WO2023284293A1 - 一种侧式入粉料顶吹炉及其处理方法 - Google Patents

一种侧式入粉料顶吹炉及其处理方法 Download PDF

Info

Publication number
WO2023284293A1
WO2023284293A1 PCT/CN2022/075951 CN2022075951W WO2023284293A1 WO 2023284293 A1 WO2023284293 A1 WO 2023284293A1 CN 2022075951 W CN2022075951 W CN 2022075951W WO 2023284293 A1 WO2023284293 A1 WO 2023284293A1
Authority
WO
WIPO (PCT)
Prior art keywords
furnace
tin
powdery material
powdery
feeding
Prior art date
Application number
PCT/CN2022/075951
Other languages
English (en)
French (fr)
Inventor
宋兴诚
唐都作
张璋
袁海滨
刘庆东
徐万立
张驰
王建伟
陈云
张瑜梅
Original Assignee
云南锡业股份有限公司锡业分公司
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
Application filed by 云南锡业股份有限公司锡业分公司 filed Critical 云南锡业股份有限公司锡业分公司
Priority to US17/693,325 priority Critical patent/US20230014060A1/en
Publication of WO2023284293A1 publication Critical patent/WO2023284293A1/zh

Links

Images

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to the technical field of pyromelting crude tin, and more specifically relates to a side-type powder-feeding top-blown furnace and a processing method thereof.
  • tin-containing materials processed mainly include tin concentrate, tin calcine after roasting and desulfurization of arsenic, fuming furnace fuming and volatilizing low-tin materials
  • calcined sand and soot materials have finer particle size and lower water content, and are prone to flying loss during transfer and feeding.
  • powdered tin materials These materials with small particle size and low water content can be collectively referred to as powdered tin materials, and the percentage of such materials in the tin smelting system is about 40-60% of the total smelting tin materials, accounting for a relatively large proportion. It is of great significance to reduce costs, increase efficiency and improve the operating environment of tin smelters, and it is worthy of further exploration.
  • pre-smelting pretreatment is usually required to produce various tin-containing powder materials, such as tin-containing powder materials produced by fluidized bed furnace roasting, and tin-containing powder materials produced by fuming furnaces.
  • Tin-containing dust, tin-containing dust produced by other smelting furnaces and other tin-containing powdery materials; the above-mentioned types of tin-containing powdery materials need to be transported pneumatically or transported by car to the batching silo, and then batched in front of the furnace. The belt is transported to the top blowing furnace for melting.
  • the present invention provides a side-type powder-feeding top-blowing furnace and its treatment method, which can solve the problems of large transportation flying loss, large amount of returned materials, and poor operating environment in the tin smelting process of smelting powdery tin materials. , endangering the health of operators and other issues.
  • a side-type powder-feeding top-blowing furnace including: a cylindrical furnace body, a powder-like material feeding nozzle, a furnace top sample rod, a top-blowing furnace spray gun, a belt conveying inlet, a split conveying pipe, and a quantitative pneumatic conveying device , powdery material collection bin, powdery material collection bin feed port, furnace top cover;
  • the furnace inlet nozzle for the powdery material is symmetrically arranged around the furnace wall of the cylindrical furnace body and is on the same horizontal plane, the furnace inlet nozzle for the powdery material is at an angle to the furnace wall, and the center of the nozzle is directly facing the center line of the furnace bottom;
  • a furnace roof is arranged on the top of the cylindrical furnace body, and the top blowing furnace lance passes through the center of the furnace roof and extends into the bottom of the cylindrical furnace body;
  • the bottom of the cylindrical furnace body; the belt conveying feed inlet is set on the furnace top cover;
  • the top of the powder material collection bin is provided with a powder material collection bin feed port, and the bottom of the powder material collection bin is connected to a quantitative pneumatic conveying device, and the quantitative pneumatic conveying device is connected to the powder material furnace inlet nozzle through a diversion conveying pipe .
  • the vertical positions of the corresponding nozzles symmetrically opposite to the furnace inlet nozzles of the powdery materials are set on the horizontal plane of the slag line where the jet intersection point is at the maximum processing capacity of the top-blowing furnace.
  • the number of nozzles for feeding the powdery material into the furnace can be selected as other even numbers.
  • the feed port of the powdery material collection bin receives powdery tin material and pulverized coal from different stages in the tin smelting process, and several powdery material collection bin feed ports respectively correspond to powdery materials from different sources.
  • the powdery material collection bin is also equipped with a DCS control system, by setting the unit time and conveying speed, the powdery material is sent into the powdery material collection bin by quantitative pneumatic conveying to complete the mixing.
  • DCS control system by setting the unit time and conveying speed, the powdery material is sent into the powdery material collection bin by quantitative pneumatic conveying to complete the mixing.
  • the conveying speed of the quantitative pneumatic conveying device is 10-35t/h, and the conveying pressure is 0.6-0.9MPa.
  • a treatment method for a side-type powder-feeding top-blowing furnace The specific steps are: setting the parameters of the DCS control system, and using quantitative air force
  • the way of conveying is to send the materials into the powder material collection bin for mixing and storage; in the smelting stage of tin smelting, the base material is put into the cylindrical furnace body, and the spray gun of the top blowing furnace melts the melting pool and is stored in the powder material collection bin
  • the powdery material is conveyed per unit time through the DCS control system, the kinetic energy is provided by the quantitative pneumatic conveying device, and the powdery material is evenly transported to the furnace inlet nozzle through the split conveying pipe, and then sprayed into the cylinder through the powder material inlet nozzle smelting in the furnace body; other tin-containing materials, solvents
  • the agent and reduced coal are fed into the cylindrical furnace body through the belt feeding inlet opened on the furnace roof; stop feeding, enter the reduction stage, and start the judgment of the tin and slag discharge stage, and pass the furnace top sample rod in the smelting process Take slag samples for analysis to determine the progress of smelting.
  • the lance of the top-blown furnace melts the molten pool, and feeds materials when the depth of the molten pool is greater than or equal to 500 mm.
  • the top blowing furnace lance continuously provides heat for the cylindrical furnace body at the smelting gun position.
  • the other tin-containing materials, solvents and reduced coal are added with water, they are fed into the cylindrical furnace body through the belt conveying inlet provided on the furnace roof until the total amount of materials input reaches the top-blowing furnace single-entry Furnace smelting volume setting value, continuous smelting until no raw material can be detected by the furnace top sample rod.
  • the powdery material inlet nozzle stops conveying powdery material into the furnace, but the powdery material inlet nozzle is loaded with wind continuously, in order to prevent the powdery material from entering the furnace nozzle Blocked by splashed slag, spray into the furnace with the lowest air flow, the top-blown furnace spray gun rises to the reduction gun position, and the belt conveying inlet continues to input reduced coal.
  • a slag sample from the furnace top sample rod for analysis, and send it for analysis. If the slag contains less than 5% tin, start to release tin and slag. The released crude tin is sent to the refining process for treatment, and the slag is fumed and recovered tin.
  • the invention provides a side-type powder-feeding top-blown furnace and its treatment method.
  • the invention uses the powdered tin calcine produced by the desulfurization of the fluidized roaster, and fumes the tin ore and tin slag to be enriched in the fuming furnace.
  • the collection of different powdery tin materials in proportion is carried out by quantitative pneumatic conveying at the same time, so that the mixing process can be completed in the powdery material collection bin through air flow disturbance, and the rapid melting of powdery tin materials can be realized.
  • the invention provides a side-type powder-feeding top-blowing furnace to realize the airtight connection between the silo and the silo during the entire conveying process, simplify the powder transportation process, avoid the flying loss in the powder conveying process, and greatly improve the staff operating environment.
  • the powder materials from different sources on the top of the powder material collection bin are provided with a separate powder material collection bin feed port. According to production needs, by adjusting the conveying flow rate of different powder materials, different powder materials can be transported at the same time. Proportion In the powder material collection bin, the air flow disturbance is used to complete the uniform mixing process, which is convenient for the accurate control and production management of the smelting powder.
  • the powder is evenly distributed to the four powder materials in the furnace body through the distribution pipeline into the furnace nozzle, so that the material flow is dispersed into the furnace from different directions, so that the raw material accumulation is not easy to occur during the powder feeding process.
  • the furnace knot; the symmetrical arrangement of the nozzles also reduces the impact and wear of the carrier airflow on the furnace wall, which has a positive effect on protecting the furnace lining; the nozzles are inclined
  • the jet intersection point is located at the position of the slag liquid surface with the maximum processing capacity of the single furnace, which not only keeps the nozzles away from the high-temperature melting zone to a certain extent, prolongs the service life of the nozzles, but also makes the carrier air flow have the same effect on the molten pool as the furnace body spray gun. Stirring action towards the force.
  • the invention changes the feeding mode of powdery tin-containing materials in the tin smelting process of the top blowing furnace. Instead of using a belt to transport the material from the feed inlet to the cylinder mixer after adding water and then feeding the material after granulation, the powdery tin-containing material is directly sprayed into the molten pool at high speed by pneumatic conveying. It not only greatly avoids the phenomenon that a large amount of powdery materials enter the dust collection system when feeding from the furnace top, resulting in a low direct yield of tin smelting, but also reduces the amount of water input, saves the dust granulation process, and simplifies the process of powdered tin smelting.
  • the material feeding process reduces the difficulty of subsequent flue gas treatment in the top-blowing furnace system, and also plays a positive role in improving the processing capacity of the top-blowing furnace.
  • the powder injected into the furnace is mixed with pulverized coal as fuel in the powder material collection bin in proportion, so that the pulverized coal burns and gradually begins to melt during the injection process, further improving the melting efficiency of the top-blown furnace.
  • Fig. 1 is the structural representation of side-type top-blowing furnace of powder feeding of the present invention
  • Embodiment 1 of the present invention provides a treatment method for a side-type powder-feeding top-blown furnace.
  • the side-type powder-feed top-blown furnace is shown in Figure 1.
  • the working process of the side-type powder-feed top-blown furnace is as follows:
  • the powdered tin calcined sand Sn 35wt.%, S1.1wt.%, As 0.8wt.%, H 2O ⁇ 3wt.% produced by the desulfurization of the fluidized roaster will be smoked in the fuming furnace Powdered tin fume produced by enriching tin ore and tin slag
  • the powdery tin materials and pulverized coal from different sources in the factory are sent to the powdery material collection bin 8 at the same time through the corresponding quantitative pneumatic conveying device to complete the mixing, of which the powdery tin calcine accounts for 40%, and the powdery fuming furnace Smoke and dust accounted for 30%, powdered top-blown furnace smoke and dust accounted for 20%, and pulverized coal accounted for 10%.
  • the feed rate is controlled by the DCS control system, and the feed port 5 is conveyed into the furnace by a belt.
  • the spray gun 4 of the top blowing furnace is in the smelting The gun position continuously provides heat to the furnace.
  • the single feeding process ends, the pneumatic conveying is stopped to send powdered tin materials and the belt conveying feed port 5 is used to feed other tin materials, and the top blowing furnace enters the smelting stage. But the nozzle is still in the injection state without loading material, and the injection air volume is adjusted to the minimum value.
  • the smelting process continue to input reduced coal to maintain the reducing atmosphere in the furnace by controlling the feeding rate of the belt feeding inlet 5, and lower the furnace top sample rod 3 at regular intervals, and observe the slag sample brought out by the furnace top sample rod 3 The entrainment of raw materials determines the timing of entering the strong reduction stage.
  • Embodiment 2 of the present invention provides a kind of processing method of side-type top-blown powder-feeding furnace, and working procedure is as follows:
  • the powdered tin calcined sand Sn 38wt.%, S0.86wt.%, As 1.0wt.%, H 2 O ⁇ 2wt.% produced by the desulfurization of the fluidized roaster, fuming furnace
  • the powdery tin fume produced by enriching tin ore and tin slag Sn 42wt.%, Pb 0.5wt.%, S 0.8wt.%, As 2.0wt.%, Fe 3.5wt.%, H2O ⁇ 4.0wt.
  • powdery tin fumes collected from the waste heat boiler and electric precipitator of the flue gas treatment system during the smelting process of the top-blown furnace Sn40wt.%, Pb 2.1wt.%, S 0.68wt.%, As 1.5wt.%, Fe 3.6wt.%, H2O ⁇ 5wt.%, and several kinds of powdered tin materials and pulverized coal from different sources in the tin smelter are simultaneously sent to the powdery material collection bin 8 through the corresponding quantitative pneumatic conveying device to complete the mixing.
  • powdery tin calcine accounts for 45%
  • pulverized coal accounts for 8%.
  • the feed rate is controlled by the DCS control system, and the feed port 5 is conveyed into the furnace by a belt.
  • the spray gun 4 of the top blowing furnace is in the smelting The gun position continuously provides heat to the furnace.
  • the single feeding process ends, the pneumatic conveying is stopped to send powdered tin materials and the belt conveying feed port 5 is used to feed other tin materials, and the top blowing furnace enters the smelting stage. But the nozzle is still in the injection state without loading material, and the injection air volume is adjusted to the minimum value.
  • the smelting process continue to input reduced coal to maintain the reducing atmosphere in the furnace by controlling the feeding rate of the belt feeding inlet 5, and lower the furnace top sample rod 3 at regular intervals, and observe the slag sample brought out by the furnace top sample rod 3 The entrainment of raw materials determines the timing of entering the strong reduction stage.

