CN86100297A - The submerged combustion stove is handled the method for antimony ore - Google Patents
The submerged combustion stove is handled the method for antimony ore Download PDFInfo
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- CN86100297A CN86100297A CN86100297.0A CN86100297A CN86100297A CN 86100297 A CN86100297 A CN 86100297A CN 86100297 A CN86100297 A CN 86100297A CN 86100297 A CN86100297 A CN 86100297A
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- antimony
- ore
- oxygen
- stove
- slag
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Abstract
The present invention provides a kind of method of handling antimony ore with the submerged combustion stove for non-ferrous metal metallurgy.The characteristics of this method are that equipment configuration is simple, and heat and mass is good, antimony evaporation rate height, and cost is low.Be particularly suitable for handling and contain antimony greater than 10%, the oxygen sulphur mixing ore deposit of sulphur 1～20%.
The evaporation rate of handling antimony ore antimony by the present invention can reach 95～99%, stove antimony content in slag 0.2～0.6%, and antimony oxygen contains antimony 79～81%.The device that the present invention uses mainly is drum type reactor and spray gun.Wherein spray gun is by three Cr
18Ni
9The concentric tube of Ti heat-resistance stainless steel and a jet head sets synthetic.The fuel that adopts is diesel oil or fine coal.
Description
The present invention relates in a kind of non-ferrous metal metallurgy to use the submerged combustion stove and handle 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.
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%, and 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, and 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.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 a steel garden tube, 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.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 device 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 insert port " 8 "; 120～150 millimeters apart from drum type reactor [10] end of the outlets of spray gun [1]; igniting baking drum type reactor [10]; when drum type reactor [10] temperature reaches 1300 ℃; mention spray gun [1]; the melt that electric furnace [4] is inner is put into drum type reactor [10] through bed material import [3], puts into spray gun [1] again, 120 millimeters apart from drum type reactor [10] end of the outlets of spray gun [1]; the melt splash that makes progress; 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 charge door [2]. Beginning adds reducing agent (by Chemical Calculation excessive 2～4%) by charge door " 2 ", volatilizees after 10～20 minutes, from discharge port [13] slagging, but can not discharge, and must stay 200 The melt of～250 millimeters deep is as the initial melt of next cycle, accordingly, and 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 fixation, is convenient to build stove and reinforcing, and liner is magnesia brick [12]. Drum type reactor [10] diameter is 350 millimeters, and effective depth is 1225 millimeters. High ratio with diameter is 3～4. Bosh angle is 65～70 degree. The technical conditions of control are: combustion-supporting gas is the mist of air and oxygen, and pressure is 1.8～2.2 kilograms per centimeter2, the gaseous mixture scale of construction that blasts, namely air quantity is 90～98 meters3/ minute, wherein oxygen concentration is 23～25%. Fuel is diesel oil, and oil pressure is 5～6 kilograms per centimeter2, oil mass is 13～16 l/hs. Rate of feeding be 60～70 kilograms/time, the reduction dosage be 15～25% of antimony ore. Processing temperature is that 1260～1450 ℃ of blast intensities are 58.66 mark rice3/ rice2, divide.
Press the device of Fig. 2 and Fig. 3, oil pipe [1], air inlet pipe [5] and outer tube [7] are Cr18Ni
9Ti heat-resistance stainless steel pipe. Fuel oil is by oil pipe [1], arrive mixing chamber [11] through shower nozzle [10], the mist of air and oxygen arrives mixing chamber [11] by the annular space that consists of between oil pipe [1] and the outer tube [7] through flight [8], in operation, combustion-supporting gas and fuel oil are fully atomized and are mixed at mixing chamber [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 connector [3] play fixation. Threeway [4] connects air inlet pipe [5] and outer tube [7]. Cyclone pipe [6] carrying spinning disk [8]. Fixture [9] connects helix tube [6] and shower nozzle [10].
Press the device of Fig. 4, fine coal pipe [1], air inlet pipe [6] and outer tube [9] are Cr18Ni
9Ti heat-resistance stainless steel pipe. Fine coal arrives mixing chamber [11] by fine coal pipe [1], air (oxygen enrichment) enters mixing chamber [11] by air inlet pipe [6] through helix tube [7], in the operation, air (oxygen enrichment) and fine coal are fully mixed at mixing chamber [11], spray into the melt after-combustion 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 helix tube [7]. Fixture [10] is in order to support helix pipe [7].
Below demonstrate.
Example 1.
Antimony ore composition %:Sb 48.06, pb 0.66, and As 0.19, and S 15.97, and Fe 0.91, SiO
229.53, Al
2O
30.3 CaO 0.75, MgO＜0.5.Granularity-5 millimeter
Flux adopts iron ore and lime.
Components of iron ore %:Fe 63.82, SiO
21.74, Al
2O
30.82 CaO 0.75, MgO 0.103, granularity-5 millimeter.
Lime composition %:CaO 95.00, powdery.
Batching system: 100 kilograms of antimony ores, 27.08 kilograms of iron ores, 15.67 kilograms in lime.
Charge composition %:Sb 33.67 after the batching, S 11.19, SiO
240, FeO 30, and CaO 20, and MgO 0.56, 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 index: 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, A
S0.086 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 (4)
1, application submerged combustion stove processing antimony ore is particularly handled and is contained antimony greater than 10%, and the oxygen sulphur mixing antimony ore of sulphur 1～20% is characterized in that carrying out volatile smelting, output slag and antimony oxygen after antimony ore is gone into stove in the melt that fierceness is stirred.
2, the method for processing antimony ore according to claim 1 is characterized in that said slag is the waste residue that contains antimony 0.2～0.6%.
3, the method for processing antimony ore according to claim 1 and 2 is characterized in that said waste residue is directly to emit the waste residue that abandons from the escape orifice [13] of drum type reactor [10].
4, the method for processing antimony ore according to claim 1 is characterized in that said antimony oxygen is the single weisspiessglanz that contains antimony 79～81%.
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 true CN86100297A (en) | 1987-08-12 |
| CN1006234B 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451188A (en) * | 2014-11-18 | 2015-03-25 | 昆明理工大学 | Method for separating lead and antimony of jamesonite concentrate by virtue of vacuum treatment |
| CN104846215A (en) * | 2014-11-14 | 2015-08-19 | 江西瑞林稀贵金属科技有限公司 | Smelting furnace |
-
1986
- 1986-01-30 CN CN86100297.0A patent/CN1006234B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846215A (en) * | 2014-11-14 | 2015-08-19 | 江西瑞林稀贵金属科技有限公司 | Smelting furnace |
| CN104451188A (en) * | 2014-11-18 | 2015-03-25 | 昆明理工大学 | Method for separating lead and antimony of jamesonite concentrate by virtue of vacuum treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1006234B (en) | 1989-12-27 |
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