CN85105034A - Shuiko mountain method of smelt lead - Google Patents
Shuiko mountain method of smelt lead Download PDFInfo
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- CN85105034A CN85105034A CN 85105034 CN85105034A CN85105034A CN 85105034 A CN85105034 A CN 85105034A CN 85105034 CN85105034 CN 85105034 CN 85105034 A CN85105034 A CN 85105034A CN 85105034 A CN85105034 A CN 85105034A
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Abstract
Shuiko mountain method of smelt lead belongs to the nonferrous heavy metal melting method.Furnace charge with concentrate of lead sulfide ore, flux, flue dust, coal dust and other lead-containing materials composition, through behind the mixing granulation not drying add converting furnace, after being blown into oxygen and carrying out melting, output part lead bullion, and the slag that has a part of lead bullion enters electric furnace, in electric furnace, spray into coal dust and carry out retailoring, the output metallic lead by pulverized coal gun.If raw material contains the zinc height, according to the difference of control reducing degree, can be from electric furnace output metallic zinc or zinc oxide.
Description
The present invention belongs to the nonferrous heavy metal melting method.
Existing refining splicer skill all exists shortcoming separately, and the some of them shortcoming is anxious to be solved, as pollution and operator to environment lead poisoning etc. takes place easily, and this class problem is particularly outstanding to traditional sinter machine-blast furnace refining splicer skill.In addition, traditional technology need be used expensive coke, production cost height.The lead bullion sulfur-bearing higher (2-4%) of the electrosmelting of Sweden ripple Lipton company (seeing " COMPARISON OF COMMON FEATURES OF PYROMETALLURGICAL VERSUS HYDROMETALLURGICAL LEAD PROCESSES " BY H.REIMERS AND JOHN C.TAYLOR) output needs just can carry out refining through the blowing desulfurization, technical process is long, the power consumption height.The top blown converter melting (TBRC) of glass Lipton company is the discontinuity production method, promptly periodically carries out oxidation and retailoring so the SO in the flue gas in a stove
2Fluctuation of concentration is bigger, causes acid-making process complicated.The oxygen cyclone smelting (KIVCET) of the Soviet Union and the Outokumpu flash smelting method of Finland to the moisture requirement of furnace charge tight (＜0.5%), must be carried out depth drying, cause the procedure for preparation complexity.The QSL method of West Germany LURGI is to carry out in a rotatable smelting furnace, is divided into oxidation panel and reduction section by partition wall, and this stove should not use the water-cooled element, so the fire proof material of furnace lining life-span is shorter; Because the productivity of reduction section is low, furnace volume is bigger, has increased heat dissipation capacity again; Reduction section uses coal dust to make reductive agent, sprays into the molten bath by the bottom blowing nozzle, and nozzle easily is worn, and changes the operation more complicated of nozzle; The reduction section flue gas contains a large amount of CO
2, make the high density SO of oxidation panel output
2Flue gas is diluted, uses kiln gas SO
2Concentration only maintains 10-15%.
The objective of the invention is to overcome the shortcoming of existing melting method, create a kind of even more ideal lead smelting process.Be characterized in the granular furnace charge that to make, drying does not promptly add in the converting furnace that can rotate along transverse axis, by the oxygen nozzle that is contained in furnace bottom the molten bath is blown into oxygen, make the molten bath cause fierce stirring, melt and take place oxidizing reaction in the molten bath of furnace charge about 1200 ℃ rapidly, this process can be carried out under self-heat condition substantially, and postcombustion seldom goes out kiln gas and contains SO
2Concentration can be in order to make liquid SO up to 30%
2Or elementary sulfur.The slag of converting furnace continuously flows into electric furnace, under 1200-1300 ℃ of temperature, reduce, make the plumbous oxide in the slag be reduced into metallic lead, reductive agent-coal dust is blown into the molten bath by immersion consumable spray gun, adjusting is blown into the reducing degree that the coal dust amount not only can be controlled zinc oxide in the slag, can also from the electric furnace furnace gas zinc be reclaimed with metal shape or zinc oxide.Pulverized coal gun also is blown into oxygen or oxygen-rich air by pipe core except that coal dust is sprayed into, make a part of coal dust burning, supplies with molten bath part heat to reduce power consumption.Spray gun is made up of the stainless steel sleeve pipe, along with the scaling loss of ejiction opening, regulates hoisting appliance, and the degree of depth that inserts it into the molten bath keeps constant, after the spray gun scaling loss arrives to a certain degree, can change.
Brief description of drawings.
Accompanying drawing 1 is the technological process of production, and accompanying drawing 2 is a converting furnace, and accompanying drawing 3 is the bottom blowing spray gun, and accompanying drawing 4 is an electric reduction furnace.
I granulator among Fig. 1, II converting furnace, III electric furnace are the capital equipment of Shuiko mountain method of smelt lead. The furnace charge a that is formed by lead concentrate, flux, flue dust, coal dust and other raw material containing lead; be made for granular furnace charge b through the granulator I; add continuously from the charge door 1 of converting furnace II; the nozzle 2 of oxygen by being installed in furnace bottom is blown into the molten bath continuously, output lead bullion d; slag C continuously flows into the electric furnace III; carry out reduction melting and precipitate and separate in electric furnace, the lead bullion d of output is sent to refining with the lead bullion of converting furnace output. Slag e send fuming furnace further to reclaim zinc or discarded.
Converting furnace II output contain SO
2The flue gas f that concentration is higher is after waste heat boiler and dedusting, in order to make the sulfur-bearing product.Electric furnace flue gas g contains more CO, can further utilize its latent heat through waste heat boiler and dedusting, also can add air combustion in boiler.
The present invention can also utilize the existing blast furnace of traditional method lead refinery to replace electric furnace, handles the converting furnace slag C that solidifies through overcooling.
Shuiko mountain method of smelt lead has the following advantages:
1. set-up procedure and the equipment before the melting is simple, so Production Flow Chart is short, the equipment of use is few.
2. oxidation and reduction process have all adopted the molten bath to spray melting, have the top condition of mass-and heat-transfer, fusion process can be finished, the productivity height in small device.
3. owing to adopt oxygen to carry out melting, the exhaust gas volumn of generation is less, has reduced kiln gas and take heat out of, has improved hot effective rate of utilization; Because melting equipment is little, heat lost by radiation also reduces relatively again, thereby improves the utilization ratio of heat, has reduced energy consumption.
4. owing to adopt oxygen to carry out melting, in converting furnace, carry out sweetening process completely, make SO in the furnace gas
2Concentration reaches 30% or higher, therefore utilizes flue gas to make liquid SO
2Or the condition of sulphur is better.
5. the present invention uses electric furnace as reduction apparatus, and furnace wall is convenient to install the water-cooled element, and lining life is improved, can the too high refractory materials of functional quality, and to adapt to the production level of China's refractory materials.
Claims (3)
1, the furnace charge of forming by concentrate of lead sulfide ore (or metallic sulfides such as copper ore concentrates, nickel ore concentrate), flux, flue dust, coal dust and other leaded (or cupric, nickel) material, the method of melting in smelting furnace, it is characterized in that, its furnace charge a must dryly directly not add the converting furnace II after granulating, carry out oxidizing semlting in converting furnace, the slag C of institute's output flows directly into the electric furnace III, carries out dilution in electric furnace, also blowing slag C can be cast bulk, utilize blast furnace to carry out retailoring.
2, converting furnace II according to claim 1; it is characterized in that the type of furnace is horizontal; can rotate along transverse axis; the oxygen nozzle is in the bottom, molten bath when blowing, nozzle is made up of the stainless steel bilayer sleeve, and oxygen is blown into by pipe core; doing protection with nitrogen is blown into from peripheral sleeve pipe; also be provided with charging opening on the shaft, siphon lead taphole, overflow slag notch and exhanst gas outlet.
3, the electric furnace illustrated according to claim 1, it is characterized in that electric furnace one end is provided with the pulverized coal gun of being made up of stainless steel sleeve, in order in the molten bath, to spray into coal dust and oxygen-rich air, the furnace wall of molten bath part is provided with copper water jacket, inner lining refractory block, molten bath one end has siphon escape orifice slag overflow escape orifice and flue gas escape orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105034 CN85105034A (en) | 1985-07-03 | 1985-07-03 | Shuiko mountain method of smelt lead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105034 CN85105034A (en) | 1985-07-03 | 1985-07-03 | Shuiko mountain method of smelt lead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85105034A true CN85105034A (en) | 1986-12-31 |
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ID=4794213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85105034 Pending CN85105034A (en) | 1985-07-03 | 1985-07-03 | Shuiko mountain method of smelt lead |
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| Country | Link |
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| CN (1) | CN85105034A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200777B (en) * | 2007-09-24 | 2010-06-16 | 云南锡业集团（控股）有限责任公司 | Method and equipment for continuous smelting of lead sulphide concentrate |
| CN102102152A (en) * | 2009-12-17 | 2011-06-22 | 云南冶金集团股份有限公司 | Method for smelting lead by reducing lead-rich slags |
| CN102618729A (en) * | 2012-03-15 | 2012-08-01 | 中南大学 | Smelting method and device for molten oxidized lead slag |
| CN101839625B (en) * | 2009-08-14 | 2013-11-13 | 中国恩菲工程技术有限公司 | Lead skim reducing furnace |
| CN104675116A (en) * | 2013-12-03 | 2015-06-03 | 五冶集团上海有限公司 | Improved installation method of flash converting furnace |
| CN105734295A (en) * | 2016-03-17 | 2016-07-06 | 安徽省华鑫铅业集团有限公司 | Flux special for refining of carbonation lead plaster of secondary lead |
| CN111996374A (en) * | 2020-07-25 | 2020-11-27 | 安阳岷山环能高科有限公司 | Method for extracting metal lead and zinc by bottom blowing oxygen-enriched self-heating smelting-electric melting direct reduction |
| CN111996388A (en) * | 2020-07-25 | 2020-11-27 | 安阳岷山环能高科有限公司 | Method for extracting valuable metals from lead-zinc mixed ore |
| CN113201655A (en) * | 2021-03-13 | 2021-08-03 | 江西铜业铅锌金属有限公司 | Lead smelting process for improving PbS reduction efficiency |
-
1985
- 1985-07-03 CN CN 85105034 patent/CN85105034A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200777B (en) * | 2007-09-24 | 2010-06-16 | 云南锡业集团（控股）有限责任公司 | Method and equipment for continuous smelting of lead sulphide concentrate |
| CN101839625B (en) * | 2009-08-14 | 2013-11-13 | 中国恩菲工程技术有限公司 | Lead skim reducing furnace |
| CN102102152A (en) * | 2009-12-17 | 2011-06-22 | 云南冶金集团股份有限公司 | Method for smelting lead by reducing lead-rich slags |
| CN102618729A (en) * | 2012-03-15 | 2012-08-01 | 中南大学 | Smelting method and device for molten oxidized lead slag |
| CN102618729B (en) * | 2012-03-15 | 2013-10-09 | 中南大学 | Smelting method and device for molten oxidized lead slag |
| CN104675116A (en) * | 2013-12-03 | 2015-06-03 | 五冶集团上海有限公司 | Improved installation method of flash converting furnace |
| CN104675116B (en) * | 2013-12-03 | 2016-09-28 | 五冶集团上海有限公司 | A kind of flash converting furnace installation method of improvement |
| CN105734295A (en) * | 2016-03-17 | 2016-07-06 | 安徽省华鑫铅业集团有限公司 | Flux special for refining of carbonation lead plaster of secondary lead |
| CN105734295B (en) * | 2016-03-17 | 2018-01-12 | 安徽省华鑫铅业集团有限公司 | One kind carbonating lead plaster smelting process |
| CN111996374A (en) * | 2020-07-25 | 2020-11-27 | 安阳岷山环能高科有限公司 | Method for extracting metal lead and zinc by bottom blowing oxygen-enriched self-heating smelting-electric melting direct reduction |
| CN111996388A (en) * | 2020-07-25 | 2020-11-27 | 安阳岷山环能高科有限公司 | Method for extracting valuable metals from lead-zinc mixed ore |
| CN113201655A (en) * | 2021-03-13 | 2021-08-03 | 江西铜业铅锌金属有限公司 | Lead smelting process for improving PbS reduction efficiency |
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