CN103274218A - Vacuum industrial ball absorbing machine - Google Patents
Vacuum industrial ball absorbing machine Download PDFInfo
- Publication number
- CN103274218A CN103274218A CN2013101650572A CN201310165057A CN103274218A CN 103274218 A CN103274218 A CN 103274218A CN 2013101650572 A CN2013101650572 A CN 2013101650572A CN 201310165057 A CN201310165057 A CN 201310165057A CN 103274218 A CN103274218 A CN 103274218A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- heat
- inhaled
- ball
- ball machine
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention relates to a heating furnace heat storage ball replacing device, in particular to a vacuum industrial ball absorbing machine, and belongs to the field of burning equipment. The vacuum industrial ball absorbing machine comprises a suction tube (6), a dust cleaning device (4), a vacuum tube (3), a fan (1), an exhaust tube (2), a ball containing barrel (7), a rack (8) and a control box (5). The suction tube (6) is connected with the dust cleaning device (4) which is connected with an inlet of the fan (1) through the vacuum tube (3). An outlet of the fan (1) is connected with the exhaust tube (2). A discharge outlet (9) is formed in the lower portion of the dust cleaning device (4). The ball containing barrel (7) is arranged under the discharge outlet (9). According to the vacuum industrial ball absorbing machine, a cover at the top of a heat storage box is fully considered, heat storage balls are taken out and installed back from the opening, so that a side portion of the heat storage box is prevented from being opened, and refractory bricks are prevented from being detached. Consequently, the difficult problem that in the prior art, heat storage balls are hard to take out and install back is solved.
Description
Technical field
The invention belongs to the combustion equipment field, particularly, relate to more changing device of a kind of heating furnace heat-storing sphere---vacuum industry is inhaled the ball machine.
Background technology
Regenerative Combustion Technology is used at many molten aluminium stoves, heating furnace as a kind of physics heat recovery technology, domestic and international many hot rolling mill heating furnaces have use at present, have all used heat-accumulating burner in transforming or be newly-built early stage as hot rolling mills such as Japanese Nippon Steel, U.S. Bu Luomu burner section, Baosteel, Shoudu Iron and Steel Co, Wuhan Iron and Steel Plant, Ma Gang, wine steel, Ji steel, elder brother's steel.The energy-conservation principle of heat-accumulating burner is to control by periodic reverse, utilize the alumina globule (being heat-storing sphere) in the heat storage tank that the waste heat in the waste gas is stored, reach energy-conservation effect thereby improve the burned air temperature with the burned air interchange of heat again, so the state of heat-storing sphere there is very significant effects to the performance of heat-accumulating burner heat efficiency.
Heat storage medium must be changed or be cleaned in use for some time, thereby guarantees the energy-saving effect of heat-accumulating burner.But with regard to pertinent literature, also there is not the concrete detailed technology about the replacing cleaning of heat-storing sphere at present, have only U.S. BLOOM company that the step of the cleaning screening of heat-storing sphere is announced: to be filled with water to clean heat-storing sphere with bucket, then rake is stirred and pick broken heat-storing sphere, re-use putting into heat storage tank after the heat-storing sphere oven dry at last.This technology is cleaned the heat-storing sphere negligible amounts of screening at every turn, and the efficient of the poor effect of cleaning, screening is low, therefore can only be less at the heat-storing sphere consumption, use under the slow or long-time chance that stops production of enterprise's rhythm of production.
Heat-storing sphere is the heat transferring medium in the heat storage tank of heat-accumulating burner bottom, this medium regularly (the early-stage Study display cycle is 24 to 28 months) cleans heat-storing sphere or the superficial dust of removing damage (or broken), and the heat-storing sphere of additional same weight, with the heat exchange effect that guarantees heat-accumulating burner with energy savings, thereby and be the basis that keeps heat-accumulating burner smooth combustion to guarantee ordinary production.Because the heat storage tank of heat-accumulating burner is box type construction at present, the method that present hot rolling mill is changed heat-storing sphere is that the wicket of heat storage tank sidepiece is opened, fire brick that it is inner could take out heat-storing sphere after removing then, the side door fire brick that cleaning needs after finishing will remove early stage again lays again, and the sidepiece wicket could return the heat-storing sphere (see figure 4) of packing into after installing behind the uncover of top.This method complexity and efficient are low, and bigger to the refractory material damage of heat storage tank sidepiece.
But since at present the replacing cleaning technique of heat-storing sphere is still continued to use more original manually take out, the method for manual screening, the poor effect of cleaning and the difficulty of screening is big, efficient is low.Hot rolling mill heat-accumulating burner use amount is big at present, if still lacking the actv. heat-storing sphere changes and cleaning technique, it is very big not only the stove of heating furnace to be repaiied progress influence, and can't guarantee the replacing cleaning performance of heat-storing sphere, has also influenced the normal use of heat-accumulating burner in hot rolling.
Summary of the invention
The present invention is just in order to address the above problem, by designing and developing this heat-storing sphere aspiration device---and vacuum industry is inhaled the ball machine, with heat-storing sphere easily sucking-off in the heat storage tank, thereby has solved the difficult problem that heat-storing sphere in the past took out and returned dress.
Purpose of the present invention realizes by adopting following technical scheme:
A kind of vacuum industry is inhaled the ball machine, it is characterized in that, this vacuum industry is inhaled the ball machine and included suction pipe, deashing device, vacuum lamp, blower fan, freeing pipe, Sheng ball bucket, frame, control box; Suction pipe connects deashing device, and deashing device connects fans entrance by vacuum lamp, and the outlet of blower fan is connected with freeing pipe, and the deashing device bottom has discharging opening, and described Sheng ball bucket is placed in the discharging opening below.
Further, have filtering net in the described deashing device, described deashing device is pulse filter.
Further, described suction pipe, deashing device, blower fan are made by bearing 300 ℃ and above high temperature material.
Further, described blower fan is vacuum vortex blower fan, and it can be with density 〉=3.7g/cm
3Heat-storing sphere be pumped into vacuum industry and inhale in the ball machine.
Further, be equiped with silencer on the described vacuum lamp.
Further, the vacuum blowdown valve is housed in the negative pressure system at described vacuum lamp place.
Further, described Sheng ball bucket is connected on this vacuum industry suction ball machine in the mode of cramp assembling and disassembling, contains on the ball bucket castor is housed.
Further, this vacuum industry is inhaled the ball facility the security interlocking protection device.
Further, this vacuum industry is inhaled the ball machine and is adopted the modular package assembly, uses the carbon steel part plastic-blasting to handle.
Further, when using this vacuum industry to inhale the ball machine, suction nozzle one end of vacuum industry being inhaled ball machine suction pipe inserts in the accumulation of heat casing to the heat-storing sphere surface from the open top of heat storage tank, start vacuum industry then and inhale the power supply of ball machine, at this moment blower fan is started working, form negative pressure in the vacuum lamp, under the effect of suction, the heat-storing sphere in the heat storage tank is inhaled into vacuum industry and inhales in the ball machine; Heat-storing sphere enters deashing device inside through suction pipe, and under the effect of deashing device, it is separated and filtered by the filtering net in the deashing device to be attached to the dust stratification on heat-storing sphere surface; Finish heat-storing sphere after the surperficial ash disposal in discharging opening falls into the Sheng ball bucket of deashing device below; Wait to contain and open bucket behind the full heat-storing sphere of ball barreled and buckle and pour out heat-storing sphere, will contain the ball bucket again and buckle, by that analogy till with the whole sucking-offs of the heat-storing sphere in the heat storage tank.
Vacuum industry of the present invention is inhaled the lid that the ball machine takes into full account the heat storage tank top, taking-up and time dress of heat-storing sphere are all carried out from this opening, utilize this device heat-storing sphere easily sucking-off in the heat storage tank can be avoided the heat storage tank sidepiece is opened and taken apart the work of fire brick.Vacuum industry of the present invention is inhaled the ball machine and can be finished the big (〉=3.7g/cm of bulk density
3), the suction operation of the heat-storing sphere of surface temperature height (〉=300 ℃), greatly solved and be difficult to a difficult problem of in heat storage tank, taking out heat-storing sphere in the prior art.Improved workman's working environment simultaneously, reduced labour intensity, reduced expenses, increased work efficiency.Through measuring and calculating, it is also with following advantage:
1. the cost of the heat-storing sphere of whole stove replacing descends more than 50%.
2. the refractory material that reduces heat storage tank repeats to remove erected cost more than 90%.
3. can be stove and repair the work-hours of saving heat-storing sphere replacing more than 50%.
4. guarantee the replacement cycle of heat-storing sphere, thereby stablize heat-accumulating burner fractional energy savings (cleaning fractional energy savings improves more than 1.5%).
Description of drawings
Fig. 1 is the schematic diagram that vacuum industry of the present invention is inhaled the ball machine.
Fig. 2 is the structural representation that vacuum industry of the present invention is inhaled the ball machine.
Fig. 3 is the real scene shooting figure that vacuum industry of the present invention is inhaled the ball machine.
Fig. 4 is the real scene shooting figure of heat storage tank.
Fig. 5 is the real scene shooting figure of suction pipe suction heat-storing sphere of the present invention.
Among the figure, 1, blower fan, 2, freeing pipe, 3, vacuum lamp, 4, deashing device, 5, control box, 6, suction pipe, 7, contain the ball bucket, 8, frame, 9, discharging opening.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing.
Fig. 1 is the schematic diagram that vacuum industry of the present invention is inhaled the ball machine, and Fig. 2 is the structural representation that vacuum industry of the present invention is inhaled the ball machine.By among Fig. 1, Fig. 2 as can be seen, vacuum industry of the present invention is inhaled the ball machine and is included suction pipe 6, deashing device 4, vacuum lamp 3, blower fan 1, freeing pipe 2, contains ball bucket 7, frame 8, control box 5 etc.Suction pipe 6 connects deashing device 4, and deashing device 4 connects an end of vacuum lamp 3, and the other end of vacuum lamp 3 connects blower fan 1 entrance, and the exit end of blower fan 1 is connected with freeing pipe, and deashing device 4 bottoms have discharging opening 9, and described Sheng ball bucket 7 is placed in discharging opening 9 belows.
Have filtering net in the deashing device 4 of the present invention, described deashing device is preferably pulse filter.
In use, suction nozzle one end of suction pipe 6 is inserted in the accumulation of heat casing to heat-storing sphere surface (see figure 5) from the open top of heat storage tank, start vacuum industry then and inhale the power supply of ball machine, at this moment blower fan 1 is started working, form negative pressure in the vacuum lamp 3, under the effect of suction, the heat-storing sphere in the heat storage tank is inhaled into vacuum industry and inhales in the ball machine.Heat-storing sphere enters deashing device 4 inside through suction pipe 6, and under the effect of deashing device 4, it is separated and filtered by the filtering net in the deashing device 4 to be attached to the dust stratification on heat-storing sphere surface.And finish heat-storing sphere after the surperficial ash disposal in discharging opening 9 falls into the Sheng ball bucket 7 of deashing device 4 belows.Wait to contain ball bucket 7 and fill and open bucket behind the heat-storing sphere and buckle and pour out heat-storing sphere, will contain ball bucket 7 again and buckle, by that analogy till with the whole sucking-offs of the heat-storing sphere in the heat storage tank.
Because the bulk density of heat-storing sphere is bigger, generally can reach 3.7g/cm
3, for guaranteeing heat-storing sphere by sucking-off continuously, this air quantity and blast that vacuum industry is inhaled the used blower fan 1 of ball machine has proposed certain requirement.As preferably, vacuum industry of the present invention is inhaled the blower fan 1 of ball machine can select vacuum vortex blower fan, and it can be with density 〉=3.7g/cm
3Heat-storing sphere be pumped into vacuum industry and inhale in the ball machine.
The vacuum industry of a certain model of table 1 is inhaled the technical performance parameter of ball machine
| Power supply | Main engine power | Handle air quantity | Degree of vacuum |
| 380V/50Hz | 15Kw | 900m 3/h | 31Kpa |
In addition, because under many circumstances, the heat-storing sphere in the heat storage tank also has higher temperature, can reach under some situation 300 ℃ and more than.Also can be successfully with the heat-storing sphere sucking-off under this kind condition in order to satisfy, this vacuum industry is inhaled the ball machine need satisfy high temperature resistant requirement.Vacuum industry of the present invention is inhaled the suction pipe 6, blower fan 1, deashing device 4 of ball machine etc. and is constituted by high temperature material, can satisfy the condition of normal operation under 300 ℃ and above operating mode.
The vacuum blowdown valve is housed in the negative pressure system at vacuum lamp 3 places, when avoiding negative pressure system to stop up blower fan 1 and total system is worked the mischief.
Simultaneously, in order to reduce noise, be equiped with silencer at vacuum lamp 3.
In addition, Sheng ball bucket 7 is connected on this vacuum industry suction ball machine in the mode of cramp assembling and disassembling, contains on the ball bucket 7 castor is housed, and can guarantee that like this discharging is quick, exempt to shut down.
Vacuum industry of the present invention is inhaled the ball machine and is adopted the modular package assembly, uses the carbon steel part plastic-blasting to handle.
Heat-storing sphere face area after the use thicker dust stratification, as the iron scale ash, in the process of sucking-off, in order to prevent that the iron scale ash is to the pollution of peripheral working environment and to inspection operation personnel's influence, vacuum industry of the present invention is inhaled the environmental protection design that the ball machine has adopted anti-airborne dust, farthest reduces dust pollution.
Vacuum industry of the present invention is inhaled the ball facility the security interlocking protection device, can fill at heat-storing sphere, automatic interlock is shut down under the situations such as motor temperature superelevation or electric current overload, and have emergency stop push button in order in case of emergency use.
Vacuum industry of the present invention is inhaled the control step of ball machine:
1. the each line space of advancing of using of vacuum industry suction ball machine is tried, and as ready uses after often becoming a full member.
2. vacuum industry is inhaled the ball machine and connected power supply, to connecting suction pipe.
3. suction pipe suction nozzle one end is inserted in the accumulation of heat casing to the heat-storing sphere surface from the open top of heat storage tank, start the power supply that vacuum industry is inhaled the ball machine then, artificial mobile suction nozzle is inhaled ball.
4. contain and open bucket behind the full heat-storing sphere of ball barreled and buckle and pour out heat-storing sphere, will contain the ball bucket then again and buckle, by that analogy till with the whole sucking-offs of the heat-storing sphere in the heat storage tank.
5. power cut-off was packed up suction pipe after the work of suction ball was finished, and the equipment amplifier is arrived specify storage position.
Vacuum industry of the present invention is inhaled the ball machine and can be finished the big (〉=3.7g/cm of bulk density
3), the suction operation of the heat-storing sphere of surface temperature height (〉=300 ℃), greatly solved and be difficult to a difficult problem of in heat storage tank, taking out heat-storing sphere in the prior art.Improved workman's working environment simultaneously, reduced labour intensity, reduced expenses, increased work efficiency.
The present invention is not limited to above-mentioned embodiment, if various changes of the present invention and modification are not broken away from the spirit and scope of the present invention, if these are changed and modification belongs within claim of the present invention and the equivalent technologies scope, then the present invention also is intended to comprise these changes and modification.
Claims (10)
1. a vacuum industry is inhaled the ball machine, it is characterized in that, this vacuum industry is inhaled the ball machine and included suction pipe (6), deashing device (4), vacuum lamp (3), blower fan (1), freeing pipe (2), contains ball bucket (7), frame (8), control box (5); Suction pipe (6) connects deashing device (4), deashing device (4) connects blower fan (1) entrance by vacuum lamp (3), the outlet of blower fan (1) is connected with freeing pipe (2), and deashing device (4) bottom has discharging opening (9), and described Sheng ball bucket (7) is placed in discharging opening (9) below.
2. vacuum industry according to claim 1 is inhaled the ball machine, it is characterized in that described deashing device has filtering net in (4), and described deashing device is pulse filter.
3. vacuum industry according to claim 1 and 2 is inhaled the ball machine, it is characterized in that, described suction pipe (6), deashing device (4), blower fan (1) are made by bearing 300 ℃ and above high temperature material.
4. vacuum industry according to claim 1 and 2 is inhaled the ball machine, it is characterized in that described blower fan (1) is vacuum vortex blower fan, and it can be with density 〉=3.7g/cm
3Heat-storing sphere be pumped into vacuum industry and inhale in the ball machine.
5. vacuum industry according to claim 1 and 2 is inhaled the ball machine, it is characterized in that described vacuum lamp is equiped with silencer on (3).
6. vacuum industry according to claim 1 and 2 is inhaled the ball machine, it is characterized in that, in the negative pressure system at described vacuum lamp (3) place the vacuum blowdown valve is housed.
7. vacuum industry according to claim 1 and 2 is inhaled the ball machine, it is characterized in that, described Sheng ball bucket (7) is connected on this vacuum industry suction ball machine in the mode of cramp assembling and disassembling, contains on the ball bucket (7) castor is housed.
8. vacuum industry according to claim 1 and 2 is inhaled the ball machine, it is characterized in that, this vacuum industry is inhaled the ball facility the security interlocking protection device.
9. vacuum industry according to claim 1 and 2 is inhaled the ball machine, it is characterized in that, this vacuum industry is inhaled the ball machine and adopted the modular package assembly, uses the carbon steel part plastic-blasting to handle.
10. vacuum industry according to claim 1 and 2 is inhaled the using method of ball machine, it is characterized in that, suction nozzle one end of vacuum industry being inhaled ball machine suction pipe (6) inserts in the accumulation of heat casing to the heat-storing sphere surface from the open top of heat storage tank, start vacuum industry then and inhale the power supply of ball machine, at this moment blower fan (1) is started working, form negative pressure in the vacuum lamp, under the effect of suction, the heat-storing sphere in the heat storage tank is inhaled into vacuum industry and inhales in the ball machine; Heat-storing sphere enters deashing device (4) inside through suction pipe (6), and under the effect of deashing device (4), it is separated and filtered by the filtering net in the deashing device (4) to be attached to the dust stratification on heat-storing sphere surface; Finish heat-storing sphere after the surperficial ash disposal in discharging opening (9) falls into the Sheng ball bucket (7) of deashing device (4) below; Wait to contain ball bucket (7) and fill and open bucket behind the heat-storing sphere and buckle and pour out heat-storing sphere, will contain ball bucket (7) again and buckle, by that analogy till with the whole sucking-offs of the heat-storing sphere in the heat storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101650572A CN103274218A (en) | 2013-05-08 | 2013-05-08 | Vacuum industrial ball absorbing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101650572A CN103274218A (en) | 2013-05-08 | 2013-05-08 | Vacuum industrial ball absorbing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103274218A true CN103274218A (en) | 2013-09-04 |
Family
ID=49056882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101650572A Pending CN103274218A (en) | 2013-05-08 | 2013-05-08 | Vacuum industrial ball absorbing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103274218A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217205A (en) * | 2018-03-16 | 2018-06-29 | 芜湖职业技术学院 | Ocean ball collection arrangement |
| CN108758634A (en) * | 2018-06-29 | 2018-11-06 | 广州龙鑫蓄热工业炉有限公司 | Heat-storage type burner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011184126A (en) * | 2010-03-08 | 2011-09-22 | Ihi Transport Machinery Co Ltd | Pneumatic transfer device for bulk material |
| CN202079564U (en) * | 2011-05-05 | 2011-12-21 | 上海梅山钢铁股份有限公司 | Device used for replacing small heat accumulating balls of heat accumulating type heating furnace |
| CN202609584U (en) * | 2012-03-30 | 2012-12-19 | 日氟荣航空新材料（上海）有限公司 | Vacuum suction device |
| CN202687493U (en) * | 2012-05-16 | 2013-01-23 | 南京淮腾机械科技有限公司 | Vacuum conveyor |
| CN202784858U (en) * | 2012-07-12 | 2013-03-13 | 苏州康斯坦普工程塑料有限公司 | Energy-saving vacuum intake machine |
| CN203419551U (en) * | 2013-05-08 | 2014-02-05 | 河南三松瓷业有限公司 | Industrial vacuum ball suction machine |
-
2013
- 2013-05-08 CN CN2013101650572A patent/CN103274218A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011184126A (en) * | 2010-03-08 | 2011-09-22 | Ihi Transport Machinery Co Ltd | Pneumatic transfer device for bulk material |
| CN202079564U (en) * | 2011-05-05 | 2011-12-21 | 上海梅山钢铁股份有限公司 | Device used for replacing small heat accumulating balls of heat accumulating type heating furnace |
| CN202609584U (en) * | 2012-03-30 | 2012-12-19 | 日氟荣航空新材料（上海）有限公司 | Vacuum suction device |
| CN202687493U (en) * | 2012-05-16 | 2013-01-23 | 南京淮腾机械科技有限公司 | Vacuum conveyor |
| CN202784858U (en) * | 2012-07-12 | 2013-03-13 | 苏州康斯坦普工程塑料有限公司 | Energy-saving vacuum intake machine |
| CN203419551U (en) * | 2013-05-08 | 2014-02-05 | 河南三松瓷业有限公司 | Industrial vacuum ball suction machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217205A (en) * | 2018-03-16 | 2018-06-29 | 芜湖职业技术学院 | Ocean ball collection arrangement |
| CN108758634A (en) * | 2018-06-29 | 2018-11-06 | 广州龙鑫蓄热工业炉有限公司 | Heat-storage type burner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102519051B (en) | Flue gas spraying, purifying and heat recovering system for coal burning boiler | |
| CN204767947U (en) | Biomass boiler tub sack cleaner of discharging fume | |
| CN2859431Y (en) | Intermittent combustion type casting waste sand roasting furnace | |
| CN103776270A (en) | Calcium carbide sensible heat recovery equipment and method for calcium carbide furnace | |
| CN104606971A (en) | Waste heat recycling type deduster | |
| CN103274218A (en) | Vacuum industrial ball absorbing machine | |
| CN203419551U (en) | Industrial vacuum ball suction machine | |
| CN105021051A (en) | Cupola afterheat utilization dust removal and desulphurization integrated system | |
| CN210952428U (en) | Automatic dust-removing cooler | |
| CN202511309U (en) | Smoke spraying purification and heat recovery system for coal-fired boiler | |
| CN209917496U (en) | Energy-concerving and environment-protective smelting furnace dust collecting equipment | |
| CN203798180U (en) | Calcium carbide furnace calcium carbide sensible heat recovery device | |
| CN103776271A (en) | Calcium carbide sensible heat recovery equipment for calcium carbide furnace | |
| CN204198772U (en) | A kind of dedusting of blast furnace gas and waste heat recycling system | |
| CN210198113U (en) | Clean high-efficient aluminium stove flue gas dust collector that melts | |
| CN214371780U (en) | Natural gas kiln waste heat recovery device for zinc oxide production | |
| CN210568451U (en) | Waste lithium battery pyrolysis flue gas energy-saving treatment device | |
| CN211601596U (en) | High-temperature dust removal system of brown corundum high-temperature smelting furnace | |
| CN210425072U (en) | Boiler deslagging and dedusting equipment for power plant | |
| CN209945048U (en) | Submerged arc furnace with dust removal function | |
| CN207486822U (en) | A kind of thermal accumulating incinerator RTO emission-control equipments | |
| CN107036451B (en) | Flue gas flow dividing device for electric furnace dust removal | |
| CN202105544U (en) | High-temperature resistant dust remover | |
| CN106568324B (en) | A kind of Gear Processing metallurgical furnace that ventilation effect is good | |
| CN101936666A (en) | Process and device for recovering complementary energy of silicon smelting furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130904 |