CN103924100B - A kind of method and device producing needle antimony containing weisspiessglanz material bath smelting - Google Patents
A kind of method and device producing needle antimony containing weisspiessglanz material bath smelting Download PDFInfo
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Abstract
A kind of method and device producing needle antimony containing weisspiessglanz material bath smelting, the method of producing needle antimony containing weisspiessglanz material bath smelting of the present invention, to contain weisspiessglanz material for raw material, hard coal or coke or Sweet natural gas or coal gas etc. are reductive agent and fuel, iron ore, lime are flux, blast oxygen-rich air, enter smelting furnace with oxygen-enriched side-blown reducing molten bath after entering stove material metering and react, output needle antimony, slag and flue gas; Needle antimony and slag are discharged respectively after sedimentation layering in stove, and needle antimony send subsequent processing refining, can directly as waste after furnace slag granulating; Flue gas is after condensation is gathered dust, and condensation gained dust returns process, qualified discharge after vent gas treatment.The present invention also comprises the device producing needle antimony containing weisspiessglanz material bath smelting.The present invention is strong to adaptability to raw material, and energy consumption is low, and direct yield, the rate of recovery of antimony metal are high, and production efficiency is high, and labour intensity is low, and produce clean environment firendly, production cost is low, good in economic efficiency.
Description
Technical field
The present invention relates to method and the device of the smelting of a kind of antimony, specifically relate to a kind of method and the device of producing needle antimony containing weisspiessglanz material oxygen-enriched side-blown reducing bath smelting.
Background technology
Antimony metallurgy is divided into pyrogenic process and wet method, and in current antimony metallurgical production, fire metallurgy process has comparative advantage, and reaches more than 95%; And the technical process of " antimony concentrate blast furnace volatile smelting-thick antimonous oxide reduction smelting in reverberatory furnace " is the basic technology that overwhelming majority antimony smeltery of current China adopts.
Though antimony reverberatory furnace has advantage simple to operate, but bubble antimony content in slag rate is high, and metal straight yield is low; Adopt artificial burning coal mode, production efficiency is low, and labour intensity is large, and operating environment is poor; Thermo-efficiency is low, and energy consumption is high; Can not continuous seepage operation, the needs of cleaner production cannot be adapted to, need improvement badly.
Application number be 201210257283.9 Chinese patent application disclose a kind of technique and the device thereof that adopt bottom blowing molten pool retailoring antimony regulus, it adopts bottom blowing molten pool smelting technique, and oxygen is transmitted by the metallic antimony of bottom, enters stove oxygen-rich air pressure high, be greater than 0.4MPa, antimony content in slag is high.
Application number be 201310070397.7 Chinese patent application disclose the method for a kind of stibnite concentrate oxygen enriched molten bath melting, but its retailoring process process raw material is only for the high antimony slag that stibnite concentrate produces, and process raw material is single; Reduction antimony content in slag is up to 2%; Produce in needle antimony containing gold, can not directly refining, must be oxidized and blow into thick antimonous oxide, your remaining antimony gold recovering, thick antimonous oxide continues retailoring and becomes needle antimony can refining, antimony direct yield is low, and (the thick antimonous oxide of prior art is reduced into needle antimony process, the direct yield of antimony is 85%, but your antimony must be blown into thick antimonous oxide by this patent application, thick antimonous oxide restores into needle antimony, many procedures, and direct yield just reduces), production efficiency is low, is difficult to realize industrialization.
Summary of the invention
Technical problem to be solved by this invention is, overcome the energy consumption existed in traditional antimony reduction smelting in reverberatory furnace technique high, metal straight yield is low, production efficiency is low, the shortcomings such as labour intensity is large, operating environment difference, provide a kind of energy consumption lower, metal straight yield is high, method and the device of producing needle antimony containing weisspiessglanz material bath smelting that production efficiency is high.
The technical scheme that the present invention solves the employing of its technical problem is, the method for producing needle antimony containing weisspiessglanz material bath smelting of the present invention, and in oxygen-enriched side-blown bath smelting, realize retailoring containing weisspiessglanz material, antimony more than 99% enters needle antimony; Slag adopts ternary slag, can directly as waste after shrend; Flue gas is after condensation is gathered dust, and condensation gained dust returns process, qualified discharge after vent gas treatment.
