the novel process of the separation of Zinc lead of save energy.
The technical solution used in the present invention is:
Its technological process is:
Metallic aluminium in a, the fusing burner hearth forms bath of molten aluminum, and temperature is controlled in 900～1200 ℃, as heating carrier;
B, the metallurgic furnace dust of zincy lead is shaped, joins after the drying in the stove in the bath of molten aluminum, make its fusing fast in bath of molten aluminum, its contained zinc, lead oxides fast restore are metallic zinc, lead; Metallic zinc is with the form volatilization of zinc fume, and the method for employing condensation reclaims; Plumbous then stay in the slag with the form of metallic lead, reclaim with rich galvanized iron slag form.
The temperature of bath of molten aluminum is controlled between 1050～1150 ℃.
The temperature of bath of molten aluminum is controlled at 1100 ℃.
30～60 minutes reduction reaction time was the best with 45 minutes especially.
The add-on of aluminium is 20%～50% of a furnace refractory weight.
During shaping, add the binding agent that accounts for metallurgic furnace dust weight 0.5%～1%, granularity is 5～20mm, toasts 1～4 hour under 100～200 ℃ of temperature.
The novel process of zinc lead in the parting furnace dirt of the present invention, be to adopt aluminium to bathe the method smelting reduction process, because aluminium fusing point low (660 ℃), dust fusing point are also lower, so can be chosen under the lower temperature, both having made zinc, lead oxides fast restore in the dust is metallic zinc and lead, allows zinc be reclaimed with the method for zinc fume volatilization and employing condensation; Make that again metallic lead is non-volatile, allow it stay in the slag, reclaimed with the form of leaded rich slag, thereby reached disposable zinc and the lead of reclaiming respectively, shorten the purpose of treatment process.Simultaneously, because dust itself contains part carbon, so do not need to add in addition reductive agent, aluminium is only as the medium and the carrier of thermostatically heating in addition, and the proportion of aluminium and leaded rich slag differs bigger, leaded rich slag is more or less freely with separating of aluminium, and aluminium can be reused, and the consumption of aluminium is little, and, also can use aluminium scrap, thereby its energy consumption is less.
Four, description of drawings:
Fig. 1 is a process flow sheet of the present invention.
Five, embodiment:
Embodiments of the invention all adopt manganese ore blast furnace dust and dirt mud, and its Chemical Composition is: Zn--20.5, Pb--8.78, Fe--8.0, SiO
2--13.5, CaO--1.4, Al
2O
3--20.5, MgO--13.5, C--8.0, R
4--0.44[R
4Be quaternary basicity, i.e. (CaO+MgO)/(SiO
2+ Al
2O
3), be natural alkalinity], during shaping, add 0.5% tackiness agent (available industrial metasilicate or bentonite or slaked lime or syrup), make the furnace charge of 5～10mm, insert behind the airing in the baking oven and under 120 ℃ of temperature, toasted 3～4 hours, furnace charge.
Embodiment one: aluminium ingot or aluminium scrap are joined in the medium-frequency induction furnace burner hearth, and the add-on of aluminium is 20% of a charging weight, and energising deposite metal aluminium forms bath of molten aluminum, and controlled temperature is at 1200 ℃, as heating carrier; With the furnace charge of making, join in the interior bath of molten aluminum of stove, furnace charge melts in bath of molten aluminum, and its zinc that includes, lead oxides fast restore are metallic zinc, lead; Zinc adopts the method for sealed condensating to reclaim metallic zinc with the form volatilization of zinc fume; Lead is then stayed in the slag, reclaims with leaded rich slag form.Finish after 30 minutes, detect the residue Chemical Composition, zinc accounts for 1.18%, lead accounts for 12.46%, the evaporation rate calculation formula that the evaporation rate of zinc reaches 97.04%{ zinc is: [zinc amount in (in the furnace charge in zinc amount-residue zinc amount) ÷ pelletizing] * 100%}, plumbous accumulation rate [plumbous accumulation rate calculation formula is: (in the residue in the plumbous amount ÷ furnace charge plumbous amount) * 100%] is 73.0%.Under the similarity condition, the sealed condensating operation of zinc fume is changed into: the oxidizing chamber oxidation, form the zinc oxide steam, from chimney, enter atmosphere through cooling tube cooling, bag-type dust, tail gas again, receive dust in, zinc oxide accounts for 87.16%, plumbous oxide accounts for 10.04%.
Embodiment two: aluminium ingot or aluminium scrap are joined in the medium-frequency induction furnace burner hearth, and the add-on of aluminium is 30% of a charging weight, and energising deposite metal aluminium forms bath of molten aluminum, and controlled temperature is at 1150 ℃, as heating carrier; With the furnace charge of making, join in the interior bath of molten aluminum of stove, furnace charge melts in bath of molten aluminum, and its zinc that includes, lead oxides fast restore are metallic zinc, lead; Zinc adopts the method for sealed condensating to reclaim metallic zinc with the form volatilization of zinc fume; Lead is then stayed in the slag, reclaims with leaded rich slag form.Finish after 30 minutes, detect the residue Chemical Composition, zinc accounts for 2.55%, lead accounts for 17.15%, and the evaporation rate of zinc reaches 94.67%, and plumbous accumulation rate is 83.7%.Under the similarity condition, the sealed condensating operation of zinc fume is changed into: the oxidizing chamber oxidation, form the zinc oxide steam, from chimney, enter atmosphere through cooling tube cooling, bag-type dust, tail gas again, receive dust in, zinc oxide accounts for 88.87%, plumbous oxide accounts for 9.10%.
Embodiment three: aluminium ingot or aluminium scrap are joined in the medium-frequency induction furnace burner hearth, and the add-on of aluminium is 40% of a charging weight, and energising deposite metal aluminium forms bath of molten aluminum, and controlled temperature is at 1100 ℃, as heating carrier; With the furnace charge of making, join in the interior bath of molten aluminum of stove, furnace charge melts in bath of molten aluminum, and its zinc that includes, lead oxides fast restore are metallic zinc, lead; Zinc adopts the method for sealed condensating to reclaim metallic zinc with the form volatilization of zinc fume; Lead is then stayed in the slag, reclaims with leaded rich slag form.Finish after 45 minutes, detect the residue Chemical Composition, zinc accounts for 3.53%, lead accounts for 15.29%, and the evaporation rate of zinc reaches 90.53%, and plumbous accumulation rate is 95.78%.Under the similarity condition, the sealed condensating operation of zinc fume is changed into: the oxidizing chamber oxidation, form the zinc oxide steam, from chimney, enter atmosphere through cooling tube cooling, bag-type dust, tail gas again, receive dust in, zinc oxide accounts for 92.52%, plumbous oxide accounts for 4.95%.
Embodiment four: aluminium ingot or aluminium scrap are joined in the medium-frequency induction furnace burner hearth, and the add-on of aluminium is 50% of a charging weight, and energising deposite metal aluminium forms bath of molten aluminum, and controlled temperature is at 1100 ℃, as heating carrier; With the furnace charge of making, join in the interior bath of molten aluminum of stove, furnace charge melts in bath of molten aluminum, and its zinc that includes, lead oxides fast restore are metallic zinc, lead; Zinc adopts the method for sealed condensating to reclaim metallic zinc with the form volatilization of zinc fume; Lead is then stayed in the slag, reclaims with leaded rich slag form.Finish after 45 minutes, detect the residue Chemical Composition, zinc accounts for 2.75%, lead accounts for 13.68%, and the evaporation rate of zinc reaches 92.96%, and plumbous accumulation rate is 81.8%.Under the similarity condition, the sealed condensating operation of zinc fume is changed into: the oxidizing chamber oxidation, form the zinc oxide steam, from chimney, enter atmosphere through cooling tube cooling, bag-type dust, tail gas again, receive dust in, zinc oxide accounts for 91.80%, plumbous oxide accounts for 4.69%.
Embodiment five: aluminium ingot or aluminium scrap are joined in the medium-frequency induction furnace burner hearth, and the add-on of aluminium is 45% of a charging weight, and energising deposite metal aluminium forms bath of molten aluminum, and controlled temperature is at 1050 ℃, as heating carrier; With the furnace charge of making, join in the interior bath of molten aluminum of stove, furnace charge melts in bath of molten aluminum, and its zinc that includes, lead oxides fast restore are metallic zinc, lead; Zinc adopts the method for sealed condensating to reclaim metallic zinc with the form volatilization of zinc fume; Lead is then stayed in the slag, reclaims with leaded rich slag form.Finish after 30 minutes, detect the residue Chemical Composition, zinc accounts for 12.16%, lead accounts for 14.04%, and the evaporation rate of zinc is 57.54%, and plumbous accumulation rate is 96.1%.Under the similarity condition, the sealed condensating operation of zinc fume is changed into: the oxidizing chamber oxidation, form the zinc oxide steam, from chimney, enter atmosphere through cooling tube cooling, bag-type dust, tail gas again, receive dust in, zinc oxide accounts for 91.3%, plumbous oxide accounts for 6.96%.
Embodiment six: aluminium ingot or aluminium scrap are joined in the medium-frequency induction furnace burner hearth, and the add-on of aluminium is 35% of a charging weight, and energising deposite metal aluminium forms bath of molten aluminum, and controlled temperature is at 1050 ℃, as heating carrier; With the furnace charge of making, join in the interior bath of molten aluminum of stove, furnace charge melts in bath of molten aluminum, and its zinc that includes, lead oxides fast restore are metallic zinc, lead; Zinc adopts the method for sealed condensating to reclaim metallic zinc with the form volatilization of zinc fume; Lead is then stayed in the slag, reclaims with leaded rich slag form.Finish after 60 minutes, detect the residue Chemical Composition, zinc accounts for 8.24%, lead accounts for 14.17%, and the evaporation rate of zinc is 74.38%, and plumbous accumulation rate is 94.2%.Under the similarity condition, the sealed condensating operation of zinc fume is changed into: the oxidizing chamber oxidation, form the zinc oxide steam, from chimney, enter atmosphere through cooling tube cooling, bag-type dust, tail gas again, receive dust in, zinc oxide accounts for 90.82%, plumbous oxide accounts for 7.10%.
The present invention not only can handle various stove dirt (comprising stove dirt such as blast furnace and electric furnace), can also handle the various ores that contain zinc, lead oxides.
Claims (3)
1, a kind of novel process of separating zinc lead in the metallurgic furnace dust is characterized in that:
(1), the metallic aluminium of fusing in the burner hearth, form bath of molten aluminum, temperature is controlled in 900～1200 ℃, as heating carrier;
(2), the metallurgic furnace dust of zincy lead is shaped, join after the drying in the stove in the bath of molten aluminum, make its fusing fast in bath of molten aluminum, its contained zinc, lead oxides fast restore are metallic zinc, lead; Metallic zinc is with the form volatilization of zinc fume, and the method for employing condensation reclaims; Plumbous then stay in the slag with the form of metallic lead, reclaim with rich galvanized iron slag form.
2, the novel process of zinc lead in the separation metallurgic furnace dust according to claim 1, it is characterized in that: the temperature of bath of molten aluminum is controlled between 1050～1150 ℃.
