CN101532130A - Molten metal anti-oxidation reducing agent, preparation method and application thereof - Google Patents
Molten metal anti-oxidation reducing agent, preparation method and application thereof Download PDFInfo
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- CN101532130A CN101532130A CN200910013926A CN200910013926A CN101532130A CN 101532130 A CN101532130 A CN 101532130A CN 200910013926 A CN200910013926 A CN 200910013926A CN 200910013926 A CN200910013926 A CN 200910013926A CN 101532130 A CN101532130 A CN 101532130A
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Abstract
The invention relates to a molten metal anti-oxidation reducing agent and a preparation method and application thereof. The molten metal anti-oxidation reducing agent comprises the following main compositions in portion by weight: 51.19 to 91.19 portions of nonylphenol polyoxyethylene ether, 3 to 15 portions of organic amine, 0.3 to 5 portions of phosphoric acid and 0.5 to 8 portions of phytic acid; the anti-oxidation reducing agent can further comprise essence in proper amount; and the molten metal anti-oxidation reducing agent is water-soluble oily liquid. The reducing agent has no flash point, does not splash when being added into molten metal and can automatically and rapidly diffuse; the molten metal anti-oxidation reducing agent is lighter than molten metal liquid and can overspread the whole flowing liquid level to isolate air and effectively prevent oxidation; contained active substances and organic or inorganic acid can disperse the inner gravitation of oxidized metal scruff, and actively scatter an inner structure of the oxidized metal scruff to reduce useful metal out; the reduction efficiency is 95 percent or so; cost performance is high; the residual scruff is little, soluble in water and convenient to clean; and the molten metal anti-oxidation reducing agent is convenient to maintain equipment.
Description
Technical field
The present invention relates to a kind of anti-oxidation reducing agent and its production and application, refer in particular to a kind of molten metal oxidation resisting and reducing agent and its production and application.
Background technology
In the industrial production, regular meeting relates to a kind of metal or alloy of fusion, the technology that makes itself and another kind of melts combine or adhere to.Because most metals contact with oxygen all can oxidation, getting rusty as iron promptly is the modal example of oxidation.Under hot environment, especially under melting state, the situation of metal (or alloy) oxidation can be more violent, can form one deck oxide compound very soon, and poly-more many more.And adhere in the bonded technological process at molten metal and other metals, the flow circuit that molten metal must not stop, this can aggravate oxidation rate on the one hand, means that on the other hand the oxide compound on top layer and a spot of oxygen can be brought to below the liquid level, i.e. liquid internal.Oxidation can take place equally in inside so.Oxide compound will be carried the floating liquid level of going up of good metal secretly like this, form scum silica frost.Because the generation that do not stop of scum silica frost, emersion causes the scum silica frost accumulation more and more, and is folded, more and more thicker mutually layer by layer, influence liquid level after several hours and flows, even produce excessively, pollutes danger again.The scum silica frost that is produced can not normally participate in the production process that merges, can only constantly salvage out otherwise processed.Because of after salvaging scum silica frost, liquid level is not enough, even it is not enough to produce consumption, can only ceaselessly add and replenish new raw metal.
For this reason, for avoid the molten metal oxidation as far as possible, need molten metal is carried out antioxidation treatment, at present, existing antioxidation processing technology mainly contains reductive agent reduction method, reduction machine facture, fills nitrogen insulation blocking method etc.Wherein increase reductive agent and reduce antioxidation method and adopt comparatively extensively, reductive agent commonly used has the gluey reducing substance of reducing powder, reducing metal and thickness etc.
Wherein, the employing reducing powder carries out the reductive mode of operation and is: at the molten metal fluid surface, sow flour, its deficiency or limitation performance are as follows:
A: use very inconvenience of form, because it is a flour, it is very not easy to operate to make an addition to the high-temperature molten metal surface, for the bigger liquid level of surface area, want to sow and evenly note again not ironed by high temperature, must be very careful, so use extremely inconvenience.
B: disperse easily, thereby cause waste and pollute,, and ventilation plant is arranged all generally above the molten metal liquid level, as sow and improper generation is dispersed, cause waste and pollute because be the dryness flour.
C: smog is bigger, and reducing powder is generally acid, alkali, salts substances, with after the molten metal liquid level contacts can and other auxiliary agents reactions, the back smog that is heated is bigger, original ventilation plant is not enough to wind is drained.
D: hazardness is bigger, as mentioned above, because of it is acid, alkali, salts substances, to human body, equipment, environment all have certain harm, calculate the saving of its effect back reduzate, and economic worth is not high.
And adopt the operating principle of reduction particle (metal) to be: in or the metal that mix identical with molten metal, add high-purity activity material (as reducing powder), cooling forming is made metallic particles (or metal segments), adds and molten metal liquid during use.Its weak point have following some:
A: costliness, from its preparation form promptly as can be known,, add actives because of having passed through the metal fusion, operations such as moulding, Master Cost and processing charges are all very high.
B: use-pattern is optimized inadequately, during use, drops in proportion in the molten metal liquid, allows metallic particles melt, and separates out reducing substance, recurrence reduction and anti-oxidation effect.Because of fusing needs a time, after separating out, actives is dissolved in metal liquid, spread evenly also non-easy thing rapidly.
C: alloy content changes than regular meeting, and not necessarily in full accord with the work alloy because of the metallic particles alloy ratio, the long-term input can change work alloy content ratio, and this sometimes change can bring serious quality consequence.
D: certain side effect is arranged, and wayward because of consumption requires accurately, because of production line is not balanced especially, it is excessive that some particle uses, and except causing waste, also can make work molten alloy tension force become big, on the contrary in conjunction with adhere to downgrade.
The method that adopts the gluey reducing substance of thickness is that more external companies release.Its principle of work is, adds active substance in viscous liquid, pours the molten metal liquid level during use into, through fully stirring, is spread in fluid surface, forms protective membrane, and continues to take place reductive action.Its limitation be following some:
A: spread rapidly inadequately, must effort stir.
B: viscosity is excessive, and regular meeting is attached to workpiece, causes product contamination, is difficult to clean.
C: the residual and molten metal mixture of its viscosity, in the flow of molten metal circulation, be attached to equipment unit, cause equipment circulation passage obstruction, not smooth, bring inconvenience to maintenance of the equipment.
D: throw out, stick at equipment unit, be similar to the resin type hard material, cleaning is difficulty very.Very inconvenience of corrective maintenance cleaning, in the long run, damage equipment is bound to.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of molten metal oxidation resisting and reducing agent, the very economical problem that solves molten metal generation oxidation scum easily of its energy; The preparation method and the application thereof of described molten metal oxidation resisting and reducing agent also are provided.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of molten metal oxidation resisting and reducing agent comprises following component: polyoxyethylene nonylphenol ether, organic amine, phosphoric acid, phytic acid;
Preferably, described molten metal oxidation resisting and reducing agent is water-soluble oily liquid, and this liquid does not have flash-point, can not splash the considerably less and water soluble of remaining scum silica frost in the time of in adding molten metal to.
Preferably, each component concentration (wt%) is as follows:
51.19～91.19 parts of polyoxyethylene nonylphenol ethers
3～15 parts of organic amines
0.3～5 part of phosphoric acid
0.5～8 part of phytic acid.
The invention provides the preparation method of above-mentioned molten metal oxidation resisting and reducing agent, described preparation method may further comprise the steps:
(a) earlier organic amine slowly is heated to 60-100 ℃, slowly adds polyoxyethylene nonylphenol ether, stirred 3～5 minutes;
(b) product for the treatment of step a is cooled to 30-100 ℃, and phosphoric acid, phytic acid are slowly added in the cooled product, stirs while adding simultaneously 10～15 minutes.
The present invention also provides the application of above-mentioned molten metal oxidation resisting and reducing agent in molten metal oxidation resistance is handled.
Preferably, described molten metal oxidation resisting and reducing agent directly is poured on the molten metal liquid level.
Preferably, described molten metal oxidation resisting and reducing agent can cooperate following method to use:
3～5 stainless steel catch are inserted 3～5cm below the liquid levels, the part of flow of molten metal is limited in the less zone; Described molten metal oxidation resisting and reducing agent is poured on the molten metal liquid level of the part that flows.
Preferably, described molten metal oxidation resisting and reducing agent can cooperate following method to use:
Screen cloth is set holding on the container of molten metal, described screen cloth is shaped as the U type, can match with the container that holds molten metal, and scum silica frost can not pass through sieve aperture, and molten metal can freely flow out from sieve aperture, and the container edge is higher than liquid level 1～2cm; Described molten metal oxidation resisting and reducing agent is poured on the interior molten metal liquid level of screen cloth.
The beneficial effect of molten metal oxidation resisting and reducing agent of the present invention is:
A: convenient use, easy handling
The present invention is water-soluble oily liquid, get final product during use in the molten metal liquid level, and the present invention adopts the tension force diffusion technique and is added with surfactant, when two kinds of liquid contacts, can produce parent/thin bipartite molecules key, reduce molten metal surface tension force, promote the automatic rapid diffusion of anti-oxidant reduction liquid simultaneously, other currently available productss then must add mechanical force (stirring) etc. just can be paved with whole liquid level; Add so adopt anti-oxidation reducing agent of the present invention to need only at several points, product can be rapidly " intelligence " to uncovered area diffusion and mobile, and anti-oxidation reducing agent promptly can be paved with whole liquid level after 3～5 seconds; Simultaneously, because of product continues to work for floating on molten liquid surface,, so also be convenient to operation so that the amount that adds does not require is very accurate.
B: can play anti-oxidation simultaneously and the active reductive action
Existing various method of reducing can only play a kind of effect usually, as fill nitrogen insulation blocking method and can only rise and prevent oxygenizement; Metallic particles/reducing powders etc. can only play restoring function, and prevent that oxidative function from not having.
And the present invention is liquid, is lighter than molten metal liquid, thereby can be paved with whole mobile liquid level secluding air (oxygen), effectively anti-oxidation.Simultaneously, contain active substance and organic or inorganic acid among the present invention, the inside gravitation of dispersible metal scum silica frost is initiatively broken up structure, and the reduction useful metal is got back in the container.
C: service hoisting binding ability
Use anti-oxidation reducing agent of the present invention, reduced shruff on the one hand, the molten metal liquid fluidity is more smooth and easy; On the other hand, the active substance that contains among the present invention (tensio-active agent) can reduce the fluid level gauge surface tension, increase molten metal flow, diffustivity, thereby promote the combination of molten metal or adhere to quality, thereby combination or attachment level that this operation will be reached improve greatly, and this is of the present invention one big characteristic.This also is existing other several reductive agents or method does not possess or usefulness is inaccessible.
D: with low cost, the cost performance height
Because of the present invention has adopted novel inexpensive activeconstituents, and reduction efficiency is very high, about about 95%, so the low greatly and additive method of unit reducing metal cost.Through measuring and calculating, can save metal and use 50% of total amount for this workshop section, economic benefit is considerable, and cost performance is very high.
E: effect is remarkable, continuous and effective
The present invention adopts new technology and processes, and it is poured into the molten metal liquid level gets final product, the former oxide compound that has produced, can when adding the back diffusion, the present invention reduction disappear, to the oxide compound of follow-up generation decomposition-reduction at any time, effect can be got instant result, and 4～5 hours continuous and effective.
F: clean easyly, optimize technology
The present invention is water-soluble oily liquid, and it is convenient to add, and can not disperse, and its density far is lighter than molten metal simultaneously, and can form a protective membrane at molten metal surface, plays the effective constituent continuous and effective, must not add repeatedly.
Simultaneously, because of oxide compound is constantly reduced, so the remaining scum silica frost that produced every day is considerably less, originally must clear up twice every day, now need only pause cleaning every day, two to three days (prime shift) clearly once gets final product greatly.And the residue water soluble that is produced, meet People's Republic of China's industrial solid castoff emission standard, stick to residue on the equipment and only need root out gently and get final product, or use our company's scavenger specially to soak to remove after 5～15 minutes and get final product.Slag is few, and cleaning time is few, has kept clean environment naturally, has optimized operation and cleaning procedure simultaneously.
G: be widely used; alternative fully used various reductive agents at present; and reduction machine method, fill nitrogen insulation blocking method etc.; the technological process that is used for a kind of metal or alloy of various fusions and another kind of melts combine or adheres to; for example, can be used for manual immersed solder, wave soldering weldprocedures such as (having plumbous or unleaded).
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment
The invention provides a kind of molten metal oxidation resisting and reducing agent, its main ingredient and weight part content thereof are as follows:
51.19～91.19 parts of polyoxyethylene nonylphenol ethers
3～15 parts of organic amines
0.3～5 part of phosphoric acid
0.5～8 part of phytic acid
Wherein, polyoxyethylene nonylphenol ether is as purposes such as emulsifying agent, wetting agent, dispersion agent, permeate agent, clean-out system, solubilizing agent;
Organic amine is the organic active agent, belongs to organic class, can reduce surface tension, changes surperficial materialization equilibrium conditions, makes scolder with wetting mutually by the weldering metal, can reduce oxidized metal, and enhancing helps the weldering ability;
Phosphoric acid is as the organic reaction catalyzer, refractory materials additive, activated carbon treatment agent etc.;
Phytic acid is as sequestrant, antioxidant, anti-corrosion of metal inhibitor etc.;
The present invention also can comprise quantity-unlimiting essence, to produce suitable fragrance in use, improves Working environment.
When preparation, earlier organic amine slowly is heated to 60-100 ℃, slowly add polyoxyethylene nonylphenol ether and stirred 3～5 minutes.To be cooled again phosphoric acid, phytic acid being stirred while adding lentamente to 60 ℃ got final product in 10～15 minutes.
Several concrete prescription of the present invention (each component is a weight part content) is provided below.
Prescription one
51.19 parts of polyoxyethylene nonylphenol ethers
15 parts of organic amines
5 parts of phosphoric acid
8 parts of phytic acid
Prescription two
65 parts of polyoxyethylene nonylphenol ethers
10 parts of organic amines
3 parts of phosphoric acid
7 parts of phytic acid
Prescription three
91.19 parts of polyoxyethylene nonylphenol ethers
3 parts of organic amines
0.5 part of phosphoric acid
0.3 part of phytic acid
Prescription four
51.19 parts of polyoxyethylene nonylphenol ethers
15 parts of methylamines
5 parts of phosphoric acid
8 parts of phytic acid
Prescription five
91.19 parts of polyoxyethylene nonylphenol ethers
3 parts of quadrols
0.3 part of phosphoric acid
0.5 part of phytic acid
Prescription six
70 parts of polyoxyethylene nonylphenol ethers
9 parts of trolamines
2 parts of phosphoric acid
4 parts of phytic acid
Prescription seven
80 parts of polyoxyethylene nonylphenol ethers
12 parts of bromination 4-butyl amines
3 parts of phosphoric acid
6 parts of phytic acid
Prescription eight
60 parts of polyoxyethylene nonylphenol ethers
6 parts of aniline
Phosphatase 24 part
2 parts of phytic acid
Though the difference to some extent on amounts of components of above-mentioned eight prescriptions, on the whole, its result of use difference is little.Physics, chemical property and poised principle to molten metal oxidation resisting and reducing agent of the present invention is further elaborated below.
Molten metal oxidation resisting and reducing agent of the present invention is light yellow transparent oily liquid, and proportion is 1.07 ± 0.05g/cm
3, have slight faint scent; Deposit in the Plastic Bottle (container), and be positioned over lucifuge, shady and cool place, normal temperature (5～40 degrees centigrade) can be deposited about 2 years down.Its working temperature is 183～300 degrees centigrade, no flash-point.Reductive agent of the present invention is smokeless, tasteless, pollution-free, and the ventilation system under general original working condition need not be transformed and can use, and it is very easy to import.
Physical aspect of the present invention is water-soluble oily liquid state, is different from existing reductive agent, and operation was convenient to add in the molten metal of liquid state when this oily liquid state helped using; Also help simultaneously on the molten metals in liquid state surface flow expansion fast.During use, only need anti-oxidation reducing agent of the present invention directly is poured into liquid level, promptly can spread rapidly voluntarily, be paved with whole liquid level.
Of the present invention anti-oxidant, the reductive action principle is as follows:
1, cuts off oxygen, thereby reduce amount of oxidation
Behind product adding molten metal surface, it is diffusion rapidly, and is paved with whole liquid level, forms layer protecting film, and the partition molten metal contacts with oxygen, thereby reduces amount of oxidation.
2, disperse froth structure, restore useful metal
After product adds the molten metal liquid level, product can soak in the scum silica frost slit, contain diffusion/dispersion agent in the product, play the diffusion froth structure, reduce its structural tension, make scum silica frost disperse rapidly, become the thick shape liquid state of dispersive rapidly from irregular event attitude, useful metal i.e. reduction at once flow back in the liquid bath, continues to participate in effective operation technology.
3, reduce the molten metal bath surface tension, improve in conjunction with adhering to quality
Because of the activeconstituents among the present invention (tensio-active agent) can change the molten metal bath surface tension, thereby improve molten metal flow and binding ability.
Through using and calculating, reduction efficiency of the present invention can reach 85%～95%, and can improve in conjunction with adhering to flowability more than 20%, correspondingly can save 30～50%/workshop section cost.
In order to save more, reach better economical effectiveness, in actual the use, anti-oxidation reducing agent of the present invention can cooperate following method to use:
One, water conservancy diversion method
The water conservancy diversion ratio juris is as follows: molten metal liquid is because of constantly circulating, so the oxide compound that produces is a lot.If the minimizing flow area will reduce amount of oxidation, thereby reductive agent also can be used less.
So, the specific practice of water conservancy diversion method is: make 3～5 stainless steel catch, approximately go deep into the following 3～5cm of liquid level, the part of flow of molten metal is limited in the less zone, it is static that most of liquid level is in, but can fully circulate again below the liquid level, not influence the original mode of operation of whole operation.
Two, collecting method
The collection ratio juris is as follows: the molten metal liquid level, have only the partial oxidation that flows or kick up serious, as with the scum silica frost of this part directly in the method for molten metal liquid level collection and treatment, can reach the effect of getting twice the result with half the effort.
So, the main points of collecting method are: according to the difference of the container that holds molten metal, the design screen cloth is shaped as the U type, and the metal liquid of kicking up can flow in this screen cloth, scum silica frost can not pass through sieve aperture, can be collected into interior, and molten metal can free flow out from sieve aperture, and the container edge can a little higher than liquid level 1～2CM, add reductive agent, at any time reduction.Scum silica frost can not be floated to elsewhere like this, and whole liquid level does not have scum silica frost substantially.
Cooperate and adopt these two kinds of householder methods.Can make reduction efficiency/usefulness higher, reach better economic benefit.
Claims (8)
1, a kind of molten metal oxidation resisting and reducing agent is characterized in that: described molten metal oxidation resisting and reducing agent comprises following component: polyoxyethylene nonylphenol ether, organic amine, phosphoric acid, phytic acid.
2, molten metal oxidation resisting and reducing agent as claimed in claim 1, it is characterized in that: described molten metal oxidation resisting and reducing agent is water-soluble oily liquid, described liquid does not have flash-point, can not splash the considerably less and water soluble of remaining scum silica frost in the time of in adding molten metal to.
3, molten metal oxidation resisting and reducing agent as claimed in claim 1 is characterized in that: described each ingredients weight parts content is as follows:
51.19～91.19 parts of polyoxyethylene nonylphenol ethers
3～15 parts of organic amines
0.3～5 part of phosphoric acid
0.5～8 part of phytic acid.
4, a kind of method for preparing molten metal oxidation resisting and reducing agent as claimed in claim 1, it is characterized in that: described preparation method may further comprise the steps:
(a) organic amine slowly is heated to 60-100 ℃, slowly adds polyoxyethylene nonylphenol ether, stirred 3～5 minutes;
(b) product for the treatment of step a is cooled to 30-100 ℃ phosphoric acid, phytic acid is slowly added in the cooled product, stirs while adding simultaneously 10～15 minutes.
5, the application of molten metal oxidation resisting and reducing agent as claimed in claim 1 in molten metal oxidation resistance is handled.
6, the application of molten metal oxidation resisting and reducing agent as claimed in claim 5 in antioxidation treatment is characterized in that: described molten metal oxidation resisting and reducing agent directly is poured on the molten metal liquid level.
7, the application of molten metal oxidation resisting and reducing agent as claimed in claim 6 in antioxidation treatment is characterized in that: described molten metal oxidation resisting and reducing agent also can cooperate following method to use:
3～5 stainless steel catch are inserted 3～5cm below the liquid levels, the part of flow of molten metal is limited in the less zone;
Described molten metal oxidation resisting and reducing agent is poured on the molten metal liquid level of the part that flows.
8, the application of molten metal oxidation resisting and reducing agent as claimed in claim 6 in antioxidation treatment is characterized in that: described molten metal oxidation resisting and reducing agent also can cooperate following method to use:
Screen cloth is set holding on the vessel port of molten metal, described screen cloth is the U type, and shape can match with the vessel port of holding molten metal, and scum silica frost can not pass through sieve aperture, and molten metal can freely flow out from sieve aperture, and the container edge is higher than liquid level 1～2cm;
Described molten metal oxidation resisting and reducing agent is poured on the interior molten metal liquid level of screen cloth.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100139263A CN101532130B (en) | 2009-01-12 | 2009-01-12 | Molten metal anti-oxidation reducing agent, preparation method and application thereof |
| PCT/CN2009/000038 WO2009092283A1 (en) | 2008-01-14 | 2009-01-13 | A molten-metal anti-oxidation reducer, method for preparing the same and the use thereof |
| JP2010541683A JP5784908B2 (en) | 2008-01-14 | 2009-01-13 | Molten metal antioxidant / reduction agent, its preparation and use |
| US12/748,697 US8075663B2 (en) | 2008-01-14 | 2010-03-29 | Anti-oxidative agent for molten metal, method of preparing and method of using thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100139263A CN101532130B (en) | 2009-01-12 | 2009-01-12 | Molten metal anti-oxidation reducing agent, preparation method and application thereof |
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| Publication Number | Publication Date |
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| CN101532130A true CN101532130A (en) | 2009-09-16 |
| CN101532130B CN101532130B (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100139263A Expired - Fee Related CN101532130B (en) | 2008-01-14 | 2009-01-12 | Molten metal anti-oxidation reducing agent, preparation method and application thereof |
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