CN105714108A - Pellet binder and pellet produced therefrom - Google Patents
Pellet binder and pellet produced therefrom Download PDFInfo
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- CN105714108A CN105714108A CN201410712266.9A CN201410712266A CN105714108A CN 105714108 A CN105714108 A CN 105714108A CN 201410712266 A CN201410712266 A CN 201410712266A CN 105714108 A CN105714108 A CN 105714108A
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- pellet
- binder
- iron
- binding agent
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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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- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a pellet binder and a pellet produced therefrom. The binder comprises, by wt%, 30%-60% of magnesium chloride, and 40%-70% of bentonite. The produced pellet comprises, by wt%, 6%-15% of the binder, and 85%-94% of iron-containing scrap; wherein the iron-containing scrap comprises the following components by weight: 25%-40% of converter dust sludge, 25%-45% of gas ash, and 20%-44% of iron sheet. The binder provided by the invention can improve the wet pellet strength of a cold-pressed pellet, and also can significantly improve the dry pellet strength of a cold-pressed pellet. The pellet made from the binder has greatly reduced production cost, the pellet preparation process is simplified, also the compressive properties of the pellet is enhanced, the compression resistance of the wet pellet is up to 140N, the compression resistance of the dry pellet is up to more than 2400N, and 1m high free-fall test can reach more than 18 times, thus fully meeting the strength requirements of metallurgical cold-pressed pellets.
Description
Technical field
The invention belongs to metallurgical cold-pressed pellets field, particularly relate to a kind of pellet binder and the pelletizing utilizing this binding agent to produce thereof.
Background technology
Implementing Circular Economy in metallurgy industry, comprehensively utilizes the ion dust mud contaning waste material produced in smelting, rolling process, to produce coal-pressing ball for blast furnace or converter, it is simply that very important one.
At present, the binding agent that pelletizing is conventional has sodium silicate aqueous solution, and its adhesion strength is difficult to meet the production requirement of coal-pressing ball；And organic high molecular polymer class binding agent, general thermal stability is poor, is only capable of using at a lower temperature, it addition, such binding agent price is high, adds this binding agent and can increase considerably production cost in pelletizing.
In preparing the process of coal-pressing ball or agglomerate, binding agent is requisite, but adds binding agent and not only make complex manufacturing, also greatly increases production cost.Though some binding agent costs are not high, but complicated component, wayward.In Hu Huiping in 2000 et al. " development of Cold Consolidation Molding of Coke Powder binding agent " paper delivered, provide a kind of binding agent, but composition is considerably complicated, wayward, use dumb.The disclosed Chinese patent " cold press composite pellet binder " (CN101407860A) such as Zhang Yulin in 2009, adopts compound prescription, and with corn starch, potato starch for primary raw material, interpolation potassium permanganate, potassium hydroxide are mixed into a kind of binding agent；With solid-state sodium silicate for main component, adding aluminium potassium sulfate, prodan be another kind of binding agent, two kinds of mixture with the use of, although high intensity pelletizing can be prepared under certain condition, but convenient not during use.
Summary of the invention
It is contemplated that overcome the defect of prior art, it is provided that one can reduce production cost, simplifying pelletizing preparation technology, intensity is fully achieved the pellet binder of metallurgical cold-pressed pellets requirement and the pelletizing of production thereof.
For this, the solution that the present invention takes is:
A kind of pellet binder, it is characterised in that its composition by weight percent is: magnesium chloride 30%～60%, bentonite 40%～70%.
A kind of pelletizing applying the production of above-mentioned pellet binder, it is characterised in that described pelletizing composition by weight percent is: binding agent 6%～15%, iron-containing waste 85%～94%；
Described iron-containing waste comprises: bof sludge, gas ash, iron sheet, and wherein each component percentage by weight in iron-containing waste is, bof sludge 25%～40%, gas ash 25%～45%, iron sheet 20%～44%.
The invention have the benefit that
Binding agent of the present invention both can improve the wet bulb intensity of coal-pressing ball, the dry bulb intensity of coal-pressing ball can also be significantly improved, the pelletizing that this binding agent prepares is used not only can greatly to reduce production cost, simplify pelletizing preparation technology, and pelletizing comprcssive strength performance can be improved, its wet bulb comprcssive strength is up to 140N, and dry bulb comprcssive strength is up to more than 2400N, 1 meter of high free fall test, up to more than 18 times, is fully achieved the requirement of metallurgical cold-pressed pellets intensity.
Detailed description of the invention
Embodiment 1:
Binder Composition mass percent is magnesium chloride 30%, bentonite 70%.
Coal-pressing ball compound composition by weight percent is: binding agent 6%, iron-containing waste 94%.
In iron-containing waste, each composition accounting is bof sludge 25%, gas ash 31%, iron sheet 44%.
The preparation method of above-mentioned coal-pressing ball is first by binding agent mix homogeneously, then mixes by weight percentage with ion dust mud contaning waste material, and in kolleroang, mixed grind makes type through chilling press at 100 tons of pressure to uniformly in 20 minutes.Wet bulb comprcssive strength is up to 180N, and dry bulb comprcssive strength reaches 2300N, 1 meter high free fall test 19 times, is fully achieved the requirement of metallurgical cold-pressed pellets intensity, suppresses high intensity pelletizing.
Embodiment 2:
Binder Composition mass percent is magnesium chloride 50%, bentonite 50%.
Coal-pressing ball compound composition by weight percent is: binding agent 8%, iron-containing waste 92%.
In iron-containing waste, each composition accounting is bof sludge 40%, gas ash 33%, iron sheet 27%.
The preparation method of above-mentioned coal-pressing ball is first by binding agent mix homogeneously, then mixes by weight percentage with ion dust mud contaning waste material, and in kolleroang, mixed grind makes type through chilling press at 150 tons of pressure to uniformly in 20 minutes.Wet bulb comprcssive strength is up to 150N, and dry bulb comprcssive strength reaches 2500N, 1 meter high free fall test 18 times, is fully achieved the requirement of metallurgical cold-pressed pellets intensity, suppresses high intensity pelletizing.
Embodiment 3:
Binder Composition mass percent is magnesium chloride 54%, bentonite 46%.
Coal-pressing ball compound composition by weight percent is: binding agent 10%, iron-containing waste 90%.
In iron-containing waste, each composition accounting is bof sludge 28%, gas ash 34%, iron sheet 38%.
The preparation method of above-mentioned coal-pressing ball is first by binding agent mix homogeneously, then mixes by weight percentage with ion dust mud contaning waste material, and in kolleroang, mixed grind makes type through chilling press at 200 tons of pressure to uniformly in 20 minutes.Wet bulb comprcssive strength is up to 190N, and dry bulb comprcssive strength reaches 2500N, 1 meter high free fall test 20 times, is fully achieved the requirement of metallurgical cold-pressed pellets intensity, suppresses high intensity pelletizing.
Embodiment 4:
Binder Composition mass percent is magnesium chloride 42%, bentonite 58%.
Coal-pressing ball compound composition by weight percent is: binding agent 12%, iron-containing waste 88%.
In iron-containing waste, each composition accounting is bof sludge 27%, gas ash 38%, iron sheet 35%.
The preparation method of above-mentioned coal-pressing ball is first by binding agent mix homogeneously, then mixes by weight percentage with ion dust mud contaning waste material, and in kolleroang, mixed grind makes type through chilling press at 240 tons of pressure to uniformly in 20 minutes.Wet bulb comprcssive strength is up to 180N, and dry bulb comprcssive strength reaches 2700N, 1 meter high free fall test 22 times, is fully achieved the requirement of metallurgical cold-pressed pellets intensity, suppresses high intensity pelletizing.
Embodiment 5:
Binder Composition mass percent is magnesium chloride 60%, bentonite 40%.
Coal-pressing ball compound composition by weight percent is: binding agent 15%, iron-containing waste 85%.
In iron-containing waste, each composition accounting is bof sludge 34%, gas ash 30%, iron sheet 36%.
The preparation method of above-mentioned coal-pressing ball is first by binding agent mix homogeneously, then mixes by weight percentage with ion dust mud contaning waste material, and in kolleroang, mixed grind makes type through chilling press at 280 tons of pressure to uniformly in 20 minutes.Wet bulb comprcssive strength is up to 210N, and dry bulb comprcssive strength reaches 3000N, 1 meter high free fall test 25 times, is fully achieved the requirement of metallurgical cold-pressed pellets intensity, suppresses high intensity pelletizing.
Claims (2)
1. a pellet binder, it is characterised in that its one-tenth is grouped into percentage by weight and is: magnesium chloride 30%～60%, bentonite 40%～70%.
2. apply the pelletizing that pellet binder described in claim 1 produces for one kind, it is characterised in that described pelletizing composition by weight percent is: binding agent 6%～15%, iron-containing waste 85%～94%；
Described iron-containing waste comprises: bof sludge, gas ash, iron sheet, and wherein each component percentage by weight in iron-containing waste is, bof sludge 25%～40%, gas ash 25%～45%, iron sheet 20%～44%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712266.9A CN105714108A (en) | 2014-12-01 | 2014-12-01 | Pellet binder and pellet produced therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712266.9A CN105714108A (en) | 2014-12-01 | 2014-12-01 | Pellet binder and pellet produced therefrom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105714108A true CN105714108A (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410712266.9A Pending CN105714108A (en) | 2014-12-01 | 2014-12-01 | Pellet binder and pellet produced therefrom |
Country Status (1)
| Country | Link |
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| CN (1) | CN105714108A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399678A (en) * | 2016-09-28 | 2017-02-15 | 武汉钢铁股份有限公司 | Binder for pelletizing of pellet ores and preparation method of binder |
| CN107723465A (en) * | 2017-09-28 | 2018-02-23 | 毕德玉 | A kind of compound method of pelletizing binding agent containing magnesium |
| CN107988485A (en) * | 2017-12-04 | 2018-05-04 | 钢城集团凉山瑞海实业有限公司 | A kind of quick-dry type binding agent and its application method suitable for iron scale class coal-pressing ball |
| CN111996311A (en) * | 2020-08-27 | 2020-11-27 | 攀钢集团研究院有限公司 | Vanadium extraction coolant and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348998A (en) * | 2000-10-18 | 2002-05-15 | 攀枝花钢铁（集团）公司钢铁研究院 | Metal-base powder lumping method |
| CN102337396A (en) * | 2011-10-28 | 2012-02-01 | 武汉钢铁(集团)公司 | Iron-smelting metallized pellets prepared by utilizing metallurgical dust and mud and production method thereof |
| CN102747221A (en) * | 2012-06-14 | 2012-10-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for making cold-pressed balls through using powdery material containing iron |
| CN102912120A (en) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | Method for manufacturing high-strength cold-pressed pellets |
-
2014
- 2014-12-01 CN CN201410712266.9A patent/CN105714108A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348998A (en) * | 2000-10-18 | 2002-05-15 | 攀枝花钢铁（集团）公司钢铁研究院 | Metal-base powder lumping method |
| CN102337396A (en) * | 2011-10-28 | 2012-02-01 | 武汉钢铁(集团)公司 | Iron-smelting metallized pellets prepared by utilizing metallurgical dust and mud and production method thereof |
| CN102747221A (en) * | 2012-06-14 | 2012-10-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for making cold-pressed balls through using powdery material containing iron |
| CN102912120A (en) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | Method for manufacturing high-strength cold-pressed pellets |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399678A (en) * | 2016-09-28 | 2017-02-15 | 武汉钢铁股份有限公司 | Binder for pelletizing of pellet ores and preparation method of binder |
| CN106399678B (en) * | 2016-09-28 | 2018-02-23 | 武汉钢铁有限公司 | A kind of pellet balling-up binding agent and preparation method thereof |
| CN107723465A (en) * | 2017-09-28 | 2018-02-23 | 毕德玉 | A kind of compound method of pelletizing binding agent containing magnesium |
| CN107988485A (en) * | 2017-12-04 | 2018-05-04 | 钢城集团凉山瑞海实业有限公司 | A kind of quick-dry type binding agent and its application method suitable for iron scale class coal-pressing ball |
| CN111996311A (en) * | 2020-08-27 | 2020-11-27 | 攀钢集团研究院有限公司 | Vanadium extraction coolant and preparation method thereof |
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Application publication date: 20160629 |