CN202347064U - Shaft furnace type oxidization and sodium treatment roasting device - Google Patents
Shaft furnace type oxidization and sodium treatment roasting device Download PDFInfo
- Publication number
- CN202347064U CN202347064U CN2011204641711U CN201120464171U CN202347064U CN 202347064 U CN202347064 U CN 202347064U CN 2011204641711 U CN2011204641711 U CN 2011204641711U CN 201120464171 U CN201120464171 U CN 201120464171U CN 202347064 U CN202347064 U CN 202347064U
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- furnace wall
- oxidation sodium
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Abstract
The utility model discloses a shaft furnace type oxidization and sodium treatment roasting device comprising a vertical furnace wall brick masonry, a furnace chamber, a rotary feeding machine, a drying bed, a combustion chamber, a blower and an unloading device, wherein the furnace chamber formed by the furnace wall brick masonry is arranged vertically; the rotary feeding machine is arranged above the furnace wall brick masonry and used for feeding materials; the drying bed is connected with the drying bed and inclined downwards to ensure that materials can enter into the furnace chamber; the combustion chamber is arranged outside the furnace wall brick masonry, and is provided with a crater; the crater is arranged in the middle of the furnace wall brick masonry, and is communicated with the furnace chamber, so as to ensure that combustion gas generated during the combustion of the combustion chamber can enter into the furnace chamber; the blower is arranged in the center of the lower part of the furnace wall brick masonry and used for generating cooling air in the furnace chamber; and the unloading device is arranged below the furnace wall brick masonry and is used for discharging materials treated with oxidization, sodium treatment and cooling. The oxidization and sodium treatment roasting device can be used in the field of oxidization and sodium treatment roasting.
Description
Technical field
The utility model relates to vanadium titano-magnetite, to contain the scherbinaite coal be oxidation sodium roasting technology field in the metallurgical process for extracting vanadium flow process of raw material, especially relates to a kind of high-efficiency and energy-saving type shaft furnace formula oxidation sodium calciner of economy.
Background technology
Vanadium has good physicals, stable chemical properties and good catalytic, and it is widely used in numerous areas such as industry, military affairs, aviation.Titanium is also because of having excellent physics, chemical property, and is widely used in fields such as chemical industry, metallurgy, aviation.Developed country all pays much attention to vanadium titanium industrial expansion, and always the vanadium titanium as strategic materials reserve, China has listed vanadium in one of rare elements that restricts export.
Existing with vanadium titano-magnetite, to contain scherbinaite coal etc. be raw material, the Production Flow Chart of producing the vanadium Industrial products of barium oxides such as Vanadium Pentoxide in FLAKES and vanadous oxide is: pre-treatment → roasting → leaching → deposition → pyrolysis or reduction.Wherein roasting is generally the oxidation sodium roasting, in whole technological process, plays important effect.So-called oxidation sodium roasting is an additive with the sodium salt, through oxidizing reaction, with the vanadium ion (V of various valence states in the raw material exactly
+ 3, V
+ 4) be converted into soluble vanadium ion (V
+ 5) process, promptly under oxidizing atmosphere, make it after the oxidation to generate the process of the vanadic acid sodium that is dissolvable in water water with the sodium salt reaction.In the roasting process, temperature and atmosphere are to influence roasting quality, and then influence the principal element of vanadium transformation efficiency.Vanadium titano-magnetite or contain the scherbinaite coal, the temperature of roasting in stove is continuously from low temperature to high temperature, stepping process from high temperature to low temperature again, under the said temperature environment, vanadium titano-magnetite or contain the scherbinaite coal and progressively accomplish oxidation, sodium and process of cooling.In vanadium titano-magnetite pelletizing entering stove, begin, to about 600 ℃, accomplish oxidation; Since 600 ℃, between top temperature, accomplish the sodium process, general top temperature is controlled at 800 ~ 1200 ℃; Is process of cooling from top temperature to about 500 ℃.So-called calcination atmosphere is meant will make in the reaction shaft furnace and is in oxidizing atmosphere that promptly oxygen has certain surplus.
At present, roasting apparatus adopts rotary kiln, multiple hearth furnace, flat kiln more.Wherein:
Rotary kiln is the stove with the round tube type at less angle of inclination, inner lining refractory.The vanadium titano-magnetite pelletizing is packed into from kiln body one end, is that discharge end is provided with the heating burner so that the vanadium titano-magnetite pelletizing in the kiln is heated at the other end of kiln body.The intravital furnace charge of kiln is from continuous whereabouts, the furnace wall of rotation and be stirred roasting, discharges from the bottom of kiln body discharge end.Because the suction of flue gas has prevented to expose flue gas and dust from the two ends of stove.Rotary structure is simple, stirring is good, heat distribution is even, throughput is big, maintenance and simple to operate.Its shortcoming is: initial outlay is bigger, and is strict to material proportion, relatively poor to the flexibility of raw material, and Control for Kiln Temperature is difficult, is prone to form spherical material, even forms ring-type furnace accretion (being ring formation in the kiln), thereby brings difficulty to operation, and the vanadic acid sodium transformation efficiency is low.
Multiple hearth furnace is the vertical round tube type stove with multilayer burner hearth, its inner lining refractory block, and 8 ~ 12 layers from bottom to top, each layer all has steel plate to build refractory brick, is equipped with rake teeth above every layer, by the hub driven rotary.Raw material is packed into by the upper strata, concentrates to the center through stirring by periphery, and therefrom the mind-set periphery successively moves down dispersedly again, after drying, roasting, discharges from the lowest layer.This furnace type structure is complicated, and initial outlay is big, maturing temperature and atmosphere can not be controlled preferably, and failure rate of machinery is high, and rake teeth is because of the lower melting point resultant is prone to cohered, buildup.
Flat kiln yields poorly (about 0.1 ton/square metre hour), and labor strength is big, and flue dust overflows, severe operational environment, vanadic acid sodium transformation efficiency low about 50%.
Obviously, existing oxidation sodium roasting apparatus have that initial outlay is big, maturing temperature and atmosphere can not be controlled preferably and cause kiln body ring formation or rake teeth to cohere the defective of buildup because of material coheres.
The utility model content
The utility model for solve prior art oxidation sodium roasting apparatus exist initial outlay big, yield poorly, transformation efficiency is low, maturing temperature and atmosphere can not be controlled preferably and cause kiln body ring formation or rake teeth to cohere the technical problem of the defective of buildup because of material coheres, and a kind of shaft furnace formula oxidation sodium calciner is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is a kind of shaft furnace formula oxidation sodium calciner of design, and said shaft furnace formula oxidation sodium calciner comprises:
The furnace wall brick masonary that vertically is provided with;
Surround the furnace chamber that forms and vertically be provided with by the furnace wall brick masonary;
Be positioned at the rotary feeder that furnace wall brick masonary top is used for charging;
Be connected with said rotary feeder and towards having a down dip so that material gets into the oven dry bed of furnace chamber;
Be located at the combustion chamber in the furnace wall brick masonary outside, said combustion chamber is provided with to be positioned at and communicates in the middle part of the furnace wall brick masonary and with said furnace chamber so that the combustion gases that combustion chambers burn produces get into the crater of furnace chamber;
Be arranged in furnace wall brick masonary bottom center to produce cooling air in the gas blower of furnace chamber;
Be positioned at furnace wall brick masonary below and be used to discharge the dumping device of accomplishing oxidation sodium and cooled material.
Said shaft furnace formula oxidation sodium calciner also comprises the water conservancy diversion partition wall that is arranged on said furnace wall brick masonary central authorities and said furnace wall brick masonary is divided into two; Said furnace chamber is divided into two by said water conservancy diversion partition wall; Said rotary feeder be located at said water conservancy diversion partition wall directly over; Said oven dry bed comprises two, and is the centrosymmetry setting with said water conservancy diversion partition wall.
Said shaft furnace formula oxidation sodium calciner also comprises the grate plate that is connected and tilts to the said dumping device of connection with said water conservancy diversion partition wall lower end down, and said gas blower is positioned at said grate plate below, and said grate plate is provided with intake opening.
Said shaft furnace formula oxidation sodium calciner also comprises smoke collection cover that is connected with furnace wall brick masonary top and the smoke discharging pipe of being located at the smoke collection cover top.
The xsect of said furnace wall brick masonary and furnace chamber is all rectangular, and the size of said furnace chamber xsect is convergent, constant, flaring and convergent from top to bottom successively along short transverse and changes.
The arranged outside of said combustion chamber has at least two coal gas burners.
The utility model feeds into towards the oven dry bed that has a down dip through the rotary feeder that is positioned at furnace wall brick masonary top through material after will making ball; After the oven dry bed is dry, get into and surround in the vertical furnace chamber that forms through the furnace wall brick masonary; Material is in furnace chamber in the folding process; Earlier with producing by combustion chambers burn and getting into the combustion gases of furnace chamber and accomplish the oxidation sodium roasting by the gas mixture effect that the secondary air that comes from the furnace chamber bottom constitutes through the crater that is arranged in furnace wall brick masonary middle part; The material after the roasting is accomplished in the cooling air cooling that produces via the gas blower that is positioned at furnace wall brick masonary below again; Said secondary air is the formed wind of material after roasting is accomplished in the cooling air cooling, after be positioned at the dumping device discharge of furnace wall brick masonary below.Make the simple in structure of oxidation sodium calciner; Can dwindle initial outlay; Simultaneously, can control preferably maturing temperature and atmosphere again, overcome because of material coheres and caused kiln body ring formation or rake teeth to cohere drawbacks such as buildup; Make that the flexibility of device is very strong, have higher output and higher vanadium transformation efficiency simultaneously.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the utility model is elaborated, wherein:
Fig. 1 is the structure principle chart of the utility model shaft furnace formula oxidation sodium calciner.
Embodiment
See also Fig. 1.The utility model shaft furnace formula oxidation sodium calciner comprises: furnace wall brick masonary 1, furnace chamber 2, rotary feeder 3, oven dry bed 4, combustion chamber 5, gas blower 6, grate plate 7, dumping device 8 and smoke collection cover 9.Wherein:
Furnace wall brick masonary 1 vertically is provided with.In this specific embodiment, the xsect of the strong brick masonary of stove is rectangular.Furnace chamber 2 is surrounded by the furnace wall brick masonary and forms and vertically be provided with.In this specific embodiment, the xsect of furnace chamber is also rectangular, and the size of furnace chamber xsect is convergent, constant, flaring and convergent from top to bottom successively along short transverse and changes.The central authorities of furnace wall brick masonary 1 are provided with the water conservancy diversion partition wall 11 that said furnace wall brick masonary is divided into two.Furnace chamber 2 is divided into two by said water conservancy diversion partition wall.
Oven dry bed 4 is connected with said rotary feeder and court has a down dip so that material entering furnace chamber.The oven dry bed is used to make material under the self gravitation effect, to get into furnace chamber first, second can carry out drying to material, has strengthened follow-up roasting effect.In this specific embodiment, said oven dry bed comprises two, and is the centrosymmetry setting with said water conservancy diversion partition wall.The lower surface of oven dry bed also is provided with water beam 41.
The furnace wall brick masonary outside is located in combustion chamber 5, and said combustion chamber is provided with to be positioned at and communicates in the middle part of the furnace wall brick masonary and with said furnace chamber so that the combustion gases that combustion chambers burn produces get into the crater 51 of furnace chamber.The arranged outside of combustion chamber 5 has coal gas burner 52.In this specific embodiment, coal gas burner 52 has a plurality of, has promptly adopted many nozzle structures, makes that the flow of combustion gases is adjustable.
Grate plate 7 is connected with said water conservancy diversion partition wall lower end and tilts to down and connects said dumping device.Said gas blower is positioned at said grate plate below, and said grate plate is provided with intake opening 71.Intake opening 71 evenly is provided with, thereby the cooling air that makes gas blower produce can evenly blow into furnace chamber.The purpose that the grate plate is obliquely installed is to make the completion cooled material of roasting entering dumping device under the self gravitation effect.
The utility model shaft furnace formula oxidation sodium roasting method is: the material of making behind the ball feeds into towards the oven dry bed that has a down dip through the rotary feeder that is positioned at furnace wall brick masonary top; After the oven dry bed is dry, under the effect of material self gravitation, get into and surround in the vertical furnace chamber that forms by the furnace wall brick masonary; Material is in furnace chamber in the folding process; Earlier with producing by combustion chambers burn and getting into the combustion gases of furnace chamber and accomplish the oxidation sodium roasting by the gas mixture effect that the secondary air that comes from the furnace chamber bottom constitutes through the crater that is arranged in furnace wall brick masonary middle part; The material after the roasting is accomplished in the cooling air cooling that produces via the gas blower that is positioned at furnace wall brick masonary below again; Said secondary air is the formed heat exchange hot blast of material after roasting is accomplished in the cooling air cooling; Discharge smoke collection cover that the waste gas warp after the completion oxidation sodium is connected with furnace wall brick masonary top and the smoke discharging pipe discharge of being located at the smoke collection cover top after be positioned at the dumping device of furnace wall brick masonary below.
Said shaft furnace formula oxidation sodium roasting method also is included in said furnace wall brick masonary central authorities the water conservancy diversion partition wall that said furnace wall brick masonary is divided into two is set, and said furnace chamber is divided into two by said water conservancy diversion partition wall.
Said shaft furnace formula oxidation sodium roasting method also is included in water conservancy diversion partition wall lower end the grate plate that is connected and tilts to the said dumping device of connection with said water conservancy diversion partition wall lower end down is set; Said gas blower is positioned at said grate plate below; Said grate plate is provided with intake opening, and the cooling air that gas blower produces gets into furnace chamber through intake opening.
The xsect of said furnace wall brick masonary and furnace chamber is all rectangular, and the size of said furnace chamber xsect is convergent, constant, flaring and convergent from top to bottom successively along short transverse and changes.
Be that example specifies the utility model with the process for extracting vanadium flow process below.At first will make the vanadium titano-magnetite behind the ball or contain the scherbinaite briquet through through the rotary feeder feed, again via entering into furnace chamber after the oven dry bed drying.Vanadium titano-magnetite or contain in the process that the scherbinaite briquet slowly moves down in furnace chamber; With the combustion gases that come from the combustion chamber; And the gas mixture that constitutes with the warm air (being secondary air) that comes from the furnace chamber bottom carries out thermal exchange; And then accomplish the oxidation sodium roasting, make that the vanadium of various valence states is converted into pentavalent vanadium soluble in water in the vanadium titano-magnetite.From blasting in the vanadium titano-magnetite pelletizing bed of material along oblique below in the combustion gases of the certain temperature (800 ~ 1200 ℃) of combustion chamber crater by the furnace chamber both sides.The vanadium titano-magnetite pelletizing of accomplishing the roasting reaction slowly moves down again, and the cooling air cooling that is blasted by the bottom is after discharged by dumping device.The temperature of said gas mixture is 800 ~ 1200 ℃, and the ratio of the volumetric flow rate under combustion gases and the secondary weathercock condition is about 3 ~ 5:1.Gas blower produces cooling air through this air-distributing device of comb plate; Evenly be blown into vanadium titano-magnetite or contain in the scherbinaite briquet bed of material; Cool off getting into the material of accomplishing behind the oxidation sodium roasting furnace chamber bottom, with the vanadium titano-magnetite of the completion roasting reaction that moves down or contain the scherbinaite briquet and carry out thermal exchange.The warm air with certain temperature after the completion heat exchange promptly constitutes said secondary air; Mix with the combustion gases that come from the combustion chamber as replenishing of roasting band oxygen, make the vanadium titano-magnetite pelletizing realize the reaction of oxidation sodium roasting down at certain oxygen concn (volume(tric)fraction is 3% ~ 5%) and temperature (800 ~ 1200 ℃).And the waste gas of accomplishing at last behind the oxidation sodium roasting is discharged from smoke discharging pipe after smoke collection cover is collected.
The utlity model has following advantage:
1, initial outlay is less.The acid pellet shaft furnace in the reference ironmaking field and the comparative analysis of agglomerate rotary kiln initial outlay, under the identical industrial scale prerequisite, the initial outlay of shaft furnace is merely 50% ~ 70% of rotary kiln initial outlay.
2, maturing temperature and atmosphere can be carried out better controlled.Temperature of combustion gases (800 ~ 1200 ℃) and atmosphere (volume(tric)fraction 3% ~ 5% of oxygen); Recently being able to of volume(tric)fraction that on the one hand can be through combustion air in the combustion chamber and fuel controlled; On the other hand, the flow through the control secondary air carries out subcontrol.The volume(tric)fraction of combustion air and fuel is able to confirm than the net calorific value that will be based on fuel through the kind of fuel.
3, compare with rotary kiln or multiple hearth furnace; The pelletizing that employing has certain intensity carries out roasting; The control of temperature and atmosphere has better just to a certain degree avoided in the rotary kiln material ring formation or multiple hearth furnace inner tine for harrow material to cohere drawbacks such as buildup from root, makes calciner very strong to the flexibility of furnace charge simultaneously; The roasting of vanadium titano-magnetite can be adapted to, the production that contains the scherbinaite coal can be adapted to again.
4, the setting of water conservancy diversion partition wall makes the burning gas physical efficiency contact fully with the pelletizing bed of material, has avoided the generation of the middle dead stock column of furnace chamber.
5, the setting of oven dry bed makes and treats that the pelletizing of roasting is able to drying, has strengthened follow-up roasting effect.
6, because material is accomplished reaction in the folding process in furnace chamber; The gas-solid full contact, and maturing temperature and atmosphere are controlled, make calciner have higher vanadium transformation efficiency; Can reach more than 85%, output can be brought up to 1.5 tons/square metre hours to 2.0 tons/square metre hours.
7, good operational environment, the waste gas that roasting produces can focus on.
The method that the utility model shaft furnace formula oxidation sodium roasting method adopts is reasonable, and efficient, equipment is succinctly easy to operate, relatively is beneficial in the process for extracting vanadium flow process oxidation sodium roasting technology field and applies.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. shaft furnace formula oxidation sodium calciner, it is characterized in that: said shaft furnace formula oxidation sodium calciner comprises:
The furnace wall brick masonary that vertically is provided with;
Surround the furnace chamber that forms and vertically be provided with by the furnace wall brick masonary;
Be positioned at the rotary feeder that furnace wall brick masonary top is used for charging;
Be connected with said rotary feeder and towards having a down dip so that material gets into the oven dry bed of furnace chamber;
Be located at the combustion chamber in the furnace wall brick masonary outside, said combustion chamber is provided with to be positioned at and communicates in the middle part of the furnace wall brick masonary and with said furnace chamber so that the combustion gases that combustion chambers burn produces get into the crater of furnace chamber;
Be arranged in furnace wall brick masonary bottom center to produce cooling air in the gas blower of furnace chamber;
Be positioned at furnace wall brick masonary below and be used to discharge the dumping device of accomplishing oxidation sodium and cooled material.
2. shaft furnace formula oxidation sodium calciner according to claim 1; It is characterized in that: said shaft furnace formula oxidation sodium calciner also comprises the water conservancy diversion partition wall that is arranged on said furnace wall brick masonary central authorities and said furnace wall brick masonary is divided into two; Said furnace chamber is divided into two by said water conservancy diversion partition wall; Said rotary feeder be located at said water conservancy diversion partition wall directly over, said oven dry bed comprises two, and is the centrosymmetry setting with said water conservancy diversion partition wall.
3. shaft furnace formula oxidation sodium calciner according to claim 2; It is characterized in that: said shaft furnace formula oxidation sodium calciner also comprises the grate grate plate that is connected and tilts to the said dumping device of connection with said water conservancy diversion partition wall lower end down; Said gas blower is positioned at said grate plate below, and said grate plate is provided with intake opening.
4. shaft furnace formula oxidation sodium calciner according to claim 1 is characterized in that: said shaft furnace formula oxidation sodium calciner also comprises smoke collection cover that is connected with furnace wall brick masonary top and the smoke discharging pipe of being located at the smoke collection cover top.
5. shaft furnace formula oxidation sodium calciner according to claim 1; It is characterized in that: the xsect of said furnace wall brick masonary and furnace chamber is all rectangular, and the size of said furnace chamber xsect is convergent, constant, flaring and convergent from top to bottom successively along short transverse and changes.
6. shaft furnace formula oxidation sodium calciner according to claim 1, it is characterized in that: the arranged outside of said combustion chamber has at least two coal gas burners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204641711U CN202347064U (en) | 2011-11-21 | 2011-11-21 | Shaft furnace type oxidization and sodium treatment roasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204641711U CN202347064U (en) | 2011-11-21 | 2011-11-21 | Shaft furnace type oxidization and sodium treatment roasting device |
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| Publication Number | Publication Date |
|---|---|
| CN202347064U true CN202347064U (en) | 2012-07-25 |
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ID=46536081
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204641711U Expired - Fee Related CN202347064U (en) | 2011-11-21 | 2011-11-21 | Shaft furnace type oxidization and sodium treatment roasting device |
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|---|---|
| CN (1) | CN202347064U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409162A (en) * | 2011-11-21 | 2012-04-11 | 深圳市盛鑫源环保科技技术有限公司 | Method and device for roasting sodium oxide by using shaft furnace |
| CN109654874A (en) * | 2018-12-05 | 2019-04-19 | 东北大学 | A kind of vertical activation calciner of novel aluminium oxide and method of roasting |
-
2011
- 2011-11-21 CN CN2011204641711U patent/CN202347064U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409162A (en) * | 2011-11-21 | 2012-04-11 | 深圳市盛鑫源环保科技技术有限公司 | Method and device for roasting sodium oxide by using shaft furnace |
| CN109654874A (en) * | 2018-12-05 | 2019-04-19 | 东北大学 | A kind of vertical activation calciner of novel aluminium oxide and method of roasting |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20131121 |