CN104073654A - Side-blowing tin smelting technique - Google Patents
Side-blowing tin smelting technique Download PDFInfo
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- CN104073654A CN104073654A CN201410294427.7A CN201410294427A CN104073654A CN 104073654 A CN104073654 A CN 104073654A CN 201410294427 A CN201410294427 A CN 201410294427A CN 104073654 A CN104073654 A CN 104073654A
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Abstract
The invention relates to a side-blowing tin smelting technique. The technique comprises the following steps: adding a stannous material, a fluxing agent and a reducer into a furnace chamber of a reaction furnace; spraying an oxygen-containing gas and a fuel into the furnace chamber from the side of the furnace chamber, thereby carrying out reduction smelting on the stannous material and obtaining first crude tin and tin-rich slag; discharging the first crude tin; adding a reducer into the furnace chamber of the reaction furnace, spraying the oxygen-containing gas and fuel into the furnace chamber from the side of the furnace chamber, thereby carrying out strong reduction smelting on the tin-rich slag and obtaining second crude tin and tin-deficient slag; and discharging the second crude tin. The technique provided by the embodiment of the invention has the advantages of simple process, low energy consumption, high environment-friendliness, high automation degree, high direct yield and the like.
Description
Technical field
The present invention relates to a kind of side-blown 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 is because investment, management and maintenance cost are high, exhaust gas volumn is large, and direct yield is low to be eliminated already.Kaldo Furnace device structure is complicated, and maintenance cost is high, and the stove longevity is short, and refractory consumption rate is large.Reverberatory furnace, due to shortcomings such as its production efficiency 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; 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 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, level of automation is high, the side-blown tin-making process of direct yield advantages of higher.
According to the side-blown tin-making process of the embodiment of the present invention, comprise the following steps: stanniferous material, flux and reductive agent are joined in the furnace chamber of Reaktionsofen, oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to stanniferous material is carried out retailoring and obtains the first thick tin and hardhead, then discharge the described first thick tin; With reductive agent is joined in the furnace chamber of Reaktionsofen, and oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to described hardhead is carried out strong retailoring and obtains the second thick tin and lean tin slag, then discharge the described second thick tin.
According to the side-blown tin-making process of the embodiment of the present invention by the hardhead obtaining after retailoring is carried out to strong retailoring, thereby can in single side-blown tin metallurgy device, realize retailoring and strong retailoring, can in the side-blown tin metallurgy device of single sealing, realize blowing tin.Not only can utilize fully thus the heat content of described hardhead, and can greatly shorten the flow process of smelting tin, improve the direct yield of retailoring tin, simplified side blowing process of tin.
Therefore, according to the side-blown tin-making process of the embodiment of the present invention, have that technique is simple, energy consumption is low, the feature of environmental protection is high, level of automation is high, direct yield advantages of higher.
In addition, side-blown tin-making process according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, described side-blown tin-making process further comprises: vulcanizing agent is joined in described furnace chamber, and oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to described lean tin slag is carried out sulfiding volatilization and obtains tailings, then discharge described tailings.
According to one embodiment of present invention, described vulcanizing agent is joined in described furnace chamber discontinuously, and described tailings is discharged discontinuously, and described vulcanizing agent is pyrite.
According to one embodiment of present invention, the stanniferous amount of described tailings is less than or equal to 0.3wt%.
According to one embodiment of present invention, each in the described first thick tin and the described second thick tin is all discharged discontinuously.
According to one embodiment of present invention, the stanniferous amount of described hardhead is less than or equal to 15wt%, and the stanniferous amount of described lean tin slag is less than or equal to 5wt%.
According to one embodiment of present invention, described side-blown tin-making process further comprises: from the sidewall of the smoke outlet of described furnace chamber, to described smoke outlet, carry air, so that the combustiblematerials in combustion product gases.
According to one embodiment of present invention, the volumetric concentration of the oxygen of described oxygen-containing gas is 30%-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.
Accompanying drawing explanation
Fig. 1 is according to the schema of the side-blown tin-making process of the embodiment of the present invention;
Fig. 2 is the structural representation of side-blown tin metallurgy device according to an embodiment of the invention;
Fig. 3 is the structural representation of side-blown tin metallurgy device according to another embodiment of the 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.Below by the embodiment being described with reference to the drawings, be exemplary, 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 utility model, 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 retailoring.But specifically adopting in practice what equipment to realize 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 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 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), for example, cannot utilize and smelt plumbous device and technique smelting tin.
Below with reference to Fig. 1, describe according to the side-blown tin-making process of the embodiment of the present invention.As shown in Figure 1, according to the side-blown tin-making process of the embodiment of the present invention, comprise the following steps:
Stanniferous material, flux and reductive agent are joined in the furnace chamber of Reaktionsofen, and oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to stanniferous material is carried out retailoring and obtains the first thick tin and hardhead, then discharge the described first thick tin; With
Reductive agent is joined in the furnace chamber of Reaktionsofen, and oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to described hardhead is carried out strong retailoring and obtains the second thick tin and lean tin slag, then discharge the described second thick tin.
According to the side-blown tin-making process of the embodiment of the present invention by the hardhead obtaining after retailoring is carried out to strong retailoring, thereby can in single side-blown tin metallurgy device, realize retailoring and strong retailoring, can in the side-blown tin metallurgy device of single sealing, realize blowing tin.Not only can utilize fully thus the heat content of described hardhead, and can greatly shorten the flow process of smelting tin, improve the direct yield of retailoring tin, simplified side blowing process of tin.
Therefore, according to the side-blown tin-making process of the embodiment of the present invention, have that technique is simple, energy consumption is low, the feature of environmental protection is high, level of automation is high, direct yield advantages of higher.
Advantageously, each in the described first thick tin and the described second thick tin is all discharged (furnace chamber) discontinuously.Not only can make thus described retailoring and described strong retailoring more stably carry out, and further operation, the reduction of simplified side blowing process of tin are invested, improved operating condition, reduced middle slag discharge operation, improved operating environment.
Described lean tin slag can be discharged from, and then in conventional fuming furnace, processes.
In some embodiments of the invention, according to the side-blown tin-making process of the embodiment of the present invention, may further include: vulcanizing agent is joined in described furnace chamber, and oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to described lean tin slag is carried out sulfiding volatilization and obtains waste, then discharge described waste.
According to the side-blown tin-making process of the embodiment of the present invention by the lean tin slag obtaining after described strong retailoring is carried out to sulfiding volatilization, thereby can in single side-blown tin metallurgy device, realize retailoring, strong retailoring and sulfiding volatilization, can in the side-blown tin metallurgy device of single sealing, realize blowing tin.Not only can utilize fully thus the heat content of described hardhead and described lean tin slag, and can greatly shorten the flow process of smelting tin, multi-use, has improved the direct yield of retailoring tin, simplified side blowing process of tin.
Therefore, according to the side-blown tin-making process of the embodiment of the present invention, have that technique is simple, energy consumption is low, the feature of environmental protection is high, level of automation is high, direct yield advantages of higher.
Particularly, described vulcanizing agent can be joined in described furnace chamber discontinuously, and described waste can be discharged discontinuously.
Wherein, the stanniferous amount of described hardhead is less than or equal to 15wt%, and the stanniferous amount of described lean tin slag is less than or equal to 5wt%, and the stanniferous amount of described waste is less than or equal to 0.3wt%.
In existing Metal smelting technique, be all, on the sidewall (sidewall of furnace chamber is different from the wall of smoke outlet) at furnace chamber, tertiary air orifice is set, to utilize the combustiblematerials the air combustion flue gas of carrying from tertiary air orifice.
But after contriver in depth studies, creatively find: from the sidewall of smoke outlet, to described smoke outlet, carry air, the more fully combustiblematerials in combustion product gases.In a concrete example of the present invention, according to the side-blown tin-making process of the embodiment of the present invention, further comprise: from the sidewall of the smoke outlet of described furnace chamber, to described smoke outlet, carry air, so that the combustiblematerials in combustion product gases.That is to say, flue gas can described retailoring, produce in described strong retailoring and sulfiding volatilization process.Combustiblematerials in combustion product gases more fully thus, thus the feature of environmental protection of described side-blown tin-making process further improved.
The volumetric concentration of the oxygen of described oxygen-containing gas is 30%-65%.That is to say, the oxygen level of described oxygen-containing gas is 30v%-65v%, 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 to stanniferous material and hardhead, reduce as reductive agent.Contriver finds after performing creative labour through deep research: with utilizing metallurgical coke, stanniferous material is reduced and compared with hardhead, utilize beans to reduce to stanniferous material and hardhead, the tin content (the stanniferous amount of described lean tin slag is less than or equal to 5wt%) 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.
Advantageously, the particle diameter of beans can be less than or equal to preset value.
Described fuel can be selected from least one in fine coal, Sweet natural gas, coke-oven gas and producer gas.
Described flux can be the mixture of Wingdale, quartzite or quartzite and lime.
Described vulcanizing agent can be pyrite.
The present invention also provides a kind of side-blown tin metallurgy device 10.Below with reference to Fig. 2, describe according to the side-blown tin metallurgy device 10 of the embodiment of the present invention.As shown in Figure 2, according to the side-blown tin metallurgy device 10 of the embodiment of the present invention, comprise Reaktionsofen 101, side-blown spray gun 102.
In Reaktionsofen 101, have furnace chamber 1011, the wall of furnace chamber 1011 is provided with charging opening 1012, slag notch 1013 and puts tin mouth 1014, and the roof of furnace chamber 1011 is provided with for discharging the smoke outlet 1016 of flue gas.Side-blown spray gun 102 is located on the sidewall of furnace chamber 1011 to oxygen-containing gas and fuel-side are blown in furnace chamber 1011.
Can be for implementing side-blown tin-making process according to the above embodiment of the present invention according to the side-blown tin metallurgy device 10 of the embodiment of the present invention.
According to the side-blown tin metallurgy device 10 of the embodiment of the present invention, can in single side-blown tin metallurgy device 10, can realize the sulfiding volatilization of retailoring, strong retailoring and lean tin slag, at the interior blowing tin of having realized of side-blown tin metallurgy device 10 of single sealing, so good seal performance, the feature of environmental protection is high.Not only can utilize fully thus the heat content of hardhead, and can greatly shorten the flow process of smelting tin, improve the direct yield of retailoring tin, simplified side blowing tin device and technique.
Therefore, according to the side-blown 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.
As shown in Figure 2, in furnace chamber 1011, L1 is the liquid level of hardhead and lean tin slag, the liquid level that L2 is thick tin.Particularly, when carrying out retailoring, the liquid level that L1 is hardhead, when carrying out strong retailoring, L1 is the liquid level of lean tin slag.The molten bath of furnace chamber 1011 is used for holding the first thick tin, the second thick tin, hardhead, lean tin slag and waste.
In a concrete example of the present invention, as shown in Figure 2, Reaktionsofen 101 can be horizontal chamber oven.Particularly, Reaktionsofen 101 can be the fixedly horizontal chamber oven of long ellipse shape or rectangle.The diapire of furnace chamber 1011 can be recessed arc.
As shown in Figure 2, charging opening 1012 is located on the sidewall of furnace chamber 1011, puts on the sidewall that tin mouth 1014 is located at furnace chamber 1011, and slag notch 1013 is located on the sidewall of furnace chamber 1011.The structure of tin metallurgy device 10 of can making thus to blow side is more reasonable.
Advantageously, put the diapire that tin mouth 1014 can be close to furnace chamber 1011.Can discharge more rapidly, more up hill and dale thus the first thick tin and the second thick tin.
Put the first end that tin mouth 1014 is positioned at furnace chamber 1011, slag notch 1013 is positioned at the second end of furnace chamber 1011, and wherein the first end of furnace chamber 1011 is relative with the second end of furnace chamber 1011.The structure of tin metallurgy device 10 of can making thus to blow side is more reasonable.
The sidewall of furnace chamber 1011 is provided with gun slot, and side-blown spray gun 102 is located in described gun slot.Thus side-blown spray gun 102 can more easily, be firmly installed.
Particularly, the end of side-blown spray gun 102 can be positioned at described gun slot, and described gun slot also can be stretched out in the end of side-blown spray gun 102, and the end of side-blown spray gun 102 can extend in furnace chamber 1011.
As shown in Figure 2, more specifically, side-blown spray gun 102 can be injected to oxygen-containing gas and fuel on the liquid level L2 of thick tin of furnace chamber 1011 and under the liquid level L1 of described hardhead (described lean tin slag).In other words, side-blown spray gun 102 can be injected to oxygen-containing gas and fuel in the hardhead and lean tin slag in furnace chamber 1011.That is to say, described gun slot is positioned on the liquid level L2 of thick tin of furnace chamber 1011 and under the liquid level L1 of described hardhead (described lean tin slag).
Particularly, side-blown spray gun 102 (described gun slot) can be located on the sidewall of bottom of furnace chamber 1011.
As shown in Figure 2, in an example of the present invention, side-blown spray gun 102 is a plurality of, and a plurality of side-blown spray guns 102 are located on the sidewall of furnace chamber 1011 at interval along the length direction of Reaktionsofen 101.The structure of tin metallurgy device 10 of can making thus to blow side is more reasonable.Wherein, the length direction of Reaktionsofen 101 is as shown in the arrow A in Fig. 2 and Fig. 3.
Stanniferous material, flux and reductive agent join in furnace chamber 1011 from charging opening 1012, utilize side-blown spray gun 102 to spray into oxygen-containing gas and fuel in furnace chamber 1011, to stanniferous material is carried out retailoring and obtains the first thick tin and hardhead.Then, reductive agent is joined in the furnace chamber of Reaktionsofen, and utilize side-blown spray gun 102 to spray into oxygen-containing gas and fuel in furnace chamber 1011, to hardhead is carried out strong retailoring and obtains the second thick tin and lean tin slag.Finally, vulcanizing agent is joined in furnace chamber 1011 from charging opening 1012, utilize side-blown spray gun 102 to spray into oxygen-containing gas and fuel in furnace chamber 1011, to the tin in lean tin slag is carried out sulfiding volatilization and obtains waste.
It will be appreciated that, by controlling straying quatity, the part of fuel that side-blown spray gun 102 sprays into also can be used as reductive agent and reduce stanniferous material and hardhead together with the reductive agent adding.
The described first thick tin and the described second thick tin can regularly be discharged furnace chamber 1011 from putting tin mouth 1014.Described waste (being the slag that described lean tin slag cures and produces after volatilization in furnace chamber 1011) is regularly discharged furnace chamber 1011 from slag notch 1013.
In existing Metal smelting technique, be all, on the sidewall (sidewall of furnace chamber is different from the wall of smoke outlet) at furnace chamber, tertiary air orifice is set, to utilize the combustiblematerials the air combustion flue gas of carrying from tertiary air orifice.
But after contriver in depth studies, creatively find: by tertiary air orifice 1015 is set on the sidewall at smoke outlet 1016, thereby can to smoke outlet 1016, carry air, the more fully combustiblematerials in combustion product gases from the sidewall of smoke outlet 1016.Combustiblematerials in combustion product gases more fully thus, thus further improve according to the feature of environmental protection of the side-blown tin metallurgy device 10 of the embodiment of the present invention.
Charging opening 1012 places are provided with sanitary ventilation chamber and dust-removal system, to prevent the excessive of flue gas and dust.Slag notch 1013 places are provided with sanitary ventilation chamber and dust-removal system, to prevent the excessive of flue gas and dust.Put tin mouth 1014 places and be provided with sanitary ventilation chamber and dust-removal system, to prevent the excessive of flue gas and dust.
As shown in Figure 3, in examples more of the present invention, side-blown tin metallurgy device 10 can also comprise waste heat boiler 102, and waste heat boiler 102 has vertical uplift section 1021, vertical uplift section 1021 is integrally formed with Reaktionsofen 101, and vertical uplift section 1021 is connected with smoke outlet 1016.Can utilize thus waste heat boiler 102 to reclaim the heat in the flue gas that retailoring, strong retailoring and sulfiding volatilization process produce.And, by vertical uplift section 1021 and Reaktionsofen 101 are integrally formed, thereby can prevent that flue dust is bonding, so that the tin metallurgy device 10 that can make to blow side can steady in a long-term move.
Particularly, have cavity 10211 in vertical uplift section 1021, cavity 10211 is communicated with smoke outlet 1016.
Side-blown tin metallurgy device 10 also comprises dust-precipitator (for example bagroom), described dust-precipitator can be connected with described waste heat boiler, to utilize described dust-precipitator to reclaim the stanniferous flue dust in the flue gas that retailoring, strong retailoring and sulfiding volatilization process produce.
Side-blown 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.
Wherein, stanniferous flue dust can join in furnace chamber 1011.When starting to start side-blown tin metallurgy device 10, owing to not producing stanniferous flue dust, therefore stanniferous material and flux can be joined in furnace chamber 1011.After stanniferous flue dust to be generated, stanniferous flue dust, stanniferous material and flux can be joined in furnace chamber 1011.
According to the side-blown tin metallurgy device 10 of the embodiment of the present invention, can realize regular tin metallurgy, regularly arrange tin and regular deslagging.
According to the technical superiority of the side-blown tin metallurgy device 10 of the embodiment of the present invention and side-blown tin-making process, be:
1, energy consumption is low: in stove the inside, realized fusion process from tin material to thick tin and the sulfiding volatilization process of lean tin slag, 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, reclaim the waste heat in retailoring, strong retailoring and sulfiding volatilization process flue gas simultaneously.
2, environmental protection is good: tin concentrate fusion process carries out in an airtight Reaktionsofen 101, avoided 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 and sulfiding volatilization output, after waste heat recovery and gathering dust, send desulphurization system.The thick tin of side-blown converter retailoring section and strong retailoring section output is discharged from putting Xi Kou, and the waste of sulfiding volatilization output is discharged from slag notch, simultaneously at charging opening, put Xi Kou and slag notch is established ventilating chamber, prevent 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 side-blown tin metallurgy stove, owing to having utilized fully the heat content of slag, fusion process adopts industrial oxygen, and uses beans to effectively reduce exhaust gas volumn and dust rate, reduced the tin content in slag as reductive agent, has improved direct yield and the rate of recovery of tin.
4, side-blown 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 indications 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, rather than device or the element of indication 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 indication 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 " a plurality of " 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 be integral; Can be mechanical connection, can be to be also electrically connected to; 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, the specific features of description, structure, material or feature 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, modification, replacement and modification.
Claims (10)
1. a side-blown tin-making process, is characterized in that, comprises the following steps:
Stanniferous material, flux and reductive agent are joined in the furnace chamber of Reaktionsofen, oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to stanniferous material is carried out retailoring and obtains the first thick tin and hardhead, then discharge the described first thick tin; With
Reductive agent is joined in the furnace chamber of Reaktionsofen, and oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to described hardhead is carried out strong retailoring and obtains the second thick tin and lean tin slag, then discharge the described second thick tin.
2. side-blown tin-making process according to claim 1, it is characterized in that, further comprise: vulcanizing agent is joined in described furnace chamber, and oxygen-containing gas and fuel are sprayed in described furnace chamber from the side of described furnace chamber, to described lean tin slag is carried out sulfiding volatilization and obtains tailings, then discharge described tailings.
3. side-blown tin-making process according to claim 2, is characterized in that, described vulcanizing agent is joined in described furnace chamber discontinuously, and described tailings is discharged discontinuously, and described vulcanizing agent is pyrite.
4. side-blown tin-making process according to claim 2, is characterized in that, the stanniferous amount of described tailings is less than or equal to 0.3wt%.
5. side-blown tin-making process according to claim 1, is characterized in that, each in the described first thick tin and the described second thick tin is all discharged discontinuously.
6. side-blown tin-making process according to claim 1, is characterized in that, the stanniferous amount of described hardhead is less than or equal to 15wt%, and the stanniferous amount of described lean tin slag is less than or equal to 5wt%.
7. side-blown tin-making process according to claim 1, is characterized in that, further comprises: from the sidewall of the smoke outlet of described furnace chamber, to described smoke outlet, carry air, so that the combustiblematerials in combustion product gases.
8. according to the side-blown tin-making process described in any one in claim 1-7, it is characterized in that, the volumetric concentration of the oxygen of described oxygen-containing gas is 30%-60%.
9. according to the side-blown tin-making process described in any one in claim 1-7, it is characterized in that, described fuel is selected from least one in fine coal, Sweet natural gas, coke-oven gas and producer gas.
10. according to the side-blown tin-making process described in any one in claim 1-7, it is characterized in that, described reductive agent is beans.
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| CN201410294427.7A CN104073654A (en) | 2014-06-25 | 2014-06-25 | Side-blowing tin smelting technique |
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| CN201410294427.7A Pending CN104073654A (en) | 2014-06-25 | 2014-06-25 | Side-blowing tin smelting technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108611492A (en) * | 2018-04-17 | 2018-10-02 | 安徽华铂再生资源科技有限公司 | A kind of technique that thick tin is smelted in the press filtration solids from sodium stannate solution |
| CN109852818A (en) * | 2019-04-02 | 2019-06-07 | 柳州光华科技有限公司 | A kind of continuous side-blown tin-making process |
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| CN101906540A (en) * | 2010-07-21 | 2010-12-08 | 杨龙安 | Solder splash side blowing molten pool smelting furnace cold metal direct making fuming volatilization method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108611492A (en) * | 2018-04-17 | 2018-10-02 | 安徽华铂再生资源科技有限公司 | A kind of technique that thick tin is smelted in the press filtration solids from sodium stannate solution |
| CN109852818A (en) * | 2019-04-02 | 2019-06-07 | 柳州光华科技有限公司 | A kind of continuous side-blown tin-making process |
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