CN101255564A - Drying method for ring-form calcining furnace - Google Patents
Drying method for ring-form calcining furnace Download PDFInfo
- Publication number
- CN101255564A CN101255564A CNA2007101796494A CN200710179649A CN101255564A CN 101255564 A CN101255564 A CN 101255564A CN A2007101796494 A CNA2007101796494 A CN A2007101796494A CN 200710179649 A CN200710179649 A CN 200710179649A CN 101255564 A CN101255564 A CN 101255564A
- Authority
- CN
- China
- Prior art keywords
- furnace
- temperature
- baker
- furnace chamber
- drying
- 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.)
- Granted
Links
- 238000001035 drying Methods 0.000 title claims abstract description 26
- 238000001354 calcination Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000011449 brick Substances 0.000 abstract description 12
- 239000004570 mortar (masonry) Substances 0.000 abstract description 10
- 239000004927 clay Substances 0.000 abstract description 6
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000031877 prophase Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000000470 constituent Substances 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- 235000009508 confectionery Nutrition 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Landscapes
- Furnace Details (AREA)
Abstract
The invention is a furnace-drying method for a ring type baking furnace, relates to a furnace-drying method for a 36-chamber ring type baking furnace in aluminum prebaked anode production. The invention is characterized in 360 furnace-baking curve is selected in the baking process, waste mature anode and qualified green body are mixed after the fifth chamber, igniting for furnace drying is started at 2# and 20# chambers, the temperature of a flue without green body furnace in the prophase of furnace drying rises in ladder form, normal furnace baking is about to finish, when the starting chamber becomes a 4P chamber, the furnace-drying curve transits to a normal curve. According to the invention, water in mortar and bricks are discharged slowly and uniformly to sinter the mortar and clay bricks integrally, so that the upper temperature and lower temperature of a furnace body is indeed unified, the furnace body is free from deformation and crackle, and the service life of the furnace is extended.
Description
Technical field
A kind of furnace drying method of ring-form calcining furnace relates to the furnace drying method of 36 Room ring-form calcining furnaces in a kind of pre-baked anode for aluminum production process.
Background technology
In the pre-baked anode for aluminum production process, newly-built ring-form calcining furnace because of containing certain moisture content in brick body and the mortar, needs to discharge moisture content with certain temperature and cycle, make mortar become as a whole with clay brick, and the assurance body of heater is indeformable, crackle not.But in baker process in the past, can't ensure the body of heater homogeneity of temperature up and down veritably, any discharge because of negative pressure control difficulty and a large amount of fugitive constituents causes the body of heater local temperature too high usually, makes body of heater premature deformations, sinking, influences the work-ing life of furnace chamber.
At present, in the baker process of stoving oven, mostly be two system's bakers (as 36 furnace chambers), at 1# and 19# furnace igniting, wherein at 1#, 2#, 3#, 19#, 20#, 21# adorns stopping composition, furnace chamber is all adorned qualified green compact on-load baker later on, the top temperature of quirk is controlled at 360 hours drying out curve of 1200～1250 ℃ usually, this drying out curve has following drawback: one, it is bigger to start furnace chamber sinking deflection, reach 50-100mm, in this process because of the supply of without preheating air in early stage, make the startup furnace chamber fire path temperature of baker be difficult to reach 1200～1250 ℃ of top temperatures, have only a large amount of supply Sweet natural gases and insulation to reach reluctantly, wherein less because of baker initial stage negative pressure again, caused body of heater upper strata temperature too high, and body of heater lower floor still is in very low temperature, caused whole body of heater temperature inequality up and down, the body of heater distortion is sunk; Its two, the four furnace chambers dress green compact, less because of negative pressure again in fugitive constituent a large amount of ejection times, temperature fast rise, make a large amount of heat accumulations at the 2P furnace chamber, make 2P furnace chamber temperature too high, anode heats up too fast, and controllable quality is difficult to guarantee; Its three, band green compact furnace chamber, because of early stage the preheated air amount not enough, cause the carbon anode temperature to be difficult to reach more than 1100 ℃, except in the pliotherm period long-time insulation could satisfy, this has caused the life cycle that has reduced refractory brick equally.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned prior art, a kind of moisture content that can slowly and evenly discharge in brick body and the mortar is provided, it is as a whole that mortar and clay brick are sintered into, ensure the body of heater homogeneity of temperature up and down veritably, guarantee indeformable, the crackle not of body of heater, the furnace drying method of ring-form calcining furnace that prolongs the work-ing life of stoving oven.
The objective of the invention is to be achieved through the following technical solutions.
A kind of furnace drying method of ring-form calcining furnace is characterized in that in its roasting process,
(1) 360 hours drying out curve of Cai Yonging are:
First section heating gradient is 2.5 ℃/h, and temperature is 65～210 ℃;
Second section heating gradient is 2.5 ℃/h, and temperature is 210～360 ℃;
The 3rd section heating gradient is 3.5 ℃/h, and temperature is 360～570 ℃
The 4th section heating gradient is 4.5 ℃/h, and temperature is 570～840 ℃;
The 5th section heating gradient is 5.5 ℃/h, and temperature is 840～1150 ℃;
The 6th section is holding-zone, is incubated 64 hours;
(2) in the on-load baker, behind the 5th furnace chamber, load in mixture with ripe scrap anode and qualified green compact; The ratio of loading in mixture is ripe scrap anode: green compact=1: 2;
(3) the igniting baker begins at 2# and 20# furnace chamber;
(4) baker is not in earlier stage with the stepped rising of the fire path temperature of green compact stove; And do not need to reach the top temperature of baker requirement.
(5) normal baker closes to an end, and when the startup furnace chamber becomes the 4P furnace chamber, carries out the transition to normalized curve by drying out curve.
Method of the present invention can prolong converter life, stops furnace chamber sinking and crackle, the particularly generation of two furnace chamber sinkage between drying-out period; Controlled the output of fugitive constituent by green compact and ripe method that loads in mixture, can stop the phenomenon of 3P furnace chamber temperature superelevation, reduced fugitive constituent and on tobacco pipe, adhere to, thereby reduce the probability that flue catches fire; Negative pressure control is simple, reduces the temperature difference of body of heater upper, middle and lower layer; Slowed down the heat-up rates before 200 ℃ of intensification initial stages in the heating curve, make in the mortar and clay brick in moisture content can fully slowly discharge, in case brick body and quirk wall cracking.Fuel natural gas consumption has certain decline, from 110m
3Reduce to 90m
3
Method of the present invention can slowly and evenly be discharged the moisture content in brick body and the mortar, and it is as a whole that mortar and clay brick are sintered into, ensures the up and down homogeneity of temperature of body of heater veritably, guarantees indeformable, the crackle not of body of heater, prolongs the work-ing life of stoving oven.
Embodiment
A kind of furnace drying method of ring-form calcining furnace, (1) formulates the drying out curve of science, and this curve adopts 360 hours curves, prolongs furnace drying time as much as possible, gets rid of the moisture content in mortar and the clay brick, guarantees stove quality.Curve is as follows:
First section heating gradient is 2.5 ℃/h, and temperature is 65～210 ℃;
Second section heating gradient is 2.5 ℃/h, and temperature is 210～360 ℃;
The 3rd section heating gradient is 3.5 ℃/h, and temperature is 360～570 ℃
The 4th section heating gradient is 4.5 ℃/h, and temperature is 570～840 ℃;
The 5th section heating gradient is 5.5 ℃/h, and temperature is 840～1150 ℃;
The 6th section is holding-zone, is incubated 64 hours;
(2) in order to control the output of fugitive constituent, the way that loads in mixture with ripe scrap anode and qualified green compact behind the 5th furnace chamber in the on-load baker is controlled the amount of fugitive constituent, controls fire path temperature with this;
(3) the igniting baker begins at 2# and 20# furnace chamber, can better control the baker negative pressure like this, also can avoid the influence of negative pressure the influence that is communicated with quirk and the baker process being fluctuateed because of causing from 1# and 19# stove baker;
(4) baker early stage can stepped rising with the fire path temperature of green compact stove such as 800-900-1000 ℃, and the furnace chamber that the 4th and the 5th furnace chamber are adorned ripe useless piece is controlled at 1000 ℃.To giving birth to the ripe anode that loads in mixture later on, the quirk top temperature is controlled at 1150 ℃ of curve requirement.
(5) normal baker closes to an end, and when the startup furnace chamber becomes the 4P furnace chamber, can carry out the transition to normalized curve by drying out curve.
Embodiment
Stove is Room 36 8 quirks, 7 hoppers, the wide * of long * is dark=and the 5298*780*5496mm open roasting furnace.
The concrete mode of baker:
(1) baking chimney: with the firewood baking, storing temperature is 150-200 ℃ at place, flue bottom.Dried by the fire back cleaning residue.
(2) steel flue gas duct and connection quirk: be to rely on spraying device special, send into by special-purpose wedding agent high pressure and to be ejected on the working face, water content is at 25-30%, through seasoning natural intensity raising 40% after 4-8 hour, natural intensity is brought up to 60-70% after 48 hours, and the intensity of passing in time after 100 hours just can reach more than 80%.Temperature curve according to overall baker requires it is not affected.Require the steel flue gas duct spraying to reach more than 100 hours when therefore, drying by the fire flue.Just can reach intensity fully in 4-6 hour in the time of 150 ℃ of baker flue-gas temperatures in theory,, toast with flue gas and get final product so steel flue gas duct is not carried out special baking processing.
(3) baker body: adopt to have now and carry out baker with the baker pattern of combustion of natural gas frame, 1# and 19# adorn qualified green compact, 2#--4#, 20#--22# stove are whole stove stopping composition, and 5#--14#, 23#--32# furnace chamber load in mixture for useless ripe and qualified green compact, and later furnace chamber is adorned normal green compact.The north system begins to carry out baker from 2# furnace chamber, southern system from the 20# furnace chamber, and baker adopts 360 hours curves of Room 6 operation.Drying out curve is seen attached list.
The drying out curve table
The baker zero position, I and II system burning rack are located at 2# respectively, the 20# furnace chamber.I and II system tobacco pipe place 4# respectively, on quirk the 4th hole of 22# furnace chamber, all are with three furnace chambers to start baker.After lighting Sweet natural gas, note temperature regulation, it is too fast to prevent to heat up, and the control furnace temperature can be regulated the sight burner and is blended into freezing air, and 2#, 20# furnace chamber measuring point temperature are undertaken by drying out curve, when 2# and 20# furnace chamber temperature reach 570 ℃, can increase a burning rack at 3# and 21#,, increase a burning rack again at 4# and 22# again when 2# and 20# furnace chamber temperature reach after 840 ℃, increase every 60 hours every systems later on and be with a furnace chamber, increase to till 6 furnace chambers.Staggered 30 hours when moving the stove time to each system after the gas igniting.Drive manner is as follows: adopt dual system running baker, each system comprises: 3 groups of burning racks, 1 zero-pressure frame, 1 smoke evacuation frame, 1 thermometric rack of measuring pressure, 1 gas blower and 1 cooling frame.
Specific requirement:
1, the baker process is to the requirement of used stopping composition metallurgical coke
Metallurgical coke plays uniformly transfer heat in the stoving oven process, prevent effect such as product deformation, should strict control so advance factory's metallurgical coke, meet the requirement of GB/T1996-1994 " metallurgical coke ".
| Project | Ash, % is not more than | Sulfur, % is not more than | Volatile matter, % is not more than | Jiao is content not, and % is not more than | Granularity |
| Index | 15.0 | 1.0 | 1.9 | 5.0 | 25～40mm |
A, moisture content require:
As containing a large amount of moisture content in the stopping composition, then about 700 ℃, begin water-gas reaction and absorb a large amount of heat, reaction formula: C+H
2O=CO+H
2Δ H=+31.14 kilocalorie/mol.
Usually require that water content is not more than 3% in the stopping composition, our factory 36 Room stoving oven bakers need about 2500 tons of stopping composition, and are excessive as water content, whenever surpass 1%: will need heat 2500*1%*10 more
6/ 18*31.14*4.2=1.82*10
8The heat of KJ.Provide because heat all is a Sweet natural gas, then can consume Sweet natural gas 4861Nm more
3And because of the reaction of carbon causes the product surface oxidation.
B, granularity requirements:
For the smooth discharge that guarantees fugitive constituent with produce maximum and analyse burnt amount, require the stopping composition granularity be 1～6mm content 70～80%, less than 1mm 20～30%.
2, the baker initial stage, at off-duty in 1 cycle (360 hours), because of the preheated air at no initial stage enters, the fire path temperature that starts furnace chamber (2# and 20# furnace chamber) the relatively difficulty that heats up must be carried out the sealing and the negative pressure adjustment work of 1# and 19# furnace chamber.
That 3, will observe flame between drying-out period timely walks always rationally to control negative pressure, and concrete negative pressure value will in time be adjusted according to furnace binding and sealing situation, is principle not return fire.
Claims (1)
1. the furnace drying method of a ring-form calcining furnace is characterized in that in its roasting process,
(1) 360 hours drying out curve of Cai Yonging are:
First section heating gradient is 2.5 ℃/h, and temperature is 65～210 ℃;
Second section heating gradient is 2.5 ℃/h, and temperature is 210～360 ℃;
The 3rd section heating gradient is 3.5 ℃/h, and temperature is 360～570 ℃;
The 4th section heating gradient is 4.5 ℃/h, and temperature is 570～840 ℃;
The 5th section heating gradient is 5.5 ℃/h, and temperature is 840～1150 ℃;
The 6th section is holding-zone, is incubated 64 hours;
(2) in the on-load baker, behind the 5th furnace chamber, load in mixture with ripe scrap anode and qualified green compact; The ratio of loading in mixture is ripe scrap anode: green compact=1: 2;
(3) the igniting baker begins at 2# and 20# furnace chamber;
(4) baker is not in earlier stage with the stepped rising of the fire path temperature of green compact stove;
(5) normal baker closes to an end, and when the startup furnace chamber becomes the 4P furnace chamber, carries out the transition to normalized curve by drying out curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101796494A CN101255564B (en) | 2007-12-17 | 2007-12-17 | Drying method for ring-form calcining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101796494A CN101255564B (en) | 2007-12-17 | 2007-12-17 | Drying method for ring-form calcining furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101255564A true CN101255564A (en) | 2008-09-03 |
| CN101255564B CN101255564B (en) | 2010-06-02 |
Family
ID=39890652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101796494A Active CN101255564B (en) | 2007-12-17 | 2007-12-17 | Drying method for ring-form calcining furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101255564B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880896A (en) * | 2010-06-10 | 2010-11-10 | 索通发展有限公司 | Method for drying carbon anode roasting furnace |
| CN103134314A (en) * | 2013-01-30 | 2013-06-05 | 北京华索科技股份有限公司 | Energy-saving carbon anode calcination system and method thereof |
| CN103642529A (en) * | 2013-12-11 | 2014-03-19 | 中国化学工程第四建设有限公司 | Coal gasifier local baking method |
| CN103667679A (en) * | 2013-12-06 | 2014-03-26 | 马钢(集团)控股有限公司 | Roasting method for metallurgical pellets |
| CN109282640A (en) * | 2018-09-29 | 2019-01-29 | 攀钢集团钒钛资源股份有限公司 | Turn round kilning kiln method |
| CN109813115A (en) * | 2018-12-29 | 2019-05-28 | 湖南金炉科技股份有限公司 | A key furnace drying method and system for continous way kiln |
| CN110885988A (en) * | 2019-12-16 | 2020-03-17 | 云南云铝海鑫铝业有限公司 | Natural gas roasting grooving method |
| CN111661832A (en) * | 2020-06-17 | 2020-09-15 | 四川启明星铝业有限责任公司 | Carbonization treatment method of lithium ion battery carbon negative electrode material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546981B (en) * | 2016-02-19 | 2017-10-24 | 杨维平 | The production roasting system and its process control method of a kind of carbon anode used for aluminium electrolysis |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| OA02156A (en) * | 1965-10-21 | 1970-05-05 | Montecatini Edison S A | Furnace and process for the production, in a molten bath, of metals from their oxides, and electrolysis furnace with multiple cells, composed of bipolar horizontal carbon electrodes. |
