CN103420343A - Continuous sulfur heating melting pool - Google Patents
Continuous sulfur heating melting pool Download PDFInfo
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- CN103420343A CN103420343A CN2013103715938A CN201310371593A CN103420343A CN 103420343 A CN103420343 A CN 103420343A CN 2013103715938 A CN2013103715938 A CN 2013103715938A CN 201310371593 A CN201310371593 A CN 201310371593A CN 103420343 A CN103420343 A CN 103420343A
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- melting pool
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- sulfur melting
- sulphur
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Abstract
The invention discloses a continuous sulfur heating melting pool. The continuous sulfur heating melting pool comprises a closed sulfur melting pool body, wherein the feeding end of the sulfur melting pool body is provided with a feeding opening, steam coil heaters are arranged at the periphery of the inner wall of the sulfur melting pool body in a surrounding mode, and steam coil heaters are further arranged at the periphery of the feeding opening, or a steam coil heater is further arranged on at least one face of the periphery of the feeding opening so that the feeding opening can be surrounded by the steam coil heater and the steam coil heaters on the inner wall of the sulfur melting pool body. Stirrers are arranged at the periphery of the feeding opening and the area surrounded by the steam coil heaters. Sulfur residues are directly added to the closed sulfur melting pool body, elemental sulfur in the sulfur residues is heated to melt through the steam coil heaters and the stirrers according to the temperature of melting coarse sulfur in the closed sulfur melting pool body, and the temperature of melting the coarse sulfur in the closed sulfur melting pool body is provided through indirect heating of steam coils. The continuous sulfur heating melting pool has the advantages of being small in occupied space of the configuration, capable of well protecting the environment, capable of saving energy, low in labor intensity, small in number of procedures of the technological process, good in processing capacity, simple in production operation, capable of processing the sulfur residues with high sulfur content and the like.
Description
Technical field
The invention belongs to technical field of non-ferrous metallurgy, be specifically related to a kind of Continuous Heat sulfur melting pool.
Background technology
Generally, anode slime of nickel sulfide electrolysis contains elemental sulfur up to more than 80%, zinc oxygen presses the sulphur concentrate that leaches underflow flotation output to reach more than 75% containing elemental sulfur, in industrial production, utilize elementary sulfur approximately being fused into liquid characteristics 120 ℃ the time, adopt the elemental sulfur in thermal fusion process fusing sulphur slag, and control temperature wherein, make its mobility better, at the sulphur wherein of Separation and Recovery in addition.In colored metallurgical industrial is produced, fusing at present has two kinds containing the production method of sulphur slag, and a kind of is to be interrupted hot sulfur melting method, and another kind is the Continuous Heat sulfur melting method
.
In being interrupted the hot melt sulfur process art, according to the type of heating difference, be divided into steam indirect heating and two kinds of molten sulphur methods of steam direct heating.
Steam indirect heating sulfur melting method is the melting process that indirect heating fusing sulphur slag completes elemental sulfur in the molten sulphur pot opened wide.Be provided with one group of steam coils and agitator in molten sulphur pot, be provided with steam jacket outward.During normal production, the slag that will contain sulphur is interrupted and adds in molten sulphur pot, steam provides heat to carry out the elemental sulfur in heat fused sulphur slag by steam coils and chuck indirectly, and the general control temperature is 130～140 ℃, and stirring can make the melting slag in pot conduct heat more even.When the sulphur slag in pot melts fully, be interrupted from pot bottom and discharge most of (65～75%) melting slag filtration, and then once add the fusing of sulphur slag, so circulation, realize the fusing of sulphur slag.
The steam direct heating sulfur melting method is to carry out in airtight reactor.Be provided with one group of steam direct heating pipe and stirring in reactor, still peripheral hardware steam jacket is for insulation or fusing.During normal production, the slag that will contain sulphur is interrupted and adds in reactor, directly passes into steam heating, the general control temperature is 140～150 ℃, start stirring during heat fused, after elemental sulfur melts fully, be incubated sedimentation, now stop stirring, difference according to density, elemental sulfur, slag and solution are not settlement separate respectively, then by discharging in still, and then once add the fusing of sulphur slag, so circulation, realize the fusing of sulphur slag.
Be interrupted in the production process of hot melt sulphur slag, because interruption is carried out, in reinforced and operating process, the gas inorganization escapes, and labor condition is poor; During discharge, the steam coils local temperature is too high, causes thermosteresis and sulfur speciation to change the poor fluidity that causes sulphur, is bonded on coil pipe, causes coil pipe cleaning work amount large.In a word, the method exists that energy consumption is high, environment protection is poor, the defect that hand labor intensity is large.
In the continuous melt sulfur process art, produce at present and adopt the continuous rapid melting technique of swirler.This process characteristic is that the direct blanking of sulphur slag enters the sulphur melting cyclone, after in thick sulphur pond, the thick sulphur of a certain amount of melting is sent into heater heats by recycle pump, constantly delivers in swirler.In swirler, the thick sulphur of solid sulfur slag and melting meets and carries out heat exchange, and fusing enters the elemental sulfur in the sulphur slag in swirler, from the swirler bottom, discharges, and enters in the airtight thick sulphur pond of band stirring.Thermal source in the hot melt process utilizes the steam indirect heating insulation of 650 ~ 800 kPa, controls temperature at 130～145 ℃.
With respect to being interrupted hot sulfur melting method, that the Continuous Heat sulfur melting method has is energy-conservation, environment protection good, the advantage that labour intensity is little that reaches is less taken up an area in configuration.But it is more late, newer that continuous melt sulphur law technology produces, at present mostly or adopt and be interrupted hot sulfur melting method, and the processing quantitative limitation of swirler in existing continuous sulfur melting processing unit, production capacity is restricted; And, when recycle pump can not run well, there is no adding of the thick sulphur of melting in swirler, and often cause the sulphur slag to stop up swirler taper feed opening, cause stopping production; In addition, little with the matching used thick sulphur of swirler pond useful volume, generally lower than per hour processing 30 times of sulphur slag volume, usually occur that water evaporation carries the phenomenon of elemental sulfur overflow (emitting groove) secretly, and there is no configuration agitator and the well heater of science in this thick sulphur pond, can not break away from swirler and melt separately sulphuring treatment.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, and a kind of Continuous Heat sulfur melting pool is provided, and can, by elemental sulfur fusing in the sulphur slag, reach with slag and separate, with recovery sulphur.
In order to achieve the above object, technical scheme provided by the invention is:
Described Continuous Heat sulfur melting pool comprises that feed end is provided with the airtight sulfur melting pool body of feed opening, and described sulfur melting pool inner body wall surrounding is equipped with the steam coils well heater; Described feed opening surrounding also is provided with the steam coils well heater; Perhaps the feed opening surrounding have at least the one side also be provided with the steam coils well heater make feed opening by the steam coils well heater on this steam coils well heater and sulfur melting pool inner body wall around; Around feed opening, by the steam coils well heater around zone in be provided with agitator.
Wherein, the heat exchange total area that is surrounded on the steam coils well heater of feed opening is 60%～70% of all steam coils well heaters of the sulfur melting pool body interior heat exchange total area.
The useful volume of described hot sulfur melting pool is the volume of per hour processing the sulphur slag 40～50 times.
The vapor pressure of described steam coils well heater is 650～800kPa, is preferably 650 kPa.
Described sulfur melting pool body discharge end is provided with thick sulphur filtration pump.
Described agitator is three leaf propeller mixers.Agitator speed is 80～120n/min, is preferably 100 n/min.
Described sulfur melting pool body liner acid resisting brick.
Below in conjunction with principle of design, technique and effect, the invention will be further described:
In Continuous Heat sulfur melting pool of the present invention, be provided with agitator around feed opening, agitator is set like this can make the solid sulfur slag added not pile up, make in pond not slag not deposit, be conducive to the thick sulphur of solid sulfur slag and melting and evenly mix and effectively heat exchange, contribute to the fusing of solid sulfur slag.
The sulphur slag melts needed heat and maintains the sulfur melting pool temperature at 130～145 ℃ of needed heats, the steam coils indirect heating that is all 650～800kPa by pressure is supplied with, in the present invention, feed opening by the steam coils well heater around, like this, per hour to process the quantity of slag, general heat interchanging area is 18～25m
2/ t, and approximately 60～70% heat interchanging area centralized arrangement, around feed opening, more is conducive to the supply of heat, and then melt sulphur better.
Thick sulphur filtration pump is responsible for sending filtration by the thick sulphur of melting.
In addition, the useful volume of Continuous Heat sulfur melting pool of the present invention designs by following requirement: take and per hour process sulphur slag volume (V slag) as basis, the useful volume of airtight sulfur melting pool (V' pond) is traditionally arranged to be 40～50 times that per hour process sulphur slag volume, be V' pond=V slag * (40～50), try to please and amass coefficient 0.8, airtight sulfur melting pool geometric volume V pond=V' slag/0.8.That is, the useful volume of hot sulfur melting pool is the volume of per hour processing the sulphur slag 40～50 times, due to the restriction that is subject to filtration pump and sucks the degree of depth, the high general 1.8～2m in pond, can better realize continuous sulfur melting like this, and be difficult for overflow and emit groove.
When using Continuous Heat sulfur melting pool of the present invention to melt sulphur, that the sulphur slag directly is added in airtight sulfur melting pool and melts, rely on the temperature of the thick sulphur of melting in sulfur melting pool to carry out the elemental sulfur in heat fused sulphur slag, the temperature of the thick sulphur of melting is provided by the steam coils indirect heating.
The present invention has integrated melts the mentality of designing of sulphur device and continuous sulfur melting device indirectly, has overcome the defect that existing indirectly molten sulphur device can not be realized continuous sulfur melting, has overcome existing continuous sulfur melting device simultaneously and has stopped up the molten bad problem of sulphur effect that reaches.Can, by elemental sulfur fusing in the sulphur slag, reach with slag and separate, with recovery sulphur.The present invention is taken up an area the advantage such as little, that environment protection good, energy-conservation and labour intensity is little except having the distinctive configuration of continuous melting sulphur slag method, also has the advantages such as technological process is short, processing power is large, production operation is simple.
The accompanying drawing explanation
The vertical view that Fig. 1 is a kind of embodiment of Continuous Heat sulfur melting pool of the present invention;
Fig. 2 is Figure 1A-A sectional view;
The vertical view that Fig. 3 is the another kind of embodiment of Continuous Heat sulfur melting pool of the present invention.
In figure: 1, sulfur melting pool body; 2, feed opening; 3, steam coils well heater; 4, agitator; 5, thick sulphur filtration pump.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Referring to Fig. 1 and Fig. 2, described Continuous Heat sulfur melting pool comprises that feed end is provided with the airtight sulfur melting pool body 1 of feed opening 2, and described sulfur melting pool body 1 inwall surrounding is equipped with steam coils well heater 3; Feed opening 2 surroundings have at least the one side also be provided with steam coils well heater 3 make feed opening 2 by the steam coils well heater 3 on this steam coils well heater 3 and sulfur melting pool body 1 inwall around; Around feed opening 2, by steam coils well heater 3 around zone in be provided with agitator 4.
The heat exchange total area that is surrounded on the steam coils well heater 3 of feed opening 2 is 60～70% of the inner all steam coils well heater 3 heat exchange total areas of sulfur melting pool body 1.
The useful volume of described hot sulfur melting pool is the volume of per hour processing the sulphur slag 40～50 times.
The vapor pressure of described steam coils well heater 3 is 650 kPa.
Described sulfur melting pool body 1 discharge end is provided with thick sulphur filtration pump 5.
Described agitator 4 is three leaf propeller mixers, and its rotating speed is 100n/min.
Described sulfur melting pool body 1 liner acid resisting brick.
By moisture approximately 15%, the sulphur slag that reaches more than 75% of elemental sulfur directly joins in above-mentioned Continuous Heat sulfur melting pool, with sulphur in the thick sulphur heat exchange fusing of melting in pond sulphur slag.Through verification experimental verification, when keeping 130～145 ℃ of temperature of fusion, this Continuous Heat sulfur melting pool melts and has increased the volume of sulfur melting pool owing to having cancelled swirler, so does not stop up and be difficult for overflow and emit groove, than swirler continuous sulfur melting method processing power, increases 20～30%.
Referring to Fig. 3, described Continuous Heat sulfur melting pool comprises that feed end is provided with the airtight sulfur melting pool body 1 of feed opening 2, and described sulfur melting pool body 1 inwall surrounding is equipped with steam coils well heater 3; Described feed opening 2 surroundings also are provided with steam coils well heater 3; Around feed opening 2, by steam coils well heater 3 around zone in be provided with agitator 4.
The heat exchange total area that is surrounded on the steam coils well heater 3 of feed opening 2 is 60%～70% of the inner all steam coils well heater 3 heat exchange total areas of sulfur melting pool body 1.
The useful volume of described hot sulfur melting pool is the volume of per hour processing the sulphur slag 40～50 times.
The vapor pressure of described steam coils well heater 3 is 650 kPa.
Described sulfur melting pool body 1 discharge end is provided with thick sulphur filtration pump 5.
Described agitator 4 is three leaf propeller mixers, and its rotating speed is 100n/min.
Described sulfur melting pool body 1 liner acid resisting brick.
By moisture approximately 15%, the sulphur slag that reaches more than 75% of elemental sulfur directly joins in above-mentioned Continuous Heat sulfur melting pool, with sulphur in the thick sulphur heat exchange fusing of melting in pond sulphur slag.Through verification experimental verification, when keeping 130～145 ℃ of temperature of fusion, this Continuous Heat sulfur melting pool melts and has increased the volume of sulfur melting pool owing to having cancelled swirler, so does not stop up and be difficult for overflow and emit groove, than swirler continuous sulfur melting method processing power, increases 20～30%.
Claims (8)
1. a Continuous Heat sulfur melting pool, comprise that feed end is provided with the airtight sulfur melting pool body (1) of feed opening (2), and described sulfur melting pool body (1) inwall surrounding is equipped with steam coils well heater (3); It is characterized in that, described feed opening (2) surrounding also is provided with steam coils well heater (3), or feed opening (2) surrounding have at least the one side also be provided with steam coils well heater (3) make feed opening (2) by the steam coils well heater (3) on this steam coils well heater (3) and sulfur melting pool body (1) inwall around; Feed opening (2) on every side, by steam coils well heater (3) around zone in be provided with agitator (4).
2. hot sulfur melting pool as claimed in claim 1, is characterized in that, the heat exchange total area that is surrounded on the steam coils well heater (3) of feed opening (2) is 60%～70% of the inner all steam coils well heaters of sulfur melting pool body (1) (3) the heat exchange total area.
3. hot sulfur melting pool as claimed in claim 1, is characterized in that, the useful volume of described hot sulfur melting pool is the volume of per hour processing the sulphur slag 40～50 times.
4. hot sulfur melting pool as claimed in claim 1, is characterized in that, described sulfur melting pool body (1) discharge end end is provided with thick sulphur filtration pump (5).
5. hot sulfur melting pool as described as claim 1 or 7, is characterized in that, described agitator (4) is three leaf propeller mixers.
6. hot sulfur melting pool as claimed in claim 8, is characterized in that, described agitator (4) rotating speed is 80～120n/min.
7. hot sulfur melting pool as claimed in claim 1, is characterized in that, described sulfur melting pool body (1) liner acid resisting brick.
8. hot sulfur melting pool as claimed in claim 1, is characterized in that, described sulfur melting pool height is 1.8～2m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310371593.8A CN103420343B (en) | 2013-08-23 | 2013-08-23 | Continuous sulfur heating melting pool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310371593.8A CN103420343B (en) | 2013-08-23 | 2013-08-23 | Continuous sulfur heating melting pool |
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| CN103420343A true CN103420343A (en) | 2013-12-04 |
| CN103420343B CN103420343B (en) | 2015-02-11 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946096Y (en) * | 2006-08-21 | 2007-09-12 | 曲彦民 | Integrated continuously sulfur fusing kettle |
| CN202131092U (en) * | 2011-05-23 | 2012-02-01 | 广西南宁成泰糖业技术有限公司 | Hot-gas atomizing brimstone-spraying system of small-sized brimstone furnace |
| CN202131090U (en) * | 2011-05-23 | 2012-02-01 | 广西南宁成泰糖业技术有限公司 | Electric heating brimstone melting pool of small-sized brimstone furnace |
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2013
- 2013-08-23 CN CN201310371593.8A patent/CN103420343B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946096Y (en) * | 2006-08-21 | 2007-09-12 | 曲彦民 | Integrated continuously sulfur fusing kettle |
| CN202131092U (en) * | 2011-05-23 | 2012-02-01 | 广西南宁成泰糖业技术有限公司 | Hot-gas atomizing brimstone-spraying system of small-sized brimstone furnace |
| CN202131090U (en) * | 2011-05-23 | 2012-02-01 | 广西南宁成泰糖业技术有限公司 | Electric heating brimstone melting pool of small-sized brimstone furnace |
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| CN103420343B (en) | 2015-02-11 |
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