CN1231606C - Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace - Google Patents
Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace Download PDFInfo
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- CN1231606C CN1231606C CNB2003101042357A CN200310104235A CN1231606C CN 1231606 C CN1231606 C CN 1231606C CN B2003101042357 A CNB2003101042357 A CN B2003101042357A CN 200310104235 A CN200310104235 A CN 200310104235A CN 1231606 C CN1231606 C CN 1231606C
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- fuming
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Abstract
The present invention relates to a technology for processing waste slag of a lead/stibium blast furnace by using a fuming furnace, particularly to a technology for comprehensively recovering valuable metals containing zinc, antimony, lead, indium and the like in waste slag. The technology is characterized in that the waste slag of a lead/stibium blast furnace is put in a fuming furnace to complete the process of smelting, conversion and volatilization, i.e. the multiphase reaction of solid, liquid and gas, and the space gas-gas reaction are completed in a single reacting furnace. The reactions in the fuming process comprise the combustion and the gasification reaction of carbon, the fusion reaction of cold burden, and the reduction and the oxidation reaction of metal oxide, and the reduced and volatilized gas enters a cooler followed by smoke gas for cooling and then enter a cloth bag for recovery. Therefore, the technology has the advantages of high metal recovering rate, large processing amount, high mechanization degree and low energy consumption.
Description
Technical field
The present invention relates to a kind of fuming furnace that utilizes and handles the lead stibium blast furnace waste residue, comprehensively reclaims the technology of the fuming comprehensive treating process lead stibium blast furnace slag of valuable metals such as zinc in the waste residue, antimony, lead, indium.
Background technology
Nandan, Guangxi lead and tin metallurgy raw material is the crisp sulphur aluminium antimony ore of composition uniqueness at present, this is spacious when utilizing blast furnace to carry out producing of lead antimony alloy in smelting process, the slag that is produced fails to be utilized effectively owing to metal content is low always, generally is to take to store up on the spot or sell at a low price the cement mill.In today of raw materials for metallurgy worsening shortages, someone carried out ore dressing to this slag, carry out the enrichment of valuable metal with shaking table after attempting to be milled down to certain particle size with ball mill, but this mode is because metal recovery rate low (plumbous, antimony total yield only about 40%), energy consumption is big, the production cost height, thereby fail in industrial effective use.
Summary of the invention
Purpose of the present invention just provides a kind of metal recovery rate height, and treatment capacity is big, the technology of the fuming comprehensive treating process lead stibium blast furnace slag that mechanization degree height and energy consumption are low.
Process program of the present invention is such:
(1) the powdery lead stibium blast furnace slag that is not less than 7% (weight ratio) by zinc content is got the raw materials ready;
(2), press fine coal: particulate state lead stibium blast furnace slag=30-40: the amount of 100 (weight ratios), utilize air that fine coal is blown in the slag in the fuming furnace, the compound reduction volatilization of lead in the slag, antimony, zinc, indium is entered in the flue dust;
(3), the temperature in the control fuming furnace is at 1200 ℃-1320 ℃;
(4), temperature raising stage control air coefficient of excess a=0.8-0.9 in fuming process; At reduction phase, control air coefficient of excess a=0.6-0.7;
(5), the gas that comes out of reduction volatilization enters with flue gas simultaneously and enters bag collection reclaim after the water cooler cooling.
From above-mentioned technology as can be seen, the present invention adopts the fuming furnace converting process, the volatilization process that is that the lead stibium blast furnace waste residue is finished melting in fuming furnace---blowing---can be finished the heterogeneous reaction and space gas---the solid/liquid/gas reactions of solid, liquid, gas in a single Reaktionsofen.The fuming process reaction comprises the burning of carbon and the gasification reaction of carbon, the fusing of cold burden and the reduction of metal oxide and oxidizing reaction.Thereby the advantage that the present invention has is the metal recovery rate height, and treatment capacity is big, and mechanization degree is high and energy consumption is low.
Description of drawings
Accompanying drawing is embodiments of the invention.
