CN203112864U - BJ molten steel cleaning agent - Google Patents
BJ molten steel cleaning agent Download PDFInfo
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- CN203112864U CN203112864U CN 201320111005 CN201320111005U CN203112864U CN 203112864 U CN203112864 U CN 203112864U CN 201320111005 CN201320111005 CN 201320111005 CN 201320111005 U CN201320111005 U CN 201320111005U CN 203112864 U CN203112864 U CN 203112864U
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- molten steel
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Abstract
The utility model discloses a BJ molten steel cleaning agent, which comprises a steel belt cladding layer and a core. The core is a metal calcium wire of which the calcium content is more than 99%. The steel belt cladding layer wraps the core. A thermal-protective coating is arranged between the steel belt cladding layer and the core. The thermal-protective cladding is heat-resisting fiber paper. The steel belt is a 08AL type steel belt. The core is an element which is made of electrolytic calcium materials. The wire diameter of the core is 7.5+/-0.05mm. The thickness of the steel belt cladding layer is 0.6+/-0.05mm. With the adoption of the cleaning agent, the purity of molten steel can be improved, and the blockage of a continuous casting steel port is reduced or avoided, so the yield is greatly improved, the steelmaking cost is effectively reduced, and energy-saving and environment-friendly effects are achieved. Under the condition of poor current situation of steel plants, a common powder cored wire is replaced by the BJ molten steel cleaning agent, the smelting cost is further reduced, the calcium yield is improved, the BJ molten steel cleaning agent plays a certain positive improving role, the operation strength is also reduced, and the market prospect is extensive.
Description
Technical field
The utility model relates to the metallurgic auxiliary materials technical field, relates in particular to the agent of a kind of BJ purification of molten steel.
Background technology
Improving the key of steel performance and quality, is the purity that improves steel, reduces in the steel foreign matter content to greatest extent and the composition form of impurity is controlled.Furnace outer refining technology is important step and the means that present countries in the world Iron And Steel Industry improves steel quality.Wherein wire-feeding technique is accepted by increasing manufacturer.But domestic common pulvis calcium is that cored-wire exists many defectives at present: 1, the iron powder in the Yin Putong pulvis ferro-calcium core-spun yarn (7.4 g/cm3) is excessive with calcium grain (1.54g/cm3) proportion great disparity, and unshapeliness can't be avoided; 2, because the inclusion in the common ferro-calcium core-spun yarn can't accurately be controlled, the unshapeliness of itself in addition, the recovery rate of calcium can not reach accurately and be stable; 3, the instability of the silicocalcium in the silicocalcium cored-wire and existence are mingled with and the oxidation composition, so the recovery rate shakiness of calcium still exists.Application number: 201120511388.3 utility model discloses a kind of steel-making with the real core spun yarn of pure calcium, comprise steel band coating layer and core body, core body is calcium contents greater than 97% calcium metal silk, and the dual-side of steel band coating layer axially coats it superimposed crimping that rolls in back along core body.The thickness of steel band coating layer is 0.5-0.55mm, and the cross section diameter of core body is 7-7.5mm, the width L=3mm of crimping.There are the following problems in the above technical scheme: 1, the calcium metal silk is for going back protocalcium, and purity is lower, can bring impurity in the molten steel into, is unfavorable for the pure of molten steel; 2, the degree of depth that enters in the molten steel after the molten steel line feeding is not enough, and the gasification volatilization is serious, and yield of alloy is low, and metallurgical material can not take full advantage of; 3, the alloy silk enters the preceding oxidation easily of molten steel, and calcium silk outside surface generates cao layers, has stoped the reaction of calcium in molten steel; 4, feed the molten steel reflection of silk back acutely, molten steel inclusion floating speed is slow, the molten steel purifying effect is bad.
The utility model content
The utility model provides a kind of can improve the pure degree of molten steel, reduces production cost, guarantees to produce to carry out the BJ purification of molten steel agent of energy-conserving and environment-protective smoothly.
Realize that the technical scheme that above-mentioned purpose is taked is: the agent of a kind of BJ purification of molten steel, comprise steel band coating layer and core body, described core body is calcium contents greater than 99% calcium metal silk, described steel band coating layer parcel core body.
Between described steel band coating layer and the core body thermofin is set.
Described thermofin is heat-resistant fibrous paper.
Described steel band is the 08AL type.
Described core body is electrolysis calcium material product.
The line of described core body directly is 7.5 ± 0.05mm.
Described steel band coating thickness is 0.6 ± 0.05mm.
The beneficial effects of the utility model are: 1. the purity height of calcium in the core body, do not contain harmful trace element substantially, and can in molten steel, not bring other pollutents into; 2, thermofin is set between steel band coating layer and the core body can guarantees that not only cored-wire can be by the oxidation of the institute of the high temperature outside the ladle before not entering molten steel, cored-wire is reached below the critical depth of calcium, thereby before forming calcium steam, just react with molten steel, make the recovery rate of calcium improve more than 50%, cored-wire gos deep into ladle bottom simultaneously, thereby be conducive to calcium abundant diffusion in molten steel and make the molten steel reacting balance, evenly, inclusion floating speed is fast, can crystal grain thinning, yield of alloy significantly rises, improve the metallurgical material rate of utilization, molten steel surface reaction simultaneously is inviolent, do not splash, reduced airborne oxygen is brought into chance in the molten steel; 3, because the line of described core body directly is 7.5 ± 0.05mm, described steel band coating thickness is 0.6 ± 0.05mm, the cored-wire overall wire directly reaches 9 ± 0.5mm, and steel band has increased the intensity of cored-wire, under the prerequisite of the usage quantity that as far as possible reduces calcium, guarantee that cored-wire has bigger diameter, thereby make cored-wire be difficult for broken string, the not flexible discounting of cored-wire, vary in diameter is little, thereby make and the utlity model has tensile strength height, good toughness, be difficult for advantages such as broken string, be more conducive to the line feeding amount accurately control; 4, core body is fine and close and parcel is tight, can store the longer time also can guarantee result of use.The utility model is realized the darker molten steel feeding degree of depth under lower wire-feeding velocity, calcium is not easy the gasification volatilization, and the line feeding amount is accurately control easily, the line feeding process stabilization; Can improve the molten steel purity, reduce and eliminate the nozzle clogging of continuous casting steel, recovery rate is significantly improved, can effectively reduce steel-making cost, energy-conserving and environment-protective, look forward under the bad situation of situation at current steel, use the agent of BJ purification of molten steel to replace common pulvis cored-wire can further reduce smelting cost, improve the calcium recovery rate, play certain effect of actively promoting, can also reduce operation intensity, market outlook are wide.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the agent of a kind of BJ purification of molten steel, comprise steel band coating layer 1 and core body 2, described core body 2 is calcium contents greater than 99% calcium metal silk, the calcium metal silk is squeezed into calcium metal silk (the silvery white metal that diameter is 7.5mm by Ca content greater than 99% pure electrolysis calcium ingot, softer, be ductile, 839 ℃ of fusing points, 1484 ℃ of boiling points, relative density 1.54kg/cm3, chemical property is very active, having very strong activity degree, is the reductive agent of using always, and described steel band coating layer 1 is by special cored-wire unit parcel core body.Between described steel band coating layer 1 and the core body 2 thermofin 3 is set.Described thermofin 3 is heat-resistant fibrous paper.Described steel band is the 08AL type.The described core body of described core body is electrolysis calcium material product.The line of described core body directly is 7.5 ± 0.05mm.Described steel band coating thickness is 0.6 ± 0.05mm.
Technical indicator of the present invention is:
The beneficial effects of the utility model are: 1. the purity height of calcium in the core body, substantially do not contain harmful trace element, can in molten steel, not bring other pollutents 2 into, thermofin is set between steel band coating layer and the core body can guarantees that not only cored-wire can be by the oxidation of the institute of the high temperature outside the ladle before not entering molten steel, cored-wire is reached below the critical depth of calcium, thereby before forming calcium steam, just react with molten steel, make the recovery rate of calcium improve more than 50%, cored-wire gos deep into ladle bottom simultaneously, thereby be conducive to calcium abundant diffusion in molten steel and make the molten steel reacting balance, evenly, inclusion floating speed is fast, can crystal grain thinning, yield of alloy significantly rises, and improves the metallurgical material rate of utilization, and molten steel surface reaction simultaneously is inviolent, do not splash, reduced airborne oxygen is brought into chance in the molten steel; 3, because the line of described core body directly is 7.5 ± 0.05mm, described steel band coating thickness is 0.6 ± 0.05mm, the cored-wire overall wire directly reaches 9 ± 0.5mm, and steel band has increased the intensity of cored-wire, under the prerequisite of the usage quantity that as far as possible reduces calcium, guarantee that cored-wire has bigger diameter, thereby make cored-wire be difficult for broken string, the not flexible discounting of cored-wire, vary in diameter is little, thereby make and the utlity model has tensile strength height, good toughness, be difficult for advantages such as broken string, be more conducive to the line feeding amount accurately control; 4, core body is fine and close and parcel is tight, can store the longer time also can guarantee result of use.The utility model is realized the darker molten steel feeding degree of depth under lower wire-feeding velocity, calcium is not easy the gasification volatilization, and the line feeding amount is accurately control easily, the line feeding process stabilization; Can improve the molten steel purity, reduce and eliminate the nozzle clogging of continuous casting steel, recovery rate is significantly improved, can effectively reduce steel-making cost, energy-conserving and environment-protective, look forward under the bad situation of situation at current steel, use the agent of BJ purification of molten steel to replace common pulvis cored-wire can further reduce smelting cost, improve the calcium recovery rate, play certain effect of actively promoting, can also reduce operation intensity, market outlook are wide.
The figure of above-mentioned expression, explanation; only be embodiment of the present utility model; be not to be that protection domain of the present utility model is limited, all equivalent variations or modifications of doing according to the utility model claim are the utility model claim and contain.
Claims (7)
1. BJ purification of molten steel agent comprises steel band coating layer and core body, it is characterized in that: described core body is calcium contents greater than 99% calcium metal silk, described steel band coating layer parcel core body.
2. BJ purification of molten steel as claimed in claim 1 agent is characterized in that: described steel band is the 08AL type.
3. BJ purification of molten steel as claimed in claim 1 agent is characterized in that: described core body is electrolysis calcium material product.
4. BJ purification of molten steel as claimed in claim 1 agent is characterized in that: the line of described core body directly is 7.5 ± 0.05mm.
5. BJ purification of molten steel as claimed in claim 1 agent is characterized in that: described steel band coating thickness is 0.6 ± 0.05mm.
6. BJ purification of molten steel as claimed in claim 1 agent is characterized in that: between described steel band coating layer and the core body thermofin is set.
7. BJ purification of molten steel as claimed in claim 6 agent is characterized in that: described thermofin is heat-resistant fibrous paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320111005 CN203112864U (en) | 2013-03-12 | 2013-03-12 | BJ molten steel cleaning agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320111005 CN203112864U (en) | 2013-03-12 | 2013-03-12 | BJ molten steel cleaning agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203112864U true CN203112864U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320111005 Expired - Lifetime CN203112864U (en) | 2013-03-12 | 2013-03-12 | BJ molten steel cleaning agent |
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| Country | Link |
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| CN (1) | CN203112864U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122404A (en) * | 2013-03-12 | 2013-05-29 | 河南省西保冶材集团有限公司 | BJ molten steel cleaning agent |
| CN106521084A (en) * | 2016-11-18 | 2017-03-22 | 浙江宝信新型炉料科技发展有限公司 | Rare earth magnesium alloy cored wire containing multiple elements |
| CN106702081A (en) * | 2016-11-18 | 2017-05-24 | 浙江宝信新型炉料科技发展有限公司 | High-magnesium rare earth magnesium alloy powder core spun yarn containing multiple elements |
-
2013
- 2013-03-12 CN CN 201320111005 patent/CN203112864U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122404A (en) * | 2013-03-12 | 2013-05-29 | 河南省西保冶材集团有限公司 | BJ molten steel cleaning agent |
| CN106521084A (en) * | 2016-11-18 | 2017-03-22 | 浙江宝信新型炉料科技发展有限公司 | Rare earth magnesium alloy cored wire containing multiple elements |
| CN106702081A (en) * | 2016-11-18 | 2017-05-24 | 浙江宝信新型炉料科技发展有限公司 | High-magnesium rare earth magnesium alloy powder core spun yarn containing multiple elements |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181130 Address after: 474500 Xibao Industrial Park, Xixia County, Nanyang City, Henan Province (South Extension of Guanhe Road) Co-patentee after: Xixia Shenlong Metallurgical Furnace Material Co.,Ltd. Patentee after: Henan Xibao Metallurgy Materials Group Co.,Ltd. Address before: 474500 Guanhe Road 412, Xixia County, Nanyang City, Henan Province Patentee before: Henan Xibao Metallurgy Materials Group Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |