CN113860365A - Method for treating arsenic-containing gypsum slag by using tin-smelting fuming furnace - Google Patents
Method for treating arsenic-containing gypsum slag by using tin-smelting fuming furnace Download PDFInfo
- Publication number
- CN113860365A CN113860365A CN202111129114.2A CN202111129114A CN113860365A CN 113860365 A CN113860365 A CN 113860365A CN 202111129114 A CN202111129114 A CN 202111129114A CN 113860365 A CN113860365 A CN 113860365A
- Authority
- CN
- China
- Prior art keywords
- arsenic
- slag
- tin
- containing gypsum
- smelting
- 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
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G28/00—Compounds of arsenic
- C01G28/005—Oxides; Hydroxides; Oxyacids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
- C01F11/04—Oxides or hydroxides by thermal decomposition
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than 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
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/04—Obtaining arsenic
-
- 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
-
- 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
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
A method for treating arsenic-containing gypsum slag by using a tin-smelting fuming furnace comprises the steps of continuously adding tin middlings into the tin-smelting fuming furnace at a feeding speed of 10 t/h-20 t/h, and smelting at the temperature of 1100-1150 ℃; continuously adding the mixture of the arsenic-containing gypsum slag and the pyrite into a tin-smelting fuming furnace, heating to 1200-1300 ℃, and carrying out fuming volatilization reaction; CaSO in arsenic-containing gypsum slag4·2H2O is decomposed in weak reducing atmosphere to produce SO2Gas and CaO, SO2The gas participates in the sulfuration volatilization reaction of tin; CaO participates in slagging; ca3(AsO4)2Does not participate in the reaction, and the free arsenic is oxidized into As2O3Entering flue gas; water quenching the molten slag to obtain water-quenched slag; will contain As2O3Cooling the flue gas, collecting the cooled flue gas in smoke dust, roasting the smoke dust, and collecting to obtain As2O3. The method effectively realizes the comprehensive recycling of the arsenic-containing gypsum slag, and is simple, safe and environment-friendly.
Description
Technical Field
The invention relates to the technical field of non-ferrous metal smelting waste residue treatment methods, in particular to a treatment method of arsenic-containing gypsum residue.
Background
The arsenic-containing gypsum slag, also called arsenic-calcium slag, is mainly derived from products produced in the process of desulfurization of smelting flue gas and treatment of arsenic-containing waste acid by using lime and iron salt method, and mainly comprises calcium sulfate (CaSO)4·2H2O), and heavy metal elements such As As and Pb, wherein As is mainly calcium arsenate Ca3(AsO4)2And free arsenic exists, which belongs to dangerous solid waste, and can cause secondary pollution and resource waste to the environment if the dangerous solid waste cannot be effectively treated. The treatment and disposal of arsenic-containing gypsum slag (arsenic-calcium slag) has become a problem of high social concern.
At present, the main domestic methods for treating arsenic-containing gypsum slag (arsenic-calcium slag) comprise the following steps: stockpiling, cement curing, medicament curing, high-temperature reduction decomposition and the like. The stockpiling is the most common method for most enterprises at present, but the stockpiling has extremely high requirements on stockpiled slag yards and has quite large subsequent maintenance difficulty; the cement solidification can reduce the toxicity leaching of the waste residues to the range meeting the national toxicity leaching requirement, but the volume-increasing ratio is large, and the treated residues can not realize resource utilization; the adaptability of the agent curing is poor at present, experimental work is only carried out in a laboratory aiming at partial raw materials, and industrial application cannot be realized at present; the high-temperature reduction decomposition method has poor practical operability due to the fact that calcium arsenate is relatively stable. Therefore, the development of a new process for treating arsenic-containing gypsum slag (arsenic-calcium slag) which is safe, environment-friendly, economical and practical is urgently needed.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a safe, environment-friendly, economical and practical method for treating arsenic-containing gypsum slag by using a tin-smelting fuming furnace.
The technical scheme adopted by the invention is as follows:
a method for treating arsenic-containing gypsum slag by using a tin-smelting fuming furnace comprises the following steps:
s1: mixing the arsenic-containing gypsum slag and pyrite according to the proportion of 1: 1-5, uniformly mixing for later use;
s2: continuously adding tin middling into a tin smelting fuming furnace at a feeding speed of 10 t/h-20 t/h, and smelting at the temperature of 1100-1150 ℃;
s3: continuously adding the mixture of the arsenic-containing gypsum slag and the pyrite into a tin-smelting fuming furnace, heating to 1200-1300 ℃, and carrying out fuming volatilization reaction; CaSO in arsenic-containing gypsum slag4·2H2O is decomposed in weak reducing atmosphere to produce SO2Gas and CaO, SO2The gas participates in the sulfuration volatilization reaction of tin;CaO participates in slagging; ca in arsenic-containing gypsum slag3(AsO4)2Does not participate in the reaction, and the free arsenic is oxidized into As2O3Entering flue gas;
s4: discharging slag from a slag hole of the tin-smelting fuming furnace, and performing water quenching on the slag to obtain water-quenched slag;
s5: will contain As2O3Cooling the flue gas, collecting the cooled flue gas in smoke dust, roasting the smoke dust, and collecting to obtain As2O3。
The arsenic-containing gypsum residue contains 50-95 wt% of calcium sulfate, 0.1-10 wt% of arsenic and 5-40 wt% of water.
The amount of the arsenic-containing gypsum slag added is determined according to the slag type, and the silicate degree of the tin-making fuming slag is maintained to be 0.8-1.2.
In the invention, arsenic-containing gypsum slag is used as a vulcanizing agent and added into a fuming furnace, and CaSO in the arsenic-containing gypsum slag4·2H2O is decomposed in the weak reducing atmosphere in the furnace to produce SO2Gas and CaO, SO2The gas directly participates in the sulfuration volatilization reaction of the tin, and the conversion and utilization of the sulfur are realized. And (3) CaO participates in slagging, water quenching is carried out after slag is discharged to obtain water-quenched slag, and the water-quenched slag can be used for manufacturing novel building materials such as cement, baking-free bricks and the like. Calcium arsenate Ca in arsenic-containing gypsum slag3(AsO4)2Is very stable and does not participate in the reaction, free arsenic is oxidized into arsenic trioxide to enter the flue gas, and the arsenic trioxide is collected in the smoke dust after being cooled. The specific reaction formula is as follows:
the main component calcium sulfate of the arsenic-containing gypsum slag is reduced and decomposed into CaO and SO2：
CaSO4+CO＝CaO+SO2+CO2
Decomposition reaction and oxidation reaction of pyrite
FeS2(S)＝(FeS)+1/2S2
(FeS)+3/2O2＝(FeO)+SO2
Produced SO2The gas participates in the sulfuration volatilization reaction of tin
Sn+SO2+2CO＝SnS+2CO2
SnO+SO2+3CO＝SnS+3CO2
SnO2+SO2+4CO＝SnS+4CO2
Produced SO2The gas participates in the sulfuration volatilization reaction of lead
Pb+SO2+2CO＝PbS+2CO2
PbO+SO2+3CO＝PbS+3CO2
Oxidation and reduction reactions occur in the pyrometallurgical process, and slagging reactions also occur:
xCaO+ySiO2＝xCaO·ySiO2
xFeO+ySiO2＝xFeO·ySiO2
CaO+Fe2O3＝CaO·Fe2O3
the main components of the slag are FeO, CaO and SiO2All exist in the form of composite oxides, and are high-quality raw materials for producing cement.
The free arsenic reacts with oxygen at high temperature and volatilizes into flue gas, and is collected in the form of smoke dust after being cooled in a dust collector to form high-arsenic flue dust:
2As+1.5O2＝As2O3
after the high-arsenic smoke dust is roasted, arsenic can be separated from fuming dust produced by the fuming furnace, and the separated arsenic is As2O3The form is collected and sold, and the roasted smoke dust can be returned to a tin smelting system for smelting.