Abstract

本发明公开了一种侧式入粉料顶吹炉及其处理方法，所述侧式入粉料顶吹炉包括：圆筒状炉体、粉状物料入炉喷嘴、炉顶样杆、顶吹炉喷枪、皮带输送进料口、分流输送管、定量气力输送装置、粉状物料汇集仓、粉状物料汇集仓进料口、炉顶盖；所述粉状物料入炉喷嘴对称设置在圆筒状炉体的炉壁四周，并处于同一水平面，所述粉状物料入炉喷嘴与炉壁呈45度角，喷嘴中心正对炉底中心线。本发明能够解决锡冶炼流程中，冶炼粉状锡物料存在的运输飞扬损失大、返料量大、操作环境差、危害操作人员身体健康等问题。

Description

一种侧式入粉料顶吹炉及其处理方法 技术领域
本发明涉及火法熔炼粗锡技术领域，更具体的说是涉及一种侧式入粉料顶吹炉及其处理方法。
背景技术
大型锡冶炼厂一般选择炉床能力高的顶吹炉作为锡熔炼设备，处理的含锡物料主要有锡精矿、经焙烧脱砷硫后的锡焙砂、烟化炉烟化挥发低锡物料后得到的粉状锡烟尘、顶吹炉熔炼过程中在尾气系统中捕集到的粉状锡烟尘等。其中焙砂与烟尘类物料均粒度较细，水分较低，在转运与投料过程中易发生飞扬损失。这些粒度小、含水低的物料可统称为粉状锡物料，且这类物料在锡冶炼系统中占总熔炼投入锡物料的百分比约为40～60％，占比较大，其处理方法的优化对锡冶炼厂降本增效、改善操作环境具有十分重要的意义，值得深入探究。
在目前的大型锡冶炼厂生产过程中，所有含锡物料均通过皮带输送，从炉顶投入顶吹冶炼炉内进行还原熔炼产粗锡，水分较低、颗粒度较小的含锡物料还需要加水制粒，入炉的混合物料水分含量一般需要达到10％左右。入炉物料中混入大量的水，不仅使冶炼炉床能力降低，还增加了冶炼能耗，并使得冶炼过程中产出的烟气伴有大量高温蒸汽，进入到后续烟气处理系统中后，增加了处理难度和处理成本。由于冶炼厂处理的含锡物料种类及成分较为复杂，通常需要进行炼前预处理，产出各类含锡粉状物料，比如沸腾炉焙烧产出的含锡粉状物料、烟化炉产出的含锡烟尘、其他冶炼炉产出的含锡烟尘等含锡粉状物料；上述各类含锡粉状物料需经气力输送或用汽车转运至配料矿仓内，再经过炉前配料后，经皮带输送至顶吹炉内进行熔炼。因此，各类含锡粉状物料的倒运过程，难免出现泼洒、漏料、飞扬等损失，含锡粉状物料在炉顶皮带输送进冶炼炉内的过程中，在冶炼炉内下落行程较长，极易随炉膛烟气进入尾气收尘系统内，随后又进入配料流程，加大了冶炼过程的返料量，并在返料过程中加大物料的损失，降低锡冶炼直收率及回收率，提升冶炼成本，同时还使现场操作环境被粉尘污染。
为解决以上各含锡粉状物料在冶炼生产过程中存在的增加冶炼能耗、增加尾气处理系统负担、倒运造成烟尘飞扬所带来的金属损失和操作环境差、降低锡冶炼综合回收率等问题，锡冶炼领域迫切需要研发一种对含锡粉状物料的分类处置方法，以便达到锡冶炼生产作业环境清洁、锡冶炼直收率高、绿色节能的效果。
因此，提供一种清洁环保高效的粉状锡物料处理方法，是本领域技术人员亟需解决的问题。
发明内容
有鉴于此，本发明提供了一种侧式入粉料顶吹炉及其处理方法，能够解决锡冶炼流程中，冶炼粉状锡物料存在的运输飞扬损失大、返料量大、操作环境差、危害操作人员身体健康等问题。
为了实现上述目的，本发明采用的技术方案如下：
一种侧式入粉料顶吹炉，包括：圆筒状炉体、粉状物料入炉喷嘴、炉顶样杆、顶吹炉喷枪、皮带输送进料口、分流输送管、定量气力输送装置、粉状物料汇集仓、粉状物料汇集仓进料口、炉顶盖；
所述粉状物料入炉喷嘴对称设置在圆筒状炉体的炉壁四周，并处于同一水平面，所述粉状物料入炉喷嘴与炉壁呈度角，喷嘴中心正对炉底中心线；
所述圆筒状炉体的顶部设置炉顶盖，所述顶吹炉喷枪穿过炉顶盖中心，伸入圆筒状炉体底部；所述炉顶样杆穿过炉顶盖伸入圆筒状炉体底部；所述皮带输送进料口开设在炉顶盖上；
所述粉状物料汇集仓顶部设置粉状物料汇集仓进料口，所述粉状物料汇集仓底部连通定量气力输送装置，所述定量气力输送装置通过分流输送管与粉状物料入炉喷嘴连通。
优选的，所述粉状物料入炉喷嘴对称相对的个对应喷嘴的垂直位置，设置在使射流交点在顶吹炉最大处理能力的渣线水平面上。
优选的，所述粉状物料入炉喷嘴的数量，可选择为其他偶数个数。
优选的，所述粉状物料汇集仓进料口接收锡冶炼过程中不同工段的粉状锡物料及粉煤，若干粉状物料汇集仓进料口分别对应不同来源的粉状物料。
优选的，所述粉状物料汇集仓还设置DCS控制系统，通过设置单位时间、输送速度，将粉状物料采用定量气力输送的方式送入粉状物料汇集仓中完成混料。
优选的，所述定量气力输送装置的输送速度为10-35t/h，输送压力为0.6-0.9MPa。
一种侧式入粉料顶吹炉的处理方法，具体步骤为：设置DCS控制系统的参数，将锡冶炼过程中不同工段的粉状锡烟尘、粉煤和粉状锡焙砂，采用定量气力输送的方式，送入粉状物料汇集仓中混料并储存；炼锡的熔炼阶段，在圆筒状炉体内投入底料，顶吹炉喷枪熔化造熔池，储存于粉状物料汇集仓中的粉状料，通过DCS控制系统设定单位时间输送量，经过定量气力输送装置提供动能，通过分流输送管均匀输送至粉状物料入炉喷嘴，再经由粉状物料入炉喷嘴喷射入圆筒状炉体内熔炼；其他含锡物料、溶
剂和还原煤通过开设在炉顶盖上的皮带输送进料口投入圆筒状炉体内；停止送料，进入还原阶段，开始对放锡、放渣阶段的判定，通过炉顶样杆在熔炼过程中取渣样分析，判定熔炼进行程度。
优选的，所述顶吹炉喷枪熔化造熔池，当熔池深度≥500mm后进行投料。
优选的，在使用定量气力输送装置往圆筒状炉体内输送粉状料的同时，顶吹炉喷枪在熔炼枪位持续不断的为圆筒状炉体内提供热量。
优选的，所述其他含锡物料、溶剂和还原煤加水后，再通过开设在炉顶盖上的皮带输送进料口投入圆筒状炉体内，直到物料投入总量达到顶吹炉单次入炉熔炼量设定值，持续熔炼直至炉顶样杆探测不到生料。
优选的，所述停止送料，进入还原阶段的过程中，粉状物料入炉喷嘴停止往炉内输送粉状料，但粉状物料入炉喷嘴载料风不断，为防止粉状物料入炉喷嘴被飞溅炉渣堵塞，以最低风流量往炉内喷射，顶吹炉喷枪升至还原枪位，皮带输送进料口继续投入还原煤。
优选的，在还原一段时间后，炉顶样杆取渣样分析，送去分析，若渣含锡＜5％，则开始放锡放渣，放出的粗锡送精炼工序处理，炉渣烟化回收锡。
经由上述技术方案可知，与现有技术相比，本发明的有益效果如下：
本发明提供了一种侧式入粉料顶吹炉及其处理方法，本发明将流态化焙烧炉脱硫产出的粉状锡焙砂，烟化炉烟化富集锡中矿、锡炉渣而产出的粉状锡烟尘，顶吹炉熔炼过程中在烟气处理系统余热锅炉与电收尘器收集到的粉状锡烟尘，等数种锡冶炼厂中不同来源的含锡粉状物料，通过气力输送的方式直接从圆筒状炉体侧壁均匀的送入熔池进行熔炼，而不通过开设在炉顶盖上的皮带输送进料口自然落入熔池。不同粉状锡物料按比例汇集是同时用定量气力输送的方式进行输送，这样即可在粉状物料汇集仓通过气流扰动完成混料过程，实现快速熔炼粉状锡物料。
本发明提供侧式入粉料顶吹炉在整个输送过程实现了料仓与料仓间的密闭衔接，简化了粉料的运输流程，避免了粉料输送过程中的飞扬损失，极大改善员工的操作环境。粉状物料汇集仓顶部不同来源的粉料设置有单独的粉状物料汇集仓进料口，可根据生产需要，通过调整不同粉料的输送流量，在同时输送的状态下，实现不同粉料按比例在粉状物料汇集仓内利用气流扰动完成均匀混料过程，方便于熔炼粉料的准确控制与生产管理。
在输送过程中的粉料，通过分流管路均匀的分流至炉体的四个粉状物料入炉喷嘴中，使料流从不同方位分散入炉，让粉料投料过程不易出现生料堆积出现的炉结；喷嘴对称布置，也减轻了载料气流对炉壁的冲击磨损，对保护炉衬有积极作用；喷嘴斜
向下布置，且使射流交点位于单炉最大处理能力渣液面位置，不仅使喷嘴一定程度上远离高温熔炼区，延长喷嘴使用寿命，还使载料气流对熔池起到与炉体喷枪同向作用力的搅拌作用。
本发明改变了顶吹炉熔炼锡过程中，粉状含锡物料的投料方式。将原本需要制粒后再用皮带输送进料口转送至圆筒混料机加水后投料的方式，改为用气力输送将粉状含锡物料直接高速喷入熔池。不仅极大程度避免了从炉顶投料时粉状物料大量进入收尘系统导致锡熔炼直收率低的现象，而且减少了水的投入量，省去了烟尘制粒过程，简化了粉状锡物料的投料流程，降低了顶吹炉系统后续烟气的处理难度，对提升顶吹炉处理能力也有积极作用。另外，喷射入炉内的粉料中在粉状物料汇集仓内按比例混入了粉煤作燃料，使得粉料在喷射过程中粉煤燃烧而逐步开始熔化，进一步提升顶吹炉熔炼效率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1附图为本发明侧式入粉料顶吹炉的结构示意图；
图中：1-圆筒状炉体、2-粉状物料入炉喷嘴、3-炉顶样杆、4-顶吹炉喷枪、5-皮带输送进料口、6-分流输送管、7-定量气力输送装置、8-粉状物料汇集仓、9-粉状物料汇集仓进料口、10-炉顶盖。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1
本发明实施例1提供了一种侧式入粉料顶吹炉的处理方法，所述侧式入粉料顶吹炉如图1所示，侧式入粉料顶吹炉的工作流程如下：
将在锡冶炼系统中，流态化焙烧炉脱硫产出的粉状锡焙砂Sn 35wt.％、S1.1wt.％、As 0.8wt.％、H 2O≤3wt.％，烟化炉烟化富集锡中矿、锡炉渣而产出的粉状锡烟尘
Sn 45wt.％、Pb 0.2wt.％、S 0.9wt.％、As 1.5wt.％、Fe 2wt.％、H2O≤4.5wt.％，顶吹炉熔炼过程中在烟气处理系统余热锅炉与电收尘器收集到的粉状锡烟尘Sn 38wt.％、Pb1.0wt.％、S 0.75wt.％、As 1.8wt.％、Fe 3wt.％、H2O≤4.5wt.％，等数种锡冶炼厂中不同来源的粉状锡物料以及粉煤，通过对应定量气力输送装置同时送入粉状物料汇集仓8中，完成混料，其中粉状锡焙砂占比40％，粉状烟化炉烟尘占比30％，粉状顶吹炉烟尘占比20％，粉煤占比10％。
在规格Φ5m顶吹炉投料阶段，首先用皮带输送进料口5输送物料投入底料，然后下顶吹炉喷枪4熔化底料造熔池，当熔池深度达500mm后，开始进入正常投料阶段。调整定量气力输送装置7的输送压力为0.7MPa，单位输送量为30t/h，料流经分流输送管6分流后，分别通过四个粉状物料入炉喷嘴2喷射进入熔池熔炼。其他含锡≥35wt.％的物料、还原煤、溶剂经配料后，通过DCS控制系统控制进料速度，用皮带输送进料口5投入炉中，整个投料过程，顶吹炉喷枪4均处于熔炼枪位持续为炉内提供热量。
当所有含锡物料的累计投料量达90t后，单次投料过程结束，停止气力输送投送粉状锡物料与皮带输送进料口5投送其他锡物料，顶吹炉进入熔炼阶段。但喷嘴依旧处于不载料的喷射状态，喷射风量调至最小值。在熔炼过程中，继续通过控制皮带输送进料口5进料速率持续投入还原煤保持炉内还原气氛，并间隔一定时间下炉顶样杆3，通过观察炉顶样杆3带出的渣样夹带生料情况判定进入强还原阶段的时机。进入强还原阶段后，加大还原煤投入量，还原一定时间后，下炉顶样杆3取渣样，快速分析渣中含锡量，当取出的渣样含Sn＜5％时，进入放锡放渣阶段，单炉熔炼过程完成，之后进入下一个炉期。
实施例2
本发明实施例2提供了一种侧式入粉料顶吹炉的处理方法，工作流程如下：
将在锡冶炼系统中，流态化焙烧炉脱硫产出的粉状锡焙砂Sn 38wt.％、S0.86wt.％、As 1.0wt.％、H 2O≤2wt.％，烟化炉烟化富集锡中矿、锡炉渣而产出的粉状锡烟尘Sn 42wt.％、Pb 0.5wt.％、S 0.8wt.％、As 2.0wt.％、Fe 3.5wt.％、H2O≤4.0wt.％，顶吹炉熔炼过程中在烟气处理系统余热锅炉与电收尘器收集到的粉状锡烟尘Sn40wt.％、Pb 2.1wt.％、S 0.68wt.％、As 1.5wt.％、Fe 3.6wt.％、H2O≤5wt.％，等数种锡冶炼厂中不同来源的粉状锡物料以及粉煤，通过对应定量气力输送装置同时送入粉状物料汇集仓8中，完成混料，其中粉状锡焙砂占比45％，粉状烟化炉烟尘占比25％，粉状顶吹炉烟尘占比22％，粉煤占比8％。
在规格Φ5m顶吹炉投料阶段，首先用皮带输送进料口5输送物料投入底料，然后下顶吹炉喷枪4熔化底料造熔池，当熔池深度达500mm后，开始进入正常投料阶段。调整定量气力输送装置7的输送压力为0.8MPa，单位输送量为20t/h，料流经分流输送管6分流后，分别通过四个粉状物料入炉喷嘴2喷射进入熔池熔炼。其他含锡≥35wt.％的物料、还原煤、溶剂经配料后，通过DCS控制系统控制进料速度，用皮带输送进料口5投入炉中，整个投料过程，顶吹炉喷枪4均处于熔炼枪位持续为炉内提供热量。
当所有含锡物料的累计投料量达60t后，单次投料过程结束，停止气力输送投送粉状锡物料与皮带输送进料口5投送其他锡物料，顶吹炉进入熔炼阶段。但喷嘴依旧处于不载料的喷射状态，喷射风量调至最小值。在熔炼过程中，继续通过控制皮带输送进料口5进料速率持续投入还原煤保持炉内还原气氛，并间隔一定时间下炉顶样杆3，通过观察炉顶样杆3带出的渣样夹带生料情况判定进入强还原阶段的时机。进入强还原阶段后，加大还原煤投入量，还原一定时间后，下炉顶样杆3取渣样，快速分析渣中含锡量，当取出的渣样含Sn＜5％时，进入放锡放渣阶段，单炉熔炼过程完成，之后进入下一个炉期。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (6)

  1. 一种侧式入粉料顶吹炉，其特征在于，包括：圆筒状炉体(1)、粉状物料入炉喷嘴(2)、炉顶样杆(3)、顶吹炉喷枪(4)、皮带输送进料口(5)、分流输送管(6)、定量气力输送装置(7)、粉状物料汇集仓(8)、粉状物料汇集仓进料口(9)、炉顶盖(10)；
    所述粉状物料入炉喷嘴(2)对称设置在圆筒状炉体(1)的炉壁四周，并处于同一水平面，所述粉状物料入炉喷嘴(2)与炉壁呈45度角，喷嘴中心正对炉底中心线；
    所述圆筒状炉体(1)的顶部设置炉顶盖(10)，所述顶吹炉喷枪(4)穿过炉顶盖(10)中心，伸入圆筒状炉体(1)底部；所述炉顶样杆(3)穿过炉顶盖(10)伸入圆筒状炉体(1)底部；所述皮带输送进料口(5)开设在炉顶盖(10)上；
    所述粉状物料汇集仓(8)顶部设置粉状物料汇集仓进料口(9)，所述粉状物料汇集仓(8)底部连通定量气力输送装置(7)，所述定量气力输送装置(7)通过分流输送管(6)与粉状物料入炉喷嘴(2)连通。
  2. 根据权利要求1所述的一种侧式入粉料顶吹炉，其特征在于，所述粉状物料入炉喷嘴(2)对称相对的2个对应喷嘴的垂直位置，设置在使射流交点在顶吹炉最大处理能力的渣线水平面上。
  3. 根据权利要求1所述的一种侧式入粉料顶吹炉，其特征在于，所述粉状物料汇集仓进料口(9)接收锡冶炼过程中不同工段的粉状锡物料及粉煤，若干粉状物料汇集仓进料口(9)分别对应不同来源的粉状物料。
  4. 根据权利要求1所述的一种侧式入粉料顶吹炉，其特征在于，所述粉状物料汇集仓(8)还设置DCS控制系统，通过设置单位时间、输送速度，将粉状物料采用定量气力输送的方式送入粉状物料汇集仓(8)中完成混料。
  5. 根据权利要求1所述的一种侧式入粉料顶吹炉，其特征在于，所述定量气力输送装置(7)的输送速度为10-35t/h，输送压力为0.6-0.9MPa。
  6. 一种侧式入粉料顶吹炉的处理方法，其特征在于，具体步骤为：设置DCS控制系统的参数，将锡冶炼过程中不同工段的粉状锡烟尘、粉煤和粉状锡焙砂，采用定量气力输送的方式，送入粉状物料汇集仓(8)中混料并储存；炼锡的熔炼阶段，在圆筒状炉体(1)内投入底料，顶吹炉喷枪(4)熔化造熔池，储存于粉状物料汇集仓(8)中的粉状料，通过DCS控制系统设定单位时间输送量，经过定量气力输送装置(7)提供动能，通过分流输送管(6)均匀输送至粉状物料入炉喷嘴(2)，再经由粉状物料入炉喷嘴(2)喷射入圆筒状炉体(1)内熔炼；其他含锡物料、溶剂和还原煤通过开设在炉顶盖(10)上的皮 带输送进料口(5)投入圆筒状炉体(1)内；停止送料，进入还原阶段，开始对放锡、放渣阶段的判定，通过炉顶样杆(3)在熔炼过程中取渣样分析，判定熔炼进行程度。
PCT/CN2022/075951 2021-07-16 2022-02-11 一种侧式入粉料顶吹炉及其处理方法 WO2023284293A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/693,325 US20230014060A1 (en) 2021-07-16 2022-03-12 Side-type powder top blown furnace and method for treating same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110806443.XA CN113549774A (zh) 2021-07-16 2021-07-16 一种侧式入粉料顶吹炉及其处理方法
CN202110806443.X 2021-07-16

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/693,325 Continuation US20230014060A1 (en) 2021-07-16 2022-03-12 Side-type powder top blown furnace and method for treating same

Publications (1)

Publication Number Publication Date
WO2023284293A1 true WO2023284293A1 (zh) 2023-01-19

Family

ID=78131945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/075951 WO2023284293A1 (zh) 2021-07-16 2022-02-11 一种侧式入粉料顶吹炉及其处理方法

Country Status (2)

Country Link
CN (1) CN113549774A (zh)
WO (1) WO2023284293A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113549774A (zh) * 2021-07-16 2021-10-26 云南锡业股份有限公司锡业分公司 一种侧式入粉料顶吹炉及其处理方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003254528A (ja) * 2001-12-28 2003-09-10 Jfe Steel Kk 焼却灰の溶融炉および焼却灰の溶融処理法
CN207792713U (zh) * 2017-12-11 2018-08-31 神雾科技集团股份有限公司 一种生产电石的系统
CN108676942A (zh) * 2018-05-18 2018-10-19 廖辉明 一种含铁和或锌铅铜锡等物料与熔融钢渣协同处理回收方法
CN112391507A (zh) * 2020-11-17 2021-02-23 东北大学 一种改进的闪速熔融还原炼铁装置及炼铁方法
CN113549774A (zh) * 2021-07-16 2021-10-26 云南锡业股份有限公司锡业分公司 一种侧式入粉料顶吹炉及其处理方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001011514A (ja) * 1999-06-25 2001-01-16 Nkk Corp 大量生産に適した金属鉱石の溶融還元製錬方法及び装置
JP2001152258A (ja) * 1999-11-22 2001-06-05 Kawasaki Steel Corp 製錬炉ダストの回収再利用方法および装置
CN104651629B (zh) * 2013-11-25 2017-03-08 湖南水口山有色金属集团有限公司 一种还原炉烟灰喷粉入炉强化熔炼系统
RU2749184C1 (ru) * 2019-10-12 2021-06-07 Чайна Энфи Инджиниринг Корпорейшн Устройство и способ плавки никеля с верхним дутьем
CN111322869A (zh) * 2020-04-15 2020-06-23 云南锡业股份有限公司铜业分公司 锡精矿连续熔炼粗锡和炉渣连续烟化的冶炼炉及冶炼方法
CN216141595U (zh) * 2021-07-16 2022-03-29 云南锡业股份有限公司锡业分公司 一种侧式入粉料顶吹炉系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003254528A (ja) * 2001-12-28 2003-09-10 Jfe Steel Kk 焼却灰の溶融炉および焼却灰の溶融処理法
CN207792713U (zh) * 2017-12-11 2018-08-31 神雾科技集团股份有限公司 一种生产电石的系统
CN108676942A (zh) * 2018-05-18 2018-10-19 廖辉明 一种含铁和或锌铅铜锡等物料与熔融钢渣协同处理回收方法
CN112391507A (zh) * 2020-11-17 2021-02-23 东北大学 一种改进的闪速熔融还原炼铁装置及炼铁方法
CN113549774A (zh) * 2021-07-16 2021-10-26 云南锡业股份有限公司锡业分公司 一种侧式入粉料顶吹炉及其处理方法

Also Published As

Publication number Publication date
CN113549774A (zh) 2021-10-26

Similar Documents

Publication Publication Date Title
WO2020211689A1 (zh) 短流程处理铁基多金属矿料的熔炼方法及熔炼装置
CN106916966B (zh) 一种含锑物料的富氧氧化熔炼方法及其装置
CN101348842B (zh) 一种氧气顶吹熔融还原炼铁方法
WO2023284292A1 (zh) 一种含锡物料熔炼的系统及方法
CN101328543A (zh) 氧气底吹连续炼铜装置
CN101328547A (zh) 底吹吹炼炉连续炼铜的吹炼工艺
WO2023284293A1 (zh) 一种侧式入粉料顶吹炉及其处理方法
CN102304623A (zh) 一种铜吹炼渣还原贫化的方法和设备
CN101328544A (zh) 一种用于底吹连续炼铜的底吹吹炼炉
CN105603197A (zh) 一种锑渣和锑烟灰直接还原炼锑的装置及其工艺
CN102758094A (zh) 一种采用底吹熔池还原熔炼炼锑的工艺及其装置
CN104561405A (zh) 一种热态钢渣高温固化粒化与热量回收方法及其设备系统
CN216141595U (zh) 一种侧式入粉料顶吹炉系统
CN102127616B (zh) 利用电弧炉综合处理含铁粉尘的方法
CN110205483A (zh) 一种还原焙烧处理低品位锡原料的系统及工艺
CN101749931A (zh) 冶炼熔炉
CN108855368A (zh) 固体废物处理装置
CN111394588A (zh) 处理提钒尾渣直接产出铁钒铬合金的方法及装置
CN105695756A (zh) 一种铅锌冶炼渣综合回收处理方法及其处理设备
CN111020225A (zh) 一种锑矿石挥发熔炼和闪速熔炼同一炉膛同时混合冶炼用新型炉及其冶炼方法
US20230014060A1 (en) Side-type powder top blown furnace and method for treating same
CN215328314U (zh) 一种含锡物料熔炼的系统
CN113337745B (zh) 熔融含钛渣制备钛基合金的装置及方法
CN101565767A (zh) 一种熔融还原炼铁方法
CN101886183A (zh) 一种炼铅装置及使用该装置的炼铅方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22840939

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE