CN205953530U - Carbide slag purification recycling system - Google Patents
Carbide slag purification recycling system Download PDFInfo
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- CN205953530U CN205953530U CN201620331154.3U CN201620331154U CN205953530U CN 205953530 U CN205953530 U CN 205953530U CN 201620331154 U CN201620331154 U CN 201620331154U CN 205953530 U CN205953530 U CN 205953530U
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- carbide slag
- raw material
- carbide
- powdery
- purification
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Abstract
The utility model relates to a carbide slag purification recycling system. The system is including the pretreatment of raw material unit, gas melting furnace, acetylene generation unit, the carbide slag purification unit that connect gradually, wherein, the carbide slag export of carbide slag purification unit with the likepowder calcium base feed inlet of pretreatment of raw material unit is connected, the pretreatment of raw material unit is equipped with likepowder calcium base feed inlet, likepowder iron feed inlet, likepowder carbon back feed inlet and blend stock export. The utility model discloses utilize gas melting furnace production carbide to combining together the production of ferrosilicon generator system and carbide, making the whole accessory substance ferrosilicon that turn into of impurity silica in the carbide slag, carbide slag after the purification can not only recycle, has reduced carbide manufacturing cost moreover by a wide margin, in addition, raise the stove bottom because the conversion of sila matter can effectively prevent a large amount of deposits of carborundum, avoid the oven iron -clad, flow equipment damages such as material mouth and cooling pan.
Description
Technical field
This utility model is related to a kind of carbide slag purification reclaiming system, belongs to carbide slag extractive technique
Field.
Background technology
Because carbide is in the large-scale use of China, it is producing the acetylene a large amount of powder of output simultaneously
Shape carbide slag, carbide slag main component is Ca (OH)2, it is commonly used in building materials at present, produce cement,
And cement industry belongs to one of superfluous industry in China, only make as power plant desulfurization agent on a small quantity
With.Substantial amounts of carbide slag inferiorization uses, and greatly wastes calcium aptitude source, brings tight simultaneously
Heavily contaminated.How effectively to remove impurity in carbide slag so as to can be efficiently utilized, become
For one of current carbide manufacturing enterprise problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of carbide slag to purify reclaiming system.Melted using combustion gas
Melt stove and produce carbide, and the combination that ferrosilicon generting machanism is produced with carbide, make miscellaneous in carbide slag
Matter silicon dioxide is completely converted into by-product ferrosilicon, and the carbide slag after purification can not only reclaim profit
With, and significantly reduce carbide production cost；Simultaneously as the conversion of sila matter can be effective
Prevent a large amount of deposition of carborundum from raising furnace bottom, it is to avoid furnace wall iron-clad, material flowing nozzle and cooling pan etc. set
Standby damage.
To achieve these goals, this utility model adopts the following technical scheme that：
A kind of carbide slag purifies reclaiming system, including the feed material preparation units being sequentially connected, combustion
Gas melting furnace, acetylene generating unit, carbide slag purifier units；Wherein, described carbide slag purification
The carbide slag outlet of unit is connected with the powdered calcium based raw material entrance of described feed material preparation units
Connect；
Described feed material preparation units are provided with powdered calcium based raw material entrance, powdery ferriferous raw material enters
Mouth, the carbon-based feed(raw material)inlet of powdery and mixed material outlet.
Adjoint multiple side reactions can occur during carbon-based raw material generates carbide with calcio raw material,
This utility model utilizes described carbide slag purification reclaiming system by ferrosilicon generting machanism and carbide
Production combines, and gradually rises with temperature of charge in combustion gas melting furnace, can make in raw material
There is serial reaction in the ferrum in carbon and powdery ferriferous raw material in silica impurity and raw material, raw
Become by-product ferrosilicon, gained ferrosilicon will discharge combustion gas melting furnace with carbide；Afterwards containing ferrosilicon
Carbide further generate acetylene and and carbide slag, then the carbide slag containing ferrosilicon is purified
Remove impurity, the carbide slag after purification can return to material processing unit and recycled.Using this practicality
New described system can successfully avoid raising furnace bottom because of a large amount of deposition of carborundum, damages furnace wall ferrum
The problem of the equipment such as shell, material flowing nozzle and cooling pan, the carbide slag after simultaneously purifying can reclaim profit
With significantly reducing carbide production cost.
In carbide slag purification reclaiming system described in the utility model, described feed material preparation units
Inside set agitating device, for by powdered calcium based raw material, powdery ferriferous raw material, the carbon-based raw material of powdery
Mix homogeneously.
In carbide slag purification reclaiming system described in the utility model, described combustion gas melting furnace is provided with
Powdery mixed material import, exhanst gas outlet, oxygen-containing gas entrance, fuel gas inlet, carbide liquid go out
Mouthful；It is provided with oxygen-containing gas nozzle and gas nozzle, described oxygen-containing gas in described combustion gas melting furnace
Nozzle is connected with described oxygen-containing gas entrance, and described gas nozzle is connected with described fuel gas inlet；
Oxygen-containing gas combustion heat release is met in combustion gas in stove, by this heating blends material.
In carbide slag purification reclaiming system described in the utility model, described carbide slag purifier units
Including segregation apparatuss；Described segregation apparatuss are pneumatic separation device or concentration equipment, by selecting crude drugs with winnower or magnetic
Mode is selected to separate ferrosilicon in carbide slag, the carbide slag after purification is as powdered calcium based raw material
Return to feed material preparation units.
This utility model also provides above-mentioned carbide slag to purify the specifically used method of recovery system, bag
Include following steps：
(1) by carbon-based for powdery raw material, powdered calcium based raw material, powdery irony raw material drying, roasting
After burning, screening, put in the agitating device of feed material preparation units, mix homogeneously；
(2) powdery mixed material is sent into combustion gas melting furnace, reaction generates carbide and by-product
Ferrosilicon, gained ferrosilicon discharges combustion gas melting furnace with carbide；
(3) acetylene generating unit, output acetylene gas are entered by the carbide of combustion gas melting furnace output
Body and carbide slag, acetylene gas send into storage tank storage after treatment, and the carbide slag containing ferrosilicon
Then it is sent to carbide slag purifier units；
(4) in carbide slag purifier units, silicon in carbide slag is reclaimed by selecting crude drugs with winnower or magnetic separation mode
Ferrum, the carbide slag after purification continues quilt as the carbon-based raw materials recovery of powdery to feed material preparation units
Using.
Wherein, gradually rise with temperature of charge in combustion gas melting furnace, the carbon-based raw material in raw material
With calcio raw material generate carbide, during with occur multiple side reactions, including in raw material
Silicon dioxide and raw material in carbon and powdery ferriferous raw material in ferrum there is serial reaction, generate
Ferrosilicon with carbide discharge combustion gas melting furnace；Carbide further generates acetylene and and carbide afterwards
Slag, after the purified remove impurity of the carbide slag containing ferrosilicon, returns material processing unit reuse.
Wherein, in step (1), the carbon-based raw material of described powdery is by raw coal, coke or semi-coke
One or more of be mixed to get.
Wherein, in step (1), described powdered calcium based raw material is by Calx, limestone, ripe
One or more of Calx or carbide slag are mixed to get.
Wherein, in step (1), the carbon-based raw material of described powdery, powdered calcium based raw material, powdery
The mass ratio of ferriferous raw material is 0.5～1.2:0.9～2:0.003～0.05.
Wherein, in step (1), in powdery ferriferous raw material, iron content is more than 95%.
As one of preferred embodiment, described carbide slag purifies the method for work of recovery system
Comprise the steps：
(1) by carbon-based for powdery raw material, powdered calcium based raw material, powdery irony raw material drying, roasting
After burning, screening, put in the agitating device of feed material preparation units, mix homogeneously；
(2) powdery mixed material is sent into combustion gas melting furnace, reaction generates carbide and by-product
Ferrosilicon, gained ferrosilicon discharges combustion gas melting furnace with carbide；
(3) acetylene generating unit, output acetylene gas are entered by the carbide of combustion gas melting furnace output
Body and carbide slag, acetylene gas send into storage tank storage after treatment, and the carbide slag containing ferrosilicon
Then it is sent to carbide slag purifier units；
(4) in carbide slag purifier units, silicon in carbide slag is reclaimed by selecting crude drugs with winnower or magnetic separation mode
Ferrum, the carbide slag after purification continues quilt as the carbon-based raw materials recovery of powdery to feed material preparation units
Using；
Wherein, in step (1), the carbon-based raw material of described powdery is by raw coal, coke or semi-coke
One or more of be mixed to get；Described powdered calcium based raw material be by Calx, limestone,
One or more of Calx or carbide slag are mixed to get；Iron content in powdery ferriferous raw material
More than 95%；The carbon-based raw material of described powdery, powdered calcium based raw material, the quality of powdery ferriferous raw material
Than for 0.5～1.2:0.9～2:0.003～0.05.
Carbide slag purification recovery system described in the utility model has the advantages that：
First, carbide slag purification recovery system described in the utility model can directly utilize granulated carbide
Raw materials for production produce carbide in combustion gas melting furnace, not only reduce cost of material, and using combustion
Gas substitutes electric power, effectively reduces fuel cost；
Second, silicon dioxide reacts generation carborundum with the carbon in raw material, and powdery ferriferous raw material
In ferrum can with silicon carbide reactor generate ferrosilicon, thus preventing carborundum a large amount of cvd furnace bottom, lift
Rise furnace bottom；Avoid the device damage such as furnace wall iron-clad, material flowing nozzle and cooling pan simultaneously；
3rd, extract the impurity ferrosilicon in carbide slag by magnetic separation or selecting crude drugs with winnower, both can obtain by-product
Thing ferrosilicon；Carbide slag after purification can be reclaimed again and carry out carbide production recycling；
4th, carbide slag purification recovery system described in the utility model can directly adopt granulated carbide
Raw materials for production produce the technique of carbide in combustion gas melting furnace, without moulding process.
Brief description
Fig. 1 is the structural representation that carbide slag described in the utility model purifies reclaiming system.
Fig. 2 is combustion gas melting furnace structural representation described in the utility model.
Fig. 3 is the workflow diagram that carbide slag described in the utility model purifies reclaiming system.
In figure：1st, feed material preparation units；2nd, combustion gas melting furnace；21st, powdery mixed material
Import；22nd, exhanst gas outlet；23rd, oxygen-containing gas entrance；24th, fuel gas inlet；25th, carbide
Liquid exports；3rd, acetylene generating unit；4th, carbide slag purifier units.
Specific embodiment
Following examples are used for this utility model is described, but are not limited to model of the present utility model
Enclose.
Embodiment 1
The present embodiment provides a kind of carbide slag to purify reclaiming system, as shown in figure 1, including successively
The feed material preparation units of connection, combustion gas melting furnace, acetylene generating unit, carbide slag purification are single
Unit；Wherein, the carbide slag outlet of described carbide slag purifier units and described feed material preparation units
Powdered calcium based raw material entrance be connected；
Described feed material preparation units are provided with powdered calcium based raw material entrance, powdery ferriferous raw material enters
Mouth, the carbon-based feed(raw material)inlet of powdery and mixed material outlet.
Agitating device is set, for by powdered calcium based raw material, powdery in described feed material preparation units
Ferriferous raw material, powdery carbon-based raw material mix homogeneously.
Described combustion gas melting furnace is provided with powdery mixed material import 21, exhanst gas outlet 22, oxygenous
Body entrance 23, fuel gas inlet 24, carbide liquid outlet 25；It is provided with oxygen-containing in described combustion gas melting furnace
Gas nozzle and gas nozzle, as shown in Fig. 2 described oxygen-containing gas nozzle is oxygenous with described
Body entrance connects, and described gas nozzle is connected with described fuel gas inlet；Combustion gas is melted in described combustion gas
Melt in stove and meet oxygen-containing gas combustion heat release, by this heating blends material.
Described carbide slag purifier units include segregation apparatuss；Described segregation apparatuss be pneumatic separation device or
Ferrosilicon in carbide slag is separated, after purification by concentration equipment by selecting crude drugs with winnower or magnetic separation mode
Carbide slag returns to feed material preparation units as powdered calcium based raw material.
Embodiment 2
The present embodiment provides system purification described in a kind of utilization embodiment 1 to reclaim the side of carbide slag
Method, as shown in figure 3, comprise the steps：
(1) in feed material preparation units, by dried semi-coke, Calx and ferriferous raw material
Mix homogeneously, semi-coke：Calx：Steel cuttings=0.63:1:0.009 (mass ratio), roasting, screening
Afterwards, put in the agitating device of feed material preparation units, mix homogeneously；
(2) powder mixed material feeds from combustion gas melting furnace upper feed inlet, by oxygen-containing gas
Entrance is passed through oxygen, and fuel gas inlet is passed through natural gas, and natural gas meets oxygen combustion heat release in stove,
Heating blends material heats up, and temperature of charge gradually rises, when temperature of charge is increased to
1700～2200 DEG C about when, occur carbide reaction of formation, response time 25min, carbide life
During product, along with substantial amounts of side reaction, including the silicon dioxide in raw material and raw material
There is serial reaction in the ferrum in middle carbon and ferriferous raw material, generate by-product ferrosilicon and with carbide product
By bottom discharge hole for discharge, broken after cooling, tail gas is discharged by combustion gas melting furnace top gas outlet,
Enter gas purification, dust removing units.
Acetylenogen. 80.33%, gas forming amount 299L/kg is contained in gained carbide.
(3) carbide after cooling down enters acetylene generating unit, output acetylene gas and contain silicon
The carbide slag of ferrum, acetylene gas send into storage tank storage after treatment, and the carbide slag containing ferrosilicon
Then it is sent to carbide slag purifier units；
(4) in carbide slag purifier units, reclaimed in carbide slag by selecting crude drugs with winnower or magnetic separation mode
Ferrosilicon, the carbide slag after purification continues as the carbon-based raw materials recovery of powdery to feed material preparation units
It is utilized；After testing, in carbide slag, impurity content is about 5%.
Wherein, in step (1), the carbon-based raw material of described powdery is semi-coke, and its main character is shown in
Table 1.
The carbon-based raw material main character of table 1
| Project | Unit | Numerical value | Remarks |
| Quan Shui | Wt% | 5.33 | As-received |
| Fixed carbon | Wt% | 85.3 | Butt |
| Volatile matters | Wt% | 7.2 | Butt |
| Ash | Wt% | 7.5 | Butt |
The former coal ash analysis of table 2
Described powder calcio raw material is the Calx of CaO content 91.7%.
Table 3 Calx component analyses
Described powdery ferriferous raw material uses the steel cuttings of iron content 98%, raw material granularity：0.5～3mm.
Through comparing, existing calcium carbide production method is compared using method described in the utility model and (gives birth to
Calx and carbon raw material, in furnace of calcium carbide, rely on high arc temperature fusing reaction to generate carbide),
In gained carbide slag, total impurities content fall is up to 35%, SiO2It is (former that content declines about 90%
Most of SiO in material2Generate ferrosilicon with ferriferous raw material and carbon-based raw material reaction), thus may be used
See, carborundum can be prevented effectively from using carbide slag described in the utility model purification reclaiming system a large amount of
Be deposited on the problem that furnace bottom leads to furnace bottom lifting, it also avoid simultaneously furnace wall iron-clad, material flowing nozzle and
The device damage such as cooling pan；And ferrosilicon in carbide slag is extracted by magnetic separation or selecting crude drugs with winnower mode, not only
Obtain by-product ferrosilicon, and efficiently remove impurity in carbide slag, purify carbide slag, so that
Obtain carbide slag preferably to be recycled, significantly reduce carbide production cost.
Although, above with a general description of the specific embodiments to this utility model
Made detailed description, but on the basis of this utility model, can to some modifications of work or
Improve, this will be apparent to those skilled in the art.Therefore, without departing from this
These modifications or improvements on the basis of utility model spirit, belong to this utility model
Claimed scope.
Claims (4)
1. a kind of carbide slag purifies reclaiming system it is characterised in that include being sequentially connected is former
Material pretreatment unit, combustion gas melting furnace, acetylene generating unit, carbide slag purifier units；Wherein,
The carbide slag outlet of described carbide slag purifier units and the powdered calcium of described feed material preparation units
Based raw material entrance is connected；
Described feed material preparation units are provided with powdered calcium based raw material entrance, powdery ferriferous raw material enters
Mouth, the carbon-based feed(raw material)inlet of powdery and mixed material outlet.
2. carbide slag according to claim 1 purification reclaiming system is it is characterised in that institute
State and in feed material preparation units, set agitating device, for will be former to powdered calcium based raw material, powdery irony
Material, powdery carbon-based raw material mix homogeneously.
3. carbide slag according to claim 1 purification reclaiming system is it is characterised in that institute
State combustion gas melting furnace and be provided with powdery mixed material import, exhanst gas outlet, oxygen-containing gas entrance, combustion
Gas entrance, carbide liquid outlet；
It is provided with oxygen-containing gas nozzle and gas nozzle, described oxygen-containing gas in described combustion gas melting furnace
Nozzle is connected with described oxygen-containing gas entrance, and described gas nozzle is connected with described fuel gas inlet.
4. carbide slag according to claim 1 purification reclaiming system is it is characterised in that institute
State carbide slag purifier units and include segregation apparatuss；
Described segregation apparatuss are pneumatic separation device or concentration equipment, by selecting crude drugs with winnower or magnetic separation mode by electricity
In rock ballast, ferrosilicon is separated, and the carbide slag after purification returns to raw material as powdered calcium based raw material
Pretreatment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620331154.3U CN205953530U (en) | 2016-04-18 | 2016-04-18 | Carbide slag purification recycling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620331154.3U CN205953530U (en) | 2016-04-18 | 2016-04-18 | Carbide slag purification recycling system |
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| CN205953530U true CN205953530U (en) | 2017-02-15 |
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| CN201620331154.3U Expired - Fee Related CN205953530U (en) | 2016-04-18 | 2016-04-18 | Carbide slag purification recycling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731461A (en) * | 2016-04-18 | 2016-07-06 | 神雾环保技术股份有限公司 | Carbide slag purifying and recycling system and method |
| CN107285316A (en) * | 2017-07-17 | 2017-10-24 | 神雾环保技术股份有限公司 | A kind of system and method for reclaiming carbide liquid sensible heat |
-
2016
- 2016-04-18 CN CN201620331154.3U patent/CN205953530U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731461A (en) * | 2016-04-18 | 2016-07-06 | 神雾环保技术股份有限公司 | Carbide slag purifying and recycling system and method |
| CN107285316A (en) * | 2017-07-17 | 2017-10-24 | 神雾环保技术股份有限公司 | A kind of system and method for reclaiming carbide liquid sensible heat |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20190418 |
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| CF01 | Termination of patent right due to non-payment of annual fee |