CN102031393A - Continuous lead smelting clean production process - Google Patents
Continuous lead smelting clean production process Download PDFInfo
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- CN102031393A CN102031393A CN2010105742565A CN201010574256A CN102031393A CN 102031393 A CN102031393 A CN 102031393A CN 2010105742565 A CN2010105742565 A CN 2010105742565A CN 201010574256 A CN201010574256 A CN 201010574256A CN 102031393 A CN102031393 A CN 102031393A
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Abstract
The invention discloses a continuous lead smelting clean production process. The process comprises the following steps of: proportioning materials such as lead sulfide concentrate or a secondary lead raw material, a flux, lead dust and the like as required; performing a mixed granulation process; feeding a reaction smelting section of the entire equipment; smelting by an oxygen enriched bottom blowing method; directly feeding liquid-state high-lead slag into a reduction smelting section to perform reduction smelting so as to produce coarse lead; and directly feeding the reduced liquid-stage slag into a fuming section to perform fuming treatment so as to comprehensively recover valuable metals from the liquid-stage slag. Therefore, continuous clean production is realized in the true sense.
Description
Technical field
The present invention relates to smelt in the non-ferrous metal metallurgy industry plumbous processing method, concrete a kind of continual lead smelting process for cleanly preparing.
Background technology
At present, the technology that adopts of China's lead bullion production mainly contains traditional " sintering-blast furnace reduction " refining splicer's skill and direct lead smelting process such as oxygen bottom blowing-blast furnace reduction lead smelting process, QSL method, Kivicet method, ISA and Kaldo method.Because the low concentration sulphur dioxide flue gas recovery difficult that is produced in traditional " sintering-blast furnace reduction " refining splicer skill is bigger, is subjected to the restriction of processing condition and equipment, SO
2Uncontrollable discharge and lead fume dust pollution can't be effectively controlled, and country prohibited and adopts this explained hereafter in 2000.In recent years, along with country is strict day by day to environmental requirement, new lead smelting process was progressively applied in China, and it is very fast that the oxygen bottom blowing-blast furnace reduction of China's independent development that more outstanding is refines plumbous novel process promotion rate.
Oxygen bottom blowing-blast furnace reduction refining splicer skill is the molten pool melting technology that China succeeds through nearly 20 years experimental study, though solved the SO of the plumbous smelting industry of long-term puzzlement preferably
2The pollution problem of flue gas and lead fume dirt.The method that state's invention patent mandate notification number CN1285742C disclosed " adopt the lead smelting process of oxygen bottom-blowing-blast furnace reduction and realize its system " is the employing oxygen bottom-blowing in 22 days November in 2006 is carried out the molten lead oxidation slag (also claiming high lead slag in the industry) of melting output to raw material containing lead, this molten lead oxidation slag need condense and send blast furnace reduction again behind the ingot bar, the heat content of high-temperature fusion lead oxidation slag accounts for lead oxidation slag and reduces required heat content about 15%, can't utilize; Blast furnace reduction need consume expensive block metallurgical coke simultaneously, and in the reduction process, the coke incomplete combustion about 30% is arranged, and has both wasted the energy, has increased production cost again.In addition, blast furnace slag also need send fuming furnace further to handle, and production unit is many, and production link is many, invest bigger, the operating environment heavy contamination.
Summary of the invention
The purpose of this invention is to provide a kind of continual lead smelting process for cleanly preparing, it is serious to solve the environmental pollution that exists in the prior art, implementation cost height, the particularly utilization of high-temperature fusion high lead slag heat content, the problem of further improve operating environment, further saving energy and reduce the cost; The method that also provides in the fusion high lead slag fuming volatilization process of valuable metals such as plumbous reduction process and plumbous zinc to carry out in same stove simultaneously replaces original blast furnace and fuming slag, cancellation casting slag, thus reduce production link, save construction investment.
Technical scheme of the present invention is as follows:
A kind of continual lead smelting process for cleanly preparing, it is characterized in that: concrete production craft step: with lead ore concentrate or secondary lead raw material with after flux is prepared burden into furnace charge, send into the smelting section from the melting equipment charging opening and carry out melting, in the molten bath of described melting equipment, spray into oxygen rich gas continuously from the oxygen entrance; The smelting temperature in control molten bath is 1000-1200 ℃; After the melting, produce lead bullion, high lead slag melt and contain high density SO
2Flue gas; Contain high density SO
2Flue gas after waste heat boiler and dust precipitator are received lead fume dirt, send sulfate system relieving haperacidity, the emptying of relieving haperacidity tail gas; The lead fume dirt of described dust precipitator returns batching;
Described high lead slag melt directly enters into the retailoring section from the slag notch of smelting section through chute, opening for feed; In the retailoring section, from the bottom or the mixed gas generation combustion reactions of the continuous bubbling air of bottom side and coal gas or Sweet natural gas, in the control retailoring section temperature at 1000-1500 ℃, lead bullion; This lead bullion send ingot casting with smelting lead bullion that section is produced; The lead fume dirt that reduction is produced is also received lead fume dirt through dust precipitator and is returned batching; Reduction back liquid slag flow into the fuming section by the partition wall bottom and carries out the fuming processing, and flue dust enters the Zn dust dust arrester installation, comprehensive lead, zinc and the germanium metal that reclaims wherein; The slag that the fuming section produces is made building materials and is used.
In the described retailoring section retailoring process, feed an amount of air and unreacted reducing gas burning completely at the furnace chamber space segment of retailoring section.
Described melting equipment mainly is made up of smelting section, retailoring section and fuming section three parts order; The smelting section of described melting equipment is provided with the charging opening and first smoke outlet for the top, and bottom or bottom side are provided with the oxygen entrance, and the left end bottom is provided with slag notch, and the right-hand member bottom is provided with first siphon lead taphole; The scope of the angle α of the direction of described oxygen entrance and plummet is 0≤α≤90 °; Described retailoring section and fuming section are rectangle structure, and the centre has partition wall to separate, and the bottom is connected for two sections; Described retailoring section top is provided with the opening for feed and second smoke outlet, and the right-hand member bottom is provided with second siphon lead taphole, and the bottom is provided with the gas entrance; Opening for feed wherein links to each other by the slag notch of chute with the smelting section; The scope of the direction of gas entrance wherein and the angle theta of vertical curve is 0≤θ≤90 °; Described fuming section top is provided with nozzle and the 3rd smoke outlet, and the bottom is provided with air port side by side;
Lead smelting technology of the present invention has following advantage:
1. environmental protection is good
Smelting process among the present invention is to carry out in airtight melting equipment, has avoided SO
2The effusion of flue gas, the recovery utilization rate of sulphur significantly improves in the lead ore concentrate, the complete compliance with environmental protection requirements of exhaust emissions; In addition, raw material containing lead and flux cooperate the back of granulating directly into melting equipment, and fusion process does not have the operation of sintering back powder, effectively prevents the disperse of lead fume dirt; Simultaneously, the fusion high lead slag directly enters the retailoring section and reduces, and has cancelled the operation of casting slag and handling cinder ladle, and operating environment is further improved.
2. can realize continuous production
Smelting, retailoring and fuming are all carried out in the melting equipment of a cover integral body among the present invention, have realized continuous production, have reached the plumbous purpose of real " single stage method " refining.
3. energy consumption is low
The high-temperature flue gas of smelting section output adopts the waste heat boiler recovery waste heat among the present invention; Smelting section fusion process is realized self-heating, must not allocate the fuel concurrent heating into; Directly metallurgy fusion high lead slag makes full use of the heat content of fusion high lead slag, and adopts coal gas or Sweet natural gas retailoring, saves the energy than blast furnace reduction.
4. production cost is low
The reduction of fusion high lead slag is adopted coal gas or Sweet natural gas to replace the used metallurgical coke of blast furnace reduction and is made reductive agent among the present invention, and feeds the concurrent heating of burning of an amount of air, so production cost is relatively low.
5. construction investment is economized
Compare with external advanced lead smelting technology, initial cost of the present invention is economized, and the fuming of valuable metals such as the reduction of lead and plumbous zinc germanium volatilization can be carried out in same melting equipment in the fusion high lead slag, replace blast furnace and fuming furnace with a bottom convertor, and cancelled casting slag machine, production unit and production link have been reduced, so can save construction investment greatly.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Fig. 2 is a melting equipment structure iron of the present invention.
Among Fig. 2: 1 smelting section; 2 retailoring sections; 3 fuming sections; 4 charging openings; 5 first smoke outlets; 6 oxygen entrances; 7 slag notches; 8 first siphon lead tapholes; 9 partition walls; 10 opening for feeds; 11 second smoke outlets; 12 second siphon lead tapholes; 13 gas entrances; 14 chutes; 15 the 3rd smoke outlets; 16 air ports; 17 total slag-drip openings.
Embodiment
With reference to illustrated in figures 1 and 2, a kind of continual lead smelting process for cleanly preparing, its concrete production craft step: with lead ore concentrate or secondary lead raw material with after flux is prepared burden into furnace charge, send into the smelting section from melting equipment charging opening 4 and carry out melting, in the molten bath of described melting equipment, spray into oxygen rich gas continuously from oxygen entrance 6; The smelting temperature in control molten bath is 1000-1200 ℃; After the melting, produce lead bullion, high lead slag melt and contain high density SO
2Flue gas; Contain high density SO
2Flue gas after waste heat boiler and dust precipitator are received lead fume dirt, send sulfate system relieving haperacidity, the emptying of relieving haperacidity tail gas; The lead fume dirt of described dust precipitator returns batching; Described high lead slag melt directly enters into retailoring section 2 from the slag notch 7 of smelting section through chute 14, opening for feed 10; In the retailoring section, from the bottom or the mixed gas generation combustion reactions of the continuous bubbling air of bottom side and coal gas or Sweet natural gas, temperature is at 1000-1500 ℃ in the control retailoring section; At this moment, coal gas or Sweet natural gas be as reductive agent, and behind the described high lead slag melt thorough mixing it is reduced into lead bullion; This lead bullion send ingot casting with smelting lead bullion that section is produced; The lead fume dirt that reduction is produced is also received lead fume dirt through dust precipitator and is returned batching; Reduction back liquid slag flow into fuming section 3 by partition wall 9 bottoms and carries out the fuming processing, and flue dust enters the Zn dust dust arrester installation, comprehensive lead, zinc and the germanium metal that reclaims wherein; The slag that the fuming section produces is made building materials and is used.
Described melting equipment mainly is made up of smelting section 1, retailoring section 2 and fuming section 3 three parts order; The smelting section 1 of described melting equipment is provided with the charging opening 4 and first smoke outlet 5 for the top, and bottom or bottom side are provided with oxygen entrance 6, and the left end bottom is provided with slag notch 7, and the right-hand member bottom is provided with first siphon lead taphole 8; The scope of the angle α of the direction of described oxygen entrance 6 and plummet is 0≤α≤90 °; Described retailoring section 2 and fuming section 3 are rectangle structure, and the centre has partition wall 9 to separate, and the bottom is connected for two sections; Described retailoring section 2 tops are provided with the opening for feed 10 and second smoke outlet 11, and the right-hand member bottom is provided with second siphon lead taphole 12, and the bottom is provided with gas entrance 13; Opening for feed 10 wherein links to each other with the slag notch 7 of smelting section by chute 14; The scope of the direction of gas entrance 13 wherein and the angle theta of vertical curve is 0≤θ≤90 °; Described fuming section 3 tops are provided with nozzle and the 3rd smoke outlet 15, and the bottom is provided with air port 6 side by side; The bottom is provided with total slag-drip opening 17.
Claims (3)
1. continual lead smelting process for cleanly preparing, it is characterized in that: concrete production craft step: with lead ore concentrate or secondary lead raw material with after flux is prepared burden into furnace charge, send into the smelting section from melting equipment charging opening (4) and carry out melting, in the molten bath of described melting equipment, spray into oxygen rich gas continuously from oxygen entrance (6); The smelting temperature in control molten bath is 1000-1200 ℃; After the melting, produce lead bullion, high lead slag melt and contain high density SO
2Flue gas; Contain high density SO
2Flue gas after waste heat boiler and dust precipitator are received lead fume dirt, send sulfate system relieving haperacidity, the emptying of relieving haperacidity tail gas; The lead fume dirt of described dust precipitator returns batching; Described high lead slag melt directly enters into retailoring section (2) from the slag notch (7) of smelting section through chute (14), opening for feed (10); In the retailoring section, from the bottom or the mixed gas generation combustion reactions of the continuous bubbling air of bottom side and coal gas or Sweet natural gas, in the control retailoring section temperature at 1000-1500 ℃, lead bullion; This lead bullion send ingot casting with smelting section (1) lead bullion that produces; The lead fume dirt that reduction is produced is also received lead fume dirt through dust precipitator and is returned batching; Reduction back liquid slag flow into fuming section (3) by partition wall (9) bottom and carries out the fuming processing, and flue dust enters the Zn dust dust arrester installation, comprehensive lead, zinc and the germanium metal that reclaims wherein; The slag that the fuming section produces is made building materials and is used.
2. a kind of continual lead smelting process for cleanly preparing according to claim 1, it is characterized in that: in described retailoring section (2) the retailoring process, feed an amount of air and unreacted reducing gas burning completely at the furnace chamber space segment of retailoring section (2).
3. a kind of continual lead smelting process for cleanly preparing according to claim 1 is characterized in that: described melting equipment mainly is made up of smelting section (1), retailoring section (2) and fuming section (3) three parts order; The smelting section (1) of described melting equipment is provided with charging opening (4) and first smoke outlet (5) for the top, and bottom or bottom side are provided with oxygen entrance (6), and the left end bottom is provided with slag notch (7), and the right-hand member bottom is provided with first siphon lead taphole (8); The scope of the direction of described oxygen entrance (6) and the angle α of plummet is 0≤α≤90 °; Described retailoring section (2) and fuming section (3) are rectangle structure, and the centre has partition wall (9) to separate, and the bottom is connected for two sections; Described retailoring section (2) top is provided with opening for feed (10) and second smoke outlet (11), and the right-hand member bottom is provided with second siphon lead taphole (12), and the bottom is provided with gas entrance (13); Opening for feed wherein (10) links to each other with the slag notch (7) of smelting section by chute (14); The scope of the direction of gas entrance (13) wherein and the angle theta of vertical curve is 0≤θ≤90 °; Described fuming section (3) top is provided with nozzle and the 3rd smoke outlet (15), and the bottom is provided with air port (16) side by side; The bottom is provided with total slag-drip opening (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105742565A CN102031393A (en) | 2010-11-28 | 2010-11-28 | Continuous lead smelting clean production process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105742565A CN102031393A (en) | 2010-11-28 | 2010-11-28 | Continuous lead smelting clean production process |
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| CN2010105742565A Withdrawn CN102031393A (en) | 2010-11-28 | 2010-11-28 | Continuous lead smelting clean production process |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994774A (en) * | 2011-09-12 | 2013-03-27 | 安阳市岷山有色金属有限责任公司 | Lead blowing process by blowing fuel from bottom |
| CN103205582A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting process |
| CN103205581A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting device |
| 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 |
| CN103740945A (en) * | 2013-12-31 | 2014-04-23 | 河南豫光金铅股份有限公司 | Method for enriching and recycling cadmium from lead smelting system |
| CN103834817A (en) * | 2013-11-14 | 2014-06-04 | 安徽省华鑫铅业集团金铅分公司 | Combined regenerated lead oxygen-enriched three-blowing energy-saving smelting furnace |
| CN103882243A (en) * | 2012-12-21 | 2014-06-25 | 湖南宇腾有色金属股份有限公司 | Clean production balanced lead making technology |
| CN103937991A (en) * | 2014-04-08 | 2014-07-23 | 云南锡业股份有限公司 | Fractional collecting process of lead-smelting soot of top blowing furnace |
| CN104894380A (en) * | 2015-05-18 | 2015-09-09 | 张圣南 | Airtight oxygen-rich negative pressure efficient smelting furnace directional smelting clean production process |
| CN105485659A (en) * | 2015-11-26 | 2016-04-13 | 湖南华信稀贵科技有限公司 | Water supply pipe network of waste heat boilers |
| CN112239812A (en) * | 2020-09-18 | 2021-01-19 | 中国恩菲工程技术有限公司 | Continuous lead smelting device and continuous lead smelting process |
| CN112921184A (en) * | 2021-01-25 | 2021-06-08 | 江西齐劲材料有限公司 | Pyrometallurgical lead smelting device and process |
| CN113430388A (en) * | 2021-06-18 | 2021-09-24 | 中国恩菲工程技术有限公司 | Short-flow reduction fuming device and method for liquid lead slag, lead smelting system and method |
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| JPH0324238A (en) * | 1989-06-20 | 1991-02-01 | Dowa Mining Co Ltd | Lead smelting method |
| CN1544668A (en) * | 2003-11-25 | 2004-11-10 | 中国有色工程设计研究总院 | Oxygen bottom-blowing-blast furnace reduction process for lead smelting and apparatus therefor |
| CN1693497A (en) * | 2005-06-16 | 2005-11-09 | 中国有色工程设计研究总院 | Smelting method and device of molten lead oxidation slag |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994774A (en) * | 2011-09-12 | 2013-03-27 | 安阳市岷山有色金属有限责任公司 | Lead blowing process by blowing fuel from bottom |
| CN103882243A (en) * | 2012-12-21 | 2014-06-25 | 湖南宇腾有色金属股份有限公司 | Clean production balanced lead making technology |
| CN103205582A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting process |
| CN103205581A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting device |
| CN103388079B (en) * | 2013-07-25 | 2015-06-10 | 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 |
| 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 |
| CN103834817A (en) * | 2013-11-14 | 2014-06-04 | 安徽省华鑫铅业集团金铅分公司 | Combined regenerated lead oxygen-enriched three-blowing energy-saving smelting furnace |
| CN103834817B (en) * | 2013-11-14 | 2016-04-20 | 安徽省华鑫铅业集团金铅分公司 | A kind of assembly type secondary lead oxygen enrichment three blows energy saving smelting-furnace |
| CN103740945A (en) * | 2013-12-31 | 2014-04-23 | 河南豫光金铅股份有限公司 | Method for enriching and recycling cadmium from lead smelting system |
| CN103740945B (en) * | 2013-12-31 | 2016-04-20 | 河南豫光金铅股份有限公司 | A kind of method of enriching and recovering cadmium from plumbous smelting system |
| CN103937991A (en) * | 2014-04-08 | 2014-07-23 | 云南锡业股份有限公司 | Fractional collecting process of lead-smelting soot of top blowing furnace |
| CN104894380A (en) * | 2015-05-18 | 2015-09-09 | 张圣南 | Airtight oxygen-rich negative pressure efficient smelting furnace directional smelting clean production process |
| CN104894380B (en) * | 2015-05-18 | 2016-04-13 | 张圣南 | The directed melting process for cleanly preparing of a kind of closed oxygen-enriched sub-pressure high-efficient smelting furnace |
| CN105485659A (en) * | 2015-11-26 | 2016-04-13 | 湖南华信稀贵科技有限公司 | Water supply pipe network of waste heat boilers |
| CN112239812A (en) * | 2020-09-18 | 2021-01-19 | 中国恩菲工程技术有限公司 | Continuous lead smelting device and continuous lead smelting process |
| CN112921184A (en) * | 2021-01-25 | 2021-06-08 | 江西齐劲材料有限公司 | Pyrometallurgical lead smelting device and process |
| CN113430388A (en) * | 2021-06-18 | 2021-09-24 | 中国恩菲工程技术有限公司 | Short-flow reduction fuming device and method for liquid lead slag, lead smelting system and method |
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Application publication date: 20110427 |