CN2734768Y - Inactivate granular magnesium - Google Patents
Inactivate granular magnesium Download PDFInfo
- Publication number
- CN2734768Y CN2734768Y CN 200420118467 CN200420118467U CN2734768Y CN 2734768 Y CN2734768 Y CN 2734768Y CN 200420118467 CN200420118467 CN 200420118467 CN 200420118467 U CN200420118467 U CN 200420118467U CN 2734768 Y CN2734768 Y CN 2734768Y
- Authority
- CN
- China
- Prior art keywords
- magnesium
- granular magnesium
- inactivate
- inactivate granular
- grain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 50
- 239000011777 magnesium Substances 0.000 title claims abstract description 50
- 238000002161 passivation Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 229910001141 Ductile iron Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000003009 desulfurizing effect Effects 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 235000003599 food sweetener Nutrition 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000003765 sweetening agent Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 150000002505 iron Chemical class 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- -1 magnesium nitride Chemical class 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The utility model relates to an inactivate granular magnesium, comprising a center granular magnesium and the surface inactivate layer of the granular magnesium. The granular magnesium is in the center of the inactivate granular magnesium, and the surface inactivate layer is fixedly covered on the surface of the granular magnesium, which forms the inactivate granular magnesium with definite shape and granule size. The inactivate granular magnesium is applied on smelting iron and steel as the desulfurizing agent, which has the advantages of low integrated cost, high efficiency, and fast reaction rate; the inactivate granular magnesium can also be applied as the nodulizer agent of the nodular cast iron, the two procedures of desulfuration and balling are integrated, which reduces the cost, and improves the product quality. The inactivate granular magnesium of the utility model is suitable for large steel mills and manufacturing enterprises of the balling iron casting.
Description
Technical field
The utility model relates to the MAGNESIUM METAL sweetening agent in the iron class alloy desulfurization treatment technology and nodular cast iron balls micronizing technology under the molten state, be specifically related to a kind of Inactivate granular magnesium, belong to International Classification of Patents C21C7/064 " processing of fusion iron class alloy---dephosphorization, desulfurization " technical field.
Background technology
Current, Iron And Steel Industry is progressively being applied the new technology of MAGNESIUM METAL as sweetening agent, to replace or the original calcium oxide that generally adopts of improvement and the old technology of carbide of calcium desulfurization.Because the chemical property of magnesium is extremely active, the burning-point of magnesium grain reduces and reduces significantly with its granularity.For example granularity is the magnesium grain of 0.1-1.0, meets naked light at normal temperatures and promptly burns, and sends dazzling incandescence.If directly join in the about 1300 ℃ molten iron of desulfurization temperature, do not reach the purpose of desulfurization, and be absolutely unsafe with the magnesium grain.In order to use the desulfurization of magnesium grain safely, must carry out Passivation Treatment to the magnesium grain.The like product that obtains at present the national patent mandate at home has two families: first ZL98114243.5 " production method of metal magnesium particles of coated layer ", it is characterized in that used magnesium raw material is the magnesium that silicothermic process is produced, is to adopt molten magnesium to make through atomizing under the winding-up of high pressure nitrogen.The fusing point of magnesium is 650 ℃, in melting process, must add the general flux of magnesium-smelting silicothermic process, and this solvent forms coating on magnesium grain surface.This method is when jetting with nitrogen, and magnesium grain surface generates magnesium nitride with the nitrogen reaction.Activated carbon is caused damage, become a kind of waste of resource, increased the cost of product.When steel mill used, the flue gas that has muriate and fluorochemical to generate caused environmental pollution.It two is ZL99213501.X, it is characterized in that layer compound passivation, and promptly particle magnesium occupy the center, its outer anti-oxidant fire retardant of skim that coats, and skin is the epidermis material again.The epidermis material is boron oxide or calcium oxide, and granularity is between the 18-60 order.This passivation layer uses boron, is composite structure, and cost is higher, and size range is narrower, between 0.25mm-1.0mm, can not adapt to the diversified demand of Iron And Steel Industry.
Summary of the invention
The purpose of this utility model is to provide a kind of surface at the magnesium grain directly to coat the passivation raw material, and is safe and reliable, free from environmental pollution, do not damage activated carbon, production cost is relatively low, the Mg-base desulfurizing agent of size range between 0.1mm-1.8mm---Inactivate granular magnesium.
The technical solution of the utility model is as follows.
A kind of Inactivate granular magnesium by the outer one deck passivating material that firmly coats of magnesium grain, constitutes the one-piece construction of Inactivate granular magnesium.Promptly be made up of the passivation layer (2) on magnesium grain (1) and surface thereof, magnesium grain (1) occupy the center, and it is coated with the layer of passivation material of being made up of magnesium oxide or alumina material (2), and passivation layer (2) firmly is wrapped in outside the magnesium grain (1) by the high-temperature cement binding agent.
Described magnesium grain (1) is the metal magnesium powder of granularity between 0.1-1.8mm.
The finished product face shaping of the utility model Inactivate granular magnesium is sphere or multiple edge body, and color and luster is canescence, grey or beige.As the sweetening agent of iron alloy under the molten state, it is low to have a desulfurization comprehensive cost, efficient height, characteristics such as speed of response is fast, and the treatment time is short, and hot metal temperature drop is little, and the quantity of slag is few.As the nodulizing agent of spheroidal graphite cast iron, desulfurization and nodularization two procedures can be merged into a procedure, reduced the nodularization cost, improved quality of castings.
Description of drawings
Fig. 1 is a kind of embodiment form of the present utility model: the sectional view of the multiple edge body Inactivate granular magnesium of amplification;
Fig. 2 is the schematic appearance of Fig. 1, i.e. the multiple edge body front view;
Fig. 3 is an another kind of embodiment form of the present utility model: the sectional view of the spherical Inactivate granular magnesium of amplification;
Fig. 4 is the schematic appearance of Fig. 3, i.e. the spheroid front view.
Among the figure: 1, magnesium grain, 2, layer of passivation material.
Embodiment
Shown in Fig. 1-4, be raw material with the metal magnesium ingot, on specific equipment, make magnesium grain 1, its outer layer of passivation material 2 of mediating one deck magnesium oxide or aluminum oxide by special high-temperature cement binding agent.Under 100-120 ℃ of condition, dry, promptly obtain finished product after the cooling.It is shaped as the multiple edge body shown in Fig. 1,2, or the spheroplast shown in Fig. 3,4.
The key technical indexes of finished product should reach following requirement:
A, chemical ingredients (weight percent):
Activated carbon content 90-98%
Passivating material 0.95-8.95%
Moisture content is not more than 0.05%
Other (comprises that the raw material magnesium ingot is interior former impure, is not more than) 1%
B, burning-point: be not less than 560 ℃
C, high temperature flame-proof time: condition is not less than 15 seconds for following 1000 ℃
D, product granularity: 0.1-1.8mm
E, loose density: 0.8-1.1g/cm
Claims (2)
1, a kind of Inactivate granular magnesium, passivation layer (2) by magnesium grain (1) and surface thereof is formed, it is characterized in that: magnesium grain (1) occupy the center, it is coated with the layer of passivation material of being made up of magnesium oxide or alumina material (2), and passivation layer (2) firmly is wrapped in outside the magnesium grain (1) by the high-temperature cement binding agent.
2, Inactivate granular magnesium according to claim 1 is characterized in that: described magnesium grain (1) is the metal magnesium powder of granularity between 0.1-1.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118467 CN2734768Y (en) | 2004-10-19 | 2004-10-19 | Inactivate granular magnesium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118467 CN2734768Y (en) | 2004-10-19 | 2004-10-19 | Inactivate granular magnesium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2734768Y true CN2734768Y (en) | 2005-10-19 |
Family
ID=35264650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420118467 Expired - Fee Related CN2734768Y (en) | 2004-10-19 | 2004-10-19 | Inactivate granular magnesium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2734768Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009146573A1 (en) * | 2008-06-02 | 2009-12-10 | 鞍钢股份有限公司 | A composite ball used to precisely control the quantity of the trace element dissolved in the molten steel and the method of producing the composite ball |
| CN108842109A (en) * | 2018-09-25 | 2018-11-20 | 山东国铭球墨铸管科技有限公司 | A kind of nodulizing process of passivated magnesium blowing process spheroidal graphite cast-iron |
| CN112981044A (en) * | 2021-02-09 | 2021-06-18 | 鞍钢股份有限公司 | High-efficiency desulfurizer and preparation and use methods thereof |
-
2004
- 2004-10-19 CN CN 200420118467 patent/CN2734768Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009146573A1 (en) * | 2008-06-02 | 2009-12-10 | 鞍钢股份有限公司 | A composite ball used to precisely control the quantity of the trace element dissolved in the molten steel and the method of producing the composite ball |
| CN108842109A (en) * | 2018-09-25 | 2018-11-20 | 山东国铭球墨铸管科技有限公司 | A kind of nodulizing process of passivated magnesium blowing process spheroidal graphite cast-iron |
| CN112981044A (en) * | 2021-02-09 | 2021-06-18 | 鞍钢股份有限公司 | High-efficiency desulfurizer and preparation and use methods thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051019 Termination date: 20101019 |