The method of needle antimony is produced in the utilization of the present invention containing weisspiessglanz material bath smelting, specifically comprise the following steps:
Drop into containing the material of weisspiessglanz, reductive agent (reductive agent is also fuel), flux iron ore, flux lime continuously in oxygen-enriched side-blown bath smelting according to after the mass ratio metering of 100 ︰ 8 ~ 25 ︰ 3 ~ 12 ︰ 1 ~ 5, material (comprising the material, reductive agent, flux iron ore, flux lime etc. containing weisspiessglanz) the integrated silicon hydrochlorate gangue content entering stove meets following mass ratio, SiO
2︰ FeO ︰ CaO=1 ︰ 0.8 ~ 1.5 ︰ 0.3 ~ 0.8; It is 1000 DEG C ~ 1350 DEG C that in-furnace temperature controls, and pool depth is 1100 ~ 2300mm, and react (fusing, reduction and slag making etc.) in stove; Entering in stove material melting and reaction process, blasting oxygen volume ratio from smelting furnace with oxygen-enriched side-blown reducing molten bath sidepiece to slag blanket is 25% ~ 95%(preferably 40% ~ 60%) oxygen-rich air (the preferred 150-250m/s of air velocity, more preferably 180-230m/s), oxygen-rich air pressure-controlling is at 0.05 ~ 0.12MPa, the oxygen-rich air vigorous stirring high-temperature fusant blasted also participates in reaction, output needle antimony, slag and flue gas; More than antimony 99wt% in raw material enters needle antimony; Needle antimony and slag are in stove after delaminating deposition, and needle antimony and slag are discharged respectively by discharge outlet or siphon room; Described flue gas, by qualified discharge after process, containing weisspiessglanz in the dust of recovery, adds in oxygen-enriched side-blown bath smelting as raw material.
Further, the described material containing weisspiessglanz is thick antimonous oxide, antimony oxide ore or complicated containing antimony flue dust.
Further, described reductive agent (reductive agent is also fuel) is at least one of hard coal, coke, Sweet natural gas, coal gas etc.;
Described enter stove material can be fine ore, grain ore deposit, lump ore.If select fine ore to enter stove, hard coal or coke can be broken for granularity and be less than 2mm, obtain pulverized anthracite or coke powder.Thick antimonous oxide or complicated antimony flue dust, pulverized anthracite or the coke powder available compression air of containing, through Cemented filling, spray in stove from spray gun.
Further, described needle antimony severity control, at 200 ~ 900mm, after being discharged, send subsequent processing by discharge outlet or siphon room---refining procedure process.
Described slag controlling depth in smelting furnace with oxygen-enriched side-blown reducing molten bath is 400 ~ 1300mm, and discharged by slag emission mouth or siphon room, stove antimony content in slag is less than 1wt%, can directly as waste, or further clarified separation, to obtain containing the lower slag of antimony, improve metal recovery rate.
Described flue gas returns process, qualified discharge after vent gas treatment by the dust of gained after waste heat boiler, electric dust collector and bag-type dust collector.
The device producing needle antimony containing weisspiessglanz material oxygen-enriched side-blown reducing bath smelting of the present invention, comprises smelting furnace with oxygen-enriched side-blown reducing molten bath, waste heat boiler, electric dust collector, bag-type dust collector; Described smelting furnace with oxygen-enriched side-blown reducing molten bath comprises the smelting furnace with oxygen-enriched side-blown reducing molten bath shaft surrounded by copper water jacket, molten steel cover, the cupola well of laying fireproof bricks, needle antimony siphon room, slag siphon room; Described smelting furnace with oxygen-enriched side-blown reducing molten bath furnace roof is provided with charging opening, that described smelting furnace with oxygen-enriched side-blown reducing molten bath shaft both sides copper water jacket is provided with level, that top is concordant with water jacket inwall oxygen-rich air spray gun; Described smelting furnace with oxygen-enriched side-blown reducing molten bath shaft both sides or furnace roof are provided with the spray gun for spraying into gas-solid mixture (being slightly oxidized antimony powder, pulverized anthracite, pressurized air etc.); Described spray gun is connected with transhipment belt II by the pipeline that pressure sending type Pneumatic conveying pump is housed, and feed bin II is connected with transhipment belt II by batching metering belt II, and feed bin III is connected with transhipment belt II by batching metering belt III; Feed bin I is communicated with charging opening by batching metering belt I, transhipment belt I, furnace roof belted electronic balance successively; The front end of described smelting furnace with oxygen-enriched side-blown reducing molten bath is provided with needle antimony siphon room, and rear end is provided with slag siphon room, and body of heater two ends are respectively equipped with discharge outlet; Described smelting furnace with oxygen-enriched side-blown reducing molten bath body of heater rear portion is provided with waste heat boiler, electric dust collector, bag-type dust collector successively.
