CN103924101B - Oxygen-enriched side-blowing volatilization bath smelting produces method and the device of thick antimonous oxide - Google Patents

Oxygen-enriched side-blowing volatilization bath smelting produces method and the device of thick antimonous oxide Download PDF

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CN103924101B
CN103924101B CN201410173492.4A CN201410173492A CN103924101B CN 103924101 B CN103924101 B CN 103924101B CN 201410173492 A CN201410173492 A CN 201410173492A CN 103924101 B CN103924101 B CN 103924101B
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antimony
oxygen
enriched
slag
bath smelting
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CN103924101A (en
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戴永俊
邓卫华
廖光荣
高长春
许望桃
李志强
谈应顺
龚福保
刘放云
刘燕庭
曾乐泉
陈正杰
雷红旗
李俊明
杨运清
张继革
宋应球
王卫国
何醒民
戴曦
宋彦坡
吴江华
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TINNERY SHANXING ANTIMONY INDUSTRY LLC
Central South University
Changsha Research Institute of Mining and Metallurgy Co Ltd
CINF Engineering Corp Ltd
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TINNERY SHANXING ANTIMONY INDUSTRY LLC
Central South University
Changsha Research Institute of Mining and Metallurgy Co Ltd
CINF Engineering Corp Ltd
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Abstract

Oxygen-enriched side-blowing volatilization bath smelting produces method and the device of thick antimonous oxide, the method take antimong-containing material as raw material, hard coal or coke or Sweet natural gas or coal gas etc. are postcombustion, iron ore, lime are flux, blast oxygen-rich air, reaction in furnace is entered, output high-temperature flue gas and melt after entering stove material metering; High-temperature flue gas is after condensation is gathered dust, and flue gas send acid making system relieving haperacidity, and condensation gained dust is that thick antimonous oxide product send subsequent processing process; High-temperature fusant is discharged respectively after cupola well sedimentation layering, can directly as waste after furnace slag granulating, and a small amount of antimony sulfonium of output and needle antimony return process, and your antimony send subsequent processing process to carry gold.The present invention also comprises the device that a kind of oxygen-enriched side-blowing volatilization bath smelting produces thick antimonous oxide.The present invention has adaptability to raw material strong, and energy consumption is low, flue gas SO 2concentration is high, can directly relieving haperacidity, and direct yield, the rate of recovery of antimony and precious metal are high, produces clean environment firendly, the advantages such as production cost is low.

Description

Oxygen-enriched side-blowing volatilization bath smelting produces method and the device of thick antimonous oxide
Technical field
The present invention relates to a kind of method and the device of producing thick antimonous oxide, be specifically related to method and device that a kind of oxygen-enriched side-blowing volatilization bath smelting produces thick antimonous oxide.
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 of overwhelming majority antimony smeltery of current China.
Stibium blast furnace volatile smelting technique has that adaptability to raw material is strong, processing power is comparatively large, be easy to mechanically operated advantage, but the special operation condition of " low column, the thin bed of material, high coke yield, High-temperature furnace top " also determines this technique, and to there is energy consumption high, burnt rate 30 ~ 45%, especially tail gas SO 2concentration < 0.5%, serious pollution of ecological environment, particularly the precious metal rate of recovery is low for metal, and return product rate high, direct yield is low.
CN101280368B discloses a kind of stibium blast furnace melting method adopting oxygen-rich air, and the method adopts the oxygen-rich air of 25 ~ 48% to smelt antimony ore or antimong-containing material, but tail gas SO 2concentration < 1.1%, still needs desulfurization process, is difficult to realize that Sulphur ressource is efficient, low cost utilizes, and still there is environmental risk.Stibium blast furnace oxygen enrichment volatile smelting technique comparatively oxygen deprivation blast furnace mainly bed ability significantly improve, coke consumption significantly reduces, but coke consumption is still higher, reaches 25%; The rate of recovery of stibium blast furnace oxygen enrichment volatile smelting technique gold and silver is 90%.
CN101942575B discloses a kind of production method and device thereof of continuous antimony smelting by bottom blowing bath smelting of stibnite, handled material is only for white antimony (antimony sulfide), the operational path adopted is white antimony bottom blowing oxidation bath smelting, stove antimony content in slag is high, and slag must can be less than 1% through heating external crucible clarified separation.
CN101768672A discloses a kind of top-blown bath antimony smelting method and bath smelting furnace thereof, and adopt top-blown bath smelting technique, but unit surface treatment capacity is 32 ~ 38t/ ㎡ d, bed ability is low; Antimony content in slag is high, reaches 1.2 ~ 1.8%.
CN103173637A discloses a kind of stibnite concentrate oxygen enriched molten bath melting method and side-blown converter, and the method is only for stibnite concentrate, and process raw material is single, and raw material needs to granulate; Product is metallic antimony, but direct yield is low, only has 10 ~ 25%, and metallic antimony foreign matter content is high-leveled and difficult with process; Slag adopts high scum, and flux consumes high, and slag rate is high, and the rate of recovery is low; The oxygen enrichment pressure needed is high, up to 1.6MPa, is difficult to realize industrialization.
CN103173636A discloses the method for a kind of stibnite concentrate oxygen enriched molten bath melting, and the method process raw material is only for stibnite concentrate, and process raw material is single, and raw material needs to granulate; Product disperses, and treatment scheme is long; Stove antimony content in slag productive rate, up to 30 ~ 40%, containing antimony percentage composition up to 30%, must carry out secondary treatment to reclaim antimony metal; Slag adopts high scum, and flux consumes high, and slag rate is high, and the rate of recovery is low; Auri in raw material originally enters slag, and gold recovering long flow path, efficiency are low, is difficult to realize industrialization.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of oxygen-enriched side-blowing volatilization bath smelting to produce method and the device of thick antimonous oxide, to overcome, the energy consumption existed in existing antimony smelting technology is high, output low concentration SO 2, Sulphur ressource is difficult to recycle, shortcoming that metal recovery rate is low.
The technical solution adopted for the present invention to solve the technical problems is:
The oxygen-enriched side-blowing volatilization bath smelting of the present invention produces the method for thick antimonous oxide, by antimong-containing material, hard coal, iron ore, lime is the ratio of 100:8 ~ 20:10 ~ 35:8 ~ 15 according to mass ratio, after being measured by corresponding measuring belt by each feed bin, by transporting the belted electronic balance of Belt Conveying to furnace roof, be metered to after stove material gross weight through belted electronic balance, drop in oxygen-enriched side-blowing volatilization bath smelting furnace through charging opening, melt in stove, dissociation, desulfurization, oxidation, volatilization and slag making reaction, in-furnace temperature controls at 1100 ~ 1350 DEG C, pool depth is 1100 ~ 2500mm, entering in stove material melting and reaction process, 25 ~ 95%(V/V is blasted to slag blanket from oxygen-enriched side-blowing volatilization bath smelting furnace sidepiece) oxygen-rich air of (preferably 50 ~ 80%), the pressure-controlling of oxygen-rich air is at 0.05 ~ 0.15MPa, the flow velocity of oxygen-rich air is 150 ~ 230m/s, the oxygen-rich air violent stirring high-temperature fusant blasted also participates in reaction, greatly optimize gas-liquid-solid reaction conditions, the carrying out of various reaction in strengthening stove, output high-temperature high concentration is containing antimony flue gas and high-temperature fusant, antimony more than 95% enters flue gas, high-temperature fusant AUTOMATIC ZONING, upper strata is slag, middle level is antimony sulfonium, bottom is needle antimony or your antimony (gold and silver entered in stove material is enriched in needle antimony to form your antimony), slag is released by slag siphon room, stove antimony content in slag 0.2 ~ 0.7%, antimony sulfonium, needle antimony or your antimony are released by antimony sulfonium siphon room, a small amount of antimony enters antimony sulfonium, needle antimony or your antimony, your antimony gold more than 97% enters, the high-temperature high concentration of gained contains antimony flue gas when by furnace roof, by the further oxidation sweetening of secondary air that secondary tuyere is sent into, then the vertical uplift flue of furnace roof is entered, after flue gas is lowered the temperature by waste heat boiler, after electric dust arrester installation and the sedimentation of bag collection device are collected, obtain thick antimonous oxide product, the flue gas after bag collection device send acid making system relieving haperacidity.
