CN107034361B - A kind of utilization method of dedusting ash of stainless steel - Google Patents
A kind of utilization method of dedusting ash of stainless steel Download PDFInfo
- Publication number
- CN107034361B CN107034361B CN201710264871.8A CN201710264871A CN107034361B CN 107034361 B CN107034361 B CN 107034361B CN 201710264871 A CN201710264871 A CN 201710264871A CN 107034361 B CN107034361 B CN 107034361B
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- dedusting ash
- pressure ball
- ball
- dedusting
- 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.)
- Active
Links
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
- C22B7/02—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
Landscapes
- 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 utilization methods of dedusting ash of stainless steel.Dedusting ash of stainless steel and binder are 1 in mass ratio：0.06 ~ 0.13 ratio stirs and evenly mixs, and binder is furnished with a small amount of magnesium chloride based on starch.Then balling-up is squeezed twice through two pairs of rollers ball press, pressure ball mean compressive strength is more than 1600N/, and powder rate is less than 13%.Dedusting ash of stainless steel pressure ball, which matches to be added in the electric furnace of smelting stainless steel, to be utilized, and using the oxide of nickel, chromium and iron in the reducing agent reduction dedusting ash of stainless steel pressure ball in electric furnace raw material, realizes the recycling of iron, chromium, nickel.Method provided by the invention, need not fetch water before dedusting ash of stainless steel pressure ball resolution, and 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 utilization methods 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 generates, due to containing a large amount of chromium, nickel in dedusting ash of stainless steel
It is higher to recycle value for the precious metals such as iron.Dedusting ash of stainless steel is powdered, can just enter stove smelting recycling chromium after needing pressure ball
The metals such as ferronickel, but resolution of fetching water is needed due to containing calcium oxide in dedusting ash of stainless steel, before pressure ball, also easy dusting after pressure ball, intensity
Low, powder rate is high.
Invention content
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 resolution
Method.The present invention solves dedusting ash of stainless steel since the easy dusting of calcium oxide content smash is not easy molding technical barrier, 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
Equal metal recovery rates.
The present invention provides a kind of utilization methods of dedusting ash of stainless steel, include the following steps：
（1）Dedusting ash of stainless steel and binder are 1 in mass ratio：0.06 ~ 0.13 ratio stirs and evenly mixs, the binder
Including starch and magnesium chloride；
（2）Through extrusion forming of two pairs of rollers ball press, pressure 13-20MPa obtains one-pass molding material；
（3）One-pass molding material is molded through two pairs of rollers ball press secondary extrusion again, and pressure 14-20MPa is exported through belt to side
Hole sizer, the length of side are the sieve pore of 20mm, 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/（Appoint and takes 10 balls
The average value of surveyed compression strength）, powder rate is less than 13%；
（5）The electricity of smelting stainless steel is added by high hopper or alloy feed bin or other means for dedusting ash of stainless steel pressure ball
In stove, per stove with addition of a certain amount of dedusting ash of stainless steel pressure ball, carbon, Si reduction agent contained in the electric furnace raw material chromium nickel pig iron are utilized
The oxide of nickel, chromium and iron in dedusting ash of stainless steel pressure ball is restored, realizes the recycling of iron, chromium, nickel.
In the above method, in the binder, 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 steel plate from 2 meters of eminences, fall 3 times altogether, so
The round-hole mesh of aperture 10mm is used afterwards, and screening, it is powder rate to account for the ratio between total weight less than 10mm weight.
Beneficial effects of the present invention：
Need not fetch water resolution before dedusting ash of stainless steel pressure ball, and pressure ball intensity is high, is not pulverized easily；Dedusting ash of stainless steel freezes off
Pressure ball returns electric furnace using technological process is short, economic benefit is higher.
Specific implementation mode
It is further illustrated the present invention below by embodiment, but is not limited to following embodiment.
Embodiment 1：
（1）It first weighs dedusting ash of stainless steel according to the ratio and binder, dedusting ash of stainless steel 5000kg, binder 400kg is stirred
Mix mixing；
（2）Through extrusion forming of two pairs of rollers ball press, pressure 15MPa obtains one-pass molding material.
（3）One-pass molding material is molded through two pairs of rollers ball press secondary extrusion again, and pressure 19MPa is exported through belt to the length of side
For the square hole screen of 20mm, 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, it falls altogether 3 times, then uses the round-hole mesh of aperture 10mm, screening, it is powder rate to account for the ratio between total weight less than 10mm weight.Through surveying
It measures：Powder rate is 11%.
1 compression strength detection data of table
Dedusting ash of stainless steel pressure ball obtained by the present embodiment is added by high hopper in the electric furnace of 180 tons of smelting stainless steels,
Per stove with addition of 5 tons of dedusting ash of stainless steel pressure ball, nickel, chromium in the reducing agent reduction dedusting ash of stainless steel pressure ball in electric furnace raw material are utilized
And the oxide of iron, realize the recycling of iron, chromium, nickel, by calculating, iron yield 98%, nickel recovery rate 98%, chromium recovery rate 80%.
Embodiment 2：
（1）It first weighs dedusting ash of stainless steel according to the ratio and binder, dedusting ash of stainless steel 6000kg, binder 600kg is stirred
Mix mixing；
（2）Through extrusion forming of two pairs of rollers ball press, pressure 17MPa obtains one-pass molding material.
（3）One-pass molding material is molded through two pairs of rollers ball press secondary extrusion again, and pressure 20MPa is exported through belt to the length of side
For the square hole screen of 20mm, 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 is 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, it falls altogether 3 times, then uses the round-hole mesh of aperture 10mm, screening, it is powder rate to account for the ratio between total weight less than 10mm weight.Through surveying
It measures：Powder rate is 11%.
2 compression strength detection data of table
Dedusting ash of stainless steel pressure ball obtained by the present embodiment is added by high hopper in the electric furnace of 180 tons of smelting stainless steels,
Per stove with addition of 6 tons of dedusting ash of stainless steel pressure ball, nickel, chromium in the reducing agent reduction dedusting ash of stainless steel pressure ball in electric furnace raw material are utilized
And the oxide of iron, realize the recycling of iron, chromium, nickel, by calculating, iron yield 98.3%, nickel recovery rate 99%, chromium recovery rate
79%。
Claims (4)
1. a kind of utilization method of dedusting ash of stainless steel, it is characterised in that include the following steps：
（1）Dedusting ash of stainless steel and binder are 1 in mass ratio：0.06 ~ 0.13 ratio stirs and evenly mixs, and the binder includes
Starch and magnesium chloride；
In binder, the quality proportioning of starch and magnesium chloride is：Starch：70 ~ 82%, magnesium chloride：18-30%；
（2）Through extrusion forming of two pairs of rollers ball press, pressure 13-20MPa obtains one-pass molding material；
（3）One-pass molding material is molded through two pairs of rollers ball press secondary extrusion again, and pressure 14-20MPa is exported through belt to the hole length of side
For the square hole screen of 20mm, screening obtains finished product dedusting ash of stainless steel pressure ball；
（4）The electric furnace of smelting stainless steel is added by high hopper or alloy feed bin or other means for dedusting ash of stainless steel pressure ball
In, per stove with addition of a certain amount of dedusting ash of stainless steel pressure ball, dedusting ash of stainless steel pressure is restored using the reducing agent in electric furnace raw material
The oxide of nickel, chromium and iron in ball realizes the recycling of iron, chromium, nickel.
2. the utilization method 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%.
3. the utilization method of dedusting ash of stainless steel according to claim 2, 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.
4. the utilization method of dedusting ash of stainless steel according to claim 2, it is characterised in that：The assay method of the powder rate
For：20kg samples are weighed at random, are fallen on steel plate from 2 meters of eminences, falls altogether 3 times, then uses the round-hole mesh of aperture 10mm, sieve,
It is powder rate to account for the ratio between total weight less than 10mm weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264871.8A CN107034361B (en) | 2017-04-21 | 2017-04-21 | A kind of utilization method of dedusting ash of stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264871.8A CN107034361B (en) | 2017-04-21 | 2017-04-21 | A kind of utilization method of dedusting ash of stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107034361A CN107034361A (en) | 2017-08-11 |
| CN107034361B true CN107034361B (en) | 2018-07-17 |
Family
ID=59536067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710264871.8A Active CN107034361B (en) | 2017-04-21 | 2017-04-21 | A kind of utilization method of dedusting ash of stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107034361B (en) |
Families Citing this family (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 |
| CN112981095B (en) * | 2021-02-08 | 2023-01-31 | 山西太钢不锈钢股份有限公司 | Iron scale ball pressing process |
| 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 |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067180A (en) * | 2007-06-09 | 2007-11-07 | 山西太钢不锈钢股份有限公司 | Chronium-nickel alloy element electric furnace smelting recovery method from stainless steel dedusting ash |
| CN101270410A (en) * | 2007-03-20 | 2008-09-24 | 尚国洪 | Cold bonded pellet and method of producing the same |
| CN101705333A (en) * | 2009-11-28 | 2010-05-12 | 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 |
| CN104046773A (en) * | 2014-06-25 | 2014-09-17 | 重庆科健冶金材料有限公司 | Technique for producing cold-bonded pellets from steel converter dust removal ash |
| CN104313314A (en) * | 2014-10-27 | 2015-01-28 | 山西太钢不锈钢股份有限公司 | Method for manufacturing converter fly ash pressing balls |
-
2017
- 2017-04-21 CN CN201710264871.8A patent/CN107034361B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270410A (en) * | 2007-03-20 | 2008-09-24 | 尚国洪 | Cold bonded pellet and method of producing the same |
| CN101067180A (en) * | 2007-06-09 | 2007-11-07 | 山西太钢不锈钢股份有限公司 | Chronium-nickel alloy element electric furnace smelting recovery method from stainless steel dedusting ash |
| CN101705333A (en) * | 2009-11-28 | 2010-05-12 | 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 |
| CN104046773A (en) * | 2014-06-25 | 2014-09-17 | 重庆科健冶金材料有限公司 | Technique for producing cold-bonded pellets from steel converter dust removal ash |
| CN104313314A (en) * | 2014-10-27 | 2015-01-28 | 山西太钢不锈钢股份有限公司 | Method for manufacturing converter fly ash pressing balls |
Non-Patent Citations (2)
| Title |
|---|
| "炼制不锈钢除尘灰的造球特性";李小明等;《工业加热》;20071231;第36卷(第1期);第59页第1栏第2-4段 * |
| "电炉直接利用Cr-Ni不锈钢除尘灰的试验分析";段建平等;《钢铁》;20090531;第44卷(第5期);第76页摘要、第2栏第2段 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107034361A (en) | 2017-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107034361B (en) | A kind of utilization method of dedusting ash of stainless steel | |
| CN104109755B (en) | A kind of dedusting ash is colded pressing metal pelletizing production system and method | |
| CN101560583B (en) | Converter coolant taking metallurgical waste as raw material and manufacturing method thereof | |
| CN107008914B (en) | Reduced iron powder production process for improving performance of reduced iron powder | |
| CN102634718B (en) | Preparation process for organically-combined fluorite ball | |
| CN103042223A (en) | Reduced iron powder production process | |
| CN101654737B (en) | Compound iron ore pellet of molybdenum tailings and sulfate slags and preparation method thereof | |
| CN104212927A (en) | Production process for marking iron powder by taking vanadium titano-magnetite as raw materials | |
| CN104263918A (en) | Cold-pressing forming method | |
| CN101724734B (en) | Complex desulfurizer and manufacturing method | |
| CN103060525B (en) | Process for high pressure compaction of fluorite ball with sodium silicate as binder | |
| CN101560581B (en) | Converter coolant and manufacturing method thereof | |
| CN102746913A (en) | Moulding method of moulded coal used for smelting-reduction ironmaking | |
| CN107083491A (en) | The technique that a kind of carbothermy produces magnesium metal and calcium carbide simultaneously | |
| CN103031404A (en) | Method for producing steel balls of ball mill | |
| CN105714103A (en) | Method for producing sinter by using iron ore concentrate as main iron material | |
| CN104099467A (en) | Technology for producing regenerated, cured and formed manganese ore blocks by using manganese-silicon alloy smelting industrial fumes | |
| CN103526059A (en) | Automatic production technology of forged manganese product | |
| CN108059156A (en) | It is a kind of to obtain the method for high grade carburant using graphitizing furnace byproduct | |
| CN103433097B (en) | Accurate ball loading and adding method in dry ore grinding | |
| CN103695641B (en) | One freezes off knot ball press technique high calcium consolidating agent and using method | |
| CN101486583A (en) | Iron runner ramming mass | |
| CN103834803A (en) | Magnetic separation powder utilization method | |
| CN108409281A (en) | A kind of nickel slag bake-free brick and preparation method thereof | |
| CN102533374A (en) | Molded coal produced by recycled steel factory dust and used for smelting melted iron and manufacture method thereof |
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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
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. |