CN206886688U - The system that a kind of carbide slag recycles - Google Patents
The system that a kind of carbide slag recycles Download PDFInfo
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- CN206886688U CN206886688U CN201720620433.6U CN201720620433U CN206886688U CN 206886688 U CN206886688 U CN 206886688U CN 201720620433 U CN201720620433 U CN 201720620433U CN 206886688 U CN206886688 U CN 206886688U
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Abstract
The utility model discloses the system that a kind of carbide slag recycles.The system includes pretreatment unit, pyrolysis oven, furnace of calcium carbide and acetylene generator；Pretreatment unit includes calciner and palletizing device；The spherical material entrance of the spherical material outlet connection pyrolysis oven of palletizing device, the feed pipe of the solid matter outlet connection furnace of calcium carbide of pyrolysis oven, the calcium carbide entrance of the calcium carbide outlet connection acetylene generator of furnace of calcium carbide, the calcium based raw material entrance of the carbide slag outlet connection calciner of acetylene generator.The utility model avoids oxidation reaction of the magnesium in furnace of calcium carbide by setting blast pipe in the thermosphere area of furnace of calcium carbide；The carbide slag remaining using acetylene is produced, as calcium based raw material, save production cost.
Description
Technical field
The utility model belongs to technical field of calcium carbide production, more particularly to the system that a kind of carbide slag recycles.
Background technology
Calcium carbide is a kind of important industrial chemicals, and at present, the industrial method for producing calcium carbide is mainly electrothermal way.Its first
The lime and coke for meeting calcium carbide production requirement carry out dispensing according to the specified ratio, and furnace charge then is delivered into electricity with bucket elevator
Stone stove furnace top bin, through charge tube to electric furnace charge, resistance heat of the furnace charge by electrode arc pad and furnace charge in electric furnace is anti-
Calcium carbide should be generated, calcium carbide timing is come out of the stove, puts to calcium carbide pot, after cooling, be broken into the granularity of certain specification requirement, that is, obtain
Finished product calcium carbide.
In the production process of calcium carbide, the impurity in raw material is serious to Influence of production.Impurity in raw material mainly includes oxygen
Change magnesium, silica, iron oxide, aluminum oxide etc., while furnace charge generates calcium carbide in electric reaction in furnace, various impurity are also carried out
Reaction.The reaction of various impurity not only consumes electric energy and carbon materials, and influences operation, destroys furnace bottom, particularly magnesia molten
Tabetisol is reduced into rapidly magnesium metal, and melting zone is turned into a strong high temperature reduction area, and magnesium vapor is from this red-hot area
When domain largely escapes, a portion magnesium reacts immediately with carbon monoxide, and generation magnesia releases heat-flash and forms high temperature, local
Duricrust is destroyed, and the liquid calcium carbide with impurity is corroded furnace bottom.
When producing acetylene using calcium carbide, substantial amounts of carbide slag can be given off, its main chemical is Ca (OH).It is right at present
Landfill method is used mostly in the processing method of unserviceable solid waste, occupies a large amount of soils, and enterprise need to pay largely
Expropriation of land and administration fee, but also can by the water source on osmosis pollution landfill yard periphery, make water source, soil alkalization, to existence
Environment damages.
Utility model content
In order to solve the above problems, the utility model it is expected to propose that one kind when calcium carbide produces, can avoid the magnesium in impurity
The system of oxidation reaction occurs in body of heater, while calcium carbide is produced as calcium based raw material by the use of the carbide slag for producing acetylene, saves
Raw material, reduce production cost.
One of the purpose of this utility model is to provide the system that a kind of carbide slag recycles, including pretreatment unit, heat
Solve stove, furnace of calcium carbide and acetylene generator；
The pretreatment unit includes calciner and palletizing device；The calciner includes calcium based raw material entrance and made
Ball calcium material exports；The palletizing device includes pelletizing raw coal entrance, pelletizing calcium material entrance and the outlet of spherical material；The calciner
The outlet of pelletizing calcium material connect the pelletizing calcium material entrance of the palletizing device；
The pyrolysis oven includes spherical material entrance and solid matter outlet；
The furnace of calcium carbide includes body of heater, feed pipe, blast pipe and calcium carbide outlet；The inner chamber of the body of heater includes thermosphere area,
During the furnace of calcium carbide work, the temperature in the thermosphere area is 1400~1600 DEG C；The feed pipe is deep by the top of the body of heater
Enter to the inner chamber of the body of heater；The blast pipe is located at the thermosphere area, the blast pipe through the body of heater side wall with it is outer
Portion connects；The blast pipe includes baffle plate, the inclined air inlet for being fixed on the blast pipe of the baffle plate；The calcium carbide outlet
Positioned at the bottom of the furnace of calcium carbide；
The acetylene generator includes calcium carbide entrance, acetylene outlet and carbide slag outlet；
The spherical material outlet of the palletizing device connects the spherical material entrance of the pyrolysis oven, the solids of the pyrolysis oven
Material outlet connects the feed pipe of the furnace of calcium carbide, and the calcium carbide of the calcium carbide outlet connection acetylene generator of the furnace of calcium carbide enters
Mouthful, the carbide slag outlet of the acetylene generator connects the calcium based raw material entrance of the calciner.The acetylene fills
Put and use dry acetylene generation process, carbide slag outlet is connected with the calcium based raw material entrance of the calciner using pipe conveyer.
Further, the pretreatment unit also includes drying device, and the drying device includes raw coal entrance and pelletizing
Raw coal exports, and the pelletizing raw coal outlet of the drying device connects the pelletizing raw coal entrance of the palletizing device.
System of the present utility model, further comprises flue and adsorbent equipment；The flue includes inlet exhaust gas and flue gas
Outlet；The adsorbent equipment includes smoke inlet；The tail gas that the gas outlet of the blast pipe of the furnace of calcium carbide connects the flue enters
Mouthful, the exhanst gas outlet of the flue connects the smoke inlet of the adsorbent equipment.
Further, the adsorbent equipment further comprises that High Temperature Gas exports, and the pyrolysis oven includes High Temperature Gas entrance,
The High Temperature Gas outlet of the adsorbent equipment connects the High Temperature Gas entrance of the pyrolysis oven.
As preferred scheme of the present utility model, the baffle plate of the blast pipe and the angle of horizontal direction are 30~60 °.
Another object of the present utility model is to provide a kind of method that carbide slag is recycled using said system, including such as
Lower step：
A, calcium based raw material feeding calciner is calcined, obtains pelletizing calcium material；The pelletizing calcium material is sent into pelletizing
Device, with pelletizing raw coal mixed pelletizing, obtain spherical material；
B, the spherical material is sent into pyrolysis oven, pyrolytic reaction occurs, obtain solid material；
C, the solid material is sent into furnace of calcium carbide, is heated to 2100~2300 DEG C, generate calcium carbide and the tail containing magnesium vapor
Gas, the tail gas containing magnesium vapor is discharged into the furnace of calcium carbide；
D, the calcium carbide is sent into acetylene generator, obtains acetylene and carbide slag；
E, it send the carbide slag as calcium based raw material into the calciner.
Preferably, this calciner uses pyrolysis gas, calcium carbide stove exhaust, natural gas or other fuel gas as fuel.
Further, pyrolysis reaction temperature is 500-900 DEG C, preferably 600-800 DEG C.
Preferably, step is included before step A：Raw coal is dried, obtains pelletizing raw coal；By the pelletizing raw coal
It is sent into the palletizing device.
Further, method of the present utility model also includes step：The tail gas containing magnesium vapor of the furnace of calcium carbide will be discharged
Cooled down by flue, oxidation reaction occurs, generates the flue gas containing magnesia；The flue gas is sent into adsorbent equipment, absorptive collection
Magnesia, discharge remaining High Temperature Gas.
Further, method of the present utility model also includes step：The High Temperature Gas is sent into the pyrolysis oven, as
The thermal source of pyrolytic reaction.
Specifically, the calcium based raw material includes the one or more in lime, lime stone, white lime and carbide slag.
The system and method that carbide slag provided by the utility model recycles, blast pipe is arranged on to the thermosphere of furnace of calcium carbide
Area, it is ensured that oxidation reaction does not occur for the magnesium vapor in tail gas, avoids the generation of charge level caking and the material that collapses；Blast pipe enters
Baffle plate is provided with the tube wall of gas port, partial cavity can be formed in the bed of material, tail gas is pooled in cavity, is easy to collect heel row
Go out；Using dust-removal cloth-bag adsorption and oxidation magnesium, high added value byproduct can be obtained；The remaining High Temperature Gas of adsorption and oxidation magnesium is used for spherical
The pyrolysis of material, the recycling of waste gas is realized, reduce production cost；System of the present utility model is by the way that calcium carbide stove exhaust is exported
It is arranged on furnace of calcium carbide middle and lower part so that calcium carbide stove exhaust temperature is at 1400~1600 DEG C or so, then the magnesia in raw material is through carbon
After reduction, furnace of calcium carbide is discharged as magnesium vapor, the purpose that raw material impurity is removed in calcium carbide production process is realized, so as to improve electricity
Rock ballast purity, be advantageous to carbide slag reuse production calcium carbide.Using the remaining carbide slag of acetylene is produced, as calcium based raw material, realize
The recycling of waste.
Brief description of the drawings
Fig. 1 is the schematic diagram of the system of the utility model embodiment；
Fig. 2 is the structural representation of the furnace of calcium carbide of the utility model embodiment；
Fig. 3 is the flow chart of the method for the utility model embodiment.
Embodiment
Below in conjunction with drawings and examples, specific embodiment of the present utility model is described in more details, with
Just the advantages of better understood when scheme and its various aspects of the present utility model.However, specific implementations described below side
Formula and embodiment are for illustrative purposes only, rather than to limitation of the present utility model.
As shown in figure 1, the utility model embodiment provides the system that a kind of carbide slag recycles, including pretreatment unit
1st, pyrolysis oven 2, furnace of calcium carbide 3, flue 4, adsorbent equipment 5 and acetylene generator 6.The system of the utility model embodiment, calcium carbide
Stove 3 discharges the tail gas containing magnesium vapor while producing calcium carbide, magnesia is obtained after handling tail gas, remaining High Temperature Gas can
Heat is provided for the pyrolytic reaction of pyrolysis oven；Using the remaining carbide slag of acetylene is produced, as calcium based raw material, waste is realized
Utilize, save production cost.
Pretreatment unit 1 includes drying device 11, calciner 12 and palletizing device 13.Pretreatment unit 1 is pyrolysis oven
Raw material is provided.
Drying device 11 includes raw coal entrance 111 and pelletizing raw coal outlet 112.Drying device 11 is used for former to carbon-based raw material
Coal is dried, and obtains pelletizing raw coal.
Calciner 12 includes calcium based raw material entrance 121 and pelletizing calcium material outlet 122.Calciner 12 can be to calcium based raw material
Roasting, obtain pelletizing calcium material.
Palletizing device 13 includes pelletizing raw coal entrance 131, pelletizing calcium material entrance 132 and spherical material outlet 133, drying device
The pelletizing raw coal entrance 131 of the 11 connection palletizing device 13 of pelletizing raw coal outlet 112, the pelletizing calcium material outlet of calciner 12
The pelletizing calcium material entrance 132 of 122 connection palletizing devices 13.Caused by pelletizing raw coal caused by drying device 11 and calciner 12
Pelletizing calcium material, palletizing device 13 is sent into, obtains the spherical material needed for pyrolysis oven.
Pyrolysis oven 2 includes spherical material entrance 21, solid matter outlet 22 and pyrolysis oil gas vent 23, the ball of palletizing device 13
The spherical material entrance 21 of the connection pyrolysis oven 2 of shape material outlet 133.After spherical material enters pyrolysis oven 2, it is heated and pyrolytic reaction occurs, it is raw
Into solid material and pyrolysis oil gas.Solid material discharges pyrolysis oven 2 by solid matter outlet 22.Pyrolysis oil gas passes through pyrolysis oil
Gas outlet 23 is collected, and after handling the pyrolysis oil gas of collection, can obtain the oil gas product of high added value.
As shown in Fig. 2 furnace of calcium carbide 3 includes body of heater 31, electrode 32, feed pipe 33, blast pipe 34 and calcium carbide outlet 35, pyrolysis
The feed pipe 33 of the solid matter outlet connection furnace of calcium carbide 3 of stove 2.Solid material is heated to high temperature in furnace of calcium carbide 3, occurs
Reaction, generate calcium carbide.Calcium carbide outlet 35 is located at the bottom of furnace of calcium carbide, the discharge for calcium carbide.
The inside of body of heater 31 is cavity, and when producing calcium carbide, the temperature of the internal cavity of body of heater 31 gradually reduces from bottom to top.Root
According to cavity temperature during production calcium carbide, cavity is from top to bottom divided into bed of material area 311, thermosphere area 312 and reaction zone 313,
The temperature in thermosphere area is 1400~1600 DEG C.In 1400~1600 DEG C of temperature range, it is ensured that the magnesium vapor in tail gas is not
Oxidation reaction occurs with CO.Bed of material area 311 is the preheating zone of material, and material is carried out in the gas that bed of material area 311 and bottom rise
Heat exchange.At 2000 DEG C or so, material reacts the temperature of reaction zone 313 in this region, generates calcium carbide, while in impurity
Reduction reaction occurs for magnesia, generates magnesium vapor.
Electrode 32 is embedded in the top of furnace roof 31, extends in the cavity of body of heater 31, but is not contacted with furnace bottom, is the life of calcium carbide
Production provides energy.
Feed pipe 33 is by being deep into the inner chamber of body of heater 31 at the top of body of heater.Feed pipe 33 is used to material being sent into body of heater.
Feed pipe 33 is arranged in around electrode 32, and the solid material that may be such that into body of heater is uniformly heated, and is advantageous to improve production
Efficiency, save the energy.
Blast pipe 34 is located at thermosphere area 312, for extracting the tail gas containing magnesium vapor out.Blast pipe 34 passes through the side wall of body of heater 31
With ft connection.Blast pipe 34 includes baffle plate, on the inclined air inlet tube wall for being fixed on blast pipe 34 of the baffle plate.Baffle plate with
The angle of horizontal plane is 30~60 °, and such design can be easy to tail gas to be pooled to cavity in material bed middle formation cavity area
Region, it is discharged to from blast pipe outside stove.
Flue 4 includes inlet exhaust gas 41 and exhanst gas outlet 42, and the blast pipe 34 of furnace of calcium carbide connects the inlet exhaust gas of flue 4
41.The tail gas containing magnesium vapor that body of heater is discharged by blast pipe 34 enters flue 4, rapid drop in temperature, when containing magnesium vapor
Exhaust temperature when being down to less than 1200 DEG C, react：Mg+CO=MgO+C, generate magnesia.
Adsorbent equipment 5 includes smoke inlet 51 and High Temperature Gas outlet 52, and the exhanst gas outlet 42 of flue 4 connects adsorbent equipment 5
Smoke inlet 51.Caused magnesia together enters adsorbent equipment 5 with other tail gas in flue 4, and adsorbent equipment 5 has absorption
Function, adsorbable collection magnesia, discharges remaining gas.The device of the utility model embodiment, it not only avoid calcium carbide original
The influence that magnesium addition produces to calcium carbide is aoxidized in material, and collects the accessory substance magnesia of high added value, obtains bigger warp
Ji benefit.The magnesia of absorption is by the discharge of magnesia outlet 53.
Pyrolysis oven 2 is provided with High Temperature Gas entrance 24, the High Temperature Gas of the connection pyrolysis oven 2 of High Temperature Gas outlet 52 of adsorbent equipment 5
Entrance 24.After the absorptive collection magnesia of adsorbent equipment 5, remaining high-temperature tail gas is sent into pyrolysis oven 2, as pyrolytic reaction
Thermal source, the recycling of remaining High Temperature Gas is realized, save production cost.
Acetylene generator 6 includes calcium carbide entrance 61, acetylene outlet 62 and carbide slag outlet 63, and the calcium carbide of furnace of calcium carbide 3 goes out
Mouth 35 connects the calcium carbide entrance 61 of acetylene generators 6, the connection calciners 12 of carbide slag outlet 63 of acetylene generator 6
Calcium based raw material entrance 121.The calcium carbide that furnace of calcium carbide 3 produces enters acetylene generator 6, generates acetylene, by the conveying of acetylene outlet 62
Stored to holding vessel.The remaining carbide slag of acetylene is produced, enters calciner 102 as calcium based raw material, for spherical material
Preparation, take full advantage of the product of system itself, accomplished to make the best use of everything, reduce production cost.
As shown in figure 3, on the other hand, the utility model embodiment provides one kind and recycles carbide slag using said system
Method, comprise the following steps：
1st, raw coal is dried, obtains pelletizing raw coal；Pelletizing raw coal is sent into palletizing device.
2nd, calcium based raw material feeding calciner is calcined, obtains pelletizing calcium material；Pelletizing calcium material is sent into palletizing device,
With pelletizing raw coal mixed pelletizing, spherical material is obtained, the mass ratio of pelletizing raw coal and pelletizing calcium material is 0.6~1.4:1, preferably 0.8
~1:1.
3rd, spherical material is sent into pyrolysis oven, pyrolytic reaction occurs, obtain solid material.
4th, solid material is sent into furnace of calcium carbide, is heated to 2100~2300 DEG C, generate calcium carbide and the tail gas containing magnesium vapor, will
Tail gas discharge furnace of calcium carbide containing magnesium vapor.
5th, calcium carbide is sent into acetylene generator, obtains acetylene and carbide slag.
6th, the calciner of step 2 is sent into using carbide slag as calcium based raw material.
7th, the tail gas containing magnesium vapor for discharging furnace of calcium carbide is cooled down by flue, oxidation reaction occurs, generation contains magnesia
Flue gas；Flue gas is sent into adsorbent equipment, absorptive collection magnesia, discharges remaining High Temperature Gas.
8th, High Temperature Gas is sent into pyrolysis oven, the thermal source as pyrolytic reaction.
Specifically, the calcium based raw material in step 2 includes the one or more in lime, lime stone, white lime and carbide slag.
In step 3, pyrolysis reaction temperature be 500-900 DEG C, preferably 600-800 DEG C, for example, 650 DEG C, 700 DEG C,
750 DEG C, those skilled in the art can select as the case may be.
Major impurity is silica and magnesia etc. in carbide slag, and carbide slag sintering temperature is 600~800 DEG C.
Embodiment 1
Middle low order fine coal, using somewhere jet coal, composition such as table 1, As-received refers to the state for receiving coal in table, typically
Coal is being exploited and can spray a large amount of water in transportation, so, the measure of full water is the coal of As-received；Butt refers to coal
The coal benchmark that charcoal obtains after fully drying, does not now have moisture substantially in coal.
The jet coal composition of table 1
| Project | Unit | Numerical value | Remarks |
| Quan Shui | Wt% | 5.33 | As-received |
| Fixed carbon | Wt% | 55.7 | Butt |
| Volatile matter | Wt% | 37.2 | Butt |
| Ash content | Wt% | 7.1 | Butt |
Lime stone is calcined, obtains lime, stone ash composition such as table 2：
The lime composition of table 2
| TFe/% | CaO/% | MgO/% | SiO2/ % | Al2O3/ % | MnO2/ % | SO3/ % | P2O5/ % | Other/% |
| 0.32 | 91.7 | 2.41 | 1.62 | 0.55 | 0.11 | 0.02 | 0.03 | 3.24 |
1st, after jet coal is dried, it is well mixed with lime, the mass ratio of jet coal and lime is 0.93：1, mixed
Material, pelletizing processing is carried out to mixed material, obtains spherical material.
2nd, spherical material is delivered into pyrolysis oven, using the High Temperature Gas of adsorbent equipment discharge as pyrolysis thermal source, spherical material be heated to
700 DEG C or so, the pyrolysis gas and pyrolysis oil of pyrolytic reaction, output solid material and high added value occurs.
3rd, high-temp solid material is delivered in closed calcium carbide furnace, material is heated to 2200 DEG C by the heat release of electrode open arc
Left and right, produce calcium carbide, while the tail gas containing magnesium vapor of the high temperature of output；Tail gas is by being arranged at furnace of calcium carbide side middle and lower part
Blast pipe discharge furnace of calcium carbide outside, blast pipe top sets horizontal downward baffle plate, and baffle plate is 45 ° with horizontal line angle, calcium carbide
The tail gas tapping temperature containing magnesium vapor is 1500 DEG C or so in stove.
4th, after the tail gas containing magnesium vapor is by flue, temperature is down to 1200 DEG C or so, and oxidation reaction, generation oxidation occur for magnesium
Magnesium.
5th, the flue gas containing magnesia enters adsorbent equipment, obtains the high added value magnesium oxide product of by-product content about 58%.
Contain calcium carbide 80.9%, gas forming amount 301L/kg in product calcium carbide.
6th, calcium carbide caused by furnace of calcium carbide, dry acetylene generator, output acetylene and carbide slag, acetylene are delivered to after cooling
Storage tank storage is delivered to after purified processing.
7th, carbide slag is delivered into calciner, used as lime raw material, lime is obtained after 700 DEG C of roastings.
It should be noted that each embodiment above by reference to described by accompanying drawing is only illustrating the utility model rather than limit
The scope of the utility model processed, it will be understood by those within the art that, do not departing from spirit of the present utility model and model
The modification carried out on the premise of enclosing to the utility model or equivalent substitution, all should cover within the scope of the utility model.
In addition, signified outer unless the context, the word occurred in the singular includes plural form, and vice versa.In addition, except non-specifically
Explanation, then all or part of of any embodiment can combine all or part of of any other embodiment and use.
Claims (5)
1. the system that a kind of carbide slag recycles, it is characterised in that including pretreatment unit, pyrolysis oven, furnace of calcium carbide and acetylene
Generating means；
The pretreatment unit includes calciner and palletizing device；The calciner includes calcium based raw material entrance and pelletizing calcium
Material outlet；The palletizing device includes pelletizing raw coal entrance, pelletizing calcium material entrance and the outlet of spherical material；The calciner is made
The outlet of ball calcium material connects the pelletizing calcium material entrance of the palletizing device；
The pyrolysis oven includes spherical material entrance and solid matter outlet；
The furnace of calcium carbide includes body of heater, feed pipe, blast pipe and calcium carbide outlet；The inner chamber of the body of heater includes thermosphere area；It is described
Feed pipe is by being deep into the inner chamber of the body of heater at the top of the body of heater；The blast pipe is located at the thermosphere area, the exhaust
Side wall and ft connection of the pipe through the body of heater；The blast pipe includes baffle plate, and the baffle plate is inclined to be fixed on the row
The air inlet of tracheae；The calcium carbide outlet is positioned at the bottom of the furnace of calcium carbide；
The acetylene generator includes calcium carbide entrance, acetylene outlet and carbide slag outlet；
The spherical material outlet of the palletizing device connects the spherical material entrance of the pyrolysis oven, and the solid material of the pyrolysis oven goes out
Mouth connects the feed pipe of the furnace of calcium carbide, and the calcium carbide outlet of the furnace of calcium carbide connects the calcium carbide entrance of the acetylene generator,
The carbide slag outlet of the acetylene generator connects the calcium based raw material entrance of the calciner.
2. system according to claim 1, it is characterised in that the pretreatment unit further comprises drying device, institute
Stating drying device includes raw coal entrance and the outlet of pelletizing raw coal, and the pelletizing raw coal outlet of the drying device connects the pelletizing dress
The pelletizing raw coal entrance put.
3. system according to claim 1, it is characterised in that further comprise flue and adsorbent equipment；
The flue includes inlet exhaust gas and exhanst gas outlet；
The adsorbent equipment includes smoke inlet；
The gas outlet of the blast pipe of the furnace of calcium carbide connects the inlet exhaust gas of the flue, the exhanst gas outlet connection institute of the flue
State the smoke inlet of adsorbent equipment.
4. system according to claim 3, it is characterised in that the adsorbent equipment further comprises that High Temperature Gas exports, institute
Stating pyrolysis oven includes High Temperature Gas entrance, and the High Temperature Gas outlet of the adsorbent equipment connects the High Temperature Gas entrance of the pyrolysis oven.
5. system according to claim 1, it is characterised in that the baffle plate of the blast pipe and the angle of horizontal direction are 30
~60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720620433.6U CN206886688U (en) | 2017-05-31 | 2017-05-31 | The system that a kind of carbide slag recycles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720620433.6U CN206886688U (en) | 2017-05-31 | 2017-05-31 | The system that a kind of carbide slag recycles |
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| Publication Number | Publication Date |
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| CN206886688U true CN206886688U (en) | 2018-01-16 |
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ID=61320963
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055538A (en) * | 2017-05-31 | 2017-08-18 | 神雾环保技术股份有限公司 | The system and method that a kind of carbide slag is recycled |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055538A (en) * | 2017-05-31 | 2017-08-18 | 神雾环保技术股份有限公司 | The system and method that a kind of carbide slag is recycled |
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