CN203890418U - One-step copper smelting device - Google Patents
One-step copper smelting device Download PDFInfo
- Publication number
- CN203890418U CN203890418U CN201420189825.8U CN201420189825U CN203890418U CN 203890418 U CN203890418 U CN 203890418U CN 201420189825 U CN201420189825 U CN 201420189825U CN 203890418 U CN203890418 U CN 203890418U
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- China
- Prior art keywords
- copper
- smelting
- spray gun
- vertical line
- heater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000003723 Smelting Methods 0.000 title claims abstract description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 39
- 239000010949 copper Substances 0.000 title claims abstract description 39
- 239000007921 spray Substances 0.000 claims abstract description 26
- 238000007664 blowing Methods 0.000 claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003345 natural gas Substances 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 claims description 7
- 241000628997 Flos Species 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 235000009508 confectionery Nutrition 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 26
- 230000008569 process Effects 0.000 abstract description 18
- 238000007670 refining Methods 0.000 abstract description 7
- 239000012141 concentrate Substances 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 12
- 230000008018 melting Effects 0.000 description 12
- 241000722270 Regulus Species 0.000 description 8
- 239000010970 precious metal Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000009867 copper metallurgy Methods 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000010894 Artemisia argyi Nutrition 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 244000030166 artemisia Species 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model relates to a one-step copper smelting device. The inside of a furnace body is relatively divided into three areas, i.e., a smelting area, a blowing area and a refining area, by baffle walls; two rows of spray guns which are arranged in a staggering manner and form included angles with vertical lines are respectively amounted at the bottom of the inside of the furnace body. After copper concentrates are mixed with recycled dust, the mixed copper concentrates and a fluxing agent are added into the furnace body from a feeding inlet in the smelting area and are autogenously smelted by spraying oxygen-enriched air into the furnace body through the spray guns, so that copper matte is generated; the copper matte is smelted into crude copper and slag in a blowing manner by spraying the oxygen-enriched air into the furnace body through the spray guns in the blowing area; the crude copper is oxidized by feeding the oxygen-enriched air through the spray guns in the refining area and reduced by feeding natural gas taken as a reducing agent, and the generated anode copper with relatively high purity is intermittently discharged from a copper discharging outlet. Thus, the problem of low-altitude pollution caused by SO2 is solved, so that an operating environment is greatly improved; the utilization rate of sulfur and heat energy is obviously increased, so that the economic benefit is further increased. Meanwhile, compared with an existing continuous copper smelting process, the one-step copper smelting device provided by the utility model is advanced, shorter in process, less in investment, lower in cost and comprehensive energy consumption, higher in recovery rate and better in comprehensive utilization.
Description
Technical field
The utility model belongs to nonferrous metallurgy field, relates to a kind of device that can process a step copper metallurgy of multi-metal complex ore deposit and precious metal associated minerals.
Background technology
At present, the pyrometallurgical smelting of copper is with regard to melting technology, for industrial existing: Flash Smelting Furnace melting, Rouyn-Noranda melting, Ausmelt technology, the melting of Chinese mugwort Sa, the melting of silver method, bottom-blown smelting and traditional blast furnace smelting, electrosmelting, reverberatory smelting etc.Above-mentioned melting method except rear three kinds of traditional method environmental protection be difficult to up to standard, the comparatively advanced melting technology that other Dou Shi world todays adopt.With regard to the blowing of copper, the world today is upper more than 90% is all to adopt PS converter.With regard to the refining of copper, great majority adopt rotary kiln refining, reverberatory refining and tilting furnace refining.These smelting processes are all separately to carry out in different stoves, and the utilization ratio of sulphur is low, and thermosteresis is many.Particularly the copper matte regulus of blowing, melting output need wrap in workshop and have bad luck with copper matte regulus, causes SO
2the loss of flue gas low latitude, adds the reinforced and converting process of converter, and flue gas is difficult to seal completely, also has loss phenomenon in various degree, makes PS bessemerize the operating environment of operation very poor.
