CN1048417A - Artificial stone mill cathode charcoal and method for making thereof - Google Patents
Artificial stone mill cathode charcoal and method for making thereof Download PDFInfo
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- CN1048417A CN1048417A CN 90106860 CN90106860A CN1048417A CN 1048417 A CN1048417 A CN 1048417A CN 90106860 CN90106860 CN 90106860 CN 90106860 A CN90106860 A CN 90106860A CN 1048417 A CN1048417 A CN 1048417A
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- graphite
- waste product
- artificial stone
- stone mill
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Abstract
Artificial stone mill cathode charcoal and method for making thereof is characterized in that being main aggregate have drawn from waste product in the graphite use and waste product, resistance material in carbon element factory's greying production process and graphite bits that machining produced.Thereby, simplify and improved the common process method for making, need not to calcine and graphitization processing, shortened the production cycle.Enforcement of the present invention can make cathode carbon block for aluminium electrolysis reach reduction resistor rate, ash content, damage coefficient, and saves energy improves overall economic efficiency.
Description
The present invention is a kind of cathod carbon block used in aluminium electrolytic bath and method for making thereof.
At present, aluminum electrolyzing cell used cathode carbon pieces, GB GB8743～8744-88 and aluminium industry practical situation according to State Bureau of Standardization issued mainly contain two kinds of used for aluminium electrolysis conventional cathode charcoal piece and used for aluminium electrolysis schungite cathode carbon pieces.They are that mixed the pinching of aggregate and mid-temperature pitch is processed into by the hard coal after calcining.At present, by calcining and sinter process, can only make the resistivity of above-mentioned two kinds of charcoal pieces be reduced to 60 Ω mm
2/ m and 45 Ω mm
2/ m, and current consumption is bigger, can not satisfy the requirement of country to the aluminium industrial energy saving.Therefore, people manage to have done all improvement again, as patent of invention number 89100108 " natural graphite cathode carbon pieces and method for makings thereof ", are that to adopt natural graphite be aggregate, and through what be processed into, natural graphite divides two kinds of scale graphite and amorphous graphites.Scale graphite does not conform to the requirement of selecting materials because compressive strength is poor, and actual selected natural graphite belongs to amorphous graphite, but to be lower than 8% raw material less because of its ash content, so the quality instability, physical and chemical index is difficult to control to and expects that resistivity is 25 Ω mm in process of production
2/ m ash content is 7.81% physical and chemical index requirement, and repeats before and after granulating and forming and the calcining process, and the production cycle is prolonged, and influences economic benefit.
The invention provides a kind of new prescription of cathod carbon block used in aluminium electrolytic bath, simplify and improved common process and manufacture method, make every effort to reduce the resistivity and the ash content of charcoal piece, save the power consumption of electrolysis of aluminum, prolong the work-ing life of aluminium cell, improve the quality of aluminium, thereby improve overall economic efficiency.
The artificial graphite cathode carbon block of the present invention is achieved in that
The main component of this charcoal piece is a carbon, also contains more a spot of ash content, it is characterized in that its aggregate is that main body is through being processed into the synthetic graphite.Synthetic graphite have drawn from waste product in the graphite use and waste product, resistance material in carbon element factory's graphitizing process and graphite bits that machining produced, this can make the energy be fully utilized.
Realization is the technical scheme that main aggregate is used for making cathode carbon pieces with the synthetic graphite, correspondingly simplify and improved the common process method and the operation of producing cathode carbon pieces, broken in having kept, screening, abrasive dust, batching, mix pinch, operations such as cool material, moulding, roasting and machining.Saved calcination process, or the graphitization process that adopts in order to make cathode carbon pieces that lower resistivity be arranged, make it saves energy, shorten the production cycle.
The feature of operation of the present invention is as follows:
1, carbon content (weight percentage) is pulverized by following granularity and content respectively greater than 98% synthetic graphite.
Granularity content
2～4MM 30～32%
1～2MM 10～12%
0.5～1MM 5～6%
0～0.5MM 5～8%
100～200 orders 40～45%
2, percentage ratio is by weight got 20～23% mid-temperature pitch and (is measured with ring and ball method, its softening temperature is 65 °～75 ℃) and 77～80% after crushed synthetic graphites be main aggregate, wherein, it is broken to increase calcined anthracite, metallurgical coke, natural graphite or roasting by 0～30% of aggregate.Place 130 °～145 ℃ mixed to pinch pot and mix and pinch, the time is 20～25 minutes.
3, will mix thickener cold to 130 ℃ after pinching, moulding or available pressing machine more than 1500 tons are pressed into living cathode carbon pieces in the bobbing machine of again 130 ℃ thickener being packed into.
4, will give birth to cathode carbon pieces and place open type or formula with cover, ring-form calcining furnace, through 1150 ℃～1350 ℃ roastings.
At last, make it to become product innovation by machining with certain specification.
The present invention is by the technical requirements of above-mentioned artificial stone mill cathode charcoal that provides and manufacture method thereof, and excessive examination, lab scale put into practice, and the physical and chemical index contrast situation with it and other like product is listed as follows now:
The physical and chemical index contrast information slip of various cathode carbon pieces
From embodiment as can be seen, adopting the present invention is the main aggregate of making cathode carbon pieces with the synthetic graphite, and simplifies a kind of new solution of having improved conventional manufacture method, and its major advantage is:
1, every physical and chemical index of product such as resistivity, ash content (seeing preceding table for details) are better than the like product of present domestic market, main physical and chemical index far surpasses GB8743～8744-88 GB that State Bureau of Standardization issues, and the high conductance aluminium of developing than the Guizhou Aluminum Factory of being issued in " aluminum smelting technology appraisal of scientific and technological achievements meeting " that on December 1st, 1989, China Non-Ferrous Metal Corporation held again of semi-graphite is not more than 33 Ω .mm with charcoal piece resistivity simultaneously
2The advanced index of/m has also reduced by 8 Ω .mm
2/ m.
2, with synthetic graphite as the raw material of producing aggregate, can save calcination process, simplify making processes, save the energy, need not to carry out again graphitization processing, thereby save a large amount of electric energy.
3, synthetic graphite have drawn from produce and use in waste product and the resistance material in the graphitizing process.Wide material sources replace the calcined anthracite energy and material with waste product, have improved the use value of waste product greatly, have a very major and immediate significance current.
4, since artificial stone mill cathode charcoal than widely used used for aluminium electrolysis conventional cathode charcoal piece and used for aluminium electrolysis schungite cathode carbon pieces have that intensity is big, cell size is little, advantage such as resistivity and ash content are low, so can prolong the work-ing life of aluminium cell effectively, reduce the volts lost of cathode carbon pieces, improve overall economic efficiency.
Claims (3)
1, artificial stone mill cathode charcoal is that a kind of main component is the cathod carbon block used in aluminium electrolytic bath of carbon.The main aggregate that it is characterized in that it is have drawn from waste product in the graphite use and waste product, resistance material in carbon element factory's greying production process and graphite bits that machining produced.
2, the described artificial stone mill cathode charcoal of claim one, it is characterized in that with the waste product in the waste product in 70～100% graphite uses and the carbon element factory's greying production process be main aggregate, add quantitative calcined anthracite, coke or natural graphite, roasting is broken, through pulverizing, get mid-temperature pitch and mix to pinch and be processed into.
What 3, the described artificial stone mill cathode charcoal of claim one was adapted to main aggregate has drawn materials, has simplified and improved conventional manufacture method, it is characterized in that:
1, broken in having kept, screening, abrasive dust, batching, mix pinch, cool material, moulding, roasting and manufacturing procedure, only need bakes to burn the article, saved calcination process.
2, the main aggregate synthetic graphite is pulverized and is following different granularity and content:
Granularity content
2～4MM 30～32%
1～2MM 10～12%
0.5～1MM 5～6%
0～0.5MM 5～8%
100～200 orders 40～45%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106860 CN1014807B (en) | 1990-08-23 | 1990-08-23 | Producing method for artificial stone mill cathode charcoal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106860 CN1014807B (en) | 1990-08-23 | 1990-08-23 | Producing method for artificial stone mill cathode charcoal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1048417A true CN1048417A (en) | 1991-01-09 |
| CN1014807B CN1014807B (en) | 1991-11-20 |
Family
ID=4880307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106860 Expired CN1014807B (en) | 1990-08-23 | 1990-08-23 | Producing method for artificial stone mill cathode charcoal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014807B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986896B (en) * | 2005-12-23 | 2010-06-30 | 青铜峡市青鑫炭素有限责任公司 | High graphite content cathode carbon block for large aluminium product and its producing process |
| CN107805070A (en) * | 2017-10-30 | 2018-03-16 | 大同新成新材料股份有限公司 | A kind of graphene carbon slide plate |
| CN115784757A (en) * | 2022-12-05 | 2023-03-14 | 重庆东星炭素材料有限公司 | Preparation method of carbon block for graphitization furnace and graphite block prepared by using carbon block |
-
1990
- 1990-08-23 CN CN 90106860 patent/CN1014807B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986896B (en) * | 2005-12-23 | 2010-06-30 | 青铜峡市青鑫炭素有限责任公司 | High graphite content cathode carbon block for large aluminium product and its producing process |
| CN107805070A (en) * | 2017-10-30 | 2018-03-16 | 大同新成新材料股份有限公司 | A kind of graphene carbon slide plate |
| CN107805070B (en) * | 2017-10-30 | 2019-10-08 | 大同新成新材料股份有限公司 | A kind of graphene carbon slide plate |
| CN115784757A (en) * | 2022-12-05 | 2023-03-14 | 重庆东星炭素材料有限公司 | Preparation method of carbon block for graphitization furnace and graphite block prepared by using carbon block |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1014807B (en) | 1991-11-20 |
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