CN104480252B - A kind of high efficiency composition iron melt desulfurizing agent - Google Patents
A kind of high efficiency composition iron melt desulfurizing agent Download PDFInfo
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- CN104480252B CN104480252B CN201410830309.3A CN201410830309A CN104480252B CN 104480252 B CN104480252 B CN 104480252B CN 201410830309 A CN201410830309 A CN 201410830309A CN 104480252 B CN104480252 B CN 104480252B
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- desulfurizing agent
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- iron melt
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Abstract
The invention discloses a kind of high efficiency composition iron melt desulfurizing agent, belong to Ferrous Metallurgy auxiliary material technical field.A kind of high efficiency composition iron melt desulfurizing agent, its each component and its mass fraction are as follows：10 15 parts of zinc chloride；1 10 parts of silicomanganese scum；30 35 parts of aluminium powder；20 25 parts of alumina；5 10 parts of ring-type dimethyl organic silicone oil；5 10 parts of hydraulic oil；5 10 parts of soya-bean oil；58 parts of calcium aluminate；28 parts of organic acid.It can realize the efficient of desulfurizing iron and energy-conservation, and not increase desulfurizing iron integrated cost, and the sulfur content of desulfurized molten iron can reach<0.010%, and desulfurization time is only the 50% of traditional desulfurization time.
Description
Technical field
The invention belongs to Ferrous Metallurgy auxiliary material technical field, more specifically to a kind of high efficiency composition iron melt desulfurizing agent.
Background technology
Sulphur has harmful effect to the performance of steel in steel, makes plasticity and the toughness reduction of steel, and reduces surface and the tissue of steel
Performance.Steel needed for modern industry requires that sulfur content should<0.015%.For the sulfur content in reduction steel, the quality water of raising steel
It is flat.Desulfurization technology is handled outside molten iron furnace turns into the indispensable link of process for making.
Iron melt desulfurizing agent is divided into lime, calcium carbide system, soda system, the class of magnesium system 4.Some other material, such as rare earth element
Cerium, it has stronger affinity with sulphur, but lower than the desulphurizing ability of magnesium, and cost is high, therefore should not be used for handling a large amount of molten iron；Food
Salt and manganese carbonate ore mixture also can desulfurization, but a large amount of brown smoke salt steams and chlorine, severe contamination ring are volatilized during desulfurization
Border, therefore fail extensive use.
Chinese Patent Application No. CN01109969.0, publication number CN1317584 patent application document disclose a kind of use
Deoxidation and desulfurization almag in molten steel.The part (weight %) that studies of the invention alloy is：Al 30-98%, Mg 2-70%
And inevitable impurity.The alloy shape can be made into ring-type, wire, section shape or any of coccoid etc..The invention is closed
Gold plays the role of very strong deoxidation and desulfurization, and the good results are evident for deoxidization desulfuration.It is disadvantageous in that, due to the desulfurizing iron
Agent is using Mg, Al as desulfurization material, and cost is higher.Further, since having residual magnesium in molten iron, part magnesium is caused to lose, in height
Vapour pressure under temperature due to magnesium is too high, it is difficult to control, and makes the desulfuration efficiency of magnesium and reduces；When carrying out desulfurization process with magnesium, palpus is deep
Ladle, in favor of ensureing to plug in rifle depth；Simultaneously as largely using magnesium in raw material, magnesium is also avoided to meet wet generation dangerous.
The content of the invention
1. the technical problem to be solved
Cost for iron melt desulfurizing agent present in prior art is higher and the problem of low desulfuration efficiency, the invention provides
A kind of high efficiency composition iron melt desulfurizing agent.It can realize the efficient of desulfurizing iron and energy-conservation, and not increase desulfurizing iron integrated cost.
2. technical scheme
The purpose of the present invention is achieved through the following technical solutions.
A kind of high efficiency composition iron melt desulfurizing agent, its each component and its mass fraction are as follows：
Described organic acid be formic acid, acetic acid, ethanedioic acid,
Passivating solution is magnesium chloride, and weight is 0.6-0.7 parts.
Preferably, described each component and its mass fraction are as follows：
A kind of preparation method of high efficiency composition iron melt desulfurizing agent, its step is：
(1) dispensing, material is prepared according to following each component and mass fraction：
(2) preparation process：
A. by above-mentioned zinc chloride, processing is passivated, its technique is as follows：
Sprinkling：Additive is sprayed on zinc chloride powder surface in a reservoir, and takes the mode rotated in sprinkling to spray
Spill mixing；Wherein, additive is that 5-10 parts of ring-type dimethyl organic silicone oil, 5-10 parts of hydraulic oil, 5-10 parts of soya-bean oil are mixed；
Insulation：Be incubated 4 minutes at 100~1050 DEG C, make additive boilingization and volatilize completely adsorbed by ripe zinc chloride and
Form layer protecting film；
B. after the material made in following dispensing and step a is mixed, pretreatment is dried；
Passivating solution is poured into above-mentioned material again, stirred untill dry materials, be made after natural cooling, grinding powdery into
Product；
(3) it is fitted into the moistureproof container of energy or bag and closes stand-by.
Preferably, above-mentioned each raw material components and its mass fraction are as follows：
Preferably, described passivating solution is magnesium chloride, and weight is 0.6-0.7 parts, and magnesium chloride solution concentration is 65~80g/
L。
3. beneficial effect
Compared to prior art, the advantage of the invention is that：
(1) in technical scheme, ring-type dimethyl organic silicone oil, hydraulic oil, soya-bean oil are added, effect is in chlorine
Change zinc surface formation layer protecting film, extend the usage cycles of vulcanizing agent.In addition, from ring-type dimethyl organic silicone oil rather than
General silicone oil does not have residue after having volatility, and volatilization mainly due to ring-type dimethyl organic silicone oil, will not introduce
New impurity.Because the thermal coefficient of expansion of ring-type dimethyl organic silicone oil is larger, superpressure is easily caused, therefore adds thermal expansion simultaneously
Coefficient is smaller and is easy to the hydraulic oil of acquirement, soya-bean oil.Meanwhile, soya-bean oil boiling point is 230 degree, and low boiling point is easy to volatilization.From volatilization
Property strong material, be conducive to the progress of whole sweetening process, improve desulfurization degree, shorten desulfurization time；
(2) present invention compared with prior art, due to being covered with layer protecting film in chlorination zinc surface, effectively inhibits chlorination
The deliquescence of zinc, makes the resting period of desulfurizing agent extend to 5~6 weeks by present 1~2 week, and prevent add during it is right
The pollution of environment and the waste of lime resource；The more former desulfurizing agent reduction by more than 8% of desulfurizing agent unit consumption, during desulfurization cycle time
Between shorten；
(3) technical scheme is used, the sulfur content of desulfurized molten iron can reach<0.010%, and desulfurization time
The 50% of only traditional desulfurization time.
Embodiment
With reference to specific embodiment, the present invention is described in detail.
Embodiment 1
A kind of preparation method of high efficiency composition iron melt desulfurizing agent, its step is：
(1) dispensing, material is prepared according to following each component and mass fraction：
(2) preparation process：
A. by above-mentioned zinc chloride, processing is passivated, its technique is as follows：
Sprinkling：Additive is sprayed on zinc chloride powder surface in a reservoir, and takes the mode rotated in sprinkling to spray
Spill mixing；Wherein, additive is that 5 parts of ring-type dimethyl organic silicone oil, 5 parts of hydraulic oil, 5 parts of soya-bean oil are mixed；
Insulation：Be incubated 4 minutes at 100~1050 DEG C, make additive boilingization and volatilize completely adsorbed by ripe zinc chloride and
Form layer protecting film；
B. after the material made in following dispensing and step a is mixed, pretreatment is dried；
Passivating solution is poured into above-mentioned material again, stirred untill dry materials, be made after natural cooling, grinding powdery into
Product；
Passivating solution is magnesium chloride, and weight is 0.6 part, and magnesium chloride solution concentration is 65g/L.
(3) it is fitted into the moistureproof container of energy or bag and closes stand-by.
Through experiment, the desulfurizing agent prepared was housed after 37 days, and discovery has the appearance of powder differentiating phenomenon；Through on probation, ensureing
On the premise of desulfurized effect ([S] is 0.0015% after molten iron), the more former desulfurizing agent reduction by 7% of desulfurizing agent unit consumption, desulfurization week
Phase shortens 1.5 minutes compared with prior art.
Embodiment 2
A kind of preparation method of high efficiency composition iron melt desulfurizing agent, its step is：
(1) dispensing, material is prepared according to following each component and mass fraction：
(2) preparation process：
A. by above-mentioned zinc chloride, processing is passivated, its technique is as follows：
Sprinkling：Additive is sprayed on zinc chloride powder surface in a reservoir, and takes the mode rotated in sprinkling to spray
Spill mixing；Wherein, additive is that 6 parts of ring-type dimethyl organic silicone oil, 7 parts of hydraulic oil, 8 parts of soya-bean oil are mixed；
Insulation：Be incubated 4 minutes at 100~1050 DEG C, make additive boilingization and volatilize completely adsorbed by ripe zinc chloride and
Form layer protecting film；
B. after the material made in following dispensing and step a is mixed, pretreatment is dried；
Passivating solution is poured into above-mentioned material again, stirred untill dry materials, be made after natural cooling, grinding powdery into
Product；
Passivating solution is magnesium chloride, and weight is 0.7 part, and magnesium chloride solution concentration is 80g/L.
(3) it is fitted into the moistureproof container of energy or bag and closes stand-by.
Through experiment, the desulfurizing agent prepared was housed after 35 days, and discovery has the appearance of powder differentiating phenomenon；Through on probation, ensureing
On the premise of desulfurized effect ([S] is 0.0015% after molten iron), the more former desulfurizing agent reduction by 8% of desulfurizing agent unit consumption, desulfurization week
Phase shortens 1.8 minutes compared with prior art.
Embodiment 3
A kind of preparation method of high efficiency composition iron melt desulfurizing agent, its step is：
(1) dispensing, material is prepared according to following each component and mass fraction：
(2) preparation process：
A. by above-mentioned zinc chloride, processing is passivated, its technique is as follows：
Sprinkling：Additive is sprayed on zinc chloride powder surface in a reservoir, and takes the mode rotated in sprinkling to spray
Spill mixing；Wherein, additive is that 10 parts of ring-type dimethyl organic silicone oil, 10 parts of hydraulic oil, 10 parts of soya-bean oil are mixed；
Insulation：Be incubated 4 minutes at 100~1050 DEG C, make additive boilingization and volatilize completely adsorbed by ripe zinc chloride and
Form layer protecting film；
B. after the material made in following dispensing and step a is mixed, pretreatment is dried；
Passivating solution is poured into above-mentioned material again, stirred untill dry materials, be made after natural cooling, grinding powdery into
Product；
(3) it is fitted into the moistureproof container of energy or bag and closes stand-by.
Passivating solution is magnesium chloride, and weight is 0.7 part, and magnesium chloride solution concentration is 80g/L.
Through experiment, the desulfurizing agent prepared was housed after 40 days, and discovery has the appearance of powder differentiating phenomenon；Through on probation, ensureing
On the premise of desulfurized effect ([S] is 0.0013% after molten iron), the more former desulfurizing agent reduction by 8% of desulfurizing agent unit consumption, desulfurization week
Phase shortens 1.7 minutes compared with prior art.
Claims (2)
1. a kind of high efficiency composition iron melt desulfurizing agent, its each component and its mass fraction are as follows：
Described organic acid be formic acid, acetic acid, ethanedioic acid,
Passivating solution is magnesium chloride, and weight is 0.6-0.7 parts；
Above-mentioned compound iron melt desulfurizing agent, is prepared using following methods:
(1) dispensing, material is prepared according to following each component and mass fraction：
(2) preparation process：
A. by above-mentioned zinc chloride, processing is passivated, its technique is as follows：
Sprinkling：Additive is sprayed on zinc chloride powder surface in a reservoir, and takes the mode rotated in sprinkling to spray mixed
It is even；Wherein, additive is that 5-10 parts of ring-type dimethyl organic silicone oil, 5-10 parts of hydraulic oil, 5-10 parts of soya-bean oil are mixed；
Insulation：4 minutes are incubated at 100~1050 DEG C, makes additive boilingization and volatilize completely to be adsorbed and formed by ripe zinc chloride
Layer protecting film；
B. after the material made in following dispensing and step a is mixed, pretreatment is dried；
Passivating solution is poured into above-mentioned material again, stirred untill dry materials, powdery finished product is made after natural cooling, grinding；
(3) it is fitted into the moistureproof container of energy or bag and closes stand-by.
2. a kind of high efficiency composition iron melt desulfurizing agent according to claim 1, it is characterised in that described each component and its matter
Measure fraction as follows：
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| CN201410830309.3A CN104480252B (en) | 2014-12-29 | 2014-12-29 | A kind of high efficiency composition iron melt desulfurizing agent |
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| CN104480252B true CN104480252B (en) | 2017-11-03 |
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| CN104531935B (en) * | 2014-12-29 | 2017-12-05 | 芜湖金龙模具锻造有限责任公司 | A kind of preparation method of high efficiency composition iron melt desulfurizing agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986838A (en) * | 2006-12-30 | 2007-06-27 | 李继宗 | Steel making lime additive and its production process |
| CN102899439A (en) * | 2012-09-25 | 2013-01-30 | 薛华 | High-efficiency desulfurizer for molten iron |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016577A (en) * | 2007-02-15 | 2007-08-15 | 沈阳东北大学冶金技术研究所有限公司 | Passivation composite desulfurization powder |
| CN101586175B (en) * | 2009-06-26 | 2010-09-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Low magnesium type molten iron/semisteel desulfurizing agent and preparation method thereof |
| CN103695884B (en) * | 2013-12-10 | 2017-05-24 | 江苏正达炉料有限公司 | Passivating metal magnesium particles and passivating method thereof |
| CN104178598B (en) * | 2014-08-26 | 2016-01-06 | 武汉钢铁(集团)公司 | A kind of iron melt desulfurizing agent and preparation method thereof |
| CN104531935B (en) * | 2014-12-29 | 2017-12-05 | 芜湖金龙模具锻造有限责任公司 | A kind of preparation method of high efficiency composition iron melt desulfurizing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986838A (en) * | 2006-12-30 | 2007-06-27 | 李继宗 | Steel making lime additive and its production process |
| CN102899439A (en) * | 2012-09-25 | 2013-01-30 | 薛华 | High-efficiency desulfurizer for molten iron |
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