Accompanying drawing 1 is fuming melting technology figure of the present invention.
Accompanying drawing 2 is process flow sheets of the present invention.
Embodiment
Concrete technology of the present invention is:
(1) the particulate state lead stibium blast furnace slag that is not less than 7% (weight ratio) by zinc content is got the raw materials ready;
(2), press fine coal: particulate state lead stibium blast furnace slag=30-40: the amount of 100 (weight ratios), utilize air that fine coal is blown in the slag in the fuming furnace, the compound reduction volatilization of lead in the slag, antimony, zinc, indium is entered in the flue dust;
(3), the temperature in the control fuming furnace is at 1200 ℃-1320 ℃;
(4), temperature raising stage control air coefficient of excess a=0.8-0.9 in fuming process; At reduction phase, control air coefficient of excess a=0.6-0.7;
(5), the gas that comes out of reduction volatilization enters with flue gas simultaneously and enters bag collection reclaim after the water cooler cooling.
In above-mentioned technology, the granularity of fine coal is at the 80-200 order, and lead stibium blast furnace slag particle degree 3-5 millimeter is pressed fine coal: particulate state lead stibium blast furnace slag=30-40: the amount of 100 (weight ratios), and utilize air that fine coal is blown in the slag in the fuming furnace.Temperature raising stage control air coefficient of excess a=0.8-0.9 almost completely burns carbon in fuming process, to improve the temperature of slag, duration of blast 80-120 minute; At reduction phase, by regulating coal-air ratio, control air coefficient of excess a=0.6-0.7 is to improve the reducing atmosphere in the stove, to improve metal comprehensive recovery, duration of blast 80-120 minute.The Zn that restores, Pb, SbS, In
2O, InO rise to space, stove middle and upper part and are oxidized to ZnO, PbO, Sb by tertiary air and burning furnace gas
2O
3, In
2O
3, and with stove in the partial oxide that evaporates enter bag collection after entering waste heat boiler cooling and the cooling of table water cooler with flue gas simultaneously, thereby make metals such as lead, antimony, zinc, indium obtain collecting and utilizing.
Control suitable furnace temperature and furnace atmosphere, slag composition, pool depth, duration of blast etc., the metal in the dreg evaporation rate is reached: Pb 95%-98%, Zn 85%-95%, Sb 80%-90%, In75%-80%, the leaded 0.1%-0.2% of the waste residue of generation, antimony＜1%, zinc 1%-2%, indium 0.005%-0.01%, FeO 28%-35%, SiO
220%-25%, CaO 15%-20%, this slag can be directly as the starting material of producing building materials.
(1) material condition:
Pulverized coal particle size 80-200 order, aluminium stibium blast furnace slag particle degree 3-5 millimeter, press fine coal: particulate state lead stibium blast furnace slag=30-40: the amount of 100 (weight ratios) delivers into particulate state lead stibium blast furnace slag in the fuming furnace with disk feeder and belt.
(2) processing parameter:
Temperature is 1200 ℃-1300 ℃ in the stove, the rotating speed of adjusting screw feeder makes coal-supplying amount 1.7-2.0Kg/ minute, and blast volume 9-11Kg/ minute, blast 105-115mmHg, thereby guarantee at oxidation stage coefficient of excess air a=0.8-0.9 duration of blast 90-120 minute.
Brief description of the process of the present invention:
(1) fine coal manufacturing
Bituminous coal is discharged into chapelet opening for feed storehouse, is lifted into coal bunker through chapelet.Through Steel Ball Coal Mill, in coal pulverizer, carry out coal-grinding then with the hot blast of sending here by fine coal drying and burning chamber.Mill back fine coal is sent into mill separator with air-flow, the coarse grain of telling returns coal pulverizer through elephant trunk, fine powder is sent into bagroom with air-flow, and the fines that bagroom is accepted is sent into the fine coal storehouse through worm conveyor, is sent to the fuming furnace blowing through single-volute pump by pressurized air then and uses.
(2) the lead stibium blast furnace slag is discharged into chapelet opening for feed storehouse, improve the input fuming furnace through chapelet and add feed bin, feed disk, worm conveyor under the storehouse, add in the fuming furnace by the fuming furnace filling tube, with by blow for coal bunker from the fine coal that the fuming furnace air port is blown into through screw-type coal distributor.Fuming furnace blowing is the interruption operation that a stove one stove carries out, and every stove working cycle is 280～330min, wherein reinforced fusing and oxidation 180～200min, reduction 90～120min, slagging 15～20min.Fuming furnace when blowing slag temperature is 1200～1300 ℃, and the present invention all handles the cooling solid body slag, and the reinforced melting process time is longer, and to add cold burden smooth for next stove, keeps the liquid slag layer of the 1.0 meters height of having an appointment when slagging tap in the stove.Fuming furnace is slagged tap and is adopted the flush slag shrend, and Water Quenching Slag is dragged for through chapelet and transported slag to after slag is carried the slag storehouse and sell the cement mill outside the venue.The fuming furnace housing is a jacket structure for water, and the top water jacket is the vaporization watercooling jacket, and the bottom water jacket is the water cooling water jacket.The hot flue gas of the dust-laden that fuming furnace is discharged is earlier through blister cooler and surface cooler cooling and depositing dust, dust-laden＜100mg/m behind bagroom again
3, contain SO
2＜500mg/m
3, can enter atmosphere by chimney, the zinc of collection, lead oxides are that main flue dust is a product of the present invention.
Production example of the present invention:
(1), the composition of lead stibium blast furnace slag (weight percent)
| Pb | Zn | In | Sb | S | FeO | SiO 2 | CaO | Ag(g/h) | |
| Example 1 | 298 | 10.10 | 0.071 | 4.85 | 1.31 | 23.56 | 28.53 | 18.62 | 50 |
| Example 2 | 4.98 | 9.90 | 0.069 | 6.35 | 1.48 | 29.70 | 21.21 | 15.91 | 85 |
| Example 3 | 3.94 | 10.45 | 0.08 | 4.50 | 1.93 | 30.60 | 24.40 | 15.73 | 97 |
(2), processing parameter and technico-economical comparison:
1, material condition
Coal powder size 80-200 order, lead stibium blast furnace slag particle degree 3-5mm,
Fine coal: lead stibium blast furnace slag=30-40: 100
2, processing parameter
Interior temperature 1200-1300 ℃ of stove
The rotating speed coal-supplying amount of adjusting screw feeder 1.7-2.0kg/ minute, blast volume 9.0-11kg/ minute, blast 105-115mmHg, thus guarantee oxidation stage air consumption coefficient a=0.8-0.9, duration of blast 90-120 minute.
The rotating speed of adjusting screw feeder makes coal-supplying amount 2.7-3.0kg/ minute, and blast volume 9.0-11kg/ minute, blast 105-115mmHg, thus guarantee reduction phase air consumption coefficient a=0.6-0.7, duration of blast 90-120 minute.
3, material unit consumption
Raw material slag 5.62t/t oxygen powder fine coal 1.70t/t oxygen powder
4, metal recovery rate
Pb 90～95％ Zn 85～90％ In 75～80％ Sb 80～90％
(3) product and composition example
1. the composition example of oxygen powder
| Pb | Zn | In | Sb | S | FeO | SiO 2 | CaO | |
| Example 1 | 15.18 | 48.05 | 0.36 | 23.29 | 1.63 | 3.68 | 3.34 | 2.60 |
| Example 2 | 20.31 | 50.50 | 0.30 | 30.35 | 2.15 | 3.52 | 3.30 | 1.20 |
2. waste residue composition example
| Pb | Zn | ln | Sb | FeO | SiO 2 | CaO | |
| Example 1 | 0.18 | 1.23 | 0.008 | 0.59 | 24.46 | 20.76 | 19.24 |
| Example 2 | 0.10 | 1.76 | 0.01 | 0.79 | 33.40 | 24.51 | 17.94 |
(4) fuming primary device
| Device name | Specification | Auxiliary facility |
| Fuming furnace | Interior molded dimension: long by 1200 * wide by 600, treatment capacity 700～800kg/ stove | 5# Ye Shi blower fan: air quantity 28M 3/ minute, blast 2000mmH 2O |
| The fine coal system | The amount of delivering coal: 1.7～5kg/ minute, spiral device: ￠=65 of delivering coal, L=600 | Wheel box PM400 type, regulated speed motor 2KW |
Subordinate list is the technical qualification and the result of integrated condition test.
Attached: the technical qualification of integrated condition experiment and result
| Sequence number | Lead stibium blast furnace slag ingredient % | Technical qualification | Slag ingredient % | |||||||||
| Zinc | Plumbous | Antimony | Indium | Duration of blast (min) | Blast (mmHg) | Air quantity (m 3/min) | Coal-supplying amount (kg/min) | Zinc | Plumbous | Antimony | Indium | |
| 1 | 10.10 | 3.98 | 4.85 | 0.071 | 120/90 | 110/110 | 11.0/10.6 | 1.7/2.7 | 1.23 | 0.18 | 0.59 | 0.008 |
| 2 | 9.90 | 4.98 | 6.35 | 0.069 | 90/90 | 110/115 | 10.4/11.0 | 1.7/2.7 | 1.76 | 0.10 | 0.70 | 0.010 |
| 3 | 10.45 | 3.94 | 4.50 | 0.080 | 120/120 | 110/105 | 10.2/10.8 | 1.9/3.0 | 0.74 | 0.15 | 0.58 | 0.007 |
| 4 | 8.99 | 2.33 | 5.20 | 0.085 | 120/120 | 105/110 | 10.2/10.6 | 2.0/2.9 | 0.57 | 0.10 | 0.72 | 0.007 |
| 5 | 10.22 | 2.96 | 4.98 | 0.062 | 90/100 | 115/110 | 10.8/10.4 | 1.7/2.7 | 1.58 | 0.12 | 0.64 | 0.008 |
Illustrate: 1, the blowing temperature is 1200～1300 ℃.
2, be oxidation blowing data on the line-dividing, under be reduction blowing data.
Claims (4)
1, a kind of technology of fuming comprehensive treating process lead stibium blast furnace slag is characterized in that:
(1) the particulate state lead stibium blast furnace slag that is not less than 7% (weight ratio) by zinc content is got the raw materials ready;
(2), press fine coal: particulate state lead stibium blast furnace slag=30-40: the amount of 100 (weight ratios), utilize air that fine coal is blown in the slag in the fuming furnace, the compound reduction volatilization of lead in the slag, antimony, zinc, indium is entered in the flue dust;
(3), the temperature in the control fuming furnace is at 1200 ℃-1320 ℃;
(4), temperature raising stage control air coefficient of excess a=0.8-0.9 in fuming process; At reduction phase, control air coefficient of excess a=0.6-0.7;
(5), the gas that comes out of reduction volatilization enters with flue gas simultaneously and enters bag collection reclaim after the water cooler cooling.
2, the technology of fuming comprehensive treating process aluminium stibium blast furnace slag according to claim 1 is characterized in that:
(1), the granularity of fine coal is at the 80-200 order, lead stibium blast furnace slag particle degree 3-5 millimeter, press fine coal: particulate state lead stibium blast furnace slag=30-40: the amount of 100 (weight ratios), utilize air that fine coal is blown in the slag in the fuming furnace, the compound reduction volatilization of lead in the slag, antimony, zinc, indium is entered in the flue dust;
(2), the temperature in the control fuming furnace is at 1200 ℃-1320 ℃;
(3), temperature raising stage control air coefficient of excess a=0.8-0.9 in fuming process; At reduction phase, control air coefficient of excess a=0.6-0.7.
3, the technology of fuming comprehensive treating process lead stibium blast furnace slag according to claim 2 is characterized in that temperature raising stage control air coefficient of excess a=0.8-0.9 in fuming process, duration of blast 80-120 minute; At reduction phase, control air coefficient of excess a=0.6-0.7, duration of blast 80-120 minute.
4, the technology of fuming comprehensive treating process aluminium stibium blast furnace slag according to claim 2 is characterized in that temperature raising stage control air coefficient of excess a=0.8-0.9 in fuming process, duration of blast 90-120 minute; At reduction phase, control air coefficient of excess a=0.6-0.7, duration of blast 90-120 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101042357A CN1231606C (en) | 2003-10-24 | 2003-10-24 | Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101042357A CN1231606C (en) | 2003-10-24 | 2003-10-24 | Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace |
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| Publication Number | Publication Date |
|---|---|
| CN1540006A CN1540006A (en) | 2004-10-27 |
| CN1231606C true CN1231606C (en) | 2005-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100383264C (en) * | 2006-12-26 | 2008-04-23 | 河南豫光金铅股份有限公司 | Oxygen-enriched fuming Zn extraction process of plumbum smelting slag |
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| CN101157994B (en) * | 2007-10-24 | 2010-06-16 | 广西华锡集团股份有限公司 | Oxygen fused bath smelting method for lead-antimony ore |
| CN101839645B (en) * | 2009-08-24 | 2012-12-26 | 中国恩菲工程技术有限公司 | Equipment for recovering valuable metals from zinc-contained slag |
| CN102569838B (en) * | 2012-01-18 | 2015-08-26 | 广东邦普循环科技有限公司 | Method for recycling valuable metals in manganese series waste batteries |
| CN102586611A (en) * | 2012-03-20 | 2012-07-18 | 广西成源矿冶有限公司 | Method for recovering lead, antimony, zinc, tin and indium from lead-antimony grain slag with electric furnace through temperature control by stages |
| CN102634653B (en) * | 2012-05-22 | 2013-11-06 | 云南驰宏锌锗股份有限公司 | Side-blowing material-smelting production method |
| CN104498725A (en) * | 2015-01-12 | 2015-04-08 | 昆明有色冶金设计研究院股份公司 | Process for recovering valuable metals through smelting by blowing oxygen-enriched air into traditional fuming furnace |
| CN106978535B (en) * | 2017-03-20 | 2018-05-18 | 云南驰宏锌锗股份有限公司 | A kind of blow-in method with waste heat boiler fuming furnace |
| CN108707759B (en) * | 2018-05-30 | 2021-04-27 | 天津仁新玻璃材料有限公司 | Method for recovering lead from lead-containing glass |
| CN111850299A (en) * | 2020-06-09 | 2020-10-30 | 云南驰宏锌锗股份有限公司 | Method for treating zinc hydrometallurgy purification slag by fuming furnace |
| CN115418494B (en) * | 2022-09-06 | 2024-01-19 | 湖南水口山有色金属集团有限公司 | Method for recycling lead in CRT lead-containing glass by fuming furnace |
-
2003
- 2003-10-24 CN CNB2003101042357A patent/CN1231606C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383264C (en) * | 2006-12-26 | 2008-04-23 | 河南豫光金铅股份有限公司 | Oxygen-enriched fuming Zn extraction process of plumbum smelting slag |
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|---|---|
| CN1540006A (en) | 2004-10-27 |
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Owner name: HECHI CITY JINTAI RENEWABLE RESOURCE CO., LTD. Free format text: FORMER OWNER: ZINC AND INDIUM INDUSTRY CO., LTD., GUANGXI Effective date: 20051125 |
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Effective date of registration: 20051125 Address after: 547200 Guangxi Nandan County town of new car Patentee after: Hechi Jintai Resource Regeneration Co., Ltd. Address before: 547200 the Guangxi Zhuang Autonomous Region Nandan County Guangxi Han Han zinc indium Co., Ltd. Patentee before: Zinc and Indium Industry Co., Ltd., Guangxi |
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