| US20050254545A1 (en) * | 2004-05-12 | 2005-11-17 | Sgl Carbon Ag | Graphite electrode for electrothermic reduction furnaces, electrode column, and method of producing graphite electrodes |
| CN2816053Y (en) * | 2005-04-26 | 2006-09-13 | 云南铝业股份有限公司 | Vertical furnace loading and calcinating optimizing anode carbon block |
-
2007
- 2007-12-17 CN CN2007101796494A patent/CN101255564B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880896A (en) * | 2010-06-10 | 2010-11-10 | 索通发展有限公司 | Method for drying carbon anode roasting furnace |
| CN101880896B (en) * | 2010-06-10 | 2012-08-29 | 索通发展股份有限公司 | Method for drying carbon anode roasting furnace |
| CN103134314A (en) * | 2013-01-30 | 2013-06-05 | 北京华索科技股份有限公司 | Energy-saving carbon anode calcination system and method thereof |
| CN103667679A (en) * | 2013-12-06 | 2014-03-26 | 马钢(集团)控股有限公司 | Roasting method for metallurgical pellets |
| CN103667679B (en) * | 2013-12-06 | 2015-09-09 | 马钢(集团)控股有限公司 | A kind of roasting method of metallurgical briquetting |
| CN103642529A (en) * | 2013-12-11 | 2014-03-19 | 中国化学工程第四建设有限公司 | Coal gasifier local baking method |
| CN109282640A (en) * | 2018-09-29 | 2019-01-29 | 攀钢集团钒钛资源股份有限公司 | Turn round kilning kiln method |
| CN109813115A (en) * | 2018-12-29 | 2019-05-28 | 湖南金炉科技股份有限公司 | A key furnace drying method and system for continous way kiln |
| CN110885988A (en) * | 2019-12-16 | 2020-03-17 | 云南云铝海鑫铝业有限公司 | Natural gas roasting grooving method |
| CN111661832A (en) * | 2020-06-17 | 2020-09-15 | 四川启明星铝业有限责任公司 | Carbonization treatment method of lithium ion battery carbon negative electrode material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101255564B (en) | 2010-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101255564B (en) | Drying method for ring-form calcining furnace | |
| CN1084782C (en) | Integrative cokery and its coking process | |
| CN87212113U (en) | Coking still | |
| CN101353579B (en) | 7.63m coke oven negative pressure in-furnace furnace drying method | |
| CN210463572U (en) | Semi-gasification biomass combustion hot blast stove | |
| CN204752780U (en) | Melting reduction iron -smelting device | |
| CN2635677Y (en) | Air and gas double-preheating hot-blast stove | |
| KR101839097B1 (en) | Assembly of firewood kiln | |
| CN105948048B (en) | Energy saving and environment friendly carbon disulfide gasification reacting furnace | |
| CN201277808Y (en) | Ceramic shuttle kiln using clean coal | |
| CN108793781A (en) | A kind of energy-saving and environment-friendly twin furnace lime burner furnace | |
| CN108716852A (en) | A kind of kiln firing oxidation panel secondary combustion system | |
| CN202254784U (en) | Vehicle type fast-reaction furnace smoke discharging system | |
| CN208505004U (en) | A kind of kiln firing oxidation panel secondary combustion system | |
| CN103206857A (en) | Method for operating environment-friendly energy-saving de-waxing kiln | |
| CN2847048Y (en) | Chain type coal burning high temperature hot wind environment protection furnace | |
| CN2224331Y (en) | Coal-saving quick-combustion device for combustionc hamber of ceramic kiln | |
| CN115418433B (en) | High-temperature furnace drying method for opening new converter | |
| CN218954889U (en) | Primary incineration three-stage waste heat utilization device for industrial kiln | |
| CN100515998C (en) | Coal and gas burning mixed ceramic sintering process and push bat kiln | |
| CN2704010Y (en) | Roller-bed kiln using water-coal as fuel | |
| CN206269585U (en) | A kind of high temperature oxygen deprivation multicell heat accumulation casting furnace | |
| CN118242885A (en) | Down flame type firewood firing dragon kiln for firing pottery | |
| CN209636159U (en) | A kind of heat recovery coke oven lower part quirk bottom cooling and insulating structure | |
| CN112611233B (en) | Device and method for sintering and coke discharging of lithium battery cathode material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |