CN112626358A - Method for recovering antimony from blast furnace slag - Google Patents
Method for recovering antimony from blast furnace slag Download PDFInfo
- Publication number
- CN112626358A CN112626358A CN202011512133.9A CN202011512133A CN112626358A CN 112626358 A CN112626358 A CN 112626358A CN 202011512133 A CN202011512133 A CN 202011512133A CN 112626358 A CN112626358 A CN 112626358A
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- China
- Prior art keywords
- antimony
- blast furnace
- recovering
- furnace slag
- heat preservation
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- 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
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- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
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- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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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
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a method for recovering antimony from blast furnace slag. The method for recovering antimony from blast furnace slag comprises the following steps: s1: introducing antimony-containing furnace slag in the blast furnace into a heat preservation device; s2: introducing oxygen into the heat preservation device to perform secondary oxidation reaction with the antimony-containing furnace slag; s3: recovering smoke dust generated by the secondary oxidation reaction, wherein the smoke dust contains antimony oxide powder; s4: the method comprises the following steps of filtering and purifying collected smoke dust, collecting antimony oxide powder, constructing a heat preservation furnace by refractory bricks, introducing oxygen into the heat preservation furnace through an oxygen generator, a pipeline and a high-temperature blast rod in the step S2, recycling the smoke dust through a cloth bag dust collection device in the step S3, forming a dust collection port on the top side of the heat preservation furnace, and connecting the dust collection port with the cloth bag dust collection device. The method for recovering antimony from blast furnace slag provided by the invention has the advantages of simple process and high recovery efficiency.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a method for recovering antimony from blast furnace slag.
Background
The blast furnace uses coke as fuel, iron ore (0.25-0.28) and limestone (0.05) as flux to produce slag, the main raw materials are green sand and concentrate (1:2-3), these materials are successively fed into the blast furnace to make reaction, firstly, the coke, then the iron ore and limestone and finally the lump ore, concentrate and other valuable materials, such as return material, fire house ash and antimony matte are fed into the blast furnace, the above-mentioned sequence is based on the arrangement of feeding reaction successively, and the material feeding quantity is technological proportioning, and the proportioning is regulated according to the components in the raw materials, and after the component of waste slag flowed out after reaction is tested, all the materials of the lump ore, return material and others are passed through the vibration feeder whose lower end is equipped with CZ4, the vibrating feeder gives the material to the weighing hopper in the measurement, and the material after the measurement passes through in the belt transports blast furnace roof feeder hopper, opens the feeder hopper through hoisting device, with the material according to the precedence order join in marriage in the blast furnace, reaction process in the blast furnace: the coke combustion provides the reaction heat energy, the iron ore and the limestone melt into the flux for slagging by utilizing the characteristic of low melting point, so that a molten pool is formed in a hearth, lump ore and concentrate react at high temperature, the antimony sulfide in the raw material volatilizes into gaseous antimony sulfide gas, and then the gaseous antimony sulfide gas reacts with oxygen to produce antimony oxide, the reaction is mainly carried out in a gooseneck and a fire cupboard, the gooseneck has the function of a flue, in the flue gas of the gooseneck and the fire cupboard, partial powder (coke ash, fine ore ash and the like) can be pumped into the gooseneck and the fire cupboard along with the action of air pumping, for the convenience of cleaning, the gooseneck is arranged into the flue with an angle, the fire cupboard mainly aims of facilitating the settling of the powder, increasing the sectional area and reducing the flow rate, after the powder settles, carrying out the secondary oxidation-reduction reaction at high temperature, further reacting, along with the backward movement of the flue gas and reducing the temperature, the generated antimony oxide exists in the form of white powder, namely, the product of the blast furnace, the sulfur dioxide contained in the flue gas is provided with a desulfurization device in the back end system for environment-friendly treatment, the outlet of the fire cabinet is provided with a surface cooling device for ensuring the outlet temperature of the flue gas, the process is a physical process, and the bag chamber arranged at the back end of the surface cooling device is used for recovering the oxygen extraction powder in the flue gas. After the valuable material antimony sulfide in the blast furnace volatilizes, the remaining material components mainly comprise silicon oxide, iron oxide and calcium oxide, the main sources of the components are the components in the raw materials and the raw auxiliary materials, the valuable material is taken away by air draft through the gaseous state, the remaining material components form high-temperature liquid which is stored in a furnace cylinder, 100% of the valuable material cannot be reacted in the reaction process of the blast furnace, the discharged high-temperature liquid contains certain grade of antimony in furnace slag or waste residue, and the antimony content in the waste residue is about 1.4%, so that huge waste is caused.
Therefore, there is a need to provide a new method for recovering antimony from blast furnace slag to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a method for recovering antimony from blast furnace slag, which has simple process and high recovery efficiency.
In order to solve the technical problem, the method for recovering antimony from blast furnace slag provided by the invention comprises the following steps:
s1: introducing antimony-containing furnace slag in the blast furnace into a heat preservation device;
s2: introducing oxygen into the heat preservation device to perform secondary oxidation reaction with the antimony-containing furnace slag;
s3: recovering smoke dust generated by the secondary oxidation reaction, wherein the smoke dust contains antimony oxide powder;
s4: and filtering and purifying the collected smoke dust, and collecting to obtain antimony oxide powder.
Preferably, the antimony-containing slag is introduced into the heat preservation device from the blast furnace and is in a liquid state.
Preferably, the antimony element in the antimony-containing slag is present in the form of antimony sulfide.
Preferably, the heat preservation device is a heat preservation furnace built by refractory bricks.
Preferably, the heat preservation device is used for preserving heat by using heat generated by combustion of bituminous coal fuel.
Preferably, in step S2, oxygen is introduced into the heat preservation device through an oxygen generator, a pipeline and a high-temperature air blast rod.
Preferably, the secondary oxidation reaction in step S2 generates antimony oxide gas, and the temperature of the antimony oxide gas decreases with the backward movement of the flue gas, so as to generate antimony oxide powder.
Preferably, in step S3, the dust is recovered by a bag dust collector.
Preferably, the top side of the heat preservation device is provided with a dust collection port, and the dust collection port is connected with the cloth bag dust collection device.
Compared with the related art, the method for recovering antimony from blast furnace slag provided by the invention has the following beneficial effects:
the invention provides a method for recovering antimony from blast furnace slag, which comprises the steps of carrying out secondary oxidation recovery on waste slag, enabling the waste slag flowing out of a blast furnace to flow into a heat preservation device, introducing oxygen, carrying out secondary oxygen ash, and recovering volatile antimony oxide, so that the grade of the waste slag is reduced to 0.6%, the direct yield index can be improved, and the economic benefit is huge.
Detailed Description
The present invention will be further described with reference to the following embodiments.
A method for recovering antimony from blast furnace slag comprises the following steps:
s1: introducing antimony-containing furnace slag in the blast furnace into a heat preservation device;
s2: introducing oxygen into the heat preservation device to perform secondary oxidation reaction with the antimony-containing furnace slag;
s3: recovering smoke dust generated by the secondary oxidation reaction, wherein the smoke dust contains antimony oxide powder;
s4: and filtering and purifying the collected smoke dust, and collecting to obtain antimony oxide powder.
Specifically, the antimony-containing slag is introduced into the heat preservation device from the blast furnace and is in a liquid state.
Specifically, the antimony element in the antimony-containing slag exists in the form of antimony sulfide.
Specifically, the heat preservation device is a heat preservation furnace built by refractory bricks.
Specifically, the heat preservation device is used for preserving heat through heat generated by combustion of bituminous coal fuel.
Specifically, it is right through oxygenerator, pipeline and high temperature blast air stick in the heat preservation device to lead to oxygen in step S2, will go into the waste residue bottom with oxygen, let oxygen and waste residue abundant contact reaction, carry out secondary oxidation reaction under high temperature to play the effect of stirring, under high temperature, the antimony sulfide in the sediment reacts with oxygen once more, produces antimony oxide gas.
Specifically, in the step S2, the secondary oxidation reaction generates antimony oxide gas, and the temperature of the antimony oxide gas decreases with the backward movement of the flue gas, so as to generate antimony oxide powder.
Specifically, in step S3, the soot is recovered by a bag dust collector.
Specifically, a dust collecting port is formed in the top side of the heat preservation device, and the dust collecting port is connected with the cloth bag dust collecting device.
Compared with the related art, the method for recovering antimony from blast furnace slag provided by the invention has the following beneficial effects:
the invention provides a method for recovering antimony from blast furnace slag, which comprises the steps of carrying out secondary oxidation recovery on waste slag, enabling the waste slag flowing out of a blast furnace to flow into a heat preservation device, introducing oxygen, carrying out secondary oxygen ash, and recovering volatile antimony oxide, so that the grade of the waste slag is reduced to 0.6%, the direct yield index can be improved, and the economic benefit is huge.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for recovering antimony from blast furnace slag is characterized by comprising the following steps:
s1: introducing antimony-containing furnace slag in the blast furnace into a heat preservation device;
s2: introducing oxygen into the heat preservation device to perform secondary oxidation reaction with the antimony-containing furnace slag;
s3: recovering smoke dust generated by the secondary oxidation reaction, wherein the smoke dust contains antimony oxide powder;
s4: and filtering and purifying the collected smoke dust, and collecting to obtain antimony oxide powder.
2. The method of claim 1 wherein the antimony-containing slag is in liquid form when it is introduced into the holding apparatus from the blast furnace.
3. The method of claim 1, wherein the antimony element in the antimony-containing slag is present as antimony sulfide.
4. The method according to claim 1, wherein the holding apparatus is a refractory brick-constructed holding furnace.
5. The method of claim 1, wherein the holding means holds the temperature by heat generated by combustion of bituminous coal fuel.
6. The method for recovering antimony from blast furnace slag according to claim 1, wherein said step S2 is carried out by introducing oxygen into said holding means through an oxygen generator, a pipeline and a high temperature blast bar.
7. The method for recovering antimony from blast furnace slag according to claim 1, wherein said secondary oxidation reaction in step S2 produces antimony oxide gas, and said antimony oxide gas decreases with the temperature of the flue gas moving backward to produce antimony oxide powder.
8. The method according to claim 1, wherein the flue dust is recovered by a bag dust collector in step S3.
9. The method according to claim 8, wherein a dust collecting port is formed on the top side of the heat retaining device, and the dust collecting port is connected with the cloth bag dust collecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011512133.9A CN112626358A (en) | 2020-12-19 | 2020-12-19 | Method for recovering antimony from blast furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011512133.9A CN112626358A (en) | 2020-12-19 | 2020-12-19 | Method for recovering antimony from blast furnace slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112626358A true CN112626358A (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011512133.9A Pending CN112626358A (en) | 2020-12-19 | 2020-12-19 | Method for recovering antimony from blast furnace slag |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455181A (en) * | 1935-12-13 | 1936-10-15 | American Smelting Refining | Improvements relating to the production of antimony oxide |
| US4194904A (en) * | 1978-08-04 | 1980-03-25 | N L Industries, Inc. | Production of purified lead and antimony oxide |
| GB2066798A (en) * | 1980-01-02 | 1981-07-15 | Nl Industries Inc | Production of purified lead and antimony oxide |
| CN1339612A (en) * | 2000-08-18 | 2002-03-13 | 夏延波 | Process for directly producing super fine antimony trioxide by volatilizing smelting in blast furnace and its special equipment |
| CN101942575A (en) * | 2010-08-27 | 2011-01-12 | 河南豫光金铅股份有限公司 | Production method of continuous antimony smelting by bottom blowing bath smelting of stibnite and device thereof |
| WO2013034049A1 (en) * | 2011-09-05 | 2013-03-14 | 耒阳市焱鑫有色金属有限公司 | Comprehensive recovery method for complex material containing arsenic and valuable metal slags |
| CN103173636A (en) * | 2013-03-06 | 2013-06-26 | 中南大学 | Antimony sulfide concentrate oxygen-enriched melting tank melting method |
| WO2014015778A1 (en) * | 2012-07-23 | 2014-01-30 | Fan Youyu | Method for separating antimony mercury from flue gas generated by antimony mercury ore smelting |
| CN108456789A (en) * | 2017-12-26 | 2018-08-28 | 中国恩菲工程技术有限公司 | The extracting method of antimony metal |
-
2020
- 2020-12-19 CN CN202011512133.9A patent/CN112626358A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455181A (en) * | 1935-12-13 | 1936-10-15 | American Smelting Refining | Improvements relating to the production of antimony oxide |
| US4194904A (en) * | 1978-08-04 | 1980-03-25 | N L Industries, Inc. | Production of purified lead and antimony oxide |
| GB2066798A (en) * | 1980-01-02 | 1981-07-15 | Nl Industries Inc | Production of purified lead and antimony oxide |
| CN1339612A (en) * | 2000-08-18 | 2002-03-13 | 夏延波 | Process for directly producing super fine antimony trioxide by volatilizing smelting in blast furnace and its special equipment |
| CN101942575A (en) * | 2010-08-27 | 2011-01-12 | 河南豫光金铅股份有限公司 | Production method of continuous antimony smelting by bottom blowing bath smelting of stibnite and device thereof |
| WO2013034049A1 (en) * | 2011-09-05 | 2013-03-14 | 耒阳市焱鑫有色金属有限公司 | Comprehensive recovery method for complex material containing arsenic and valuable metal slags |
| WO2014015778A1 (en) * | 2012-07-23 | 2014-01-30 | Fan Youyu | Method for separating antimony mercury from flue gas generated by antimony mercury ore smelting |
| CN103173636A (en) * | 2013-03-06 | 2013-06-26 | 中南大学 | Antimony sulfide concentrate oxygen-enriched melting tank melting method |
| CN108456789A (en) * | 2017-12-26 | 2018-08-28 | 中国恩菲工程技术有限公司 | The extracting method of antimony metal |
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Application publication date: 20210409 |
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