Further, described antimong-containing material can be containing the antimony-containing mineral such as stibnite concentrate, sulphur oxygen mixing antimony concentrate, weisspiessglanz concentrate, jamesonite, Sb-Au ore, shahovite of antimony > 10% with containing antimony slag, containing synthetical recovery antimong-containing materials such as antimony flue dust; Described iron ore can be sulfurous iron ore, rhombohedral iron ore; Described lime can substitute with Wingdale; Described hard coal can use coke, Sweet natural gas, coal gas etc. to substitute; Entering stove material can be fine ore, grain ore deposit, lump ore.
Further, the slag of gained controlling depth in oxygen-enriched side-blowing volatilization bath smelting furnace, at 400 ~ 1500mm, is discharged by slag siphon room.Stove antimony content in slag 0.2 ~ 0.7%, can directly as waste, or clarified separation further, to obtain lower antimony content in slag, improves metal recovery rate.
Further, the antimony sulfonium of gained, needle antimony or your antimony controlling depth in oxygen-enriched side-blowing volatilization bath smelting furnace is less than 400mm, and wherein needle antimony or your antimony degree of depth are less than 200mm, discharged, return process after fragmentation by antimony sulfonium siphon room; Your antimony send is proposed the process of metal working sequence.
Further, enter stove material (comprising antimong-containing material, hard coal, iron ore, lime) integrated silicon hydrochlorate gangue content and meet following ratio: SiO 2: FeO:CaO=1:0.5 ~ 0.9:0.3 ~ 0.7.
The oxygen-enriched side-blowing volatilization bath smelting of the present invention produces the device of thick antimonous oxide, comprise feed bin, measuring belt, transhipment belt, belted electronic balance, oxygen-enriched side-blowing volatilization bath smelting furnace, vertical uplift flue, electricity dust arrester installation and bag collection device, described oxygen-enriched side-blowing volatilization bath smelting furnace comprises by copper water jacket, the shaft that molten steel cover surrounds, the copper water jacket both sides of described restoration of lower stack are provided with horizontal positioned and the oxygen-rich air spray gun that flushes with water jacket inwall of muzzle, the molten steel of described upper shaft puts and is provided with secondary tuyere, the below of described shaft is provided with the cupola well of laying fireproof bricks, the front of described cupola well is provided with antimony sulfonium siphon room, the rear of described cupola well is provided with slag siphon room, the top of described shaft is provided with charging opening, the top of described shaft is connected with vertical uplift flue, waste heat boiler is provided with in described vertical uplift flue, described vertical uplift flue is connected with electric dust arrester installation, described electric dust arrester installation is connected with bag collection device, described bag collection device is meet entrance flue gas temperature to be greater than 200 DEG C of bag collection devices required, described belted electronic balance is positioned at above charging opening, described transhipment belt is positioned at above belted electronic balance, described measuring belt is positioned at above transhipment belt, described feed bin is positioned at above measuring belt.
The oxygen-enriched side-blowing volatilization bath smelting of the present invention is produced in the method for thick antimonous oxide, and the principal reaction equation related to has:
2Sb 2S 3+9O 2=2Sb 2O 3+6SO 2
CaCO 3=CaO+CO 2
MgCO 3=MgO+CO 2
FeS 2=FeS+S
4FeAsS=4FeS+4As
2FeS+3O2=2FeO+2SO 2
S+O 2=SO 2
C+O 2=CO 2
2C+O2=2CO
2CO+O 2=2CO 2
Sb 2S 3+2Sb 2O 3=6Sb+3SO 2
Sb 2S 3+9Sb 2O 4=10Sb 2O 3+3SO 2
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
FeS+Fe 3O 4=FeO+SO 2
2FeO+SiO 2=2FeO·SiO 2
2CaO+SiO 2=2CaO·SiO 2
3Fe 3O 4+FeS+5SiO 2=5(2FeO·SiO 2)+SO 2
Antimong-containing material of the present invention realizes volatile smelting in oxygen-enriched side-blown bath smelting, and antimony more than 95% enters high-temperature flue gas, obtains qualified thick antimonous oxide product in condensation dust collecting system; Slag can directly as waste, and the needle antimony of output minute quantity and antimony sulfonium, return process; Enter the concentration of precious metal such as the gold and silver in stove material in needle antimony, become your antimony.