The invention has the following beneficial effects:
(1) the existing equipment of a smelting plant can be fully utilized, and the investment is reduced;
(2) the arsenic-containing gypsum slag is used as a vulcanizing agent of the fuming furnace, can partially replace pyrite, and reduces the production cost;
(3) SO produced by gypsum residue decomposition2The gas participates in the sulfuration volatilization reaction, which is beneficial to the recycling of sulfur;
(4) CaO produced by gypsum slag decomposition participates in slagging, and the slag can be used for manufacturing novel building materials such as cement, baking-free bricks and the like, and can also be used as general II-type industrial solid waste for stockpiling;
(5) the free arsenic in the gypsum slag is volatilized at high temperature to enter smoke dust, and is roasted to be As2O3Collecting;
(6) the sulfur-containing flue gas produced by the tin fuming furnace can be used for preparing acid by using an existing acid preparation system of a smelting plant.
The invention effectively realizes the comprehensive recycling of the arsenic-containing gypsum slag, promotes the arsenic-containing gypsum slag to be converted from hazardous waste to general II-type industrial solid waste, and simultaneously obtains a water-quenched slag product with certain economic value. The method is simple, easy to operate, safe and environment-friendly, provides an effective way for treating the arsenic-containing gypsum slag, and has wide application prospect.
Drawings
FIG. 1 is a process flow diagram of the method of the present invention.
Detailed Description
A method for treating arsenic-containing gypsum slag by using a tin-smelting fuming furnace has a process flow as shown in figure 1, and comprises the following specific steps:
s1: mixing the arsenic-containing gypsum slag and pyrite according to the proportion of 1: 1-5, and taking the mixture as a vulcanizing agent for standby.
S2: the tin middling is continuously added into a tin smelting fuming furnace according to the feeding speed of 10 t/h-20 t/h, and smelting is carried out at the temperature of 1100-1150 ℃. The tin middlings refer to tin ores containing 1-10% of tin. The tin in the tin middling is volatilized into smoke dust through fuming, and the grade of the tin is improved.
S3: in the process of smelting tin middling, continuously adding a mixture of arsenic-containing gypsum slag and pyrite into a tin-smelting fuming furnace, heating to 1200-1300 ℃, and carrying out fuming volatilization reaction; CaSO in arsenic-containing gypsum slag4·2H2O is decomposed in weak reducing atmosphere to produce SO2Gas and CaO, SO2The gas participates in the sulfuration volatilization reaction of tin; CaO participates in slagging; ca in arsenic-containing gypsum slag3(AsO4)2Does not participate in the reaction, and the free arsenic is oxidized into As2O3Entering flue gas;
the main component of the arsenic-containing gypsum slag is sulfurCalcium carbonate (CaSO)4·2H2O), and heavy metal elements such As As and Pb, wherein As is mainly calcium arsenate Ca3(AsO4)2And free arsenic form. The arsenic-containing gypsum slag contains 50-95 wt% of calcium sulfate, 0.1-10 wt% of arsenic and 5-40 wt% of water. The adding amount of the arsenic-containing gypsum slag is determined according to the slag type, and the silicate degree of the tin-making fuming slag is maintained to be 0.8-1.2. At this silicate, the slag has a low viscosity and good fluidity, and SnS is easily volatilized from the slag.
S4: discharging slag from a slag hole of the tin-smelting fuming furnace, and performing water quenching on the slag to obtain water-quenched slag;
s5: will contain As2O3Cooling the flue gas, collecting the cooled flue gas in smoke dust, roasting the smoke dust, and collecting to obtain As2O3。
The invention relates to a tin smelting fuming furnace, which belongs to the equipment in the prior art.
Example 1
Adding arsenic-containing gypsum slag (the components of As 5-10%, Ca 20-30% and S10-15%) into a tin-smelting fuming furnace according to the ratio of sulfur in the slag to tin in materials in the fuming furnace being 1:4, carrying out vulcanization volatilization of tin, and obtaining slag-throwing components: 0.213% of Sn, 5.41% of Ca, 0.028% of As, 32.82% of Fe and 9.89% of Si, and the produced smoke comprises the following components: sn 51.16%, As 2.86%, and flue gas containing 10000-11000 mg/m of sulfur3And sending the sulfuric acid to an acid preparation system to produce sulfuric acid. The slag is used for manufacturing cement, the smoke dust directly returns to a tin smelting system, arsenic is removed in the form of arsenic trioxide after roasting, and the roasted smoke dust is smelted to produce a tin product. The sulfur in the arsenic-containing gypsum slag participates in the volatilization reaction of tin, and the arsenic volatilizes into the tin-containing smoke dust, so that the arsenic gypsum slag is recycled.
Example 2
Adding arsenic-containing gypsum slag (the components of As 5-10%, Ca 20-25% and S10-15%) into a tin-smelting fuming furnace according to the ratio of sulfur in the slag to tin in materials in the fuming furnace of 1:3.5, and carrying out vulcanization volatilization of tin, wherein the produced slag-throwing components are As follows: 0.222% of Sn, 6.4% of Ca, 0.024% of As, 37.83% of Fe, 10.89% of Si, and the produced smoke comprises the following components: 51.22% of Sn, 2.67% of As, 10000-11000 mg/m of sulfur contained in flue gas3And sending the sulfuric acid to an acid preparation system to produce sulfuric acid. The slag is used for manufacturing cement, the smoke dust directly returns to a tin smelting system, arsenic is removed in the form of arsenic trioxide after roasting, and the roasted smoke dust is smelted to produce a tin product. The sulfur in the arsenic-containing gypsum slag participates in the volatilization reaction of tin, and the arsenic volatilizes into the tin-containing smoke dust, so that the arsenic gypsum slag is recycled.
Example 3
Mixing arsenic-containing gypsum slag (the components of As 5-10%, Ca 20-25% and S10-15%) with pyrite, adding the mixture into a tin-smelting fuming furnace according to the ratio of sulfur to tin in the fuming furnace being 1:4, carrying out vulcanization volatilization on tin, and obtaining the slag-throwing components: 0.24% of Sn, 5.16% of Ca, 0.038% of As, 35.53% of Fe, 9.51% of Si, and the produced smoke comprises the following components: 50.21% of Sn, 1.84% of As, 10000-11000 mg/m of sulfur contained in flue gas3And sending the sulfuric acid to an acid preparation system to produce sulfuric acid. The slag is used for manufacturing cement, the smoke dust directly returns to a tin smelting system, arsenic is removed in the form of arsenic trioxide after roasting, and the roasted smoke dust is smelted to produce a tin product. The sulfur in the arsenic-containing gypsum slag participates in the volatilization reaction of tin, and arsenic volatilizes into tin-containing smoke dust, so that the arsenic-containing gypsum slag is recycled.
Effect analysis
The invention mixes tin middling, pyrite and arsenic-containing gypsum slag according to a certain proportion, continuously adds the mixture into a tin-smelting fuming furnace for smelting, and controls the atmosphere in the furnace and the temperature of a molten pool by adjusting air quantity, oxygen quantity, coal feeding quantity of a spray gun pulverized coal and the like. Smelting at 1100-1150 deg.c; and continuously adding the mixture of the arsenic-containing gypsum slag and the pyrite into a fuming furnace, heating to 1200-1300 ℃, and completing the decomposition of calcium sulfate in the arsenic-containing gypsum slag and iron sulfide in the pyrite. Production of CO and SO2Gas, tin oxide produced by melting tin middlings, CO and SO2Performing interactive reaction, volatilizing for 1.5-2 h, discharging and throwing slag from a slag hole, recovering waste heat of high-temperature flue gas, collecting dust and other SO2Mixing the flue gas, sending the mixture to acid making, circularly smelting, and discharging and throwing slag every 3-4 hours. Compared with the traditional treatment process, the method has the advantages of good environmental protection effect, high recovery efficiency, reduced limestone consumption in the smelting process, contribution to reduction of production cost and recoveryThe equipment adopts the original equipment to treat, does not need additional investment, efficiently treats waste residues, effectively prevents environmental pollution, saves energy, protects environment, and obtains benefits from the process of treating harmful substances.
The method has low consumption and high efficiency, realizes the recovery of arsenic, solves the problem of stockpiling of arsenic-containing gypsum slag, reduces the dosage of limestone in the smelting process, and provides a green, environment-friendly, economic and high-efficiency treatment method for harmless treatment of the arsenic-containing gypsum slag.
All percentages stated in the present invention are percentages by mass, unless otherwise stated.
Finally, the above embodiments and the accompanying drawings are only intended to illustrate the technical solution of the present invention and not to limit, and although the present invention has been described in detail by the above embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the present invention as defined by the claims.
Claims (3)
1. A method for treating arsenic-containing gypsum slag by using a tin-smelting fuming furnace is characterized by comprising the following steps:
s1: mixing the arsenic-containing gypsum slag and pyrite according to the proportion of 1: 1-5, uniformly mixing for later use;
s2: continuously adding tin middling into a tin smelting fuming furnace at a feeding speed of 10 t/h-20 t/h, and smelting at the temperature of 1100-1150 ℃;
s3: continuously adding the mixture of the arsenic-containing gypsum slag and the pyrite into a tin-smelting fuming furnace, heating to 1200-1300 ℃, and carrying out fuming volatilization reaction; CaSO in arsenic-containing gypsum slag4·2H2O is decomposed in weak reducing atmosphere to produce SO2Gas and CaO, SO2The gas participates in the sulfuration volatilization reaction of tin; CaO participates in slagging; ca in arsenic-containing gypsum slag3(AsO4)2Does not participate in the reaction, and the free arsenic is oxidized into As2O3Entering flue gas;
s4: discharging slag from a slag hole of the tin-smelting fuming furnace, and performing water quenching on the slag to obtain water-quenched slag;
s5: will contain As2O3Cooling the flue gas, collecting the cooled flue gas in smoke dust, roasting the smoke dust, and collecting to obtain As2O3。
2. The method for treating arsenic-containing gypsum slag by using the tin-smelting fuming furnace as claimed in claim 1, wherein the arsenic-containing gypsum slag contains 50-95 wt% of calcium sulfate, 0.1-10 wt% of arsenic and 5-40 wt% of water.
3. The method for treating arsenic-containing gypsum slag in a tin-making fuming furnace as claimed in claim 1, wherein the amount of the arsenic-containing gypsum slag added is determined according to the slag type, and the silicate degree of the tin-making fuming slag is maintained at 0.8-1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111129114.2A CN113860365B (en) | 2021-09-26 | 2021-09-26 | Method for treating arsenic-containing gypsum slag by using tin-smelting fuming furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111129114.2A CN113860365B (en) | 2021-09-26 | 2021-09-26 | Method for treating arsenic-containing gypsum slag by using tin-smelting fuming furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113860365A true CN113860365A (en) | 2021-12-31 |
| CN113860365B CN113860365B (en) | 2023-03-07 |
Family
ID=78994414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111129114.2A Active CN113860365B (en) | 2021-09-26 | 2021-09-26 | Method for treating arsenic-containing gypsum slag by using tin-smelting fuming furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113860365B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115418476A (en) * | 2022-07-26 | 2022-12-02 | 株洲精卓科技有限公司 | Method for treating low-manganese ore containing tin and product thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10236825A (en) * | 1997-02-28 | 1998-09-08 | Nikko Kinzoku Kk | Production of calcium arsenate fro smelting dust |
| CN102249609A (en) * | 2011-04-29 | 2011-11-23 | 昆明理工大学 | Arsenic-containing waste slag solidified body and preparation method thereof |
| CN106282584A (en) * | 2015-06-02 | 2017-01-04 | 云南锡业集团有限责任公司研究设计院 | A kind of method of complicated high-arsenic-containing copper smelting flue dust valuable metal recovery |
| CN109052331A (en) * | 2018-08-22 | 2018-12-21 | 湖南锐异资环科技有限公司 | Recycling method of arsenic-containing gypsum slag |
| CN109231859A (en) * | 2018-11-05 | 2019-01-18 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | A method of the recycling treatment of waste desulfurized gypsum residue containing arsenic |
| CN109913659A (en) * | 2019-02-27 | 2019-06-21 | 郴州钖涛环保科技有限公司 | A kind of method of antimony smelting arsenic alkali slag and flue gas during smelting comprehensive treatment |
-
2021
- 2021-09-26 CN CN202111129114.2A patent/CN113860365B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10236825A (en) * | 1997-02-28 | 1998-09-08 | Nikko Kinzoku Kk | Production of calcium arsenate fro smelting dust |
| CN102249609A (en) * | 2011-04-29 | 2011-11-23 | 昆明理工大学 | Arsenic-containing waste slag solidified body and preparation method thereof |
| CN106282584A (en) * | 2015-06-02 | 2017-01-04 | 云南锡业集团有限责任公司研究设计院 | A kind of method of complicated high-arsenic-containing copper smelting flue dust valuable metal recovery |
| CN109052331A (en) * | 2018-08-22 | 2018-12-21 | 湖南锐异资环科技有限公司 | Recycling method of arsenic-containing gypsum slag |
| CN109231859A (en) * | 2018-11-05 | 2019-01-18 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | A method of the recycling treatment of waste desulfurized gypsum residue containing arsenic |
| CN109913659A (en) * | 2019-02-27 | 2019-06-21 | 郴州钖涛环保科技有限公司 | A kind of method of antimony smelting arsenic alkali slag and flue gas during smelting comprehensive treatment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115418476A (en) * | 2022-07-26 | 2022-12-02 | 株洲精卓科技有限公司 | Method for treating low-manganese ore containing tin and product thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113860365B (en) | 2023-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103421955B (en) | Zinc leaching slag treatment method | |
| CN112322902B (en) | Resource recovery method of copper smelting slag | |
| CN102965510B (en) | Reduction sulfur-fixing bath smelting method and device of low-sulfur lead-containing secondary material and iron-rich heavy metal solid waste | |
| CN112795776B (en) | Method for co-processing waste incineration fly ash and copper-containing sludge | |
| CN102268557A (en) | One-step oxidizing smelting, retailoring and slag fuming volatilization method for lead sulphide concentrate | |
| CN103388081A (en) | Bath smelting method and apparatus of zinc sulfide concentrate and lead-zinc containing materials | |
| CN102433448A (en) | Smelting method of antimony-zinc-lead-containing concentrate | |
| CN102965509A (en) | Method and device for treating daub and iron-rich heavy metal solid waste of waste lead-acid storage battery | |
| CN106048248B (en) | The method for handling incineration of refuse flyash | |
| CN108456790B (en) | Extraction method of antimony metal | |
| CN108315559B (en) | A kind of method of steel plant's Zinc-Bearing Wastes separation of Zinc | |
| CN101985695B (en) | Method for processing zinc leaching residues at high proportion by using oxygen bottom blown furnace | |
| CN101871725A (en) | Horizontal bottom blowing type molten pool desulphurizing furnace and oxidative desulphurization method for leaded materials | |
| CN111893310A (en) | Harmless recycling treatment method for solid hazardous waste | |
| CN101705366A (en) | Direct lead smelting method for processing zinc smelting slag by matching | |
| CN110669942A (en) | Method for treating zinc-containing dust in steel plant | |
| CN108504872B (en) | Method for comprehensively treating white smoke dust and arsenic sulfide slag | |
| CN113860365B (en) | Method for treating arsenic-containing gypsum slag by using tin-smelting fuming furnace | |
| CN103990634B (en) | Recovery method for electronic waste and waste lead-acid cells | |
| CN111286628A (en) | Comprehensive recovery method using zinc volatilization kiln slag as fuel | |
| CN104388980A (en) | Method for extracting gold from difficultly treated gold ore | |
| CN114438323B (en) | Environment-friendly harmless treatment method for iron slag, cobalt slag, lead slag and sulfur tailings | |
| CN106048249B (en) | The method for handling incineration of refuse flyash | |
| CN108950236A (en) | A kind of technique of clean and effective processing lead containing sludge | |
| CN104831076A (en) | Resource recycling process of solid waste calcium sulfate |
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 |