CN105648149A - Molten steel refining slag forming agent and manufacturing process thereof - Google Patents
Molten steel refining slag forming agent and manufacturing process thereof Download PDFInfo
- Publication number
- CN105648149A CN105648149A CN201610108785.3A CN201610108785A CN105648149A CN 105648149 A CN105648149 A CN 105648149A CN 201610108785 A CN201610108785 A CN 201610108785A CN 105648149 A CN105648149 A CN 105648149A
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- CN
- China
- Prior art keywords
- oxide
- steel refining
- slag forming
- refining slag
- slag former
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a molten steel refining slag forming agent. The molten steel refining slag forming agent comprises, by weight, 25-38% of aluminum oxide, 25-32% of silicon dioxide, 8-15% of manganese oxide, 15-20% of iron oxide, 10-18% of calcium oxide, 3-9% of calcium fluoride, 5-8% of titanium dioxide, 6-15% of magnesium oxide, less than or equal to 0.06% of sulfur, and the balance impurities. Compared with the prior art, the slag forming agent prepared through the process can overcome the defects of a low slag forming speed and a low dephosphorization rate existing in the steelmaking process, and can effectively lower the melting point of solid and the melting point of refractory substances, effectively shorten the preliminary-stage slag forming time and increase the end-point molten steel dephosphorization rate of a converter. The slag forming agent has the characteristics of being low in cost and reducing the melting point of furnace slag and can have the remarkable effects of saving energy, reducing consumption and lowering cost.
Description
Technical field
The present invention relates to molten steel slag former technical field, be specifically related to a kind of liquid steel refining slag former and production technology thereof.
Background technology
Slag former is to add the flux such as appropriate iron scale, fluorite, manganese oxide or other oxides with Calx, pre-formed at low temperatures. The fusing point of this synthetic slag agent is low, and basicity is high, and composition is uniform, and granularity is little, and at high temperature easily fragmentation, slagging speed is fast, thus alleviates the burden of converter slag-making. When steel-making, the sludging flux of addition, it is fused into slag with the oxidation product of impurity element in raw material, except S, P, absorbs non-metallic inclusion.
Existing composition brass pyrometallurgical smelting process, it is high that it smelts the copper products impurity content that, affect the quality of copper products, and existence slag is difficult, carry out slag speed slowly, big energy-consuming, the duration of heat the higher problem of the finishing slag content such as length. Accordingly, it would be desirable to further the composite fluxing medium constituent of steel-making is optimized, to improve serviceability.
Summary of the invention
It is desirable to provide a kind of liquid steel refining slag former and production technology thereof.
The present invention provides following technical scheme:
A kind of liquid steel refining slag former, it is made up of following components in percentage by weight: aluminium oxide 25-38%, silicon dioxide 25-32%, manganese oxide 8-15%, the oxide 15-20% of ferrum, calcium oxide 10-18%, calcium fluoride 3-9%, titanium dioxide 5-8%, magnesium oxide 6-15%, sulfur��0.06%, all the other are impurity.
A kind of liquid steel refining slag former and production technology thereof, comprise the following steps:
(1) by pulverizer, raw material is broken into the granule that granularity is 5-30mm, heats and be baked to moisture less than 0.5%;
(2) the sieve aperture net of granule 120-450um above-mentioned steps (1) obtained sieves, and takes the part manual stirring mixing under shining;
(3) mixed granule in step (2) entering a heatable brick bed dry, drying temperature is 160 �� 20 DEG C, and drying time is 5 hours;
(4) granule packaging after drying enters moisture barrier bag sealing bag to get product.
The oxide of described ferrum is ferrous oxide and ferrum oxide.
In step (4), the granularity of the logical molten steel slag former prepared is 10-50mm.
Compared with prior art, the invention has the beneficial effects as follows: the slag former that the present invention obtains, the problem that slagging speed is slow, dephosphorization rate is low existed in steelmaking process can not only be overcome, and solid melts and infusibility melting point substance can be reduced, effectively shorten initial stage slag and form the time, improve converter terminal liquid steel dephosphorization rate;Slag former of the present invention has the advantages that cost is low, reduce slag melting, it is possible to play energy-saving and cost-reducing, to reduce cost remarkable result.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
1 one kinds of liquid steel refining slag formers of embodiment, it is made up of following components in percentage by weight: aluminium oxide 25%, silicon dioxide 25%, manganese oxide 8%, the oxide 15% of ferrum, calcium oxide 10%, calcium fluoride 3%, titanium dioxide 5%, magnesium oxide 6%, sulfur��0.06%, all the other are impurity.
A kind of liquid steel refining slag former and production technology thereof, comprise the following steps:
(1) by pulverizer, raw material is broken into the granule that granularity is 5-30mm, heats and be baked to moisture less than 0.5%;
(2) the sieve aperture net of granule 120-450um above-mentioned steps (1) obtained sieves, and takes the part manual stirring mixing under shining;
(3) mixed granule in step (2) entering a heatable brick bed dry, drying temperature is 160 �� 20 DEG C, and drying time is 5 hours;
(4) granule packaging after drying enters moisture barrier bag sealing bag to get product.
The oxide of described ferrum is ferrous oxide and ferrum oxide.
In step (4), the granularity of the logical molten steel slag former prepared is 10-50mm.
2 one kinds of liquid steel refining slag formers of embodiment, it is made up of following components in percentage by weight: aluminium oxide 38%, silicon dioxide 32%, manganese oxide 15%, the oxide 20% of ferrum, calcium oxide 18%, calcium fluoride 9%, titanium dioxide 8%, magnesium oxide 15%, sulfur��0.06%, all the other are impurity.
A kind of liquid steel refining slag former and production technology thereof, comprise the following steps:
(1) by pulverizer, raw material is broken into the granule that granularity is 5-30mm, heats and be baked to moisture less than 0.5%;
(2) the sieve aperture net of granule 120-450um above-mentioned steps (1) obtained sieves, and takes the part manual stirring mixing under shining;
(3) mixed granule in step (2) entering a heatable brick bed dry, drying temperature is 160 �� 20 DEG C, and drying time is 5 hours;
(4) granule packaging after drying enters moisture barrier bag sealing bag to get product.
The oxide of described ferrum is ferrous oxide and ferrum oxide.
In step (4), the granularity of the logical molten steel slag former prepared is 10-50mm.
3 one kinds of liquid steel refining slag formers of embodiment, it is made up of following components in percentage by weight: aluminium oxide 30%, silicon dioxide 28%, manganese oxide 12%, the oxide 18% of ferrum, calcium oxide 15%, calcium fluoride 6%, titanium dioxide 6%, magnesium oxide 12%, sulfur��0.06%, all the other are impurity.
A kind of liquid steel refining slag former and production technology thereof, comprise the following steps:
(1) by pulverizer, raw material is broken into the granule that granularity is 5-30mm, heats and be baked to moisture less than 0.5%;
(2) the sieve aperture net of granule 120-450um above-mentioned steps (1) obtained sieves, and takes the part manual stirring mixing under shining;
(3) mixed granule in step (2) entering a heatable brick bed dry, drying temperature is 160 �� 20 DEG C, and drying time is 5 hours;
(4) granule packaging after drying enters moisture barrier bag sealing bag to get product.
The oxide of described ferrum is ferrous oxide and ferrum oxide.
In step (4), the granularity of the logical molten steel slag former prepared is 10-50mm.
It is obvious to a person skilled in the art that the invention is not restricted to the details of described one exemplary embodiment, and when without departing substantially from the spirit of the present invention or basic feature, it is possible to realize the present invention in other specific forms. Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the invention rather than described explanation limits, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in the present invention. In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
Claims (4)
1. a liquid steel refining slag former, it is characterized in that, it is made up of following components in percentage by weight: aluminium oxide 25-38%, silicon dioxide 25-32%, manganese oxide 8-15%, the oxide 15-20% of ferrum, calcium oxide 10-18%, calcium fluoride 3-9%, titanium dioxide 5-8%, magnesium oxide 6-15%, sulfur��0.06%, all the other are impurity.
2. a kind of liquid steel refining slag former according to claim 1 and production technology thereof, it is characterised in that comprise the following steps:
(1) by pulverizer, raw material is broken into the granule that granularity is 5-30mm, heats and be baked to moisture less than 0.5%;
(2) the sieve aperture net of granule 120-450um above-mentioned steps (1) obtained sieves, and takes the part manual stirring mixing under shining;
(3) mixed granule in step (2) entering a heatable brick bed dry, drying temperature is 160 �� 20 DEG C, and drying time is 5 hours;
(4) granule packaging after drying enters moisture barrier bag sealing bag to get product.
3. a kind of liquid steel refining slag former according to claim 1 and 2 and production technology thereof, it is characterised in that: the oxide of described ferrum is ferrous oxide and ferrum oxide.
4. a kind of liquid steel refining slag former according to claim 1 and 2 and production technology thereof, it is characterised in that: the granularity of the molten steel slag former prepared in described step (4) is 10-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610108785.3A CN105648149A (en) | 2016-02-26 | 2016-02-26 | Molten steel refining slag forming agent and manufacturing process thereof |
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| CN201610108785.3A CN105648149A (en) | 2016-02-26 | 2016-02-26 | Molten steel refining slag forming agent and manufacturing process thereof |
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| CN105648149A true CN105648149A (en) | 2016-06-08 |
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| CN201610108785.3A Pending CN105648149A (en) | 2016-02-26 | 2016-02-26 | Molten steel refining slag forming agent and manufacturing process thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103272A (en) * | 2017-12-30 | 2018-06-01 | 汪逸凡 | A kind of method that steelmaking slag agent is prepared using waste rubber rubber powder |
| CN108251599A (en) * | 2018-02-09 | 2018-07-06 | 天津荣程联合钢铁集团有限公司 | The preparation method of abrading-ball Steel material slag former and abrading-ball Steel material |
| CN108315528A (en) * | 2018-02-09 | 2018-07-24 | 天津荣程联合钢铁集团有限公司 | Carbon constructional quality steel slag former and preparation method thereof |
| CN108384922A (en) * | 2018-02-09 | 2018-08-10 | 天津荣程联合钢铁集团有限公司 | The smelting process of carbon constructional quality steel |
Citations (6)
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| GB1258102A (en) * | 1968-03-30 | 1971-12-22 | ||
| CN1032553A (en) * | 1987-10-13 | 1989-04-26 | 沃斯特-阿尔派因钢铁多纳维茨有限公司 | Continuous steelmaking process |
| CN101045949A (en) * | 2007-04-13 | 2007-10-03 | 郎雪 | No-fluorine composite slag melting agent for converter steelmaking and its production process |
| CN101660018A (en) * | 2009-09-17 | 2010-03-03 | 陆建荣 | Compound slagging agent of converter and preparation method and applications thereof |
| CN101935741A (en) * | 2010-07-21 | 2011-01-05 | 申林 | Fluorine-free efficient compound scorification and slagging furnace burden |
| CN101993980A (en) * | 2010-11-26 | 2011-03-30 | 首钢总公司 | Method for smelting ultralow-phosphorous steel |
-
2016
- 2016-02-26 CN CN201610108785.3A patent/CN105648149A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1258102A (en) * | 1968-03-30 | 1971-12-22 | ||
| CN1032553A (en) * | 1987-10-13 | 1989-04-26 | 沃斯特-阿尔派因钢铁多纳维茨有限公司 | Continuous steelmaking process |
| CN101045949A (en) * | 2007-04-13 | 2007-10-03 | 郎雪 | No-fluorine composite slag melting agent for converter steelmaking and its production process |
| CN101660018A (en) * | 2009-09-17 | 2010-03-03 | 陆建荣 | Compound slagging agent of converter and preparation method and applications thereof |
| CN101935741A (en) * | 2010-07-21 | 2011-01-05 | 申林 | Fluorine-free efficient compound scorification and slagging furnace burden |
| CN101993980A (en) * | 2010-11-26 | 2011-03-30 | 首钢总公司 | Method for smelting ultralow-phosphorous steel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103272A (en) * | 2017-12-30 | 2018-06-01 | 汪逸凡 | A kind of method that steelmaking slag agent is prepared using waste rubber rubber powder |
| CN108251599A (en) * | 2018-02-09 | 2018-07-06 | 天津荣程联合钢铁集团有限公司 | The preparation method of abrading-ball Steel material slag former and abrading-ball Steel material |
| CN108315528A (en) * | 2018-02-09 | 2018-07-24 | 天津荣程联合钢铁集团有限公司 | Carbon constructional quality steel slag former and preparation method thereof |
| CN108384922A (en) * | 2018-02-09 | 2018-08-10 | 天津荣程联合钢铁集团有限公司 | The smelting process of carbon constructional quality steel |
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Application publication date: 20160608 |
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