CN100381611C - Cold press moulding method for anode steel jaw protecting sleeve for aluminum and protecting sleeve produced thereby - Google Patents
Cold press moulding method for anode steel jaw protecting sleeve for aluminum and protecting sleeve produced thereby Download PDFInfo
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- CN100381611C CN100381611C CNB031387519A CN03138751A CN100381611C CN 100381611 C CN100381611 C CN 100381611C CN B031387519 A CNB031387519 A CN B031387519A CN 03138751 A CN03138751 A CN 03138751A CN 100381611 C CN100381611 C CN 100381611C
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Abstract
The present invention belongs to the technical field of an anode steel claw protecting sleeve for aluminum. The anode steel claw protecting sleeve for aluminum has a cold molding method that: dried base materials and oil agents are proportionally put into a kneading machine to be kneaded; extrusion molding is carried out at a normal temperature, and the molding pressure is more than 30Mpa. The proposed steel claw protecting sleeve is made from base materials and oil agents. The present invention adopts high pressure for molding, so the volume density of the product can reach 1.7 to 1.75 g/cm<3>. The application of the technology not only prevents air pollution, but also greatly shortens a production period. The present invention adopts cold compression technology to make a carbon protecting sleeve, so the volume density of the product is large, the intensity of the product is high, and the capabilities for resisting high temperature and corrosion are strong. A calcination process step is realized by a working principle of a user. The application of the technology fundamentally solves the problems of the discharge of toxic gas and environment pollution in the process of production. Moreover, the production period is greatly shortened, and the product yield can be increased by four times. The cost of the product can be reduced by more than 40%.
Description
Affiliated technical field
The invention belongs to aluminium anode steel pawl protective sleeve technical field, what relate generally to is a kind of cold compression molding method of aluminium anode steel pawl protective sleeve and the protective sleeve of producing with this processing method.
Background technology
At present, aluminum smelting technology industry ubiquity aluminum electrolytic pre-baked anode steel grab high temperature corrosion problem, and for solving this difficult problem, China scientific and technical personnel have done a large amount of research trial work, have also proposed many solutions.In early days more representational is to make jacket casing on the steel pawl with aluminium sheet, middle with the filling of carbon element thickener, because this technology cost when practical application is higher, operational difficulty (especially winter), the sleeve that aluminium is done is just melting less than 900 ℃, thereby can't to satisfy the user be the requirement of works better under 950 ℃ of environment in temperature.The technical scheme of now taking is with two semicircle carbocyclic rings, makes binding agent with carbon paste mud, and two semicircle carbon element rings is assembled on the steel claw position of corrosion-vulnerable.Because the production technique of this technology is that employing is hot-forming, be about to pitch and be heated to 150 ℃ to 180 ℃ melting and heat preservations, by proportioning butt material (pure refinery coke), finish (heated bitumen and coal tar) are put into 150 ℃ to 180 ℃ mixed the pinching 45-60 minute of kneading machine internal heating then, mixed thickener carry out more than 80 ℃ mechanical-moulded, forming pressure is 12-13Mpa, the work in-process carbocyclic ring of the forming stoving oven of also need packing into carries out roasting, and maturing temperature needs more than 1000 ℃.Though this technology more last technology aspect resistance to high temperature corrosion is far better, 1., cause atmospheric pollution but still exist following problem to be:, because coal tar, coal-tar pitch can be emitted a large amount of toxic gases at 150 ℃ to 180 ℃, the toxic gas of especially emitting in roasting process is even more serious; 2., the production cycle is long, is difficult to large-scale production, cause production cost occupy high-leveled and difficult down.For this reason, this technology still is difficult to satisfy user's needs.
Summary of the invention
Main purpose of the present invention is the cold compression molding method that proposes a kind of aluminium anode steel pawl protective sleeve, thereby shortens the production cycle, avoid environmental pollution.
Secondary objective of the present invention is to propose a kind of anode steel jaw protective sleeve of producing with aforesaid method, in order to the ubiquitous high temperature corrosion problem of effective solution aluminum electrolytic pre-baked anode steel grab.
Solving above-mentioned main purpose technical scheme is: by proportioning with butt material and finish put into kneading machine mix pinch after, carry out extrusion molding at normal temperatures, its forming pressure is more than the 30Mpa, described butt material is natural graphite and forges the back oil coke, or carbon baking is broken, or carbon baking broken and forge the back oil coke; Described finish is pitch and coal tar.
Above-mentioned kneading temperature parameter is 45-55 ℃, and the mold temperature parameter is 18-35 ℃.
The technical scheme that solves above-mentioned secondary objective is: steel pawl protective sleeve is made of butt material and finish, and the granularity of butt material is 0＜and≤4mm; The weight percentage ranges of butt material and finish is respectively: butt material 78-82%, finish 18-22%.
The butt material can select for use granularity be 0＜and≤natural graphite of 2mm and granularity be 0＜and≤4mm forge the back oil coke, natural graphite and the weight percentage ranges of forging the back oil coke are respectively: natural graphite 40-50%, forge back oil coke 50-60%.Natural graphite not only has the ideal erosion resistance, and its lubricity that has can play the effect that improves molding condition; It is extensive to forge back oil coke raw material sources, reduces production costs.
Be further to improve the use properties of butt material, the butt material also can select for use granularity be 0＜and≤carbon baking of 4mm is broken.The broken physical strength of carbon baking is higher than natural graphite and forges the back oil coke.
Produce needs for adapting to, reduce production costs, the butt material also can select for use granularity be 0＜and≤the broken and granularity of the carbon baking of 4mm is 0＜and≤4mm forge the back oil coke, carbon baking weight percentage ranges broken and that forge the back oil coke is respectively: the broken 40-50% of carbon baking, forge back oil coke 45-60%.
Finish is selected pitch and coal tar for use, and pitch and coal tar weight percentage range are respectively: pitch 70-90%, coal tar 10-30%.
Butt material granularity proportioning of the present invention strictness designs by piling up principle, and adopts high pressure to carry out moulding, makes the volume density of product can reach 1.7-1.75g/cm
3This highdensity product just directly uses for the user for not roasting and has established good basis, relend the purpose that helps user's prebaked anode principle of work to realize roasting, this The Application of Technology, promptly prevented atmospheric pollution, the production cycle is shortened greatly, under the situation of same fixed capital investment, output can improve 300%, and cost can descend more than 40%.
The present invention adopts cold-press process to make the carbon element protective sleeve, makes that small product size density is big, intensity is high, the resistance to high temperature corrosion ability is strong, and calcining process is that the principle of work by means of the user realizes.The application of this Technology has not only fundamentally solved and has discharged toxic gas in the production process, problem of environment pollution caused, and the production cycle is shortened greatly, and product production can be brought up to original three times, and the cost of product can descend more than 40%.
Description of drawings
Accompanying drawing of the present invention is the production technique schema.
Embodiment
Embodiment 1:
Protective sleeve of the present invention is made up of butt material and finish, and the butt material is selected natural graphite for use and forged refinery coke, and natural graphite and the weight percent of forging the back oil coke are: natural graphite 45%, granularity be 0＜and≤2mm forges back oil coke 55%, and granularity is 0＜and≤4mm; Finish is selected pitch and coal tar for use, and the weight percent of pitch and coal tar is respectively: it is 2% that pitch 70%, coal tar 30%, coal tar contain uncombined carbon.The weight percent of butt material and finish is: butt material 78%, finish 22%.
The production technique of present embodiment is as shown in drawings: by proportioning with butt material, finish put into kneading machine mix pinch after, carry out extrusion molding at normal temperatures, forming pressure is more than the 30Mpa.Wherein controlling the kneading temperature parameter is 45 ℃, and the mold temperature parameter is 18 ℃.
Embodiment 2:
Present embodiment aluminium anode steel pawl protective sleeve is made up of butt material and finish; the butt material selects for use carbon baking broken; the broken granularity of carbon baking is 0＜and≤4mm; finish is selected pitch and coal tar for use; the weight percent of pitch and coal tar is respectively: it is 3% that pitch 70%, coal tar 30%, coal tar contain uncombined carbon.The weight percent of butt material and finish is: butt material 80%, finish 20%.
The production technique of present embodiment is as shown in drawings: by proportioning with butt material, finish put into kneading machine mix pinch after, carry out extrusion molding at normal temperatures, forming pressure is more than the 35Mpa.Wherein controlling the kneading temperature parameter is 50 ℃, and the mold temperature parameter is 25 ℃.
Originally execute example 3:
Present embodiment aluminium anode steel pawl protective sleeve is made up of butt material and finish, and the butt material selects for use carbon baking broken and forge the back oil coke, and carbon baking is broken and forge back oil coke weight percent and be respectively: carbon baking is broken 60%, granularity is 0＜and≤4mm; Forge back oil coke 40%, granularity is 0＜and≤2mm.Finish is selected pitch and coal tar for use, and the weight percent of pitch and coal tar is respectively: it is 4% that pitch 90%, coal tar 10%, coal tar contain uncombined carbon.The weight percent of butt material and finish is: butt material 82%, finish 18%.
The production technique of present embodiment is as shown in drawings: by proportioning with butt material, finish put into kneading machine mix pinch after, carry out extrusion molding at normal temperatures, forming pressure is more than the 40Mpa.Wherein controlling the kneading temperature parameter is 55 ℃, and the mold temperature parameter is 35 ℃.
Claims (7)
1. the cold compression molding method of an aluminium anode steel pawl protective sleeve, it is characterized in that: by proportioning with butt material and finish put into kneading machine mix pinch after, carry out extrusion molding at normal temperatures, its forming pressure is more than the 30Mpa, described butt material is natural graphite and forges the back oil coke, or carbon baking is broken, or carbon baking broken and forge the back oil coke; Described finish is pitch and coal tar.
2. the cold compression molding method of aluminium anode steel pawl protective sleeve according to claim 1 is characterized in that: described kneading temperature parameter is 45-55 ℃, and the mold temperature parameter is 18-35 ℃.
3. aluminium anode steel pawl protective sleeve of making of the described method of claim 1, it is characterized in that: steel pawl protective sleeve is made of butt material and finish, and the butt material is natural graphite and forges the back oil coke, or carbon baking is broken, or carbon baking is broken and forge the back oil coke, its granularity is 0＜and≤4mm; Finish is pitch and coal tar; The weight percentage ranges of butt material and finish is respectively: butt material 78-82%, finish 18-22%.
4. aluminium anode steel pawl protective sleeve according to claim 3; it is characterized in that: described butt material can select for use granularity be 0＜and≤natural graphite of 2mm and granularity be 0＜and≤4mm forge the back oil coke; natural graphite is respectively with the weight percentage ranges of forging the back oil coke: natural graphite 40-50%, forge back oil coke 50-60%.
5. aluminium anode steel pawl protective sleeve according to claim 3 is characterized in that: described butt material select for use granularity be 0＜and≤carbon baking of 4mm is broken.
6. aluminium anode steel pawl protective sleeve according to claim 3; it is characterized in that: described butt material select for use granularity be 0＜and≤the broken and granularity of the carbon baking of 4mm is 0＜and≤4mm forge the back oil coke; carbon baking is broken to be respectively with the weight percentage ranges of forging the back oil coke: the broken 40-50% of carbon baking, forge back oil coke 45-60%.
7. aluminium anode steel pawl protective sleeve according to claim 3 is characterized in that: described pitch and coal tar weight percentage range are respectively: pitch 70-90%, coal tar 10-30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031387519A CN100381611C (en) | 2003-06-13 | 2003-06-13 | Cold press moulding method for anode steel jaw protecting sleeve for aluminum and protecting sleeve produced thereby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031387519A CN100381611C (en) | 2003-06-13 | 2003-06-13 | Cold press moulding method for anode steel jaw protecting sleeve for aluminum and protecting sleeve produced thereby |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1566405A CN1566405A (en) | 2005-01-19 |
| CN100381611C true CN100381611C (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031387519A Expired - Fee Related CN100381611C (en) | 2003-06-13 | 2003-06-13 | Cold press moulding method for anode steel jaw protecting sleeve for aluminum and protecting sleeve produced thereby |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855581A (en) * | 1981-09-29 | 1983-04-01 | Sumitomo Alum Smelt Co Ltd | Preparation of filler anode lump for soderberg type electrolytic furnace |
| US4687566A (en) * | 1985-03-06 | 1987-08-18 | Swiss Aluminium Ltd. | Protective collar for anode spade pin |
| CN1033530A (en) * | 1987-12-15 | 1989-06-28 | 崔学礼 | Low-resistance anti-oxidized self-baking anode for electrolyzing aluminium |
| CN2122148U (en) * | 1991-07-29 | 1992-11-18 | 包头铝厂 | Positive electrode protective ring for pre-baking bositive electrode al electrolytic tank |
| CN1026342C (en) * | 1990-03-13 | 1994-10-26 | 崔巍 | Particulate anode paste and process for preparing same |
| CN1341780A (en) * | 2001-08-28 | 2002-03-27 | 舒大平 | Protection cover of aluminium electrolytic prebaked anode steel jaw and its production method |
-
2003
- 2003-06-13 CN CNB031387519A patent/CN100381611C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855581A (en) * | 1981-09-29 | 1983-04-01 | Sumitomo Alum Smelt Co Ltd | Preparation of filler anode lump for soderberg type electrolytic furnace |
| US4687566A (en) * | 1985-03-06 | 1987-08-18 | Swiss Aluminium Ltd. | Protective collar for anode spade pin |
| CN1033530A (en) * | 1987-12-15 | 1989-06-28 | 崔学礼 | Low-resistance anti-oxidized self-baking anode for electrolyzing aluminium |
| CN1026342C (en) * | 1990-03-13 | 1994-10-26 | 崔巍 | Particulate anode paste and process for preparing same |
| CN2122148U (en) * | 1991-07-29 | 1992-11-18 | 包头铝厂 | Positive electrode protective ring for pre-baking bositive electrode al electrolytic tank |
| CN1341780A (en) * | 2001-08-28 | 2002-03-27 | 舒大平 | Protection cover of aluminium electrolytic prebaked anode steel jaw and its production method |
Non-Patent Citations (1)
| Title |
|---|
| 铝用炭素材料（续1）. 炭素技术，第5期. 1999 * |
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| CN1566405A (en) | 2005-01-19 |
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