CN1006234B - Antimong ore treatment and the equipment - Google Patents
Antimong ore treatment and the equipment Download PDFInfo
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- CN1006234B CN1006234B CN86100297.0A CN86100297A CN1006234B CN 1006234 B CN1006234 B CN 1006234B CN 86100297 A CN86100297 A CN 86100297A CN 1006234 B CN1006234 B CN 1006234B
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- antimony
- spray gun
- ore
- oxygen
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Abstract
The present invention provides a method for treating antimony ore by a submerged combustion furnace for non-ferrous metal smelting, which has the characteristics of simple device, good heat and mass transfer, high volatilization rate of antimony and low cost and is especially suitable for oxygen sulfur mixed ore whose antimony content is more than 10% and sulfur content is from 1 to 20%. The volatilization rate of the antimony of the antimony ore treated by the present invention can reach 95 to 99%, the antimony content of cinder is from 0.2 to 0.6%, and the antimony content of antimony oxide is from 79 to 81%. The device used by the present invention is mainly a drum type reactor and a spray gun, wherein the spray gun is formed by the combination of three Cr18Ni9Ti heat resistant stainless steel concentric tubes and a spray head, and fuel used by the present invention is diesel oil or pulverized coal.
Description
The present invention relates to a kind of processing antimony ore, particularly handle contain antimony greater than 10%, the oxygen sulphur mixing antimony ore of sulphur 1～20%, the volatile smelting method of output slag and antimony oxygen and used equipment thereof.
The method of existing processing antimony ore output antimony oxygen has He Shi oven process, rotary kiln shower roasting method, flash roast and fluidization roasting process.These methods belong to static state more or solid materials dynamically down volatilizees.Because equipment configuration is simple, antimony and compound thereof are volatile, and these methods all are fruitful for handling the different antimony ores that contain the antimony grade.The evaporation rate of antimony can reach 87～97%, but the fusing point of antimony and compound thereof is low, under processing temperature (800～1000 ℃), the calcining clinkering brings difficulty to technology, the antimony content in slag height, metal loss is big, and the weisspiessglanz of output is of poor quality, influence step retailoring down, and the intermediates amount is big, need return processing.In order to address these problems, " non-ferrous metal progress " the 23rd fascicle introduction according to China Nonferrous Metals Industry Corporation's volume, the inferior Wen Tuo smeltery of glass dimension adopts φ 800m/m cyclone furnaces to strengthen volatile smelting, except the direct volatilization of solid materials, also be attended by the melt volatilization, improved process conditions, antimony content in slag is reduced to 0.5～1.5%, the antimony evaporation rate can reach 95.3～96%, the main drawback of this method is that the antimony ore and the flux of stove must be finely ground to below 2 millimeters, material prepares strict, and the device structure complexity requires special refractory materials." non-ferrous metal " that press of China Metallurgical Industry publishes smelted 1984 the 6th phases of part and introduced the volatile smelting that Tin Mine Mining Affairs Bureau's this ancient metallurgical equipment of application blast furnace carries out antimony, i.e. blast furnace volatile smelting method.This method is according to antimony and the volatile feature of compound thereof, utilizes the reducing atmosphere in blast furnace, makes the high oxide of antimony in solid-state or the liquid material be reduced into suboxide (Sb earlier
2O
3), the Sb in the material
2S
3In processing temperature (1200～1300 ℃) directly distillation down, easily be oxidized to Sb simultaneously again
2O
3Volatilization, the metallic antimony that is reduced on a small quantity also forms antimony vapour because of have very big vapour pressure under processing temperature, and all these antimony sulfide and antimony vapour are oxidized to oxide compound under the high temperature on stove top, i.e. flue dust.The evaporation rate of antimony reaches 94.4%(mixing antimony concentrate and contains antimony 28.4%) or the 97.18%(stibnite concentrate, contain antimony 48.45%), stove antimony content in slag 1.19%(mixing antimony concentrate contains antimony 28.4%) or the 1.02%(stibnite concentrate, contain antimony 48,45%).Weisspiessglanz on average contains antimony 80%.But, the main drawback of this method be into the stove material need batch mixing, roll, densification, drying and multiple working procedure such as fixed, consume the high-quality metallurgical coke that accounts for into stove agglomerate weight 40%, metal recovery rate is low, the antimony content in slag height needs configuration external-heat external crucible.Do not have the blast furnace antimony regulus of external-heat external crucible, its antimony content in slag is up to 10%.And join by passage between external-heat external crucible and the blast furnace, this passage is the key position of volatile smelting blast furnace, owing to be subjected to washing away and corrode easily damage of high temperature furnace slag, antimony sulphur and needle antimony, causes blast furnace to be forced to blowing out.The blast furnace volatile smelting is inevitably wanted the output needle antimony in practice, and this is undesirable for handling the antimony ore that does not contain precious metal.
The objective of the invention is to handle antimony ore with a kind of submerged combustion stove of compact construction particularly handles and contains antimony greater than 10%, the oxygen sulphur mixing antimony ore output slag and the antimony oxygen of sulphur 1～20%, it can strengthen the volatile smelting process, improve heat and mass efficient, save energy is improved environment, reduce antimony content in slag and reach 0.2～0.6%, the evaporation rate that improves antimony reaches 95～99%, improves antimony oxygen quality, makes the antimony oxygen of output contain antimony and reaches 79～81%.
Main points of the present invention are the drum type reactors that manufacture and design a φ 350m/m, the shell of this reactor is the steel cylinder, be divided into three sections, above two sections be water jacket, below one section be box hat, the two-layer magnesia brick of interior block, and two escape orifices are set, top is provided with charging opening and floss hole, and the top is provided with gun hole and peephole.Adorn a spray gun in reactor, this spray gun is by three Cr
18Ni
9The concentric tube that Ti heat-resistance stainless steel pipe is made and a shower nozzle constitute, and dispose one 55 kilowatts change ore deposit electric furnace and one 3 meters in addition
3/ minute air compressor and two tablecloth bag collector (15m
2).
The fuel that the present invention adopts is diesel oil or fine coal, and the ignition dope of employing is the mixed gas of air or air and oxygen.
When burning in the spray gun insertion reaction device melt bed material, reactor temperature can reach 1300～1400 ℃, because the impact of the combustion-supporting gas that blasts (because the swirl velocity of combustion-supporting gas can reach 170～340 meter per seconds), melt moment is by being sparging into splash, free-falling again, form a fierce ebullient molten bath, after furnace charge adds from reactor top at once by the submergence of splash drop, inside reactor is liquid-solid-and the gas three-phase fully contacts, for heat and mass has been created very advantageous conditions, improve heat and mass efficient, impelled the thermodynamics and kinetics factor of reaction to reach comparatively ideal state, strengthened fusion process.Because the fusing point of metallic antimony is 630 ℃, 1380 ℃ of boiling points; Sb
2S
3Fusing point be 550 ℃, 1080～1090 ℃ of boiling points, 380 ℃ begin the volatilization; Sb
2O
5Fusing point be 380 ℃, 930 ℃ of boiling points, at high temperature unstable, easily resolve into suboxide; Sb
2O
4Fusing point be 930 ℃, easily and Sb
2O
3Reaction generates metallic antimony; Sb
2O
3Fusing point be 656 ℃, boiling point is 1570 ℃, 650 ℃ begin the volatilization; In view of the above, antimony and all cpds thereof have higher vapour pressure in reactor, and easily volatilization almost all is oxide compound and enters bagroom and be captured.Output contains the antimony oxygen of antimony 79～81%.Remaining melt is a slag, do not need special configuration external-heat external crucible sink sorting from, the stove antimony content in slag can reach 0.2～0.6%, becomes waste residue and is directly emitted by escape orifice and discard.
Adopt submerged combustion stove volatile smelting antimony ore can reach following index:
0.62～0.69 ton/meter of submerged combustion stove unit volatile smelting speed
3The time
Submerged combustion stove volatile smelting antimony evaporation rate 95～99%
Submerged combustion stove volatile smelting antimony content in slag 0.2～0.6%
Submerged combustion stove volatile smelting antimony oxygen contains antimony 79～81%
Calculate less than 7% metallurgy and show to go into stove antimony ore sulfur-bearing, when adopting diesel oil or fine coal to make fuel, SO in the flue gas
2Concentration is 150 milligrams/mark rice
3, can reach emission standard.When the material sulfur-bearing greater than 7% the time, can adjust batching system and combustion-supporting dosage, make SO
2Concentration reaches the requirement of relieving haperacidity greater than 4%.
Antimony regulus method of the present invention, equipment configuration is simple, and is removable, operation easily, the evaporation rate height of antimony, it is low to abandon antimony content in slag, strong to the adaptability of material, can save the energy, improves environment, helps reducing cost.
Fig. 1 connects figure for the device of invention.
Fig. 2 is oily spray gun structure figure.
Fig. 3 is nozzle structure figure
Fig. 4 is fine coal spray gun structure figure.
Describe the details of operational circumstances of the present invention and device in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4.
Press the device of Fig. 1, electric furnace (4) starting the arc material (also can adopt other deviceization material) is for drum type reactor (10) is prepared initial melt, i.e. drum type reactor bed material.
Simultaneously; spray gun (1) inserts drum type reactor (10) through inserting mouthful (8); 120～150 millimeters of the outlets of spray gun (1) apart from drum type reactor (10) end; igniting baking drum type reactor (10); when drum type reactor (10) temperature reaches 1300 ℃; mention spray gun (1); the melt of electric furnace (4) lining is put into drum type reactor (10) through bed material import (3); put down spray gun (1) again, 120 millimeters of the outlets of spray gun (1), the melt splash that makes progress apart from drum type reactor (10) end; because the cooling effect of air; the surface of spray gun (1) is dross at once, forms protective layer, after spray gun (1) normal operation; beginning is fed intake to drum type reactor (10) by charging opening (2); beginning adds reductive agent (by stoichiometric calculation excessive 2～4%) by charging opening (2), volatilizees after 10～20 minutes, from escape orifice (13) slagging; but can not put; must stay the initial melt of the melt of 200～250 millimeters deep as next cycle, in view of the above, cycle operation.After furnace charge dropped into drum type reactor (10), antimony and compound thereof just began volatilization, and volatile matter enters bagroom (5) through floss hole (6), in operation, observed situation in the stove by peephole (7).Water jacket (9) is convenient to dross and cleaning, and box hat (11) plays fixed action, is convenient to build stove and reinforcing, and liner is magnesia brick (12).Drum type reactor (10) diameter is 350 millimeters, and virtual height is 1225 millimeters.High ratio with diameter is 3～4, and bosh angle is 65～70 degree, and the technical qualification of control are: combustion-supporting gas is the mixed gas of air and oxygen, and pressure is 1.8～2.2 kilograms per centimeter
2, the gas mixture scale of construction that blasts, promptly air quantity is 90～98 meters
3/ minute, wherein oxygen concn is 23～25%.Fuel is diesel oil, and oil pressure is 5～6 kilograms per centimeter
2, oil mass be 13～16 liters/time.Rate of feeding be 60～70 kilograms/time, reduction dosage is 15～25% of antimony ore, processing temperature is that 1260～1450 ℃ of blast intensities are 58.66 mark rice
3/ rice
2, divide.
Press the device of Fig. 2 and Fig. 3, oil pipe (1), inlet pipe (5) and outer tube (7) are Cr
18Ni
9Ti heat-resistance stainless steel pipe.Oil fuel is by oil pipe (1), arrive mixing section (11) through shower nozzle (10), the mixed gas of air and oxygen arrives mixing section (11) by the annular space that constitutes between oil pipe (1) and the outer tube (7) through flight (8), in operation, combustion-supporting gas and oil fuel are fully atomized and are mixed at mixing section (11), swirl velocity with 238 meter per seconds sprays into melt then, make the melt splash that makes progress, again with droplets fall, melt is vigorous exercise up and down, thereby improved heat and mass efficient, strengthened the volatile smelting process.Plug (2) and connecting joint (3) play fixed action.Threeway (4) connects inlet pipe (5) and outer tube (7).Cyclone pipe (6) carrying spinning disk (8).Mounting block (9) connects spiral tube (6) and shower nozzle (10).
Press the device of Fig. 4, fine coal pipe (1), inlet pipe (6) and outer tube (9) are Cr
18Ni
9Ti heat-resistance stainless steel pipe.Fine coal arrives mixing section (11) by fine coal pipe (1), air (oxygen enrichment) enters mixing section (11) by inlet pipe (6) through spiral tube (7), in the operation, air (oxygen enrichment) and fine coal obtain thorough mixing at mixing section (11), spray into the melt afterfire with the swirl velocity of 238 meter per seconds, simultaneously, make the melt splash that makes progress, again with droplets fall, melt is vigorous exercise up and down, thereby improve heat and mass efficient, strengthened the volatile smelting process.Plug (2) is in order to compress filler (3), and filler (3) is in order to sealing.Intervalve (8) is in order to separate spiral tube (7) mounting block (10) in order to support helix pipe (7).
Below demonstrate.
Example 1.
Antimony ore composition %:Sb48.06, pb0.66, As0.19, S15.97, Fe0.91, SiO
229.53, Al
2O
30.3, CaO0.75, MgO＜0.5.Granularity-5 millimeter
Flux adopts iron ore and lime.
Components of iron ore %:Fe63.82, SiO
21.74, Al
2O
30.82, CaO0.75, MgO0.103, granularity-5 millimeter.
Lime composition %:CaO95.00, powdery.
Batching system: 100 kilograms of antimony ores, 27.08 kilograms of iron ores, 15.67 kilograms in lime.
Charge composition %:Sb33.67 after the batching, S11.19, SiO
240, FeO30, CaO20, MgO0.56, Al
2O
30.41.
Operational condition: 1360 ℃ of reactor storing temperatures, advance 75 kilograms of the bed material amounts of reactor, 1260～1450 ℃ of processing temperatures, blast intensity 58.66 mark rice
3/ rice
2, divide, 16.37 liters of oil consumption/time.
Obtain indication: stove antimony content in slag 0.2～0.5%, slag rate 55.6%, antimony oxygen contains antimony 81.00%.The melting evaporation rate 97～99% of antimony.
Example 2.
Antimony ore composition %:Sb19.87, pb0.02, As0.086, S2.60, Fe1.53, SiO
261.25, Al
2O
31.29, CaO3.96, MgO0.26, granularity-3 millimeter.
Flux adopts iron ore and lime.
Components of iron ore %:Fe63.82, SiO
21.74, Al
2O
30.82, CaO0.57, MgO0.103, granularity-5 millimeter.
Lime composition %:CaO95.00, powdery.
Batching system: 100 kilograms of antimony ores, 45.67 kilograms of iron ores, 35 kilograms in lime.
Charge composition %:Sb10.95 after the batching, S1.48, SiO
240, FeO25, CaO25, MgO0.33, Al
2O
31.85.
Operational condition: 1320 ℃ of reactor storing temperatures, 75 kilograms of bed material amounts that enter reactor, 1340～1390 ℃ of processing temperatures, blast intensity 58.66 mark rice
3/ rice
2, divide, 15.67 liters of oil consumption/time.
Obtain index: stove antimony content in slag 0.48～0.59%, slag rate 87.6%, antimony oxygen contains antimony 79.75%, the melting evaporation rate 95% of antimony.
Claims (5)
1, a kind of method of handling antimony ore, it is characterized in that antimony ore is added the drum type reactor (10) that has initial melt by charging opening (2), fuel and ignition dope spray into melt by spray gun (1) with the swirl velocity of 238 meter per seconds, the control processing temperature is 1260～1450 ℃, and blast intensity is 58.66 mark rice
3/ rice
2Divide, the antimony oxygen of output enters bagroom (5) by floss hole (6) and is captured, and the slag of output is directly emitted by escape orifice (13) and discarded.
2, method according to claim 1 is characterized in that said fuel is diesel oil or fine coal.
3, method according to claim 1 is characterized in that said ignition dope is the mixed gas of air or air and oxygen.
4, be used for the described method of claim 1 and the submerged combustion stove that designs comprises by two sections water jackets (9), one section box hat (11) and interior magnesia brick lining (12) thereof, two escape orifices (13), charging opening (2), floss hole (6), spray gun and inserts drum type reactor (10) and the spray gun (1) that mouthful (8), peephole (7) are formed.
5, submerged combustion stove according to claim 4 is characterized in that said spray gun (1) is by three Cr
18Ni
9The concentric tube that Ti heat-resistance stainless steel pipe is made and a nozzle constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100297.0A CN1006234B (en) | 1986-01-30 | 1986-01-30 | Antimong ore treatment and the equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100297.0A CN1006234B (en) | 1986-01-30 | 1986-01-30 | Antimong ore treatment and the equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86100297A CN86100297A (en) | 1987-08-12 |
| CN1006234B true CN1006234B (en) | 1989-12-27 |
Family
ID=4800954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86100297.0A Expired CN1006234B (en) | 1986-01-30 | 1986-01-30 | Antimong ore treatment and the equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1006234B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846215B (en) * | 2014-11-14 | 2017-09-29 | 江西瑞林稀贵金属科技有限公司 | Smelting furnace |
| CN104451188B (en) * | 2014-11-18 | 2018-03-06 | 昆明理工大学 | A kind of method of application of vacuum jamesonite separation lead antimony |
-
1986
- 1986-01-30 CN CN86100297.0A patent/CN1006234B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN86100297A (en) | 1987-08-12 |
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