CN112458302A - RH vacuum refining method capable of improving antimony element yield - Google Patents
RH vacuum refining method capable of improving antimony element yield Download PDFInfo
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- CN112458302A CN112458302A CN202011180661.9A CN202011180661A CN112458302A CN 112458302 A CN112458302 A CN 112458302A CN 202011180661 A CN202011180661 A CN 202011180661A CN 112458302 A CN112458302 A CN 112458302A
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- antimony
- molten steel
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- 238000000034 method Methods 0.000 title claims abstract description 25
- FAWGZAFXDJGWBB-UHFFFAOYSA-N antimony(3+) Chemical compound [Sb+3] FAWGZAFXDJGWBB-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000007670 refining Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
- 239000010959 steel Substances 0.000 claims abstract description 46
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 30
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000005261 decarburization Methods 0.000 claims abstract description 19
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- 238000005292 vacuum distillation Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004073 vulcanization Methods 0.000 claims abstract description 7
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 239000007800 oxidant agent Substances 0.000 claims description 17
- 230000001590 oxidative effect Effects 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 7
- 230000003009 desulfurizing effect Effects 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000006477 desulfuration reaction Methods 0.000 abstract description 3
- 230000023556 desulfurization Effects 0.000 abstract description 3
- 230000001174 ascending effect Effects 0.000 abstract 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001245 Sb alloy Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229940058905 antimony compound for treatment of leishmaniasis and trypanosomiasis Drugs 0.000 description 2
- 150000001463 antimony compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052959 stibnite Inorganic materials 0.000 description 2
- IHBMMJGTJFPEQY-UHFFFAOYSA-N sulfanylidene(sulfanylidenestibanylsulfanyl)stibane Chemical compound S=[Sb]S[Sb]=S IHBMMJGTJFPEQY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- SYKNUAWMBRIEKB-UHFFFAOYSA-N [Cl].[Br] Chemical compound [Cl].[Br] SYKNUAWMBRIEKB-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002140 antimony alloy Substances 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical group 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
-
- 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
- C21C7/06—Deoxidising, e.g. killing
-
- 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
-
- 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
- C21C7/068—Decarburising
-
- 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
- C21C7/10—Handling in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
-
- 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
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses an RH vacuum refining method capable of improving the yield of antimony, which comprises the following specific steps: centralizing the steel ladle, driving the steel ladle to lift by using a winch, hoisting the steel ladle into an RH vacuum cavity by using the winch, vacuumizing air in the vacuum cavity, placing molten steel in the vacuum cavity, stirring the molten steel in the vacuum cavity by using a driving device, continuously vacuumizing in the stirring process, continuously blowing argon into the vacuum cavity by using the ascending of a stain pipe so as to keep the fluidity of the molten steel, and then carrying out vacuum distillation, decarburization, oxidation and vulcanization. The invention greatly improves the yield of the antimony element in the crude antimony by carrying out vacuum distillation, decarburization, oxidation and desulfurization treatment on the crude antimony, ensures the content and quality of the antimony element and further meets the use requirement of the industrial process.
Description
Technical Field
The invention relates to the technical field of industrial element extraction, in particular to an RH vacuum refining method capable of improving the yield of antimony element.
Background
Antimony metal element, element symbol Sb, atomic number 51. It is a metalloid with metallic luster, and is mainly present in sulfide mineral stibnite (Sb 2S 3) in nature. Antimony compounds have been known for use as cosmetics in ancient times, and metallic antimony has been described in ancient times, but was mistaken for lead at that time. Antimony is known to be a chemical element at about 17 th century. Silvery white, shiny, hard and brittle metals (often made in various shapes such as bars, blocks, powders, etc.). Has a flaky crystal structure. Gradually lose luster in moist air, and burn to white antimony oxide under strong heat. Is easily dissolved in aqua regia and concentrated sulfuric acid. The relative density is 6.68, the melting point is 630 ℃, the boiling point is 1635 ℃, the atomic radius is 1.28A, and the electronegativity is 2.2. Since the end of the 20 th century, china has become the world's largest country of antimony and its compounds, most of which are produced in the tin mine in the city of the cold water river, Hunan province. The industrial production of antimony is first roasting and then reducing with carbon at high temperature, or by direct reduction of stibnite with metallic iron. Lead-antimony alloy sheet for use in lead-acid batteries. Alloys of antimony with lead and tin can be used to improve the performance of solder materials, bullets and bearings. Antimony compounds are important additives for chlorine-and bromine-containing flame retardants with a wide range of applications, and antimony also has its wide range of applications in emerging microelectronic technologies, such as AMD video card manufacturing.
The existing antimony element has poor production and purification effects and low yield, and cannot meet the use requirements in industrial processes. Therefore, the invention provides an RH vacuum refining method capable of improving the yield of antimony element so as to solve the problems.
Disclosure of Invention
The invention aims to provide an RH vacuum refining method capable of improving the yield of antimony element so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an RH vacuum refining method capable of improving the yield of antimony element comprises the following specific steps:
(1) centralizing the steel ladles, driving the steel ladles to lift by using a winch, hoisting the steel ladles into an RH vacuum cavity by using the winch, vacuumizing air in the vacuum cavity, placing molten steel in the vacuum cavity, stirring the molten steel in the vacuum cavity by using a driving device, continuously vacuumizing in the stirring process, continuously blowing argon into the vacuum cavity by using the lifting of a stain pipe so as to keep the fluidity of the molten steel, and then carrying out vacuum distillation, decarburization, oxidation and vulcanization;
(2) the vacuum distillation operation for improving the yield of the antimony element comprises the following specific operations: performing preliminary vacuum distillation operation on crude antimony by adopting an electrothermal vacuum furnace, wherein the residual pressure is 133.3Pa, and the temperature is lower than the boiling point of antimony by hundreds of degrees;
(3) the decarburization operation for improving the yield of the antimony element is specifically as follows: starting decarburization operation in the vacuum chamber, wherein the time required in the decarburization process is 10-15min, and during the period, continuously extracting vacuum in the RH vacuum chamber to accelerate the decarburization efficiency;
(4) the oxidation operation for improving the yield of the antimony element comprises the following specific operations: after the molten steel is decarburized, putting a deoxidizing agent into the molten steel, penetrating a stain pipe into the bottom of the molten steel, continuously inputting an oxidant I into the molten steel, and then continuously inputting an oxidant II to promote oxidation of crude antimony;
(5) the vulcanization operation for improving the yield of the antimony element comprises the following specific operations: according to the required amount of the desulfurizer, the molten steel and the desulfurizer are fully mixed and stirred by a stirring device.
As a further scheme of the invention: the temperature lower than the antimony boiling point by hundreds in the step (2) is 500-530 ℃.
As a still further scheme of the invention: and (4) inputting the first oxidant for 3min and inputting the second oxidant for 5 min.
As a still further scheme of the invention: the first oxidant and the second oxidant can be fluorine gas and potassium permanganate.
As a still further scheme of the invention: the desulfurizing agent can be limestone and gypsum.
As a still further scheme of the invention: the ratio of the desulfurizing agent to the molten steel in the step (5) is 1:500 g.
As a still further scheme of the invention: the desulfurizer needs to be smashed firstly and is uniformly sprayed in the molten steel by a spraying device.
Compared with the prior art, the invention has the beneficial effects that: the invention greatly improves the yield of the antimony element in the crude antimony by carrying out vacuum distillation, decarburization, oxidation and desulfurization treatment on the crude antimony, ensures the content and quality of the antimony element and further meets the use requirement of the industrial process.
Drawings
FIG. 1 is a schematic view of a process structure of an RH vacuum refining method capable of improving the yield of antimony.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the embodiment of the present invention, an RH vacuum refining method capable of increasing antimony yield includes the following specific steps:
(1) centralizing the steel ladles, driving the steel ladles to lift by using a winch, hoisting the steel ladles into an RH vacuum cavity by using the winch, vacuumizing air in the vacuum cavity, placing molten steel in the vacuum cavity, stirring the molten steel in the vacuum cavity by using a driving device, continuously vacuumizing in the stirring process, continuously blowing argon into the vacuum cavity by using the lifting of a stain pipe so as to keep the fluidity of the molten steel, and then carrying out vacuum distillation, decarburization, oxidation and vulcanization;
(2) the vacuum distillation operation for improving the yield of the antimony element comprises the following specific operations: performing preliminary vacuum distillation operation on crude antimony by adopting an electrothermal vacuum furnace, wherein the residual pressure is 133.3Pa, and the temperature is lower than the boiling point of antimony by hundreds of degrees; the temperature lower than the antimony boiling point by hundreds of degrees is 500-530 degrees;
(3) the decarburization operation for improving the yield of the antimony element is specifically as follows: starting decarburization operation in the vacuum chamber, wherein the time required in the decarburization process is 10-15min, and during the period, continuously extracting vacuum in the RH vacuum chamber to accelerate the decarburization efficiency;
(4) the oxidation operation for improving the yield of the antimony element comprises the following specific operations: after the molten steel is decarburized, putting a deoxidizing agent into the molten steel, penetrating a stain pipe into the bottom of the molten steel, continuously inputting an oxidant I into the molten steel, and then continuously inputting an oxidant II to promote oxidation of crude antimony; the time for inputting the first oxidant is 3min, and the time for inputting the second oxidant is 5 min; the first oxidant and the second oxidant can be fluorine gas and potassium permanganate;
(5) the vulcanization operation for improving the yield of the antimony element comprises the following specific operations: a certain amount of desulfurizer is prepared according to the capacity of the molten steel, and the molten steel and the desulfurizer are fully mixed and stirred by using a stirring device; the desulfurizer can be limestone and gypsum, the ratio of the desulfurizer to the molten steel is 1:500g, the desulfurizer needs to be crushed first, and the desulfurizer is uniformly sprayed in the molten steel by a spraying device.
When the method is used, the crude antimony is subjected to vacuum distillation, decarburization, oxidation and desulfurization treatment, so that the yield of antimony in the crude antimony is greatly improved, the content and quality of the antimony are ensured, and the use requirement of an industrial process is met
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. An RH vacuum refining method capable of improving the yield of antimony is characterized by comprising the following specific steps:
(1) centralizing the steel ladles, driving the steel ladles to lift by using a winch, hoisting the steel ladles into an RH vacuum cavity by using the winch, vacuumizing air in the vacuum cavity, placing molten steel in the vacuum cavity, stirring the molten steel in the vacuum cavity by using a driving device, continuously vacuumizing in the stirring process, continuously blowing argon into the vacuum cavity by using the lifting of a stain pipe so as to keep the fluidity of the molten steel, and then carrying out vacuum distillation, decarburization, oxidation and vulcanization;
(2) the vacuum distillation operation for improving the yield of the antimony element comprises the following specific operations: performing preliminary vacuum distillation operation on crude antimony by adopting an electrothermal vacuum furnace, wherein the residual pressure is 133.3Pa, and the temperature is lower than the boiling point of antimony by hundreds of degrees;
(3) the decarburization operation for improving the yield of the antimony element is specifically as follows: starting decarburization operation in the vacuum chamber, wherein the time required in the decarburization process is 10-15min, and during the period, continuously extracting vacuum in the RH vacuum chamber to accelerate the decarburization efficiency;
(4) the oxidation operation for improving the yield of the antimony element comprises the following specific operations: after the molten steel is decarburized, putting a deoxidizing agent into the molten steel, penetrating a stain pipe into the bottom of the molten steel, continuously inputting an oxidant I into the molten steel, and then continuously inputting an oxidant II to promote oxidation of crude antimony;
(5) the vulcanization operation for improving the yield of the antimony element comprises the following specific operations: according to the required amount of the desulfurizer, the molten steel and the desulfurizer are fully mixed and stirred by a stirring device.
2. The RH vacuum refining method for increasing the yield of Sb, as claimed in claim 1, wherein the temperature lower than the hundred ° Celsius boiling point of Sb in step (2) is 500-530 ℃.
3. The RH vacuum refining method capable of improving the yield of Sb, according to claim 1, wherein the time for feeding the first oxidant in step (4) is 3min, and the time for feeding the second oxidant is 5 min.
4. The RH vacuum refining method for increasing the yield of Sb, according to claim 1, wherein the first and second oxidants are selected from the group consisting of fluorine and potassium permanganate.
5. The RH vacuum refining method for increasing the yield of Sb, according to claim 1, wherein the desulfurizing agent is limestone or gypsum.
6. The RH vacuum refining method capable of improving the yield of Sb, according to claim 1, wherein the ratio of the desulfurizing agent to the molten steel in step (5) is 1:500 g.
7. The RH vacuum refining method of claim 1, wherein the desulfurizing agent is pulverized and uniformly sprayed into the molten steel by a spraying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180661.9A CN112458302A (en) | 2020-10-29 | 2020-10-29 | RH vacuum refining method capable of improving antimony element yield |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011180661.9A CN112458302A (en) | 2020-10-29 | 2020-10-29 | RH vacuum refining method capable of improving antimony element yield |
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| Publication Number | Publication Date |
|---|---|
| CN112458302A true CN112458302A (en) | 2021-03-09 |
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| CN202011180661.9A Pending CN112458302A (en) | 2020-10-29 | 2020-10-29 | RH vacuum refining method capable of improving antimony element yield |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545028A (en) * | 2008-03-24 | 2009-09-30 | 宝山钢铁股份有限公司 | Multifunctional vacuum refining process |
| CN104328289A (en) * | 2014-10-10 | 2015-02-04 | 昆明理工大学 | Method for removal of lead and arsenic in crude antimony vacuum refining process |
| CN104651625A (en) * | 2015-02-05 | 2015-05-27 | 昆明理工大学 | Method for removing antimony-lead-arsenic from antimony-containing crude tin alloy by vacuum distillation |
| CN105200195A (en) * | 2015-10-26 | 2015-12-30 | 江苏省沙钢钢铁研究院有限公司 | RH vacuum refining method for improving antimony element yield |
| CN105543448A (en) * | 2015-12-25 | 2016-05-04 | 江苏省沙钢钢铁研究院有限公司 | Method for improving yield of antimony element in RH vacuum refining |
| CN105950829A (en) * | 2016-05-25 | 2016-09-21 | 江苏省沙钢钢铁研究院有限公司 | Antimony wire for RH refining and adding method thereof |
| CN106893798A (en) * | 2017-04-02 | 2017-06-27 | 首钢总公司 | A kind of corrosion-resisting steel adds the smelting process of antimony |
-
2020
- 2020-10-29 CN CN202011180661.9A patent/CN112458302A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545028A (en) * | 2008-03-24 | 2009-09-30 | 宝山钢铁股份有限公司 | Multifunctional vacuum refining process |
| CN104328289A (en) * | 2014-10-10 | 2015-02-04 | 昆明理工大学 | Method for removal of lead and arsenic in crude antimony vacuum refining process |
| CN104651625A (en) * | 2015-02-05 | 2015-05-27 | 昆明理工大学 | Method for removing antimony-lead-arsenic from antimony-containing crude tin alloy by vacuum distillation |
| CN105200195A (en) * | 2015-10-26 | 2015-12-30 | 江苏省沙钢钢铁研究院有限公司 | RH vacuum refining method for improving antimony element yield |
| CN105543448A (en) * | 2015-12-25 | 2016-05-04 | 江苏省沙钢钢铁研究院有限公司 | Method for improving yield of antimony element in RH vacuum refining |
| CN105950829A (en) * | 2016-05-25 | 2016-09-21 | 江苏省沙钢钢铁研究院有限公司 | Antimony wire for RH refining and adding method thereof |
| CN106893798A (en) * | 2017-04-02 | 2017-06-27 | 首钢总公司 | A kind of corrosion-resisting steel adds the smelting process of antimony |
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