CN103882471A - Anode material for fluorine production and preparation method of anode material - Google Patents
Anode material for fluorine production and preparation method of anode material Download PDFInfo
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- CN103882471A CN103882471A CN201410111707.XA CN201410111707A CN103882471A CN 103882471 A CN103882471 A CN 103882471A CN 201410111707 A CN201410111707 A CN 201410111707A CN 103882471 A CN103882471 A CN 103882471A
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- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 18
- 239000011737 fluorine Substances 0.000 title claims abstract description 18
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000010405 anode material Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 239000006253 pitch coke Substances 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 238000004898 kneading Methods 0.000 claims abstract description 8
- 239000002562 thickening agent Substances 0.000 claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 7
- 238000004939 coking Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000002006 petroleum coke Substances 0.000 claims abstract description 3
- 239000000571 coke Substances 0.000 claims description 36
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000013467 fragmentation Methods 0.000 claims description 10
- 238000006062 fragmentation reaction Methods 0.000 claims description 10
- 239000011295 pitch Substances 0.000 claims description 9
- 239000000047 product Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 239000011339 hard pitch Substances 0.000 claims description 7
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 239000010426 asphalt Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000003837 high-temperature calcination Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000011329 calcined coke Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000004886 process control Methods 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract 2
- 238000003682 fluorination reaction Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002010 green coke Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Abstract
The invention relates to an anode material for fluorine production and a preparation method of the anode material, and belongs to the technical field of materials. The anode material is processed and prepared by calcining green petroleum coke and green pitch coke at high temperature, implementing crushing through a crusher, sieve fraction and milling through a Raymond mill, kneading under the action of pitch which serves as a binding agent on a certain proportion to obtain a thickener which is excellent in plasticity, and carrying out extrusion-forming, and impregnating and baking through a high-coking impregnant. According to the preparation method, a conventional carbon process is completely adopted, many details can be optimized, and the purposes of low production cost, short cycle and rapid speed of becoming effective are achieved; the process control is refined and a shortcoming of quick fluorination and corrosion due to an ash content affect is relieved; on the basis of making full use of a high-strength property of the pitch coke, the mechanical strength of a finished product is enhanced, high-temperature sintering is carried out, a relatively high current density can be borne and the fluorine production efficiency is accelerated; by the high-coking binding agent and impregnant, the porosity is reduced and the mechanical strength is increased; the anode material has such characteristics that the maximum grain size is 1mm, and aggregate accounts for 45% and can sink on the bottom of an electrolytic bath after being crushed.
Description
Technical field
The present invention relates to a kind of pure carbon anode material and preparation method thereof for fluorine gas processed, belong to material technology field.
Background technology
Fluorine gas is as indispensable main gases in field such as semi-conductor, nuclear industry, electrical industries, fluorine gas produce at present warm electrolytic process in main employing, and required positive plate material in electrolyzer is key part.Due to simple substance fluoride ripple very alive, can react with many metals and metal oxide, even can react in room temperature or lower than under room temperature condition with most of inorganicss and organism, therefore fluorine technology processed and safe difficulty are large, require high.Fluorine processed has been proposed to following many requirements with electrolyzer positive plate: resistance to fluorine and the resistance to corrosive nature of fluoridizing are good thereupon; Resistivity is low; Electrolytic solution is good to its wetting property; Overvoltage is little; Physical strength is high; Can under high current density, use for a long time; Than great, when local fragmentation, fragment can be sunken to bottom of electrolytic tank, avoids intereelectrode short-circuit; Manufacturing cycle is short, cheap etc.
In recent years many technical study personnel aspect anode modification, paid many, such as, by carbon anode surface being utilized to chemical Vapor deposition process deposition RESEARCH OF PYROCARBON, strengthen anti-fluorine and the resistance to corrosive nature of fluoridizing, prevent polarization; Conductive doped carbon black, increases conductivity; Adulterate or permeate some metals and obtain high intensity and low-resistivity; Utilize carbon fiber/carbon composite that carbon fiber guiding is electrical and high strength is made or do a lot of work in the repacking of electrolyzer.More or less obtained certain effect, but in manufacturing cost, paid more, realized value engineering also will be following carbon anode a kind of direction of producing.
Summary of the invention
The object of the present invention is to provide a kind of fluorine processed anode material and preparation method thereof.By oil green coke and the high-temperature calcination of pitch green coke, through crusher in crushing, sieve fraction, Raymond mill powder process, under certain proportion caking agent asphalt grouting, kneading becomes the good thickener of plasticity, and extrusion molding is used high coking soaker one to soak two roastings, and processing makes.
Technical scheme of the present invention is: a kind of fluorine anode material processed, it is characterized in that: starting material are 1-0.5mm refinery coke, 0.5-0mm pitch coke, 200 order refinery cokes, high-temperature rigid pitch caking agent, weight ratio is 1-0.5mm refinery coke: 0.5-0mm pitch coke: 200 order refinery cokes: high-temperature rigid pitch caking agent=(20 ± 5): (25 ± 5): (55 ± 5): (35 ± 3), adopt single-steeping double roasting to make.
Further, weight ratio is 1-0.5mm refinery coke: 0.5-0mm pitch coke: 200 order refinery cokes: high-temperature rigid pitch caking agent=20: 25: 55: 35.
Further, 1-0.5mm refinery coke purity is not less than 80%; 0.5-0mm pitch coke purity is not less than 80%; 200 order refinery coke purity are 75 ± 3%.
A preparation method for anode material for fluorine processed, comprises the steps:
1) raw-material selection, by weight, selects 25 parts of pitch cokes, and 35 parts of 75 parts of refinery cokes, hard pitch are as main raw material(s);
2) calcining, by pitch coke and refinery coke high-temperature calcination between 1300-1350 DEG C respectively, fully overflows fugitive constituent, and makes it the impurity element volatilization of some low volatilization points, increases and shrinks, and refinery coke true density is not less than 2.10g/cm
3, ash control is not more than 0.4%; Pitch coke true density is not less than 1.96g/cm
3, ash control is not more than 0.5%; Use high-temperature rigid pitch as caking agent, ash control is not more than 0.2%, and coking value is not less than 55%; On calcining transferring raw material travelling belt, magnetic recording wire separator is installed;
3) fragmentation, screening and abrasive dust, by calcined coke fragmentation, install magnetic recording wire separator on travelling belt; After fragmentation, enter sifted and divide, output 1-0.5mm grade refinery coke, 0.5-0mm grade pitch coke; Refinery coke is made to 200 order purity 70 ± 3% coke powders;
4) kneading, according to weight ratio, 20 parts of 1-0.5mm refinery cokes, 25 parts of 0.5-0mm pitch cokes, 200 55 parts of order refinery cokes, add more than kneading pot is dry mixed 60min, make it to stir, temperature to 120 ± 5 DEG C, add and melt 35 parts of the hard pitch that remove of dehydration deironing, more than wet mixing 60min, temperature arrives 150 ± 5 DEG C, obtains the good thickener of plasticity;
5) moulding, adopts extrusion molding mode, controls 115 ± 5 DEG C of material chambers temps, and 125 ± 5 DEG C of mouth type temperature, evenly, are at the uniform velocity cooled to thickener between 110-115 DEG C and add pan feeding chamber, at the uniform velocity squeeze out raw product, water cooling.
6) roasting, goods evenly, vertically pack stoving oven into, adopt the roasting of 260-320h curve, top temperature 1300-1350 DEG C of insulation 40-48h;
7) single-steeping, cleans out the stopping composition of a roasting product adhesion, and preheating 160-180 DEG C, is greater than 0.075MPa in vacuum tightness, invades quinoline content and is less than 1%, the special asphalt soaker that carbon yield is greater than 55% under pressure 0.9-1.2MPa;
8) re-baking, adopts 220-260h curve, top temperature 950-1000 DEG C of insulation 40-48h.
Further, in step 3,1-0.5mm refinery coke purity is not less than 80%; 0.5-0mm pitch coke purity is not less than 80%; 200 order pitch coke purity are 75 ± 3%.
The invention has the beneficial effects as follows, adopt traditional charcoal element technique completely, optimized in many details, realized that production cost is low, the cycle is short, instant effect; Thinning process control, slows down because ash content affects and causes fluoridizing the shortcoming that corrosion is fast; Make full use of pitch coke high-intensity performance and strengthened products machinery intensity, high temperature sintering, can bear larger current density, accelerates fluorine efficiency processed; Use high coking caking agent and soaker, by low porosity, increase physical strength; Formula adopts largest particle 1mm, and aggregate accounts for 45%, can be sunken to the features such as electrolyzer is low after cracked.
Brief description of the drawings
Fig. 1 is process flow sheet of the present invention
Under concrete fabricating technology is:
1, raw-material selection, selects 25 parts of pitch cokes, and 35 parts of 75 parts of refinery cokes, hard pitch are as main raw material(s).
2, calcining, selects high-quality asphalt green coke and the high-temperature calcination between 1300-1350 DEG C of oil green coke, fully overflows fugitive constituent, and makes it the impurity element volatilization of some low volatilization points, increases and shrinks, and refinery coke true density is not less than 2.10g/cm
3, ash control is not more than 0.4%.Pitch coke true density is not less than 1.96g/cm
3, ash control is not more than 0.5%.Use hard pitch as caking agent, have stronger bonding force and high carbon yield, can strengthen products machinery intensity, ash control is not more than 0.2%, and coking value is not less than 55%.At calcining travelling belt, magnetic recording wire separator is installed, raw material storage is used storage tank, prevents that dust from falling into.
3, fragmentation, screening and abrasive dust, utilize jaw crusher by calcined coke fragmentation, travelling belt is installed magnetic recording wire separator, after fragmentation, promote and enter sieve apparatus screening with chapelet, output 1-0.5mm grade refinery coke, 0.5-0mm grade pitch coke, Raymond mill powder process 200 order purity 70 ± 3% petroleum coke powders.
4, kneading, according to formula: 20 parts of 1-0.5mm refinery cokes, 25 parts of 0.5-0mm pitch cokes, 200 55 parts of order refinery cokes, add kneading pot to be dry mixed 60min and make it above to stir, temperature to 120 ± 5 DEG C, add and melt 35 parts of the hard pitch that remove of dehydration deironing, more than wet mixing 60min, temperature arrives 150 ± 5 DEG C, obtains the good thickener of plasticity.
5, moulding, adopts extrusion molding mode, controls 115 ± 5 DEG C of material chambers temps, and 125 ± 5 DEG C of mouth type temperature, evenly, are at the uniform velocity cooled to thickener between 110-115 DEG C and add pan feeding chamber, at the uniform velocity squeeze out raw product, water cooling.
6, roasting, goods evenly, vertically pack chamber circular furnace into, adopt the roasting of 260-320h curve, top temperature 1300-1350 DEG C of insulation 40-48h.
7, single-steeping, cleans out the stopping composition of a roasting product adhesion, and preheating 160-180 DEG C, is greater than 0.075MPa in vacuum tightness, invades quinoline content and is less than 1%, the special asphalt soaker that carbon yield is greater than 55% under pressure 0.9-1.2MPa.
8, re-baking, adopts 220-260h curve, top temperature 950-1000 DEG C of insulation 40-48h.
9, according to figure paper conversion.
Making product relevant have national qualification mechanism to detect physical and chemical index as follows through entrusting:
| Index | Unit | Numerical value |
| Volume density | g/cm3 | 1.73 |
| Resistivity | μΩ.m | 37 |
| Ultimate compression strength | Mpa | 78 |
| Folding strength | Mpa | 30 |
| True density | g/cm3 | 2.03 |
| Ash content | ％ | 0.28 |
| Porosity | ％ | 18 |
| Fixed carbon | ％ | 99.3 |
| Sulphur content | ％ | 0.27 |
| Moisture content | ％ | 0.10 |
Above the pure carbon of one provided by the invention fluorine anode material processed and preparation method thereof is described in detail; having applied specific case herein sets forth principle and the embodiment of invention; the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (5)
1. a fluorine anode material processed, it is characterized in that: starting material are 1-0.5mm refinery coke, 0.5-0mm pitch coke, 200 order refinery cokes, high-temperature rigid pitch caking agent, weight ratio is 1-0.5mm refinery coke: 0.5-0mm pitch coke: 200 order refinery cokes: high-temperature rigid pitch caking agent=(20 ± 5): (25 ± 5): (55 ± 5): (35 ± 3), adopt single-steeping double roasting to make.
2. anode material according to claim 1, is characterized in that: weight ratio is 1-0.5mm refinery coke: 0.5-0mm pitch coke: 200 order refinery cokes: high-temperature rigid pitch caking agent=20: 25: 55: 35.
3. anode material according to claim 1, is characterized in that: 1-0.5mm refinery coke purity is not less than 80%; 0.5-0mm pitch coke purity is not less than 80%; 200 order pitch coke purity are 75 ± 3%.
4. a preparation method for anode material for fluorine processed, comprises the steps:
1) raw-material selection, by weight, selects 25 parts of pitch cokes, and 35 parts of 75 parts of refinery cokes, hard pitch are as main raw material(s);
2) calcining, by pitch coke and refinery coke high-temperature calcination between 1300-1350 DEG C respectively, fully overflows fugitive constituent, and makes it the impurity element volatilization of some low volatilization points, increases and shrinks, and refinery coke true density is not less than 2.10g/cm
3, ash control is not more than 0.4%; Pitch coke true density is not less than 1.96g/cm
3, ash control is not more than 0.5%; Use high-temperature rigid pitch as caking agent, ash control is not more than 0.2%, and coking value is not less than 55%; At calcining raw materials travelling belt, magnetic recording wire separator is installed;
3) fragmentation, screening and abrasive dust, by calcined coke fragmentation, travelling belt is installed magnetic recording wire separator; After fragmentation, enter sifted and divide, output 1-0.5mm grade refinery coke, 0.5-0mm grade pitch coke; Produce 200 order purity 70 ± 3% petroleum coke powders;
4) kneading, according to weight ratio, 20 parts of 1-0.5mm refinery cokes, 25 parts of 0.5-0mm pitch cokes, 200 55 parts of order refinery cokes, add more than kneading pot is dry mixed 60min, make it to stir, temperature to 120 ± 5 DEG C, add and melt 35 parts of the hard pitch that remove of dehydration deironing, more than wet mixing 60min, temperature arrives 150 ± 5 DEG C, obtains the good thickener of plasticity;
5) moulding, adopts extrusion molding mode, controls 115 ± 5 DEG C of material chambers temps, and 125 ± 5 DEG C of mouth type temperature, evenly, are at the uniform velocity cooled to thickener between 110-115 DEG C and add pan feeding chamber, at the uniform velocity squeeze out raw product, water cooling.
6) roasting, goods evenly, vertically pack stoving oven into, adopt the roasting of 260-320h curve, top temperature 1300-1350 DEG C of insulation 40-48h;
7) single-steeping, cleans out the stopping composition of a roasting product adhesion, and preheating 160-180 DEG C, is greater than 0.075MPa in vacuum tightness, invades quinoline content and is less than 1%, the special asphalt soaker that carbon yield is greater than 55% under pressure 0.9-1.2MPa;
8) re-baking, adopts 220-260h curve, top temperature 950-1000 DEG C of insulation 40-48h.
5. preparation method according to claim 4, is characterized in that: in step 3,1-0.5mm refinery coke purity is not less than 80%; 0.5-0mm pitch coke purity is not less than 80%; 200 order pitch coke purity are 75 ± 3%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510929A (en) * | 2019-08-28 | 2019-11-29 | 宁夏天宝炭素有限公司 | Strength and thermal shock resistant performance electrode paste and preparation method |
| CN111020628A (en) * | 2019-12-26 | 2020-04-17 | 四川大学 | Fluorocarbon anode, preparation method and application thereof |
| CN111172560A (en) * | 2020-01-21 | 2020-05-19 | 吉林工业职业技术学院 | Manufacturing process of carbon plate for anode of fluorine-making electrolytic cell |
| CN112458490A (en) * | 2020-11-24 | 2021-03-09 | 吉林科工碳业有限公司 | Fluorine-making anode and preparation method thereof |
| CN112831804A (en) * | 2020-12-30 | 2021-05-25 | 江苏苏菱铝用阳极有限公司 | Production method for prebaked anode by using asphalt coke |
| CN116903373A (en) * | 2023-07-28 | 2023-10-20 | 鄯善隆盛碳素制造有限公司 | Graphitized furnace end guard plate processing technology |
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| JPS5980786A (en) * | 1982-10-29 | 1984-05-10 | Mitsubishi Keikinzoku Kogyo Kk | Manufacture of anode for aluminum electrolytic cell |
| CN101357761A (en) * | 2008-09-09 | 2009-02-04 | 河南天利碳素材料有限公司 | High pure graphitic profile and preparation technique thereof |
| CN101913593A (en) * | 2010-08-26 | 2010-12-15 | 大同市新成特炭有限公司 | Graphite material for producing nanogate carbon and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5980786A (en) * | 1982-10-29 | 1984-05-10 | Mitsubishi Keikinzoku Kogyo Kk | Manufacture of anode for aluminum electrolytic cell |
| CN101357761A (en) * | 2008-09-09 | 2009-02-04 | 河南天利碳素材料有限公司 | High pure graphitic profile and preparation technique thereof |
| CN101913593A (en) * | 2010-08-26 | 2010-12-15 | 大同市新成特炭有限公司 | Graphite material for producing nanogate carbon and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510929A (en) * | 2019-08-28 | 2019-11-29 | 宁夏天宝炭素有限公司 | Strength and thermal shock resistant performance electrode paste and preparation method |
| CN111020628A (en) * | 2019-12-26 | 2020-04-17 | 四川大学 | Fluorocarbon anode, preparation method and application thereof |
| CN111020628B (en) * | 2019-12-26 | 2021-04-13 | 四川大学 | Fluorocarbon anode, preparation method and application thereof |
| CN111172560A (en) * | 2020-01-21 | 2020-05-19 | 吉林工业职业技术学院 | Manufacturing process of carbon plate for anode of fluorine-making electrolytic cell |
| CN112458490A (en) * | 2020-11-24 | 2021-03-09 | 吉林科工碳业有限公司 | Fluorine-making anode and preparation method thereof |
| CN112831804A (en) * | 2020-12-30 | 2021-05-25 | 江苏苏菱铝用阳极有限公司 | Production method for prebaked anode by using asphalt coke |
| CN116903373A (en) * | 2023-07-28 | 2023-10-20 | 鄯善隆盛碳素制造有限公司 | Graphitized furnace end guard plate processing technology |
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| CN103882471B (en) | 2016-10-05 |
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Address after: Jin Yong road 300180 Tianjin City Hedong District No. 174 building 201 Applicant after: TIANJIN KIMWAN CARBON TECHNOLOGY AND DEVELOPMENT CO.,LTD. Address before: Nine weft road 300171 Tianjin City Hedong District No. 103 building 11 layer Manhattan Applicant before: TIANJIN KIMWAN CARBON TECHNOLOGY AND DEVELOPMENT CO.,LTD. |
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Address after: 300180 R & D building, No. 174 Jintang Road, Hedong District, Tianjin, 201 Applicant after: TIANJIN KIMWAN CARBON TECHNOLOGY AND DEVELOPMENT CO.,LTD. Address before: Jin Yong road 300180 Tianjin City Hedong District No. 174 building 201 Applicant before: TIANJIN KIMWAN CARBON TECHNOLOGY AND DEVELOPMENT CO.,LTD. |
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Effective date of registration: 20180508 Address after: 301505 west side of Fukang Road, Lutai Economic Development Zone, Tangshan City, Hebei Patentee after: TANGSHAN KIMWAN SPECIAL CARBON&GRAPHITE Co.,Ltd. Address before: 300180 R & D building 174, Jintang Road, Hedong District, Tianjin 201 Patentee before: TIANJIN KIMWAN CARBON TECHNOLOGY AND DEVELOPMENT CO.,LTD. |
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Denomination of invention: An anode material for fluorine gas production and its preparation method Granted publication date: 20161005 Pledgee: Tangshan Branch of China Postal Savings Bank Co.,Ltd. Pledgor: TANGSHAN KIMWAN SPECIAL CARBON&GRAPHITE Co.,Ltd. Registration number: Y2024980008260 |