CN113718109A - Method for determining slag form of electronic waste smelted in molten pool and slag form - Google Patents
Method for determining slag form of electronic waste smelted in molten pool and slag form Download PDFInfo
- Publication number
- CN113718109A CN113718109A CN202111018221.8A CN202111018221A CN113718109A CN 113718109 A CN113718109 A CN 113718109A CN 202111018221 A CN202111018221 A CN 202111018221A CN 113718109 A CN113718109 A CN 113718109A
- Authority
- CN
- China
- Prior art keywords
- slag
- electronic waste
- percent
- calcium
- determining
- 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.)
- Granted
Links
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
- 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
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/202—Constituents thereof
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method for determining slag type of electronic waste smelted in a molten pool, which comprises the following steps: (1) determining the content of oxide components forming a slag system in the electronic waste; (2) searching a low-melting-point area in a silicon-calcium-iron series and silicon-calcium-aluminum series ternary phase diagram; (3) searching corresponding additives forming a low melting point region of a silicon-calcium-iron series and silicon-calcium-aluminum series ternary phase diagram; (4) determining the content of each additive corresponding to the unit electronic waste; (5) carrying out a molten pool smelting test according to the content of each additive corresponding to the determined unit electronic waste, and verifying whether the slag type is an ideal slag type; (6) if the slag type is not ideal, returning to the step (3) and repeating the steps until the ideal slag type is found; (7) and drawing a quaternary slag type phase diagram based on a silicon-calcium-iron system or a silicon-calcium-aluminum system according to the determined ideal slag type. The method has simple steps and strong operability, and is also suitable for determining the slag forms of other novel smelting processes without reference materials.
Description
Technical Field
The invention relates to the technical field of resource utilization of nonferrous metals, in particular to a method for determining a slag type of electronic waste smelted in a molten pool and the slag type.
Background
With the rapid development of economy, the speed of updating and eliminating various electronic and electric products is increased year by year, and the electronic waste generated along with the speed is increased year by year. The main components of the electronic waste are synthetic resin, rubber, copper, binder, etc. The electronic waste is directly stockpiled without being treated, and a large amount of land resources are occupied firstly; secondly, the contained high molecular materials are difficult to degrade, which causes serious pollution to the ecological environment. With the progress of the technology and the stricter requirement on environmental protection, the traditional electronic waste treatment processes such as blast furnace incineration, wet acid leaching and the like have the tendency of gradually eliminating, and the molten pool smelting process has the industrialized popularization prospect due to the advantages of high furnace heat efficiency, thorough decomposition of organic matters and the like.
The existing production practice of cooperatively treating electronic wastes by using a molten pool smelting furnace at home and abroad has the defects that the proportion of the electronic wastes in raw materials entering the furnace is very low, the data of raw material components, a slag type system and the like are almost different from the data of pure electronic waste treatment, and the reference value is limited. Therefore, the development of a slag form for smelting electronic waste in a molten pool is needed to improve the design efficiency of the slag form.
Disclosure of Invention
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a method for determining a slag form of molten pool melting electronic waste and a slag form suitable for a pyrometallurgical process of molten pool melting processing electronic waste through multiple slag form tests and repeated research. The invention can realize normal production of the process for treating the electronic waste by smelting in the molten pool, and has clear slag, good fluidity and high metal recovery rate.
In order to achieve the purpose, the invention adopts the main technical scheme that:
the invention provides a method for determining slag type of electronic waste smelted in a molten pool, which comprises the following steps:
(1) determining the content of oxide components forming a slag system in the electronic waste by adopting chemical quantitative analysis and X-ray fluorescence spectrum analysis;
(2) searching a low-melting-point area in a ternary phase diagram of a silicon-calcium-iron system and a silicon-calcium-aluminum system, which is drawn by utilizing FactSage software;
(3) according to the metallurgical phase diagram theory and the content of the oxide components in the step (1), searching for additives corresponding to the low-melting-point regions of the ternary phase diagram of silicon-calcium-iron system and silicon-calcium-aluminum system in the step (2);
(4) performing metallurgical calculation through Excel software, and determining the content of each additive corresponding to the electronic waste in unit;
(5) carrying out a molten pool smelting test according to the content of each additive corresponding to the determined unit electronic waste, and verifying whether the slag type is an ideal slag type;
(6) tests prove that if the slag type is not ideal, the step (3) is returned to repeat the steps until the ideal slag type is found;
(7) and drawing a quaternary slag type phase diagram based on a silicon-calcium-iron system or a silicon-calcium-aluminum system by utilizing FactSage software according to the determined ideal slag type.
