CN104878215A - Method for processing wet zinc residues by utilizing oxygen-enriched top-blowing lead smelting furnace - Google Patents
Method for processing wet zinc residues by utilizing oxygen-enriched top-blowing lead smelting furnace Download PDFInfo
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- CN104878215A CN104878215A CN201510188922.4A CN201510188922A CN104878215A CN 104878215 A CN104878215 A CN 104878215A CN 201510188922 A CN201510188922 A CN 201510188922A CN 104878215 A CN104878215 A CN 104878215A
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- 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
The invention relates to a method for processing wet zinc residues by utilizing an oxygen-enriched top-blowing lead smelting furnace, belonging to the technical field of thermometallurgy. According to the method, the wet zinc residues produced by a zinc system are added into the oxygen-enriched top-blowing lead smelting furnace; valuable metals in the wet zinc residues are enriched in lead-enriched residues; after being further reduced through a reducing furnace, the wet zinc residues enter a fuming furnace; therefore, the workload for the fuming furnace to process the wet zinc residues is reduced; sulphur in the wet zinc residues is recycled; the environment-friendly effect is good; the valuable metals are enriched in the molten residues, so that the valuable metals are comprehensively recycled; and the method disclosed by the invention has the advantages of being simple in process and unnecessary to increase extra investment and is capable of effectively solving stock occupation of acid leaching residue stacks, increasing the recycling rate of the valuable metals and the like.
Description
Technical field
The present invention relates to a kind of method of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia, belong to field of thermometallurgical technology.
Background technology
Wet method cadmia is the mixture crossing the calcium magnesium slag obtained in filter residue and Zn system scavenging process that Zn system calcining sulfuric acid leaching obtains, composition relative complex, and dominant is that Pb, Zn in slag is generally with lead sulfate (PbSO mutually
4), lead sulfide (PbS), zinc oxide (ZnO), zinc ferrite (ZnO.Fe
2o
3), zinc sulphide (ZnS), zinc sulfate (ZnSO
4), zinc silicate (ZnO.SiO
2) form exist.General leaded 6%-12%, zinc 14-25%, Ge100-200g/t, iron 12-18%, silicon-dioxide 4-7%, calcium oxide 4-8%, silver-colored 100-500g/t, water 8-14%.
Wet method cadmia is higher containing the rare precious metal such as Zn, Pb, Ge, Ag, common treatment process be dried wet method cadmia is added in fuming furnace or rotary kiln carry out reducing, voloxidation obtains zinc oxide fumes.Have no the process introduction with the plumbous Isa furnace process zinc baking sand acid leaching residue of refining both at home and abroad, Wen Shan zinc abstraction factory of Korea S adopts oxygen-enriched top blowing melting technology only to process cadmia, flue dust is obtained by fuming volatilization, reclaim valuable metal, difference and the present invention, when processing lead-containing material and producing lead, process wet method cadmia.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of method of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia, the wet method cadmia of Zn system output is added in oxygen-enriched top blowing lead-smelting furnace, valuable metal in wet method cadmia is enriched in lead-rich slag, fuming furnace is entered after the further reduction treatment of reduction furnace, reduce the homework burden of fuming furnace process wet method slag, reclaim the sulphur in wet method cadmia, environment protecting is good; By being enriched in slag by valuable metal, comprehensively recovering valuable metal, the present invention has technique simply, not to need to increase extra investment, effectively can solve acid leaching residue heap and account for stock, improve the feature such as recovery rate of valuable metals.
In order to achieve the above object, the present invention proposes following technical scheme:
A method for oxygen-enriched top blowing lead-smelting furnace process wet method cadmia, concrete steps are:
The first step: by wet method cadmia 1-8t/h, lead ore concentrate 10-30t/h, flue dust 3-8t/h, Wingdale 0.8-1.5t/h, quartz sand 1-2.5t/h, through with raw coal 1-2t/h mixing granulation after add continuously in oxygen-enriched top blowing lead-smelting furnace and carry out melting;
Second step: by adjusting process, air quantity: 2.5-4.5Nm
3/ s, amount of oxygen: 0.5-1Nm
3/ s, oxygen-rich concentration: 25-35% and spray gun fine coal coal-supplying amount 1.2-2t/h, control furnace atmosphere and bath temperature 750-1200 DEG C, and in slagging with put in plumbous process, wet method cadmia stops or reduction adds;
3rd step: smelt 1-2 hour at 750-900 DEG C of temperature, complete wet method cadmia and the decomposition of sulfuric acid lead skim, lead sulfide and lead sulfate cross reaction, then stop sulfuric acid lead skim, reduce or stop adding of wet method cadmia, improve spray gun fine coal consumption to 1.5-2.5t/h, improve flow of oxygen, be warming up to 900-1200 DEG C;
4th step: stop the adding of raw coal, after clarified separation 0.5-1 hour, give off lead-rich slag from cinder notch, discharges plumbous from plumbous mouth after 0.5-1.5h, flue gas through waste heat recovery, gather dust after be sent to relieving haperacidity.
As preferably, in the first step, described raw coal composition is containing charcoal 45%-60%, sulfur-bearing 0.1%-3%, ash content 15-30%, volatile matter 8-15%.
As preferably, in the first step, the described amount adding wet method cadmia need be determined according to slag type, keeps being no more than 12% containing zinc in wet method cadmia.
As preferably, in the 4th step, described discharge slag, put in plumbous process and all will stop adding sulfuric acid lead skim and raw coal, stop or reducing adding of wet method cadmia.
As preferably, in the 4th step, adding of described wet method cadmia for add continuously, also can add for interruption, will consider according to slag containing zinc and furnace temperature.
As preferably, in described technical process, add material mode for add continuously, whole fusion process removes slagging and puts the plumbous time period, all do not stop or reducing adding of wet method cadmia, released lead-rich slag every 4-5 hour, released lead bullion every 6-7 hour, stop in discharge process into coal, carry out temperature raising with the fine coal of 1.5-2.5.
As preferably, the calorific value of raw coal used is 18900-27300kJkg
-1.
Beneficial effect of the present invention:
(1) refine in plumbous process at oxygen-enriched top blowing, process wet method cadmia, does not need to increase extra investment;
(2) flue gas in wet method cadmia send sulfate system relieving haperacidity with smelting lead, and reclaim the sulphur in wet method cadmia, compared with conventional processes, environment protecting is good;
(3) by valuable metal is enriched in slag, the valuable metals such as synthetical recovery Pb, Zn, Ge, Ag, average treatment capacity per hour is 3t/h;
(4) the present invention has technique simply, and low, the effective solution acid leaching residue heap of production cost accounts for stock, improves the features such as recovery rate of valuable metals.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with the embodiment of the present invention and accompanying drawing, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
A method for oxygen-enriched top blowing lead-smelting furnace process wet method cadmia, concrete steps are:
Table 1 wet method cadmia composition (%)
To add wet method cadmia 1t/h, its composition is in table 1.
1) on DCS, set wet method cadmia 1t/h, lead ore concentrate 10t/h, flue dust 3t/h, Wingdale 0.8t/h, quartz sand 1t/h, raw coal 1t/h, add continuously in oxygen-enriched top blowing lead-smelting furnace after mixing granulation and carry out melting.
2) strict Controlling Technology air quantity: 2.5-4.5Nm3/s in fusion process, amount of oxygen: 0.5-1Nm3/s, oxygen-rich concentration is: 25-35%, spray gun fine coal coal-supplying amount 1.2t/h.
3) smelt 1 hour at 750-900 DEG C of temperature, wet method cadmia, sulfuric acid lead skim are decomposed, lead sulfide and lead sulfate cross reaction, then improve flow of oxygen, stop adding of sulfuric acid lead skim, improve fine coal consumption to 1.5t/h, under being warming up to 900-1200 DEG C of temperature, according to practical situation, doses is increased and decreased in fusion process.
4) 0.5-1h before slagging, stops adding of raw coal, releases lead-rich slag from cinder notch.
5) when after slagging 0.5h, boiled plumbous mouth puts lead.
6) high-temperature flue gas through waste heat recovery, gather dust after with other SO
2relieving haperacidity is sent in flue gas mixing.
7) circulation melting, released lead-rich slag, released lead bullion every 4.5-5 hour every 4-5 hour.
Embodiment 2
To add wet method cadmia 4t/h, its composition is in table 1.
1) on DCS, set wet method cadmia 4t/h, lead ore concentrate 20t/h, flue dust 6t/h, Wingdale 1.15t/h, quartz sand 1.75t/h, raw coal 1.5t/h, add continuously in oxygen-enriched top blowing lead-smelting furnace after mixing granulation and carry out melting.
2) strict Controlling Technology air quantity: 2.5-4.5Nm3/s in fusion process, amount of oxygen: 0.5-1Nm3/s, oxygen-rich concentration is: 25-35%, spray gun fine coal coal-supplying amount 1.6t/h.
3) smelt 1.5 hours at 750-900 DEG C of temperature, wet method cadmia, sulfuric acid lead skim are decomposed, lead sulfide and lead sulfate cross reaction, then improve flow of oxygen, stop adding of sulfuric acid lead skim, improve fine coal consumption to 2t/h, under being warming up to 900-1200 DEG C of temperature, according to practical situation, doses is increased and decreased in fusion process.
4) 0.5-1h before slagging, stops adding of raw coal, releases lead-rich slag from cinder notch.
5) when after slagging 0.5h, boiled plumbous mouth puts lead.
6) high-temperature flue gas through waste heat recovery, gather dust after with other SO
2relieving haperacidity is sent in flue gas mixing.
7) circulation melting, released lead-rich slag, released lead bullion every 4.5-5 hour every 4-5 hour.
Embodiment 3
To add wet method cadmia 8t/h, its composition is in table 1.
1) on DCS, set wet method cadmia 8t/h, lead ore concentrate 30t/h, flue dust 8t/h, Wingdale 1.5t/h, quartz sand 2.5t/h, raw coal 2t/h, add continuously in oxygen-enriched top blowing lead-smelting furnace after mixing granulation and carry out melting.
2) strict Controlling Technology air quantity: 2.5-4.5Nm3/s in fusion process, amount of oxygen: 0.5-1Nm3/s, oxygen-rich concentration is: 25-35%, spray gun fine coal coal-supplying amount 2t/h.
3) smelt 2 hours at 750-900 DEG C of temperature, wet method cadmia, sulfuric acid lead skim are decomposed, lead sulfide and lead sulfate cross reaction, then improve flow of oxygen, stop adding of sulfuric acid lead skim, improve fine coal consumption to 2.5t/h, under being warming up to 900-1200 DEG C of temperature, according to practical situation, doses is increased and decreased in fusion process.
4) 0.5-1h before slagging, stops adding of raw coal, releases lead-rich slag from cinder notch.
5) when after slagging 0.5h, boiled plumbous mouth puts lead.
6) high-temperature flue gas through waste heat recovery, gather dust after with other SO
2relieving haperacidity is sent in flue gas mixing.
7) circulation melting, released lead-rich slag, released lead bullion every 4.5-5 hour every 4-5 hour.Oxygen-enriched top blowing lead-smelting furnace lead-rich slag composition is in table 2, and technical indicator is in table 3.
Table 2 oxygen-enriched top blowing lead-smelting furnace lead-rich slag composition (%)
Table 3 oxygen-enriched top blowing lead-smelting furnace process zinc hydrometallurgy slag technical indicator
Effect analysis:
The present invention, by lead ore concentrate, wet method cadmia, flue dust, sulfuric acid lead skim, flue dust, Wingdale, quartz sand and raw coal mix according to a certain percentage, adds melting in oxygen-enriched top blowing lead-smelting furnace continuously; Atmosphere in stove and bath temperature is controlled by adjusting process wind, oxygen-rich concentration, material input amount and coal-supplying amount, 1-2 hour is smelted at 750-900 DEG C of temperature, complete the decomposition of wet method cadmia and sulfuric acid lead skim, lead sulfide and lead sulfate cross reaction, then stop sulfuric acid lead skim, reduce or stop adding of wet method cadmia, improve spray gun fine coal consumption 1.5-2.5t/h, improve flow of oxygen, be warming up to 900-1200 DEG C; Stop adding of raw coal, after clarified separation 0.5-1 hour, give off lead-rich slag from cinder notch, discharge plumbous after 0.5-1.5h from plumbous mouth, flue gas through waste heat recovery, gather dust after be sent to relieving haperacidity, reclaim the sulphur in wet method cadmia, compared with conventional processes, environment protecting is good; By valuable metal is enriched in slag, the valuable metals such as synthetical recovery Pb, Zn, Ge, Ag, be conducive to the reduction of production cost, oxygen-enriched top blowing lead-smelting furnace process zinc hydrometallurgy slag, is all adopt original equipment to process, does not need extra investment, process waste residue, prevent the pollution of the environment, also from the process of process, obtain benefit simultaneously, meet present enterprise development.
The invention provides a kind of method of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia, refine in plumbous process at oxygen-enriched top blowing, process wet method cadmia, does not need to increase extra investment; Flue gas in wet method cadmia send sulfate system relieving haperacidity with smelting lead, and reclaim the sulphur in wet method cadmia, compared with conventional processes, environment protecting is good; By valuable metal is enriched in slag, the valuable metals such as synthetical recovery Pb, Zn, Ge, Ag, average treatment capacity per hour is 3t/h; It is simple that the present invention has technique, and low, the effective solution acid leaching residue heap of production cost accounts for stock, improves the advantages such as recovery rate of valuable metals.
Finally, above embodiment and accompanying drawing are only in order to illustrate technical scheme of the present invention and unrestricted, although by above-described embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (7)
1., by a method for oxygen-enriched top blowing lead-smelting furnace process wet method cadmia, it is characterized in that, concrete steps are:
The first step: by wet method cadmia 1-8t/h, lead ore concentrate 10-30t/h, flue dust 3-8t/h, Wingdale 0.8-1.5t/h, quartz sand 1-2.5t/h, through with raw coal 1-2t/h mixing granulation after add continuously in oxygen-enriched top blowing lead-smelting furnace and carry out melting;
Second step: by adjusting process, air quantity: 2.5-4.5Nm
3/ s, amount of oxygen: 0.5-1Nm
3/ s, oxygen-rich concentration: 25-35% and spray gun fine coal coal-supplying amount 1.2-2t/h, control furnace atmosphere and bath temperature 750-1200 DEG C, and in slagging with put in plumbous process, wet method cadmia stops or reduction adds;
3rd step: smelt 1-2 hour at 750-900 DEG C of temperature, complete wet method cadmia and the decomposition of sulfuric acid lead skim, lead sulfide and lead sulfate cross reaction, then stop sulfuric acid lead skim, reduce or stop adding of wet method cadmia, improve spray gun fine coal consumption to 1.5-2.5t/h, improve flow of oxygen, be warming up to 900-1200 DEG C;
4th step: stop the adding of raw coal, after clarified separation 0.5-1 hour, give off lead-rich slag from cinder notch, discharges plumbous from plumbous mouth after 0.5-1.5h, flue gas through waste heat recovery, gather dust after be sent to relieving haperacidity.
2. the method for a kind of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia according to claim 1, it is characterized in that: in the first step, the described leaded 6%-12% of wet method cadmia composition, zinc 14-25%, Ge100-200g/t, iron 12-18%, silicon-dioxide 4-7%, calcium oxide 4-8%, silver-colored 100-500g/t, water 8-14%.
3. the method for a kind of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia according to claim 1, is characterized in that: in the first step, and described raw coal composition is containing charcoal 45%-60%, sulfur-bearing 0.1%-3%, ash content 15%-30%, volatile matter 8%-15%.
4. the method for a kind of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia according to claim 1, it is characterized in that: in the first step, the described amount adding wet method cadmia need be determined according to slag type, keeps being no more than 12% containing zinc in wet method cadmia.
5. the method for a kind of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia according to claim 1, it is characterized in that: in the 4th step, described discharge slag, put in plumbous process and all will stop adding sulfuric acid lead skim and raw coal, stop or reducing adding of wet method cadmia.
6. the method for a kind of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia according to claim 1, it is characterized in that: in described technical process, add material mode for add continuously, whole fusion process removes slagging and puts the plumbous time period, all do not stop or reducing adding of wet method cadmia, released lead-rich slag every 4-5 hour, released lead bullion every 6-7 hour, stop in discharge process into coal, carry out temperature raising with the fine coal of 1.5-2.5t/h.
7. the method for a kind of oxygen-enriched top blowing lead-smelting furnace process wet method cadmia according to claim 1, is characterized in that: the calorific value of raw coal used is 18900-27300kJkg
-1.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086413A (en) * | 2016-06-16 | 2016-11-09 | 汉中锌业有限责任公司 | A kind of technique of zinc hydrometallurgy lead smelting gas recycling |
| CN106382817A (en) * | 2016-10-19 | 2017-02-08 | 湖南中大联合创新科技发展有限公司 | Oxygen-enriched molten pool melting furnace |
| CN108330277A (en) * | 2018-02-09 | 2018-07-27 | 灵武市永宏工贸有限公司 | A kind of improved environment-friendly type zinc leaching residue technique |
| CN109439915A (en) * | 2018-09-17 | 2019-03-08 | 华北理工大学 | A kind of method and its application using blast furnace high-temperature slag sensible heat online processing zinc-containing dust |
| CN113957257A (en) * | 2021-10-21 | 2022-01-21 | 重庆万博再生资源利用有限公司 | Method for purifying zinc-containing slag by zinc hydrometallurgy |
| CN115433834A (en) * | 2022-08-01 | 2022-12-06 | 长沙有色冶金设计研究院有限公司 | Method for treating high-iron zinc slag |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4508565A (en) * | 1983-05-02 | 1985-04-02 | Boliden Aktiebolag | Method for producing lead from oxidic lead raw materials which contain sulphur |
| CN101705366A (en) * | 2009-11-23 | 2010-05-12 | 长沙有色冶金设计研究院 | Direct lead smelting method for processing zinc smelting slag by matching |
| CN101768670A (en) * | 2010-02-25 | 2010-07-07 | 北京矿冶研究总院 | Method for smelting lead-containing material |
| CN101845551A (en) * | 2009-08-24 | 2010-09-29 | 中国恩菲工程技术有限公司 | Process for recovering valuable metal from residues containing zinc |
| CN103388079A (en) * | 2013-07-25 | 2013-11-13 | 云南驰宏锌锗股份有限公司 | Method for treating lead sulfate slag by using oxygen-enriched top-blowing furnace |
| CN103849779A (en) * | 2014-03-21 | 2014-06-11 | 云南驰宏锌锗股份有限公司 | Method for processing lead oxide ore concentrate by using rich oxygen top-blowing furnace |
-
2015
- 2015-04-21 CN CN201510188922.4A patent/CN104878215A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4508565A (en) * | 1983-05-02 | 1985-04-02 | Boliden Aktiebolag | Method for producing lead from oxidic lead raw materials which contain sulphur |
| CN101845551A (en) * | 2009-08-24 | 2010-09-29 | 中国恩菲工程技术有限公司 | Process for recovering valuable metal from residues containing zinc |
| CN101705366A (en) * | 2009-11-23 | 2010-05-12 | 长沙有色冶金设计研究院 | Direct lead smelting method for processing zinc smelting slag by matching |
| CN101768670A (en) * | 2010-02-25 | 2010-07-07 | 北京矿冶研究总院 | Method for smelting lead-containing material |
| CN103388079A (en) * | 2013-07-25 | 2013-11-13 | 云南驰宏锌锗股份有限公司 | Method for treating lead sulfate slag by using oxygen-enriched top-blowing furnace |
| CN103849779A (en) * | 2014-03-21 | 2014-06-11 | 云南驰宏锌锗股份有限公司 | Method for processing lead oxide ore concentrate by using rich oxygen top-blowing furnace |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086413A (en) * | 2016-06-16 | 2016-11-09 | 汉中锌业有限责任公司 | A kind of technique of zinc hydrometallurgy lead smelting gas recycling |
| CN106382817A (en) * | 2016-10-19 | 2017-02-08 | 湖南中大联合创新科技发展有限公司 | Oxygen-enriched molten pool melting furnace |
| CN106382817B (en) * | 2016-10-19 | 2019-02-15 | 湖南中大联合创新科技发展有限公司 | Oxygen enriched molten bath smelting furnace |
| CN108330277A (en) * | 2018-02-09 | 2018-07-27 | 灵武市永宏工贸有限公司 | A kind of improved environment-friendly type zinc leaching residue technique |
| CN109439915A (en) * | 2018-09-17 | 2019-03-08 | 华北理工大学 | A kind of method and its application using blast furnace high-temperature slag sensible heat online processing zinc-containing dust |
| CN109439915B (en) * | 2018-09-17 | 2020-04-17 | 华北理工大学 | Method for online treatment of zinc-containing dust by utilizing sensible heat of blast furnace high-temperature slag and application of method |
| CN113957257A (en) * | 2021-10-21 | 2022-01-21 | 重庆万博再生资源利用有限公司 | Method for purifying zinc-containing slag by zinc hydrometallurgy |
| CN113957257B (en) * | 2021-10-21 | 2023-09-01 | 重庆万博再生资源利用有限公司 | Method for purifying zinc-containing slag by zinc hydrometallurgy |
| CN115433834A (en) * | 2022-08-01 | 2022-12-06 | 长沙有色冶金设计研究院有限公司 | Method for treating high-iron zinc slag |
| CN115433834B (en) * | 2022-08-01 | 2024-01-30 | 长沙有色冶金设计研究院有限公司 | Treatment method of high-iron zinc slag |
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Application publication date: 20150902 |