WO2020057266A1 - Dispositif de fusion de cuivre - Google Patents

Dispositif de fusion de cuivre Download PDF

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Publication number
WO2020057266A1
WO2020057266A1 PCT/CN2019/098643 CN2019098643W WO2020057266A1 WO 2020057266 A1 WO2020057266 A1 WO 2020057266A1 CN 2019098643 W CN2019098643 W CN 2019098643W WO 2020057266 A1 WO2020057266 A1 WO 2020057266A1
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WO
WIPO (PCT)
Prior art keywords
furnace body
copper
layer
smelting device
slag
Prior art date
Application number
PCT/CN2019/098643
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English (en)
Chinese (zh)
Inventor
李锋
尉克俭
黎敏
陆金忠
李建辉
曹珂菲
郝小红
Original Assignee
中国恩菲工程技术有限公司
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Publication date
Application filed by 中国恩菲工程技术有限公司 filed Critical 中国恩菲工程技术有限公司
Priority to EA202090703A priority Critical patent/EA202090703A1/ru
Publication of WO2020057266A1 publication Critical patent/WO2020057266A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0028—Smelting or converting
    • C22B15/003—Bath smelting or converting
    • 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

Definitions

  • the present disclosure relates to the field of non-ferrous metallurgy, and in particular, to a copper smelting device.
  • the fixed side-blown melting furnace that has been put into operation is only 100,000 t / a copper, and the largest side-blown furnace currently designed is only 200,000 t / a copper, which has not yet been put into operation. If the annual output is 300,000 to 500,000
  • the t / a copper scale that is, the annual processing of copper concentrates of 1.5 to 2 million t / a, usually requires at least two side-blown copper production lines, covering a large area, large equipment, large investment, large number of operators, and high operating costs.
  • One of the main objectives of the present disclosure is to overcome at least one of the drawbacks of the related art and provide a copper smelting device to meet the needs of large-scale processing of concentrates.
  • a copper smelting device which includes a furnace body, a charging port, a smoke outlet, a slag outlet, a copper grate, and a primary air vent.
  • a copper grate layer and slag are sequentially arranged from bottom to top in the furnace.
  • a feeding port is provided on the top wall of the furnace body; a smoke outlet is provided on the top wall of the furnace body; a slag outlet is provided on one end of the furnace body; The end of the furnace body opposite to the slag outlet, the copper grate opening is located at the bottom of the copper grate layer; the primary air outlet is located on the corresponding side wall of the slag layer of the furnace body, and is used for The slag layer is blown with oxygen-enriched air, and the widthwise dimension of the inner side wall corresponding to the slag layer is greater than 2.5m and less than or equal to 4.5m.
  • the dimension in the height direction of the inner cavity of the furnace body is 6m to 8m.
  • a widthwise dimension of the gas layer is 4.1m-7m.
  • a blowing pressure of the primary tuyere is 0.12 MPa to 0.3 MPa.
  • the copper smelting device further includes a secondary air outlet disposed on a side wall corresponding to the gas layer.
  • the number of the primary air vents is plural, and the distance between adjacent primary air vents is 500-600 mm.
  • a partition wall is provided in an inner cavity of the copper smelting device along a width direction, and the partition wall divides the inner cavity into a melting zone and a settlement zone, and the partition wall and the There is a space between the top walls of the furnace body.
  • the length of the melting zone is 12m-20m.
  • the settling area is provided with a heating electrode and / or a burner for holding or heating the settling area.
  • the width dimension of the inner side wall corresponding to the slag layer of the copper smelting device is greater than 2.5 m and less than or equal to 4.5 m, which can expand single furnace processing Concentrate scale, which improves labor efficiency and reduces operating costs.
  • Fig. 1 is a plan view of a copper smelting device according to an exemplary embodiment.
  • Fig. 2 is a cross-sectional view taken along the line A-A of the copper smelting apparatus in Fig. 1.
  • Fig. 3 is a B-B sectional view of the copper smelting apparatus in Fig. 1.
  • a copper smelting device which includes a furnace body 100, a charging port 101, a smoke outlet 106, a slag outlet 102, a copper grate 103, and a primary air outlet 104.
  • a copper rhenium layer 112, a slag layer 113, and a gas layer 114 are sequentially arranged from bottom to top.
  • the copper rhenium layer 112 is located at the bottom of the inner cavity of the furnace body 100, and on the corresponding side wall of the copper rhenium layer 112.
  • a copper gate 103 may be provided, and the copper gate 103 may be located at the bottom of the copper gate layer 112.
  • the copper gate 103 may be disposed at an end of one end of the furnace body 100.
  • the feeding port 101 may be disposed on the top wall of the furnace body 100, and there may be multiple feeding ports 101 distributed on the top wall.
  • the feeding port 101 may be 3-6.
  • the slag outlet 102 may be disposed at an end of the furnace body 100 opposite to the copper grate 103.
  • the primary air outlet 104 is located on a side wall corresponding to the slag layer 113 of the furnace body 100, and can be used to blow oxygen-rich air into the slag layer 113.
  • the width of the inner side wall corresponding to the slag layer 113 The dimension of the direction W is greater than 2.5 m and less than or equal to 4.5 m.
  • the concentration of the oxygen-enriched air is 70% to 95%, but is not limited thereto, and may be selected according to actual needs.
  • the blowing pressure of the primary tuyere 104 is 0.12 MPa to 0.3 MPa, and the pressure can increase the stirring intensity of the middle melt of the furnace body 100 in the width direction W and increase the blast of oxygen-enriched air. Pressure can overcome the resistance of the melt and increase the penetration depth of the blast.
  • there may be multiple primary air outlets 104 and the interval between adjacent primary air outlets 104 may be 500mm-600mm, such as but not limited to 550mm or 600mm.
  • a diameter of the air outlet of the primary air outlet 104 may be 38 mm-54 mm, such as but not limited to 45 mm or 50 mm, or 52 mm.
  • the number of the primary air outlets 104 may be 48-80, such as but not limited to 50, 55, 60, 65, 70, 75, and may be based on actual conditions. Need to choose.
  • the copper smelting device provided by the present disclosure can be a side-blown furnace, capable of processing 1 to 2 million t / a of concentrate in a single furnace body, and a copper production scale of 200,000 to 500,000 t / a.
  • the length direction L is the direction defined by the double arrow in FIG. 1
  • the height direction H is the direction of the double arrow in FIG. 2
  • the width direction W defined in the present disclosure is the direction of the double arrow in FIG. 3.
  • Direction It can be understood that when the picture in the illustration is rotated, the defined width direction W and height direction H are also rotated by corresponding angles.
  • the projection of the furnace body 100 in the width direction W may be that the upper gas layer structure width is greater than the lower slag layer structure width.
  • the dimension of the width direction W of the gas layer 114 may be 4.1m-7m.
  • the outer shell of the furnace body 100 may be a steel structure, and the inner lining may be formed of a refractory material.
  • the top of the furnace body 100 may be provided with a feeding opening 101 and a smoke outlet 106.
  • the feeding opening 101 can be set on the center line of the furnace body 100, but is not limited thereto, and can also be arranged near the two side walls according to actual needs.
  • a primary air outlet 104 and a secondary air outlet 105 may be provided on a side wall of the furnace body 100, wherein the primary air outlet 104 is on both sides of the furnace body 100, and the primary air outlet 104 may be provided on a slag layer 113.
  • the secondary air outlet 105 may be disposed on the top wall and the side wall of the furnace body 100, and the secondary air outlet 105 may correspond to the gas layer 114.
  • a cooling element may be provided on the side wall of the furnace body 100, the partition wall 107, and the end wall of the settlement area 111.
  • a copper water jacket 115 may be provided on the side wall.
  • the copper water jacket 115 may be provided with a cooling medium therein, such as but not limited to, the cooling medium may be water.
  • a copper nozzle 103 may be provided at one end of the furnace body 100, and a slag outlet 102 and a burner port 109 may be provided at the other end of the furnace body 100.
  • the burner port 109 may be disposed above the slag outlet 102.
  • the dimension H of the inner cavity height of the furnace body 100 may be 6 m to 8 m.
  • the length of the melting zone may be 12m-20m.
  • the copper smelting device further includes a secondary air outlet 105 disposed on a side wall corresponding to the gas layer 114.
  • the copper smelting device further includes a smoke outlet 106 provided on the top wall of the furnace body 100.
  • the internal cavity of the copper smelting device may be provided with a partition wall 107 along the width direction W.
  • the partition wall 107 divides the internal cavity into a melting area 110 and a settlement area 111, and the partition wall 107 and the furnace body 100. There are spaces between the top walls.
  • the smelting zone 110 and the settling zone 111 are arranged horizontally. With continuous feeding and smelting, the smelting slag generated after smelting can directly flow into the settling zone 111, and the copper slag and slag are separated in the settling zone 111.
  • the sedimentation region 111 is provided with a heating electrode for keeping or heating the sedimentation region 111.
  • the heating electrode may be a graphite electrode 108, but not the same. For the limit, you can choose according to your needs.
  • the settling area 111 may further be provided with a burner, and the burner may be provided in the burner port 109.
  • the copper concentrate After the copper concentrate is mixed with the flux, coal and other returned materials, it can be conveyed to the furnace top of the furnace body 100 through a belt, added to the furnace body 100 through the charging port 101, and 70% to 95% of the rich air is blown through the primary air port 104.
  • 111 is discharged from the slag outlet 102 after being separated from the copper matte. Air is blown into the secondary tuyere 105 for burning the monomer sulfur and carbon monoxide in the flue gas.
  • the flue gas is discharged from the upper gas outlet 106, enters the ascending flue, and the waste heat boiler is sent to the acid production after cooling and dust removal.
  • the melting temperature in the furnace body 100 can be 1200 ° C to 1300 ° C
  • the depth of the molten pool can be 2000mm to 2800mm
  • the grade of copper grate is 55% to 78%
  • the slag contains Cu 0.6% to 2.5%
  • the bed energy rate in the melting zone is concentrate
  • the amount is 60 ⁇ 90t / m2.d.
  • the oxygen-material ratio is related to the copper ⁇ grade
  • the slag containing Cu is also related to the copper ⁇ grade.
  • the furnace hearth of the smelting zone can be estimated.
  • the area is based on the length of the slag layer 113 in the melting zone of the furnace.
  • the width of the slag layer 113 in the melting zone is calculated.
  • the width of the slag layer 113 in the melting zone is 2.5m-4.5m.
  • blower volume can be achieved by increasing the number of tuyeres, increasing the diameter of the tuyere and increasing the pressure of oxygen-enriched air.
  • the melting strength is 80t / m 2 .d.
  • the furnace area of the slag layer 113 in the melting zone is 38m 2 .
  • the size is 15m
  • the width of the furnace body of the slag layer 113 is 2.5m
  • the primary air outlet 104 pressure is 0.12MPa-0.15MPa
  • the primary air outlet 104 spacing is 600mm
  • the primary air outlet 104 number is 48
  • the primary air outlet 104 diameter is 40mm
  • the feeding opening The number of 101 is 3, the blast oxygen concentration is 85%
  • the melt temperature is 1220 °C ⁇ 1280 °C
  • the depth of the molten pool is 2500mm
  • the height of the furnace bottom to the furnace top is 7000mm
  • the gas layer structure in the furnace body 100 is along the width direction
  • the size of W is 4100mm.
  • the smelting strength is 75t / m 2 .d
  • the furnace area of the slag layer 113 in the melting zone is 48m 2
  • the size of the slag layer 113 in the melting zone is 16m along the length direction L.
  • the width of the furnace body of the slag layer 113 is 3.0m
  • the pressure of the primary air outlet 104 is 0.15MPa-0.20MPa
  • the spacing of the primary air outlet 104 is 600mm
  • the number of the primary air outlet 104 is 52
  • the diameter of the primary air outlet 104 is 45mm
  • the feeding opening 101 The number is 3, the blast oxygen-rich concentration is 85%
  • the melt temperature is 1220 °C -1280 °C
  • the melt pool depth is 2500mm
  • the furnace height from the furnace bottom to the furnace top is 7200mm
  • the gas layer structure in the furnace body 100 is along the width direction W
  • the dimensions are 4800mm.
  • the smelting furnace area of the slag layer 113 is 63m 2
  • L dimension along the longitudinal direction of the melting of the slag layer 113 is 18m
  • the slag layer The furnace body width of 113 is 3.5m
  • the primary air outlet 104 pressure is 0.15MPa-0.25MPa
  • the primary air outlet 104 spacing is 600mm
  • the number of primary air outlets 104 is 60
  • the primary air outlet 104 diameter is 48mm
  • the number of feed openings 101 is 4
  • the blast air oxygen-rich concentration is 80% -85%
  • the melt temperature is 1220 °C -1280 °C
  • the melt pool depth is 2500mm
  • the furnace height from the furnace bottom to the furnace top is 7500mm
  • the gas layer structure in the furnace body 100 is 5600mm in the width direction. .
  • the melting strength is 72t / m 2 .d
  • the furnace area of the slag layer 113 in the melting zone is 76m 2
  • the size of the slag layer 113 in the melting zone along the length direction L is 19m.
  • the slag layer The furnace body width of 113 is 4.0m, the pressure of the primary air outlet 104 is 0.18MPa-0.30MPa, the spacing of the primary air outlet 104 is 600mm, the number of primary air outlets 104 is 62, the diameter of the primary air outlet 104 is 50mm, and the number of feeding openings There are five blast air oxygen-rich concentrations of 80% to 85%, melt temperature of 1220 ° C to 1280 ° C, melt pool depth of 2500mm, furnace height from the bottom to the top of the furnace, 7800mm, and the gas layer structure in the furnace body 100 along the width direction W The dimensions are 6400mm.
  • the melting strength is 67t / m 2 .d
  • the furnace area of the slag layer 113 in the melting zone is 90m 2
  • the size of the slag layer 113 in the melting zone along the length direction L is 20m.
  • the furnace body width of 113 is 4.5m
  • the pressure of the primary air outlet 104 is 0.18MPa-0.30MPa
  • the spacing of the primary air outlet 104 is 600mm
  • the number of primary air outlets 104 is 66
  • the diameter of the primary air outlet 104 is 54mm
  • the number of the feeding openings 101 There are six blast air oxygen-rich concentrations of 80% to 85%, melt temperature of 1220 ° C to 1280 ° C, melt pool depth of 2500mm, furnace height from furnace bottom to furnace top of 8000mm, and the gas layer structure in the furnace body 100 along the width direction W
  • the dimensions are 7000mm.
  • the side-blow furnace of the present disclosure adopts a wide furnace body and a blast furnace structure, which can reduce the length of the furnace body, reduce the number of furnace body feeding openings, expand the vertical sectional area of the furnace, reduce the flue gas flow rate, reduce the dust rate, and the smoke outlet.
  • the size is more reasonable.
  • the amount of copper concentrate processed by a single side blowing furnace of the present disclosure is equal to the processing amount of two side blowing furnaces in the related art.
  • the single side-blowing furnace occupies less floor space, less corresponding equipment, saves investment, saves manpower, and improves labor productivity. In comparison, economic benefits will be better.
  • one large side-blown smelting furnace system is used than the two small side-blown smelting furnace systems.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un dispositif de fusion de cuivre, comprenant un corps de four (100), un orifice d'alimentation (101), une sortie de fumée (106), une sortie de laitier (102), un orifice de matte de cuivre (103), et un évent d'air primaire (104). Une couche de matte de cuivre (112), une couche de laitier (113) et une couche de gaz (114) sont agencées successivement dans le corps de four (100) de bas en haut. L'orifice d'alimentation (101) est agencé sur une paroi supérieure du corps de four (100). La sortie de fumée (106) est agencée sur la paroi supérieure du corps de four (100). La sortie de laitier (102) est agencée à une extrémité du corps de four (100). L'orifice de matte de cuivre (103) est agencé à une extrémité du corps de four (100) à l'opposé de la sortie de laitier (102), et l'orifice de matte de cuivre (103) est situé au fond de la couche de matte de cuivre (112). L'évent d'air primaire (104) est situé sur une paroi latérale du corps de four correspondant à la couche de laitier (113), et est utilisé pour souffler de l'air enrichi en oxygène dans la couche de laitier (113). Les dimensions dans le sens de la largeur de la paroi interne correspondant à la couche de laitier (113) sont supérieures à 2,5 m et inférieures ou égales à 4,5 m de façon à augmenter l'échelle d'un traitement de four unique de concentrés, ce qui permet d'améliorer l'efficacité du travail et de réduire les coûts de fonctionnement.
PCT/CN2019/098643 2018-09-21 2019-07-31 Dispositif de fusion de cuivre WO2020057266A1 (fr)

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CN201811109807.3A CN108913914B (zh) 2018-09-21 2018-09-21 铜熔炼装置
CN201811109807.3 2018-09-21

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN112695209A (zh) * 2020-12-30 2021-04-23 黑龙江紫金铜业有限公司 一种铜的强化熔池熔炼炉及熔炼方法

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CN108913914B (zh) * 2018-09-21 2024-03-12 中国恩菲工程技术有限公司 铜熔炼装置
CN112746184B (zh) * 2021-04-06 2021-07-06 中国恩菲工程技术有限公司 铜冶炼炉、铜冶炼设备和铜冶炼方法
CN113720148A (zh) * 2021-11-03 2021-11-30 中国恩菲工程技术有限公司 侧吹炉
CN113897468A (zh) * 2021-11-09 2022-01-07 上海西勘环境科技有限公司 一种从金属废料中强化还原回收铁的富氧侧吹炉
CN114959295A (zh) * 2022-01-07 2022-08-30 昆明理工大学 一种铜渣炉内还原贫化的方法

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CN112695209A (zh) * 2020-12-30 2021-04-23 黑龙江紫金铜业有限公司 一种铜的强化熔池熔炼炉及熔炼方法
CN112695209B (zh) * 2020-12-30 2023-04-14 黑龙江紫金铜业有限公司 一种铜的强化富氧侧吹熔池熔炼炉及熔炼方法

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CN108913914B (zh) 2024-03-12
CL2021000633A1 (es) 2021-09-10
CN108913914A (zh) 2018-11-30

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