Compared with prior art, the present invention has the following advantages:
(1) adopt oxygen-enriched side-blowing volatilization bath smelting process antimong-containing material, greatly reduce into stove air capacity, improve SO in flue gas 2(come out of the stove concentration high-temperature flue gas SO 2concentration be 8 ~ 30%), SO in waste gas 2concentration can reach the requirement of double conversion and double absorption relieving haperacidity, has not only reclaimed Sulphur ressource, and has eliminated low concentration SO 2to the harm of environment;
(2) adopt oxygen-enriched side-blowing volatilization bath smelting process antimong-containing material, energy consumption reduces, and substitutes expensive metallurgical coke with common hard coal, and antimony concentrate, without the need to pressure group, dry, is got the raw materials ready simple;
(3) adopt oxygen-enriched side-blowing volatilization bath smelting process antimong-containing material, antimony more than 95% enters flue gas, only the antimony sulfonium of output minute quantity and needle antimony or your antimony; Output stove antimony content in slag 0.2 ~ 0.7%, can not arrange heating external crucible and carry out post-defecation separation, directly as waste; Antimony direct yield is greater than 90%, and the rate of recovery is greater than 97.5%; Gold and silver concentration of precious metal in feed stock for blast furnace is in your antimony, and the rate of recovery of gold is greater than 97%, and resource recycling rate is high;
(4) in oxygen-enriched side-blowing volatilization bath smelting process antimong-containing material process, adopt the slag type of high silicon and low iron, decrease the quantity of slag, improve the rate of recovery, reduce supplies consumption and energy consumption;
(5) oxygen-enriched side-blowing volatilization bath smelting furnace converter life is long.
In sum, environment Social benefit and economic benefit of the present invention is remarkable.
Accompanying drawing explanation
Fig. 1 is that the oxygen-enriched side-blowing volatilization bath smelting of the present invention produces the structural representation of the device of thick antimonous oxide.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1
The oxygen-enriched side-blowing volatilization bath smelting of the present embodiment produces the method for thick antimonous oxide, comprises the following steps:
(1) be the ratio of 100:17:22:10 by antimong-containing material, hard coal, iron ore, lime according to mass ratio, after being measured by corresponding measuring belt 2 by each feed bin 1, the belted electronic balance 4 of furnace roof is delivered to by transhipment belt 3, after belted electronic balance 4 is metered to stove material gross weight, drop in oxygen-enriched side-blowing volatilization bath smelting furnace through charging opening 5, the area of oxygen-enriched side-blowing volatilization bath smelting furnace is 2.16m 2(1.2 × 1.8m), enter stove material to melt in stove, dissociation, desulfurization, oxidation, volatilization and slag making reaction, in-furnace temperature controls at 1150 ~ 1250 DEG C, pool depth is 1800 ~ 2100mm, entering in stove material melting and reaction process, blast 75%(V/V from oxygen-enriched side-blowing volatilization bath smelting furnace sidepiece to slag blanket) oxygen-rich air, oxygen-rich air pressure-controlling is at 0.12 ~ 0.15MPa, the flow velocity of oxygen-rich air is 220m/s, the oxygen-rich air violent stirring high-temperature fusant blasted also participates in oxidation, slag making is reacted, output high-temperature high concentration is containing antimony flue gas and high-temperature fusant, antimony 95% enters flue gas, high-temperature fusant AUTOMATIC ZONING, upper strata is slag, middle level is antimony sulfonium, bottom is your antimony (gold and silver entered in stove material is enriched in needle antimony to form your antimony), slag is discharged by slag siphon room 9, stove antimony content in slag 0.31%, antimony sulfonium, your antimony melt height controls at 300 ~ 400mm, wherein your antimony height is less than 200mm, released by antimony sulfonium siphon room 7, process is returned after fragmentation, when your antimony containing gold more than 1000g/t after send and propose the process of metal working sequence, gold recovery 97.8%, the high-temperature high concentration of gained is containing antimony flue gas when by furnace roof, and by the further oxidation sweetening of secondary air that secondary tuyere is sent into, come out of the stove high-temperature flue gas SO 2concentration be 13.2%(V/V), then the vertical uplift flue 12 of furnace roof is entered, after flue gas is lowered the temperature by waste heat boiler, after electric dust arrester installation 13 and bag collection device 14 sedimentation are collected, obtain thick antimonous oxide product, reach 81.5% containing antimony, antimony direct yield 93.0%, antimony recovery 98.3%, the flue gas after bag collection device 14 send acid making system relieving haperacidity.
The present embodiment antimong-containing material used is that iron ore is rhombohedral iron ore, and lime is unslaked lime containing golden stibnite concentrate (antimony content 45%, gold content 10g/t); Enter stove material (comprising antimong-containing material, hard coal, iron ore, lime) integrated silicon hydrochlorate gangue content: SiO 2: FeO:CaO=1:0.8:0.5.
With reference to Fig. 1, the oxygen-enriched side-blowing volatilization bath smelting of the present embodiment produces the device of thick antimonous oxide, comprise feed bin 1, measuring belt 2, transhipment belt 3, belted electronic balance 4, oxygen-enriched side-blowing volatilization bath smelting furnace 15, vertical uplift flue 12, electricity dust arrester installation 13 and bag collection device 14, described oxygen-enriched side-blowing volatilization bath smelting furnace 15 comprises by copper water jacket, the shaft 6 that molten steel cover surrounds, the copper water jacket both sides of described shaft 6 bottom are provided with horizontal positioned and the oxygen-rich air spray gun 10 that flushes with water jacket inwall of muzzle, the molten steel on described shaft 6 top puts and is provided with secondary tuyere 11, the below of described shaft 6 is provided with the cupola well 8 of laying fireproof bricks, the front of described cupola well 8 is provided with antimony sulfonium siphon room 7, the rear of described cupola well 8 is provided with slag siphon room 9, the top of described shaft 6 is provided with charging opening 5, the top of described shaft 6 is connected with vertical uplift flue 12, waste heat boiler is provided with in described vertical uplift flue 12, described vertical uplift flue 12 is connected with electric dust arrester installation 13, described electric dust arrester installation 13 is connected with bag collection device 14, described bag collection device 14 is greater than 200 DEG C of bag collection devices required for meeting entrance flue gas temperature, described belted electronic balance 4 is positioned at above charging opening 5, described transhipment belt 3 is positioned at above belted electronic balance 4, described measuring belt 2 is positioned at above transhipment belt 3, described feed bin 1 is positioned at above measuring belt 2.
Embodiment 2
The oxygen-enriched side-blowing volatilization bath smelting of the present embodiment produces the method for thick antimonous oxide, comprises the following steps:
(1) be the ratio of 100:9:24:10 by antimong-containing material, hard coal, iron ore, lime according to mass ratio, after being measured by corresponding measuring belt 2 by each feed bin 1, the belted electronic balance 4 of furnace roof is delivered to by transhipment belt 3, after belted electronic balance 4 is metered to stove material gross weight, drop in oxygen-enriched side-blowing volatilization bath smelting furnace through charging opening 5, the area of oxygen-enriched side-blowing volatilization bath smelting furnace is 2.16m 2(1.2 × 1.8m), enter stove material to melt in stove, dissociation, desulfurization, oxidation, volatilization and slag making reaction, in-furnace temperature controls at 1150 ~ 1300 DEG C, pool depth is 1700 ~ 1950mm, entering in stove material melting and reaction process, blast 65%(V/V from oxygen-enriched side-blowing volatilization bath smelting furnace sidepiece to slag blanket) oxygen-rich air, the pressure-controlling of oxygen-rich air is at 0.06 ~ 0.1MPa, the flow velocity of oxygen-rich air is 180m/s, the oxygen-rich air violent stirring high-temperature fusant blasted also participates in oxidation, slag making is reacted, output high-temperature high concentration is containing antimony flue gas and high-temperature fusant, antimony 95% enters flue gas, high-temperature fusant AUTOMATIC ZONING, upper strata is slag, middle level is antimony sulfonium, bottom is needle antimony, slag is discharged by slag siphon room 9, stove antimony content in slag 0.6%, antimony sulfonium, needle antimony melt height controls at 300 ~ 400mm, wherein needle antimony height is less than 200mm, released by antimony sulfonium siphon room 7, process is returned after fragmentation, the high-temperature high concentration of gained is containing antimony flue gas when by furnace roof, and by the further oxidation sweetening of secondary air that secondary tuyere is sent into, come out of the stove high-temperature flue gas SO 2concentration be 19%(V/V), then enter the vertical uplift flue 12 of furnace roof, after flue gas is lowered the temperature by waste heat boiler, after electric dust arrester installation 13 and bag collection device 14 sedimentation are collected, obtain thick antimonous oxide product, reach 80.3% containing antimony, antimony direct yield 92.3%, antimony recovery 97.8%, flue gas after bag collection device 14 send acid making system relieving haperacidity.
The present embodiment antimong-containing material used is weisspiessglanz concentrate (antimony content 30%), and iron ore is sulfurous iron ore, and lime is unslaked lime; Enter stove material (comprising antimong-containing material, hard coal, iron ore, lime) integrated silicon hydrochlorate gangue content: SiO 2: FeO:CaO=1:0.9:0.4.
The present embodiment equipment therefor, with embodiment 1, does not repeat them here.
Embodiment 3
The oxygen-enriched side-blowing volatilization bath smelting of the present embodiment produces the method for thick antimonous oxide, comprises the following steps:
(1) be the ratio of 100:11:26:10 by antimong-containing material, hard coal, iron ore, lime according to mass ratio, after being measured by corresponding measuring belt 2 by each feed bin 1, the belted electronic balance 4 of furnace roof is delivered to by transhipment belt 3, after belted electronic balance 4 is metered to stove material gross weight, drop in oxygen-enriched side-blowing volatilization bath smelting furnace through charging opening 5, the area of oxygen-enriched side-blowing volatilization bath smelting furnace is 2.16m 2(1.2 × 1.8m), enter stove material to melt in stove, dissociation, desulfurization, oxidation, volatilization and slag making reaction, in-furnace temperature controls at 1200 ~ 1300 DEG C, pool depth is 1400 ~ 1800mm, entering in stove material melting and reaction process, blast 80%(V/V from oxygen-enriched side-blowing volatilization bath smelting furnace sidepiece to slag blanket) oxygen-rich air, oxygen-rich air pressure-controlling is at 0.05 ~ 0.08MPa, the flow velocity of oxygen-rich air is 175m/s, the oxygen-rich air violent stirring high-temperature fusant blasted also participates in oxidation, slag making is reacted, output high-temperature high concentration is containing antimony flue gas and high-temperature fusant, antimony 95% enters flue gas, high-temperature fusant AUTOMATIC ZONING, upper strata is slag, middle level is antimony sulfonium, bottom is needle antimony, slag is discharged by slag siphon room 9, stove antimony content in slag 0.5%, antimony sulfonium, needle antimony melt height controls at 300 ~ 400mm, wherein needle antimony height is less than 200mm, released by antimony sulfonium siphon room 7, process is returned after fragmentation, the high-temperature high concentration of gained is containing antimony flue gas when by furnace roof, and by the further oxidation sweetening of secondary air that secondary tuyere is sent into, come out of the stove high-temperature flue gas SO 2concentration be 14%(V/V), then enter the vertical uplift flue 12 of furnace roof, after flue gas is lowered the temperature by waste heat boiler, after electric dust arrester installation 13 and bag collection device 14 sedimentation are collected, obtain thick antimonous oxide product, reach 80.9% containing antimony, antimony recovery 90.5%, antimony recovery 97.6%, flue gas after bag collection device 14 send acid making system relieving haperacidity.
The present embodiment antimong-containing material used is sulphur oxygen mixing antimony concentrate (antimony content 20%), and iron ore is sulfurous iron ore, and lime is unslaked lime; Enter stove material (comprising antimong-containing material, hard coal, iron ore, lime) integrated silicon hydrochlorate gangue content: SiO 2: FeO:CaO=1:0.7:0.6.
The present embodiment equipment therefor, with embodiment 1, does not repeat them here.

Claims (5)

1. oxygen-enriched side-blowing volatilization bath smelting produces the method for thick antimonous oxide, it is characterized in that: by antimong-containing material, hard coal, iron ore, lime is the ratio of 100:8 ~ 20:10 ~ 35:8 ~ 15 according to mass ratio, after being measured by corresponding measuring belt by each feed bin, by transporting the belted electronic balance of Belt Conveying to furnace roof, be metered to after stove material gross weight through belted electronic balance, drop in oxygen-enriched side-blowing volatilization bath smelting furnace through charging opening, melt in stove, dissociation, desulfurization, oxidation, volatilization and slag making reaction, in-furnace temperature controls at 1100 ~ 1350 DEG C, pool depth is 1100 ~ 2500mm, entering in stove material melting and reaction process, blast the oxygen-rich air of volume fraction 25 ~ 95% to slag blanket from oxygen-enriched side-blowing volatilization bath smelting furnace sidepiece, the pressure-controlling of oxygen-rich air is at 0.05 ~ 0.15MPa, the flow velocity of oxygen-rich air is 150 ~ 230m/s, the oxygen-rich air violent stirring high-temperature fusant blasted also participates in reaction, greatly optimize gas-liquid-solid reaction conditions, the carrying out of various reaction in strengthening stove, output high-temperature high concentration is containing antimony flue gas and high-temperature fusant, antimony more than 95% enters flue gas, high-temperature fusant AUTOMATIC ZONING, upper strata is slag, middle level is antimony sulfonium, bottom is needle antimony or your antimony, slag is released by slag siphon room, stove antimony content in slag 0.2 ~ 0.7%, antimony sulfonium, needle antimony or your antimony are released by antimony sulfonium siphon room, a small amount of antimony enters antimony sulfonium, needle antimony or your antimony, your antimony gold more than 97% enters, the high-temperature high concentration of gained contains antimony flue gas when by furnace roof, by the further oxidation sweetening of secondary air that secondary tuyere is sent into, then the vertical uplift flue of furnace roof is entered, after flue gas is lowered the temperature by waste heat boiler, after electric dust arrester installation and the sedimentation of bag collection device are collected, obtain thick antimonous oxide product, the flue gas after bag collection device send acid making system relieving haperacidity,
Described antimong-containing material is containing the stibnite concentrate of antimony > 10%, sulphur oxygen mixing antimony concentrate, weisspiessglanz concentrate, jamesonite, Sb-Au ore, shahovite or contains antimony slag, containing antimony flue dust.
2. oxygen-enriched side-blowing volatilization bath smelting according to claim 1 produces the method for thick antimonous oxide, it is characterized in that: described iron ore is sulfurous iron ore or rhombohedral iron ore; Described lime can substitute with Wingdale; Described hard coal can use coke, Sweet natural gas or coal gas to substitute; Entering stove material is fine ore, grain ore deposit or lump ore.
3. oxygen-enriched side-blowing volatilization bath smelting according to claim 1 and 2 produces the method for thick antimonous oxide, it is characterized in that: slag controlling depth in oxygen-enriched side-blowing volatilization bath smelting furnace of gained, at 400 ~ 1500mm, is discharged by slag siphon room.
4. oxygen-enriched side-blowing volatilization bath smelting according to claim 1 and 2 produces the method for thick antimonous oxide, it is characterized in that: antimony sulfonium controlling depth in oxygen-enriched side-blowing volatilization bath smelting furnace of gained is less than 400mm, needle antimony or your antimony degree of depth are less than 200mm, discharged by antimony sulfonium siphon room, after fragmentation, return process; Your antimony send is proposed the process of metal working sequence.
5. oxygen-enriched side-blowing volatilization bath smelting according to claim 1 and 2 produces the method for thick antimonous oxide, it is characterized in that: enter stove material integrated silicon hydrochlorate gangue content and meet following ratio: SiO 2: FeO:CaO=1:0.5 ~ 0.9:0.3 ~ 0.7; Described enter stove material comprise antimong-containing material, hard coal, iron ore, lime.
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