CN107460340A - A kind of quick blow-in method of copper bottom-blown smelting stove - Google Patents
A kind of quick blow-in method of copper bottom-blown smelting stove Download PDFInfo
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- CN107460340A CN107460340A CN201710643156.5A CN201710643156A CN107460340A CN 107460340 A CN107460340 A CN 107460340A CN 201710643156 A CN201710643156 A CN 201710643156A CN 107460340 A CN107460340 A CN 107460340A
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- copper
- matte regulus
- oxygen
- copper matte
- oxygen rifle
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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
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Abstract
The invention discloses a kind of quick blow-in method of copper bottom-blown smelting stove.This method includes that oxygen rifle will be installed on the oxygen lance of bottom blowing furnace position after heating, blocks up real copper matte regulus mouth and simultaneously adds bed coke charcoal, copper matte regulus is added portionwise carries out fusing and form initial molten bath；Oxygen rifle is reinstalled again, is fed intake, starts slagging after the completion that feeds intake, put copper matte regulus, and detects the smelting slag slag type and matte grade of releasing, is reached requirement and is completed blow-on process.Blow-in method of the present invention makes that the molten bath time is short, fuel consumption is few, efficiency high；The fuel of addition is when the bath that copper matte regulus is formed reacts, heat utilization efficiency caused by reaction greatly improves, oxygen is passed through the bath of copper matte regulus formation, partial oxidation occurs to chemically react with copper matte regulus adds the generation of heat, heat utilization efficiency is improved, reduces fuel consumption；Reduce the consumption of raw material, shorten the blow-on time, production cost is low.
Description
Technical field
The invention belongs to non-ferrous metal metallurgy technical field, and in particular to a kind of quick blow-on side of copper bottom-blown smelting stove
Method.
Technical background
Copper bottom-blown smelting stove is a kind of Copper making technology that China possesses autonomous patent property, from 2008 at home
Since starting to promote the use of, the producer that uses at present have Dongying circumference, Shandong perseverance nation, packet header Huading, Zhongtiao Shan Mountain Yuanqu smeltery,
Sanmenxia Gorge Central Plains solution of gold smelting plant, Deposits, Yimen, Yunnan copper industry, Shuikoushan smeltery etc..Above-mentioned smeltery is in copper bottom-blown smelting stove blow-on
During, using same blow-in method.That is copper bottom-blown smelting stove blow-on, mainly produces 50~60 ° by stove, passes through 2-
3 copper matte regulus funnels connect one to one the interim feed opening reserved on platform of blanking and copper bottom-blown smelting stove feed opening, to protect
Card copper matte regulus can be flowed into smoothly in stove.
During molten bath is made, make copper matte regulus used in molten bath and be transported in advance on platform of blanking by belt, make molten bath and start
Afterwards, according in stove copper matte regulus melt speed, manually copper matte regulus is shoveled to interim feed opening with spade, by interim feed opening bottom with
Copper matte regulus, is progressively sent into stove by the copper matte regulus funnel of body of heater feed opening connection using height fall；Its heat-supplying mode is bottom-blown smelting
The major-minor burner combustion natural gas or heavy oil at stove both ends carry out heat supply, and the fusing of copper matte regulus relies primarily on main and side burner and is ejected into
The radiations heat energy of refractory material carries out material in the heat and stove of copper matte regulus surface flame, and general burn-off rate is 2~5t/h, fusing
It is a collection of again plus a collection of, until the copper matte regulus for preparing to make molten bath has been melted, form molten bath.According to the size of bottom-blown smelting stove and make molten
Copper matte regulus weight needed for pond, the blow-on time of internal copper bottom-blown smelting stove are generally 2~4 days.
These presently used blow-in methods have the following disadvantages：(1) by headwall main and side burner burning natural gas or
Heavy oil heat supply, most of heat are taken away with flue gas, and heat utilization efficiency is low, Fuel Consumption is big, blow-on is costly；(2) make molten
When copper matte regulus is melted in pond, because heat utilization efficiency is too low, copper matte regulus fusing is slow, the blow-on time is caused to grow；(3) smelting furnace is gone to when making molten bath
50~60 °, copper matte regulus funnel need to be installed additional and manually added into stove and make copper matte regulus needed for molten bath, workload is big and cumbersome.
The content of the invention
In order to solve the above problems, the invention provides a kind of quick blow-in method of copper bottom-blown smelting stove.This method institute
The start-up of the furnace stated is simple, heat utilization efficiency is high, fuel consumption is few, and the blow-on time is short.
The present invention is achieved by the following technical solutions
A kind of quick blow-in method of copper bottom-blown smelting stove, this method comprise the following steps：
(1) baker：According to conventional oven method by copper bottom-blown smelting baking oven stove to 1200 DEG C；
(2) molten bath is made：
A. after step (1) baker is completed, 3~6 oxygen rifles (oxygen rifle at this is installed in the oxygen rifle area of copper bottom-blown smelting stove：
For material, make molten bath use；It is identical with normal production oxygen rifle, but the gas flow and pressure that control are different), and to oxygen rifle
Oxygen pipeline, the regulating valve of gas pipeline are adjusted, and single oxygen rifle oxygen of adjustment is passed through pressure and intake, natural gas
Be passed through pressure and intake；
The pressure for controlling single oxygen rifle to be passed through oxygen described in the step is 0.1~0.2MPa, flow is 200~300Nm3/
H, the purity of oxygen used is 99.5%；The pressure for the natural gas that single oxygen rifle is passed through is 0.1~0.2MPa, flow be 100~
150Nm3/h.B. after the oxygen rifle described in step a is installed and adjusted, copper bottom-blown smelting furnace body is transferred into normotopia, and (body of heater turns
Enter normotopia：I.e. normal production when position, i.e., after body of heater turns 90 °, oxygen rifle position goes to lower section, and the feed opening on body of heater is gone on just
Side)；Then start clay gun machine the copper matte regulus mouth of smelting furnace is stifled real, then the feed opening of the smelting stove of bed coke charcoal is added in smelting furnace
Carry out shop fixtures；
The addition of bed coke charcoal described in the step is 500~1000kg, adds bed coke charcoal when carrying out shop fixtures, smelting furnace blanking
The thickness of oxygen rifle area coke layer is 10~20cm immediately below mouthful.
C. the copper matte regulus mouth described in step b is blocked up after reality and the completion of bed coke charcoal shop fixtures, is melted by belt-conveying by copper bottom blowing
Bottom copper matte regulus is added portionwise into smelting furnace for furnace feed opening, and the copper sulphur of addition gradually melts in smelting furnace, and the copper matte regulus of addition is complete
The copper matte regulus liquid level formed after running down is 100 apart from the distance of smelting furnace cinder notch not less than 600mm and its highest liquid level
~200mm；(copper matte regulus flows directly into feed opening by belt-conveying, and first adds next group again after having melted, and sequentially adds straight
It is added completely into desired copper matte regulus), after bottom copper matte regulus is completely melt, that is, form initial molten bath；
The copper matte regulus added described in the step is 5~7 hours the time required to melting completely；In the copper matte regulus melting process of addition
In, with the increase of bottom copper matte regulus addition, copper matte regulus liquid level is stepped up；Single branch oxygen rifle oxygen and natural gas pressure gradually increases, directly
After reaching certain pressure to single branch oxygen rifle oxygen and natural gas pressure, oxygen rifle pressure is no longer lifted, to prevent liquid level splash in stove；
Control tolerance and pressure not too much, to prevent scaling loss rifle area refractory material.
(3) feed intake：
D. described in step (2) make molten bath complete after, body of heater produces, and removes what is installed described in step (2) a on oxygen rifle position
Oxygen rifle, normal production oxygen rifle then is installed in oxygen rifle area, and adjusts the compressed air require and pressure of single branch oxygen rifle after installation
Power, and the oxygen flow and pressure of single branch oxygen rifle；After the completion of adjustment, bottom-blown smelting stove is gone into normotopia；
The compressed air require of the single branch oxygen rifle of regulation is 550Nm described in the step3/ h, pressure are 0.5~0.6MPa, described
The volumn concentration of oxygen is 70~73% in compressed air；Oxygen (oxygen purity 99.5%) flow of single branch oxygen rifle is
1075Nm3/ h, pressure are 0.5~0.6MPa.
E. after bottom-blown smelting stove being gone into normotopia described in step d, start constant feeder and start to feed intake, to bottom-blown smelting stove
After the material of interior input is completely melt, that is, complete the process that feeds intake；
The addition material for starting to feed intake described in the step is copper concentrate, quartz, the compound of fuel char particle, and initial charge
Control is in 30~80t/h.After the completion for the treatment of sulfuric acid plant conversion procedure catalyst vulcanization saturation, thrown at full capacity according to production requirement
Material.
(4) slagging, put copper matte regulus：
F. after feeding intake described in step (3), when liquid level reaches slag dam height in smelting furnace, the cinder notch of smelting furnace is opened
Start slagging (release in the slag of smelting slag and be not mixed with copper matte regulus)；When copper matte regulus liquid level apart from cinder notch be 200~400mm when, open copper
Sulfonium mouth starts to put copper matte regulus；Smelting slag thickness of slag layer is controlled during being somebody's turn to do in 200~400mm；
G. the step f smelting slags released and copper matte regulus are detected, until smelting slag slag type and matte grade reach requirement,
Start normal production, the blow-on of copper bottom-blown smelting stove is completed.
The requirement that reaches described in the step is：Fe in smelting slag：SiO2Mass ratio be 1.5~1.9；The matter of copper in copper matte regulus
It is 70~78% to measure percentage.
During blow-on of the present invention, copper matte regulus fusing and the temperature control to feed intake when melting in stove are added 1100
~1200 DEG C, add after copper matte regulus and caused by after feeding intake flue gas discharged by the flue gas mouth of smelting furnace (cool through boiler,
Sulfuric acid plant is sent to carry out relieving haperacidity after electric dust-collecting and dust-removing, wherein boiler export flue-gas temperature is 350-440 DEG C).
Compared with prior art, the present invention has following positive beneficial effect
(1) heat utilization efficiency for the making molten bath process height in blow-in method of the present invention, copper matte regulus burn-off rate are fast：
The origin of heat that tradition makes molten bath material is mainly the major-minor burner combustion natural gas or again at bottom-blown smelting stove both ends
Heat caused by oil, and copper matte regulus fusing relies primarily on main and side burner and is ejected into the heat that copper matte regulus surface flame is distributed；By
In body of heater both ends headwall burner away from copper matte regulus below feed opening farther out, general distance is 6~15 meters, big portion caused by burner
Divide heat to be taken away by the air of top in stove, cause the serious waste of heat and surrounding environment is impacted, heat utilization efficiency is big
It is big to reduce.
It is mainly natural gas and oxygen combustion in oxygen rifle that origin of heat needed for molten bath is made in blow-in method of the present invention
Heat supply；The heat-supplying mode has the characteristics that：First, natural gas and oxygen react in copper matte regulus bath in oxygen rifle, heat is produced
Big with copper matte regulus contact area, heat utilization efficiency is high；Second, natural gas and oxygen are sprayed into inside copper matte regulus from bottom in oxygen rifle, it is carried out
Dynamic agitation, it can speed up the fusing of copper matte regulus；Third, natural gas and oxygen are sprayed into inside copper matte regulus in oxygen rifle, the process reacted
In, there is partial oxidation to be reacted with the sulphur in copper matte regulus and iron and carry out heat release, there is provided more heats accelerate the fusing of copper matte regulus；
(2) the blow-in method time of the present invention is short, can be transitioned into normal smelting production rapidly, from start to make molten bath to
Feed intake, then to the first bag smelting slag is put, the time used was less than 8 hours；
(3) blow-in method fuel consumption of the present invention is few：Make that the molten bath time is short, reduces fuel consumption；Fuel exists
The bath reaction that copper matte regulus is formed, heat utilization efficiency caused by reaction is high, fuel consumption is few；Oxygen is passed through the molten bath of copper matte regulus formation
When internal, partial oxidation chemically reacts with copper matte regulus, produces partial heat, adds the yield of heat, saved fuel
Dosage.Blow-in method consumption of raw materials of the present invention is few, expense is low, greatly reduces production cost；
(4) blow-in method of the present invention is simple to operate, and the time is short, efficiency high.
Figure of description
Fig. 1 is the structural representation of copper bottom-blown smelting stove described in the embodiment of the present invention 1,
The meaning of symbol expression is in figure：1 represents copper matte regulus discharge port, and 2 represent main burner mouth, and 3 represent that first visits material mouth,
4 the first feed openings of expression, 5 the second feed openings of expression, 6 expression temperature-measuring ports, 7 expression flue gas discharge openings, 8 expression the second spy material mouths, 9
Auxiliary burner opening is represented, 10 represent slag tap, and 11 represent oxygen rifle area；T1, T2, T3, T4, T5, T6, T7, T8, T9, T10 distinguish table
Show the installation site of oxygen rifle.
Embodiment
The present invention is described in more details below by specific embodiment, but be not intended to limit the invention
Protection domain.
Embodiment 1
The bottom-blown smelting stove size of the embodiment blow-on is：Diameter 4.4m；Length 18m.
The quick blow-in method of the copper bottom-blown smelting stove, comprises the following steps：
(1) baker：According to conventional oven method by copper bottom-blown smelting baking oven stove to 1200 DEG C；
(2) molten bath is made：
A. after step (1) baker is completed, rifle position T2, T4, T5, T7 in the oxygen rifle area of copper bottom-blown smelting stove load onto 4
Oxygen rifle (oxygen rifle at this：For material, make molten bath use, but the flow and pressure of control gas identical with normal production oxygen rifle
It is different), and oxygen pipeline to oxygen rifle, the regulating valve of gas pipeline are adjusted, single oxygen rifle oxygen of adjustment, natural gas
It is passed through pressure and intake；It is 0.16MPa, flow to control single oxygen rifle to be passed through the pressure of oxygen (purity of oxygen is 99.5%)
For 300Nm3/h；The pressure for controlling single oxygen rifle to be passed through natural gas is 0.16MPa, flow 150Nm3/h；
B. after the oxygen rifle described in step a is installed and adjusted, body of heater is transferred to normotopia, and (body of heater is transferred to normotopia, i.e. normal life
After position during production, i.e. body of heater turn 90 °, oxygen rifle position goes to lower section, directly over the feed opening on body of heater is gone to)；Then mud is started
Big gun machine is stifled real by the copper matte regulus mouth of smelting furnace, then bed coke charcoal is added into smelting furnace from the first feed opening of smelting furnace and the second feed opening
Interior carry out shop fixtures；Wherein, the addition of bed coke charcoal is 1t, oxygen rifle area coke layer immediately below the first feed opening and the second feed opening
Thickness is 10~20cm；
C. the copper matte regulus mouth described in step b is blocked up after reality and the completion of coke shop fixtures, and cupric 60% is added portionwise in smelting furnace
Bottom copper matte regulus, copper matte regulus flow directly into the first feed opening and the second feed opening, initial input 5t/h, i.e. first by belt-conveying
Individual hour material 5t, then second hour material 10t successively, the 3rd hour material 20t, the 4th hour material 30t,
Five hours material 40t, the 6th hour material 45t, add up material 150t altogether.Material is visited in copper matte regulus fusion process from first in time
Mouth and second visits the fusing situation that material mouth observes copper matte regulus in the burn-off rate and stove of copper matte regulus, after 150t copper matte regulus all melts, melts
The liquid level in pond is 850mm, after bottom copper matte regulus is completely melt, that is, forms initial molten bath；In copper matte regulus addition and fusion process,
The pressure change (gas pressure change and oxygen pressure change are consistent during being somebody's turn to do) for being passed through oxygen is as shown in table 1；
The copper matte regulus added is 6 hours the time required to being completely melt；In the copper matte regulus fusion process of addition, add with bottom copper matte regulus
Enter the increase of amount, copper matte regulus liquid level is stepped up, the oxygen pressure of single branch oxygen rifle and gas pressure are being continuously increased；Pressure is equal
It is to be increased to 0.4MPa not to be further added by afterwards, to prevent liquid level splash in stove；The tolerance of single branch oxygen rifle oxygen and natural gas and
Pressure is not too much, to prevent scaling loss rifle area refractory material.
(3) feed intake, slagging, put copper matte regulus：
D. described in step (2) make molten bath complete after, body of heater produces, remove oxygen rifle position T2, T4 described in step (2) a,
The oxygen rifle installed at T5, T7, then normal production oxygen rifle is installed at rifle position T1, T2, T4, T5, T7, T8, T9, and adjusts peace
(it is 550Nm to adjust to single branch oxygen rifle compressed air require to the compressed air require and pressure of single branch oxygen rifle after dress3/ h, pressure
For 0.6MPa, the volumn concentration of oxygen is 70~73% in compressed air used), and the oxygen flow of single branch oxygen rifle and
(it is 1075Nm to adjust to the oxygen flow of single branch oxygen rifle to pressure3/ h, pressure 0.55MPa)；After the completion of adjustment, by bottom-blown smelting
Stove goes to normotopia；
E. after bottom-blown smelting stove being gone into normotopia described in step d, start constant feeder and start to feed intake, initial charge is
60t/h, the material of the addition is copper concentrate, quartz, the mixture of fuel char particle, wherein the refined copper ore deposit 54t, the quartz that add
5.7t, fuel char particle 0.3t；Feed intake after 2 hours (putting into 120t material altogether), liquid level reaches 1165mm in stove, opens cinder notch and opens
Beginning slagging, visit material mouth by the first of smelting furnace or the second spy material mouth measures copper matte regulus liquid level in stove and reaches 900mm, open copper matte regulus mouth
Start to put copper matte regulus, during slagging and putting copper matte regulus, the slag and copper matte regulus of releasing are detected, wherein Fe in smelting slag：
SiO2=1.7, copper matte regulus is 70% containing copper grade；Technical indicator meets production requirement, you can starts normal production.
Embodiment 2
The bottom-blown smelting stove size of the embodiment blow-on is：Diameter 4.4m；Length 18m.
The quick blow-in method of the copper bottom-blown smelting stove, comprises the following steps：
(1) baker：According to conventional oven method by copper bottom-blown smelting baking oven stove to 1200 DEG C；
(2) molten bath is made：
A. after step (1) baker is completed, rifle position T2, T3, T4, T5, T7 in the oxygen rifle area of copper bottom-blown smelting stove load onto 5
Branch oxygen rifle (oxygen rifle at this：For material, make molten bath use, gas flow and pressure identical with normal production oxygen rifle, but controlling
Power is different), and oxygen pipeline to single branch oxygen rifle, the regulating valve of gas pipeline are adjusted, and adjust single oxygen rifle oxygen, day
Right gas is passed through pressure and intake；Control single oxygen rifle be passed through the pressure of oxygen (oxygen purity 99.5%) for 0.16MPa,
Flow is 300Nm3/h；The pressure that single oxygen rifle is passed through natural gas is 0.16MPa, flow 150Nm3/h；
B. after the oxygen rifle described in step a is installed and adjusted, body of heater is transferred to normotopia, and (body of heater is transferred to normotopia, i.e. normal life
After position during production, i.e. body of heater turn 90 °, oxygen rifle position goes to lower section, directly over the feed opening on body of heater is gone to)；Then mud is started
Big gun machine is stifled real by the copper matte regulus mouth of smelting furnace, then bed coke charcoal is added into smelting furnace from the first feed opening of smelting furnace and the second feed opening
Interior carry out shop fixtures；Wherein, the addition of bed coke charcoal is 1t, oxygen rifle area coke layer immediately below the first feed opening and the second feed opening
Thickness is 10~20cm.
C. the copper matte regulus mouth described in step b is blocked up after reality and the completion of coke shop fixtures, and cupric 60% is added portionwise in smelting furnace
Bottom copper matte regulus, copper matte regulus flows directly into the first feed opening and the second feed opening, initial input 5t/h, i.e. by belt-conveying
One hour material 5t, then second hour material 10t, the 3rd hour material 20t, the 4th hour material 30t, the 5th
Individual hour material 45t, the 6th hour material 50t, add up material 160t altogether.In copper matte regulus fusion process in time from material mouth is visited
The fusing situation of copper matte regulus in the burn-off rate and stove of copper matte regulus, all after fusing, the liquid level in molten bath is 160t copper matte regulus
900mm, after bottom copper matte regulus is completely melt, that is, form initial molten bath；In copper matte regulus adition process, single branch oxygen rifle is passed through the pressure of oxygen
Power change (gas pressure changes consistent with oxygen pressure change) is as shown in table 1；
The copper matte regulus added is 6 hours the time required to being completely melt；In the copper matte regulus melting process of addition, add with bottom copper matte regulus
Enter the increase of amount, copper matte regulus liquid level is stepped up, and the oxygen pressure and gas pressure of single branch oxygen rifle constantly increase；But increase to
After 0.45MPa, single branch oxygen rifle pressure is no longer lifted, to prevent liquid level splash in stove；Single branch oxygen rifle oxygen is controlled during being somebody's turn to do
And the throughput and pressure of natural gas be not too much, to prevent scaling loss rifle area refractory material.