Further, the additive comprises one or more of lime, limestone, dolomite, quartz sand, iron ore concentrate, sinter and pellet.
Further, the ideal slag type satisfies: the copper content in the slag is less than 0.7 percent, and the copper recovery rate is more than 95 percent.
Further, the ideal slag form comprises the following components in percentage by weight: 28 to 35 percent of silicon dioxide, 18 to 25 percent of calcium oxide, 6 to 13 percent of aluminum oxide and 16 to 20 percent of iron oxide, wherein the total content of the four components is more than 80 percent of the total weight of the slag.
Further, the molten bath smelting is realized by molten bath smelting furnaces, which comprise side-blowing type, bottom-blowing type, top-side combined blowing type, top-bottom combined blowing type molten bath smelting furnaces and silver smelting furnaces.
Furthermore, the electronic waste is various copper-containing electronic wastes, including waste plugs, waste cables, waste circuit boards and waste chargers.
The invention also provides a slag form of the electronic waste smelted in the molten pool, which is determined according to the determination method and comprises the following components in percentage by weight: 28 to 35 percent of silicon dioxide, 18 to 25 percent of calcium oxide, 6 to 13 percent of aluminum oxide and 16 to 20 percent of iron oxide, wherein the total content of the four components is more than 80 percent of the total weight of the slag.
The invention has the beneficial effects that:
1. the invention provides a method for determining the slag type of electronic waste smelted in a molten pool, which has simple steps and strong operability and is also suitable for determining the slag type of other novel smelting processes without reference materials.
2. The invention provides a molten pool smelting treatment electronic waste slag type and a drawn slag type phase diagram, which fill up the technical blank in the related fields of the international and the domestic fields. The method has a good reference function on the selection and the proportion of the electronic waste slag processed by various molten pool smelting furnaces in the future.
3. The slag type can maintain the normal production of a new process for treating electronic waste by smelting in a molten pool, the produced slag is clear, the slag can be discharged in an overflowing way, and the metal recovery rate is high.
Drawings
FIG. 1 is a drawing of SiO using factSage software according to the present invention2-CaO-Al2O3Ternary phase diagram.
FIG. 2 is a drawing of SiO using factSage software in accordance with the present invention2-CaO-FeO ternary phase diagram.
FIG. 3 is a schematic diagram of the liquid phase region of different FeO contents in the Si-Ca-Al system of the present invention.
FIG. 4 shows different Al in Si-Ca-Fe system of the present invention2O3Content liquid phase region diagram
FIG. 5 is a slag phase diagram (based on Si-Ca-Fe system) of the present invention for treating electronic waste by molten bath smelting.
FIG. 6 is a slag phase diagram (based on Si-Ca-Al system) of the present invention for treating electronic waste by molten bath smelting.
FIG. 7 is a photograph of metal and slag crystals under an ideal slag form of the present invention.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Example (b):
the invention provides a method for determining a slag type of electronic waste smelted in a molten pool, which comprises the following steps:
(1) the raw materials come from various copper-containing electronic wastes collected on the market, and after crushing, uniformly mixing and roasting at 650 ℃, the residual residue components are analyzed by chemical quantitative analysis and X-ray fluorescence spectroscopy, and the table 1 shows.
TABLE 1 main component of roasting residue (unit: g/t)
As can be seen from Table 1, Al is contained in the baking residue of the used circuit board2O3Content > 15%, Al2O3Being an amphoteric oxide, Al2O3The presence of (B) has a large influence on the slag viscosity, Al2O3The higher the content, the higher the slag melting point and the greater the viscosity. Combining the phase diagram theory, considering that at 1300 ℃, the Al in the slag is reduced by adding the solvent and balancing the slag components2O3Relative content of SiO2-CaO-Al2O3Al in ternary system2O3Component line is to SiO2The CaO borderline moves, thus forming a larger liquid phase region.
(2) Because the waste circuit board roasting residues contain FeO, drawing SiO by the factSage software2-CaO-FeO ternary phase diagram, as shown in FIG. 2. In SiO2CaO-SiO in ternary diagram of-CaO-FeO2With FeO-SiO2An elongated band-like region on the junction line near fayalite is a region of the ternary system with a relatively low melting temperature, the minimum melting temperature being about 1093 ℃. The low melting point region extending from the center to the periphery of the melting point is optional SiO2The slag zone range of CaO-FeO.
(3) SiO in the raw material by combining the metallurgical phase diagram theory and the roasting residue component in the step (1)2And Al2O3It has been found that in the theoretical range, the CaO and FeO contents are relatively highLow, so that it is considered to supplement the contents of CaO and FeO to balance the slag components and reduce the slag viscosity. Limestone (CaO is more than or equal to 55 percent) is selected as an additive of CaO, pellets (TFe is more than or equal to 62 percent) are selected as an additive of FeO, and a slag type proportioning test at 1300 ℃ is carried out.
(4) And performing metallurgical calculation through Excel software to determine the corresponding contents of limestone and pellets under different electronic waste components. Referring to FIGS. 1 and 2, SiO was analyzed2-CaO-Al2O3Ternary phase diagram and SiO2As can be seen from the ternary phase diagram of CaO and FeO, the ideal overlapping range of the CaO content in the two ternary slag systems is between 18 and 25 percent, so that the increase of the solvent adjustment slag type mainly aims at adjusting the FeO content. Referring to FIG. 3, in SiO2-CaO-Al2O3In the system, the liquid phase region increases with the increase of the content of FeO, the liquid phase region is the largest when the content of FeO is 16-20%, and the liquid phase region begins to become smaller when the content of FeO exceeds 20%, which shows that the addition of FeO reduces Al in the slag2O3Resulting in a decrease in slag viscosity. Referring to FIG. 4, after FeO is added, Al2O3Larger liquid phase regions can be formed at contents of 6% to 13%. When Al is present2O3As the content continues to increase, the liquid phase region gradually decreases due to Al2O3The increase of the content causes the increase of the slag viscosity and the deterioration of the fluidity. Al (Al)2O3When the content is more than 14 percent, SiO2-CaO-Al2O3The liquid phase region in the quaternary slag system of-FeO is narrow, which indicates that the Al in the raw materials fed into the furnace should be strictly controlled in production practice2O3And (4) content.
(5) And carrying out a molten pool melting test. The test molten pool smelting furnace is a cylindrical fixed shaft furnace, a spray gun is cooled by circulating water through special design, and a water-cooling spray gun is inserted into the furnace from the top of the furnace and suspended above the molten pool. The broken electronic waste is added into the furnace from the top of the furnace, and fuel and air are sprayed into the furnace through a water-cooling spray gun. The test results for the different slag type ranges are shown in table 2.
TABLE 2 test results of different slag types
As can be seen from Table 2, the slag types 2#, 3#, 4# and 5# contain less than 1% of copper, and the copper recovery rate is more than 88%, so that the production requirements can be met, and the slag type slag is an ideal slag type. The 4# slag type test result shows that the slag has the best fluidity, the copper content in the slag is 0.65 percent, the copper recovery rate reaches 96.65 percent, and the slag belongs to an ideal slag type for treating electronic waste by melting bath smelting.
Under an ideal slag type, an expansion test verifies that the crude copper contains 94.69 percent of Cu, 133.0g/t of Au and 1579g/t of Ag, the total recovery rates of Cu, Au and Ag are all more than 95 percent, the metal and slag are thoroughly separated, the average copper content of the slag is less than 0.7 percent, the slag is clear and bright, the fluidity is high, and the overflow slag discharge condition is good.
(6) Referring to fig. 5 and 6, ideal slag phase diagrams were drawn using FactSage software. Under an ideal slag type, an industrial test is carried out, the slag fluidity is good, the overflow continuous slag discharge can be realized, the metal and the slag are thoroughly separated, the obtained crude copper contains 94.69 percent of Cu, 133.0g/t of Au and 1579g/t of Ag, the total recovery rates of Cu, Au and Ag are all more than 95 percent, and the average copper content of the slag is less than 0.7 percent. The crystallization of metal and slag under the ideal slag form is shown in figure 7, the slag is transparent and clear, and the crystallization condition of metal particles is good.