Have now two kinds for industrial continuous converting technique, a kind of is the Mitsubishi process of Japan's research and development, adopts the melting of top blast stove, electric furnace sedimentation copper matte regulus, and slag is carried out to dilution, more continuously copper matte regulus is blown to blister copper with top blast stove.Three stoves connect with two chutes, have realized continual copper smelting.Another kind is the copper metallurgy technique of Utah,U.S.A Kennecott smeltery, adopts that Flash Smelting Furnace melting, slag ore dressing, copper matte regulus water are broken, dry, ore grinding blows into blister copper with Flash Smelting Furnace again.Above-mentioned two kinds of continual copper smelting techniques, although solved the environmental issue of blowing operation, also have weak point, require further improvement raising.
Utility model content
The purpose of this utility model is for the defect of existing smelting process and deficiency, and a kind of step copper smelting device that can simultaneously complete melting, blowing and three processes of refining in a stove is provided.
The technical solution of the utility model is: a step copper smelting device, its device comprises body of heater, charging opening, floss hole, burner, slag notch, puts copper mouth, spray gun, flux mouth, by smelting zone, blowing district, fining cell three parts, is formed in body of heater, between by barricade, separated; Body of heater is rotatable horizontal cylindrical furnace, and shell is steel plate, inner lining refractory, and body of heater is by two idler stands on basis, and one of them carrying roller one end is furnished with motor, geartransmission, body of heater can be arranged to rotate along axle center; The bottom in each district is separately installed with two rows and is staggeredly arranged, keeps at a certain distance away, intersects in opposite directions at an angle to the spray gun of furnace injection oxygen-rich air or Sweet natural gas; Charging opening is located at top, smelting zone, and floss hole and flux mouth are located at top, blowing district, and main burner, auxiliary burner are located at respectively on the headwall near smelting zone and fining cell both sides; Slag notch and put copper mouth all on the headwall of auxiliary burner one side.
The spray gun of described smelting zone becomes 0 °-22 ° with vertical line, the spray gun in blowing district becomes 30 °-45 ° ,-70 ° at 45 ° of spray gun and the vertical line of fining cell with vertical line.
Described smelting zone, blowing district, fining cell length are respectively: 15m, 8m, 8m, and stove internal diameter is 4.8m; The bottom of smelting zone installs respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 3-27 at 17 ° of-22 ° of angles to prop up spray gun with vertical line; The bottom in blowing district installs respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 2-21 at 35-40 ° of angle to prop up spray gun with vertical line; In the bottom of fining cell, install respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 1-17 at 45-50 ° of angle to prop up spray gun with vertical line.
The utility model compared to the prior art, its positively effect reaching mainly contain following some: (1) the utility model has been realized pyritic smelting completely.This technology is carried out the three phases of smelting process in same stove, has saved copper matte regulus and blister copper the having bad luck of workshop, and calorific loss greatly reduces; Bottom convertor is one to seal tight container, and air leak rate of air curtain is low, and oxygen-rich concentration is high simultaneously, has reached 75% left and right, can greatly improve the intensity of melting and reduce exhaust gas volumn, and the less calories that gas is taken away, thus reduce thermosteresis; Bottom convertor is simple in structure, furnace water jacket is few and columnar structuredly can reduce heat leakage.Therefore this bottom convertor can not add any fuel, realizes pyritic smelting completely.
(2) the utility model is wide to adaptability to raw material scope, can not only extract concentrate such as copper, gold and silver, and can process to low-grade, unmanageable polymetallic ore and containing the high precious metal associated minerals of gold and silver, realizes the comprehensive utilization of resource.
(3) combustion intensity is large, and oxygen utilization rate is high, processes mineral aggregate ability strong.Oxygen enters stove by oxygen rifle from base injcction, and it is fast to inject speed, can effectively guarantee in stove fully vigorous reaction, reaction zone mixes, irrotational flow, without dead angle, can form good heat transfer and mass transfer condition, the utilization ratio of oxygen reaches 100%.
(4) the utility model is difficult for producing foamy slag, operational safety, and energy consumption is low, and slag cupric is low.Because the utility model is that bottom blowing is smelted, oxygen directly acts on copper matte regulus, blister copper and anode copper, so the oxygen gesture of slag making reaction is lower, is difficult for generating Fe
3o
4, so slag can adopt high iron silicon ratio slag type (the Mitsubishi process slag Fe/SiO of prior art
21.1-1.3, Flash Smelting Furnace slag are 1.48-1.65, and the utility model is 1.6-2.2), thus the quartzy flux amount adding is less, slag rate is low, and the inventory of slag ore dressing reduces, and energy consumption is corresponding decline also.In slag, contain Fe simultaneously
3o
4few, the viscosity of slag is lower, can reduce the content of copper in slag.
(5) the utility model copper metallurgy cost is low, is conducive to relieving haperacidity.The periodic job that the utility model is not bessemerized, furnace temperature is stable, and converter life is long, has reduced consumption and the maintenance load of refractory materials, thereby reduces copper metallurgy cost.Meanwhile, body of heater need not often rotate, exhaust gas volumn and smoke components (SO
2content) stable, be conducive to relieving haperacidity, reduce relieving haperacidity cost.
(6) the utility model is strong to precious metal trapping ability, and many metals comprehensive recovery is high.Very strong to the dissolving power of precious metal at smelting zone sulfonium, under the high speed oxygen gas mixing of bottom convertor bottom is moving, sulfonium constantly rinses concentrate and slag repeatedly, precious metal is had to a repeatedly process for trapping, thereby make precious metal more be dissolved in sulphur, complete and make sulfonium and catch golden process, compare with other techniques and there is the higher precious metal rate of recovery.Simultaneously, when this technique oxygen sprays into smelting zone from furnace bottom, sulfonium temperature is higher, oxygen gesture is higher, be conducive to lead in concentrate, mercury, arsenic, antimony, bismuth etc. obtains fully and is enriched in flue dust after volatilization in bottom-blown smelting process, again through wet processing, the valuable element in can efficient recovery multi-metal complex ore deposit, expands utilization of resources scope.
(7) good operational environment, economic benefit is high, and labour intensity is low.Three smelting processes of this utility model are carried out in same stove, have saved to disclose the eye of wind operation when copper matte regulus bag, blister copper wrap in having bad luck of workshop and blow, and have saved a large amount of human and material resources, have improved economic benefit, and labour intensity reduces greatly.Avoided SO simultaneously
2the low latitude loss of flue gas, operating environment is good.
(8) reduced investment.Three processes of smelting realize in same stove, and simple in structure, technical process is shortened greatly, and auxiliary facility is few.Simultaneously furnace charge preparation is simple, does not need the preprocessor such as depth drying, pulverizing, granulation, easy operation.Bottom blowing does not need very high factory building and expensive import equipment and technology transfer fee, so construction investment is low.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1, describe the embodiment of the utility model apparatus structure in detail.
One step copper smelting device, its device comprises body of heater 1, charging opening 2, floss hole 3, burner 4 and 5, slag notch 6, puts copper mouth 7, spray gun 9, flux mouth 10, in body of heater 1, by smelting zone, blowing district, fining cell three parts, is formed, between by barricade 8, separated; Body of heater 1 is rotatable horizontal cylindrical furnace, and shell is steel plate, inner lining refractory, and body of heater 1 is by two idler stands on basis, and one of them carrying roller one end is furnished with motor, geartransmission, body of heater 1 can be arranged to rotate along axle center; The bottom in each district is separately installed with two rows and is staggeredly arranged, keeps at a certain distance away, intersects in opposite directions at an angle to the spray gun 9 of furnace injection oxygen-rich air or Sweet natural gas; Charging opening 2 is located at top, smelting zone, and floss hole 3 and flux mouth 10 are located at top, blowing district, and main burner 5, auxiliary burner 4 are located at respectively on the headwall near smelting zone and fining cell both sides; Slag notch 6 and put copper mouth 7 all on the headwall of auxiliary burner 4 one sides.
Described smelting zone, blowing district, fining cell length are respectively: 15m, 8m, 8m, and stove internal diameter is 4.8m; The bottom of smelting zone installs respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 3-27 at 17 ° of-22 ° of angles to prop up spray gun with vertical line; The bottom in blowing district installs respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 2-21 at 35-40 ° of angle to prop up spray gun with vertical line; In the bottom of fining cell, install respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 1-17 at 45-50 ° of angle to prop up spray gun with vertical line.