(3) feed intake, slagging, put copper matte regulus：
D. described in step (2) make molten bath complete after, body of heater produces, remove oxygen rifle position T2, T3 described in step (2) a,
The oxygen rifle installed at T4, T5, T7, then normal production oxygen rifle is installed at rifle position T1, T2, T4, T5, T7, T8, T9, and adjusted
(it is 550Nm to adjust to single branch oxygen rifle compressed air require to the compressed air require and pressure of single branch oxygen rifle after section installation3/h、
Pressure is 0.6MPa, and the volumn concentration of oxygen is 70~73% in compressed air used), and the oxygen stream of single branch oxygen rifle
(it is 1075Nm to adjust to the oxygen flow of single branch oxygen rifle for amount and pressure3/ h, pressure 0.55MPa)；After the completion of adjustment, by bottom blowing
Smelting furnace goes to normotopia；
E. after bottom-blown smelting stove being gone into normotopia described in step d, start constant feeder and start to feed intake, initial charge is
45t/h, the material of the addition is copper concentrate, quartz, the mixture of fuel char particle, wherein the refined copper ore deposit 40t, the quartz that add
4.5t, fuel char particle 0.5t；Feed intake after 2 hours (putting into 90t material), liquid level reaches 1200mm in smelting furnace, opens cinder notch
Start slagging, when reaching 950mm by copper matte regulus liquid level in the first spy material mouth and the second spy material mouth measurement stove, open copper matte regulus mouth and start
Copper matte regulus is put, during slagging and putting copper matte regulus, the slag and copper matte regulus of releasing are detected, wherein Fe in smelting slag：SiO2=
1.65, copper matte regulus is 71% containing copper grade；Technical indicator meets production requirement, you can starts normal production.
Oxygen pressure changes during the blow-on of table 1 adds copper matte regulus
| Accumulative discharge quantity/t | Oxygen pressure/MPa |
| 5-25 | 0.16 |
| 25-40 | 0.22 |
| 40-65 | 0.27 |
| 65-100 | 0.32 |
| 100-150 | 0.40 |
| 150-170 | 0.45 |
Claims (8)
1. a kind of quick blow-in method of copper bottom-blown smelting stove, this method comprise the following steps：
(1) baker：According to conventional oven method by copper bottom-blown smelting baking oven stove to 1200 DEG C；
(2) molten bath is made：
A. after step (1) baker is completed, 3~6 oxygen rifles are installed in the oxygen rifle area of copper bottom-blown smelting stove, and to the oxygen of oxygen rifle
Pipeline, the regulating valve of gas pipeline are adjusted, and single oxygen rifle oxygen of adjustment is passed through pressure and intake, single oxygen rifle day
Right gas is passed through pressure and intake；
B. after the oxygen rifle described in step a is installed and adjusted, copper bottom-blown smelting furnace body is transferred to normotopia；Then clay gun is started
Machine is stifled real by the copper matte regulus mouth of smelting furnace, then the feed opening of the smelting stove of bed coke charcoal is added in smelting furnace and carries out shop fixtures；
C. the copper matte regulus mouth described in step b is blocked up after reality and the completion of bed coke charcoal shop fixtures, passes through copper bottom-blown smelting stove by belt-conveying
Bottom copper matte regulus is added portionwise into smelting furnace for feed opening, and the copper matte regulus of addition gradually melts in smelting furnace, added in smelting furnace
Bottom copper matte regulus forms just molten bath after being completely melt；
(3) feed intake：
D. described in step (2) make molten bath complete after, body of heater produces, and removes the oxygen installed described in step (2) a on oxygen rifle position
Rifle, then normal production oxygen rifle is installed, and adjusts the compressed air require and pressure of single branch oxygen rifle after installation, and single branch
The oxygen flow and pressure of oxygen rifle；After the completion of adjustment, bottom-blown smelting stove is gone into normotopia；
E. after bottom-blown smelting stove being gone into normotopia described in step d, start constant feeder and start to feed intake, thrown into bottom-blown smelting stove
After the material entered is completely melt, that is, complete the process that feeds intake；
(4) slagging, put copper matte regulus：
F. after the progress that feeds intake described in step (3), when its liquid level reaches slag dam height, the cinder notch for opening smelting furnace starts to put
Smelting slag；When copper matte regulus liquid level apart from cinder notch be 200~400mm when, open copper matte regulus mouth start to put copper matte regulus；Melting is controlled during being somebody's turn to do
Slag thickness of slag layer is in 200~400mm；
G. the step f smelting slags released and copper matte regulus are detected, until smelting slag slag type and matte grade reach requirement, started
Normal production, the blow-on of copper bottom-blown smelting stove are completed.
2. the quick blow-in method of copper bottom-blown smelting stove according to claim 1, it is characterised in that step (2) a steps institute
State control single oxygen rifle to be passed through oxygen purity be 99.5%, the oxygen be passed through pressure be 0.1~0.2MPa, flow 200
~300Nm3/h；The gas pressure that single oxygen rifle is passed through is 0.1~0.2MPa, flow is 100~150Nm3/h。
3. the quick blow-in method of copper bottom-blown smelting stove according to claim 1, it is characterised in that add described in step (2) b
The addition for entering the bed coke charcoal in smelting furnace is 500~1000kg；When bed coke charcoal carries out shop fixtures in smelting furnace, smelting furnace blanking
The thickness of oxygen rifle area coke layer is 10~20cm immediately below mouthful.
4. the quick blow-in method of copper bottom-blown smelting stove according to claim 1, it is characterised in that add described in step (2) c
The copper matte regulus entered is 5~7 hours the time required to being completely melt；In the copper matte regulus fusion process of addition, with the increasing of bottom copper matte regulus addition
Add, copper matte regulus liquid level is stepped up；The pressure that oxygen and natural gas is passed through with the raising of copper matte regulus liquid level, single branch oxygen rifle gradually increases
Greatly.
5. the quick blow-in method of copper bottom-blown smelting stove according to claim 1, it is characterised in that described in step (2) c
After the copper matte regulus added in smelting furnace is completely melt, the liquid level formed is not less than 600mm and its highest liquid level is apart from smelting furnace
The distance of cinder notch is 100~200mm.
6. the quick blow-in method of copper bottom-blown smelting stove according to claim 1, it is characterised in that tune described in step (3) d
The compressed air require for saving single branch oxygen rifle is 550Nm3/ h, pressure are 0.5~0.6MPa, the volume of oxygen in the compressed air
Percentage composition is 70~73%；The oxygen flow of single branch oxygen rifle is 1075Nm3/ h, pressure are 0.5~0.6MPa.
7. the quick blow-in method of copper bottom-blown smelting stove according to claim 1, it is characterised in that opened described in step (3) e
The addition material for beginning to feed intake is the compound of copper concentrate, quartz and fuel char particle, and initial charge control is in 30~80t/h.
8. the quick blow-in method of copper bottom-blown smelting stove according to claim 1, it is characterised in that described in step (4) g
Reaching requirement is：Fe in gained smelting slag：SiO2Mass ratio be 1.5~1.9；In copper matte regulus the mass percent of copper be 70~
78%.
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Cited By (3)
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| CN111763833A (en) * | 2020-07-22 | 2020-10-13 | 包头华鼎铜业发展有限公司 | Oxygen-enriched bottom blowing converting furnace for converting liquid copper matte into copper |
| CN111809064A (en) * | 2020-07-13 | 2020-10-23 | 重庆龙煜精密铜管有限公司 | Reserved melting groove type melting process for red copper melting furnace |
| CN111945012A (en) * | 2020-07-01 | 2020-11-17 | 中国恩菲工程技术有限公司 | Method for manufacturing molten pool in side-blown smelting furnace thermal state |
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Application publication date: 20171212 |