CN107034361A - A kind of Application way of dedusting ash of stainless steel - Google Patents
A kind of Application way of dedusting ash of stainless steel Download PDFInfo
- Publication number
- CN107034361A CN107034361A CN201710264871.8A CN201710264871A CN107034361A CN 107034361 A CN107034361 A CN 107034361A CN 201710264871 A CN201710264871 A CN 201710264871A CN 107034361 A CN107034361 A CN 107034361A
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- CN
- China
- Prior art keywords
- stainless steel
- dedusting ash
- pressure ball
- ball
- dedusting
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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
-
- 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
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
-
- 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
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
-
- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of Application way of dedusting ash of stainless steel.Dedusting ash of stainless steel and binding agent are 1 in mass ratio：0.06 ~ 0.13 ratio is stirred and evenly mixed, and binding agent is based on starch, equipped with a small amount of magnesium chloride.Then through extruding roll-in ball machine balling-up twice, pressure ball mean compressive strength is more than 1600N/, and powder rate is less than 13%.Dedusting ash of stainless steel pressure ball is reduced the oxide of nickel, chromium and iron in dedusting ash of stainless steel pressure ball using the reducing agent in electric furnace raw material, realizes the recovery of iron, chromium, nickel with utilization in the electric furnace of smelting stainless steel is added in.It need not fetch water and clear up before the method that the present invention is provided, dedusting ash of stainless steel pressure ball, pressure ball intensity is high, is not pulverized easily；Dedusting ash of stainless steel freezes off pressure ball and returns electric furnace using technological process is short, economic benefit is higher.
Description
Technical field
The present invention relates to a kind of Application way of dedusting ash of stainless steel, belong to comprehensive utilization of resources field.
Background technology
Dedusting ash of stainless steel is the byproduct that iron and steel enterprise produces, due to containing substantial amounts of chromium, nickel in dedusting ash of stainless steel
The precious metals such as iron, recycle value higher.Dedusting ash of stainless steel is powdered, needs just enter stove smelting recovery chromium after pressure ball
The metals such as ferronickel, but cleared up due to containing to need to fetch water before calcium oxide, pressure ball in dedusting ash of stainless steel, also easy efflorescence, intensity after pressure ball
Low, powder rate is high.
The content of the invention
The present invention is intended to provide a kind of dedusting ash of stainless steel freezes off the utilization side that pressure ball returns electric furnace smelting short route without clearing up
Method.The present invention solves dedusting ash of stainless steel due to the technical barrier of the easy efflorescence of calcium oxide content smash not easy-formation, improves
Dedusting ash of stainless steel pressure ball intensity, reduces dedusting ash of stainless steel pressure ball powder rate, improves chromium ferronickel in dedusting ash of stainless steel
Deng metal recovery rate.
The invention provides a kind of Application way of dedusting ash of stainless steel, comprise the following steps：
（1）Dedusting ash of stainless steel and binding agent are 1 in mass ratio：0.06 ~ 0.13 ratio is stirred and evenly mixed, and the binding agent includes
Starch and magnesium chloride；
（2）Through to extrusion forming of roll-in ball machine, pressure is 13-20MPa, obtains one-shot forming material；
（3）One-shot forming material to roll-in ball machine secondary extrusion again through being molded, and pressure is 14-20MPa, is exported through belt to square hole
Sieve, the length of side is 20mm sieve aperture, and screening obtains finished product dedusting ash of stainless steel pressure ball；
（4）After natural curing one day, dedusting ash of stainless steel pressure ball mean compressive strength is more than 1600N/（Appointing takes 10 balls to be surveyed
The average value of compression strength）, powder rate is less than 13%；
（5）Dedusting ash of stainless steel pressure ball adds the electric furnace of smelting stainless steel by high hopper or alloy feed bin or other manner
In, per stove with addition of a certain amount of dedusting ash of stainless steel pressure ball, using carbon contained in the electric furnace raw material chromium nickel pig iron, Si reduction agent also
The oxide of nickel, chromium and iron, realizes the recovery of iron, chromium, nickel in former dedusting ash of stainless steel pressure ball.
In the above method, in the binding agent, the quality proportioning of starch and magnesium chloride is：Based on starch, with addition of 18-
30% magnesium chloride.The quality proportioning of starch and magnesium chloride is：70~82%：18-30%.
The assay method of above-mentioned powder rate is：20kg samples are weighed at random, are fallen on from 2 meters of eminences on steel plate, fall 3 times altogether, so
Aperture 10mm round-hole mesh is used afterwards, and screening accounts for the ratio between gross weight as powder rate less than 10mm weight.
Beneficial effects of the present invention：
It need not fetch water and clear up before dedusting ash of stainless steel pressure ball, pressure ball intensity is high, is not pulverized easily；Dedusting ash of stainless steel freezes off pressure ball
Electric furnace is returned using technological process is short, economic benefit is higher.
Embodiment
The present invention is further illustrated below by embodiment, but is not limited to following examples.
Embodiment 1：
（1）Dedusting ash of stainless steel and binding agent first are weighed by proportioning, dedusting ash of stainless steel 5000kg, binding agent 400kg, stirring are mixed
It is even；
（2）Through to extrusion forming of roll-in ball machine, pressure 15MPa obtains one-shot forming material.
（3）One-shot forming material to roll-in ball machine secondary extrusion again through being molded, and pressure is 19MPa, is exported through belt to the length of side
For 20mm square hole screen, screening obtains finished product dedusting ash of stainless steel pressure ball.
（4）Maintenance detects the compression strength and powder rate of dedusting ash of stainless steel pressure ball after one day.
The assay method of the compression strength of dedusting ash of stainless steel pressure ball：Appoint the average value for taking 10 balls to measure compression strength；
Test data is shown in Table 1.
The assay method of the powder rate of dedusting ash of stainless steel pressure ball：20kg samples are weighed at random, steel plate is fallen on from 2 meters of eminences
On, fall altogether 3 times, then with aperture 10mm round-hole mesh, screening, it is powder rate to account for the ratio between gross weight less than 10mm weight.Through surveying
Measure：Powder rate is 11%.
The compression strength of table 1 detects data
In dedusting ash of stainless steel pressure ball obtained by the present embodiment, the electric furnace that 180 tons of smelting stainless steels are added by high hopper, per stove
With addition of 5 tons of dedusting ash of stainless steel pressure ball, nickel, chromium and iron in the reducing agent reduction dedusting ash of stainless steel pressure ball in electric furnace raw material are utilized
Oxide, realize the recovery of iron, chromium, nickel, pass through calculate, iron yield 98%, nickel recovery rate 98%, chromium recovery rate 80%.
Embodiment 2：
（1）Dedusting ash of stainless steel and binding agent first are weighed by proportioning, dedusting ash of stainless steel 6000kg, binding agent 600kg, stirring are mixed
It is even；
（2）Through to extrusion forming of roll-in ball machine, pressure is 17MPa, obtains one-shot forming material.
（3）One-shot forming material to roll-in ball machine secondary extrusion again through being molded, and pressure is 20MPa, is exported through belt to the length of side
For 20mm square hole screen, screening obtains finished product dedusting ash of stainless steel pressure ball.
（4）Maintenance detects stainless grey pressure ball intensity and powder rate after one day：
The assay method of the compression strength of dedusting ash of stainless steel pressure ball：Appoint the average value for taking 10 balls to measure compression strength；Test
Data are shown in Table 2.
The assay method of the powder rate of dedusting ash of stainless steel pressure ball：20kg samples are weighed at random, steel plate is fallen on from 2 meters of eminences
On, fall altogether 3 times, then with aperture 10mm round-hole mesh, screening, it is powder rate to account for the ratio between gross weight less than 10mm weight.Through surveying
Measure：Powder rate is 11%.
The compression strength of table 2 detects data
In dedusting ash of stainless steel pressure ball obtained by the present embodiment, the electric furnace that 180 tons of smelting stainless steels are added by high hopper, per stove
With addition of 6 tons of dedusting ash of stainless steel pressure ball, nickel, chromium and iron in the reducing agent reduction dedusting ash of stainless steel pressure ball in electric furnace raw material are utilized
Oxide, realize the recovery of iron, chromium, nickel, pass through calculate, iron yield 98.3%, nickel recovery rate 99%, chromium recovery rate 79%.
Claims (5)
1. a kind of Application way of dedusting ash of stainless steel, it is characterised in that comprise the following steps：
（1）Dedusting ash of stainless steel and binding agent are 1 in mass ratio：0.06 ~ 0.13 ratio is stirred and evenly mixed, and the binding agent includes
Starch and magnesium chloride；
（2）Through to extrusion forming of roll-in ball machine, pressure is 13-20MPa, obtains one-shot forming material；
（3）One-shot forming material to roll-in ball machine secondary extrusion again through being molded, and pressure is 14-20MPa, is exported through belt to the hole length of side
For 20mm square hole screen, screening obtains finished product dedusting ash of stainless steel pressure ball；
（4）Dedusting ash of stainless steel pressure ball adds the electric furnace of smelting stainless steel by high hopper or alloy feed bin or other manner
In, per stove with addition of a certain amount of dedusting ash of stainless steel pressure ball, dedusting ash of stainless steel pressure is reduced using the reducing agent in electric furnace raw material
The oxide of nickel, chromium and iron in ball, realizes the recovery of iron, chromium, nickel.
2. the Application way of dedusting ash of stainless steel according to claim 1, it is characterised in that：In the binding agent, starch
Quality proportioning with magnesium chloride is：Starch：70 ~ 82%, magnesium chloride：18-30%.
3. the Application way of dedusting ash of stainless steel according to claim 1, it is characterised in that：Gained finished product stainless steel dedusting
Grey pressure ball, after natural curing one day, dedusting ash of stainless steel pressure ball mean compressive strength is more than 1600N/, and powder rate is less than 13%.
4. the Application way of dedusting ash of stainless steel according to claim 3, it is characterised in that：The mean compressive strength
Assay method is：Appoint the average value for taking 10 dedusting ash of stainless steel pressure balls to test its compression strength.
5. the Application way of dedusting ash of stainless steel according to claim 3, it is characterised in that：The assay method of the powder rate
For：20kg samples are weighed at random, are fallen on from 2 meters of eminences on steel plate, are fallen altogether 3 times, then with aperture 10mm round-hole mesh, screening,
It is powder rate to account for the ratio between gross weight less than 10mm weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710264871.8A CN107034361B (en) | 2017-04-21 | 2017-04-21 | A kind of utilization method of dedusting ash of stainless steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710264871.8A CN107034361B (en) | 2017-04-21 | 2017-04-21 | A kind of utilization method of dedusting ash of stainless steel |
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| Publication Number | Publication Date |
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| CN107034361A true CN107034361A (en) | 2017-08-11 |
| CN107034361B CN107034361B (en) | 2018-07-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616323A (en) * | 2019-07-31 | 2019-12-27 | 华北理工大学 | Method for producing alloy blocks and mineral wool from blast furnace cloth bag dust removal ash and fly ash |
| CN112981095A (en) * | 2021-02-08 | 2021-06-18 | 山西太钢不锈钢股份有限公司 | Iron scale ball pressing process |
| CN113174483A (en) * | 2021-03-31 | 2021-07-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for recycling stainless steel nickel and chromium dust |
| CN114525402A (en) * | 2022-04-22 | 2022-05-24 | 唐山金沙燃烧热能股份有限公司 | Preparation method and application of blast furnace sintering-free cold-bonded pellet |
| CN116043012A (en) * | 2023-04-03 | 2023-05-02 | 唐山金沙燃烧热能股份有限公司 | Sintering-free cold-bonded pellet for blast furnace and binder |
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| CN101270410A (en) * | 2007-03-20 | 2008-09-24 | 尚国洪 | Cold bonded pellet and method of producing the same |
| CN100485071C (en) * | 2007-06-09 | 2009-05-06 | 山西太钢不锈钢股份有限公司 | Electric furnace smelting recovery method for chronium-nickel alloy element in stainless steel dedusting ash |
| CN101705333B (en) * | 2009-11-28 | 2011-12-28 | 山西太钢不锈钢股份有限公司 | Reduction and utilization method of dedusting ash of stainless steel |
| CN103290227A (en) * | 2013-06-20 | 2013-09-11 | 嘉峪关大友企业公司 | Preparation method of nickel-chromium cast iron with stainless steel dedusting ash as raw material |
| CN104046773B (en) * | 2014-06-25 | 2016-03-23 | 重庆科健冶金材料有限公司 | A kind of dedusting steel-smelting converter ash produces cooled agglomerated pellet processing method |
| CN104313314B (en) * | 2014-10-27 | 2016-03-30 | 山西太钢不锈钢股份有限公司 | A kind of manufacture method of converter dust-removing ash pressure ball |
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- 2017-04-21 CN CN201710264871.8A patent/CN107034361B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616323A (en) * | 2019-07-31 | 2019-12-27 | 华北理工大学 | Method for producing alloy blocks and mineral wool from blast furnace cloth bag dust removal ash and fly ash |
| CN112981095A (en) * | 2021-02-08 | 2021-06-18 | 山西太钢不锈钢股份有限公司 | Iron scale ball pressing process |
| CN113174483A (en) * | 2021-03-31 | 2021-07-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for recycling stainless steel nickel and chromium dust |
| CN113174483B (en) * | 2021-03-31 | 2022-10-25 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for recycling stainless steel nickel and chromium dust |
| CN114525402A (en) * | 2022-04-22 | 2022-05-24 | 唐山金沙燃烧热能股份有限公司 | Preparation method and application of blast furnace sintering-free cold-bonded pellet |
| CN116043012A (en) * | 2023-04-03 | 2023-05-02 | 唐山金沙燃烧热能股份有限公司 | Sintering-free cold-bonded pellet for blast furnace and binder |
| CN116043012B (en) * | 2023-04-03 | 2023-06-02 | 唐山金沙燃烧热能股份有限公司 | Sintering-free cold-bonded pellet for blast furnace and binder |
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| CN107034361B (en) | 2018-07-17 |
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Effective date of registration: 20190809 Address after: 030003, Shanxi, Taiyuan, pointed lawn area, lawn street, No. 2 Co-patentee after: No. Second Metallic Structure Plant of Taiyuan Steel City Enterprise Co., Ltd. Patentee after: Shanxi Taigang Stainless Steel Co., Ltd. Address before: 030003, Shanxi, Taiyuan, pointed lawn area, lawn street, No. 2 Patentee before: Shanxi Taigang Stainless Steel Co., Ltd. |
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