Claims (3)
1. a step copper smelting device, its device comprises body of heater, charging opening, floss hole, burner, slag notch, puts copper mouth, spray gun, flux mouth, it is characterized in that by smelting zone, blowing district, fining cell three parts, being formed in body of heater, between by barricade, relatively separated, melt canal is left in partition wall lower end; Body of heater is rotatable horizontal cylindrical furnace, and shell is steel plate, inner lining refractory, and body of heater is by two idler stands on basis, and one of them carrying roller one end is furnished with motor, geartransmission, body of heater can be arranged to rotate along axle center; The bottom in each district is separately installed with two rows and is staggeredly arranged, keeps at a certain distance away, intersects in opposite directions at an angle to the spray gun of the gases such as furnace injection oxygen-rich air or Sweet natural gas; Charging opening is located at top, smelting zone, and floss hole and flux mouth are located at top, blowing district, and main burner, auxiliary burner are located at respectively on the headwall near smelting zone and fining cell both sides; Slag notch and put copper mouth all on the headwall of auxiliary burner one side.
2. a step copper smelting device according to claim 1, is characterized in that the spray gun of smelting zone becomes 0 °-22 ° with vertical line, and the spray gun in blowing district becomes 30 °-45 ° ,-70 ° at 45 ° of spray gun and the vertical line of fining cell with vertical line.
3. a step copper smelting device according to claim 1, is characterized in that smelting zone, blowing district, fining cell length are respectively: 15m, 8m, 8m, and stove internal diameter is 4.8m; The bottom of smelting zone installs respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 3-27 at 17 ° of-22 ° of angles to prop up spray gun with vertical line; The bottom in blowing district installs respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 2-21 at 35-40 ° of angle to prop up spray gun with vertical line; In the bottom of fining cell, install respectively that two rows are staggeredly arranged, interval 0.5-1.5m, become the 1-17 at 45-50 ° of angle to prop up spray gun with vertical line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420189825.8U CN203890418U (en) | 2014-04-18 | 2014-04-18 | One-step copper smelting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420189825.8U CN203890418U (en) | 2014-04-18 | 2014-04-18 | One-step copper smelting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203890418U true CN203890418U (en) | 2014-10-22 |
Family
ID=51716845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420189825.8U Expired - Lifetime CN203890418U (en) | 2014-04-18 | 2014-04-18 | One-step copper smelting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203890418U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952571A (en) * | 2014-04-18 | 2014-07-30 | 东营鲁方金属材料有限公司 | One-step copper smelting technology and device thereof |
| CN104988332A (en) * | 2015-07-06 | 2015-10-21 | 中南大学 | One-step copper smelting process and device |
| CN105907987A (en) * | 2016-04-26 | 2016-08-31 | 中国瑞林工程技术有限公司 | Smelting furnace and copper matte preparation method using same |
| CN110885933A (en) * | 2019-11-15 | 2020-03-17 | 北京科技大学 | Method for strengthening smelting effect of bottom-blowing smelting furnace and improving melt splashing |
-
2014
- 2014-04-18 CN CN201420189825.8U patent/CN203890418U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952571A (en) * | 2014-04-18 | 2014-07-30 | 东营鲁方金属材料有限公司 | One-step copper smelting technology and device thereof |
| CN103952571B (en) * | 2014-04-18 | 2015-08-12 | 东营鲁方金属材料有限公司 | One step copper metallurgy technique and device thereof |
| CN104988332A (en) * | 2015-07-06 | 2015-10-21 | 中南大学 | One-step copper smelting process and device |
| CN104988332B (en) * | 2015-07-06 | 2017-04-12 | 中南大学 | One-step copper smelting process and device |
| CN105907987A (en) * | 2016-04-26 | 2016-08-31 | 中国瑞林工程技术有限公司 | Smelting furnace and copper matte preparation method using same |
| CN110885933A (en) * | 2019-11-15 | 2020-03-17 | 北京科技大学 | Method for strengthening smelting effect of bottom-blowing smelting furnace and improving melt splashing |
| CN110885933B (en) * | 2019-11-15 | 2021-07-16 | 北京科技大学 | Method for strengthening smelting effect of bottom-blowing smelting furnace and improving melt splashing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |
|
| CX01 | Expiry of patent term |