CN1374150A - Magnetic and gravitational separation and comprehensive utilization of vonsenite - Google Patents
Magnetic and gravitational separation and comprehensive utilization of vonsenite Download PDFInfo
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- CN1374150A CN1374150A CN 02109097 CN02109097A CN1374150A CN 1374150 A CN1374150 A CN 1374150A CN 02109097 CN02109097 CN 02109097 CN 02109097 A CN02109097 A CN 02109097A CN 1374150 A CN1374150 A CN 1374150A
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- boron
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Abstract
The present invention relates to comprehensive utilization of mineral resource. Through stepped grinding, stepped magnetic separation, combined magnetic separation-gravitational separation, B and Fe in vonsenite are separated to produce B concentrate, which is used in producing borax, and B-Fe concentrate, which is used in producing iron and steel product and high activity boron-rich sludge. The present invention enriches B2O3 of raw mineral into B concentrate mainly and Fe into B-Fe concentrate through effective separation and provides high-grade and high-activity un-expensive material for boron producing industry while utilizing reasonably the separated Fe concentrate.
Description
Affiliated technical field
The invention belongs to the mineral resources comprehensive utilization field, particularly a kind of method that is used for paigeite magnetic-gravity treatment comprehensive utilization of separation.
Background technology
China's boron aboundresources, B
2O
3Total storage reaches more than 3,900 ten thousand tons.Can be divided into sedimentary metamorphic type (boron magnesium stone ore, paigeite) by origin cause of formation boron resource, modern salt lake type (solid ore deposit, liquid ore deposit), three major types such as skarn type, its reserves account for 60%, 33%, 1% of national total storage respectively.Modern Salt Lakes type ore deposit and skarn type ore deposit are because being located in outlying and the development technique problem does not does not large-scale develop and utilize.China's boron primary industry (borax, boric acid) is main at present is raw material with the boromagnesite in the sedimentary metamorphic type boron rock (being commonly called as white boron rock).The boron magnesium stone ore structure is single, is easy to processing, although B
2O
3Lower (the average B of grade
2O
3But through the production borax that the independently developed carbon alkaline process of China can be economic, and formed the distinctive boronation worker's industrial system of China grade 12～14%).Through the existing 2,000,000 tons of (B of less than of the development and use boron magnesium stone ore reserves in more than 40 years
2O
3), the mineral resources exhaustion of original boron magnesium stone ore mine, the part mine has been closed the ore deposit and has been changed the line of production, and the output of boron magnesium stone ore far can not satisfy the needs of boron industry.Forced for many years many boronation workers enterprise to have to use B
2O
3The ore production of grade less than 10% causes consumption significantly to rise, and cost up has a strong impact on existence, the development and progress of China's boron industry.Developing new boron resource has become the task of top priority of China's boron industrial development.But paigeite forms complicated, the multielement symbiosis.
Liaoning paigeite is that primary ludwigite (Ludwigite) has decomposed boromagnesite magnetic iron ore type ore comparatively completely through the geologic process majority.Though this ore deposit contains TFe～30%, close with present the Northeast iron ore grade, mining area iron reserves only account for about 1% of national iron total storage.This ore deposit contains B
2O
3～7.5%, but B
2O
3Reserves account for national B
2O
358% of total storage is the most important boron resource of China, and the exploitation in this ore deposit must be take boron as main.
In recent years, the paigeite comprehensive utilizating research is more, wherein have: paigeite chemical treatment final products are borax (boric acid), magnesium carbonate, iron oxide red, and paigeite blast furnace process ferro-boron separates, product is for containing the B pig iron (pig iron contains B～1.0%) and having carried out large-scale experiment for two kinds of methods of rich boron slag that the boronation worker produces use, but all do not accepted by chemical industry department, its main cause be these achievements fail by existing boronation worker produce provide be badly in need of high-quality, the high activity raw material, or utilize these achievements to change too big to original production process, environmental protection and by-product investment are too high, and the fund source is difficult to solve.Cause this ore deposit can not develop so far.
Summary of the invention
High-quality, the high activity boron raw material of industry can not be provided, solve the deficient problem of boron resource for existing paigeite comprehensive utilization, the invention provides the method for a kind of paigeite magnetic-Gravity separation comprehensive utilization, this method makes the B in the paigeite
2O
3To greatest extent enrichment is for boron industry provides B
2O
3Of high grade, active high, the raw material that the product favorable rates is honest and clean; Magnetic iron ore in the ore reaches the part B with the tight symbiosis of magnetic iron ore
2O
3Effectively reclaim to greatest extent and utilization.
Technical scheme of the present invention is to utilize magnetic between essential mineral and particle size differences in the paigeite, adopt the method for stage grinding, staged magnetic separation, magnetic separation-gravity treatment beneficiation combined method, boron and iron separates production boron concentrate and boron-containing iron concentrate from paigeite in the realization paigeite.After the gained boron concentrate passes through calcination for activation, the B in the boron concentrate
2O
3Can be directly used in carbon alkali method for producing borax; The gained boron-containing iron concentrate can adopt direct-reduction-fusing separation of produced steel products and the boron-rich slag of high activity; Also can be used as the production that boron-containing additive is used for iron-smelting raw material-pellet/sintering deposit; Can also with boron-containing iron concentrate as body material, enter the low boron pig iron containing boron of blast furnace process production through agglomeration (sintering/pelletizing).Each product composition is seen attached list after raw ore of the present invention and the sorting:
The various product chemical compositions of subordinate list paigeite magnetic-gravity treatment comprehensive utilization of separation (mass fraction) %
TFe B
2O
3SiO
2AL
2O
3MgO CaO S P U Los raw ore 25.20 8.40 19.82 1.11 27.04 1.30 0.700 0.040 0.0272 5.83 boron concentrates 5.67 13.13 25.68 0.42 42.80 0.12--0.0018-boron-containing iron concentrates 55.86 5.24 3.04 0.10 10.21 0.05 0.780 0.019 0.00075 1.25 mine tailings 3.90 1.34 48.73-21.89---0.045-
Use the present invention at first to provide quality raw materials as boronation worker industry, solve the deficient problem of boron resource, realized simultaneously the reasonable comprehensive utilization of resource:
1) can be with B in the raw ore
2O
3Mainly be enriched in the boron concentrate, iron mainly is enriched in the boron-containing iron concentrate, and the main body mineral of paigeite can be realized effective separation.
2) boron concentrate utilizes the calcination for activation technology among the present invention, B after the roasting
2O
3Activation rate can reach more than 85%, be better than at present take white boron rock (boron magnesium stone ore) as the production of raw material in B
2O
3Activation rate require index (80～85), more be better than B after paigeite (black boron rock) roasting direct
2O
3Activation rate (70～75), and roasting condition is loose, the kinds of processes equipment all can be used as roasting apparatus.Boron concentrate after the roasting can be directly used in carbon alkali method for producing borax.
3) boron-containing iron concentrate utilizes the technology among the present invention, and become the boron-containing additive of Iron industry or produce low pig iron containing boron raw material, the value height, of many uses.
Boron-containing iron concentrate can be used as the boron-containing additive utilization that sintering deposit and pellet are produced in the Iron industry.Add boron-containing iron concentrate (simultaneously with addition of 1% bentonite) in pelletizing production compression strength of green pel let and dry bulb compression strength are obviously raise, roasting pelletizing compression strength increases substantially, and can reduce sintering temperature (50～70 ℃) significantly for reaching identical compression strength.Add boron-containing iron concentrate in sintering deposit production sinter strength (drum strength) is increased substantially, the rate of return mine descends, and sintering deposit natural degradation rate obviously descends, and can reduce production costs.Boron-containing iron concentrate is the good boron-containing additive that agglomerates of sintered pellets is produced.
Boron-containing iron concentrate can also utilize the selective reduction principle, adopts direct-reduction-fusing separating technology to carry out separating of effective iron and boron, with the method for oxygen position in the control slag, controls the content of ferrous oxide.When ferrous oxide boracic in the iron less than 0.5% time, boracic not in the iron when ferrous oxide is higher than 0.5%, thus obtain to contain B iron or do not contain B iron and the rich boron slag of high-grade high activity.
Boron-containing iron concentrate can also obtain to contain this B of the containing pig iron of the B pig iron (containing B0.1～0.3%) with blast furnace process and can replace the raw material use of part of boron ferroalloy as wear resistance castings through sintering or pelletizing agglomeration, and this technology can be carried out Small Scale Industry production.Although this method is to B in the boron-containing iron concentrate
2O
3Utilization rate only 10～20%, but better economic benefit can be arranged.
Description of drawings
Accompanying drawing is a process chart of the present invention
The specific embodiment
As shown in the figure:
With crushing raw ore to 20～below the 30mm, by magnetic separation non magnetic gangue is thrown and to be removed.After the ore behind the tailings discarding by preconcentration is in small, broken bits, through ore grinding 1 ore is ground into-0.074mm accounts for 35～50%.Ore pulp divides and elects magnetic part and nonmagnetic portion as through wet magnetic separation 1 (magnetic separation of low-intensity magnetic field intensity).Magnetic part through ore grinding 2 ore is ground into-0.074mm surpasses 90%, with wet magnetic separation 2 (magnetic separation of high-intensity magnetic field intensity) the high-grade boron concentrate separated with iron ore concentrate.
Nonmagnetic portion adopts the water gravity separator that the boron concentrate take boromagnesite as essential mineral is separated with gangue.
Each boron concentrate in the ore dressing is merged into same boron concentrate, can be directly used in carbon alkali method for producing borax behind the boron concentrate calcination for activation.The calcination for activation temperature is 700～900 ℃, roasting time 1.0～2.0 hours, B after the roasting
2O
3Activation rate can reach more than 85%, and roasting condition is loose, the kinds of processes equipment all can be used as roasting apparatus.
Boron-containing iron concentrate has following three kinds of purposes: can be used for Iron industry and produce low pig iron containing boron raw material, boron-containing iron concentrate is through sintering or pelletizing agglomeration, can obtain the B pig iron (containing B 0.1～0.3%) with blast furnace process, this B of the containing pig iron can replace the part of boron ferroalloy as the raw material use of wear resistance castings; Boron-containing iron concentrate can be used as the boron-containing additive utilization that sintering deposit and pellet are produced in the Iron industry.Boron-containing iron concentrate can also utilize the selective reduction principle, takes direct-reduction-fusing separating technology to carry out separating of effective iron and boron, obtains to contain B iron or do not contain B iron and the boron-rich slag of high-grade high activity.
Claims (2)
1, the method for a kind of paigeite magnetic-gravity treatment comprehensive utilization of separation, it is characterized in that adopting stage grinding, staged magnetic separation, magnetic separation-gravity treatment beneficiation combined method that boron in the paigeite is separated with iron, from paigeite, produce boron concentrate and boron-containing iron concentrate, the gained boron concentrate by calcination for activation after wherein diboron trioxide be directly used in carbon alkali method for producing borax; The gained boron-containing iron concentrate can adopt direct reduction one fusing separation of produced steel products and the rich boron slag of high activity, also can be used as boron-containing additive and be used for iron-smelting raw material, can also go into blast furnace process through agglomeration as body material, produce low boron pig iron containing boron, its main technique step and technological parameter:
With crushing raw ore to 20～below the 30mm, by magnetic separation non magnetic gangue is thrown and to be removed, after the ore behind the tailings discarding by preconcentration is in small, broken bits, through ore grinding 1 ore is ground into-0.074mm accounts for 35～50%, ore pulp was elected magnetic part and nonmagnetic portion in 1 minute as through wet magnetic separation;
Magnetic part through ore grinding 2 ore is ground into-0.074mm surpasses 90%, with wet magnetic separation 2 the high-grade boron concentrate separated with iron ore concentrate;
Nonmagnetic portion adopts the water gravity separator that the boron concentrate take boromagnesite as essential mineral is separated with gangue;
Each boron concentrate in the ore dressing is merged into same boron concentrate, calcination for activation, the calcination for activation temperature is 700～900 ℃, roasting time 1.0～2.0 hours, the boron concentrate behind the calcination for activation is directly used in carbon alkali method for producing borax;
Boron-containing iron concentrate can be used for: a. Iron industry is produced low pig iron containing boron raw material, hangs down the boron pig iron containing boron through sintering or pelletizing agglomeration with blast furnace process; B. the boron-containing additive of producing as sintering deposit in the Iron industry and pellet; C. adopt direct-reduction-fusing separating technology to carry out separating of iron and boron, obtain containing boron, iron, not containing boron, iron and the highly active boron-rich slag of high-grade.
2, the method for paigeite magnetic according to claim 1-gravity treatment comprehensive utilization of separation, it is characterized in that it is to adopt the method for oxygen position in the control slag that said boron-containing iron concentrate directly reduces-melt the rich boron slag of separation of produced steel products and high activity technology, the content of ferrous oxide solves in the control slag.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109097 CN1374150A (en) | 2002-01-28 | 2002-01-28 | Magnetic and gravitational separation and comprehensive utilization of vonsenite |
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|---|---|---|---|
| CN 02109097 CN1374150A (en) | 2002-01-28 | 2002-01-28 | Magnetic and gravitational separation and comprehensive utilization of vonsenite |
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| CN1374150A true CN1374150A (en) | 2002-10-16 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296504C (en) * | 2004-09-01 | 2007-01-24 | 东北大学 | Method for smelting boron steel directly from pig iron containing boron |
| CN1311910C (en) * | 2005-07-07 | 2007-04-25 | 东北大学 | Ore dressing method for paigeite |
| CN102228864A (en) * | 2010-07-09 | 2011-11-02 | 鞍钢集团矿业公司 | Novel paigeite separation process |
| CN102344981A (en) * | 2011-09-22 | 2012-02-08 | 李志忠 | Separation and direct reduction process of iron and boron in boron-containing iron ore concentrate |
| CN103623916A (en) * | 2013-11-26 | 2014-03-12 | 中南大学 | Fine-grain-rutile tailing-discarding and desliming technology |
| CN103937960A (en) * | 2014-04-08 | 2014-07-23 | 东北大学 | Staged reduction method of boron-containing iron ore concentrate |
| CN104258980A (en) * | 2014-09-15 | 2015-01-07 | 中冶北方（大连）工程技术有限公司 | Uranium-bearing paigeite separating process |
| CN106733136A (en) * | 2016-11-17 | 2017-05-31 | 北京科技大学 | Method for separating and concentrating containing boron mineral in a kind of Boron Slag |
| CN106978530A (en) * | 2017-03-21 | 2017-07-25 | 江苏省冶金设计院有限公司 | Boron-magnesium compound additives and its production and use |
| CN107159402A (en) * | 2017-05-15 | 2017-09-15 | 东北大学 | A kind of technique of two-stage method mechanical activation boron concentrate |
| CN108144743A (en) * | 2016-12-05 | 2018-06-12 | 辽宁首钢硼铁有限责任公司 | Using the low-grade uranium ferro-boron associated minerals ore-dressing technique method of high-pressure roller mill |
| CN111672582A (en) * | 2020-07-10 | 2020-09-18 | 南京坤元材料有限公司 | Steel slag activation technology |
| CN113522518A (en) * | 2021-06-30 | 2021-10-22 | 韶关市青绿环保科技有限公司 | Water quenching kiln slag treatment method |
| CN115646649A (en) * | 2022-10-14 | 2023-01-31 | 东北大学 | Fine step-by-step separation method of sedimentary metamorphic paigeite |
-
2002
- 2002-01-28 CN CN 02109097 patent/CN1374150A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296504C (en) * | 2004-09-01 | 2007-01-24 | 东北大学 | Method for smelting boron steel directly from pig iron containing boron |
| CN1311910C (en) * | 2005-07-07 | 2007-04-25 | 东北大学 | Ore dressing method for paigeite |
| CN102228864A (en) * | 2010-07-09 | 2011-11-02 | 鞍钢集团矿业公司 | Novel paigeite separation process |
| CN102344981A (en) * | 2011-09-22 | 2012-02-08 | 李志忠 | Separation and direct reduction process of iron and boron in boron-containing iron ore concentrate |
| CN103623916A (en) * | 2013-11-26 | 2014-03-12 | 中南大学 | Fine-grain-rutile tailing-discarding and desliming technology |
| CN103937960A (en) * | 2014-04-08 | 2014-07-23 | 东北大学 | Staged reduction method of boron-containing iron ore concentrate |
| CN104258980A (en) * | 2014-09-15 | 2015-01-07 | 中冶北方（大连）工程技术有限公司 | Uranium-bearing paigeite separating process |
| CN106733136A (en) * | 2016-11-17 | 2017-05-31 | 北京科技大学 | Method for separating and concentrating containing boron mineral in a kind of Boron Slag |
| CN108144743A (en) * | 2016-12-05 | 2018-06-12 | 辽宁首钢硼铁有限责任公司 | Using the low-grade uranium ferro-boron associated minerals ore-dressing technique method of high-pressure roller mill |
| CN106978530A (en) * | 2017-03-21 | 2017-07-25 | 江苏省冶金设计院有限公司 | Boron-magnesium compound additives and its production and use |
| CN107159402A (en) * | 2017-05-15 | 2017-09-15 | 东北大学 | A kind of technique of two-stage method mechanical activation boron concentrate |
| CN107159402B (en) * | 2017-05-15 | 2019-02-05 | 东北大学 | A kind of technique of two-stage method mechanical activation boron concentrate |
| CN111672582A (en) * | 2020-07-10 | 2020-09-18 | 南京坤元材料有限公司 | Steel slag activation technology |
| CN113522518A (en) * | 2021-06-30 | 2021-10-22 | 韶关市青绿环保科技有限公司 | Water quenching kiln slag treatment method |
| CN113522518B (en) * | 2021-06-30 | 2023-10-31 | 韶关市青绿环保科技有限公司 | Water quenching kiln slag treatment method |
| CN115646649A (en) * | 2022-10-14 | 2023-01-31 | 东北大学 | Fine step-by-step separation method of sedimentary metamorphic paigeite |
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