CN101983002B - Special carbon electrode for smelting of titanium slag and preparation method thereof - Google Patents
Special carbon electrode for smelting of titanium slag and preparation method thereof Download PDFInfo
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- CN101983002B CN101983002B CN201010560915XA CN201010560915A CN101983002B CN 101983002 B CN101983002 B CN 101983002B CN 201010560915X A CN201010560915X A CN 201010560915XA CN 201010560915 A CN201010560915 A CN 201010560915A CN 101983002 B CN101983002 B CN 101983002B
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Abstract
The invention belongs to the technical field of carbon electrodes and discloses a special carbon electrode for smelting of titanium slag and a preparation method thereof. The preparation method is mainly technically characterized by screening solid raw materials comprising electrically calcined coal, petroleum coke and graphite scrap after calcination, proportioning the materials by an electronic proportioning system, then adding into a mixing and kneading pot, stirring and dry-mixing, then adding coal asphalt, mixing and kneading, and further molding, baking and machining for producing a special carbon electrode finished product for smelting of the titanium slag. The special carbon electrode for the smelting of the titanium slag has the advantages of no asphalt volatile matters, high volume density, low ash content and good oxidation resistance; and the the special carbon electrode is used for replacing a self-baking electrode, thus flue gas volatile matters emitted during baking is avoided, the power consumption during the baking process of the self-baking electrode is saved, energy conservation and environmental friendliness are realized, the installation is simple and convenient, the accidents of soft breakage and hard breakage of the electrode caused by careless operation are avoided, and the safety is greatly improved.
Description
Technical field
The invention belongs to the carbon resistance rod technical field, relate in particular to a kind of titanium slag and smelt special-purpose carbon resistance rod and preparation method thereof.
Background technology
At present titanium slag smelts that to produce what generally adopt be self-baking electrode, adopts the electrode paste heat-agglomerating of in the hot stove use in ore deposit, switching on to form.In recent years, because the appearance of national environmental protection policy, the increasing of environmental protection management intensity has had strict especially requirement to the discharging of flue gas.A large amount of coal tar pitch because of electrode paste contains when sintering electrode into, can produce a large amount of bitumen flue gas, and contaminated environment has a strong impact on the healthy of people.On the other hand; Need certain heat when electrode paste sinters self-baking electrode into, need electric energy to do work and accomplish, so just increased by about 5%～10% power consumption; Deep day by day along with national energy-saving and emission-reduction work in recent years, power consumption is big, the high enterprise of discharging will be eliminated gradually.The energy is big, environmental pollution is serious and electrode paste is because of expending, and also is put into to eliminate the industry catalogue; Moreover because careless manipulation can cause the generation of soft disconnected, the disconnected firmly accident of electrode, the safety of operating personnel's life and national wealth in serious threat.
Summary of the invention
First problem that the present invention will solve with regard to provide a kind of simple installation, titanium slag safe in utilization, energy-conserving and environment-protective is smelted special-purpose carbon resistance rod.
Second problem that the present invention will solve just provides the preparation method that a kind of titanium slag is smelted special-purpose carbon resistance rod.
For solving above-mentioned first problem, the titanium slag that the present invention proposes is smelted special-purpose carbon resistance rod and is comprised following components in part by weight:
Particle diameter is smaller or equal to the graphite of 4mm broken 16---24 weight portions
Particle diameter greater than 4mm smaller or equal to the graphite of 10mm broken 12---20 weight portions
Particle diameter greater than 10mm smaller or equal to the graphite of 16mm broken 8---14 weight portions
Electric forging coal 4---10 weight portions
Petroleum coke 24---32 weight portions
Coal tar pitch 16---23 weight portions.
Its additional technical feature is: the particle diameter of said electric forging coal more than or equal to 4mm smaller or equal to 10mm; The particle diameter of said petroleum coke more than or equal to 0.05mm smaller or equal to 0.075mm.
For solving above-mentioned second problem, the preparation method that titanium slag of the present invention is smelted special-purpose carbon resistance rod comprises the following steps:
The first step: in broken, screening, abrasive dust
With the solid material electric forging coal crushing and screening after forging, with petroleum coke, the broken a part of crushing and screening of graphite, a part is used the ball mill abrasive dust;
Second step: batching and dried mixing
---24 weight portion particle diameters are broken smaller or equal to the graphite of 4mm, 12, and---20 weight portion particle diameters are broken smaller or equal to the graphite of 10mm greater than 4mm, 8---14 weight portion particle diameters are broken smaller or equal to the graphite of 16mm greater than 10mm, 40 weight portion particle diameters are more than or equal to the petroleum coke of 0.05mm smaller or equal to 0.075mm for 4---10 weight portion particle diameters are more than or equal to 4mm electric forging coals, 30 smaller or equal to 10mm---to weigh up 16 by the said component of claim 1 with the electronics feed proportioning system; The laggard continuous high-efficient of preparing burden mixes and pinches in pot heating cabinet; Energising heating 8---10 minutes; Raw material is heated to 170 ℃---and stir to mixing to pinch in the pot under 190 ℃, mixing time is 2---3 minutes;
The 3rd step: mix and pinch
Raw material stirring 2------190 ℃ 16---23 weight portion modified coal asphalts are 155 in temperature---165 ℃ mix down pinch 10---15 minutes that after 3 minutes, add 180; To mix the thickener of pinching then and be cooled to 140---after 150 ℃, for use in sticking with paste to waking up down jar;
The 4th step: moulding
Be transported in the mould with belt conveyor mixing the thickener of pinching, with hydraulic standing vibrating forming machine vibrating forming, the vibrations time is 5---8 minutes; Keep-up pressure after vibrations are accomplished and leave standstill 15---25 minutes; Pressurize is opened mould later and is released product,---cools off 4 in 40 ℃ the water---5 hours 25, and cooling is promptly produced titanium slag and smelted special-purpose carbon resistance rod raw product after accomplishing;
The 5th step: roasting
The carbon resistance rod raw product is delivered to baking furnace; The vertically upright dress of at first shove charge, green compact, distance 100---the 120mm between the green compact, green compact and kiln wall distance 200---250mm, shop, green compact lower end 150---the metallurgical coke of 250mm thickness, the green compact upper end covers 400---the metallurgical coke of 500mm thickness; Carry out temperature control then; With per hour 2.5---3 ℃ average heating speed rises to 250 ℃ of temperature from room temperature; With per hour 1.0---1.2 ℃ average heating speed rises to 450 ℃ of temperature by 250 ℃; With per hour 1.5---2 ℃ average heating speed rises to 600 ℃ of temperature by 450 ℃, with per hour 3.5---4 ℃ average heating speed rises to 1050 ℃ of temperature by 600 ℃; Final calcination temperature is 1000---1050 ℃; Roasting back well adopts the natural cooling mode to lower the temperature, and per hour lowers the temperature 5---and 8 ℃; Come out of the stove when product is cooled to below 400 ℃, be titanium slag and smelt the electrode special roasting product;
The 6th step: machine work
The carbon resistance rod roasting product that is up to the standards through bore hole, boring head, turning, mill public head thread, mill female head thread operation, promptly produce titanium slag and smelt special-purpose carbon resistance rod finished product.
Titanium slag provided by the present invention is smelted special-purpose carbon resistance rod; With solid material electric forging coal, petroleum coke, graphite after forging brokenly sieve, electronic proportioning system batching back gets into to mix and pinches pot and stir, do and mix; Add coal tar pitch then and mix and to pinch, produce titanium slag through moulding, roasting and machine work again and smelt special-purpose carbon resistance rod finished product.Titanium slag is smelted special-purpose carbon resistance rod and is not had asphalt volatile constituents, the close height of body, low, the good in oxidation resistance of ash content; Smelt special-purpose carbon resistance rod with titanium slag and replace self-baking electrode; Titanium slag is smelted producer and need not self-baking; Naturally the flue gas fugitive constituent that does not yet just have roasting to distribute does not in use have discharge of harmful gases, has realized environmental protection.Because titanium slag is smelted the direct installation of special-purpose carbon resistance rod and can be used, and does not have the self-baking process, has saved the electric quantity consumption in the self-baking electrode roasting process; Realized energy-conservation; And simple installation can not cause the generation of soft disconnected, the disconnected firmly accident of electrode owing to careless manipulation, has improved fail safe greatly.Special-purpose carbon resistance rod resistivity is low, bulk density is high because titanium slag is smelted in addition, so consumable electrode is little, also provides cost savings for the titanium slag smelting.Simultaneously, titanium slag is smelted special-purpose carbon resistance rod and can be improved into stove power and electrothermal furnace efficient, shortens the heat, and has bigger energy conservation potential.
Description of drawings
Fig. 1 smelts the structural representation of special-purpose carbon resistance rod for titanium slag of the present invention.
Embodiment
Operation process and structure thereof below in conjunction with accompanying drawing and specific embodiment are smelted special-purpose carbon resistance rod to preparation titanium slag provided by the present invention are done further detailed description.
As shown in the figure, titanium slag is smelted special-purpose carbon resistance rod and is comprised electrode body 1, and electrode body 1 two ends are respectively arranged with the public affairs that are complementary 2, female 3, and public 2, female 3 has external screw thread 4, the internal thread 5 that is complementary.
Embodiment 1:
The first step: in broken, screening, abrasive dust
With the solid material electric forging coal crushing and screening after forging, with petroleum coke, the broken a part of crushing and screening of graphite, a part is used the ball mill abrasive dust;
Second step: batching and dried mixing
With the electronics feed proportioning system weigh up that 16 weight portion particle diameters are broken smaller or equal to the graphite of 4mm, 12 weight portion particle diameters are broken smaller or equal to the graphite of 10mm greater than 4mm, 8 weight portion particle diameters are broken smaller or equal to the graphite of 16mm greater than 10mm, 4 weight portion particle diameters more than or equal to 4mm smaller or equal to the electric forging coal of 10mm, 24 weight portion particle diameters more than or equal to the petroleum coke of 0.05mm smaller or equal to 0.075mm; The laggard continuous high-efficient of preparing burden mixes and pinches in pot heating cabinet; Energising heating 8 minutes; Raw material is heated under 170 ℃ and stirs to mixing to pinch in the pot, and mixing time is 2 minutes;
The 3rd step: mix and pinch
After the raw material stirring 2 minutes, adding 180 ℃ 16 weight portion modified coal asphalts, is 155 ℃ of mixed down pinching 10 minutes in temperature.After will mixing the thickener of pinching then and being cooled to 140 ℃, for use in sticking with paste to waking up down jar;
The 4th step: moulding
Be transported in the mould with belt conveyor mixing the thickener of pinching, with hydraulic standing vibrating forming machine vibrating forming, the vibrations time is 5 minutes.Keep-up pressure after vibrations are accomplished and leave standstill 15 minutes.Pressurize is opened mould later and is released product, and cooling is 4 hours in 25 ℃ water, and cooling is promptly produced titanium slag and smelted special-purpose carbon resistance rod raw product after accomplishing;
The 5th step: roasting
The carbon resistance rod raw product is delivered to baking furnace.The vertically upright dress of at first shove charge, green compact, between the green compact apart from 100mm, green compact and kiln wall be apart from 200mm, the metallurgical coke of shop, green compact lower end 150mm thickness, the metallurgical coke of green compact upper end covering 400mm thickness.Carry out temperature control then; Rise to 250 ℃ of temperature with 2.5 ℃ average heating speed per hour from room temperature; Rise to 450 ℃ of temperature with 1.0 ℃ average heating speed per hour by 250 ℃; Rise to 600 ℃ of temperature with 1.5 ℃ average heating speed per hour by 450 ℃, rise to 1050 ℃ of temperature by 600 ℃ with 3.5 ℃ average heating speed per hour.Final calcination temperature is 1000---1050 ℃.Roasting back well adopts the natural cooling mode to lower the temperature, and per hour lowers the temperature 5 ℃.Come out of the stove when product is cooled to below 400 ℃, be titanium slag and smelt the electrode special roasting product;
The 6th step: machine work
The carbon resistance rod roasting product that is up to the standards goes out the electrode body 1 that two ends have public 2, female 3 through bore hole, boring head, turning working procedure processing; Through milling public head thread, milling female head thread operation and on public 2, female 3, process external screw thread 4, the internal thread 5 that is complementary, promptly produce titanium slag and smelt special-purpose carbon resistance rod finished product then.
Embodiment 2:
The first step: in broken, screening, abrasive dust
With the solid material electric forging coal crushing and screening after forging, with petroleum coke, the broken a part of crushing and screening of graphite, a part is used the ball mill abrasive dust;
Second step: batching and dried mixing
With the electronics feed proportioning system weigh up that 20 weight portion particle diameters are broken smaller or equal to the graphite of 4mm, 16 weight portion particle diameters are broken smaller or equal to the graphite of 10mm greater than 4mm, 11 weight portion particle diameters are broken smaller or equal to the graphite of 16mm greater than 10mm, 7 weight portion particle diameters more than or equal to 4mm smaller or equal to the electric forging coal of 10mm, 28 weight portion particle diameters more than or equal to the petroleum coke of 0.05mm smaller or equal to 0.075mm; The laggard continuous high-efficient of preparing burden mixes and pinches in pot heating cabinet; Energising heating 9 minutes; Raw material is heated under 180 ℃ and stirs to mixing to pinch in the pot, and mixing time is 2.5 minutes;
The 3rd step: mix and pinch
After the raw material stirring 2.5 minutes, adding 185 ℃ 19 weight portion modified coal asphalts, is 160 ℃ of mixed down pinching 13 minutes in temperature.After will mixing the thickener of pinching then and being cooled to 145 ℃, for use in sticking with paste to waking up down jar;
The 4th step: moulding
Be transported in the mould with belt conveyor mixing the thickener of pinching, with hydraulic standing vibrating forming machine vibrating forming, the vibrations time is 6.5 minutes.Keep-up pressure after vibrations are accomplished and leave standstill 20 minutes.Pressurize is opened mould later and is released product, and cooling is 4.5 hours in 32 ℃ water, and cooling is promptly produced titanium slag and smelted special-purpose carbon resistance rod raw product after accomplishing;
The 5th step: roasting
The carbon resistance rod raw product is delivered to baking furnace.The vertically upright dress of at first shove charge, green compact, between the green compact apart from 110mm, green compact and kiln wall be apart from 225mm, the metallurgical coke of shop, green compact lower end 200mm thickness, the metallurgical coke of green compact upper end covering 450mm thickness.Carry out temperature control then; Rise to 250 ℃ of temperature with 2.8 ℃ average heating speed per hour from room temperature; Rise to 450 ℃ of temperature with 11 ℃ average heating speed per hour by 250 ℃; Rise to 600 ℃ of temperature with 1.8 ℃ average heating speed per hour by 450 ℃, rise to 1050 ℃ of temperature by 600 ℃ with 3.7 ℃ average heating speed per hour.Final calcination temperature is 1000---1050 ℃.Roasting back well adopts the natural cooling mode to lower the temperature, and per hour lowers the temperature 6.5 ℃.Come out of the stove when product is cooled to below 400 ℃, be titanium slag and smelt the electrode special roasting product;
The 6th step: machine work
The carbon resistance rod roasting product that is up to the standards goes out the electrode body 1 that two ends have public 2, female 3 through bore hole, boring head, turning working procedure processing; Through milling public head thread, milling female head thread operation and on public 2, female 3, process external screw thread 4, the internal thread 5 that is complementary, promptly produce titanium slag and smelt special-purpose carbon resistance rod finished product then.
Embodiment 3:
The first step: in broken, screening, abrasive dust
With the solid material electric forging coal crushing and screening after forging, with petroleum coke, the broken a part of crushing and screening of graphite, a part is used the ball mill abrasive dust;
Second step: batching and dried mixing
With the electronics feed proportioning system weigh up that 24 weight portion particle diameters are broken smaller or equal to the graphite of 4mm, 20 weight portion particle diameters are broken smaller or equal to the graphite of 10mm greater than 4mm, 14 weight portion particle diameters are broken smaller or equal to the graphite of 16mm greater than 10mm, 10 weight portion particle diameters more than or equal to 4mm smaller or equal to the electric forging coal of 10mm, 32 weight portion particle diameters more than or equal to the petroleum coke of 0.05mm smaller or equal to 0.075mm; The laggard continuous high-efficient of preparing burden mixes and pinches in pot heating cabinet; Energising heating 10 minutes; Raw material is heated under 190 ℃ and stirs to mixing to pinch in the pot, and mixing time is 3 minutes;
The 3rd step: mix and pinch
After the raw material stirring 3 minutes, adding 190 ℃ 23 weight portion modified coal asphalts, is 165 ℃ of mixed down pinching 15 minutes in temperature.After will mixing the thickener of pinching then and being cooled to 150 ℃, for use in sticking with paste to waking up down jar;
The 4th step: moulding
Be transported in the mould with belt conveyor mixing the thickener of pinching, with hydraulic standing vibrating forming machine vibrating forming, the vibrations time is 8 minutes.Keep-up pressure after vibrations are accomplished and leave standstill 25 minutes.Pressurize is opened mould later and is released product, and cooling is 5 hours in 40 ℃ water, and cooling is promptly produced titanium slag and smelted special-purpose carbon resistance rod raw product after accomplishing;
The 5th step: roasting
The carbon resistance rod raw product is delivered to baking furnace.The vertically upright dress of at first shove charge, green compact, between the green compact apart from 120mm, green compact and kiln wall be apart from 250mm, the metallurgical coke of shop, green compact lower end 250mm thickness, the metallurgical coke of green compact upper end covering 500mm thickness.Carry out temperature control then; Rise to 250 ℃ of temperature with 3 ℃ average heating speed per hour from room temperature; Rise to 450 ℃ of temperature with 1.2 ℃ average heating speed per hour by 250 ℃; Rise to 600 ℃ of temperature with 2 ℃ average heating speed per hour by 450 ℃, rise to 1050 ℃ of temperature by 600 ℃ with 4 ℃ average heating speed per hour.Final calcination temperature is 1000---1050 ℃.Roasting back well adopts the natural cooling mode to lower the temperature, and per hour lowers the temperature 8 ℃.Come out of the stove when product is cooled to below 400 ℃, be titanium slag and smelt the electrode special roasting product;
The 6th step: machine work
The carbon resistance rod roasting product that is up to the standards goes out the electrode body 1 that two ends have public 2, female 3 through bore hole, boring head, turning working procedure processing; Through milling public head thread, milling female head thread operation and on public 2, female 3, process external screw thread 4, the internal thread 5 that is complementary, promptly produce titanium slag and smelt special-purpose carbon resistance rod finished product then.
Claims (1)
1. titanium slag is smelted the preparation method of special-purpose carbon resistance rod, it is characterized in that comprising the following steps:
The first step: in broken, screening, abrasive dust
With the solid material electric forging coal crushing and screening after forging, with petroleum coke, the broken a part of crushing and screening of graphite, a part is used the ball mill abrasive dust;
Second step: batching and dried mixing
---24 weight portion particle diameters are broken smaller or equal to the graphite of 4mm, 12, and---20 weight portion particle diameters are broken smaller or equal to the graphite of 10mm greater than 4mm, 8---14 weight portion particle diameters are broken smaller or equal to the graphite of 16mm greater than 10mm, 32 weight portion particle diameters are more than or equal to the petroleum coke of 0.05mm smaller or equal to 0.075mm for 4---10 weight portion particle diameters are more than or equal to 4mm electric forging coals, 24 smaller or equal to 10mm---to weigh up 16 with the electronics feed proportioning system; The laggard continuous high-efficient of preparing burden mixes and pinches in pot heating cabinet; Energising heating 8---10 minutes; Raw material is heated to 170 ℃---and stir to mixing to pinch in the pot under 190 ℃, mixing time is 2---3 minutes;
The 3rd step: mix and pinch
Raw material stirring 2------190 ℃ 16---23 weight portion modified coal asphalts are 155 in temperature---165 ℃ mix down pinch 10---15 minutes that after 3 minutes, add 180; To mix the thickener of pinching then and be cooled to 140---after 150 ℃, for use in sticking with paste to waking up down jar;
The 4th step: moulding
Be transported in the mould with belt conveyor mixing the thickener of pinching, with hydraulic standing vibrating forming machine vibrating forming, the vibrations time is 5---8 minutes; Keep-up pressure after vibrations are accomplished and leave standstill 15---25 minutes; Pressurize is opened mould later and is released product,---cools off 4 in 40 ℃ the water---5 hours 25, and cooling is promptly produced titanium slag and smelted special-purpose carbon resistance rod raw product after accomplishing;
The 5th step: roasting
The carbon resistance rod raw product is delivered to baking furnace; The vertically upright dress of at first shove charge, green compact, distance 100---the 120mm between the green compact, green compact and kiln wall distance 200---250mm, shop, green compact lower end 150---the metallurgical coke of 250mm thickness, the green compact upper end covers 400---the metallurgical coke of 500mm thickness; Carry out temperature control then; With per hour 2.5---3 ℃ average heating speed rises to 250 ℃ of temperature from room temperature; With per hour 1.0---1.2 ℃ average heating speed rises to 450 ℃ of temperature by 250 ℃; With per hour 1.5---2 ℃ average heating speed rises to 600 ℃ of temperature by 450 ℃, with per hour 3.5---4 ℃ average heating speed rises to 1050 ℃ of temperature by 600 ℃; Final calcination temperature is 1000---1050 ℃; Roasting back well adopts the natural cooling mode to lower the temperature, and per hour lowers the temperature 5---and 8 ℃; Come out of the stove when product is cooled to below 400 ℃, be titanium slag and smelt the electrode special roasting product;
The 6th step: machine work
The carbon resistance rod roasting product that is up to the standards through bore hole, boring head, turning, mill public head thread, mill female head thread operation, promptly produce titanium slag and smelt special-purpose carbon resistance rod finished product.
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| CN201010560915XA CN101983002B (en) | 2010-11-26 | 2010-11-26 | Special carbon electrode for smelting of titanium slag and preparation method thereof |
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| CN102355759B (en) * | 2011-07-22 | 2013-02-20 | 河北联冠电极股份有限公司 | Charcoal electrode specially used in smelting of ferroalloy and preparation method thereof |
| CN103249194B (en) * | 2013-05-21 | 2016-04-06 | 焦作市东星炭电极有限公司 | A kind of large-diameter high-graphite carbon electrode and production method thereof |
| CN103561498B (en) * | 2013-11-19 | 2015-07-08 | 重庆东星高温材料有限公司 | Carbon electrode special for ferrochrome smelting and manufacturing method thereof |
| CN104159349B (en) * | 2014-08-18 | 2016-05-25 | 河北联冠电极股份有限公司 | A kind of anti-oxidant carbonaceous electrode of large diameter that adds additive and preparation method thereof |
| CN105025602A (en) * | 2015-07-13 | 2015-11-04 | 河北联冠电极股份有限公司 | Carbon nanometer ultramicro material large carbon electrode and preparation method thereof |
| CN106376121B (en) * | 2016-08-26 | 2020-03-17 | 河北顺天电极有限公司 | High-graphite carbon electrode and preparation method thereof |
| CN111996374A (en) * | 2020-07-25 | 2020-11-27 | 安阳岷山环能高科有限公司 | Method for extracting metal lead and zinc by bottom blowing oxygen-enriched self-heating smelting-electric melting direct reduction |
| CN111996388A (en) * | 2020-07-25 | 2020-11-27 | 安阳岷山环能高科有限公司 | Method for extracting valuable metals from lead-zinc mixed ore |
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| CN1141008C (en) * | 2000-11-10 | 2004-03-03 | 孙天福 | Technology and mould for forming large-size hollow graphite electrode |
| CN1165497C (en) * | 2002-10-09 | 2004-09-08 | 涞水县长城电极有限公司 | Production technique of yellow phosphorus appropriation electrode |
| CN100505960C (en) * | 2003-07-24 | 2009-06-24 | 河北顺天电极有限公司 | A production process for carbon electrode containing scale graphite |
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Address after: 053200 Hengshui City, Hebei, Dazhai industrial district, Jizhou District Patentee after: Hebei Liangguan Intelligent Environmental Protection Equipment Co.,Ltd. Address before: 053200 Dazhai Industrial Zone, Jizhou City, Hengshui, Hebei Patentee before: HEBEI LIANGUAN CARBON ELECTRODE Co.,Ltd. |
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Granted publication date: 20120125 Termination date: 20211126 |