CN104152715A - Bottom blowing tin smelting process - Google Patents
Bottom blowing tin smelting process Download PDFInfo
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- CN104152715A CN104152715A CN201410337214.8A CN201410337214A CN104152715A CN 104152715 A CN104152715 A CN 104152715A CN 201410337214 A CN201410337214 A CN 201410337214A CN 104152715 A CN104152715 A CN 104152715A
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Abstract
The invention relates to a bottom blowing tin smelting process. The bottom blowing tin smelting process comprises the following steps: adding a tin-containing material and a fluxing agent into a molten pool of a first furnace chamber; blowing oxygen-containing gas and fuels from the bottom of the first furnace chamber to the interior of the first furnace chamber by utilizing a bottom blowing spray gun, so that the tin-containing material is smelted and crude tin and tin-enriched slag are produced; adding a reducing agent into the first furnace chamber, reducing the tin-enriched slag by utilizing the reducing agent, thereby obtaining lean tin slag; and discharging the crude tin from a crude tin discharging hole, and discharging the lean tin slag from a first slag tap. According to the embodiment of the invention, the bottom blowing tin smelting process has the advantages of simple process, low energy consumption, high environment friendliness, high degree of automation and the like.
Description
Technical field
The present invention relates to technical field of non-ferrous metallurgy, especially relate to bottom blowing tin-making process.
Background technology
The technology of tin metallurgy has tin concentrate reverberatory smelting technique, electrosmelting technique, Ausmelt melting technology, blast furnace smelting process, rotary furnace smelting technique, Kaldo Furnace tin-making process.Rotary furnace smelting technique system is interrupted smelting technology because investment, management and maintenance cost are high, exhaust gas volumn is large, and fluctuation is also large, and direct yield is low to be eliminated already.Kaldo Furnace is for tiltedly blowing rotation type of furnace device structure complexity, and maintenance cost is high, and the stove longevity is short, and refractory consumption rate is large.Reverberatory furnace, due to shortcomings such as the low production efficiency of its ability are low, thermo-efficiency is low, fuel consumption is large, labour intensity is large, is reinforced just rapidly melting method and replaces.The shortcoming power consumption of electric furnace tin-smelting is too high, is only suitable for processing low iron material and the abundant area of electric power; The shortcomings such as blast furnace smelting process requires material need to granulate or briquetting, consumes expensive metallurgical coke, and furnace atmosphere is restive, the evaporation rate height of tin, do not re-use.Ausmelt melting belongs to strengthening molten pool melting technology, segmentation operation, and the stanniferous lower level of being down to of slag, but investment is large, and maintenance cost is high, and complicated operation.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of technical problem in above-mentioned tin-making process correlation technique.For this reason, one object of the present invention is to propose a kind ofly have that technique is simple, energy consumption is low, the feature of environmental protection is high, the bottom blowing tin-making process of level of automation advantages of higher.
According to the embodiment of the present invention, a kind of bottom blowing tin-making process that utilizes bottom blowing tin metallurgy device to implement is proposed, described bottom blowing tin metallurgy device comprises: smelting furnace, in described smelting furnace, have the first furnace chamber, described smelting furnace has for adding the charging opening of material in described the first furnace chamber, for discharging the first slag notch of lean tin slag, for discharging the thick tin discharge outlet of thick tin, for discharging the first smoke outlet of flue gas and being located at the spray gun jack of the bottom of described smelting furnace; And Bottom Blowing Ejection Gun, described Bottom Blowing Ejection Gun is inserted in described spray gun jack, for be blown into oxygen-containing gas and fuel in described the first furnace chamber;
Described bottom blowing tin-making process comprises the following steps: stanniferous material and flux are joined in the molten bath of described the first furnace chamber; Utilize described Bottom Blowing Ejection Gun in described the first furnace chamber, to be blown into oxygen-containing gas and fuel from the bottom of described the first furnace chamber, to stanniferous material is carried out melting and produces thick tin and hardhead; Reductive agent is joined in described the first furnace chamber, to utilize reductive agent to reduce and obtain lean tin slag to described hardhead; With discharge thick tin from described thick tin discharge outlet, discharge lean tin slag from described the first slag notch.
Have according to the bottom blowing tin-making process of the embodiment of the present invention that technique is simple, energy consumption is low, the feature of environmental protection is high, level of automation advantages of higher.
According to one embodiment of present invention, described oxygen-containing gas and described fuel are continuously blown in described furnace chamber.
According to one embodiment of present invention, described stanniferous material is joined in described furnace chamber discontinuously, and described thick tin and described lean tin slag are discharged discontinuously.
According to one embodiment of present invention, described bottom blowing tin-making process further comprises:
Utilize waste heat boiler reclaim melting produce flue gas in heat and reduction produce flue gas in heat; With
Utilize dust-precipitator reclaim melting produce flue gas in stanniferous flue dust and reduction produce flue gas in stanniferous flue dust, through granulate after turn back in described furnace chamber.
According to one embodiment of present invention, the volumetric concentration of the oxygen of described oxygen-containing gas is 24%-60%.
According to one embodiment of present invention, described fuel is selected from least one in fine coal, Sweet natural gas, coke-oven gas and producer gas.
According to one embodiment of present invention, described reductive agent is beans.
According to one embodiment of present invention, described bottom blowing tin metallurgy device further comprises: fuming furnace, in described fuming furnace, have the second furnace chamber, described fuming furnace has for adding the heat material mouth of liquid lean tin slag in described the second furnace chamber, for adding the cold burden mouth of vulcanizing agent in described the second furnace chamber, for discharging the second smoke outlet of flue gas, for discharging the second slag notch and the side-blown spray gun jack of waste; And side-blown spray gun, described side-blown spray gun is inserted in described side-blown spray gun jack, for be blown into oxygen-containing gas and fuel in described the second furnace chamber;
Described bottom blowing tin-making process further comprises: liquid lean tin slag is joined in described the second furnace chamber from described heat material mouthful, and vulcanizing agent is joined in described the second furnace chamber from described cold burden mouth; Utilize described side-blown spray gun in described the second furnace chamber, to be blown into oxygen-containing gas and fuel from the side of described the second furnace chamber, to lean tin slag is vulcanized and produces waste; With from described second slag notch discharge waste.
According to one embodiment of present invention, described bottom blowing tin-making process further comprises: solid-state stanniferous material is joined in described the second furnace chamber from described cold burden mouth.
According to one embodiment of present invention, described solid-state stanniferous material comprises at least one in lean tin slag and medium tin ore.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the schematic diagram of the bottom blowing tin metallurgy device of the embodiment of the present invention;
Fig. 2 is according to the transverse sectional view of the bottom blowing tin metallurgy device of the embodiment of the present invention;
Fig. 3 is according to the transverse sectional view of the bottom blowing tin metallurgy device of the embodiment of the present invention;
Fig. 4 is the schematic diagram of the projection on perpendicular according to the bottom blowing tin metallurgy device of the embodiment of the present invention;
Fig. 5 is according to the schema of the bottom blowing tin-making process of the embodiment of the present invention;
Fig. 6 is according to the structural representation of the fuming furnace of the bottom blowing tin metallurgy device of the embodiment of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In metallurgical technology field, the difference of top blast and side-blown is not only the variation of Burners Positions, the two reaction be diverse smelting equipment and technique.For example, in steelmaking technical field, initial is all bottom blowing steel-making, but the top blast of development steel-making is afterwards initiative invention, with bottom blowing be diverse technology, this is not simply spray gun to be become to top blast from bottom blowing, but has embodied diverse ways and condition, is the diverse two class type of furnace and techniques.
In metallurgical technology field, adopt top blast technology still to adopt side-blown technology, can cause dynamic conditions, Melt Stirring state and reaction mechanism (reaction sequence) difference of melt in stove.
More specifically, existing tin smelting technology is all the process based on oxidizing semlting, retailoring.But specifically adopting in practice what equipment to realize oxidizing semlting, retailoring is most crucial problem in through engineering approaches application.The different choice of equipment has been determined to realize to the different technologies route (established technology) of oxidizing semlting, retailoring process, technological line will determine the advance of industrialized reliability, exploitativeness and technical indicator.The selection (being the installation site of spray gun) of winding-up position is one of problem basic, the most most crucial in equipment selection, equipment design.When having selected side-blown or top blast, its smelting equipment (type of furnace) structure formation, spray gun structure, layout are diverse.
No matter to those skilled in the art, there is any technical problem in a kind of smelting device of basic forming, no matter it carried out to which kind of and improve, and this improvement all can not change the selection of its winding-up position.Therefore, to those skilled in the art, the change of Burners Positions is not conventional, an apparent selection.
And each metallic element has unique physical properties and chemical property.Therefore, smelt a kind of device of metal and technique without performing creative labour (change), can not be used for smelting another kind of metal.For example, the device of smelting tin and technique are different from smelting plumbous device and technique completely.That is to say, without performing creative labour (change), cannot utilize and smelt plumbous device and technique smelting tin.
Describe according to the bottom blowing tin metallurgy device 10 of the embodiment of the present invention below with reference to Fig. 1-Fig. 4.As Figure 1-Figure 4, comprise smelting furnace 101 and Bottom Blowing Ejection Gun 102 according to the bottom blowing tin metallurgy device 10 of the embodiment of the present invention.
In smelting furnace 101, have the first furnace chamber 1011, smelting furnace 101 has for adding the charging opening of material in the first furnace chamber 1011, for discharging the first slag notch 1013 of lean tin slag, for discharging the thick tin discharge outlet 1014 of thick tin, for discharging the first smoke outlet 1015 of flue gas and being located at the spray gun jack 1016 of the bottom of smelting furnace 101.Bottom Blowing Ejection Gun 102 is inserted in spray gun jack, and Bottom Blowing Ejection Gun 102 for being blown into oxygen-containing gas and fuel in the first furnace chamber 1011.
Describe and utilize the bottom blowing tin-making process of implementing according to the bottom blowing tin metallurgy device 10 of the embodiment of the present invention below with reference to Fig. 5.As shown in Figure 5, comprise the following steps according to the bottom blowing tin-making process of the embodiment of the present invention:
Stanniferous material is joined in the molten bath of the first furnace chamber 1011;
Utilize Bottom Blowing Ejection Gun 102 in the first furnace chamber 1011, to be blown into oxygen-containing gas and fuel from the bottom of the first furnace chamber 1011, to stanniferous material is carried out melting and produces thick tin and hardhead;
Reductive agent is joined in the first furnace chamber 1011, to utilize described reductive agent to reduce and obtain lean tin slag to described hardhead; With
Discharge thick tin from thick tin discharge outlet 1014, discharge lean tin slag from the first slag notch 1013.
According to the bottom blowing tin metallurgy device 10 of the embodiment of the present invention by utilizing Bottom Blowing Ejection Gun 102 to be blown into oxygen-containing gas and fuel in from the bottom of the first furnace chamber 1011 to the first furnace chamber 1011 to stanniferous material is blown, thereby can in single bottom blowing tin metallurgy device 10, can realize melting and reduction, at the interior realization blowing of the bottom blowing tin metallurgy device 10 of single sealing tin, therefore good seal performance, the feature of environmental protection is high.Not only can utilize fully thus the heat content of hardhead, in the time of reduction hardhead, only need to consume less fuel and carry out additional heat, and can greatly shorten the flow process of blowing tin, simplify blowing process of tin.
Therefore, according to the bottom blowing tin metallurgy device 10 of the embodiment of the present invention have that energy consumption is low, the advantage such as good seal performance, the feature of environmental protection are high, simple in structure, easy to operate.
Have according to the bottom blowing tin-making process of the embodiment of the present invention that technique is simple, energy consumption is low, the feature of environmental protection is high, level of automation advantages of higher.
As shown in Figure 1, in some embodiments of the invention, charging opening can comprise for example, for adding the first charging opening 10121 of stanniferous material (tin concentrate) in the first furnace chamber 1011, for adding the second charging opening 10122 of stanniferous flue dust and for add the 3rd charging opening 10123 of reductive agent in the first furnace chamber 1011 in the first furnace chamber 1011.Can make thus the structure of bottom blowing tin metallurgy device 10 more reasonable.
Advantageously, as shown in Figure 1, smelting furnace 101 is rotating cylindrical horizontal reactor.By rotating smelting furnace 101, can change easily and keep in repair Bottom Blowing Ejection Gun 102, and melt in emptying the first furnace chamber 1011 of the time of needing repairing.Thick tin discharge outlet 1014 can be located at the first end of cylindrical horizontal reactor, and the first smoke outlet 1015 can be close to the first end of cylindrical horizontal reactor, and the first slag notch 1013 can be located at the second end of cylindrical horizontal reactor.
As shown in Figure 1, bottom blowing tin metallurgy device 10 may further include bracket 103, backing ring 104, gear ring 105 and drive unit 106.Backing ring 104 is set on smelting furnace 101 and is rotatably supported on bracket 103.Gear ring 105 is set on the outside surface of smelting furnace 101.Drive unit 106 is connected with gear ring 105, to drive smelting furnace 101 to rotate by driving gear ring 105 to rotate.
Drive unit 106 for example can comprise motor, and the speed reduction unit being connected with motor can be installed gear on the output shaft of speed reduction unit, and gear engages to drive gear ring 105 to rotate with gear ring 105.Smelting furnace 101, under the drive of gear ring 105, rotates on bracket 103, because smelting furnace 101 can rotate, is convenient to change Bottom Blowing Ejection Gun 102 and other operations.
Stanniferous material can be joined in the first furnace chamber 1011 discontinuously, and thick tin and lean tin slag can be discharged discontinuously.Oxygen-containing gas and fuel can be continuously blown in the first furnace chamber 1011.Fuel can be selected from least one in fine coal, Sweet natural gas, coke-oven gas and producer gas.
Can also in the first furnace chamber 1011, add flux.Described flux can be the mixture of Wingdale, quartzite, quartzite and lime.Also can not add flux according to raw material condition.
The volumetric concentration of the oxygen of oxygen-containing gas can be 24%-60%.That is to say, the oxygen level of oxygen-containing gas is 24v%-60v%, and therefore, oxygen-containing gas is industrial oxygen or oxygen-rich air.
Described reductive agent can be beans.Those skilled in the art generally believe: utilize metallurgical coke can effectively reduce to hardhead as reductive agent.Contriver finds after performing creative labour through deep research: with utilize compared with metallurgical coke reduces to hardhead, utilize beans to reduce to hardhead, the tin content (the tin content in lean tin slag is less than or equal to 3wt%) in lean tin slag can be further reduced, thereby direct yield and the rate of recovery of tin can be further improved.Therefore, by utilizing beans as reductive agent, overcome technology prejudice, and can reduce costs.
In examples more of the present invention, bottom blowing tin metallurgy device 10 can also comprise waste heat boiler, described waste heat boiler can be connected with the first smoke outlet 1015, to utilize the heat in described waste heat boiler recovered flue gas, utilize described waste heat boiler to reclaim the heat in the flue gas that heat in the flue gas that melting produces and reduction produce.
Bottom blowing tin metallurgy device 10 can also comprise dust-precipitator (for example bagroom), described dust-precipitator can be connected with described waste heat boiler, to utilize the stanniferous flue dust in described dust-precipitator recovered flue gas, utilize described dust-precipitator to reclaim the stanniferous flue dust in the flue gas that stanniferous flue dust in the flue gas that melting produces and reduction produce, after then will stanniferous flue dust granulating, turn back in the first furnace chamber 1011.
Stanniferous flue dust can for example, join in the first furnace chamber 1011 by independent charging opening (the second charging opening 10122), also can join together with stanniferous material in the first furnace chamber 1011.In the time starting to start bottom blowing tin metallurgy device 10, owing to not producing stanniferous flue dust, therefore stanniferous material and flux can be joined in the first furnace chamber 1011.After stanniferous flue dust to be generated, stanniferous flue dust, stanniferous material and flux can be joined in the first furnace chamber 1011.
Bottom blowing tin metallurgy device 10 may further include water cooler, and described water cooler can be connected with described waste heat boiler and described dust-precipitator can be connected with described water cooler.
As shown in Figure 1, in one embodiment of the invention, described spray gun jack can be multiple and Bottom Blowing Ejection Gun 102 can be multiple, multiple described spray gun jacks can be formed on the bottom of smelting furnace 101 at interval, multiple Bottom Blowing Ejection Guns 102 can be inserted in multiple described spray gun jacks correspondingly, and a Bottom Blowing Ejection Gun 102 can be inserted in a described spray gun jack.Oxygen-containing gas and fuel can be blown in the first furnace chamber 1011 more equably thus.
It will be appreciated that, broad understanding should be made in the term " bottom " here, comprises any suitable position below the horizontal center line X of smelting furnace 101.Bottom Blowing Ejection Gun 102 can be located at below the horizontal center line X of smelting furnace 101.Preferably, Bottom Blowing Ejection Gun 102 can, near under smelting furnace 101, will be described in more detail below.
As shown in Fig. 2-Fig. 4, the angle α between Bottom Blowing Ejection Gun 102 and direction straight up can be at-120 degree to the scope of+120 degree ,-120 degree≤α≤+ 120 degree.In other words, the angle between the emission direction of Bottom Blowing Ejection Gun 102 and direction is straight up spent to the scopes of+120 degree-120.As shown in Fig. 2-Fig. 4, from the blowing direction of Bottom Blowing Ejection Gun 102 in the counterclockwise direction to the angle α of direction straight up for just, from the blowing direction of Bottom Blowing Ejection Gun 102 along clockwise direction to the angle α of direction straight up for negative.
More specifically, the angle α between Bottom Blowing Ejection Gun 102 and direction straight up can be at-60 degree to the scope of+60 degree ,-60 degree≤α≤+ 60 degree.Advantageously, the angle between Bottom Blowing Ejection Gun 102 and direction is straight up at-30 degree to the scope of+30 degree, and-30 degree≤α≤+ 30 are spent.Preferably, the angle between Bottom Blowing Ejection Gun 102 and direction is straight up at-20 degree to the scope of+20 degree, and-20 degree≤α≤+ 20 are spent.Can improve thus blowing effect.
In optional embodiment of the present invention, Bottom Blowing Ejection Gun 102 and be orthogonal to angle β between the axial direction (being the vertical direction in Fig. 1) of smelting furnace 101 at-30 degree to the scopes of+30 degree.More preferably, angle β is 0 degree, and Bottom Blowing Ejection Gun 102 is vertically directed.Wherein, vertical direction is as shown in the arrow A in Fig. 1.
In order to improve the life-span of Bottom Blowing Ejection Gun 102, between the periphery of Bottom Blowing Ejection Gun 102 and smelting furnace 101, be provided with gas permeable brick or the first watercooling jacket.Gas permeable brick can carry out cooling and can improve the mobility of the melt in the first furnace chamber 1011 Bottom Blowing Ejection Gun 102, improves blowing effect.
Optionally, can be by gas permeable brick to the interior injection nitrogen of the first furnace chamber 1011, cooling Bottom Blowing Ejection Gun 102 and stir better the melt in the first furnace chamber 1011 better.In the time that watercooling jacket is set, watercooling jacket leads to water coolant, carries out cooling to Bottom Blowing Ejection Gun 102.
Preferably, the slag blanket region of the first furnace chamber 1011 is provided with the second watercooling jacket.Can further extend thus the work-ing life of smelting furnace 101.Preferably, the first and second watercooling jackets are copper water jacket.Than traditional molten steel cover, copper water jacket has the advantage such as good cooling results, long service life.
As shown in Figure 6, further comprise fuming furnace 103 and side-blown spray gun 104 according to the bottom blowing tin metallurgy device 10 of the embodiment of the present invention.In fuming furnace 103, have the second furnace chamber 1031, fuming furnace 103 has for adding the heat material mouth 1032 of liquid lean tin slag in the second furnace chamber 1031, for adding the cold burden mouth 1033 of vulcanizing agent in the second furnace chamber 1031, for discharging the second smoke outlet 1034 of flue gas, for discharging the second slag notch 1035 and the side-blown spray gun jack of waste.Side-blown spray gun 104 is inserted in described side-blown spray gun jack, and side-blown spray gun 104 for being blown into oxygen-containing gas and fuel in the second furnace chamber 1031.
Further comprise according to the bottom blowing tin-making process of the embodiment of the present invention:
Liquid lean tin slag is joined in the second furnace chamber 1031 from heat material mouth 1032, and vulcanizing agent is joined in the second furnace chamber 1031 from cold burden mouth 1033;
Utilize side-blown spray gun 104 in the second furnace chamber 1031, to be blown into oxygen-containing gas and fuel from the side of the second furnace chamber 1031, to lean tin slag is vulcanized and produces waste; With
Discharge waste from the second slag notch 1035.
Particularly, the liquid lean tin slag that smelting furnace 101 retailoring produce is from bottom convertor slag notch 1013 is discharged, can hang or the mode of chute direct current joins in the second furnace chamber 1031 from heat material mouth 1032 through steamed stuffed bun, and vulcanizing agent is joined in the second furnace chamber 1031 from cold burden mouth 1033, side-blown spray gun 104 is blown into oxygen-containing gas and fuel (for example fine coal) in the second slag notch 1035.Fuel combustion to keep being weakly reducing atmosphere in the second furnace chamber 1031, is blown, to accelerate chemical reaction and volatilization under high temperature and intense agitation.The stannous sulfide evaporating is oxidized to stannic oxide in flue, through waste heat boiler and follow-up dust collecting system, obtains enrichment with the form of stanniferous flue dust, and stanniferous flue dust can return in the first furnace chamber 1011 and carry out melting.The waste that fuming furnace 103 produces can be discharged from the second slag notch 1035 of the second furnace chamber 1031.Particularly, waste can be discharged from the second slag notch 1035 of the second furnace chamber 1031 termly.
In a concrete example of the present invention, solid-state stanniferous material can also be joined in the second furnace chamber 1031 from cold burden mouth 1033, to regulate the temperature in the second furnace chamber 1031.Particularly, described solid-state stanniferous material comprises at least one in lean tin slag and medium tin ore.
Be according to the bottom blowing tin metallurgy device 10 of the embodiment of the present invention and the technical superiority of bottom blowing tin-making process:
1, energy consumption is low: realized the fusion process from tin material to thick tin a stove the inside, fusion process adopts industrial oxygen (carrier of oxygen volume concentrations 30%-100%), exhaust gas volumn is few, dust rate is low, adopt broken coal (beans) as reductive agent, do not need relatively costly metallurgical coke, simultaneously the waste heat in recovered flue gas.
2, environmental protection is good: tin concentrate fusion process carries out in an airtight body of heater 101, avoid flue gas to escape, tin concentrate or other tin raw material coordinate granulate after directly into stove, material preparation process is simple, in production process, the tin flue dust of output all seals and carries and return batching, has effectively prevented the disperse of tin dirt; The flue gas of melting output, after waste heat recovery and gathering dust, send desulphurization system.The thick tin of bottom convertor output is discharged from tin discharge outlet, and the lean tin slag of output is discharged from the first slag notch, establishes ventilating chamber at tin discharge outlet and slag notch simultaneously, prevents the diffusion of tin steam.Substantially solved the problem of tin flue gas during smelting, tin dust pollution.
3, the rate of recovery is high: in bottom blowing tin metallurgy stove, fusion process adopts industrial oxygen, uses broken coal effectively to reduce exhaust gas volumn and dust rate, reduced the tin content in lean tin slag as reductive agent, has improved direct yield and the rate of recovery of tin.
4, bottom blowing sn smelting method is in all tin metallurgy methods, comprises material preparation system, the technique that flow process is the shortest, and process unit is simple, reduced investment.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of instructions such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, at least one this feature can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is at least two, for example two, and three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless separately there is clear and definite restriction.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, First Characteristic Second Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, specific features, structure, material or the feature of description can one or more embodiment in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiment that describe in this specification sheets or example and different embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, amendment, replacement and modification.
Claims (10)
1. a bottom blowing tin-making process that utilizes bottom blowing tin metallurgy device to implement, is characterized in that,
Described bottom blowing tin metallurgy device comprises:
Smelting furnace, in described smelting furnace, have the first furnace chamber, described smelting furnace has for adding the charging opening of material in described the first furnace chamber, for discharging the first slag notch of lean tin slag, for discharging the thick tin discharge outlet of thick tin, for discharging the first smoke outlet of flue gas and being located at the spray gun jack of the bottom of described smelting furnace; With
Bottom Blowing Ejection Gun, described Bottom Blowing Ejection Gun is inserted in described spray gun jack, for be blown into oxygen-containing gas and fuel in described the first furnace chamber;
Described bottom blowing tin-making process comprises the following steps:
Stanniferous material and flux are joined in the molten bath of described the first furnace chamber;
Utilize described Bottom Blowing Ejection Gun in described the first furnace chamber, to be blown into oxygen-containing gas and fuel from the bottom of described the first furnace chamber, to stanniferous material is carried out melting and produces thick tin and hardhead;
Reductive agent is joined in described the first furnace chamber, to utilize reductive agent to reduce and obtain lean tin slag to described hardhead; With
Discharge thick tin from described thick tin discharge outlet, discharge lean tin slag from described the first slag notch.
2. bottom blowing tin-making process according to claim 1, is characterized in that, described oxygen-containing gas and described fuel are continuously blown in described furnace chamber.
3. bottom blowing tin-making process according to claim 1, is characterized in that, described stanniferous material and being joined discontinuously in described furnace chamber, and described thick tin and described lean tin slag are discharged discontinuously.
4. bottom blowing tin-making process according to claim 1, is characterized in that, further comprises:
Utilize waste heat boiler reclaim melting produce flue gas in heat and reduction produce flue gas in heat; With
Utilize dust-precipitator reclaim melting produce flue gas in stanniferous flue dust and reduction produce flue gas in stanniferous flue dust, through granulate after turn back in described furnace chamber.
5. according to the bottom blowing tin-making process described in any one in claim 1-4, it is characterized in that, the volumetric concentration of the oxygen of described oxygen-containing gas is 24%-60%.
6. according to the bottom blowing tin-making process described in any one in claim 1-4, it is characterized in that, described fuel is selected from least one in fine coal, Sweet natural gas, coke-oven gas and producer gas.
7. according to the bottom blowing tin-making process described in any one in claim 1-4, it is characterized in that, described reductive agent is beans.
8. bottom blowing tin-making process according to claim 1, is characterized in that, described bottom blowing tin metallurgy device further comprises:
Fuming furnace, in described fuming furnace, have the second furnace chamber, described fuming furnace has for adding the heat material mouth of liquid lean tin slag in described the second furnace chamber, for adding the cold burden mouth of vulcanizing agent in described the second furnace chamber, for discharging the second smoke outlet of flue gas, for discharging the second slag notch and the side-blown spray gun jack of waste; With
Side-blown spray gun, described side-blown spray gun is inserted in described side-blown spray gun jack, for be blown into oxygen-containing gas and fuel in described the second furnace chamber;
Described bottom blowing tin-making process further comprises:
Liquid lean tin slag is joined in described the second furnace chamber from described heat material mouthful, and vulcanizing agent is joined in described the second furnace chamber from described cold burden mouth;
Utilize described side-blown spray gun in described the second furnace chamber, to be blown into oxygen-containing gas and fuel from the side of described the second furnace chamber, to lean tin slag is vulcanized and produces waste; With
Discharge waste from described the second slag notch.
9. bottom blowing tin-making process according to claim 8, is characterized in that, further comprises: solid-state stanniferous material is joined in described the second furnace chamber from described cold burden mouth.
10. bottom blowing tin-making process according to claim 9, is characterized in that, described solid-state stanniferous material comprises at least one in lean tin slag and medium tin ore.
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| CN201410337214.8A CN104152715B (en) | 2014-05-13 | 2014-07-15 | Bottom blowing tin-making process |
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Cited By (3)
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| CN106636659A (en) * | 2016-10-17 | 2017-05-10 | 中国有色集团（广西）平桂飞碟股份有限公司 | Method for smelting tin from tin smelting powder residue |
| CN107201449A (en) * | 2017-06-08 | 2017-09-26 | 安徽省金鸿再生资源科技有限公司 | A kind of method that waste residue containing slicker solder reclaims tin |
| CN111961840A (en) * | 2020-09-01 | 2020-11-20 | 云南锡业股份有限公司锡业分公司 | Roasting treatment process of high-As high-S tin concentrate in fluidized bed roaster |
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| CN108251660A (en) * | 2018-02-02 | 2018-07-06 | 赣州市赤鼎再生资源有限公司 | A kind of method of stanniferous abandoned mine material recycling tin |
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| CN106636659A (en) * | 2016-10-17 | 2017-05-10 | 中国有色集团（广西）平桂飞碟股份有限公司 | Method for smelting tin from tin smelting powder residue |
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| CN107201449B (en) * | 2017-06-08 | 2018-06-08 | 安徽省金鸿再生资源科技有限公司 | A kind of method of the recycling of waste residue containing slicker solder tin |
| CN111961840A (en) * | 2020-09-01 | 2020-11-20 | 云南锡业股份有限公司锡业分公司 | Roasting treatment process of high-As high-S tin concentrate in fluidized bed roaster |
| CN111961840B (en) * | 2020-09-01 | 2021-11-23 | 云南锡业股份有限公司锡业分公司 | Roasting treatment process of high-As high-S tin concentrate in fluidized bed roaster |
Also Published As
| Publication number | Publication date |
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| CN104152715B (en) | 2016-08-24 |
| CN104060104B (en) | 2016-04-13 |
| CN104060104A (en) | 2014-09-24 |
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