CN111363915A - Method for treating SDS (sodium dodecyl sulfate) desulfurization waste residue - Google Patents
Method for treating SDS (sodium dodecyl sulfate) desulfurization waste residue Download PDFInfo
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- CN111363915A CN111363915A CN202010282633.1A CN202010282633A CN111363915A CN 111363915 A CN111363915 A CN 111363915A CN 202010282633 A CN202010282633 A CN 202010282633A CN 111363915 A CN111363915 A CN 111363915A
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- waste residue
- sds
- desulfurization waste
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- pellets
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
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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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- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for treating SDS (sodium dodecyl sulfate) desulfurization waste residue. According to the invention, the SDS desulfurization waste residue is reasonably proportioned with blast furnace ash and water to be prepared into pellets, and then the pellets are sintered together with the sinter, so that favorable conditions can be provided for reaction in the sintering oxidation process by using the SDS desulfurization waste residue, the structure of the sinter is improved, the yield of the sinter is increased, the SDS desulfurization waste residue is effectively recycled, and the pollution to the environment caused by landfill is avoided.
Description
Technical Field
The invention relates to the technical field of desulfurization and environmental protection, in particular to a method for treating SDS desulfurization waste residue.
Background
The SDS desulfurization technology is to remove SO in the coke oven flue gas2The SDS desulfurization technology adopts sodium bicarbonate dry powder as a desulfurizing agent, and the desulfurized waste residue mainly contains sodium sulfate and a small amount of sodium sulfite. In the existing recycling process of the desulfurized waste residue, the SDS desulfurized waste residue is usually recycled and then used for preparing the cement additive, but due to the problem of coke oven blowby in the desulfurization process, coal powder or coal gas can be incompletely combusted, so that the powdered carbon can be mixed into the SDS desulfurized waste residue, the quality of the SDS desulfurized waste residue cannot meet the preparation requirement of the cement additive, and the SDS desulfurized waste residue can only be subjected to landfill treatment and can pollute the environment.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a method for treating SDS desulfurization waste residue, which can recycle the SDS desulfurization waste residue and avoid environmental pollution.
In order to solve the technical problems, the invention adopts the technical scheme that: the method for treating the SDS desulfurization waste residue comprises the steps of mixing the SDS desulfurization waste residue, blast furnace ash and water, preparing pellets and sintering the pellets together with sinter.
Further, the method comprises the following steps: the method comprises the following steps:
a. and (3) mixing the SDS desulfurization waste residue, blast furnace dust and water according to the proportion of 70-75%: 20-30%: 5 percent of the weight ratio is proportioned;
b. sequentially putting the SDS desulfurized waste residue, blast furnace dust and water which are subjected to proportioning into a dust bin for mixing;
c. feeding the mixed materials into a disc pelletizer for pelletizing;
d. the pellets are sent into a sintering machine to be sintered together with the sinter.
Further, the method comprises the following steps: the content of sodium sulfate in the SDS desulfurization waste residue is 70-90%, and the content of sodium sulfite is less than 10%.
Further, the method comprises the following steps: the zinc content of the blast furnace dust in step a is less than 5%.
Further, the method comprises the following steps: and c, pelletizing in the step c to obtain pellets with the particle size of 5-10 mm.
The invention has the beneficial effects that: according to the invention, the SDS desulfurization waste residue is reasonably proportioned with blast furnace ash and water to be prepared into pellets, and then the pellets are sintered together with the sinter, so that favorable conditions can be provided for reaction in the sintering oxidation process by using the SDS desulfurization waste residue, the structure of the sinter is improved, the yield of the sinter is increased, the SDS desulfurization waste residue is effectively recycled, and the pollution to the environment caused by landfill is avoided.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be further described with reference to the following examples.
According to the method for treating the SDS desulfurization waste residue, the blast furnace ash and the water are mixed to prepare pellets, the pellets are sintered together with the sinter, and the structure of the sinter is improved by using the SDS desulfurization waste residue, so that the effect of improving the yield of the sinter is achieved.
When the method for treating the SDS desulfurization waste residue is used for modifying the sinter, the method comprises the following steps:
step one, mixing SDS desulfurization waste residue, blast furnace dust and water according to 70-75%: 20-30%: 5 percent of the weight ratio is proportioned, the content of sodium sulfate in the SDS desulfurization waste residue adopted in the step is 70-90 percent, the content of sodium sulfite is less than 10 percent, and the content of zinc in blast furnace ash is less than 5 percent;
step two, putting the SDS desulfurized waste residue after the batching, blast furnace dust and water into an ash bin in sequence for mixing;
thirdly, feeding the mixed materials into a disc pelletizer for pelletizing, wherein the particle size of the pellets is 5-10 mm;
and step four, conveying the pellets into a sintering machine to be sintered together with the sintered ore.
Example 1
The embodiment provides a method for treating SDS desulfurization waste residue, which comprises the following steps:
(1) screening the SDS desulfurization waste residue, and selecting the SDS desulfurization waste residue with the sodium sulfate content of 70-90% and the sodium sulfite content of less than 10%;
(2) mixing SDS desulfurized waste residue, blast furnace ash and water according to the proportion of 70%: 25%: 5 percent of the raw materials are mixed according to the weight ratio and then are sequentially put into an ash bin for mixing;
(3) feeding the mixed materials into a disc pelletizer for pelletizing, and selecting pellets with the particle size of 6-8 mm;
(4) feeding the selected pellets into a sintering machine to be sintered together with sinter;
(5) the sintered ore samples are detected, the vertical sintering speed and utilization coefficient of the sintered ore samples are respectively increased by 2.85 percent and 2.75 percent, the sintered ore yield and the drum strength are respectively increased by 0.11 percent and 0.39 percent, the abrasion resistance index is slightly increased, the grain size composition of the sintered ore is improved, the average grain size is increased by 1.51 percent, and the technical indexes of the sintered ore are improved.
Example 2
The embodiment provides a method for treating SDS desulfurization waste residue, which comprises the following steps:
(1) screening the SDS desulfurization waste residue, and selecting the SDS desulfurization waste residue with the sodium sulfate content of 70-90% and the sodium sulfite content of less than 10%;
(2) mixing the SDS desulfurization waste residue, blast furnace dust and water according to the proportion of 75%: 23%: 2 percent of the raw materials are mixed according to the weight ratio and then are sequentially put into an ash bin for mixing;
(3) feeding the mixed materials into a disc pelletizer for pelletizing, and selecting pellets with the particle size of 5-10 mm;
(4) feeding the selected pellets into a sintering machine to be sintered together with sinter;
(5) the sintered ore samples are detected, the vertical sintering speed and utilization coefficient of the sintered ore samples are respectively increased by 2.51 percent and 2.08 percent, the sintered ore yield and the drum strength are respectively increased by 0.09 percent and 0.33 percent, the abrasion resistance index is slightly increased, the grain size composition of the sintered ore is improved, the average grain size is increased by 1.83 percent, and the technical indexes of the sintered ore are improved.
Claims (5)
- The method for treating the SDS desulfurization waste residue is characterized by comprising the following steps: mixing the SDS desulfurization waste residue, blast furnace ash and water to prepare pellets, and sintering the pellets together with sinter.
- 2. The method for treating SDS-desulfurized waste residue according to claim 1, wherein: the method comprises the following steps:a. and (3) mixing the SDS desulfurization waste residue, blast furnace dust and water according to the proportion of 70-75%: 20-30%: 5 percent of the weight ratio is proportioned;b. sequentially putting the SDS desulfurized waste residue, blast furnace dust and water which are subjected to proportioning into a dust bin for mixing;c. feeding the mixed materials into a disc pelletizer for pelletizing;d. the pellets are sent into a sintering machine to be sintered together with the sinter.
- 3. The method for treating SDS-desulfurized waste residue according to claim 1, wherein: the content of sodium sulfate in the SDS desulfurization waste residue is 70-90%, and the content of sodium sulfite is less than 10%.
- 4. The method for treating SDS-desulfurized waste residue according to claim 2, wherein: the zinc content of the blast furnace dust in step a is less than 5%.
- 5. The method for treating SDS-desulfurized waste residue according to claim 2, wherein: and c, pelletizing in the step c to obtain pellets with the particle size of 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010282633.1A CN111363915A (en) | 2020-04-08 | 2020-04-08 | Method for treating SDS (sodium dodecyl sulfate) desulfurization waste residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010282633.1A CN111363915A (en) | 2020-04-08 | 2020-04-08 | Method for treating SDS (sodium dodecyl sulfate) desulfurization waste residue |
Publications (1)
| Publication Number | Publication Date |
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| CN111363915A true CN111363915A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010282633.1A Pending CN111363915A (en) | 2020-04-08 | 2020-04-08 | Method for treating SDS (sodium dodecyl sulfate) desulfurization waste residue |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132901A (en) * | 2021-11-17 | 2022-03-04 | 重庆长能环境科技有限公司 | Method for preparing sodium sulfide from SDS desulfurization slag and product thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6039113A (en) * | 1983-08-10 | 1985-02-28 | Nippon Steel Corp | Treatment of desulfurization slag |
| KR20120115788A (en) * | 2011-04-11 | 2012-10-19 | 주식회사 포스코 | Method for manufacturing sintered ore by using desulfurization dust and sintered ore thereof |
| CN103627893A (en) * | 2012-08-28 | 2014-03-12 | 上海梅山钢铁股份有限公司 | Method for preparing agglomerate by using calcium process, dry process and semidry process flue gas desulphurization ash |
| CN104232885A (en) * | 2014-09-28 | 2014-12-24 | 四川德胜集团钒钛有限公司 | Method for blending ore of vanadium-titanium sintered ore |
| CN104313308A (en) * | 2014-11-21 | 2015-01-28 | 攀钢集团攀枝花钢钒有限公司 | Iron ore low-carbon sintering method |
| CN105274329A (en) * | 2015-10-05 | 2016-01-27 | 杭州碧清环保科技有限公司 | Pellet manufactured through multiple metal smelting waste and preparing method of pellet |
| CN108796215A (en) * | 2018-06-25 | 2018-11-13 | 中南大学 | A kind of processing method of discarded desulfurizing agent |
| CN110937579A (en) * | 2019-12-13 | 2020-03-31 | 西安润川环保科技有限公司 | Method for recovering waste desulfurizer |
-
2020
- 2020-04-08 CN CN202010282633.1A patent/CN111363915A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6039113A (en) * | 1983-08-10 | 1985-02-28 | Nippon Steel Corp | Treatment of desulfurization slag |
| KR20120115788A (en) * | 2011-04-11 | 2012-10-19 | 주식회사 포스코 | Method for manufacturing sintered ore by using desulfurization dust and sintered ore thereof |
| CN103627893A (en) * | 2012-08-28 | 2014-03-12 | 上海梅山钢铁股份有限公司 | Method for preparing agglomerate by using calcium process, dry process and semidry process flue gas desulphurization ash |
| CN104232885A (en) * | 2014-09-28 | 2014-12-24 | 四川德胜集团钒钛有限公司 | Method for blending ore of vanadium-titanium sintered ore |
| CN104313308A (en) * | 2014-11-21 | 2015-01-28 | 攀钢集团攀枝花钢钒有限公司 | Iron ore low-carbon sintering method |
| CN105274329A (en) * | 2015-10-05 | 2016-01-27 | 杭州碧清环保科技有限公司 | Pellet manufactured through multiple metal smelting waste and preparing method of pellet |
| CN108796215A (en) * | 2018-06-25 | 2018-11-13 | 中南大学 | A kind of processing method of discarded desulfurizing agent |
| CN110937579A (en) * | 2019-12-13 | 2020-03-31 | 西安润川环保科技有限公司 | Method for recovering waste desulfurizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132901A (en) * | 2021-11-17 | 2022-03-04 | 重庆长能环境科技有限公司 | Method for preparing sodium sulfide from SDS desulfurization slag and product thereof |
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