CN103641343A - Method for grinding preprocessing steel slag - Google Patents
Method for grinding preprocessing steel slag Download PDFInfo
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- CN103641343A CN103641343A CN201310632025.9A CN201310632025A CN103641343A CN 103641343 A CN103641343 A CN 103641343A CN 201310632025 A CN201310632025 A CN 201310632025A CN 103641343 A CN103641343 A CN 103641343A
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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
- 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
The invention discloses a method for grinding preprocessing steel slag. The method is characterized in that RO-phase particles in the steel slag are removed before the steel slag is ground. The method comprises the steps of (1) adding a preprocessing system on the basis of the existing grinding system, wherein the preprocessing system comprises an ultrashort mill, an RO-phase processing device, a screen and a magnetic separation device; (2) crushing the steel slag into the granularity of 1mm through the ultrashort mill; (3) removing the RO-phase particles in the steel-slag powder through the RO-phase processing device; (4) sending the steel slag powder to the magnetic separation device to be magnetically separated so as to obtain the equivalent iron ore concentrate through the screen; (5) further grinding the steel slag powder processed in step (4) through the grinding system. By adopting the method, the RO phase in the steel slag is eliminated within the appropriate granularity range, so that the steel slag grinding system can continuously and high-efficiently operate. The RO-phase particles are difficult to crush and can continuously abrade the mill if being accumulated on a grinding disc, and the yield and service life of the mill can be influenced.
Description
Technical field:
The present invention relates to technology of producing cement field, particularly relate to a kind of pretreated method of steel slag grinding, make continuous, the efficient operation of steel slag grinding system become possibility.
Background technology:
Slag is in steelmaking process, and the impurity that the oxide compound of the oxidized rear generation of each element, the furnace lining being etched and fettling material, metal charge are brought in metal charge is as silt particle and the slag making materials that specially adds, and wherein slag making materials is the main source of slag.Slag is the material that contains silicate, ferro-aluminate ore deposit phase through high-temperature calcination, can be used as dross slag cement raw material, the raw material of cement additive, calcining cement clinker and building product etc.Yet, because the component of slag is various, cause the grindability of the contained mineral of slag to exist very large difference.Wherein, molten to have FeO, MgO be the popularity sosoloid RO phase that the metal oxide of other divalence such as main and MnO forms, and its vickers hardness number reaches 330HV/MPa, and its hydration reaction activity is very low.In existing slag use procedure, steel slag grinding system typically uses Vertical Mill or ball milling carries out grinding.But, in actual production process, always have the sosoloid RO phase particle of some large particle diameters to be difficult to fragmentation.While using vertical mill grinding, because these difficult abrasive particle quality are larger, selection by winnowing is difficult to screen out these particles, accumulates on mill, constantly wear and tear mill and grinding roller, affects vertical mill system output and mill, grinding roller life-span.While using ball mill grinding, these particles can stop up bin isolation board, have reduced output and the continuous operating time of ball mill.So how processing these particles that are difficult to grinding is the key issues that solve steel slag grinding technology.
Summary of the invention:
The problem existing in order to solve above-mentioned prior art, the object of this invention is to provide simple, the lower-cost steel slag grinding pretreatment process of a kind of technique, to realize the failure rate that reduces grinding system and the object that improves its mill efficiency.
The pretreated method of steel slag grinding, is characterized in that: before grinding, weed out the RO phase particle in slag.
The pretreated method of a kind of steel slag grinding of the present invention, it is characterized in that comprising following concrete steps: (1) increases a pretreatment system on the basis of existing grinding system, described pretreatment system comprises a ultrashort mill, a RO phase treatment unit, a sieve and a concentration equipment; (2) slag passes through ultrashort mill by slag crushing to millimeter; (3) by RO phase treatment unit, reject RO phase particle in slag powder again; (4) by sifting out, be sent to concentration equipment and carry out the smart iron ore that magnetic separation obtains respective amount; (5) the slag powder of processing through step (4) is sent into grinding system and carry out further grinding.
Ultrashort mill in described pretreatment system, RO phase treatment unit, sieve and concentration equipment are existing structure, directly from market, buy and obtain.
Compared with prior art, the invention has the beneficial effects as follows:
1, solved the problem that slag can not be used in batches in cement production process.
2, grinding system life-span and efficiency have been improved.
3, in preprocessing process, can obtain the smart iron ore of respective amount.
4, this traditional industry waste material of slag is turned waste into wealth, introduce the production process of cement clinker, ensureing under the prerequisite of finished cement quality, effectively reduce production costs, played the effect of protection of the environment simultaneously.
Accompanying drawing explanation:
Fig. 1 is process flow sheet of the present invention.
Concrete embodiment:
Below in conjunction with accompanying drawing, the embodiment of a kind of pretreated method of steel slag grinding proposing according to the present invention is explained, be described in detail as follows.
Technological process of the present invention:
A kind of pretreated method of steel slag grinding, before grinding, weed out the RO phase particle in slag, comprise following concrete steps: (1) increases a pretreatment system on the basis of existing grinding system, described pretreatment system comprises a ultrashort mill, a RO phase treatment unit, a sieve and a concentration equipment; (2) slag passes through ultrashort mill by slag crushing to millimeter; (3) by RO phase treatment unit, reject RO phase particle in slag powder again; (4) by sifting out, be sent to concentration equipment and carry out the smart iron ore that magnetic separation obtains respective amount; (5) the slag powder of processing through step (4) is sent into grinding system and carry out further grinding.
Ultrashort mill in described pretreatment system, RO phase treatment unit, sieve and concentration equipment are existing structure, directly from market, buy and obtain.
Technological process of the present invention:
Slag is sent into ultrashort mill by travelling belt, after fragmentation, obtain a millimeter slag powder, by RO phase treatment unit, reject RO phase particle in slag powder again, easily wearing into minute as tricalcium silicate and Dicalcium Phosphate (Feed Grade) are sent to concentration equipment through sifting out in slag carried out magnetic separation and obtained respective amount essence iron ore, finally by sending into grinding system through the slag powder of magnetic separation, carry out further grinding, can obtain having the slag powder of certain hydration activity.
Claims (2)
1. the pretreated method of steel slag grinding, is characterized in that: before grinding system, weed out the RO phase particle in slag.
2. the pretreated method of steel slag grinding according to claim 1, it is characterized in that comprising following concrete steps: (1) increases a pretreatment system on the basis of existing grinding system, described pretreatment system comprises a ultrashort mill, a RO phase treatment unit, a sieve and a concentration equipment; (2) slag passes through ultrashort mill by slag crushing to millimeter; (3) by RO phase treatment unit, reject RO phase particle in slag powder again; (4) by sifting out, be sent to concentration equipment and carry out the smart iron ore that magnetic separation obtains respective amount; (5) the slag powder of processing through step (4) is sent into grinding system and carry out further grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632025.9A CN103641343A (en) | 2013-12-02 | 2013-12-02 | Method for grinding preprocessing steel slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310632025.9A CN103641343A (en) | 2013-12-02 | 2013-12-02 | Method for grinding preprocessing steel slag |
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| CN103641343A true CN103641343A (en) | 2014-03-19 |
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| CN201310632025.9A Pending CN103641343A (en) | 2013-12-02 | 2013-12-02 | Method for grinding preprocessing steel slag |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103992049A (en) * | 2014-04-28 | 2014-08-20 | 武汉钢铁(集团)公司 | Cement clinker preparation method using converter steel slag to correct iron quality |
| CN104446022A (en) * | 2014-12-18 | 2015-03-25 | 长沙紫宸科技开发有限公司 | Method for preparing steel slag sand, activated slag powder and RO phase from steel slag |
| CN104841554A (en) * | 2015-06-04 | 2015-08-19 | 山东省建筑材料工业设计研究院 | Special RO-phase magnetic separator for steel slag micro powder |
| CN107473612A (en) * | 2017-09-21 | 2017-12-15 | 西南科技大学 | A kind of method for reducing slag ore grinding energy consumption |
| CN110340007A (en) * | 2019-07-25 | 2019-10-18 | 衢州柯城幕布电子有限公司 | A kind of multiple sieving optimization processing device based on steel slag |
| CN113233807A (en) * | 2020-09-08 | 2021-08-10 | 山东埃尔派粉体科技有限公司 | Method for high-activity superfine treatment of RO phase in steel slag |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1899731A (en) * | 2006-07-18 | 2007-01-24 | 浙江海穆钢铁服务有限公司 | Method for producing super fine steel slag powder |
-
2013
- 2013-12-02 CN CN201310632025.9A patent/CN103641343A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1899731A (en) * | 2006-07-18 | 2007-01-24 | 浙江海穆钢铁服务有限公司 | Method for producing super fine steel slag powder |
Non-Patent Citations (1)
| Title |
|---|
| 侯新凯 等: "钢渣中二价金属氧化物固溶体的选别性研究", 《硅酸盐学报》, vol. 41, no. 8, 18 August 2013 (2013-08-18), pages 1142 - 1150 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103992049A (en) * | 2014-04-28 | 2014-08-20 | 武汉钢铁(集团)公司 | Cement clinker preparation method using converter steel slag to correct iron quality |
| CN103992049B (en) * | 2014-04-28 | 2016-04-27 | 武汉钢铁(集团)公司 | Bessemer furnace slag is utilized to correct the cement clinker preparation method of irony |
| CN104446022A (en) * | 2014-12-18 | 2015-03-25 | 长沙紫宸科技开发有限公司 | Method for preparing steel slag sand, activated slag powder and RO phase from steel slag |
| CN104446022B (en) * | 2014-12-18 | 2016-06-08 | 长沙紫宸科技开发有限公司 | A kind of prepared from steel slag is for the method for Steel-slag Sand, activation ground-slag and RO phase |
| CN104841554A (en) * | 2015-06-04 | 2015-08-19 | 山东省建筑材料工业设计研究院 | Special RO-phase magnetic separator for steel slag micro powder |
| CN104841554B (en) * | 2015-06-04 | 2017-03-01 | 山东省建筑材料工业设计研究院 | A kind of special RO phase magnetic separator of slag micro powder |
| CN107473612A (en) * | 2017-09-21 | 2017-12-15 | 西南科技大学 | A kind of method for reducing slag ore grinding energy consumption |
| CN110340007A (en) * | 2019-07-25 | 2019-10-18 | 衢州柯城幕布电子有限公司 | A kind of multiple sieving optimization processing device based on steel slag |
| CN110340007B (en) * | 2019-07-25 | 2020-03-31 | 山东路友再生资源设备有限公司 | Multiple sieving optimization treatment device based on steel slag |
| CN113233807A (en) * | 2020-09-08 | 2021-08-10 | 山东埃尔派粉体科技有限公司 | Method for high-activity superfine treatment of RO phase in steel slag |
| CN113233807B (en) * | 2020-09-08 | 2021-11-19 | 山东埃尔派粉体科技有限公司 | Method for high-activity superfine treatment of RO phase in steel slag |
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Application publication date: 20140319 |