CN108031407A - Sulphur adder in a kind of sodium pyrosulfite production - Google Patents
Sulphur adder in a kind of sodium pyrosulfite production Download PDFInfo
- Publication number
- CN108031407A CN108031407A CN201711363755.8A CN201711363755A CN108031407A CN 108031407 A CN108031407 A CN 108031407A CN 201711363755 A CN201711363755 A CN 201711363755A CN 108031407 A CN108031407 A CN 108031407A
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- Prior art keywords
- sulphur
- upper frame
- adder
- support plate
- crushing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/007—Feed or outlet devices as such, e.g. feeding tubes provided with moving parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/02—Feed or outlet devices; Feed or outlet control devices for feeding measured, i.e. prescribed quantities of reagents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/14—Preparation of sulfites
- C01D5/145—Pyrosulfites or metabisulfites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The present invention discloses sulphur adder in a kind of sodium pyrosulfite production, it includes：Bucket type housing, crush structure, filtration and discharging structure；Bucket type housing is divided into upper frame and lower pars infundibularis；Crushing structure includes grinder and support plate, support plate is equipped with multiple through holes, support plate is equipped with the shielding plate of adjustable hole size, and grinder includes the motor being arranged on outside upper frame top and is connected with motor and is arranged on the crushing rod in upper frame, crushes rod and be equipped with crushing vane；Filtration, which is arranged on, to be crushed below structure, and filtration includes oscillator and the strainer being arranged in upper frame；Discharging structure includes the discharging valve block of truncated cone-shaped pedestal and the adjustable size being arranged between truncated cone-shaped pedestal upper end and feed opening, and a plurality of discharge channel is equipped between truncated cone-shaped pedestal top and bottom.The present invention enter combustion furnace in sulphur powder amount it is controllable, promote combustion furnace in sulphur powder completely burned, save combustion furnace in the energy consumption.
Description
Technical field
The present invention relates to sulphur adder in technical field of chemical, more particularly to a kind of production of sodium pyrosulfite.
Background technology
Needed in sodium pyrosulfite production process using sulfur burning production sulfur dioxide.Existing sulphur is inputted into sulfur burner
The simple auger conveyors of Shi Caiyong or conveyer belt conveying, the sulphur some of input is in granular form, sheet, block sulphur, sulphur
Sulphur particle is uneven, causes sulphur to burn in combustion furnace uneven, insufficient so that the sulfur dioxide gas purity drop of generation
It is low, concentration is unstable, and then influence sodium pyrosulfite the quality of production.
Some existing sulphur conveying equipments, as the Chinese invention patent of Application No. 201710306535.5 discloses one
There are an auger conveyor in kind of sulphur conveying burner, including combustion furnace, the combustion furnace side, on the auger conveyor
Equipped with feed hopper, the helical feed leaf of the auger conveyor is equipped with up and down pulverizes device, described to divide filtering layer to tilt down setting,
Described point of filtering layer lower end is sulphur powder passage, and the sulphur powder channel end connects combustion furnace, and the sulphur powder passage head end connection is aerobic
Gas import and air blower, the sulphur powder Channel front end are also associated with molten sulfur passage, and the molten sulfur passage connects combustion furnace, the liquid
The junction of sulphur passage and sulphur powder passage is equipped with heater, and the combustion furnace lower end is equipped with igniter at molten sulfur passage.This
The amount that the design sulphur of sample enters sulphur powder passage is not fixed, because the amount that sulphur enters in combustion furnace all differs all the time
Sample, so that it is difficult to control the inlet of oxygen, may cause sulfur burning insufficient or waste of energy.
The content of the invention
It is an object of the present invention to for the above-mentioned deficiency of the prior art, a kind of sulphur powder into combustion furnace is proposed
Measure it is controllable, promote combustion furnace in sulphur powder completely burned, save combustion furnace in the energy consumption sodium pyrosulfite production in sulphur
Sulphur adder.
The present invention solves its technical problem, and the technical solution of use is to propose that sulphur adds in a kind of sodium pyrosulfite production
Add device, it includes：Bucket type housing, the crushing structure being arranged in the bucket type housing, filtration and it is arranged on the bucket
Discharging structure below sandwich type element；The bucket type housing is divided into upper frame and lower pars infundibularis, the bucket type housing upper end be equipped with into
Material mouth, the bucket type housing lower end are equipped with feed opening；The crushing structure setting includes in the upper frame, the crushing structure
Grinder and the support plate being connected below the grinder and with the upper frame is arranged on, the support plate is equipped with multiple logical
Hole, the support plate are equipped with the shielding plate for adjusting the hole size, and the grinder includes being arranged on the upper frame top
Motor outside end and it is connected with the motor and is arranged on the crushing rod in the upper frame, the crushing rod is equipped with crushed leaves
Piece；The filtration is arranged on below the crushing structure, and the filtration includes being arranged on the concussion of upper frame outer wall
Machine and it is connected with the oscillator and is arranged on the strainer in upper frame；The discharging structure is connected with feed opening, the discharging
Structure includes unloading for truncated cone-shaped pedestal and the adjustable size that is arranged between the truncated cone-shaped pedestal upper end and the feed opening
Expect valve block, a plurality of discharge channel is equipped between the truncated cone-shaped pedestal top and bottom.
Preferably, the through hole is evenly distributed in the support plate, mounting portion, the screening are equipped with the support plate
Catch is arranged in the mounting portion.Such design can allow the not pulverized blade of shielding plate to influence and be moved, if
Shielding plate portion on the supporting plate, then crushing vane is likely to that shielding plate movement will be driven in crushing, so as to open through hole, makes
Filtration must be entered without completely pulverized sulphur, have impact on the operation of whole equipment.
Further preferably, the distance between the mounting portion and described support plate upper surface be less than the mounting portion with it is described
The distance between support plate lower surface.Mounting portion is near apart from upper surface, then be arranged on the inside shutter it is also near with upper surface, keep away
The sulphur for exempting from not crushed completely enters between shutter and support plate.
Preferably, the discharge channel is linearly arranged and straight line intersects with the central axes of the truncated cone-shaped pedestal, institute
Discharge channel is stated by gradually subtracting to close to the central axes, its angle α formed with the central axes away from the central axes
It is small.
Further preferably, the discharge channel away from the central axes to close to the central axes, its inner surface by rubbing
Coefficient is wiped gradually to increase.Since the length of discharge channel is different and angle is different, necessarily cause the tail of each discharge channel
Hold the amount of discharging different, different friction coefficient is set, can make it that the amount of the tail end discharging of each discharge channel is identical.
Preferably, it is equipped with flexible layer close to the crushing vane lower end of the support plate.So design, even if crushing vane
Shutter is touched, shutter will not be driven to move.
Preferably, the crushing rod can stretch up and down.So that it is more uniform to crush obtained Cosan.
Transverse sheet is crushed preferably, being equipped between the adjacent crushing vane.Accelerate to crush speed, such that crushing is more thorough
Bottom is uniform.
Preferably, elastic connection layer is equipped between the strainer circumference and the upper frame.During earthquake so that
Cosan will not be fallen between strainer and upper frame, ensure that the Cosan after filtering all meets burning condition.
Preferably, further including controller, the controller controls the size of the shielding plate adjusting through hole, described
Controller controls the discharge rate of the discharging valve block.During crushing, controller control shielding plate covers through hole completely, when having crushed
Cheng Hou, controller control shielding plate remove through hole, facilitate Cosan to fall；Controller controls discharging valve block so that Cosan exists
The energy consumption of burning fully, in saving combustion furnace in combustion furnace.
The present invention has the advantages that：
It 1. the setting of bucket type housing, can will crush, filtering, blanking are all concentrated in an equipment, bucket type housing will be divided into
Frame portion and lower pars infundibularis, crush and filtering is completed in upper frame, and blanking is completed by lower pars infundibularis.
2. the setting of support plate, on the one hand cooperate with grinder to complete crushed work, on the other hand set on it through hole with
Shutter, with filtration perfect adaptation so that can just complete to crush and filter in an equipment.
3. the setting of discharging valve block, is opened so that sulphur powder exists after a certain amount of sulphur powder can having been saved bit by bit in lower pars infundibularis
It always is into the amount in combustion furnace and stablizes constant, the size of adjusting discharging valve block, the amount of discharging can be adjusted, preferably
Adapt to a variety of combustion furnaces.
4. setting multiple discharge channels, scattered sulphur powder make it that burning is more abundant, reduces the waste of resource.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the top view of support plate；
Fig. 3 is the sectional view of support plate；
Fig. 4 is the structure diagram of truncated cone-shaped pedestal；
Fig. 5 is the top view of grinder.
In figure, 1, bucket type housing, 11, crush structure, 111, grinder, 1111, motor, 1112, crush rod, 11121, powder
Broken blade, 11122, crush transverse sheet, 112, support plate, 1121, through hole, 1122, shielding plate, 1123, mounting portion, 12, filtering knot
Structure, 121, oscillator, 122, strainer, 1221, elastic connection layer, 13, upper frame, 14, lower pars infundibularis, 15, feed inlet, 16, under
Material mouth, 2, discharging structure, 21, truncated cone-shaped pedestal, 211, discharge channel, 22, discharging valve block.
Embodiment
It is the specific embodiment of the present invention and with reference to attached drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment 1：
Sulphur adder in a kind of sodium pyrosulfite production as shown in Fig. 1 to 5, including bucket type housing 1, it is arranged on bucket type housing
Crushing structure 11, filtration 12 in 1 and the discharging structure 2 for being arranged on the lower section of bucket type housing 11.Bucket type housing can incite somebody to action
Crushing, filtering, blanking are all concentrated in an equipment, save production cost, and easy to operate.
Bucket type housing 1 divides to be completed for upper frame 13 and lower pars infundibularis 14, crushing and filtering in upper frame, and blanking is by lower leakage
Pan is completed.1 upper end of bucket type housing is equipped with feed inlet 15, and 1 lower end of bucket type housing is equipped with feed opening 16.Structure 11 is crushed to be arranged on
Upper frame 13, crushing structure 11 includes grinder 111 and is arranged on the lower section of grinder 111 and the support plate being connected with upper frame 13
112, support plate 112 is equipped with multiple through holes 1121, and support plate 112 is equipped with the shielding plate 1122 of 1121 size of adjustable through hole,
On the one hand collaboration grinder completes crushed work for the setting of support plate, through hole and shutter is on the other hand set on it, with mistake
Filter perfect structure to combine so that can just complete to crush and filtering in an equipment.Grinder 111 includes being arranged on upper frame 13
Motor 1111 outside top and it is connected with motor 1111 and is arranged on the crushing rod 1112 in upper frame 13, crushes and set on rod 1112
There is crushing vane 11121.Filtration 12, which is arranged on, crushes the lower section of structure 11, and filtration 12 includes being arranged on outside upper frame 13
The oscillator 121 of wall and it is connected with oscillator 121 and is arranged on the strainer 122 in upper frame 13.Discharging structure 2 and feed opening 16
It is connected, discharging structure 2 includes truncated cone-shaped pedestal 21 and is arranged on adjustable between 21 upper end of truncated cone-shaped pedestal and feed opening 16
The discharging valve block 22 of size, discharging valve block are opened after a certain amount of sulphur powder can having been saved bit by bit in lower pars infundibularis so that sulphur powder exists
It always is into the amount in combustion furnace and stablizes constant, the size of adjusting discharging valve block, the amount of discharging can be adjusted, preferably
A variety of combustion furnaces are adapted to, are equipped with a plurality of discharge channel 211 between 21 top and bottom of truncated cone-shaped pedestal, a plurality of discharging is led to
Road can disperse sulphur powder and make it that burning is more abundant, reduce the waste of resource.
Preferably, through hole 1121 is evenly distributed in support plate 112, mounting portion 1123 is equipped with support plate 112, is blocked
Piece 1122 is arranged in mounting portion 1123, the not pulverized blade of shielding plate can be allowed to influence and be moved, if shielding plate exists
Support plate top, then crushing vane is likely to that shielding plate movement will be driven in crushing, so as to open through hole so that not complete
Pulverized sulphur enters filtration entirely, have impact on the operation of whole equipment.
The distance between mounting portion 1123 and 112 upper surface of support plate are less than mounting portion 1123 and 112 lower surface of support plate
The distance between, mounting portion is near apart from upper surface, then be arranged on the inside shutter it is also near with upper surface, avoid incomplete
The sulphur of crushing enters between shutter and support plate.
Discharge channel 211 is linearly arranged and straight line intersects with the central axes of truncated cone-shaped pedestal 21, and discharge channel 211 is by remote
It is gradually reduced from central axes to close to central axes, its angle α 2111 formed with central axes.
Discharge channel 211 away from central axes to the friction coefficient close to central axes, its inner surface by gradually increasing, due to unloading
The length of material passage is different and angle is different, necessarily causes the amount of the tail end discharging of each discharge channel different, sets not
Same friction coefficient, can make it that the amount of the tail end discharging of each discharge channel is identical.
Flexible layer is equipped with close to 11121 lower end of crushing vane of support plate 112, is so designed, even if crushing vane contacts
To shutter, shutter will not be driven to move.
Crushing rod 1112 can stretch up and down so that the Cosan crushed is more uniform.
It is equipped between adjacent crushing vane 11121 and crushes transverse sheet 11122, accelerates crushing speed, so that crushing more thorough
Uniformly.
Elastic connection layer 1221 is equipped between 122 circumference of strainer and upper frame 13, during earthquake so that Cosan is not
It can be fallen between strainer and upper frame, ensure that the Cosan after filtering all meets burning condition.
Controller is further included, controller control shielding plate 1122 adjusts the size of through hole 1121, controller control discharge valve
The discharge rate of piece 22, during crushing, controller control shielding plate covers through hole completely, and after the completion of crushing, controller control hides
Catch removes through hole, facilitates Cosan to fall；Controller controls discharging valve block so that Cosan burn in combustion furnace it is abundant,
Save the energy consumption in combustion furnace.
Application method：Step 1：Controller control shielding plate blocks through hole completely, adds sulfur in lump form, opens motor, crushes
After the completion of, controller control shielding plate is moved into mounting portion, and sulphur powder enters strainer；Step 2：Open oscillator to be filtered, mistake
Cosan after filter enters lower pars infundibularis, the repeat step 1 in filtering；Step 3：It is to be filtered after a certain period of time, controller open
Discharging valve block carries out discharging and enters combustion furnace, and according to the combustion case in combustion furnace, controller control discharging valve block is opened big
It is small.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
Claims (10)
- A kind of 1. sulphur adder in sodium pyrosulfite production, it is characterised in that including：Bucket type housing（1）, be arranged on the bucket Sandwich type element（1）Interior crushing structure（11）, filtration（12）And it is arranged on the bucket type housing（11）The discharging knot of lower section Structure（2）；The bucket type housing（1）It is divided into upper frame（13）With lower pars infundibularis（14）, the bucket type housing（1）Upper end is equipped with charging Mouthful（15）, the bucket type housing（1）Lower end is equipped with feed opening（16）；The crushing structure（11）It is arranged on the upper frame （13）, the crushing structure（11）Including grinder（111）Be arranged on the grinder（111）Lower section and with the upper frame （13）Connected support plate（112）, the support plate（112）It is equipped with multiple through holes（1121）, the support plate（112）It is equipped with Adjust the through hole（1121）The shielding plate of size（1122）, the grinder（111）Including being arranged on the upper frame （13）Motor outside top（1111）With with the motor（1111）It is connected and is arranged on the upper frame（13）Interior crushing rod （1112）, the crushing rod（1112）It is equipped with crushing vane（11121）；The filtration（12）Described crush is arranged on to tie Structure（11）Lower section, the filtration（12）Including being arranged on upper frame（13）The oscillator of outer wall（121）With with the concussion Machine（121）It is connected and is arranged on upper frame（13）Interior strainer（122）；The discharging structure（2）With feed opening（16）It is connected, institute State discharging structure（2）Including truncated cone-shaped pedestal（21）Be arranged on the truncated cone-shaped pedestal（21）Upper end and the feed opening（16） Between adjustable size discharging valve block（22）, the truncated cone-shaped pedestal（21）Lead between top and bottom equipped with a plurality of discharging Road（211）.
- 2. sulphur adder in a kind of sodium pyrosulfite production according to claim 1, it is characterised in that：The through hole （1121）It is evenly distributed on the support plate（112）On, the support plate（112）It is interior to be equipped with mounting portion（1123）, it is described to block Piece（1122）It is arranged on the mounting portion（1123）It is interior.
- 3. sulphur adder in a kind of sodium pyrosulfite production according to claim 2, it is characterised in that：The mounting portion （1123）With the support plate（112）The distance between upper surface is less than the mounting portion（1123）With the support plate（112） The distance between lower surface.
- 4. sulphur adder in a kind of sodium pyrosulfite production according to claim 1, it is characterised in that：The discharging is led to Road（211）Linearly arrangement and straight line and the truncated cone-shaped pedestal（21）Central axes intersect, the discharge channel（211）By remote From the central axes to close to the central axes, its angle α formed with the central axes（2111）It is gradually reduced.
- 5. sulphur adder in a kind of sodium pyrosulfite production according to claim 4, it is characterised in that：The discharging is led to Road（211）By gradually increasing to the friction coefficient close to the central axes, its inner surface away from the central axes.
- 6. sulphur adder in a kind of sodium pyrosulfite production according to claim 1, it is characterised in that：Close to the branch Fagging（112）Crushing vane（11121）Lower end is equipped with flexible layer.
- 7. sulphur adder in a kind of sodium pyrosulfite production according to claim 1, it is characterised in that：The crushing rod （1112）It can stretch up and down.
- 8. sulphur adder in a kind of sodium pyrosulfite production according to claim 1, it is characterised in that：The adjacent powder Broken blade（11121）Between be equipped with crush transverse sheet（11122）.
- 9. sulphur adder in a kind of sodium pyrosulfite production according to claim 1, it is characterised in that：The strainer （122）Circumference and the upper frame（13）Between be equipped with elastic connection layer（1221）.
- 10. sulphur adder in a kind of sodium pyrosulfite production according to claim 1, it is characterised in that：Further include control Device processed, the controller control the shielding plate（1122）Adjust the through hole（1121）Size, the controller controls institute State discharging valve block（22）Discharge rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711363755.8A CN108031407B (en) | 2017-12-18 | 2017-12-18 | Sulphur adder in sodium metabisulfite production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711363755.8A CN108031407B (en) | 2017-12-18 | 2017-12-18 | Sulphur adder in sodium metabisulfite production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108031407A true CN108031407A (en) | 2018-05-15 |
| CN108031407B CN108031407B (en) | 2019-12-20 |
Family
ID=62099744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711363755.8A Active CN108031407B (en) | 2017-12-18 | 2017-12-18 | Sulphur adder in sodium metabisulfite production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108031407B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109019527A (en) * | 2018-10-11 | 2018-12-18 | 宣城市楷昂化工有限公司 | One kind burning sulphur blanking device |
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| KR20000025357A (en) * | 1998-10-10 | 2000-05-06 | 홍건희 | Preventing device for hopper from leaking dust |
| CN105480736A (en) * | 2015-12-25 | 2016-04-13 | 三一海洋重工有限公司 | Rotary discharging device and engineering equipment with rotary discharging device |
| CN105689044A (en) * | 2016-03-01 | 2016-06-22 | 江苏宏泰橡胶助剂有限公司 | Sulphur crusher |
| CN105689050A (en) * | 2016-03-01 | 2016-06-22 | 江苏宏泰橡胶助剂有限公司 | Sulphur smashing device |
| CN205392646U (en) * | 2016-03-19 | 2016-07-27 | 福建将乐天马生物质能源有限公司 | Integrated system of broken screening of coal stoving |
| CN206587876U (en) * | 2017-01-19 | 2017-10-27 | 江西桔王药业有限公司 | A kind of multi-functional automatic traditional Chinese medicine ultrafine grinding device |
-
2017
- 2017-12-18 CN CN201711363755.8A patent/CN108031407B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000025357A (en) * | 1998-10-10 | 2000-05-06 | 홍건희 | Preventing device for hopper from leaking dust |
| CN105480736A (en) * | 2015-12-25 | 2016-04-13 | 三一海洋重工有限公司 | Rotary discharging device and engineering equipment with rotary discharging device |
| CN105689044A (en) * | 2016-03-01 | 2016-06-22 | 江苏宏泰橡胶助剂有限公司 | Sulphur crusher |
| CN105689050A (en) * | 2016-03-01 | 2016-06-22 | 江苏宏泰橡胶助剂有限公司 | Sulphur smashing device |
| CN205392646U (en) * | 2016-03-19 | 2016-07-27 | 福建将乐天马生物质能源有限公司 | Integrated system of broken screening of coal stoving |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109019527A (en) * | 2018-10-11 | 2018-12-18 | 宣城市楷昂化工有限公司 | One kind burning sulphur blanking device |
| CN109019527B (en) * | 2018-10-11 | 2020-05-01 | 宣城市楷昂化工有限公司 | Burn sulphur glassware down |
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| Publication number | Publication date |
|---|---|
| CN108031407B (en) | 2019-12-20 |
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