The invention provides a slag form for treating electronic waste by melting in a melting pool and a drawn slag form phase diagram, which fill up the technical blank in the related fields of the international and domestic fields. The slag mold can realize normal production of a process for treating electronic waste by smelting in a molten pool, and has the advantages of clear slag, good fluidity and high metal recovery rate.
The slag form determination method for treating electronic waste by molten pool smelting is also suitable for determining the slag forms of other novel smelting processes without reference materials.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (7)
1. A method for determining the slag type of electronic waste smelted in a molten pool is characterized by comprising the following steps:
(1) determining the content of oxide components forming a slag system in the electronic waste;
(2) searching a low-melting-point area in a silicon-calcium-iron series and silicon-calcium-aluminum series ternary phase diagram;
(3) according to the metallurgical phase diagram theory and the content of the oxide components in the step (1), searching for additives corresponding to the low-melting-point regions of the ternary phase diagram of silicon-calcium-iron system and silicon-calcium-aluminum system in the step (2);
(4) determining the content of each additive corresponding to the unit electronic waste through calculation;
(5) carrying out a molten pool smelting test according to the content of each additive corresponding to the determined unit electronic waste, and verifying whether the slag type is an ideal slag type;
(6) tests prove that if the slag type is not ideal, the step (3) is returned to repeat the steps until the ideal slag type is found;
(7) and drawing a quaternary slag type phase diagram based on a silicon-calcium-iron system or a silicon-calcium-aluminum system according to the determined ideal slag type.
2. The method of determining the slag type of molten bath smelting electronic waste of claim 1, wherein the additives include one or more of lime, limestone, dolomite, quartz sand, iron ore concentrate, sinter, and pellet.
3. The method of determining the slag type of molten bath smelting electronic waste according to claim 1, wherein the ideal slag type satisfies: the copper content in the slag is less than 0.7 percent, and the copper recovery rate is more than 95 percent.
4. The method of determining the slag profile of molten bath smelting electronic waste of claim 1, wherein the ideal slag profile comprises the following components in weight percent: 28 to 35 percent of silicon dioxide, 18 to 25 percent of calcium oxide, 6 to 13 percent of aluminum oxide and 16 to 20 percent of iron oxide, wherein the total content of the four components is more than 80 percent of the total weight of the slag.
5. The method for determining the slag type of molten bath smelting electronic waste according to claim 1, wherein the molten bath smelting is performed by molten bath smelting furnaces including side-blown, bottom-blown, top-side double-blown, top-bottom double-blown molten bath smelting furnaces and silver smelting furnaces.
6. The method for determining the slag type of molten bath smelting electronic waste according to claim 1, wherein the electronic waste is various copper-containing electronic waste including waste plugs, waste cables, waste circuit boards and waste chargers.
7. Slag form for molten bath smelting electronic waste, characterized in that it comprises, in weight percentages, the following components, determined according to the determination method of any one of claims 1 to 6: 28 to 35 percent of silicon dioxide, 18 to 25 percent of calcium oxide, 6 to 13 percent of aluminum oxide and 16 to 20 percent of iron oxide, wherein the total content of the four components is more than 80 percent of the total weight of the slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111018221.8A CN113718109B (en) | 2021-09-01 | 2021-09-01 | Method for determining slag form of electronic waste smelted in molten pool and slag form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111018221.8A CN113718109B (en) | 2021-09-01 | 2021-09-01 | Method for determining slag form of electronic waste smelted in molten pool and slag form |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113718109A true CN113718109A (en) | 2021-11-30 |
| CN113718109B CN113718109B (en) | 2022-10-18 |
Family
ID=78680314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111018221.8A Active CN113718109B (en) | 2021-09-01 | 2021-09-01 | Method for determining slag form of electronic waste smelted in molten pool and slag form |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113718109B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4001011A (en) * | 1975-12-29 | 1977-01-04 | Kennecott Copper Corporation | Pyrometallurgical recovery of iron from iron silicate slags |
| JPH11128875A (en) * | 1997-10-29 | 1999-05-18 | Mitsubishi Materials Corp | Treatment of incineration dust and ash |
| JP2002309312A (en) * | 2001-02-06 | 2002-10-23 | Sumitomo Metal Ind Ltd | Method for refining molten iron |
| JP2004143034A (en) * | 2002-08-29 | 2004-05-20 | Nippon Steel Corp | Method for modifying steel making slag and modified steel making slag |
| CN1683574A (en) * | 2004-12-30 | 2005-10-19 | 云南锡业集团有限责任公司 | High iron slag type formulation in top blowing sinking smelting furnace tin-making process |
| CN101333603A (en) * | 2007-06-25 | 2008-12-31 | 日矿金属株式会社 | Processing and refining method of copper-containing raw material |
| CN102586544A (en) * | 2012-03-20 | 2012-07-18 | 西峡县恒基冶材有限公司 | High-calcium pre-molten slag modification aluminium slag ball and preparation method thereof |
| CN102967157A (en) * | 2012-11-26 | 2013-03-13 | 罕王实业集团有限公司 | Energy-saving and environment-friendly automatic control system for flux burdening of vertical laterite-nickel ore smelting furnace |
| US20150191804A1 (en) * | 2012-08-13 | 2015-07-09 | Mitsubishi Heavy Industries, Ltd. | Blast-furnace blowing coal and method for producing same |
| CN105349787A (en) * | 2015-11-20 | 2016-02-24 | 长沙矿冶研究院有限责任公司 | Recycling method for valuable metal in electronic waste |
| WO2016197201A1 (en) * | 2015-06-12 | 2016-12-15 | Glencore Technology Pty Limited | Method for treating copper concentrates |
| CN107988483A (en) * | 2017-12-07 | 2018-05-04 | 湖北天银报废汽车回收拆解有限公司 | The method of Metal Values From Spent Lithium-ion Batteries recycling |
| CN109844145A (en) * | 2016-11-18 | 2019-06-04 | 贺利氏德国有限两合公司 | The method of alloy of the production rich in PGM |
| CN110835686A (en) * | 2019-11-29 | 2020-02-25 | 北京科技大学 | Platinum group metal trapping agent and platinum group metal recovery method |
| CN112359217A (en) * | 2020-11-23 | 2021-02-12 | 浙江天马轴承集团有限公司 | Supersaturated high-nitrogen stainless steel pressurizing electroslag remelting process |
| CN112981109A (en) * | 2021-02-08 | 2021-06-18 | 中节能工程技术研究院有限公司 | Processing method of waste printed circuit board |
| CN113234891A (en) * | 2021-04-25 | 2021-08-10 | 江苏省沙钢钢铁研究院有限公司 | Recycling method of aluminum ash used as steelmaking deoxidization slagging constituent |
-
2021
- 2021-09-01 CN CN202111018221.8A patent/CN113718109B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4001011A (en) * | 1975-12-29 | 1977-01-04 | Kennecott Copper Corporation | Pyrometallurgical recovery of iron from iron silicate slags |
| JPH11128875A (en) * | 1997-10-29 | 1999-05-18 | Mitsubishi Materials Corp | Treatment of incineration dust and ash |
| JP2002309312A (en) * | 2001-02-06 | 2002-10-23 | Sumitomo Metal Ind Ltd | Method for refining molten iron |
| JP2004143034A (en) * | 2002-08-29 | 2004-05-20 | Nippon Steel Corp | Method for modifying steel making slag and modified steel making slag |
| CN1683574A (en) * | 2004-12-30 | 2005-10-19 | 云南锡业集团有限责任公司 | High iron slag type formulation in top blowing sinking smelting furnace tin-making process |
| CN101333603A (en) * | 2007-06-25 | 2008-12-31 | 日矿金属株式会社 | Processing and refining method of copper-containing raw material |
| CN102586544A (en) * | 2012-03-20 | 2012-07-18 | 西峡县恒基冶材有限公司 | High-calcium pre-molten slag modification aluminium slag ball and preparation method thereof |
| US20150191804A1 (en) * | 2012-08-13 | 2015-07-09 | Mitsubishi Heavy Industries, Ltd. | Blast-furnace blowing coal and method for producing same |
| CN102967157A (en) * | 2012-11-26 | 2013-03-13 | 罕王实业集团有限公司 | Energy-saving and environment-friendly automatic control system for flux burdening of vertical laterite-nickel ore smelting furnace |
| WO2016197201A1 (en) * | 2015-06-12 | 2016-12-15 | Glencore Technology Pty Limited | Method for treating copper concentrates |
| CN105349787A (en) * | 2015-11-20 | 2016-02-24 | 长沙矿冶研究院有限责任公司 | Recycling method for valuable metal in electronic waste |
| CN109844145A (en) * | 2016-11-18 | 2019-06-04 | 贺利氏德国有限两合公司 | The method of alloy of the production rich in PGM |
| CN107988483A (en) * | 2017-12-07 | 2018-05-04 | 湖北天银报废汽车回收拆解有限公司 | The method of Metal Values From Spent Lithium-ion Batteries recycling |
| CN110835686A (en) * | 2019-11-29 | 2020-02-25 | 北京科技大学 | Platinum group metal trapping agent and platinum group metal recovery method |
| CN112359217A (en) * | 2020-11-23 | 2021-02-12 | 浙江天马轴承集团有限公司 | Supersaturated high-nitrogen stainless steel pressurizing electroslag remelting process |
| CN112981109A (en) * | 2021-02-08 | 2021-06-18 | 中节能工程技术研究院有限公司 | Processing method of waste printed circuit board |
| CN113234891A (en) * | 2021-04-25 | 2021-08-10 | 江苏省沙钢钢铁研究院有限公司 | Recycling method of aluminum ash used as steelmaking deoxidization slagging constituent |
Non-Patent Citations (3)
| Title |
|---|
| 王楠等: "中等氧分压下CaO-SiO_2-Al_2O_3-FeO_x体系的液相线及平衡相关系", 《东北大学学报(自然科学版)》 * |
| 田洪鹏 等: "应用FactSage预测CaO助熔剂对模拟灰熔融特性的影响", 《世界化学》 * |
| 郭键柄 等: "顶吹炉处理废旧电路板的渣型理论研究", 《有色金属（冶炼部分）》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113718109B (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105349787B (en) | The recovery and treatment method of valuable metal in electronic waste | |
| CN101705366B (en) | Direct lead smelting method for processing zinc smelting slag by matching | |
| CN105671325A (en) | Dilution treatment method for copper smelting slag | |
| CN104263965A (en) | Method for recovering gold and lead by smelting refractory gold ore and lead-containing waste residue raw materials through oxygen enrichment molten pool | |
| CN107201449A (en) | A kind of method that waste residue containing slicker solder reclaims tin | |
| CN101787445A (en) | DC electric furnace-fuming furnace combined tin-smelting method | |
| CN111778407A (en) | Treatment method for converting sulfur-containing blister copper furnace slag in Kaldo furnace | |
| KR102480489B1 (en) | A process for recovering metal from electronic waste | |
| CN113718109B (en) | Method for determining slag form of electronic waste smelted in molten pool and slag form | |
| CN106834749B (en) | The method of Vanadium Concentrationin from v-bearing steel slag | |
| CN102747231B (en) | Method for treating copper dross by induction electric furnace | |
| CN110724821A (en) | Method for comprehensively recovering valuable metals from low-grade multi-metal hazardous wastes | |
| CN107312931B (en) | Method that is a kind of while recycling noble metal and prepare HIGH-PURITY SILICON | |
| CN112029949B (en) | Method for treating zinc-containing waste steel by adopting converter full-three-step smelting process | |
| CN112030002B (en) | Method for producing blister copper by directly carrying out oxygen-enriched smelting on waste circuit boards | |
| CN110564972B (en) | Treatment method and treatment system for copper removal scum of lead electrolysis anode | |
| CN100410394C (en) | Mehtod for producing zinc concentrate and lead concentrate using zinc oxide ore and zinc slag | |
| KR101863086B1 (en) | Manufacturing method of crude copper and pig iron from low-grade copper sludge | |
| CN112176202A (en) | Antimony smelting method adopting oxygen-enriched side-blown column smelting | |
| CN111748694A (en) | Method for enriching and recovering vanadium resource in vanadium-rich slag | |
| CN110423861B (en) | Method for producing copper-containing steel and application of copper slag as coolant in producing copper-containing steel | |
| CN117385178B (en) | Comprehensive treatment process of complex multi-metal electronic electroplating sludge | |
| CN109609771A (en) | Application of the metal powder in noble metal recycling | |
| CN113584322B (en) | Smelting method and smelting system for copper-lead-zinc containing concentrate | |
| CN104532013B (en) | Method for recycling silver from jarosite residue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |