CN1891837B - Mineral raw material sintering process - Google Patents
Mineral raw material sintering process Download PDFInfo
- Publication number
- CN1891837B CN1891837B CN2005100317915A CN200510031791A CN1891837B CN 1891837 B CN1891837 B CN 1891837B CN 2005100317915 A CN2005100317915 A CN 2005100317915A CN 200510031791 A CN200510031791 A CN 200510031791A CN 1891837 B CN1891837 B CN 1891837B
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- agglomerate
- sieve
- screening
- section
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a raw mineral material sintering technology that separates to filtering process into two section filtering processes: the first process filtering the granularity over 12mm andsending to blast furnace as finished product; the granularity below 12mm would be sent to second filtering section to filter 12-5mm as bedding layer, and the rest would be sent to blast furnace. Thegrating clearance of sinter machine is 4mm. The invention could save engineer construction invest, decrease device quantity, and lower failure rate. The 12-20mm granularity sinter mineral is the bestbedding layer for sinter machine, and is also the best raw material of blast furnace. It could improve the permeability of blast furnace and save energy. The invention is also benefit for environmentprotection.
Description
Technical field
The present invention relates to a kind of metallurgy sintered production technique, belong to a kind of specifically with the sintering process of small-particle as grate-layer material.
Background technology
In metallurgy sintered production process, for obtaining the second best in quality sinter machine grate-layer material of granularity, the screening operation of agglomerate adopts four sections screening one cold broken technical process mostly, its specific implementation process is as follows: the mining stationary screen of cooled finished product carries out first section screening, on the sieve 〉=agglomerate of 50mm is crushed to≤50mm, with sieve down 0～＜agglomerate of 50mm goes into second section screening, uses vibratory screening apparatus; On two sections screening sieves 〉=20～＜the agglomerate finished product of 50mm is as blast furnace raw material, sieve down 0～＜agglomerate of 20mm goes into the 3rd section screening; On three sections screening sieves 〉=12～＜agglomerate of 20mm is as the grate-layer material of sinter machine, sieve down 0～＜agglomerate of 12mm goes into the 4th section screening; On four sections screening sieves 〉=5～＜the agglomerate finished product of 12mm is as blast furnace raw material, sieve down 0～＜agglomerate of 5mm returns sintering as returning mine.Four sections screenings, because operation is many, technology is complicated, the corresponding height of facility investment, it is also many also to be accompanied by the various faults of bringing simultaneously, and power consumption is high, and environmental pollution is also more serious.
Summary of the invention
Purpose of the present invention is to provide a kind of with a kind of mineral raw material sintering process of small grain size agglomerate as the grate-layer material of sinter machine.
Technical scheme of the present invention is: the screening operation of agglomerate is two sections sieving technologies, first section sieve classification granularity on the sieve 〉=12mm, be sent to blast furnace as finished product, sieve the agglomerate of following＜12mm grade and send into second section screening, on the sieve＜12～〉=5mm partially sinter the ore deposit as grate-layer material, rest part is sent to blast furnace as little finished product, sieve down 0～＜5mm returns sintering, recycle as returning mine.The sinter machine grid gap is reduced to 4mm by original 5mm.
Adopt the present invention, can save engineering construction investment.Change two sections screening estimations by a large-type sinterer into by four sections screenings, surplus investment costs such as screening plant, dust-removal system, civil engineering can save 1,000 ten thousand yuan.Owing to reduced number of devices, the failure rate that equipment is produced reduces, thereby improves the operating rate of screening system.The agglomerate of 12～20mm size range is best sinter machine grate-layer material, also is the optimum feed stock of blast furnace.The granularity of general agglomerate is roughly: 〉=20mm is 32%;＜20～〉=12mm is 35%;＜12～〉=5mm is 35%.If from 12～20mm grade of 35%, take out 3%, just mean that the mean particle size of agglomerate reduces as grate-layer material.And the agglomerate of 12～20mm size range is changed into blast furnace, can improve the mean particle size of agglomerate and the homogeneity of agglomerate, improve blast furnace permeability, make blast furnace further energy-conservation.Simultaneously, reduce the product dirt pits of screening operation, helped environment protection.
Embodiment
The first section screening in the cooled finished product of the present invention ore deposit, on the sieve 〉=the agglomerate finished product of 12mm is as blast furnace raw material, sieve down 0～＜agglomerate of 12mm goes into second section screening; On two sections screening sieves 〉=5～＜agglomerate of 12mm is as the grate-layer material of sinter machine, sieve down 0～＜agglomerate of 5mm carries out sintering, recycle as returning mine to return.
Claims (1)
1. mineral raw material sintering process, it is characterized in that: the screening operation of agglomerate is two sections sieving technologies:
First section sieve classification granularity be, on the sieve 〉=agglomerate of 12mm is sent to blast furnace as finished product, sieve down＜agglomerate of 12mm grade sends into second section screening;
Second section screening be, on the sieve＜12～〉=5mm partially sinter the ore deposit as grate-layer material, all the other＜12～〉=part of 5mm is sent to blast furnace as little finished product, sieve down 0～＜5mm returns sintering, recycle as returning mine; Sinter machine castor interspace is 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100317915A CN1891837B (en) | 2005-07-04 | 2005-07-04 | Mineral raw material sintering process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100317915A CN1891837B (en) | 2005-07-04 | 2005-07-04 | Mineral raw material sintering process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1891837A CN1891837A (en) | 2007-01-10 |
| CN1891837B true CN1891837B (en) | 2010-04-07 |
Family
ID=37597030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100317915A Active CN1891837B (en) | 2005-07-04 | 2005-07-04 | Mineral raw material sintering process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1891837B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928824B (en) * | 2009-06-22 | 2013-05-01 | 鞍钢股份有限公司 | Sintered ore production method capable of reducing sintered solid fuel consumption and improving strength |
| CN102041330A (en) * | 2010-12-29 | 2011-05-04 | 攀钢集团钢铁钒钛股份有限公司 | Charging material control method of blast-furnace smelting vanadium-titanium magnetite |
| CN102321798A (en) * | 2011-10-18 | 2012-01-18 | 武汉钢铁(集团)公司 | Sinter grading charging method |
| CN108004392B (en) * | 2018-02-08 | 2024-02-23 | 山东钢铁股份有限公司 | Sintering equipment and process for reducing burning up of sintered solid |
| CN109097560A (en) * | 2018-09-12 | 2018-12-28 | 武汉科技大学 | A kind of application method of low grade hematite in sintering production |
| CN109338100A (en) * | 2018-11-29 | 2019-02-15 | 武汉钢铁有限公司 | Make the grate-layer material whole grain method of grate-layer material based on pellet |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108313A (en) * | 1985-11-07 | 1987-08-26 | 中国矿业学院 | The coal method for sieving of probability of classification screen |
-
2005
- 2005-07-04 CN CN2005100317915A patent/CN1891837B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108313A (en) * | 1985-11-07 | 1987-08-26 | 中国矿业学院 | The coal method for sieving of probability of classification screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1891837A (en) | 2007-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1891837B (en) | Mineral raw material sintering process | |
| CN103290153B (en) | Steel slag treating technology | |
| CN102228865B (en) | Novel wet-type strong-magnetic pre-separation process of weak-magnetic low-grade iron mineral roller mill | |
| CN103060493B (en) | Steel slag water washing ball milling manufacture processing craft | |
| CN109365106A (en) | A kind of stainless steel slag dry type magnetic separation device and technique | |
| CN104722396B (en) | Comprehensive utilization method of magnetite-containing country rock | |
| CN102251117B (en) | Method for extracting rare earth component from crystal waste slag | |
| CN104004867A (en) | High-efficiency economic secondary treatment process for steel slag | |
| CN103601388B (en) | The technique of high-titanium blast furnace slag production and construction rubble or sand | |
| CN103752593A (en) | Process for selecting and recovering heavy metal substances in domestic garbage incineration slag | |
| CN102923980A (en) | Method and system for water-power engineering mixing sand making | |
| CN100569963C (en) | A kind of method of purification of granular slag steel | |
| CN107899723A (en) | A kind of slag solid waste high pressure roller grinding magnetic separation process method | |
| CN112264182A (en) | Crushing and grinding process of low-hardness raw ore | |
| CN210585299U (en) | Iron ore crushing screening dry separation system | |
| CN110498624A (en) | The method that iron tailings wholegrain grade prepares cement irony correction material | |
| CN202045757U (en) | High-quality aggregate processing production equipment | |
| CN203235536U (en) | Integrated iron ore production device | |
| CN103693875A (en) | Production process for recycling premixed concrete solid waste residues | |
| CN101884950A (en) | Limestone crushing process | |
| CN102557493B (en) | High-efficiency and energy-saving preparation method of slag micro-powder | |
| CN105268532A (en) | Combined crushing and grinding system | |
| CN115400853B (en) | Machine-made sand modularized production process for prestressed concrete structure based on coarse aggregate shaping | |
| CN112371305B (en) | Mixed soil mixing-grinding magnetic separation process | |
| CN215277666U (en) | Coarse and fine aggregate simultaneous preparation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |