CN206680185U - A kind of impure selenium slag wet feed vacuum smelting equipment - Google Patents
A kind of impure selenium slag wet feed vacuum smelting equipment Download PDFInfo
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- CN206680185U CN206680185U CN201720409296.1U CN201720409296U CN206680185U CN 206680185 U CN206680185 U CN 206680185U CN 201720409296 U CN201720409296 U CN 201720409296U CN 206680185 U CN206680185 U CN 206680185U
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- condensing unit
- selenium
- melting kettle
- vacuum
- wet feed
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- 239000011669 selenium Substances 0.000 title claims abstract description 125
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 124
- 238000003723 Smelting Methods 0.000 title claims abstract description 48
- 239000002893 slag Substances 0.000 title claims abstract description 44
- 238000002844 melting Methods 0.000 claims abstract description 54
- 230000008018 melting Effects 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000000740 bleeding effect Effects 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000011068 loading method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 26
- 239000007789 gas Substances 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
- 238000004821 distillation Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000001291 vacuum drying Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 241000283216 Phocidae Species 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000005292 vacuum distillation Methods 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000011133 lead Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001698 pyrogenic effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- JPJALAQPGMAKDF-UHFFFAOYSA-N selenium dioxide Chemical compound O=[Se]=O JPJALAQPGMAKDF-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001180 sulfating effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of impure selenium slag wet feed vacuum smelting equipment is the utility model is related to, belongs to metallurgical technology field of engineering technology.The utility model wet feed vacuum smelting equipment is made up of heating and temperature control device, smelting apparatus, feeding device, drawing mechanism, agitating device, condensing unit and vacuum system, wherein being tightly connected between each device, to ensure that whole equipment has seal and pressure bearing.Smelting apparatus includes melting kettle, bell and agitating device, and melting kettle is connected with bell by flange, and melting kettle outer wall sets one layer of heating element heater, and temperature in melting kettle is controlled by the electrical apparatus control system of heating and temperature control device；Bell top be provided with can continuous charging at regular time and quantity feeding device, and be positioned over and be used for the agitating device for stirring melt inside melting kettle, bell top is provided with air guide port, and smelting apparatus is connected by airway tube with condensing unit；Drawing mechanism is located at the lower outside of melting kettle, including discharge nozzle and discharge valve；Condensing unit is made up of airway tube, baffle plate, safety valve, vent valve, bleeding point and draining valve；Vacuum system includes water ring pump and pump-line, and vacuum system is connected by bleeding point with condensing unit.
Description
Technical field
The present invention relates to a kind of impure selenium slag wet feed vacuum smelting equipment, belongs to metallurgical technology field of engineering technology.
Background technology
Selenium is a kind of important semi-conducting material, and fusing point is 221 DEG C, and boiling point is 685 DEG C.Abundance of the selenium in the earth's crust be only
0.05~0.09mg/kg, it is not yet found that the independent Se fractionation of economic value, the usual association of selenium is in copper, lead, nickel etc. in nature
In metal sulfide.The main source of selenium is byproduct caused by heavy metal sulphide ore is smelted, and the anode mud of copper electroplating and copper
Sulphide ore smelting smoke dust production selenium amount account for the 90% of selenium total output, remaining come from lead, cobalt, nickel refining output calcining with
And reclaim and obtain in the sour mud of gas washing in SA production and the washing mud of production slurrying.
The method that selenium is extracted in the anode mud of copper electroplating is broadly divided into pyrogenic process deselenization technique and wet method deselenization technique.Conventional fire
Method deselenization technique has oxidation roasting method, soda sintered method, sulfating roasting method, chloridising etc..The characteristics of thermal process is to pass through
Selenium element is oxidized to volatile material or material soluble in water by oxidant, and then control condition makes selenium divide from material
Separate out and, other elements continue to stay in material, reach the purpose of separation selenium.
