CN1540008A - Method for using solid reductant in rotary type anode furnace - Google Patents
Method for using solid reductant in rotary type anode furnace Download PDFInfo
- Publication number
- CN1540008A CN1540008A CNA2003101108509A CN200310110850A CN1540008A CN 1540008 A CN1540008 A CN 1540008A CN A2003101108509 A CNA2003101108509 A CN A2003101108509A CN 200310110850 A CN200310110850 A CN 200310110850A CN 1540008 A CN1540008 A CN 1540008A
- Authority
- CN
- China
- Prior art keywords
- spray gun
- anode furnace
- carrier
- blows
- reductive agent
- 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.)
- Granted
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007787 solid Substances 0.000 title claims description 33
- 239000007921 spray Substances 0.000 claims description 41
- 239000003795 chemical substances by application Substances 0.000 claims description 31
- 230000002829 reductive effect Effects 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 8
- 238000003912 environmental pollution Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 30
- 239000010949 copper Substances 0.000 description 24
- 229910052802 copper Inorganic materials 0.000 description 23
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 238000007670 refining Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 239000000295 fuel oil Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000011946 reduction process Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 230000035611 feeding Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009853 pyrometallurgy Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 241000722270 Regulus Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- -1 timber Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
A process for using the powdered C-base reducer in rotary or tilting anodic furnace is disclosed. Its advantages are the very low environmental pollution.
Description
Technical field: the invention belongs to black and non-ferrous metal metallurgy category, especially a kind of when copper fire-refining Rotary Anode Furnace adopt solid reductant to carry out the method for reduction process.
Background technology: metallic copper is human uses the earliest and so far still at one of a large amount of metals that use.The extracting method of copper is divided into copper smelting by pyrometallurgy and wet type copper smelting two big classes.Wherein, the copper that copper smelting by pyrometallurgy obtained accounts for 80% of world's overall supplies.Pyrometallurgical is smelted general through following several procedures: the roasting of flotation concentrates or sintering; The matte smelting of copper ore concentrates or roasted ore; Copper matte regulus blows into blister copper; The blister copper pyrorefining becomes anode copper; The anode copper electrorefining becomes electrolytic copper.
Copper fire-refining is the important procedure of copper production process, its objective is the sulphur and the oxygen that further remove in the blister copper, and partial impurities, and is cast into the anode copper that meets the electrorefining requirement; Cardinal principle is by blasting air or oxygen in melt, and oxidation refining removes wherein sulphur and partial impurities, feeds reductive agent afterwards again and remove oxygen in the copper liquid with reduction in melt.That copper fire-refining generally is divided into is reinforced, fusing, insulation, oxidation, skim, reduction and casting cycle.Refining unit mainly contains fixed reverberatory furnace, rotary type refining anode furnace and three kinds of type of furnaces of tilting-type anode furnace.
The reductive agent that the copper fire-refining anode furnace adopts has various ways such as gas, liquid and solid, as Sweet natural gas, liquefied petroleum gas (LPG), coal gas, ammonia, heavy oil, solar oil, timber, wood charcoal powder, fine coal etc.Gaseous reducing agent (as ammonia) reduction effect is good, reduction process is controlled easily, environmental pollution is little, but resource few, cost an arm and a leg; Liquid reducer (as heavy oil) reduction effect is better, and process is easy to control, but price height, environmental pollution are serious.
When present Rotary Anode Furnace is used the heavy oil reduction, there are a large amount of black smokes to overflow, cause serious low vacancy pollution at fire door and flue interface section; In addition, heavy oil need be handled through heating and atomizing, the support equipment complexity, and one-time investment is higher.China's heavy oil resource is poor relatively, and price is expensive, and price is subjected to market clout bigger.
Powdery solid C base reductant source is abundant, and cheap, environmental pollution is little, and development prospect is wide, but reduction process is wayward.
Solid carbon base reductant by Ligong Jingcheng Science ﹠ Technology Co., Ltd., Kunming develops successfully applies to the fixed reverberatory furnace reducing process of copper refining at present.
