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WO2015196889A1 - Appareil de fusion d'étain par soufflage latéral - Google Patents

Appareil de fusion d'étain par soufflage latéral Download PDF

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Publication number
WO2015196889A1
WO2015196889A1 PCT/CN2015/079923 CN2015079923W WO2015196889A1 WO 2015196889 A1 WO2015196889 A1 WO 2015196889A1 CN 2015079923 W CN2015079923 W CN 2015079923W WO 2015196889 A1 WO2015196889 A1 WO 2015196889A1
Authority
WO
WIPO (PCT)
Prior art keywords
tin
furnace
furnace chamber
smelting
slag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/079923
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English (en)
Chinese (zh)
Inventor
李东波
黎敏
王忠实
张振民
胡丕成
许良
冯双杰
姚霞
曹珂菲
邓兆磊
陈学刚
陈霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China ENFI Engineering Corp
Original Assignee
China ENFI Engineering Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201420348146.0U external-priority patent/CN203960304U/zh
Priority claimed from CN201410293171.8A external-priority patent/CN104073652A/zh
Application filed by China ENFI Engineering Corp filed Critical China ENFI Engineering Corp
Publication of WO2015196889A1 publication Critical patent/WO2015196889A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B25/00—Obtaining tin
    • C22B25/02—Obtaining tin by dry processes

Definitions

  • the invention relates to a side blowing tinning device.
  • the technology of tin refining includes tin concentrate reverberation furnace smelting process, electric furnace smelting process, Ausmelt smelting process, blast furnace smelting process, short kiln smelting process, and Caldo furnace smelting process.
  • the short kiln smelting process has been eliminated due to high investment, management and maintenance costs, large amount of flue gas, and low direct yield.
  • the structure of the Caldo furnace is complicated, the maintenance cost is high, the furnace life is short, and the refractory material is consumed.
  • Reverberatory furnaces are rapidly being replaced by enhanced smelting methods due to their low production efficiency, low thermal efficiency, high fuel consumption, and high labor intensity.
  • an object of the present invention is to provide a side-blowing tin-smelting device having the advantages of low energy consumption, good sealing performance, high environmental protection, simple structure, and easy operation.
  • a side-blowing tin-smelting apparatus includes: a reaction furnace having a furnace chamber therein, and a wall of the furnace chamber is provided with a feeding port, a slag discharge port, and a tin-discharging port, wherein the furnace cavity
  • the top wall is provided with a smoke outlet for discharging the flue gas; and a side blowing spray gun is disposed on the side wall of the furnace chamber to blow the oxygen-containing gas and the fuel side into the furnace chamber.
  • the side-blown tin-smelting device can realize reduction smelting, strong reduction smelting, and vulcanization volatilization in a single side blowing tin-smelting device, that is, blowing tin in a single closed side-blown tin-smelting device,
  • a single side blowing tin-smelting device that is, blowing tin in a single closed side-blown tin-smelting device
  • the side-blowing tin-smelting device has the advantages of low energy consumption, good sealing performance, high environmental protection, simple structure, and easy operation.
  • side-blowing tin-smelting apparatus may further have the following additional technical features:
  • the feeding port is disposed on a sidewall of the cavity, and the tin-discharging port is disposed in the On the side wall of the furnace chamber, the slag discharge port is provided on a side wall of the furnace chamber.
  • the tin-discharging opening is located at a first end of the furnace chamber
  • the slag opening is located at a second end of the furnace chamber, wherein the first end of the furnace chamber is The second end of the furnace chamber is opposite.
  • the tuyere has a third tuyeres on the side wall.
  • a spray gun port is provided on a side wall of the furnace chamber, and the side blow gun is disposed in the spray gun port.
  • the reaction furnace is a horizontal furnace.
  • the side blowing lances are plurality, and a plurality of the side blowing lances are spaced apart from each other along a length direction of the reaction furnace on a side wall of the furnace chamber.
  • the feeding port, the tin-discharging port and the slag discharging port are provided with a sanitary ventilating chamber and a dust removing system.
  • the side blowing tinning apparatus further includes a waste heat boiler having a vertical ascending section integrally formed with the reaction furnace and connected to the outlet.
  • a waste heat boiler having a vertical ascending section integrally formed with the reaction furnace and connected to the outlet.
  • the side blowing tinning apparatus further comprises a dust collector, the dust collector being connected to the waste heat boiler.
  • FIG. 1 is a flow chart of a side blowing tinning process in accordance with an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a side-blowing tin-smelting apparatus according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a side-blowing tin-smelting apparatus according to another embodiment of the present invention.
  • top blowing steel In the field of metallurgical technology, the difference between top and side blowing is not only the change in the position of the gun, but the reaction between the two is completely different smelting equipment and processes.
  • the first is the bottom blowing steel, but the later developed top blowing steel is a technological utility model, which is completely different from the bottom blowing. This is not simply blowing the spray gun from the bottom. It becomes a top blow, but it embodies different methods and conditions. It is a completely different type of furnace and process.
  • top-blowing technology In the field of metallurgical technology, the use of top-blowing technology or side-blowing technology results in different kinetic conditions, melt agitation conditions and reaction mechanism (reaction sequence) of the melt in the furnace.
  • each metal element has unique physical and chemical properties. Therefore, the installation of a metal device and process without creative labor (modification) cannot be used to smelt another metal.
  • the equipment and processes for smelting tin are completely different from the equipment and processes for smelting lead. That is to say, without creative labor (modification), for example, it is impossible to smelt tin using equipment and processes for smelting lead.
  • a side blowing tinning process according to an embodiment of the present invention will be described below with reference to FIG. As shown in FIG. 1, the side blowing tinning process according to an embodiment of the present invention includes the following steps:
  • the side blowing tin-removing process can perform reduction smelting and strong reduction smelting in a single side blowing tin-smelting device by performing strong reduction smelting on the tin-rich slag obtained after reduction smelting, that is, can be single-closed
  • the blown tin is realized in the side blowing tin-making apparatus. Therefore, not only the enthalpy of the tin-rich slag can be fully utilized, but also the process of smelting tin can be greatly shortened, the direct yield of the reduced smelting tin can be improved, and the side-spinning tin-smelting process can be simplified.
  • the side blowing tin-smelting process according to the embodiment of the present invention has the advantages of simple process, low energy consumption, high environmental protection, high degree of automation, and high direct yield.
  • each of the first rough tin and the second coarse tin is intermittently discharged (cavity).
  • the investment can be reduced, the working conditions can be improved, the intermediate slag discharge process can be reduced, and the operating environment can be improved.
  • the lean slag can be discharged and then processed in a conventional smelting furnace.
  • the side-blow tinning process may further include: adding a vulcanizing agent to the furnace chamber, and spraying an oxygen-containing gas and fuel from a side of the furnace chamber And entering the furnace cavity to vulcanize and volatilize the lean tin slag and obtain a waste slag, and then discharge the waste slag.
  • the side blowing tin-removing process according to the embodiment of the present invention can perform the reductive smelting, the strong reduction smelting, and the vulcanization volatilization in a single side blowing tin-making apparatus by vulcanizing volatilization of the lean tin slag obtained after the strong reduction smelting, that is, The blowing of the tin can be achieved in a single closed side blowing tinning device.
  • the side blowing tin-smelting process according to the embodiment of the present invention has the advantages of simple process, low energy consumption, high environmental protection, high degree of automation, and high direct yield.
  • the vulcanizing agent may be intermittently added to the furnace chamber, and the waste slag may be intermittently discharged.
  • the tin-rich slag has a tin content of 15% by weight or less, the tin-rich slag has a tin content of 5% by weight or less, and the waste slag has a tin content of 0.3% by weight or less.
  • a tertiary air vent is provided on the side wall of the furnace chamber (the side wall of the furnace chamber is different from the wall of the hood), so that the flammable combustion in the flue gas is utilized by the air delivered from the tertiary vent. Things.
  • the side blowing tinning process further includes: conveying air from the side wall of the air outlet of the furnace chamber to the outlet to burn the smoke Combustible. That is, the flue gas may be produced during the reduction smelting, the strong reduction smelting, and the vulcanization volatilization process. Thereby, the combustibles in the flue gas can be more fully burned, thereby further improving the environmental friendliness of the side blowing tinning process.
  • the oxygen-containing gas has a volume concentration of oxygen of 30% to 65%. That is, the oxygen-containing gas has an oxygen content of 30 v% to 65 v%, and therefore, the oxygen-containing gas is industrial oxygen or oxygen-enriched air.
  • the reducing agent may be granulated coal. It is generally believed by those skilled in the art that the use of metallurgical coke as a reducing agent can effectively reduce the tin-containing material and the tin-rich slag. After in-depth research and creative labor, the inventor discovered that compared with the reduction of tin-containing materials and tin-rich slag by using metallurgical coke, the reduction of tin-containing materials and tin-rich slag by using granular coal can further reduce the lean slag.
  • the tin content in the tin-rich slag is less than or equal to 5 wt%, so that the direct yield and recovery of tin can be further improved. Therefore, by using granular coal as a reducing agent, technical bias is overcome and costs can be reduced.
  • the particle size of the granular coal may be less than or equal to a predetermined value.
  • the fuel may be selected from at least one of pulverized coal, natural gas, coke oven gas, and producer gas.
  • the flux may be limestone, quartz or a mixture of quartz and lime.
  • the vulcanizing agent may be pyrite.
  • the present invention also provides a side blowing tinning apparatus 10.
  • a side blowing tinning apparatus 10 according to an embodiment of the present invention will be described below with reference to FIG.
  • the side blowing tin-making apparatus 10 includes a reaction furnace 101 and a side blowing lance 102.
  • the furnace 101 has a furnace chamber 1011.
  • the wall of the furnace chamber 1011 is provided with a feeding port 1012, a slag opening 1013 and a tin discharging port 1014.
  • the top wall of the furnace chamber 1011 is provided with a venting port 1016 for discharging flue gas.
  • a side blow gun 102 is provided on the side wall of the furnace chamber 1011 to blow the oxygen-containing gas and fuel side into the furnace chamber 1011.
  • the side-blown tinning apparatus 10 can be used to implement the side-blow tinning process according to the above embodiment of the present invention.
  • the side-blowing tin-making apparatus 10 can realize the vulcanization and volatilization of the reduction smelting, the strong reduction smelting, and the lean slag in the single side blowing tin-making apparatus 10, that is, in the single closed side blowing tin-making apparatus 10
  • the blowing of tin is achieved, so the sealing performance is good and the environmental protection is high. Therefore, not only the enthalpy of the tin-rich slag can be fully utilized, but also the process of smelting tin can be greatly shortened, the direct yield of the reduced smelting tin can be improved, and the side-spinning tin-smelting device and process can be simplified.
  • the side blowing tin-removing device 10 has the advantages of low energy consumption, good sealing performance, high environmental protection, simple structure, and easy operation.
  • L1 is the liquid surface of the tin-rich slag and the lean tin slag
  • L2 is the liquid surface of the crude tin.
  • L1 is a liquid surface of the tin-rich slag
  • L1 is a liquid surface of the lean slag.
  • the molten pool of the furnace chamber 1011 is for accommodating the first crude tin, the second crude tin, the tin-rich slag, the lean tin slag, and the waste slag.
  • the reaction furnace 101 may be a horizontal furnace.
  • the reaction furnace 101 may be a long oval or rectangular fixed horizontal furnace.
  • the bottom wall of the furnace chamber 1011 may have a concave curved shape.
  • the feeding port 1012 is disposed on the side wall of the furnace chamber 1011
  • the tin-discharging port 1014 is disposed on the side wall of the furnace chamber 1011
  • the slag discharging port 1013 is disposed on the side wall of the furnace chamber 1011.
  • the tin port 1014 can be adjacent the bottom wall of the furnace chamber 1011. Thereby, the first coarse tin and the second coarse tin can be discharged more quickly and more thoroughly.
  • the tin discharge port 1014 is located at the first end of the furnace chamber 1011, and the slag discharge port 1013 is located at the second end of the furnace chamber 1011, wherein the first end of the furnace chamber 1011 is opposite to the second end of the furnace chamber 1011.
  • a spray gun port is disposed on a side wall of the furnace chamber 1011, and a side blow gun 102 is disposed in the spray gun port. This makes it easier and more secure to install the side blow gun 102.
  • the end of the side-blowing lance 102 may be located in the lance mouth, and the end of the side-blowing lance 102 may also extend out of the lance, that is, the end of the side blasting gun 102 may extend into the cavity 1011. .
  • the side-blowing lance 102 can spray an oxygen-containing gas and fuel onto the liquid surface L2 of the rough tin of the furnace chamber 1011 and the tin-rich slag (the lean slag) Below the liquid level L1.
  • the side-blowing lance 102 can inject oxygen-containing gas and fuel into the tin-rich slag and lean slag in the furnace chamber 1011. That is, the lance opening is located above the liquid level L2 of the rough tin of the furnace chamber 1011 and below the liquid level L1 of the rich tin slag (the lean slag).
  • the side blow gun 102 (the gun mouth) may be provided on the side wall of the lower portion of the furnace chamber 1011.
  • a plurality of side blowing lances 102 are provided, and a plurality of side blowing lances 102 are provided on the side walls of the furnace chamber 1011 at intervals in the longitudinal direction of the reaction furnace 101.
  • the structure of the side blowing tin-making apparatus 10 can be made more reasonable.
  • the longitudinal direction of the reaction furnace 101 is as shown by an arrow A in FIGS. 2 and 3.
  • the tin-containing material, the flux and the reducing agent are added into the furnace chamber 1011 from the feeding port 1012, and the oxygen-containing gas and the fuel are injected into the furnace chamber 1011 by the side-blowing lance 102 to reduce and smelt the tin-containing material and obtain the first coarse Tin and tin-rich slag.
  • the reducing agent is added into the furnace chamber of the reaction furnace, and the oxygen-containing gas and the fuel are injected into the furnace chamber 1011 by the side blowing lance 102 to perform strong reduction smelting on the slag-rich slag and obtain the second coarse tin and the lean Tin slag.
  • the vulcanizing agent is introduced into the furnace chamber 1011 from the feeding port 1012, and the oxygen-containing gas and the fuel are injected into the cavity 1011 by the side blowing lance 102 to vulcanize and volatilize the tin in the lean slag and obtain the waste slag.
  • a portion of the fuel injected by the side-blowing lance 102 can also be used as a reducing agent to reduce the tin-containing material and the tin-rich slag together with the added reducing agent.
  • the first rough tin and the second coarse tin may be periodically discharged from the furnace opening 1014 from the furnace opening 1014.
  • the waste slag i.e., the slag produced after the sulfur-depleted slag is vulcanized and volatilized in the furnace chamber 1011 is periodically discharged from the slag discharge port 1013 to the furnace chamber 1011.
  • a tertiary air vent is provided on the side wall of the furnace chamber (the side wall of the furnace chamber is different from the wall of the hood), so that the flammable combustion in the flue gas is utilized by the air delivered from the tertiary vent. Things.
  • a sanitary ventilating chamber and a dust removal system are provided at the feeding port 1012 to prevent the overflow of smoke and dust.
  • a ventilating chamber and a dust removal system are arranged at the slag port 1013 to prevent the overflow of smoke and dust.
  • the side blowing tinning apparatus 10 may further include a waste heat boiler 102 having a vertical rising section 1021, and the vertical rising section 1021 is integrally formed with the reaction furnace 101, and the vertical rising section 1021 is connected to the outlet 1016.
  • the waste heat boiler 102 can be used to recover the heat in the flue gas generated by the reduction smelting, the strong reduction smelting, and the vulcanization volatilization process.
  • the vertical rising section 1021 integrally with the reaction furnace 101, Thereby, the soot adhesion can be prevented, so that the side blowing tin-making apparatus 10 can be stably operated for a long period of time.
  • the vertical rising section 1021 has a cavity 10211 therein, and the cavity 10211 is in communication with the smoke outlet 1016.
  • the side blowing tin-making device 10 further includes a dust collector (for example, a bag dust collector), and the dust collector may be connected to the waste heat boiler to recover the reduction smelting, the strong reduction smelting, and the vulcanization and volatilization process by using the dust collector. Tin-containing soot in the generated flue gas.
  • a dust collector for example, a bag dust collector
  • the side-blow tinmaking apparatus 10 may further include a cooler that may be coupled to the waste heat boiler and the dust collector may be coupled to the cooler.
  • tin-containing soot can be added to the furnace chamber 1011.
  • the tin-containing material and the flux can be added to the furnace chamber 1011.
  • the tin-containing soot, the tin-containing material, and the flux may be added to the furnace chamber 1011.
  • the side-blowing tin-smelting apparatus 10 can realize regular tinning, regular tin discharge, and regular slagging.
  • tin concentrate smelting process in a closed reaction furnace 101, to avoid the escape of smoke, tin concentrate or other tin raw materials with the granulation directly into the furnace, the material preparation process is simple, the production process The tin soot produced in the middle is sealed and transported and returned to the ingredients, effectively preventing the dispersion of tin dust; the flue gas produced by the smelting and vulcanization is recovered and collected by the waste heat, and then sent to the desulfurization system.
  • the crude tin produced by the side melting furnace reduction smelting section and the strong reduction smelting section is discharged from the tin discharge port, and the waste slag which is vulcanized and volatilized is discharged from the slag discharge port, and the ventilating chamber is provided at the feeding port, the tin discharging port and the slag discharging port.
  • High recovery rate In the side-blowing tin furnace, due to the full utilization of the slag enthalpy, industrial smelting process uses industrial oxygen, and the use of granular coal as a reducing agent effectively reduces the amount of smoke and smoke, and reduces the rate.
  • the tin content in the slag increases the direct yield and recovery of tin.
  • side blowing tinning method is the method of all tinning, including material preparation system, the shortest process, simple process equipment, investment.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un appareil de fusion d'étain par soufflage latéral (10). L'appareil de fusion d'étain par soufflage latéral (10) comprend : un four de réaction (101) ; le four de réaction (101) comprend une chambre (1011) de four ; sur la paroi de la chambre (1011) de four se trouvent un orifice d'entrée de charge de matériau (1012), un orifice de sortie de rejet de scories (1013) et un orifice de sortie de rejet d'étain (1014). Le plafond de la chambre (1011) de four est pourvu d'orifices de sortie de fumée (1016) pour rejeter les gaz de combustion ; un pistolet de pulvérisation par soufflage latéral (102), le pistolet de pulvérisation par soufflage latéral (102) se trouvant sur la paroi latérale de la chambre (1011) de four pour souffler le gaz contenant de l'oxygène et le combustible dans la chambre (1011) de four.
PCT/CN2015/079923 2014-06-25 2015-05-27 Appareil de fusion d'étain par soufflage latéral Ceased WO2015196889A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201420348146.0 2014-06-25
CN201420348146.0U CN203960304U (zh) 2014-06-25 2014-06-25 侧吹炼锡装置
CN201410293171.8 2014-06-25
CN201410293171.8A CN104073652A (zh) 2014-06-25 2014-06-25 侧吹炼锡装置

Publications (1)

Publication Number Publication Date
WO2015196889A1 true WO2015196889A1 (fr) 2015-12-30

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PCT/CN2015/079923 Ceased WO2015196889A1 (fr) 2014-06-25 2015-05-27 Appareil de fusion d'étain par soufflage latéral

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WO (1) WO2015196889A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110170242A (zh) * 2019-04-10 2019-08-27 水口山有色金属有限责任公司 一种电子废料冶炼装置及其组成的电子废料、废气处理系统
CN113251799A (zh) * 2021-06-08 2021-08-13 金川集团股份有限公司 富氧燃烧炉生产金属化阳极板的装置
CN115478171A (zh) * 2022-08-01 2022-12-16 长沙有色冶金设计研究院有限公司 一种富氧侧吹炉及高硫冶金渣的处理方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634069A (en) * 1969-03-10 1972-01-11 Conzinc Riotinto Ltd Tin smelting
CN1861818A (zh) * 2006-06-12 2006-11-15 彭明求 侧吹沉没熔池熔炼法
CN102433450A (zh) * 2011-12-28 2012-05-02 个旧市富祥工贸有限责任公司 富氧侧吹还原熔池熔炼炉及其富锡复杂物料炼锡方法
CN104073652A (zh) * 2014-06-25 2014-10-01 中国恩菲工程技术有限公司 侧吹炼锡装置
CN203960304U (zh) * 2014-06-25 2014-11-26 中国恩菲工程技术有限公司 侧吹炼锡装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634069A (en) * 1969-03-10 1972-01-11 Conzinc Riotinto Ltd Tin smelting
CN1861818A (zh) * 2006-06-12 2006-11-15 彭明求 侧吹沉没熔池熔炼法
CN102433450A (zh) * 2011-12-28 2012-05-02 个旧市富祥工贸有限责任公司 富氧侧吹还原熔池熔炼炉及其富锡复杂物料炼锡方法
CN104073652A (zh) * 2014-06-25 2014-10-01 中国恩菲工程技术有限公司 侧吹炼锡装置
CN203960304U (zh) * 2014-06-25 2014-11-26 中国恩菲工程技术有限公司 侧吹炼锡装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110170242A (zh) * 2019-04-10 2019-08-27 水口山有色金属有限责任公司 一种电子废料冶炼装置及其组成的电子废料、废气处理系统
CN113251799A (zh) * 2021-06-08 2021-08-13 金川集团股份有限公司 富氧燃烧炉生产金属化阳极板的装置
CN115478171A (zh) * 2022-08-01 2022-12-16 长沙有色冶金设计研究院有限公司 一种富氧侧吹炉及高硫冶金渣的处理方法
CN115478171B (zh) * 2022-08-01 2024-01-30 长沙有色冶金设计研究院有限公司 一种富氧侧吹炉及高硫冶金渣的处理方法

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