CN102583355A - Very-large-specification and high-power graphite conductive electrode and preparation method of graphite conductive electrode - Google Patents
Very-large-specification and high-power graphite conductive electrode and preparation method of graphite conductive electrode Download PDFInfo
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- CN102583355A CN102583355A CN2012100641764A CN201210064176A CN102583355A CN 102583355 A CN102583355 A CN 102583355A CN 2012100641764 A CN2012100641764 A CN 2012100641764A CN 201210064176 A CN201210064176 A CN 201210064176A CN 102583355 A CN102583355 A CN 102583355A
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Abstract
The invention discloses a very-large-specification and high-power graphite conductive electrode manufactured by taking petroleum coke as raw material, and a preparation method of the graphite conductive electrode. The graphite conductive electrode comprises the following components according to weight percent: 6% to 8% of calcined graphitization petroleum coke with granules of 19 mm to 11.2 mm, 8% to 12% of calcined graphitization petroleum coke with granules of 11.2 mm to 6.7 mm, 10% to 13% of calcined graphitization petroleum coke with granules of 6.7 mm to 3.4 mm, 8% to 12% of calcined graphitization petroleum coke with granules of 3.4 mm to 1.7 mm, 10% to 15% of calcined graphitization petroleum coke with granules of 1.7 mm to 0.42 mm, 32% to 37% of 200-mesh powder, and 20% to 24% of high-temperature modified asphalt. The graphite conductive electrode is manufactured according to a conventional process, the mixture temperature is 165 to 185 DEG C, and the airing temperature is 130 to 150 DEG C; the calcination temperature forms a slowness curve, wherein the maximum temperature is 1200 DEG C, and the drawing temperature is controlled to be below 200 DEG C; and the slowness curve is adopted to control the rising speed of boiler temperature during graphitization, and the maximum temperature reaches 3300 DEG C. The very-large-specification and high-power graphite conductive electrode has the advantages of large diameter, large length, high strength, good thermal shock resistance, high electrical conductivity, long service life, low use cost and zero splicing.
Description
Technical field
The present invention relates to a kind of conductive electrode, specifically relating to a kind of is the super large-scale superpower graphite electrode that raw material is made with the refinery coke, also relates to the preparation method of this electrode.
Background technology
Electrode is a kind of cylindrical object, is the vitals of electric furnaces such as industry steel-making, silicon, through electrode electric energy is changed into heat energy and carries out pyrotic smelting.Therefore, electrode will have high orientation, high crystalline, high volume density and good heat-shock resistance, oxidation-resistance, high mechanical strength.
At present; The superpower graphite electrode diameter that the domestic industry stove is used is 800mm to the maximum; Length is no longer than 2400mm; When be used in the sectional area requirement greater than the industrial furnace of the super large-scale graphite electrode of 0.5 ㎡ on the time, just need be spliced by the many little superpower graphite electrodes of diameter.The pole strength of this splicing is low, thermal shock resistance is poor, electric conductivity is low, work-ing life is short, has only work-ing life about 3 years, causes enterprise's use cost high.
Summary of the invention
Task of the present invention provides that a kind of diameter is big, and length is long, and intensity is high, good thermal shock stability, and electric conductivity is high, long service life, use cost is low, the large-size graphite electrode that need not splice.The preparation method of this electrode also is provided.
For realizing above-mentioned task; Technical solution of the present invention does; A kind of large-size graphite electrode is made up of the component of following weight per-cent: forge back greying refinery coke 19 mm-11.2 mm particulate material 6%-8%, forge back greying refinery coke 11.2 mm-6.7mm particulate material 8%-12%; Forge back greying refinery coke 6.7 mm-3.4mm particulate material 10%-13%; Forge back greying refinery coke 3.4 mm-1.7mm particulate material 8%-12%; Forge back greying refinery coke 1.7 mm-0.42mm particulate material 10%-15%; Forge back greying refinery coke powder 200 orders 32%-37%; High temperature modified pitch 20%-24%.
The preparation method of said super large-scale superpower graphite electrode, comprise raw material crushing, screening, batching, mix pinch, die mould, roasting, greying, mechanical workout, finished product, its kneading temperature is 165-185 degree, the material temperature of drying in the air is 130-150 degree; Maturing temperature adopts curve at a slow speed, and top temperature is 1200 degree, and tapping temperature is controlled at below 200 degree; Greying adopts at a slow speed curve to control the furnace temperature lift velocity, and top temperature reaches 3300 degree.
The present invention has that diameter is big, and length is long, and intensity is high, good thermal shock stability, and electric conductivity is high, long service life, use cost is low, the advantage that need not splice.
The present invention and common specification electrode performance index are relatively
Embodiment
Embodiment 1, and super large-scale superpower graphite electrode is made up of the component of following weight per-cent, forges back greying refinery coke 19 mm-11.2 mm particulate material 6%; Forge back greying refinery coke 11.2 mm-6.7mm particulate material 8%; Forge back greying refinery coke 6.7 mm-3.4mm particulate material 10%; Forge back greying refinery coke 3.4 mm-1.7mm particulate material 8%; Forge back greying refinery coke 1.7 mm-0.42mm particulate material 10%; Forge back greying refinery coke powder 200 orders 34%, high temperature modified pitch 24%.According to the above ratio after the batching, by broken, screening, batching, mix pinch, the technology manufacturing of die mould, roasting, greying, mechanical workout, finished product, its kneading temperature is 165 degree, the material temperature of drying in the air is 130 degree; Maturing temperature adopts curve at a slow speed, and top temperature is 1200 degree, and tapping temperature is controlled at 180 degree; Greying adopts at a slow speed curve to control the furnace temperature lift velocity, and top temperature reaches 3300 degree.
Embodiment 2, and super large-scale superpower graphite electrode is made up of the component of following weight per-cent, forge back greying refinery coke 19 mm-11.2 mm particulate material 8%; Forge back greying refinery coke 11.2 mm-6.7mm particulate material 8%; Forge back greying refinery coke 6.7 mm-3.4mm particulate material 12%; Forge back greying refinery coke 3.4 mm-1.7mm particulate material 8%; Forge back greying refinery coke 1.7 mm-0.42mm particulate material 12%; Forge back greying refinery coke powder 200 orders 32%; High temperature modified pitch 20%.According to the above ratio after the batching, by broken, screening, batching, mix pinch, the technology manufacturing of die mould, roasting, greying, mechanical workout, finished product, its kneading temperature is 185 degree, the material temperature of drying in the air is 140 degree; Maturing temperature adopts curve at a slow speed, and top temperature is 1200 degree, and tapping temperature is controlled at 190 degree; Greying adopts at a slow speed curve to control the furnace temperature lift velocity, and top temperature reaches 3300 degree.
Embodiment 3, and super large-scale superpower graphite electrode is made up of the component of following weight per-cent, forge back greying refinery coke 19 mm-11.2 mm particulate material 6%; Forge back greying refinery coke 11.2 mm-6.7mm particulate material 8%; Forge back greying refinery coke 6.7 mm-3.4mm particulate material 10%; Forge back greying refinery coke 3.4 mm-1.7mm particulate material 9%; Forge back greying refinery coke 1.7 mm-0.42mm particulate material 11%; Forge back greying refinery coke powder 200 orders 35%, high temperature modified pitch 21%.According to the above ratio after the batching, by broken, screening, batching, mix pinch, the technology manufacturing of die mould, roasting, greying, mechanical workout, finished product, its kneading temperature is 170 degree, the material temperature of drying in the air is 145 degree; Maturing temperature adopts curve at a slow speed, and top temperature is 1200 degree, and tapping temperature is controlled at 180 degree; Greying adopts at a slow speed curve to control the furnace temperature lift velocity, and top temperature reaches 3300 degree.
Embodiment 4, and super large-scale superpower graphite electrode is made up of the component of following weight per-cent, forge back greying refinery coke 19 mm-11.2 mm particulate material 6%; Forge back greying refinery coke 11.2 mm-6.7mm particulate material 9%; Forge back greying refinery coke 6.7 mm-3.4mm particulate material 10%; Forge back greying refinery coke 3.4 mm-1.7mm particulate material 9%; Forge back greying refinery coke 1.7 mm-0.42mm particulate material 13%; Forge back greying refinery coke powder 200 orders 33%, high temperature modified pitch 20%.According to the above ratio after the batching, by broken, screening, batching, mix pinch, the technology manufacturing of die mould, roasting, greying, mechanical workout, finished product, its kneading temperature is 175 degree, the material temperature of drying in the air is 150 degree; Maturing temperature adopts curve at a slow speed, and top temperature is 1200 degree, and tapping temperature is controlled at 190 degree; Greying adopts at a slow speed curve to control the furnace temperature lift velocity, and top temperature reaches 3300 degree.
Claims (2)
1. a super large-scale superpower graphite electrode is made up of the component of following weight per-cent: forge back greying refinery coke 19 mm-11.2 mm particulate material 6%-8%, forge back greying refinery coke 11.2 mm-6.7mm particulate material 8%-12%; Forge back greying refinery coke 6.7 mm-3.4mm particulate material 10%-13%; Forge back greying refinery coke 3.4 mm-1.7mm particulate material 8%-12%; Forge back greying refinery coke 1.7 mm-0.42mm particulate material 10%-15%; Forge back greying refinery coke powder 200 orders 32%-37%; High temperature modified pitch 20%-24%.
2. the preparation method of the said super large-scale superpower of claim 1 a graphite electrode; Comprise raw material crushing, screening, batching, mix pinch, die mould, roasting, greying, mechanical workout, finished product; It is characterized in that: kneading temperature is 165-185 degree, and the material temperature of drying in the air is 130-150 degree; Maturing temperature adopts curve at a slow speed, and top temperature is 1200 degree, and tapping temperature is controlled at below 200 degree; Greying adopts at a slow speed curve to control the furnace temperature lift velocity, and top temperature reaches 3300 degree.
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| CN2012100641764A CN102583355A (en) | 2012-03-13 | 2012-03-13 | Very-large-specification and high-power graphite conductive electrode and preparation method of graphite conductive electrode |
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| CN2012100641764A CN102583355A (en) | 2012-03-13 | 2012-03-13 | Very-large-specification and high-power graphite conductive electrode and preparation method of graphite conductive electrode |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555315A (en) * | 2013-05-27 | 2014-02-05 | 新疆准东石油技术股份有限公司 | Carbon base supporting agent and preparation method thereof |
| CN104401975A (en) * | 2014-10-28 | 2015-03-11 | 湖南省长宇新型炭材料有限公司 | Environmental-friendly air gouging carbon electrode and preparation method thereof |
| CN107032791A (en) * | 2017-05-11 | 2017-08-11 | 介休市志尧碳素有限公司 | Big specification high power graphite electrode and its manufacture method |
| CN110615680A (en) * | 2019-09-06 | 2019-12-27 | 昇瑞能源科技有限公司 | Graphite electrode with GHP phi 960-phi 1420mm super-large specification and production method thereof |
| CN111320170A (en) * | 2020-03-05 | 2020-06-23 | 鹏辉能源常州动力锂电有限公司 | Graphite material and preparation method and application thereof |
| CN111517792A (en) * | 2020-04-29 | 2020-08-11 | 焦作市东星炭电极有限公司 | Extra-large-size graphite electrode with diameter of 1320mm and preparation method thereof |
| CN112707732A (en) * | 2021-01-21 | 2021-04-27 | 江苏嘉明碳素新材料有限公司 | Production process of ultra-long regenerated graphite electrode for smelting quartz |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696116A (en) * | 2009-10-27 | 2010-04-21 | 介休市巨源炭素有限公司 | Production method of large-size graphite electrode |
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2012
- 2012-03-13 CN CN2012100641764A patent/CN102583355A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696116A (en) * | 2009-10-27 | 2010-04-21 | 介休市巨源炭素有限公司 | Production method of large-size graphite electrode |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555315A (en) * | 2013-05-27 | 2014-02-05 | 新疆准东石油技术股份有限公司 | Carbon base supporting agent and preparation method thereof |
| CN103555315B (en) * | 2013-05-27 | 2016-01-20 | 新疆准东石油技术股份有限公司 | A kind of charcoal base propping agent and preparation method thereof |
| CN104401975A (en) * | 2014-10-28 | 2015-03-11 | 湖南省长宇新型炭材料有限公司 | Environmental-friendly air gouging carbon electrode and preparation method thereof |
| CN107032791A (en) * | 2017-05-11 | 2017-08-11 | 介休市志尧碳素有限公司 | Big specification high power graphite electrode and its manufacture method |
| CN107032791B (en) * | 2017-05-11 | 2020-06-16 | 介休市志尧碳素有限公司 | Large-size high-power graphite electrode and manufacturing method thereof |
| CN110615680A (en) * | 2019-09-06 | 2019-12-27 | 昇瑞能源科技有限公司 | Graphite electrode with GHP phi 960-phi 1420mm super-large specification and production method thereof |
| CN110615680B (en) * | 2019-09-06 | 2021-01-15 | 河南昇瑞炭材料科技有限公司 | Graphite electrode with GHP phi 960-phi 1420mm super-large specification and production method thereof |
| CN111320170A (en) * | 2020-03-05 | 2020-06-23 | 鹏辉能源常州动力锂电有限公司 | Graphite material and preparation method and application thereof |
| CN111517792A (en) * | 2020-04-29 | 2020-08-11 | 焦作市东星炭电极有限公司 | Extra-large-size graphite electrode with diameter of 1320mm and preparation method thereof |
| CN112707732A (en) * | 2021-01-21 | 2021-04-27 | 江苏嘉明碳素新材料有限公司 | Production process of ultra-long regenerated graphite electrode for smelting quartz |
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Application publication date: 20120718 |