CN1105708A - Cleaning method for aluminium alloy smelting furnace and special cleaning agent - Google Patents
Cleaning method for aluminium alloy smelting furnace and special cleaning agent Download PDFInfo
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- CN1105708A CN1105708A CN 94100320 CN94100320A CN1105708A CN 1105708 A CN1105708 A CN 1105708A CN 94100320 CN94100320 CN 94100320 CN 94100320 A CN94100320 A CN 94100320A CN 1105708 A CN1105708 A CN 1105708A
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Abstract
The present invention relates to a prepurging method for aluminium alloy smelting furnace. It is characterized by that when prepurging, a special-purpose prepurging agent containing (wt%) 3-90% of fluxing agent and 10-97% of halogen-containing inorganic salt is injected so as to reduce melting point and viscosity of furnace slag, and make slag loose and easily separate from aluminium, and separate from furnace bottom and furnace wall, and easily remove the furnace slag, so that it can raise production efficiency, reduce cost and raise product quality. Said invention also can be used in zinc-alloy and copper-alloy smelting furnace.
Description
The present invention relates to furnace cleaning agent special-purpose in a kind of aluminium alloy smelting stove prepurging method and the prepurging process.
During smelting aluminium alloy, because slag and other heavy metal and aluminium mixture are in the deposition of smelting furnace bottom and furnace wall, not only influence the absorption of the capacity and the heat energy of body of heater, but also can make ingot casting produce bubble or be mingled with, finally influence production efficiency, production cost and quality product, so must prepurging behind the certain hour.
Prepurging method commonly used has:
1. stop before the prepurging producing, treat that fire box temperature is reduced to room temperature, adopt triangular spade, pricker to treat instrument, clinker is laid with manpower by the operator.Because furnace temperature generally all is more than 700 ℃, it is very long to adopt this method to take, and generally needs 7～10 days, and in addition, body of heater certainly will cause very big damage, directly influences body of heater work-ing life, and labor strength is also very big.
2. be sprinkled into Repone K during prepurging, the mixture of sodium-chlor, treat that with triangular spade, spade instrument strikes slag get off then, because the slag that knot invests in the body of heater is the mixture of aluminium, slag and heavy metal, fusing point is more than 1000 ℃, adopt this method prepurging, can bring very big damage to body of heater equally, the operator has very big labour intensity too.Yet, do not see the method for using special efficient furnace cleaning agent prepurging so far.
The objective of the invention is to provides the furnace cleaning agent of a kind of effective prepurging method and prepurging special use at the existing problem of prepurging method in above-mentioned aluminium alloy smelting, the castingprocesses.
The prepurging method of aluminium alloy smelting furnace of the present invention is characterized in that may further comprise the steps successively:
1. after aluminium alloy smelting finishes in the stove, immediately furnace temperature is risen to 850 ℃～950 ℃,
2. open fire door, will contain the furnace cleaning agent spray of Halogen inorganic salt and fusing assistant or spread to the attached slag of furnace bottom and furnace wall place,
3. the pass upper furnace door left standstill 3～5 minutes, and it is fully reacted,
4. open fire door, stir about 2～5 minutes of the mixture of furnace cleaning agent and attached slag gently, it is fully contacted, get rid of scum silica frost.
The special furnace cleaning agent that uses of the prepurging of aluminium alloy smelting of the present invention, casting is characterized in that its compositing range (weight percentage) is by reacting and emit big calorimetric fusing assistant rapidly and the Halogen inorganic salt are formed under the prepurging condition:
Fusing assistant 3～90%
Halogen inorganic salt 10～97%,
Fusing assistant wherein is meant at least a in powdered carbon and the nitrate, and described Halogen inorganic salt are meant any Halogen inorganic salt at least.
Aluminium alloy smelting stove furnace cleaning agent provided by the present invention, determining of its consumption is relevant with the length in the prepurging timed interval with the amount of capacity of smelting furnace, that is to say relevantly, generally calculate about 8～10 kilograms/meter by attached slag surface-area with attached slag what and attached slag thickness in the smelting furnace
2, can reach good result.
The solubility promoter of formation furnace cleaning agent of the present invention is meant under the prepurging situation rapid reaction takes place, and emits a large amount of heats, and the slag temperature is improved rapidly, makes that halogenide melts rapidly in the furnace cleaning agent, thereby reduces the material of slag fusing point, viscosity.The present invention recommends to select for use powdered carbon, nitrate.Normally used powdered carbon is wood charcoal powder, coal powder, nitrate commonly used is SODIUMNITRATE, saltpetre, both can select powdered carbon separately for use or select certain nitrate separately for use during actual the use, also can select the mixture of multiple nitrate or the mixture of multiple nitrate and powdered carbon for use.
The Halogen inorganic salt of formation furnace cleaning agent of the present invention can be the mixtures of any Halogen inorganic salt or multiple Halogen inorganic salt.Halogen inorganic salt commonly used comprise Repone K, sodium-chlor, Potassium monofluoride, Sodium Fluoride, potassium fluoborate, potassium silicofluoride, sodium fluoroaluminate, potassium fluoroaluminate, zinc chloride etc., are good with fluorinated inorganic salt or the Halogen inorganic salt mixt that includes the fluorine inorganic salt wherein.
The present invention is by under the prepurging situation, the place sprays into furnace cleaning agent at the attached slag of furnace bottom and furnace wall, fusing assistant reacts rapidly in the furnace cleaning agent, emit a large amount of heats, the slag temperature is improved rapidly, furnace cleaning agent halogenide is melted rapidly, thereby reduce the fusing point and the viscosity of the slag of contact therewith, make it to break away from furnace bottom and furnace wall, reach the purpose that the smelting furnace burner hearth is cleaned out.
Fluorinated inorganic salt in the Halogen inorganic salt can also adsorb and fuse aluminium sesquioxide, and makes the fused salt balling of having adsorbed oxide compound, makes itself and aluminium be easy to separate.
Fusing assistant in the furnace cleaning agent of the present invention and Halogen inorganic salt must have suitable ratio, the effect that competence exertion is best.Usually select for use: fusing assistant 3～90%(weight percentage), Halogen inorganic salt 10～97%(weight percentage).Content range is preferably: fusing assistant 5～40%(weight percent); Halogen inorganic salt 60～95%(weight percent).
In order to guarantee in use to use dusting device that furnace cleaning agent is sprayed into attached slag place, be generally below 5 orders.
The present invention compares with existing prepurging method, has following advantage:
1. realize the aluminum alloy melt casting continuous production, avoided stopping to produce because of prepurging.
2. avoided the damage of body of heater, can prolong body of heater work-ing life, realized the separation of aluminium and slag because of the slag of wherethrough reason, it is quite loose that slag has become, with Slag Tool very light just it can be taken off come out of the stove outside.
3. greatly reduce labour intensity.
4. because the attached slag of body of heater can constantly be removed, be mingled with in the aluminium alloy, the incidence of bubble also reduces greatly, improved aluminium alloy quality.
Embodiment
Took by weighing 20 kilograms of the wood charcoal powders of 5 mesh sieves, 30 kilograms in Repone K, 60 kilograms in sodium-chlor, 34 kilograms of Sodium Silicofluorides, 20 kilograms in Calcium Fluoride (Fluorspan), 30 kilograms of sodium fluoroaluminate, 6 kilograms of SODIUMNITRATE, wherein halide salts through 250 ℃ of oven dry, is cooled the back and puts into stirrer and mix with wood charcoal powder, SODIUMNITRATE
Take by weighing 100 kilograms of above-mentioned furnace cleaning agents, with dusting device is power with pressurized air, evenly spray into the clear six tons of attached slag of stove places (being warming up to 890 ℃), first quarter moon end, close upper furnace door, left standstill 5 minutes, open fire door, about 2 minutes of the mixture of stirring furnace cleaning agent and slag, this moment, attached slag became quite loose, and separated fully with furnace wall, furnace bottom, go out ground-slag clearly, prepurging promptly finishes.Use this method prepurging, do not need the blowing out operation, also do not need very big labour intensity, do not damage body of heater.
Claims (4)
1, a kind of aluminium alloy smelting stove prepurging method is characterized in that may further comprise the steps successively:
(1). after aluminium alloy smelting finishes in the stove, rise to 850～950 ℃ with being about to furnace temperature,
(2). open fire door, will contain the furnace cleaning agent spray of fusing assistant and Halogen inorganic salt or spread to the attached slag of furnace bottom and furnace wall place,
(3). close upper furnace door, left standstill 3～5 minutes,
(4). open fire door once more, stir about 2～5 minutes of the mixture of furnace cleaning agent and attached slag gently, get rid of scum silica frost.
2, the employed special-purpose furnace cleaning agent of a kind of prepurging according to claim 1 is characterized in that its compositing range (weight percentage) is by reacting and emit big calorimetric fusing assistant rapidly and the Halogen inorganic salt are formed under the prepurging condition:
Fusing assistant 3～90%,
Halogen inorganic salt 10～97%,
Fusing assistant wherein is meant at least a in powdered carbon and the nitrate, and described Halogen inorganic salt are meant any one Halogen inorganic salt at least.
3, furnace cleaning agent as claimed in claim 2 is characterized in that its compositing range (weight percentage) is:
Fusing assistant 5～40%
Halogen inorganic salt 60～95%.
4,, it is characterized in that having at least a kind of in the described Halogen inorganic salt is fluorinated inorganic salt as claim 2 or 3 described furnace cleaning agents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100320 CN1105708A (en) | 1994-01-18 | 1994-01-18 | Cleaning method for aluminium alloy smelting furnace and special cleaning agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100320 CN1105708A (en) | 1994-01-18 | 1994-01-18 | Cleaning method for aluminium alloy smelting furnace and special cleaning agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1105708A true CN1105708A (en) | 1995-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94100320 Pending CN1105708A (en) | 1994-01-18 | 1994-01-18 | Cleaning method for aluminium alloy smelting furnace and special cleaning agent |
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| CN (1) | CN1105708A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127650A (en) * | 2010-10-11 | 2011-07-20 | 镇江市丹徒区振华熔剂厂 | Zinc alloy flux |
| CN102127662A (en) * | 2010-10-11 | 2011-07-20 | 镇江市丹徒区振华熔剂厂 | Furnace cleaning agent |
| CN102181757A (en) * | 2011-06-20 | 2011-09-14 | 岳阳德利亨新材料科技有限公司 | Refining agent for smelting aluminum alloy and preparation method of refining agent |
| CN104073697A (en) * | 2014-07-11 | 2014-10-01 | 湖南创元铝业有限公司 | Furnace cleaning agent and application method thereof |
| CN105463477A (en) * | 2015-12-14 | 2016-04-06 | 西南铝业（集团）有限责任公司 | Washing method of alloy transfer smelting furnace |
| CN107142383A (en) * | 2017-04-26 | 2017-09-08 | 浙江今飞凯达轮毂股份有限公司 | Titanium additive and its preparation technology |
| CN108411122A (en) * | 2018-04-28 | 2018-08-17 | 长江师范学院 | The fluxing agent of ruthenium and the recovery method of basic solvent and ruthenium are recycled from supported ruthenium series catalysts waste material |
| CN109556417A (en) * | 2018-11-22 | 2019-04-02 | 昆山市超群金属制品有限公司 | A kind of efficient slag-cleaning agent and its application method |
| CN110791687A (en) * | 2019-12-25 | 2020-02-14 | 四川居里高科技有限责任公司 | Furnace cleaning agent and preparation method thereof |
| CN115058618A (en) * | 2022-06-29 | 2022-09-16 | 铜山县丰华工贸有限公司 | Slag remover for aluminum alloy smelting |
-
1994
- 1994-01-18 CN CN 94100320 patent/CN1105708A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127650A (en) * | 2010-10-11 | 2011-07-20 | 镇江市丹徒区振华熔剂厂 | Zinc alloy flux |
| CN102127662A (en) * | 2010-10-11 | 2011-07-20 | 镇江市丹徒区振华熔剂厂 | Furnace cleaning agent |
| CN102181757A (en) * | 2011-06-20 | 2011-09-14 | 岳阳德利亨新材料科技有限公司 | Refining agent for smelting aluminum alloy and preparation method of refining agent |
| CN104073697A (en) * | 2014-07-11 | 2014-10-01 | 湖南创元铝业有限公司 | Furnace cleaning agent and application method thereof |
| CN105463477A (en) * | 2015-12-14 | 2016-04-06 | 西南铝业（集团）有限责任公司 | Washing method of alloy transfer smelting furnace |
| CN107142383A (en) * | 2017-04-26 | 2017-09-08 | 浙江今飞凯达轮毂股份有限公司 | Titanium additive and its preparation technology |
| CN107142383B (en) * | 2017-04-26 | 2018-12-28 | 浙江今飞凯达轮毂股份有限公司 | Titanium additive and its preparation process |
| CN108411122A (en) * | 2018-04-28 | 2018-08-17 | 长江师范学院 | The fluxing agent of ruthenium and the recovery method of basic solvent and ruthenium are recycled from supported ruthenium series catalysts waste material |
| CN108411122B (en) * | 2018-04-28 | 2020-02-11 | 长江师范学院 | Flux and alkaline flux for recovering ruthenium from supported ruthenium catalyst waste and method for recovering ruthenium |
| CN109556417A (en) * | 2018-11-22 | 2019-04-02 | 昆山市超群金属制品有限公司 | A kind of efficient slag-cleaning agent and its application method |
| CN110791687A (en) * | 2019-12-25 | 2020-02-14 | 四川居里高科技有限责任公司 | Furnace cleaning agent and preparation method thereof |
| CN115058618A (en) * | 2022-06-29 | 2022-09-16 | 铜山县丰华工贸有限公司 | Slag remover for aluminum alloy smelting |
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