CN104946899B - Edge transmission top-blown converter and depleted sedimentation furnace combined lead dross treatment method - Google Patents
Edge transmission top-blown converter and depleted sedimentation furnace combined lead dross treatment method Download PDFInfo
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- CN104946899B CN104946899B CN201510298270.XA CN201510298270A CN104946899B CN 104946899 B CN104946899 B CN 104946899B CN 201510298270 A CN201510298270 A CN 201510298270A CN 104946899 B CN104946899 B CN 104946899B
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Abstract
The invention belongs to the technical field of metallurgy, and particularly relates to an edge transmission top-blown converter and depleted sedimentation furnace combined lead dross treatment method. The edge transmission top-blown converter and depleted sedimentation furnace combined lead dross treatment method comprises the following steps of (1) preparing and feeding materials, (2) smelting and (3) blowing, wherein in Step (1) 87-92% of lead dross, 3-5% of coke, 1-2% of scrap iron, and 4-6% of sodium carbonate by mass percent are uniformly mixed, and added to an edge transmission top-blown converter for 2-3 times; in step (2), the smelting is performed for 3-4h with the temperature of the edge transmission top-blown converter kept at 1000-1200 degrees, and a copper and dross mixed melt after the smelting is shifted to a depleted sedimentation furnace; and in Step (3), the blowing is performed for 2-4h with the temperature of the depleted sedimentation furnace kept at 1000-1200 degrees, and after stable liquid lead, copper matte and dregs produced in the depleted sedimentation furnace are laminated, copper sulfur, crude lead and slags are separated out. Compared with the existing lead dross treatment method, the edge transmission top-blown converter and depleted sedimentation furnace combined lead dross treatment method reduces the energy consumption and the consumption of the auxiliary materials (the coke, scrap iron and sodium carbonate) greatly, and the total cost is reduced by around 50%.
Description
Technical field
The invention belongs to metallurgical technology field is and in particular to a kind of Edge-Transmission top-blown converter dilution sedimentation furnace combines place
The method of reason lead scum silica frost.
Background technology
The technique of the process lead scum silica frost of domestic employing at present mainly has thermal process and wet processing, wherein thermal process master
Including reflection oven process, converter process and electric furnace process, wet processing mainly includes the acid-hatching of young eggs, ammonia leaching process and alkaline leaching.
1st, when reverberatory furnace adds blast-furnace method process lead scum silica frost, the response rate is higher, leaded relatively low in matte, copper-lead ratio
Up to 5～9, and this method equipment investment is few, material strong adaptability.But furnace temperature fluctuation is big in process of production, due to basic slag
Presence stove service life relatively low, due to being that two-step process is smelted, long flow path, heat utilization rate is low, high energy consumption and environment is poor；
2nd, converter smelting process process lead scum silica frost when the thermal efficiency and stove service life higher, production environment is good, survival rate and
Mechanization degree is higher, and using liquid fuel heat, oxygen-enriched combustion-supporting, thus energy consumption is relatively low, copper-lead is than low.Electric furnace smelting process flue gas
Amount is little, and metal loss is few, high working efficiency, but power consumption is larger, and the region limitation of use is larger；
3rd, when the acid-hatching of young eggs processes lead scum silica frost, the separation degree of lead bronze is higher, and investment is less, but produces big in process of production
The lead skim of amount, the more difficult control of liquid-solid ratio, waste is few, needs after-treatment.Wastewater treatment is also larger problem simultaneously；
4th, ammonia leaching process can get fine copper and two kinds of products of copper sulfate, and production process temperature is low, efficiency high, and production process is easy to
Control.But the use of ammonia needs equipment corrosion resistance is had higher requirements, the use of ammonia simultaneously proposes very to secure context
High request；
5th, alkaline leaching Cu-Pb separation effect is good, and technological process is long, and investment is larger, and the lead oxide of output needs further simultaneously
Processing；
6th, thermal process generally existing lead bronze separates thorough, and lead bullion output capacity is low, the shortcomings of high energy consumption, and wet processing
Although copper-lead can preferably be separated, solid-liquor separation in process of production is cumbersome；
7th, reverberatory furnace is high energy consumption, low environmental protection, is that national explicit order eliminates technique now, side-blown converter has vertical and horizontal at present
Two kinds all in test, and result of the test is not yet clear and definite.
