CN109385521A - A kind of production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting - Google Patents
A kind of production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting Download PDFInfo
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- CN109385521A CN109385521A CN201811570909.5A CN201811570909A CN109385521A CN 109385521 A CN109385521 A CN 109385521A CN 201811570909 A CN201811570909 A CN 201811570909A CN 109385521 A CN109385521 A CN 109385521A
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/11—Removing sulfur, phosphorus or arsenic other than by roasting
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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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
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
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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
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
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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
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
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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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
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Abstract
The invention discloses a kind of production technologies of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting, belong to smelting field of nonferrous metal.The technique includes the following steps: 1) ingredient: supplementary material being uniformly mixed in mass ratio, obtains mixture；2) it pelletizes: spherolite is made in mixture；3) oxidizing semlting: manufactured spherolite is sent into oxygen-rich oxide furnace and carries out low-temperature oxidation melting, output liquid oxidizing slag after melting enters reduction melting by chute；Output high concentration SO after melting2Flue gas, cooling send relieving haperacidity after gathering dust.The present invention: 1) it is directed to the equal output low concentration SO of the existing oxidizing semlting production technology of jamesonite2Qualified discharge after environmental protection treatment is needed, by using oxygen enriched molten bath melting, effectively increases the SO after melting in flue gas2Concentration reaches the conventional acid making system requirement of configuration, reduces pollution, improves the rate of recovery；2) low temperature oxygen-rich oxide technique is used, dust rate is greatly reduced, while flue dust quality is also improved.
Description
[technical field]
The present invention relates to non-ferrous metal metallurgy techniques, and in particular to a kind of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting
Production technology.
[background technique]
Processing for jamesonite uses smelting process process to be: antimony lead concentrate → fluidized bed roasting → sintering at present
Disk sintering → blast furnace reduction → needle antimony metal.Its process flow are as follows: jamesonite concentrate is through boiling roaster desulfurization, calcining
With jamesonite concentrate, returning charge, quartz sand, agstone, the common mix of anthracite, it is sintered using sintering pan, and
Agglomerate is through retailoring of blast furnace, output antimonial lead afterwards.But defect existing for the tradition smelting process and deficiency mainly have:
(1) roasting, sintering machine, blast furnace equal output low concentration SO everywhere2Flue gas does not simply fail to configure conventional sulphuric acid plant
Sulfuric acid is produced, qualified discharge after desulfurization process is also carried out to it.
(2) process flow is long, and intermediate link is more, and it is bigger to require returning charge to match in sintering process, moves in circles, causes
Production efficiency is low, intermediate product is more, metal recovery rate is low.
(3) ratio, the side such as production efficiency, unit product production cost, investment yield are smelted with using oxygen-enriched, High-Temperature Strengthening
There is larger gap in face.
(4) energy consumption is high.The chemical reaction dispersion and heat utilization of sulphur are all lower in raw material, and star metal unit product comprehensive energy consumption reaches
2400~2500kgce/t, while flue gas disperses, temperature is low, and waste heat boiler Mist heat recovering can not be arranged.
(5) smelting such as sintering machine production on-site environment contamination control difficulty is big, works under hard conditions.
(6) production automation degree is lower.
(7) blast furnace reduction needs metallurgical coke, cannot directly use coal.
[summary of the invention]
To solve the above-mentioned problems, the object of the present invention is to provide a kind of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation meltings
Production technology, the production technology: 1) more or less output is low for the existing oxidizing semlting production technology of jamesonite
Concentration SO2Qualified discharge after environmental protection treatment is needed, by using oxygen enriched molten bath melting, effectively increases the SO after melting in flue gas2
Concentration reaches the conventional acid making system requirement of configuration, reduces pollution, improves the rate of recovery；2) low temperature oxygen-rich oxide technique is used, greatly
Width reduces dust rate, while flue dust quality is also improved.
Realize that the technical solution of the object of the invention is as follows:
A kind of production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting, includes the following steps:
(1) ingredient: it will include that lead antimony composite ore, quartz sand, the raw material of lime stone and auxiliary material are uniformly mixed in mass ratio, obtain
Mixture；Wherein, lead antimony composite ore is raw material, and quartz sand, lime stone are auxiliary material；
(2) it pelletizes: the spherolite that partial size is 12~20mm is made in mixture, the water content of spherolite is 5~10%；
(3) oxidizing semlting: by manufactured spherolite be sent into oxygen-rich oxide furnace carry out oxidizing semlting, by charging, heating, deslagging into
Row discontinuous running；Firstly, controlling furnace roof flue gas exit temperature 750 to mixture desulfurization, dearsenification using low temperature oxygen-rich oxide technique
~850 DEG C, oxygen material ratio, charging rate and the progress of furnace roof exhanst gas outlet tiny structure determined according to above-mentioned raw materials ingredient and the working of a furnace
Feed operation；Secondly, stopping charging after the completion of every furnace charging, anthracite grain is added, heating operation is carried out to oxygen-rich oxide furnace；So
Afterwards, after furnace roof flue gas exit temperature rises to 850 DEG C~950 DEG C, stop that anthracite grain is added, carry out deslagging operation, output liquid
Lead antimony oxidizing slag enters reduction melting by chute.
Further, further include the recycling of step (4) ash-laden gas: the ash-laden gas of oxygen-rich oxide furnace output is through waste heat boiler
Recovery waste heat, cottrell gather dust, be quenched dearsenification and bag collection after send sulfuric acid plant relieving haperacidity, the flue dust of waste heat boiler output returns
Melt back refining, the flue dust of cottrell output send reverberatory furnace to produce 2# antimony.
Further, the lead antimony composite ore is 15% or more leaded mass ratio by representative of jamesonite, contains antimony
The lead antimony composite ore of 10% or more mass ratio.
Further, the mass ratio of the lead antimony composite ore, quartz sand and lime stone is 100:3-10:3-5.
Further, the mode that is blown into of oxygen-enriched air uses bottom blowing mode in the oxygen-rich oxide furnace.
Further, oxygen material ratio is 200-240Nm in the step (3)3/ t, charging rate 12-14t/h, furnace roof cigarette
It is -0.1~-50Pa that gas, which exports tiny structure, and the time of charging is 70-80min, and the time of heating is 20~30min.
Further, SO in the ash-laden gas of output in the oxygen-rich oxide furnace2The concentration of gas is 10% or more.
Further, the dust rate of the oxygen-rich oxide furnace output is 10% or less.
Further, the whole flow process of the production technology is all made of the control of DCS control system.
By using above technical scheme, the invention has the benefit that
(1) strong to adaptability to raw material: it is intractable using jamesonite as representative that the present invention can directly handle prior art
15% or more leaded mass ratio, 10% or more mass ratio containing antimony middle-low grade lead antimony composite ore.
(2) environmentally friendly: 1. fusion process carries out in closed oxygen-rich oxide furnace, can stability contorting oxygen-rich oxide furnace in production
Exhanst gas outlet micro-negative pressure operation, avoids SO2Flue gas escapes；2. the SO of oxygen-rich oxide furnace output2Flue gas concentration be up to 10% with
On, the conventional acid making system requirement of configuration, tail gas qualified discharge after relieving haperacidity can be fully met；3. after concentrate and the granulation of auxiliary material ingredient
Directly enter furnace, without being sintered back powder operation；4. only with oxygen-rich oxide furnace direct oxidation melting, flushing and casting environment is excellent, solution
Traditional handicraft of having determined configures sintering machine, more serious problem is polluted in the production scene of blast furnace.5. molten using oxygen-rich oxide molten bath
Refining, instead of sintering machine-air blower air blast, smoke discharge amount is significantly reduced, while being carried in flue gas evacuation procedure
Dust rate reduces, and year-on-year exhaust gas volumn reduces about 2/3.Furthermore flue gas is also gathered dust, dearsenification is handled, and the tail gas for discharging the present invention is dirty
Dye greatly reduces, and has reached discharge standard.
(3) low energy consumption: 1. aoxidizing jamesonite concentrate using oxygen-rich oxide furnace, can realize autogenous smelting substantially, enters furnace original
Material is not required to or only needs a small amount of coal blending concurrent heating；The warm sludge of oxygen-enriched air smelting oxidation furnace output by slag chute flow directly into oxygen-enriched reduction furnace into
Row reduction reaction, thermal energy make full use of, and fuel consumption accordingly greatlys save.Star metal product comprehensive energy consumption is 1521.32kgce/t,
Far below existing sintering-blast furnace process, energy-saving effect is clearly.2. can mating waste heat boiler recycling gas melting furnace flue
Waste heat, a large amount of thermal energy are utilized.
(4) rate of recovery is high: the valuable element rate of recovery of the present invention is listed as follows:
| Sb | Pb | S | Ag |
| > 94% | > 96% | > 95% | > 98% |
(5) automatization level is high: whole flow process of the present invention all uses DCS control system, realize ingredient, granulation, oxygen supply,
Melting, waste heat boiler, boiler recirculated water, electricity gather dust, the whole processes, the centralized control of armamentarium such as high-temperature blower.
(6) operating rate is high: actual production effectively feeds intake operating rate > 95%, year effective operation time > 8000h, i.e., >
330d。
(7) production cost reduces: oxygen-enriched air smelting process flow simplifies, and is not required to back powder and sintering process, passes through oxygen-enriched reinforcing
It smelts, so that production efficiency greatly improves, while power and fuel consumption are few.And since the new technological flow is short, equipment dress
Set can domestic fabrication and installation, the more original technique escapable cost 40%~60% of the year-on-year cost of system can save land area
40% or so.
[specific embodiment]
Embodiment 1
A kind of production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting, includes the following steps:
(1) ingredient: jamesonite, quartz sand, lime stone 100:9:4 in mass ratio are uniformly mixed, mixture is obtained；
(2) it pelletizes: the spherolite that partial size is 12~15mm is made in mixture, the water content of spherolite is 5~8%；
(3) oxidizing semlting: the oxygen-rich oxide furnace that manufactured spherolite is sent into oxygen-enriched air bottom blowing is subjected to oxidizing semlting, presses and adds
Material, heating, deslagging carry out discontinuous running.Firstly, controlling furnace roof to mixture desulfurization, dearsenification using low temperature oxygen-rich oxide technique
750 DEG C of flue gas exit temperature, oxygen material ratio 220Nm3/ t, charging rate 12t/h, furnace roof -0.1~-10Pa of exhanst gas outlet negative pressure into
Row charging operation, feed 70min after stop charging, be added anthracite grain carry out heating operation 20min, to furnace roof exhanst gas outlet temperature
After degree rises to 850 DEG C, stops that anthracite grain is added, carry out deslagging operation, output liquid lead antimony oxidizing slag enters richness by chute
Hydrogen reduction melting.
(4) ash-laden gas recycles: through detecting, SO in the ash-laden gas of oxygen-rich oxide furnace charging phase output2Flue gas concentration reaches
10% or more, the dust rate of oxygen-rich oxide furnace output is 10% or less；Ash-laden gas is through waste heat boiler recovery waste heat, cottrell
It gathers dust, be quenched after dearsenification and bag collection and send sulfuric acid plant relieving haperacidity, the flue dust of waste heat boiler output returns to melting, and cottrell produces
Flue dust out send reverberatory furnace to produce 2# antimony.
In the embodiment of the present invention, the whole flow process of the production technology is all made of the control of DCS control system, entire to improve
The degree of automation of process.
Embodiment 2
A kind of production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting, includes the following steps:
(1) ingredient: jamesonite, flue dust, quartz sand, lime stone 100:15:10:5 in mass ratio are uniformly mixed, obtained
Mixture；
(2) it pelletizes: the spherolite that partial size is 15~20mm is made in mixture, the water content of spherolite is 8~10%；
(3) oxidizing semlting: the oxygen-rich oxide furnace that manufactured spherolite is sent into oxygen-enriched air bottom blowing is subjected to oxidizing semlting, presses and adds
Material, heating, deslagging carry out discontinuous running.Firstly, controlling furnace roof to mixture desulfurization, dearsenification using low temperature oxygen-rich oxide technique
850 DEG C of flue gas exit temperature, oxygen material ratio 200Nm3/ t, charging rate 13t/h, -10~-20Pa of furnace roof negative pressure carry out charging work
Industry stops charging after the 80min that feeds, anthracite grain is added and carries out heating operation 30min, furnace roof flue gas exit temperature rises to 950
After DEG C, stops that anthracite grain is added, carry out deslagging operation, output liquid lead antimony oxidizing slag enters reduction melting by chute.
(4) ash-laden gas recycles: through detecting, SO in the ash-laden gas of oxygen-rich oxide furnace charging phase output2Flue gas concentration reaches
10% or more, the dust rate of oxygen-rich oxide furnace output is 10% or less；Ash-laden gas is through waste heat boiler recovery waste heat, cottrell
It gathers dust, be quenched after dearsenification and bag collection and send sulfuric acid plant relieving haperacidity, the flue dust of waste heat boiler output returns to melting, and cottrell produces
Flue dust out send reverberatory furnace to produce 2# antimony.
In the embodiment of the present invention, the whole flow process of the production technology is all made of the control of DCS control system, entire to improve
The degree of automation of process.
Embodiment 3
A kind of production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting, includes the following steps:
(1) ingredient: jamesonite, middle-low grade antimony ore, quartz sand, lime stone 100:15:3:3 in mass ratio are mixed
Uniformly, mixture is obtained；
(2) it pelletizes: the spherolite that partial size is 15~20mm is made in mixture, the water content of spherolite is 8~10%；
(3) oxidizing semlting: the oxygen-rich oxide furnace that manufactured spherolite is sent into oxygen-enriched air bottom blowing is subjected to oxidizing semlting, presses and adds
Material, heating, deslagging carry out discontinuous running.Firstly, controlling furnace roof to mixture desulfurization, dearsenification using low temperature oxygen-rich oxide technique
750 DEG C of flue gas exit temperature, oxygen material ratio 240Nm3/ t, charging rate 13t/h, -20~-30Pa of furnace roof negative pressure carry out charging work
Industry stops charging after the 75min that feeds, anthracite grain is added and carries out heating operation 25min, furnace roof flue gas exit temperature rises to 900
After DEG C, stops that anthracite grain is added, carry out deslagging operation, output liquid lead antimony oxidizing slag enters reduction melting by chute.
(4) ash-laden gas recycles: through detecting, SO in the ash-laden gas of oxygen-rich oxide furnace charging phase output2Flue gas concentration reaches
10% or more, the dust rate of oxygen-rich oxide furnace output is 10% or less；Ash-laden gas is through waste heat boiler recovery waste heat, cottrell
It gathers dust, be quenched after dearsenification and bag collection and send sulfuric acid plant relieving haperacidity, the flue dust of waste heat boiler output returns to melting, and cottrell produces
Flue dust out send reverberatory furnace to produce 2# antimony.
In the embodiment of the present invention, the whole flow process of the production technology is all made of the control of DCS control system, entire to improve
The degree of automation of process.
Embodiment 4
A kind of production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting, includes the following steps:
(1) ingredient: jamesonite, quartz sand, lime stone 100:8:4 in mass ratio are uniformly mixed, mixture is obtained；
(2) it pelletizes: the spherolite that partial size is 12~15mm is made in mixture, the water content of spherolite is 5~8%；
(3) oxidizing semlting: the oxygen-rich oxide furnace that manufactured spherolite is sent into oxygen-enriched air bottom blowing is subjected to oxidizing semlting, presses and adds
Material, heating, deslagging carry out discontinuous running.Firstly, controlling furnace roof to mixture desulfurization, dearsenification using low temperature oxygen-rich oxide technique
800 DEG C of flue gas exit temperature, oxygen material ratio 220Nm3/ t, charging rate 12t/h, furnace roof -40~-50Pa of exhanst gas outlet negative pressure are carried out
Feed operation, stops charging after the 80min that feeds, and anthracite grain is added and carries out heating operation 25min, furnace roof flue gas exit temperature liter
To after 950 DEG C, anthracite grain is added in stopping, carrying out deslagging operation, and output liquid lead antimony oxidizing slag enters oxygen-enriched go back by chute
Former melting.
(4) ash-laden gas recycles: through detecting, SO in the ash-laden gas of oxygen-rich oxide furnace charging phase output2Flue gas concentration reaches
10% or more, the dust rate of oxygen-rich oxide furnace output is 10% or less；Ash-laden gas is through waste heat boiler recovery waste heat, cottrell
It gathers dust, be quenched after dearsenification and bag collection and send sulfuric acid plant relieving haperacidity, the flue dust of waste heat boiler output returns to melting, and cottrell produces
Flue dust out send reverberatory furnace to produce 2# antimony.
In the embodiment of the present invention, the whole flow process of the production technology is all made of the control of DCS control system, entire to improve
The degree of automation of process.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the patents of the present invention.
Claims (9)
1. a kind of production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting, which comprises the steps of:
(1) ingredient: it will include that lead antimony composite ore, quartz sand, the raw material of lime stone and auxiliary material are uniformly mixed in mass ratio, must mix
Material；
(2) it pelletizes: the spherolite that partial size is 12~20mm is made in mixture, the water content of spherolite is 5~10%；
(3) oxidizing semlting: sending manufactured spherolite into oxygen-rich oxide furnace and carry out oxidizing semlting, carries out week by charging, heating, deslagging
Phase operation；Firstly, using low temperature oxygen-rich oxide technique to mixture desulfurization, dearsenification, control furnace roof flue gas exit temperature 750~
850 DEG C, added according to oxygen material ratio, charging rate and the furnace roof exhanst gas outlet tiny structure that above-mentioned raw materials ingredient and the working of a furnace determine
Expect operation；Secondly, stopping charging after the completion of every furnace charging, carrying out heating operation to oxygen-rich oxide furnace；Then, furnace roof flue gas goes out
After mouth temperature rises to 850 DEG C~950 DEG C, stop heating, carry out deslagging operation, output liquid lead antimony oxidizing slag passes through chute and enters
Reduction melting.
2. the production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting according to claim 1, which is characterized in that
Further include the recycling of step (4) ash-laden gas: the ash-laden gas of oxygen-rich oxide furnace output is through waste heat boiler recovery waste heat, cottrell
It gathers dust, be quenched after dearsenification and bag collection and send sulfuric acid plant relieving haperacidity, the flue dust of waste heat boiler output returns to melting, and cottrell produces
Flue dust out send reverberatory furnace to produce 2# antimony.
3. the production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting according to claim 1, which is characterized in that
The lead antimony composite ore is the lead of 15% or more the leaded mass ratio by representative of jamesonite, 10% or more mass ratio containing antimony
Antimony composite ore.
4. the production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting according to claim 3, which is characterized in that
The mass ratio of the lead antimony composite ore, quartz sand and lime stone is 100:3-10:3-5.
5. the production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting according to claim 1, which is characterized in that
Oxygen-enriched air is blown into mode using bottom blowing mode in the oxygen-rich oxide furnace.
6. the production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting according to claim 4, which is characterized in that
Oxygen material ratio is 200-240Nm in the step (3)3/ t, charging rate 12-14t/h, furnace roof exhanst gas outlet tiny structure are -0.1
~-50Pa, the time of charging are 70-80min, and the time of heating is 20~30min.
7. the production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting according to claim 1, which is characterized in that
SO in the ash-laden gas of output in the oxygen-rich oxide furnace2The concentration of gas is 10% or more.
8. the production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting according to claim 1, which is characterized in that
The dust rate of the oxygen-rich oxide furnace output is 10% or less.
9. the production technology of lead antimony composite ore oxygen enriched molten bath low-temperature oxidation melting according to claim 1, which is characterized in that
The whole flow process of the production technology is all made of the control of DCS control system.
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Cited By (2)
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| CN113237348A (en) * | 2021-04-26 | 2021-08-10 | 太和县大华能源科技有限公司 | Smoke dust conveying and processing system and process flow |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113237348A (en) * | 2021-04-26 | 2021-08-10 | 太和县大华能源科技有限公司 | Smoke dust conveying and processing system and process flow |
| CN117488092A (en) * | 2023-12-29 | 2024-02-02 | 湘潭中创电气有限公司 | Molten pool smelting and flue gas treatment process for antimony-gold concentrate |
| CN117488092B (en) * | 2023-12-29 | 2024-04-02 | 湘潭中创电气有限公司 | Molten pool smelting and flue gas treatment process for antimony-gold concentrate |
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