The method of currently used pyrogenic process extraction selenium is the method for interruption vacuum distillation, and device therefor is horizontal retort,
Technique is：Impure selenium slag wet feed-drying-vacuum distillation-product.The byproduct that the earth of positive pole obtains is obtained by the method for extruding
The aqueous impure selenium slag wet feed 30% or so is obtained, it is 1.2g/cm that obtained wet feed, which first passes through drying and obtains density,3The dry powder of left and right
Material, then distills to obtain the impure selenium product containing tellurium with horizontal vacuum furnace, afterwards further except tellurium so as to obtain smart selenium, and gold, silver,
Copper, lead etc. are enriched in residue.The drawbacks of the method is present is drying section, and time-consuming, power consumption is big, operating environment is poor, dries
The material density obtained afterwards is small and is in powdery.When being distilled using horizontal vacuum furnace, powder raw material is vacuumizing and heating process
In easily produce and dust phenomenon, the granular material that splash comes out can block vacuum line, pollution condensation chamber causes product quality low,
Cause operating environment poor when tearing stove open.Dried impure selenium slag density only has 1.2g/cm3Left and right, the property of powder raw material determine
The each treating capacity of single device is less, distilling period is integrally consumed energy and greatly increases.
The content of the invention
It is an object of the invention to provide a kind of impure selenium slag wet feed vacuum smelting equipment.Impure selenium slag wet feed is in present device
Vacuum drying, fusing, melting, vacuum outgas, yielded poorly with solving existing impure selenium slag wet feed single device, operating environment difference etc.
Problem.
In order to achieve the above object, the present invention uses following technical scheme：
Impure selenium slag wet feed vacuum melting of the present invention includes heating and temperature control device, feeding device, smelting apparatus, stirring dress
Put, drawing mechanism, condensing unit, vacuum system.Heating is provided with outside smelting apparatus and temperature control device, smelting apparatus upper end are provided with
Feeding device and agitating device, smelting apparatus lower end are provided with drawing mechanism, and smelting apparatus is connected with condensing unit by airway tube.
It is tightly connected between each device and ensures that whole equipment has seal and pressure bearing.
For the feeding device on bell, feeding device (4) includes loading hopper and the interior charging mechanism set, is set by interior
Charging mechanism realizes under vacuum conditions continuous charging at regular time and quantity, can be into melting kettle (2) constantly in Vacuum Melting
Charging；The charging mechanism is the mechanism, the mechanism of screw-rod structure and the machine with quantifying feed functional structure of upset structure
Structure.
The smelting apparatus includes melting kettle, bell, and melting kettle is connected with bell by flange.Outside melting kettle
If one layer of heating element heater, temperature in melting kettle is controlled by the electrical apparatus control system of heating and temperature control device.Bell is provided with
Can continuous charging at regular time and quantity feeding device, and probe into inside melting kettle and be used for the agitating device for stirring melt, melting
Device is connected by airway tube with condensing unit.
The agitating device includes motor, reductor, connecting shaft and agitating paddle, and the agitating paddle is probeed into inside melting kettle
To stir material.
The drawing mechanism is located at the lower outside of melting kettle, including discharge nozzle and discharge valve.Discharge nozzle leading portion has
Heater, jacket cooling apparatus is provided with close at outlet valve doorway.Discharge valve can be with discharge nozzle using the viscosity of selenium melt
Form airtight connection.
The condensing unit includes airway tube, baffle plate, safety valve, vent valve, bleeding point, draining valve, safety valve and deflation
Valve is located at condensing unit top, and for bleeding point located at condensing unit away from airway tube side, it is remote that draining valve is located at condensing unit bottom
From airway tube side, baffle plate is in upper and lower cross structure inside condensing unit, is formed for changing the curved of gas flow direction
Bent gas circuit, steam channel are S types to provide heat exchanger effectiveness.
The vacuum system includes water-circulating pump and pump-line, is connected by bleeding point with condensing unit.
Baffle arrangement inside condensing unit of the present invention up and down staggeredly, forms the bending gas for changing gas flow direction
Road, ensure that the passage that gas is walked in it is S-shaped, both can guarantee that the vapor interface product and can of maximum blocked and mixed in vapor
Miscellaneous selenium steam discharges with vapor, whole process material almost free of losses all in confined space.Set on condensing unit
The safety valve put can ensure the security of production, avoid causing excessive generation malleation in stove because vapour quantity is excessive.
Working mechanism：Selenium can form amorphous and crystalline solid.Amorphous selenium is also " liquid " selenium, can be divided into powdery
Selenium, vitreous selenium and gluey selenium, no definite melting point.Amorphous selenium begins to soften at 40~50 DEG C, can be flowed at 100 DEG C
It is dynamic, become liquid at 220 DEG C.After liquid selenium fusing, plastic state can be kept for a long time.Quickly cooling can be formed melting selenium solution
Amorphous glass state selenium.
Formed during cooling small, oxidizable, quick for moisture height, selenium poor thermal conductivity, specific heat in aqueous selenium slag of the invention viscous
The characteristic for spending high amorphous selenium is provided with agitating device, vacuum system, heating and temperature control device, feeding device and condensing unit.
Due to the specific heat of selenium is small, poor thermal conductivity, quick cooling when form the characteristic of the high amorphous selenium of viscosity, when aqueous selenium slag
When being added in selenium melt, because temperature of charge is low, the hot melt of water and vaporization need to absorb substantial amounts of heat, can be formed around selenium slag
The clad of one layer of amorphous selenium, it when the volume of material of addition is larger, then can form bulk, make internal moisture be difficult to volatilize,
Heat is difficult to pass to inside, can greatly reduce production efficiency.Therefore, this equipment is fed using feeding device segmentation is a small amount of, together
When carry agitating device, the impure selenium slag for making subsequently to add by agitating device is scattered in the selenium melt melted, is formed a large amount of
Small coated particle, the contact surface of increase selenium slag and selenium melt.Feeding device controls feeding quantity, is advantageous to prevent selenium solution without fixed
Shape, so that device interior material viscosity increased dramatically, so that agitating device damages.Filled by the poor thermal conductivity of selenium in stirring
In the presence of putting, the heat of heater can be accelerated to pass in selenium melt, then be passed to from selenium melt in selenium slag raw material, so as to carry
High heat transfer efficiency.
Because selenium is oxidizable, moisture height, selenium melt easily coat salt in vapor and melting selenium melt and decomposed in selenium slag
The characteristic of caused effumability gas.Material is melted under vacuum conditions using in vacuum system, the oxidation of selenium can be prevented,
The evaporating temperature of water can be reduced simultaneously.Selenium melt easily coats vapor and other gases, and stirring dress is set in stock melting device
The removing speed for accelerating gas in material is put, increases the effect of mass transmitting in material.
Due to containing large quantity of moisture and other gases in selenium slag, vacuum system, condensing unit are provided with.Pass through vacuum system
With condensing unit collective effect, be advantageous to accelerate the vapor and other effumability gaseous volatilizations in selenium melt, and be easy to pair
Gas is oriented condensation and collected, and is advantageous to the recovery of water.Due to the presence of water can also make a small amount of volatile selenium oxide and its
Its detrimental oxide is absorbed well, discharges tail gas meet the requirement of environmental protection.Periodically to condensing, water process is recyclable to be dissolved in
Selenium in water, this free of losses of seleno, selenium recovery are high.
Due in selenium slag containing the viscosity height of selenium, light specific gravity, mobility after large quantity of moisture and other gases and fusing small, selenium
It can be dispersed in selenium melt in gas caused by fusion process in slag and form bread-like, the selenium melt that melting obtains passes through vacuum again
Distilation.Vacuum distillation when due to selenium melt in a large amount of gases be present, material charge weight can be reduced, while can influence to steam
Effect is evaporated, therefore agitating device, vacuum system, heater are set.By heater make material reach certain temperature so as to
The viscosity of material is reduced, makes selenium melt internal gas be easy to spread, while accelerate in the presence of agitating device and vacuum system
Gas removal speed, the purpose of gas in removing material is finally reached, material density is increased to 4g/cm3More than, be advantageous to thing
Expect subsequent purification.
Because equipment of the present invention is operated under the conditions of having pressure, therefore the sealing of equipment is fine, integration of equipments
Function is more.Therefore, discharged if this equipment is taken above stock melting device, selenium is oxidizable under high temperature, can produce during discharging big
The selenium steam of amount, operating environment is poor, and discharging labor intensity is big.The present invention can be formed using selenium melt poor thermal conductivity, quick cooling
The properties such as amorphous glass state selenium, and equipment vacuum sealing the characteristics of being easy to blowing again should can devise drawing mechanism.
Cooling device is being provided with close at outlet valve doorway, the device that is cooled when the selenium solution of melting is flow at discharge valve is quick
It is cooled into amorphous glass state selenium, discharge valve and discharge nozzle gap location and forms airtight connection full of amorphous glass state selenium.
Selenium solution in discharge nozzle carries out heat exchange with the selenium cooled down at discharge valve, certain thickness amorphous selenium is formed, due to nothing
Setting selenium is begun to soften at 40~50 DEG C, and " self sealss " are carried out using the plasticity of selenium at a temperature of this itself.When needing discharging,
Condensing unit is closed, the heater that discharge nozzle leading portion is set is opened and is heated, will be discharged by the heat transfer of storeroom
Glassy state selenium liquid at pipe and discharge valve gradually melts, and opening discharge valve can directly release the selenium liquation in equipment.Go out
Material device setting solves the problems, such as current selenium melt blowing difficulty because of caused by big, volatile, the difficult heat conduction of viscosity.
Aqueous impure selenium slag is about 1.2g/cm using the dried density of existing method3, and after using present device fusing
Obtained impure selenium fusant density is in 4g/cm3More than, therefore the treating capacity of same volume distillation equipment of the present invention is about original 4
Times.Single device treating capacity increase reduces blow-on, blowing out, tears stove frequency open, meanwhile, selenium material melts for fine and close after fusing degassing
Body, the heat transfer efficiency of storeroom is added, reduce the energy consumption of vacuum distillation process, and the environmental issue to distill afterwards carries
For ensureing.
Compared with prior art, the present invention has advantages below：
(1) yield is big：Impure selenium slag wet feed is fast using present device burn-off rate, and the selenium fusant density for melting output is more than
Dry material density, the treating capacity of same volume distillation equipment are original 4 times, therefore production capacity has and significantly lifted.
(2) energy consumption is small：Impure selenium slag wet feed is steamed using material density increase after present device fusing, degassing, same volume
Evaporating the charge of equipment also increases, in the distillation stage because the increase of charge makes the ton material energy consumption of whole production process reduce very
It is more.The energy consumption that one ton of impure selenium slag of processing is evaporated in vacuo through statistics is reduced to 500KWh/t from 1000KWh/t.
(3) rate of recovery is high：The all operations under closed environment of all production processes, selenium almost do not lose, selenium recovery
It is high.
(4) product grade is high：Solves the problems, such as powder-material distillation, impure selenium slag wet feed is after present device melts, deaerated
Impure selenium melt is obtained, problem of dusting is not present in melt still-process, the product grade for distilling output is obviously improved.
(5) equipment is simply easily safeguarded：Compared to the hot-air drying stove or microwave drier or vacuum drying oven of traditional handicraft
Add horizontal retort, present device is hardly damaged in the structurally and operationally all simpler dexterity of aspect, equipment, and operating environment is done
Only, maintenance cost is low.
(6) it is pollution-free：The whole few selenium steams of production process or other pernicious gases enter air, in the absence of traditional work
Dust pollution in skill, it is environment-friendly.
Brief description of the drawings
Fig. 1 is a kind of structural representation of impure selenium slag wet feed vacuum smelting equipment of the present invention.
Reference is：1-heating and temperature control device；2-melting kettle；3-bell；4-feeding device；5-stirring
Device；6-flange；7-airway tube；8-condensing unit；9-baffle plate；10-safety valve；11-vent valve；12-bleeding point；
13-draining valve；14-discharge valve；15-discharge nozzle.
Embodiment
1 pair of impure selenium slag wet feed vacuum smelting equipment of the invention is described further below in conjunction with the accompanying drawings.
As shown in figure 1, the present invention impure selenium slag wet feed vacuum smelting equipment by heating and temperature control device (1), smelting apparatus,
Feeding device (4), agitating device (5), drawing mechanism, condensing unit (8), vacuum system composition, including heating and temperature control device
(1), melting kettle (2), bell (3), feeding device (4), agitating device (5), flange (6), airway tube (7), condensing unit
(8), baffle plate (9), safety valve (10), vent valve (11), bleeding point (12), draining valve (13), discharge valve (14), discharge nozzle
(15).Heating is provided with outside smelting apparatus and temperature control device (1), smelting apparatus upper end are provided with feeding device (4) and agitating device
(5), smelting apparatus lower end is provided with drawing mechanism, and smelting apparatus connects (8) by airway tube with condensing unit.
Feeding device (4) is on bell (3), including loading hopper and the interior charging mechanism set, and charging mechanism is set by interior
Continuous charging at regular time and quantity under vacuum conditions is realized, can constantly be fed into melting kettle (2) in Vacuum Melting；Institute
Charging mechanism is stated as the mechanism of upset structure, the mechanism of screw-rod structure and the mechanism with quantifying feed functional structure.
Smelting apparatus includes melting kettle (2), bell (3), melting kettle (2) and bell (3) are connected by flange (6).
One layer of heating element heater is set outside melting kettle (2), is controlled by the electrical apparatus control system of heating and temperature control device in melting kettle
Temperature.Bell be provided with can continuous charging at regular time and quantity feeding device (4), and probe into that melting kettle (2) is internal to be used for
The agitating device (5) of melt is stirred, smelting apparatus is connected by airway tube with condensing unit.
For agitating device (5) on bell (3), agitating device includes motor, reductor, connecting shaft and agitating paddle, molten
Agitating paddle probes into melting kettle (2) to stir material during refining, for increasing fast melting rate and outgassing rate.
Drawing mechanism is located at the lower outside of melting kettle (2), including discharge valve (14) and discharge nozzle (15).Discharge nozzle
(15) leading portion has heater, is cooled down close at valve port provided with water jacket with water flowing.Discharge valve (14) utilizes the viscous of selenium melt
Property can with discharge nozzle formed airtight connection, discharge valve (14) have connection and be passed through the pipeline of cooling agent, valve preferentially uses copper
Metal material is made, and for cooling down selenium melt, reaches the effect of sealing vacuum.
Condensing unit (8) is provided with airway tube (7), baffle plate (9), safety valve (10), vent valve (11), bleeding point (12), row
Water valve (13).The inwall of condensing unit (8) is provided with baffle plate (9) up and down staggeredly, forms the S for changing gas flow direction
Shape bends gas circuit, to filter steam.Safety valve (10) is located at condensing unit (8) top, when its internal pressure is excessive from protect
Effect.Vent valve (11) is located at condensing unit (8) top, for deflating.Bleeding point (12) is located at condensing unit away from airway tube
(7) side, it is evacuated for connecting vacuum system.Draining valve (13) is located at condensing unit bottom away from airway tube (7) side,
For discharging the condensed water in condensing unit.Caused steam passes through airway tube (7) in smelting apparatus (3) in equipment running process
Import in condensing unit (8).
The present invention, which dries wet feed on the basis of traditional handicraft, is changed to wet feed directly fusing degassing under vacuum conditions, then
With the raw material of vacuum drying oven distillation fusing, its technique is：Water-containing material-vacuum tightness melting-vacuum distillation-product.In vacuum
To raw material impure selenium slag, (aqueous less than 30%) is melted, deaerated, melting, is lacked/bubble-free in closed container under environment
Melt liquid, density is more than 4g/cm3, then it is evaporated in vacuo with vacuum drying oven, selen-tellurjum of the output composition more than 99.9%
Alloy.To solve to be evaporated in vacuo with existing impure selenium slag, selenium product grade caused by technique or equipment is not high, and treating capacity is small, energy consumption
Greatly, drying time is grown, the problems such as operating environment difference.
Embodiment 1
Impure selenium slag wet feed vacuum smelting equipment of the present invention using when main operational steps have：
Step 1：Added to melting kettle after a certain amount of impure selenium slag wet feed and seal smelting apparatus, opened vacuum system and add
Heat and temperature control device (1), while start agitating device (5) and be constantly stirred；
Step 2：Treat that raw material all melts in melting pot, after reaching predetermined temperature by heating and temperature control device (1), stops
Only vacuumize and open vent valve (11), open feeding device (4) charging, after the completion of seal smelting apparatus, start vacuum system,
10~20min is repeated once exhaust, charging process, and the condensed water in a condensing unit is discharged every 2~3h；
Step 3：Stop charging after the total amount that feeds reaches to a certain degree, when keeping one section of vacuum again by vacuum system
Between；
Step 4：Few/bubble-free is finally obtained, density is more than 4.0g/cm3Impure selenium melt, pass through discharge nozzle (15) arrange
Go out.
The vacuum drying of present invention collection, fusing, melting, vacuum outgas are a stove, and obtained alloy state impure selenium density is more than
4.0g/cm3So that the treating capacity of same volume distillation equipment can at least increase by 4 times, and the increase of equipment treating capacity reduces out
Stove, blowing out, tear stove frequency open, and then reduce energy consumption so that the structure of back segment vacuum distillation plant is greatly simplified and given birth to for cleaning
The environmental issue of production provides guarantee.
Embodiment 2
Impure selenium slag wet feed vacuum smelting equipment of the present invention using when main operational steps have：
Step 1：500Kg impure selenium slag wet feeds are added in loading hopper, controlled by feeding device (4) with per minute
Impure selenium slag is added in melting kettle (2) by the speed stable of 1.5Kg, opens vacuum system and heating and temperature control device (1),
Start agitating device (5) simultaneously to be constantly stirred；
Step 2：Treat that all addition finishes 500Kg raw materials in melting pot, reaches predetermined by heating and temperature control device (1)
After temperature, holding vacuumizes 0.5~2h until selenium fusant density is more than 4.0g/cm3, stop vacuumizing and opening vent valve
(11), selenium melt is discharged by discharge nozzle (15).
Claims (8)
1. a kind of impure selenium slag wet feed vacuum smelting equipment, it is characterised in that wet feed vacuum smelting equipment is by heating and temperature control device
(1), smelting apparatus, feeding device (4), drawing mechanism, agitating device (5), condensing unit (8) and vacuum system composition, wherein
Connected between each device each other by seal for pipe joints, to ensure that whole vacuum smelting equipment has sealing and pressure-bearing property；
Wherein smelting apparatus includes melting kettle (2), bell (3) and agitating device (5), and melting kettle (2) passes through with bell (3)
Flange (6) connects, and melting kettle (2) outer wall is provided with one layer of heating element heater, passes through the electrical equipment control of heating element heater and temperature control device (1)
Temperature in system control melting kettle processed；Smelting apparatus upper end is provided with feeding device (4) and agitating device (5), bell (3) top
Air guide port is provided with, smelting apparatus lower end is provided with drawing mechanism, and smelting apparatus is connected by airway tube (7) with condensing unit (8).
2. impure selenium slag wet feed vacuum smelting equipment according to claim 1, it is characterised in that：Set outside the smelting apparatus
Have heating and a temperature control device (1), bell (3) top of smelting apparatus be provided with can continuous charging at regular time and quantity feeding device (4)
And it is positioned over the internal agitating device (5) for being used to stir melt of melting kettle (2).
A kind of 3. impure selenium slag wet feed vacuum smelting equipment according to claim 1, it is characterised in that：The feeding device
(4) include loading hopper and the interior charging mechanism set, continuous at regular time and quantity under vacuum conditions add is realized by the interior charging mechanism that sets
Material, can constantly feed in Vacuum Melting into melting kettle (2)；The charging mechanism is the mechanism of upset structure, screw rod
The mechanism of structure and the mechanism with quantifying feed functional structure.
4. impure selenium slag wet feed vacuum smelting equipment according to claim 1, it is characterised in that：Agitating device (5) bag
Motor, reductor, connecting shaft and agitating paddle are included, the agitating paddle, which is placed on, is used for the material for stirring fusing inside melting kettle,
Accelerate material melting speed.
5. impure selenium slag wet feed vacuum smelting equipment according to claim 1, it is characterised in that：The drawing mechanism includes
Expect valve (14) and discharge nozzle (15), drawing mechanism is located at the lower outside of melting kettle (2)；The discharge valve (14) is preferred
Copper metal material is made.
6. impure selenium slag wet feed vacuum smelting equipment according to claim 5, it is characterised in that：Discharge nozzle (15) leading portion is set
There is heater, jacket cooling apparatus is provided with close at the valve port of discharge valve (14), discharge valve (14) utilizes selenium melt
Viscosity can with discharge nozzle formed airtight connection.
7. impure selenium slag wet feed vacuum smelting equipment according to claim 1, it is characterised in that：The condensing unit (8) is by leading
Tracheae (7), baffle plate (9), safety valve (10), vent valve (11), bleeding point (12) and draining valve (13) are formed, safety valve (10)
Condensing unit (8) top is located at vent valve (11), bleeding point (12) is located at condensing unit (8) away from airway tube (7) side, row
Water valve (13) is located at condensing unit (8) bottom away from airway tube (7) side, and baffle plate (9) is internal located at condensing unit (8) and presents
Lower cross structure, forms the bending gas circuit for changing gas flow direction, and steam channel is S types.
8. impure selenium slag wet feed vacuum smelting equipment according to claim 1, it is characterised in that：The vacuum system is followed including water
Ring pump and pump-line, vacuum system are connected by bleeding point with condensing unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720409296.1U CN206680185U (en) | 2017-04-18 | 2017-04-18 | A kind of impure selenium slag wet feed vacuum smelting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720409296.1U CN206680185U (en) | 2017-04-18 | 2017-04-18 | A kind of impure selenium slag wet feed vacuum smelting equipment |
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| CN206680185U true CN206680185U (en) | 2017-11-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927433A (en) * | 2017-04-18 | 2017-07-07 | 昆明鼎邦科技股份有限公司 | A kind of impure selenium slag wet feed vacuum smelting equipment |
| CN112028033A (en) * | 2020-08-27 | 2020-12-04 | 昆明理工大学 | Device and method for purifying selenium through crystallization |
-
2017
- 2017-04-18 CN CN201720409296.1U patent/CN206680185U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927433A (en) * | 2017-04-18 | 2017-07-07 | 昆明鼎邦科技股份有限公司 | A kind of impure selenium slag wet feed vacuum smelting equipment |
| CN112028033A (en) * | 2020-08-27 | 2020-12-04 | 昆明理工大学 | Device and method for purifying selenium through crystallization |
| CN112028033B (en) * | 2020-08-27 | 2022-06-14 | 昆明理工大学 | Device and method for purifying selenium through crystallization |
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