But use in the more rotary type or tilting-type anode furnace in the copper refining technology, do not adopt powdery solid C base reductant technology as yet.Following table is the reductive agent type that at present domestic and international Rotary Anode Furnace is adopted.
| Factory is other | Rotary refining furnace | ||||
| Capacity, t | The platform number | Reductive agent | Recovery time (minute) | Reductive agent unit consumption (kg/t-Cu) | |
| Little Ban Chang | ???70 | ???1 | Ammonia | ????60 | ????8 |
| ONAHAMA factory | ???250 | ???2 | ???H 2 | ????126 | ????11.5 |
| Beautiful wild factory | ???100 | ???2 | Lam-oil | ????180 | ????4.8 |
| The Saga shutout | ???250 | ???4 | Ammonia | ????66 | ????7 |
| Factory of Hitachi | ???190 | ???3 | A level oil | ????192 | ????8.2 |
| Factory is given in east | ???350 | ???2 | Ammonia | ????150 | ????8 |
| Day is compared factory | ???40 | ???2 | Propane | ????60 | ????5.2 |
| Straight island | ???90 | Ammonia | ????110 | ????6.8 | |
| Heiden | ???250 | ???2 | Insert wood | ????- | ????- |
| Harry Ya Waerta | ???250 | ???2 | Liquefied gas | ????90 | ????4～6 |
| Your smelting | ???240 | ???2 | Liquefied gas | ????90 | ????4～6 |
| Daye | ???100 | ???1 | Heavy oil | ????45 | ????5～6 |
Rotary type or tilting-type anode furnace use powdery solid C base reductant to have following technical barrier:
1, because the feeding tube of rotatable tilting-type anode furnace and be applicable to gas or the redox spray gun of liquid reducer below copper liquid, in case blowed band water band wet goods factor affecting in the unstable blast, wind of carrier (pressurized air or rare gas element), be easy to generate the smooth and raw material plugging of feeding etc., to cause copper liquid to pour in down a chimney, even spray gun and pipeline blocked, thereby when using powdery solid C base reductant, stop up easily.
2, be applicable to the storage and the carrying method of gas or liquid reducer, can not realize the conveying of powdery solid C base reductant.
When 3, adopting powdery solid C base reductant, transfer line is arranged and the processing parameter of delivery vehicles is controlled no proven technique.Reduction process control is improper, might cause reduction effect not good, and the reductive agent utilization ratio is low, causes low vacancy pollution.
Summary of the invention: at the deficiency of above-mentioned prior art existence, the present invention proposes the method that a kind of Rotary Anode Furnace is used solid reductant, it is by being applied to Rotary Anode Furnace with powdery solid C base reductant, can obviously reduce environmental pollution, the solid reductant feed is smooth and easy, and simple and safe operation consumes low.Restoring operation of tilting-type anode furnace and Rotary Anode Furnace are similar, and the present invention also is equally applicable to the tilting-type anode furnace.
It is to use the powdery solid carbon based reductive on rotary type or tilting-type anode furnace that the present invention uses the method for solid reductant, with granularity at the reductive agent of 0.1～5mm by blowing carrier through transport pipe, spray into and carry out restore job in the anode furnace, the reductive agent carrier blows pressure-controlling at 0.2～0.6MPa, the angle α that blows carrier mixture inlet tube and the spray gun person in charge is 0～90 °, and the caliber that blows carrier inlet pipe and spray gun pipeline is 19～50.8mm.
When described reductive agent sprayed in the anode furnace, carrier blowed pressure-controlling at 0.35MPa, and the angle α that blows carrier mixture inlet tube and the spray gun person in charge is 30 °, and the caliber that blows carrier inlet pipe and spray gun pipeline is 25.4mm. The angle that blows carrier mixture inlet tube and the spray gun person in charge is the right angle, and the auxilliary airduct and the person in charge's angle is zero; The angle that perhaps blows carrier mixture inlet tube and auxilliary airduct and the spray gun person in charge is zero.
Described powdery solid C base reductant is stored handling machinery by reductive agent, by blowing carrier through transport pipe and spray gun, sprays into and carries out restore job in the anode furnace, is applicable to that rotary type or tilting-type anode furnace use solid reductant to carry out restore job.
Described blowing can be adopted single air port or two tuyere injection mode of connection between reductive agent system and the body of heater, single tuyere injection mode is promptly established cover storage handling machinery feed in stove separately and carried out restoring operation in each air port; During two tuyere injection mode, configurable two cover reductive agents are stored handling machinerys, and an air port is to a cover handling machinery, or dispose a cover reductive agent and store handling machinery, and its outlet is divided into two, and blow powdery solid C base reductant to two air ports respectively.
Description of drawings
Fig. 1 is the structural representation of existing Rotary Anode Furnace.Fig. 2 is the side direction cut-away view of Fig. 1.
Fig. 3 is the redox spray gun right angle connection diagram on the existing Rotary Anode Furnace.
Fig. 4 is according to the improved first kind of redox spray gun annexation synoptic diagram of the present invention.
Fig. 5 is according to the improved second kind of redox spray gun annexation synoptic diagram of the present invention.
Fig. 6 is according to improved the third redox spray gun annexation synoptic diagram of the present invention.
Fig. 7 is an injection system configuration schematic diagram provided by the invention.
Rotary Anode Furnace structure as shown in Figure 1 and Figure 2, it is made up of body of heater, riding wheel apparatus, drive unit, burner etc.Among the figure: the 1-smoke outlet; The 2-housing; The 3-brick masonary; The 4-bell; 5-redox mouth; The 6-burner; The 7-fire door; The 8-carrying roller; The 9-transmission mechanism; The 10-copper outlet.It is the pyrorefining equipment of later development the 1950's, has now developed into the standard type of furnace of copper fire-refining, is a columnar body of heater, disposes 2 air ports, a fire door and a copper outlet on body of heater, and body of heater can be done 360 ° of revolutions.Rotating furnace is imbedded the air port under the liquid level, carries out oxidation, restore job.
As shown in Figure 3, on the Rotary Anode Furnace of using liquid or gaseous reducing agent, the auxilliary airduct 3 on the redox spray gun is connected for the right angle with reductive agent blower pipe 2 at present.When using powdery solid C base reductant, if continue to use this structure formation, cause spray gun and line clogging easily, need the feed rate of strict flow, pressure and the powdery solid C base reductant that control delivery vehicles well.The present invention has developed three kinds of solid redox spray guns that are applicable to rotary type or tilting-type anode furnace for this reason.
The present invention to the improvement of redox spray gun shown in Fig. 4～6,11-gun slot among the figure; The 12-reductive agent with blow the carrier mixture inlet tube; 13-assists airduct; The 14-plug; D-19～50.8mm; α-0～90 °.
Improve back first kind of spray gun and see Fig. 4, can reduce spray gun winding-up resistance, solve the latch up phenomenon that blows in the process fully, it is best structural shape, its angle α that blows carrier mixture inlet tube and the auxilliary airduct and the spray gun person in charge is 30 °, and caliber d is 25.4mm, is convenient to Flow of Goods and Materials; Improve back second kind of spray gun and see Fig. 5, the angle that blows carrier mixture inlet tube and the spray gun person in charge changes the right angle into, auxilliary airduct is zero with the person in charge's angle, and this pattern needs strictness to control auxilliary wind blast and blow carrier pressure well, otherwise it is smooth to cause powdery solid C base reductant to blow; Improve the third spray gun of back and see Fig. 6, blow the carrier mixture inlet tube and comprise auxilliary airduct, the angle of being responsible for spray gun is zero, and the connection of this kind pattern pipeline is simple, but the same obstruction of appearance easily needs often to change spray gun.More than three kinds of spray gun calibers should adopt 19～50.8mm, the concrete size of caliber should be determined according to furnace capacity size, recovery time and delivery vehicles parameter.
Injection method: the interface of reductive agent winding-up system and Rotary Anode Furnace adopts original air port, does not influence the existing equipment structure like this, only the redox spray gun need be inserted to get final product.When restoring operation, can select the operation of single air port or two air port mode of operation simultaneously.In order to shorten the restore job time, should adopt two air ports mode of operation simultaneously.
As Fig. 7, reductive agent winding-up equipment is formed by storing handling machinery, feed control valve, connection flexible pipe, redox spray gun, permanent joint etc., and delivery vehicles can adopt pressurized air or rare gas element.Among the figure: 15-stores handling machinery; The 16-reductive agent is supplied with control valve; 17-blows carrier inlet; The 18-permanent joint; 19-connects flexible pipe; 13-assists airduct; 11-redox gun slot; The 12-reductive agent with blow the carrier inlet pipe; 9-3.The mode of connection of injection system and body of heater can be divided into three kinds: one, will store the handling machinery purge port and be divided into two, respectively to 2 air port feedings, because each pipe is to the drag losses difference in air port, it is very inhomogeneous to enter the interior material amount of stove, an air port charging, the situation of a not charging of air port appear when serious.As long as processing parameter control suitably, this blows mode also can satisfy the reducing process requirement, but the control requirement is relatively stricter, and the recovery time is longer relatively; Two, set up a storage handling machinery, carry out restore job in an air port; Three, each air port is set up a storage handling machinery, feed in stove carries out the reducing process process respectively, and this blows mode is optimum distributing style.
Technological process control method and parameter: outside the Pass reductive agent feed smooth and easy removes and to have with the configuration of delivery system and structure, also relevant with the granularity of the pressure condition of delivery vehicles and reductive agent.Through repetition test, Rotary Anode Furnace powdery solid C base reductant carrier pressure need be controlled at 0.2～0.6MPa, and flow control is at 6～20Nm
3/ min, carrier need carry out oil removing, demist and dewater; The reductive agent granularity should be controlled at 0.1～5mm.
The control of reduction effect can be regulated: regulate the aperture of storing handling machinery feed control valve in the following way; Adjust rotary kiln redox spray gun and imbed the degree of depth of liquid level; Regulate the proportioning of delivery vehicles and reductive agent feed rate.
Pass through repeatedly repetition test according to method of the present invention, powdery solid C base reductant technology is successfully applied to Rotary Anode Furnace and tilting-type anode furnace, and technico-economical comparison is as follows:
The anode copper quality that restores meets the requirement of electrorefining operation; Powdery solid C base reductant ton copper unit consumption 8～10kg; Recovery time: furnace charge is when 80 tons of left and right sides, and the recovery time is 25 a minutes/stove; Furnace charge is when 100 tons of left and right sides, and the recovery time is 30 a minutes/stove.
Rotary type or the adoptable powdery solid C of tilting-type anode furnace base reductant have materials such as wood charcoal powder, coal.Wood charcoal powder is that timber processes through firing, and needs to consume a large amount of trees, disagrees with national forestry code and is contrary to, and its source is more and more rare.Rich coal resources in China, widely distributed, coal is as the reductive agent of copper fire-refining rotary type or tilting-type anode furnace, and the source is than being easier to, and is cheap.
Rotary type or tilting-type anode furnace powdery solid C base reductant use technology that the present invention proposes, it is simple, easy and simple to handle to have a processing unit, can obviously reduce environmental pollution, obtain lower advantages such as production run cost, better economic and social benefit are arranged, have broad prospect for its application.
Claims (6)
1, Rotary Anode Furnace is used the method for solid reductant, it is characterized in that: on rotary type or tilting-type anode furnace, use the powdery solid carbon based reductive, with granularity at the reductive agent of 0.1～5mm by blowing carrier through transport pipe, spray into and carry out restore job in the anode furnace, the reductive agent carrier blows pressure-controlling at 0.2～0.6MPa, the angle α that blows carrier mixture inlet tube and the spray gun person in charge is 0～90 °, and the caliber that blows carrier inlet pipe and spray gun pipeline is 19～50.8mm.
2, method according to claim 1, it is characterized in that: when reductive agent sprays in the anode furnace, carrier blows pressure-controlling at 0.35MPa, and the angle α that blows carrier mixture inlet tube and the spray gun person in charge is 30 °, and the caliber that blows carrier inlet pipe and spray gun pipeline is 25.4mm.
3, method according to claim 1 is characterized in that: the angle that blows carrier mixture inlet tube and the spray gun person in charge is the right angle, and the auxilliary airduct and the person in charge's angle is zero.
4, method according to claim 1 is characterized in that: the angle that blows carrier mixture inlet tube and auxilliary airduct and the spray gun person in charge is zero.
5, method according to claim 1, it is characterized in that: powdery solid C base reductant is stored handling machinery by reductive agent, by blowing carrier through transport pipe and spray gun, spray into and carry out restore job in the anode furnace, be applicable to that rotary type or tilting-type anode furnace use solid reductant to carry out restore job.
6, method according to claim 1, it is characterized in that: blow and to adopt single air port or two tuyere injection mode of connection between reductive agent system and the body of heater, single tuyere injection mode is promptly established cover storage handling machinery feed in stove separately and is carried out restoring operation in each air port; During two tuyere injection mode, configurable two cover reductive agents are stored handling machinerys, and an air port is to a cover handling machinery, or dispose a cover reductive agent and store handling machinery, and its outlet is divided into two, and blow powdery solid C base reductant to two air ports respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310110850 CN1229509C (en) | 2003-11-01 | 2003-11-01 | Method for using solid reductant in rotary type anode furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310110850 CN1229509C (en) | 2003-11-01 | 2003-11-01 | Method for using solid reductant in rotary type anode furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1540008A true CN1540008A (en) | 2004-10-27 |
| CN1229509C CN1229509C (en) | 2005-11-30 |
Family
ID=34335765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310110850 Expired - Lifetime CN1229509C (en) | 2003-11-01 | 2003-11-01 | Method for using solid reductant in rotary type anode furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1229509C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871051A (en) * | 2010-06-22 | 2010-10-27 | 昆明理工精诚科技有限责任公司 | New automatic spraying system for solid reducing agent |
| CN103056089A (en) * | 2012-12-18 | 2013-04-24 | 江西铜业股份有限公司 | Preparation process of oxidization and reduction air pipe |
| CN104593597A (en) * | 2015-02-16 | 2015-05-06 | 江西铜业股份有限公司 | Device for injecting pulverized-coal-based reducer |
-
2003
- 2003-11-01 CN CN 200310110850 patent/CN1229509C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871051A (en) * | 2010-06-22 | 2010-10-27 | 昆明理工精诚科技有限责任公司 | New automatic spraying system for solid reducing agent |
| CN101871051B (en) * | 2010-06-22 | 2012-08-22 | 昆明理工精诚科技有限责任公司 | New automatic spraying system for solid reducing agent |
| CN103056089A (en) * | 2012-12-18 | 2013-04-24 | 江西铜业股份有限公司 | Preparation process of oxidization and reduction air pipe |
| CN104593597A (en) * | 2015-02-16 | 2015-05-06 | 江西铜业股份有限公司 | Device for injecting pulverized-coal-based reducer |
| CN104593597B (en) * | 2015-02-16 | 2017-11-07 | 江西铜业股份有限公司 | A kind of fine coal base reductant blowing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1229509C (en) | 2005-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100404707C (en) | Method of extracting gold and silver from arsenic containing aurin ore | |
| CN101871053B (en) | Method for smelting ferronickel or nismatte with laterite-nickel ore | |
| CN111926280B (en) | High-entropy alloy coating of long-life spray gun for Isa smelting and preparation method thereof | |
| CN106011500A (en) | Molten carbon heating type induction furnace based vacuum magnesium production system and magnesium production method thereof | |
| CN102304623A (en) | Method and equipment for reducing impoverishment of copper converting slag | |
| CN102650002A (en) | Improved method for smelting laterite nickel ore to produce nickelferrite or nickel matte | |
| CN102268502B (en) | Spongy iron preparation method by smelting refractory iron ore (slag) with reduction rotary kiln | |
| CN1229509C (en) | Method for using solid reductant in rotary type anode furnace | |
| CN204022916U (en) | A kind of level tandem short route copper smelting device | |
| CN108251588A (en) | A kind of HIsmelt pit coals mix the process of spray strengthening smelting | |
| CN103205584B (en) | Production device and production method of manganese monoxide mineral powder | |
| CN102010922A (en) | Method for distributing raw materials with high zinc content in blast furnace with bell-less top | |
| CN111926281A (en) | Long-life spray gun ceramic coating for pizza smelting and preparation method thereof | |
| CN111020225A (en) | Novel furnace for simultaneous mixed smelting of antimony ore in same hearth through volatilization smelting and flash smelting and smelting method thereof | |
| PH12015000393B1 (en) | Flash smelting method for laterite-nickel ore | |
| CN105586498A (en) | Method for producing ferronickel through efficient step forking type rotary reduction furnace in direct reduction manner | |
| CN115337987A (en) | Method for producing refractory hematite Fe25-50% direct-production steelmaking reduced iron | |
| CN104451125B (en) | The shower roasting processing method of lateritic nickel ore | |
| CN104946829B (en) | A kind of 1800 cubic metres of blast furnaces improve the distributing method of sintering deposit utilization rate | |
| CN101736168A (en) | Oxygen-enriched smelting method of low-tin material fuming furnace | |
| CN211814607U (en) | Novel furnace for simultaneous mixed smelting of antimony ore volatilization smelting and flash smelting | |
| Butwell | Heap leaching of fine agglomerated tailings at Asamera's Gooseberry mine | |
| CN110724839A (en) | Preparation method of manganese-rich slag | |
| CN217651253U (en) | Molten steel slag powder spraying reduction device | |
| CN211546601U (en) | Steel scrap baking equipment for recycling flue gas of ladle refining furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20051130 |