Content of the invention
The purpose of the present invention be for the problem that prior art exists provide a kind of efficiently, energy-saving and environmental protection, low dust rate,
The high lead scum treatment method of the response rate.
A kind of method of Edge-Transmission top-blown converter dilution sedimentation furnace Combined Treatment lead scum silica frost, comprises the following steps：
（1）Dispensing feeds intake：By percentage to the quality, by 87～92% lead scum silica frost, 3～5% coke, 1～2% iron filings, 4
～6% soda uniformly mixes, and adds in Edge-Transmission top-blown converter for 2～3 times；
（2）Melting：Keep 1000～1200 DEG C of melting 3～4h of Edge-Transmission top-blown converter temperature, by copper dross slag after melting
Blend melt proceeds to dilution sedimentation furnace；
（3）Blowing：Keep 1000～1200 DEG C of blowing 2～4h of dilution sedimentation furnace temperature, produce stable in dilution sedimentation furnace
Lead liquid, after matte and slag layering, separate copper sulfur, lead bullion and slag；
Preferably, described step（1）Middle lead scum silica frost batch mixing by percentage to the quality, lead scum silica frost 88%, coke 5%, iron filings 2%,
Soda 5%；（Optimal proportion）
Described step（1）In on an hourly basis 8～12t lead scum silica frost batch mixing amount feed intake；
Described step（2）In, Edge-Transmission top-blown converter blasts oxygen, compressed air and natural gas；Described oxygen flow
80～160m3/h, compressed air require 100～200m3/h, gas discharge 40～80m3/h；
Described step（3）In, blast oxygen, compressed air and natural gas to keeping dilution sedimentation furnace；Described oxygen flow
40～110m3/h, compressed air require 80～150m3/h, gas discharge 20～50m3/h;
The flue gas of described Edge-Transmission top-blown converter and the generation of dilution sedimentation furnace is gathered dust by surface-cooler, pulse bag
Device, gained flue dust return to step（2）Recycling, gained tail gas carries out antacid.
The present invention adopts " soda-iron filings " technique, and technical process is：Ship type feeder dispensing, charging edge pass
Dynamic top-blown converter melting sedimentation furnace is settlement separate（Blowing）Output lead bullion, copper matte regulus and slag.
Lead scum silica frost used, soda, coke and iron filings etc. by Automobile Transportation to main building, after each material is filled to ship type feeder
Through weighbridge weigh complete dispensing, then crane ship type feeder is hung to complete at charging aperture above oxygen-enriched top blowing converter environmental protection petticoat pipe
Become charging.
Lead scum silica frost carries out melting first in Edge-Transmission top-blown converter and separates, and Edge-Transmission top-blown converter uses natural gas
As fuel, high concentration oxygen-enriched air smelting, in-furnace temperature is less than 1200 DEG C, and Edge-Transmission top-blown converter is configured with a melting rifle
With a blowing rifle, the melting that melting rifle is used for lead scum silica frost separates, and blowing rifle can be used for the blowing of follow-up copper matte regulus；Fusion process
In, the lead oxide in lead scum silica frost can be reduced into lead and enter lead bullion phase by coke；Soda can make sodium arsenical copper sulfonium, and makes part arsenic, antimony
Slag making removes；Iron filings can reduce the lead in copper matte regulus and slag, thus improving the copper-lead ratio of copper matte regulus;Edge-Transmission top-blown converter melting
The lead bullion, copper matte regulus and the slag that are formed in journey can not complete to separate during discharging well, therefore need first to send by chute
Carry out settlement separate to sedimentation furnace；With existing bottom blowing after the technique flue gas water cooled flue cooling that Edge-Transmission top-blown converter produces
Kiln gas send antacid in the lump.
Sedimentation furnace is used natural gas as fuel, high concentration oxygen-enriched air smelting, and in-furnace temperature is less than 1200 DEG C；In sedimentation furnace
Melt agitation is little, and lead bullion, copper matte regulus and slag can complete to separate in stove well；Sedimentation furnace arranges a siphon port and is used for putting slightly
Lead, lead bullion is put to lead stamp, then delivers to existing fire refining of crude lead workshop section；Sedimentation furnace setting copper matte regulus mouth, each one of cinder notch are used for
Put copper matte regulus and slag, copper matte regulus and slag all place steamed bun, copper matte regulus cools down, crushes and sell outside rear, and slag returns existing bottom convertor feeding
System；Antacid is sent in the lump with existing bottom blowing kiln gas after sedimentation kiln gas water cooled flue cooling.For obtaining preferably economic effect
Benefit, sedimentation furnace has reserved blowing mouth, can to carry out the blowing further of copper matte regulus in the case of producing affluence.
The invention has the advantages that：
The present invention processes the more existing method energy consumption processing lead scum silica frost of method and the adjuvant of lead scum silica frost（Coke, iron filings, pure
Alkali）Consumption is greatly reduced, and totle drilling cost reduces by 50% about；The lead recovery of the present invention is high, and copper-lead ratio is high, and dust rate is significantly
Reduce, decrease smoke dust circulation amount simultaneously；The present invention also has that material usability is wide, high degree of automation, and labor intensity is low, ring
The advantages of protected.
As can be seen from the above table, with respect to Blast Furnace Method, reflection oven process and converter process, energy consumption of the present invention reduce by 40% with
On, copper-lead ratio reaches 6～8：1, dust rate reduces by 50～90%, and lead bullion yield % reaches 85～94, and lead recovery reaches 97～98%.
Brief description
Fig. 1 is the process chart of the present invention.
Specific embodiment
Embodiment 1
Select model 1m3Edge-Transmission top-blown converter and model 3.5 dilution sedimentation furnace, according to following technology
Parameter testing equipment：Oxygen flow 100m in Edge-Transmission top-blown converter3/ h, compressed air require 100m3/ h, gas discharge
60m3/h；Oxygen flow 60m in dilution sedimentation furnace3/ h, compressed air require 80m3/ h, gas discharge 40m3/h;
After debugging finishes, process lead scum silica frost in the steps below：
By percentage to the quality, by ship type feeder dispensing by 88% lead scum silica frost, 5% coke, 2% iron filings, 5% soda
Uniformly mix, lead dross mixture material continuous uniform added in Edge-Transmission top-blown converter, 10 tons are fed intake on an hourly basis,
Complete 5 tons of charging operations.
After completing to feed operation, keep 1000～1200 DEG C of Edge-Transmission top-blown converter temperature that lead dross mixture material is melted
Refining 3.5h, obtains lead scum silica frost blend melt, gained lead scum silica frost blend melt is proceeded in dilution sedimentation furnace, keeps dilution sedimentation furnace
1200 DEG C of blowing 4h of temperature, after producing stable lead liquid, matte and slag layering in dilution sedimentation furnace, separate copper sulfur, lead bullion
And slag.
The flue gas of Edge-Transmission top-blown converter and the generation of dilution sedimentation furnace passes through surface-cooler, pulse wave bagroom,
Gained flue dust Returning smelting link reuses, and gained tail gas carries out antacid.
Per tour processes 10 tons of lead scum silica frost, produces 6.5 tons of lead bullion, produces 2.55 tons of copper sulfur, 0.625 ton of slag, per tour natural gas
Amount 370m3, amount of oxygen 590m3, output lead bullion grade 97%, output lead bullion cupric is below 0.5%, output copper sulfur leaded less than 10%.
Embodiment 2
Select model 1m3Edge-Transmission top-blown converter and model 3.5 dilution sedimentation furnace, according to following technology
Parameter testing equipment：Oxygen flow 90m in Edge-Transmission top-blown converter3/ h, compressed air require 100m3/ h, gas discharge
55m3/h；Oxygen flow 60m in dilution sedimentation furnace3/ h, compressed air require 60m3/ h, gas discharge 40m3/h;
After debugging finishes, process lead scum silica frost in the steps below：
By percentage to the quality, by ship type feeder dispensing by 89% lead scum silica frost, 4% coke, 2% iron filings, 5% soda
Uniformly mix, lead dross mixture material continuous uniform added in Edge-Transmission top-blown converter, 10 tons are fed intake on an hourly basis,
Complete 6 tons of charging operations.
After completing to feed operation, keep 1000～1200 DEG C of Edge-Transmission top-blown converter temperature that lead dross mixture material is melted
Refining 3h, obtains lead scum silica frost blend melt, gained lead scum silica frost blend melt is proceeded in dilution sedimentation furnace, keeps dilution sedimentation furnace temperature
Degree 1200 DEG C blowing 4h, when produce in dilution sedimentation furnace stable lead liquid, matte and slag layering after, separate copper sulfur, lead bullion and
Slag.
The flue gas of Edge-Transmission top-blown converter and the generation of dilution sedimentation furnace passes through surface-cooler, pulse wave bagroom,
Gained flue dust Returning smelting link reuses, and gained tail gas carries out antacid.
Per tour processes 12 tons of lead scum silica frost, produces 7.2 tons of lead bullion, produces 3.36 tons of copper sulfur, 1.05 tons of slag, per tour amount of natural gas
325m3, amount of oxygen 630m3, output lead bullion grade 97%, output lead bullion cupric is below 0.7%, output copper sulfur leaded less than 11%.
Embodiment 3
Select model 1m3Edge-Transmission top-blown converter and model 3.5 dilution sedimentation furnace, according to following technology
Parameter testing equipment：Oxygen flow 120m in Edge-Transmission top-blown converter3/ h, compressed air require 90m3/ h, gas discharge
70m3/h；Oxygen flow 70m in dilution sedimentation furnace3/ h, compressed air require 50m3/ h, gas discharge 50m3/h;
After debugging finishes, process lead scum silica frost in the steps below：
By percentage to the quality, by ship type feeder dispensing by 88% lead scum silica frost, 5% coke, 2% iron filings, 5% soda
Uniformly mix, lead dross mixture material continuous uniform added in Edge-Transmission top-blown converter, 10 tons are fed intake on an hourly basis,
Complete 5 tons of charging operations.
After completing to feed operation, keep 1000～1200 DEG C of Edge-Transmission top-blown converter temperature that lead dross mixture material is melted
Refining 4h, obtains lead scum silica frost blend melt, gained lead scum silica frost blend melt is proceeded in dilution sedimentation furnace, keeps dilution sedimentation furnace temperature
Degree 1200 DEG C blowing 4h, when produce in dilution sedimentation furnace stable lead liquid, matte and slag layering after, separate copper sulfur, lead bullion and
Slag.
The flue gas of Edge-Transmission top-blown converter and the generation of dilution sedimentation furnace passes through surface-cooler, pulse wave bagroom,
Gained flue dust Returning smelting link reuses, and gained tail gas carries out antacid.
Per tour processes 10 tons of lead scum silica frost, produces 7 tons of lead bullion, produces 2.1 tons of copper sulfur, 0.6 ton of slag, per tour amount of natural gas
480m3, amount of oxygen 760m3, output lead bullion grade 97%, output lead bullion cupric is below 0.5%, output copper sulfur leaded less than 10%.
Claims (4)
1. a kind of method of Edge-Transmission top-blown converter dilution sedimentation furnace Combined Treatment lead scum silica frost it is characterised in that：Including with
Lower step：
（1）Dispensing feeds intake：By percentage to the quality, by 87～92% lead scum silica frost, 3～5% coke, 1～2% iron filings, 4～6%
Soda uniformly mixes, and adds in Edge-Transmission top-blown converter for 2-3 time；
（2）Melting：Keep 1000～1200 DEG C of meltings of Edge-Transmission top-blown converter temperature, persistent period 3-4 h, by copper after melting
Scum silica frost blend melt proceeds to dilution sedimentation furnace；
（3）Blowing：Keep dilution sedimentation 1200 DEG C of furnace temperature blowing 2～4h, when producing stable lead liquid, ice in dilution sedimentation furnace
After copper and slag layering, isolate copper matte regulus, lead bullion and slag；
Described step（2）In, Edge-Transmission top-blown converter blasts oxygen, compressed air and natural gas；Described oxygen flow 80～
160m3/ h, compressed air require 100～200m3/ h, gas discharge 40～80m3/h；
Described step（3）In, blast oxygen, compressed air and natural gas to keeping dilution sedimentation furnace；Described oxygen flow 40～
110m3/ h, compressed air require 80～150m3/ h, gas discharge 20～50m3/h.
2. a kind of method of Edge-Transmission top-blown converter dilution sedimentation furnace Combined Treatment lead scum silica frost as claimed in claim 1, its
It is characterised by：Described step（1）Middle lead scum silica frost batch mixing by percentage to the quality, lead scum silica frost 88%, coke 5%, iron filings 2%, soda
5%.
3. a kind of method of Edge-Transmission top-blown converter dilution sedimentation furnace Combined Treatment lead scum silica frost as claimed in claim 1, its
It is characterised by：Described step（1）In feed intake by every stove 4～6t lead scum silica frost batch mixing amount.
4. a kind of method of Edge-Transmission top-blown converter dilution sedimentation furnace Combined Treatment lead scum silica frost as claimed in claim 1, its
It is characterised by：The flue gas of described Edge-Transmission top-blown converter and the generation of dilution sedimentation furnace passes through surface-cooler, pulse dust collector,
Gained flue dust return to step（2）Recycling, gained tail gas carries out antacid.
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| CN105838894A (en) * | 2016-05-13 | 2016-08-10 | 中国恩菲工程技术有限公司 | Process for treating copper dross through oxygen enrichment top-blowing smelting-settling separation |
| CN106011497B (en) * | 2016-07-21 | 2018-01-02 | 株洲冶炼集团股份有限公司 | A kind of method that lead bullion is reclaimed from lead copper matte |
| CN108461849A (en) * | 2017-02-20 | 2018-08-28 | 中国瑞林工程技术有限公司 | The processing system of lead-acid battery and its application |
| CN109022809B (en) * | 2018-07-27 | 2020-05-22 | 郴州雄风环保科技有限公司 | Process for reducing and smelting copper dross by using sodium organic acid-scrap iron method |
| CN111154984B (en) * | 2020-01-19 | 2022-03-15 | 河南豫光金铅股份有限公司 | Method for separating lead, arsenic and copper from high-lead high-arsenic copper slag |
| CN114015875A (en) * | 2021-09-18 | 2022-02-08 | 济源市万洋冶炼(集团)有限公司 | Method for lead-copper co-smelting and dilution treatment of lead-copper mixed material |
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| CN101358286B (en) * | 2008-09-25 | 2010-06-16 | 昆明理工大学 | Method for treating copper scum using converter |
| JP5049311B2 (en) * | 2009-03-31 | 2012-10-17 | パンパシフィック・カッパー株式会社 | Method and system for dry treatment of converter slag in copper smelting |
| CN103937990A (en) * | 2014-03-25 | 2014-07-23 | 云南锡业股份有限公司 | Oxygen-rich blowing technology for producing coarse lead and matte from lead matte in top-blowing furnace |
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