Working process: the pulverulent material of particle diameter < 2mm from feed bin II, measures through batching metering belt II (comprising thick antimonous oxide, complexity containing antimony flue dust or pulverized anthracite, coke powder), or from feed bin III, measure through batching metering belt III, again through transhipment belt II to pressure sending type Pneumatic conveying pump, pressurized air is adopted to be injected into smelting furnace with oxygen-enriched side-blown reducing molten bath in from the gas-solid mixture spray gun being located at body of heater both sides or furnace roof by mixture after pipeline; Granular or the lumpy material (comprising weisspiessglanz material, hard coal and iron ore, lime etc.) of particle diameter >=2mm is from feed bin I, after batching metering belt I measures, through transhipment belt, furnace roof belted electronic balance to top filling mouth, enter smelting furnace with oxygen-enriched side-blown reducing molten bath to react, output needle antimony, slag and flue gas; Needle antimony and slag are in stove after sedimentation layering, and needle antimony is discharged by discharge outlet or needle antimony siphon room, and slag is discharged by discharge outlet or slag siphon room; Flue gas successively by waste heat boiler, electric dust collector, bag-type dust collector, then is discharged.
The present invention is weisspiessglanz containing weisspiessglanz material main component, and all the other are silicate component mainly; The main silicate composition of flux iron ore, lime; Reductive agent, fuel mainly containing fixed carbon or volatile matter (with CH
4be main), the principal reaction equation related to has:
CaCO
3=CaO+CO
2
MgCO
3=MgO+CO
2
C+O
2=CO
2
2C+O2=2CO
2CO+O
2=2CO
2
CH
4+2O
2=CO
2+2H
2O
2Sb
2O
3＋3C=4Sb+3CO
2
Sb
2O
3＋3CO=2Sb+3CO
2
Sb
2O
3＋3C=2Sb+3CO
Sb
2O
4+CO=Sb
2O
3+CO
2
Sb
2O
4+C=Sb
2O
3+CO
2Sb
2O
4+C=2Sb
2O
3+CO
2
2FeO+SiO
2=2FeO·SiO
2
2CaO+SiO
2=2CaO·SiO
2
Beneficial effect of the present invention:
1, the present invention adopts the process of oxygen-enriched side-blown reducing bath smelting containing weisspiessglanz material, and bed ability improves greatly, and be more than 15 times of reverberatory furnace technique, production efficiency is high.
2, the present invention adopts the process of oxygen-enriched side-blown reducing bath smelting containing weisspiessglanz material, adopts SiO
2-FeO-CaO ternary slag, stove antimony content in slag is low, is less than 1wt%, can be used as waste after shrend, and direct yield improves greatly;
3, the present invention is in the process of oxygen-enriched side-blown reducing bath smelting containing weisspiessglanz material, and thermo-efficiency improves greatly, and energy consumption reduces.
The present invention is strong to adaptability to raw material, and energy consumption is low, and direct yield, the rate of recovery of antimony metal are high, and production efficiency is high, and labour intensity is low, and produce clean environment firendly, production cost is low, good in economic efficiency.
Accompanying drawing explanation
Fig. 1 is the oxygen-enriched side-blown reducing bath smelting apparatus structure schematic diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Following examples, only in order to further illustrate the present invention, do not limit content of the present invention.
Embodiment 1
The method of needle antimony is produced in the utilization of the present embodiment containing weisspiessglanz material bath smelting, specifically comprise the following steps:
The present embodiment enters stove material (comprising containing weisspiessglanz material, hard coal, iron ore, lime etc.) integrated silicon hydrochlorate gangue content: SiO
2︰ FeO ︰ CaO=1 ︰ 1.2 ︰ 0.6;
Hard coal is broken for granularity and is less than 2mm, thick antimony sesquioxide powder, hard coal, rhombohedral iron ore, unslaked lime are measured according to the mass ratio of 100 ︰ 20 ︰ 6 ︰ 1; Thick antimony sesquioxide powder is from feed bin II 11, measure through batching metering belt II 13, pulverized anthracite after fragmentation is from feed bin III 12, measure through batching metering belt III 14, all through transhipment belt II 15 to pressure sending type Pneumatic conveying pump 16, pressurized air is adopted to spray into bath smelting furnace in from gas-solid mixture spray gun 21 by mixture after pipeline 17;
After iron ore, lime are measured by batching metering belt I 2 by feed bin I 1 respectively, furnace roof belted electronic balance 4 is delivered to by transhipment belt I 3, drop in oxygen-enriched side-blown bath smelting continuously through charging opening 5 after belted electronic balance 4 measures, the area of antimony smelting furnace with oxygen-enriched side-blown reducing molten bath is 2.16m
2(1.2 × 1.8m), in-furnace temperature controls to be 1150 ± 50 DEG C (in-furnace temperature has fluctuation, cannot be decided to be a point value, and following parameter is same), and pool depth is 1600 ~ 1900mm; Enter stove material to melt in stove, reduce and the reaction such as slag making; Entering in stove material melting and reaction process, blast to slag blanket the oxygen-rich air that oxygen volume ratio is 50% from smelting furnace with oxygen-enriched side-blown reducing molten bath sidepiece, oxygen-rich air pressure-controlling is at 0.09 ~ 0.12MPa, wind speed 200m/s, the oxygen-rich air vigorous stirring high-temperature fusant blasted also participates in reaction, antimony enters needle antimony, output needle antimony, slag and high-temperature flue gas; Needle antimony, slag be sedimentation layering in stove, and slag is on upper strata, and needle antimony is at bottom; Slag is regularly discharged by slag siphon room 9, stove antimony content in slag 0.51%; Metallic antimony height 600mm, is released by needle antimony siphon room 7, send subsequent processing---refining procedure process; Described high-temperature flue gas is by after waste heat boiler 18, electric dust collector 19 and bag-type dust collector 20, and the dust of gained returns as the Feedstock treating containing weisspiessglanz, qualified discharge after vent gas treatment.
The device producing needle antimony containing weisspiessglanz material oxygen-enriched side-blown reducing bath smelting of the present embodiment, comprises smelting furnace with oxygen-enriched side-blown reducing molten bath 22, waste heat boiler 18, electric dust collector 19, bag-type dust collector 20; Described smelting furnace with oxygen-enriched side-blown reducing molten bath 22 comprises the smelting furnace with oxygen-enriched side-blown reducing molten bath shaft 6 surrounded by copper water jacket, molten steel cover, the cupola well 8 of laying fireproof bricks, needle antimony siphon room 7, slag siphon room 9; Described smelting furnace with oxygen-enriched side-blown reducing molten bath 22 furnace roof is provided with charging opening 5, that described smelting furnace with oxygen-enriched side-blown reducing molten bath shaft 6 both sides copper water jacket is provided with level, that top is concordant with water jacket inwall oxygen-rich air spray gun 10; Described smelting furnace with oxygen-enriched side-blown reducing molten bath shaft 6 both sides or furnace roof are provided with the spray gun 21 for spraying into gas-solid mixture (being slightly oxidized antimony powder, pulverized anthracite, pressurized air etc.); Described spray gun 21 is connected with transhipment belt II 15 by the pipeline 17 that pressure sending type Pneumatic conveying pump 16 is housed, and feed bin II 11 is connected with transhipment belt II 15 by batching metering belt II 13, and feed bin III 12 is connected with transhipment belt II 15 by batching metering belt III 14; Feed bin I 1 is communicated with charging opening 5 by batching metering belt I 2, transhipment belt I 3, furnace roof belted electronic balance 4 successively; The front end of described smelting furnace with oxygen-enriched side-blown reducing molten bath 22 is provided with needle antimony siphon room 7, and rear end is provided with slag siphon room 9, and body of heater two ends are respectively equipped with discharge outlet 23; Described smelting furnace with oxygen-enriched side-blown reducing molten bath 22 body of heater rear portion is provided with waste heat boiler 18, electric dust collector 19, bag-type dust collector 20 successively.
Working process: the pulverulent material of particle diameter < 2mm from feed bin II 11, measures through batching metering belt II 13 (comprising thick antimony sesquioxide powder, complexity containing antimony flue dust or pulverized anthracite), or from feed bin III 12, measure through batching metering belt III 14, again through transhipment belt II 15 to pressure sending type Pneumatic conveying pump 16, pressurized air is adopted to be injected into smelting furnace with oxygen-enriched side-blown reducing molten bath 22 in from the gas-solid mixture spray gun 21 being located at body of heater both sides or furnace roof by mixture after pipeline 17; Granular or the lumpy material (comprising weisspiessglanz material, hard coal and iron ore, lime etc.) of particle diameter >=2mm is from feed bin I 1, after batching metering belt I 2 measures, through transhipment belt 3, furnace roof belted electronic balance 4 to top filling mouth 5, enter smelting furnace with oxygen-enriched side-blown reducing molten bath 22 to react, output needle antimony, slag and flue gas; Needle antimony and slag are in stove after sedimentation layering, and needle antimony is discharged by needle antimony siphon room 7, and slag is discharged by slag siphon room 9; Flue gas successively by waste heat boiler 18, electric dust collector 19, bag-type dust collector 20, then is discharged.
The bed ability of existing reverberatory furnace is 0.5 ~ 0.7t/m
2.d, the present embodiment process bed ability is 13t/m
2.d, antimony direct yield 96.2%, the present embodiment process bed ability improves greatly.
Embodiment 2
The method of needle antimony is produced in the utilization of the present embodiment containing weisspiessglanz material bath smelting, identical with embodiment 1 operation steps, difference is:
Material (comprising the material, reductive agent, flux iron ore, flux lime etc. containing weisspiessglanz) the integrated silicon hydrochlorate gangue content that the present embodiment enters stove meets following mass ratio SiO
2︰ FeO ︰ CaO=1 ︰ 1.3 ︰ 0.5.
Drop into continuously in oxygen-enriched side-blown bath smelting through charging opening 5 after antimony oxide ore, hard coal, iron ore, lime are measured by belted electronic balance according to the ratio of 100 ︰ 25 ︰ 12 ︰ 5; In-furnace temperature controls at 1200 DEG C ~ 1300 DEG C, and pool depth is 1500 ~ 1750mm; Described oxygen-rich air oxygen volume ratio is 85%; Oxygen-rich air pressure-controlling at 0.05 ~ 0.08MPa, wind speed 185m/s; Slag is discharged by slag siphon room 9, stove antimony content in slag 0.8%.
Bed ability 12t/m during the present embodiment process
2.d, antimony direct yield 95.8%.
Embodiment 3
The method of needle antimony is produced in the utilization of the present embodiment containing weisspiessglanz material bath smelting, identical with embodiment 1 operation steps, difference is:
Material (comprising the material, reductive agent, flux iron ore, flux lime etc. containing weisspiessglanz) the integrated silicon hydrochlorate gangue content that the present embodiment enters stove meets following mass ratio SiO
2︰ FeO ︰ CaO=1 ︰ 0.8 ︰ 0.8.
Drop into continuously in oxygen-enriched side-blown bath smelting through charging opening 5 after antimony oxide ore, hard coal, iron ore, lime are measured by belted electronic balance according to the ratio of 100 ︰ 12 ︰ 8 ︰ 3; In-furnace temperature controls at 1200 DEG C ~ 1300 DEG C, and pool depth is 1500 ~ 1750mm; Described oxygen-rich air oxygen volume ratio is 35%; Oxygen-rich air pressure-controlling at 0.05 ~ 0.08MPa, wind speed 150m/s; Slag is discharged by slag siphon room 9, stove antimony content in slag 0.8%.
Bed ability 13t/m during the present embodiment process
2.d, antimony direct yield 95.7%.
Claims (17)
1. produce the method for needle antimony containing weisspiessglanz material bath smelting for one kind, it is characterized in that, comprise the following steps: drop into containing the material of weisspiessglanz, reductive agent, flux iron ore, flux lime continuously in oxygen-enriched side-blown bath smelting according to after the mass ratio metering of 100 ︰ 8 ~ 25 ︰ 3 ~ 12 ︰ 1 ~ 5, the material component entering stove meets following mass ratio, SiO
2︰ FeO ︰ CaO=1 ︰ 0.8 ~ 1.5 ︰ 0.3 ~ 0.8; It is 1000 DEG C ~ 1350 DEG C that in-furnace temperature controls, and pool depth is 1100 ~ 2300mm, reacts in stove; Entering in stove material melting and reaction process, blast to slag blanket the oxygen-rich air that oxygen volume ratio is 25% ~ 95% from smelting furnace with oxygen-enriched side-blown reducing molten bath sidepiece, the oxygen-rich air flow velocity blasted is 150-250m/s, oxygen-rich air pressure-controlling is at 0.05 ~ 0.12MPa, the oxygen-rich air vigorous stirring high-temperature fusant blasted also participates in reaction, output needle antimony, slag and flue gas; More than antimony 99wt% in raw material enters needle antimony; Needle antimony and slag are in stove after delaminating deposition, and needle antimony and slag are discharged respectively by discharge outlet or siphon room; Described flue gas, by qualified discharge after process, containing weisspiessglanz in the dust of recovery, adds in oxygen-enriched side-blown bath smelting as raw material.
2. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 1, it is characterized in that, the oxygen-rich air flow velocity blasted is 180-230m/s.
3. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 1 and 2, it is characterized in that, the oxygen-rich air oxygen volume ratio blasted is 40% ~ 60%.
4. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 1 and 2, is characterized in that, the described material containing weisspiessglanz is thick antimonous oxide, antimony oxide ore or complicated containing antimony flue dust.
5. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 3, is characterized in that, the described material containing weisspiessglanz is thick antimonous oxide, antimony oxide ore or complicated containing antimony flue dust.
6. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 1 and 2, it is characterized in that, described reductive agent is at least one in hard coal, coke, Sweet natural gas, coal gas.
7. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 3, it is characterized in that, described reductive agent is at least one in hard coal, coke, Sweet natural gas, coal gas.
8. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 4, it is characterized in that, described reductive agent is at least one in hard coal, coke, Sweet natural gas, coal gas.
9. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 1 and 2, it is characterized in that, described needle antimony severity control is at 200 ~ 900mm.
10. method of producing needle antimony containing weisspiessglanz material bath smelting according to claim 3, it is characterized in that, described needle antimony severity control is at 200 ~ 900mm.
11. methods of producing needle antimony containing weisspiessglanz material bath smelting according to claim 4, it is characterized in that, described needle antimony severity control is at 200 ~ 900mm.
12. methods of producing needle antimony containing weisspiessglanz material bath smelting according to claim 6, it is characterized in that, described needle antimony severity control is at 200 ~ 900mm.
13. methods of producing needle antimony containing weisspiessglanz material bath smelting according to claim 1 and 2, it is characterized in that, described slag controlling depth in smelting furnace with oxygen-enriched side-blown reducing molten bath is 400 ~ 1300mm.
14. methods of producing needle antimony containing weisspiessglanz material bath smelting according to claim 3, it is characterized in that, described slag controlling depth in smelting furnace with oxygen-enriched side-blown reducing molten bath is 400 ~ 1300mm.
15. methods of producing needle antimony containing weisspiessglanz material bath smelting according to claim 4, it is characterized in that, described slag controlling depth in smelting furnace with oxygen-enriched side-blown reducing molten bath is 400 ~ 1300mm.
16. methods of producing needle antimony containing weisspiessglanz material bath smelting according to claim 6, it is characterized in that, described slag controlling depth in smelting furnace with oxygen-enriched side-blown reducing molten bath is 400 ~ 1300mm.
17. methods of producing needle antimony containing weisspiessglanz material bath smelting according to claim 9, it is characterized in that, described slag controlling depth in smelting furnace with oxygen-enriched side-blown reducing molten bath is 400 ~ 1300mm.
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| CN201510649018.9A CN105177314B (en) | 2014-04-28 | 2014-04-28 | A kind of bath smelting of material containing antimony oxide produces the device of needle antimony |
| CN201410173447.9A CN103924100B (en) | 2014-04-28 | 2014-04-28 | A kind of method and device producing needle antimony containing weisspiessglanz material bath smelting |
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| CN104328289B (en) * | 2014-10-10 | 2017-01-18 | 昆明理工大学 | Method for removal of lead and arsenic in crude antimony vacuum refining process |
| CN105603197A (en) * | 2015-12-23 | 2016-05-25 | 河南豫光金铅股份有限公司 | Device and process for directly reducing smelt antimony from antimony slag and antimony ash |
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| CN105714130B (en) * | 2016-04-27 | 2020-12-25 | 中南大学 | Reduction smelting slag and application thereof in crude antimony oxide reduction smelting |
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| CN105177314B (en) | 2017-06-23 |
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