3, the novel process of zinc lead in the separation metallurgic furnace dust according to claim 1 and 2, it is characterized in that: the temperature of bath of molten aluminum is controlled at 1100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011315555A CN1219084C (en) | 2001-11-21 | 2001-11-21 | Process for separating zinc and lead from metallurgic furnace dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011315555A CN1219084C (en) | 2001-11-21 | 2001-11-21 | Process for separating zinc and lead from metallurgic furnace dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1420186A true CN1420186A (en) | 2003-05-28 |
| CN1219084C CN1219084C (en) | 2005-09-14 |
Family
ID=4670681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011315555A Expired - Fee Related CN1219084C (en) | 2001-11-21 | 2001-11-21 | Process for separating zinc and lead from metallurgic furnace dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1219084C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673646A (en) * | 2013-11-30 | 2014-03-26 | 安徽华鑫铅业集团有限公司金铅分公司 | High-humidity regenerated lead smelting off-gas dehumidifying and dedusting device |
| CN106811602A (en) * | 2017-02-20 | 2017-06-09 | 石家庄学院 | A kind of method that utilization cadmia prepares zinc oxide |
| CN107673399A (en) * | 2017-11-13 | 2018-02-09 | 山东星苑锌业科技有限公司 | A kind of zinc oxide production technology for effectively reducing content of beary metal |
| CN114317965A (en) * | 2022-01-05 | 2022-04-12 | 重庆赛迪热工环保工程技术有限公司 | Process and device for smelting and reducing zinc-containing material by thermite method |
| CN114317964A (en) * | 2022-01-05 | 2022-04-12 | 重庆赛迪热工环保工程技术有限公司 | Process and device for reducing zinc-containing material by vacuum low-temperature aluminothermic process |
-
2001
- 2001-11-21 CN CNB011315555A patent/CN1219084C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673646A (en) * | 2013-11-30 | 2014-03-26 | 安徽华鑫铅业集团有限公司金铅分公司 | High-humidity regenerated lead smelting off-gas dehumidifying and dedusting device |
| CN106811602A (en) * | 2017-02-20 | 2017-06-09 | 石家庄学院 | A kind of method that utilization cadmia prepares zinc oxide |
| CN107673399A (en) * | 2017-11-13 | 2018-02-09 | 山东星苑锌业科技有限公司 | A kind of zinc oxide production technology for effectively reducing content of beary metal |
| CN114317965A (en) * | 2022-01-05 | 2022-04-12 | 重庆赛迪热工环保工程技术有限公司 | Process and device for smelting and reducing zinc-containing material by thermite method |
| CN114317964A (en) * | 2022-01-05 | 2022-04-12 | 重庆赛迪热工环保工程技术有限公司 | Process and device for reducing zinc-containing material by vacuum low-temperature aluminothermic process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1219084C (en) | 2005-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100469907C (en) | Method for processing dust with zinc of electric furnace | |
| CN108676942A (en) | The materials such as a kind of iron content and/or zinc lead bronze tin cooperate with processing recovery method with molten steel slag | |
| US5538532A (en) | Methods for recycling electric arc furnace dust | |
| US5004496A (en) | Method and apparatus for treatment of dust recovered from off gases in metallurgical processes | |
| CN106065433B (en) | The synthetical recovery processing unit and processing method of a kind of valuable metal | |
| CN100475987C (en) | Process and apparatus for recovery of non-ferrous metals from zinc residues | |
| US5188658A (en) | Method for recovering zinc from zinc-containing waste materials | |
| Doronin et al. | Commercial methods of recycling dust from steelmaking | |
| CN100494430C (en) | Method for producing zinc alloy from zinc dross | |
| CN101078052A (en) | Method for synthetically reclaiming iron and non-ferrous metal from solid waste of iron and steel plant | |
| CN101812594B (en) | Method for simultaneously smelting hydrolysis slag, pyrite and zinc kiln slag by using blast furnace | |
| CN105803205B (en) | A kind of energy-efficient secondary lead smelting technique | |
| CN112941341B (en) | Antimony-gold complex resource cooperative smelting method | |
| CN114317964A (en) | Process and device for reducing zinc-containing material by vacuum low-temperature aluminothermic process | |
| CN1219084C (en) | Process for separating zinc and lead from metallurgic furnace dust | |
| JP2002105550A (en) | Method for zinc recovery | |
| Schoukens et al. | Pilot-plant production of Prime Western grade zinc from lead blast-furnace slags using the Enviroplas process | |
| CN106756087A (en) | A kind of method that top side melting processes scrap lead cream | |
| CN1325672C (en) | Lead smelting method and apparatus implementing the same | |
| CN1051581C (en) | Method and device for preparing stibic white with jamesonite | |
| CN111850304B (en) | Copper slag treatment system and method | |
| AU594370B2 (en) | Recovery of volatile metal values from metallurgical slags | |
| CN114317965A (en) | Process and device for smelting and reducing zinc-containing material by thermite method | |
| WO1997000333A1 (en) | The processing of zinc bearing materials in a dc arc furnace | |
| CN102363840A (en) | Method for recovering iron and enriched copper-indium slag from electric furnace zinc metallurgical bottom slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 Termination date: 20181121 |