CN104591150A - Production method for isostatic pressure graphite - Google Patents
Production method for isostatic pressure graphite Download PDFInfo
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- CN104591150A CN104591150A CN201310524396.5A CN201310524396A CN104591150A CN 104591150 A CN104591150 A CN 104591150A CN 201310524396 A CN201310524396 A CN 201310524396A CN 104591150 A CN104591150 A CN 104591150A
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Abstract
The invention discloses a production method for isostatic pressure graphite. The method includes: calcining petroleum coke and pitch coke at 1300DEG C, then grinding aggregate coke into powder with an average particle size of 10-20 micrometers; adding the well ground powder and a coal tar pitch binder into a heating type kneading machine to conduct kneading, then taking out the paste material and cooling it; crushing and grinding the paste material by a vertical roller mill, and taking the powder as the profiling raw material; filling a rubber die with the raw material to compact the pressed powder, carrying out sealing and vacuum pumping, discharging the air among the powder particles, placing the material into a water loaded high pressure container, conducting pressurization to 100-200MPa, and performing pressing to obtain a cylindrical product; carrying out roasting, keeping the temperature difference in the furnace lower than 20DEG C, and controlling the heating rate of the heating process less than 1DEG C/h; heating the roasted product to 3000DEG C and conducting graphitization; and putting the graphitized product into a halogen gas and conducting heating to 2000DEG C to remove impurities by volatilization. The production process is simple, and is easy to realize mass production.
Description
Technical field
The invention belongs to graphite technology field, be specifically related to a kind of production method of isostatic pressing formed graphite.
Background technology
Isostatic pressing formed graphite is a kind of New graphite material grown up the sixties in last century, has the performance of a series of excellence.Compared with common graphite, its fine structure is fine and close, and good uniformity; Thermal expansivity is very low, has excellent thermal shock resistance; Isotropy; Chemical resistance is strong, heat conductivility and conductivity good; There is excellent machining property.But prior art, isostatic pressing formed graphite complex manufacturing, product is anticorrosive and mechanical property is poor.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of production method of isostatic pressing formed graphite, processing method is simple, and convenient operation, production efficiency is high.
The production method of isostatic pressing formed graphite provided by the invention, comprises the following steps: refinery coke and pitch coke are calcined by (1) at 1300 DEG C, removes moisture and volatile matter; (2) use vertical roll grinder that aggregate coke is ground into the powder that mean particle size is 10-20 μm; (3) powder ground and coal-tar pitch cakingagent are put in heating-type kneading machine carry out kneading, make the burnt grain surface uniform of powder adhere to one deck pitch, after kneading, take out thickener, make it cool; (4) thickener is through vertical roller grinder crusher machine, abrasive dust, and mixes after being sieved into the particle of tens to hundreds of micron granularity, as die mould raw material; (5) raw material is filled in rubber mold, is vibrated by high-frequency electromagnetic, press-powder is obtained closely knit, vacuumize after sealing, discharge the air between powder particle, put into the high pressure vessel that water is housed, be pressurized to 100-200MPa, be pressed into cylindrical product; (6) carry out roasting, keep in-furnace temperature even, temperature difference <20 DEG C in stove, heat-processed heat-up rate <1 DEG C/h; (7) goods are carried out preheating, then vacuumize degassing in impregnating autoclave, then the coal-tar pitch melted is added in impregnating autoclave, pressurization makes dipping agent bitumen enter goods inside; (8) goods after roasting are heated to 3000 DEG C, carry out greying; (9) greying goods are put into halogen gas and be heated to 2000 DEG C, impurity is removed in volatilization.
The production method of isostatic pressing formed graphite provided by the invention, its beneficial effect is, after carrying out greying in the process of regenerative ratio, the volume density of goods, electric conductivity, thermal conductivity and corrosion resistance are improved significantly, and machining property have also been obtained improvement; Production technique is simple, easily realizes mass production.
Embodiment
Below in conjunction with an embodiment, the production method of isostatic pressing formed graphite provided by the invention is described in detail.
Embodiment
The production method of the isostatic pressing formed graphite of the present embodiment, comprises the following steps: refinery coke and pitch coke are calcined by (1) at 1300 DEG C, removes moisture and volatile matter; (2) use vertical roll grinder that aggregate coke is ground into the powder that mean particle size is 15 μm; (3) powder ground and coal-tar pitch cakingagent are put in heating-type kneading machine carry out kneading, make the burnt grain surface uniform of powder adhere to one deck pitch, after kneading, take out thickener, make it cool; (4) thickener is through vertical roller grinder crusher machine, abrasive dust, and mixes after being sieved into the particle of tens to hundreds of micron granularity, as die mould raw material; (5) raw material is filled in rubber mold, is vibrated by high-frequency electromagnetic, press-powder is obtained closely knit, vacuumize after sealing, discharge the air between powder particle, put into the high pressure vessel that water is housed, be pressurized to 150MPa, be pressed into cylindrical product; (6) carry out roasting, keep in-furnace temperature even, temperature difference <20 DEG C in stove, heat-processed heat-up rate <1 DEG C/h; (7) goods are carried out preheating, then vacuumize degassing in impregnating autoclave, then the coal-tar pitch melted is added in impregnating autoclave, pressurization makes dipping agent bitumen enter goods inside; (8) goods after roasting are heated to 3000 DEG C, carry out greying; (9) greying goods are put into halogen gas and be heated to 2000 DEG C, impurity is removed in volatilization.
Claims (1)
1. a production method for isostatic pressing formed graphite, is characterized in that: comprise the following steps: refinery coke and pitch coke are calcined by (1) at 1300 DEG C, removes moisture and volatile matter; (2) use vertical roll grinder that aggregate coke is ground into the powder that mean particle size is 10-20 μm; (3) powder ground and coal-tar pitch cakingagent are put in heating-type kneading machine carry out kneading, make the burnt grain surface uniform of powder adhere to one deck pitch, after kneading, take out thickener, make it cool; (4) thickener is through vertical roller grinder crusher machine, abrasive dust, and mixes after being sieved into the particle of tens to hundreds of micron granularity, as die mould raw material; (5) raw material is filled in rubber mold, is vibrated by high-frequency electromagnetic, press-powder is obtained closely knit, vacuumize after sealing, discharge the air between powder particle, put into the high pressure vessel that water is housed, be pressurized to 100-200MPa, be pressed into cylindrical product; (6) carry out roasting, keep in-furnace temperature even, temperature difference <20 DEG C in stove, heat-processed heat-up rate <1 DEG C/h; (7) goods are carried out preheating, then vacuumize degassing in impregnating autoclave, then the coal-tar pitch melted is added in impregnating autoclave, pressurization makes dipping agent bitumen enter goods inside; (8) goods after roasting are heated to 3000 DEG C, carry out greying; (9) greying goods are put into halogen gas and be heated to 2000 DEG C, impurity is removed in volatilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524396.5A CN104591150A (en) | 2013-10-31 | 2013-10-31 | Production method for isostatic pressure graphite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524396.5A CN104591150A (en) | 2013-10-31 | 2013-10-31 | Production method for isostatic pressure graphite |
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| CN104591150A true CN104591150A (en) | 2015-05-06 |
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| CN201310524396.5A Pending CN104591150A (en) | 2013-10-31 | 2013-10-31 | Production method for isostatic pressure graphite |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174251A (en) * | 2015-09-22 | 2015-12-23 | 成都炭素有限责任公司 | Preparation method of isostatic pressing formed graphite of ultra-thin structure |
| CN106242570A (en) * | 2016-07-22 | 2016-12-21 | 大同新成新材料股份有限公司 | A kind of production method of heat accumulation graphite product |
| CN106542530A (en) * | 2016-12-07 | 2017-03-29 | 凤城市宝山炭素有限公司 | 500 Φ of extrusion molding production major diameter Φ, 800 fine grained graphite manufacturing process |
| CN108059458A (en) * | 2017-12-26 | 2018-05-22 | 苏州浩焱精密模具有限公司 | A kind of preparation method of mold graphite material |
| CN108218430A (en) * | 2017-12-05 | 2018-06-29 | 大同新成新材料股份有限公司 | A kind of isostatic pressing formed graphite product and preparation method thereof |
| CN108424144A (en) * | 2018-05-03 | 2018-08-21 | 大同新成新材料股份有限公司 | A kind of preparation method of isostatic pressing formed graphite |
| CN108752046A (en) * | 2018-06-01 | 2018-11-06 | 大同新成新材料股份有限公司 | A kind of dipping method preparing isostatic pressing formed graphite product |
| CN112194488A (en) * | 2020-09-30 | 2021-01-08 | 中钢集团新型材料（浙江）有限公司 | Isostatic pressing graphite preparation process for processing craft products |
| CN113213937A (en) * | 2021-04-29 | 2021-08-06 | 杨斌 | Preparation process of one-step formed ultrahigh-purity isostatic pressing graphite material |
| CN114804880A (en) * | 2022-04-06 | 2022-07-29 | 宝丰县洁石碳素材料有限公司 | Method for processing graphite by electric spark |
-
2013
- 2013-10-31 CN CN201310524396.5A patent/CN104591150A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174251A (en) * | 2015-09-22 | 2015-12-23 | 成都炭素有限责任公司 | Preparation method of isostatic pressing formed graphite of ultra-thin structure |
| CN106242570A (en) * | 2016-07-22 | 2016-12-21 | 大同新成新材料股份有限公司 | A kind of production method of heat accumulation graphite product |
| CN106542530A (en) * | 2016-12-07 | 2017-03-29 | 凤城市宝山炭素有限公司 | 500 Φ of extrusion molding production major diameter Φ, 800 fine grained graphite manufacturing process |
| CN108218430A (en) * | 2017-12-05 | 2018-06-29 | 大同新成新材料股份有限公司 | A kind of isostatic pressing formed graphite product and preparation method thereof |
| CN108218430B (en) * | 2017-12-05 | 2020-07-24 | 大同新成新材料股份有限公司 | Isostatic pressing graphite product and preparation method thereof |
| CN108059458A (en) * | 2017-12-26 | 2018-05-22 | 苏州浩焱精密模具有限公司 | A kind of preparation method of mold graphite material |
| CN108424144A (en) * | 2018-05-03 | 2018-08-21 | 大同新成新材料股份有限公司 | A kind of preparation method of isostatic pressing formed graphite |
| CN108752046A (en) * | 2018-06-01 | 2018-11-06 | 大同新成新材料股份有限公司 | A kind of dipping method preparing isostatic pressing formed graphite product |
| CN112194488A (en) * | 2020-09-30 | 2021-01-08 | 中钢集团新型材料（浙江）有限公司 | Isostatic pressing graphite preparation process for processing craft products |
| CN113213937A (en) * | 2021-04-29 | 2021-08-06 | 杨斌 | Preparation process of one-step formed ultrahigh-purity isostatic pressing graphite material |
| CN114804880A (en) * | 2022-04-06 | 2022-07-29 | 宝丰县洁石碳素材料有限公司 | Method for processing graphite by electric spark |
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Application publication date: 20150506 |