CN101049584A - Method for demagging from phosphate ore - Google Patents
Method for demagging from phosphate ore Download PDFInfo
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- CN101049584A CN101049584A CN 200710065792 CN200710065792A CN101049584A CN 101049584 A CN101049584 A CN 101049584A CN 200710065792 CN200710065792 CN 200710065792 CN 200710065792 A CN200710065792 A CN 200710065792A CN 101049584 A CN101049584 A CN 101049584A
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- flotation
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Abstract
A process for removing Mg from phosphorus ore in order to prepare phosphoric acid by wet method features use of static microbubble floatation column, and includes such steps as breaking the crude phosphorus ore, grinding, classifying, mineralizing by mixing the reverse floatation chemical with ore sludge, and floatating in said static microbubble floatation column while conditioning the ore sludge to obtain the bubble-phase tailings and low-Mg phosphorus ore concentrate from the column bottom.
Description
Technical field
The invention relates to the method that rock phosphate in powder removes impurity, more particularly, is a kind of new method of removing magnesium addition from rock phosphate in powder.
Background technology
In the Wet-process Phosphoric Acid Production process, the magnesium addition in the phosphorus ore not only affects the production of phosphoric acid by wet process, and deep processing and the product quality indicator of phosphoric acid had obvious impact.China's Wet-process Phosphoric Acid Production has reached 5,000,000 tons of (P
2O
5) production capacity, the solution of demagging from phosphate ore technical problem, be related to the development of China's high-concentration phosphate compound fertilizers industry and even whole chemical fertilizer industry, with domestic and international phosphoric acid by wet process and the multiple fertile quality requirement of producing the phosphorus ore of determining of phosphorus, the rock phosphate in powder imurity-removal comprises the rock phosphate in powder enrichment method, two parts of rock phosphate in powder impurity removal, wherein rock phosphate in powder magnesia (MgO) should be controlled at below 1.5%.
Demagging from phosphate ore mainly adopts the reverse floatation process of conventional mechanical agitation type flotation machine at present, although its technology is ripe, but the deficiencies such as long flow path, operation control is complicated, installed capacity is big, operating cost is high, floor space is big, cause phosphorus ore concentrate production cost height, affected the multiple fertile economic benefit of downstream product phosphoric acid by wet process and phosphorus.This is domestic and international unresolved for a long time technical barrier.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art part, a kind of process that can efficiently remove magnesium addition in the phosphorus ore is provided.
Purpose of the present invention is achieved by the following technical programs.
* except as otherwise noted, percentage of the present invention is percetage by weight.
The invention provides a kind of phosphorus ore and remove the method for magnesium, this method adopts following technical process:
1. selecting microbubble floatation column is that phosphorus ore is removed magnesia (MgO) floatation separator;
2. the phosphorus ore raw ore is through fragmentation, ore grinding and classification, and the control mog is-150～200 orders 〉=85%, and control phosphorus ore pulp density is 20%～45%;
3. the ore pulp of step 2 is introduced in the mineralising groove, and the conventional reverse floatation agent of adding fully mixes with ore pulp;
4. the gains of step 3 are introduced in the microbubble floatation column, adopted the reverse floatation process flow process;
5. ore pulp enters flotation column through being positioned at one or more that flotation column shaft middle and upper part divides to the ore deposit point, and the rising group of the tiny bubble that produces along gas foaming device system is descending; The particle that contains magnesium that bumps with bubble or adhere to will rise to the top of flotation column, finally arrive the interface between ore pulp collecting district and the foam clear area, ore deposit and will discharge outside the post, thereby reach the effect of removing magnesium addition in the phosphorus ore;
6. the particle that drops to flotation column bottom is low magnesium phosphorus concentrate, discharges post after concentration and settlement, obtain finished product phosphorus concentrate pulp, as phosphoric acid by wet process and the multiple fertile raw materials for production of phosphorus.
Wherein, P in the described phosphorus ore raw ore
2O
5Grade is that 18%～30%, MgO content is 2%～8%; Described flotation column is static microbubble floatation column.
The rock phosphate in powder of treated mistake, P
2O
5Grade can improve 3%～10%, MgO content and be lower than 1.5%, and phosphorous recovery is greater than 85%.
Selected material is identical with the selected material of Conventional flotation in the floatation process of the present invention, the medicament kind that adopts is identical with the medicament of Conventional flotation technology, flotation collector is soap class or fatty acid collecting agent commonly used, and depressing agent is the mixture of sulfuric acid, phosphoric acid or two kinds of acid.
Compared with prior art, the present invention has following beneficial effect:
1. compare advantage with traditional flotation device outstanding for static microbubble floatation column: 1. device structure is simple, and disposal ability is big, and floor space is little, and the output investment ratio flotation device is saved more than 20%; 2. installed capacity is little, energy consumption is low, and is easy and simple to handle, and vulnerable part is few, and dosing is economized, and production cost is low, compares operating cost with flotation device and can reduce by 30%～50%; 3. flotation efficiency height, operation number of times and circulation ore deposit amount are few, and process simplification is easily realized automation.A pillar detached job can replace 3～5 subjobs of flotation device; 4. have the incomparable selected district of flotation device, the concentration ratio height is adapted to handle the big floatation process of flotation froth amount;
2. flotation column has ore deposit foam purging system.The ore deposit foam cleans the useless mineral that can further remove on the foam of flotation ore deposit.The wash water that adds from the flotation column top filters through ore deposit foam district, the particle of sneaking between the flushable foam.Different with floatation equipment commonly used, flotation column does not adopt mechanical agitation, operation movement-less part.Superseded high degree of agitation can improve selectively, and helps to reclaim thick particle.The outer charger of post can be regulated aeration quantity arbitrarily.
3. the present invention is applied to the demagging of phosphorus ore reverse flotation with static microbubble floatation column, forms reverse flotation demagging new method thus; Because a column-type floatation detached job can replace repeatedly conventional flotation operation, in addition, static microbubble floatation column is used for the demagging of phosphorus ore reverse flotation can fully satisfy the big and little requirement of aeration quantity of reverse flotation demagging process foam volume.With Conventional flotation technology ratio, reagent consumption can reduce by 10%～20%, and the water consumption can reduce by 20%～40%, and power consumption can reduce by 30%～50%, can take full advantage of the phosphate rock resource of China's abundant, reduces the flotation production cost, improves Business Economic Benefit.Has the excellent development application prospect.
Description of drawings
Fig. 1 is the single reverse flotation flowsheet schematic diagram that the present invention adopts;
Fig. 2 is the thick Seiko process flow schematic diagram that the present invention adopts.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail, but they are not the qualification to protection domain of the present invention.
Embodiment 1
Mining area, Yunnan sample ore, raw ore P
2O
5Grade 26.83%, MgO content 3.91%.Adopt a flotation column, technological process is reverse flotation (seeing Fig. 1).Mog is-200 orders 94%, and ore milling concentration 34%, flotation temperature are about 20 ℃, adds nitration mixture 4.0kg/t, fatty acid collecting agent 2.5kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 30.41%, MgO content 1.37%, P
2O
5The rate of recovery reaches 90.04%, MgO elimination factor and reaches 72.17%.
Embodiment 2
Sample ore is with embodiment 1, i.e. raw ore P
2O
5Grade 26.83%, MgO content 3.91%.Adopt a flotation column, technological process is reverse flotation (seeing Fig. 1).Mog is-200 orders 94%, and ore milling concentration 34%, flotation temperature are about 20 ℃, adds nitration mixture 4.0kg/t, fatty acid collecting agent 2.5kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 31.02%, MgO content 1.18%, P
2O
5The rate of recovery reaches 94.80%, MgO elimination factor and reaches 76.25%.
Embodiment 3
Sample ore is with embodiment 1, i.e. raw ore P
2O
5Grade 26.83%, MgO content 3.91%.Adopt two flotation columns.Technological process is a thick Seiko skill (see figure 2).Mog is-200 orders 94%, and ore milling concentration 34%, flotation temperature are about 20 ℃, adds nitration mixture 4.0kg/t, collecting agent 2.5kg/t; The bis flotation column parameter is to add nitration mixture 0.5kg/t, fatty acid collecting agent 0.3kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 32.84%, MgO content 0.78%, P
2O
5The rate of recovery reaches 90.69%, MgO elimination factor and reaches 85.22%.
Embodiment 4
Sample ore is with embodiment 1, i.e. raw ore P
2O
5Grade 26.83%, MgO content 3.91%.Adopt two flotation columns.Technological process is a thick Seiko skill (see figure 2).Mog is-200 orders 94%, and ore milling concentration 34%, flotation temperature are about 20 ℃, adds nitration mixture 4.0kg/t, fatty acid collecting agent 2.5kg/t; Bis flotation adds nitration mixture 0.5kg/t, fatty acid collecting agent 0.3kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 33.67%, MgO content 0.70%, P
2O
5The rate of recovery reaches 90.48%, MgO elimination factor and reaches 87.09%.
Embodiment 5
Mining area, Anning sample ore, raw ore P
2O
5Grade 22.30%, MgO content 2.42%.Adopt a flotation column, technological process is reverse flotation (seeing Fig. 1).Mog is-200 orders 90%, and ore milling concentration 28%, flotation temperature are about 20 ℃, adds nitration mixture 5.0kg/t, fatty acid collecting agent 2.2kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 30.54%, MgO content 0.78%, P
2O
5The rate of recovery reaches 82.17%, MgO elimination factor and reaches 80.66%.
Embodiment 6
Sample ore is with embodiment 5, i.e. raw ore P
2O
5Grade 22.30%, MgO content 2.42%.Adopt two flotation columns, technological process is a thick Seiko skill (seeing Fig. 2).Mog is-200 orders 92%, and ore milling concentration 28%, flotation temperature are about 20 ℃, and one section flotation column parameter is for adding nitration mixture 5.0kg/t, fatty acid collecting agent 2.2kg/t; The bis flotation column parameter is for adding nitration mixture 0.4kg/t, fatty acid collecting agent 0.3kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 31.84%, MgO content 0.71%, P
2O
5The rate of recovery reaches 80.13%, MgO elimination factor and reaches 83.57%.
Embodiment 7
Mining area, Yunnan sample ore, raw ore P
2O
5Grade 25.64%, MgO content 4.35%.Adopt a flotation column, technological process is reverse flotation (seeing Fig. 1).Mog is-200 orders 91%, and ore milling concentration 32%, flotation temperature are about 20 ℃, adds sulfuric acid 7.0kg/t, collecting agent 2.6kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 30.36%, MgO content 0.98%, P
2O
5The rate of recovery reaches 88.80%, MgO elimination factor and reaches 83.10%.
Embodiment 8
Sample ore is with embodiment 7, i.e. raw ore P
2O
5Grade 25.64%, MgO content 4.35%.Adopt two flotation columns, technological process is a thick Seiko skill (seeing Fig. 2).Mog is-200 orders 92%, and ore milling concentration 32%, flotation temperature are about 20 ℃, and one section flotation column parameter is for adding sulfuric acid 7.0kg/t, fatty acid collecting agent 2.6kg/t; The bis flotation column parameter is for adding sulfuric acid 0.3kg/t, fatty acid collecting agent 0.2kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 32.24%, MgO content 0.74%, P
2O
5The rate of recovery reaches 90.53%, MgO elimination factor and reaches 87.75%.
Embodiment 9
Dongchuan District, Yunnan Province mining area sample ore, raw ore P
2O
5Grade 27.16%, MgO content 4.08%.Adopt a flotation column, technological process is reverse flotation (seeing Fig. 1).Mog is-200 orders 90%, and ore milling concentration 32%, flotation temperature are about 20 ℃, adds nitration mixture 5.0kg/t, fatty acid collecting agent 3.0kg/t; P after the rear flotation
2O
5Grade 31.96%, MgO content 1.12%, P
2O
5The rate of recovery reaches 89.43%, MgO elimination factor 79.14%.
Embodiment 10
Sample ore is with embodiment 9, i.e. raw ore P
2O
5Grade 27.16%, MgO content 4.08%.Adopt two flotation columns, technological process is a thick Seiko skill (seeing Fig. 2).Mog is-200 orders 90%, and ore milling concentration 30%, flotation temperature are about 20 ℃, and one section flotation column parameter is for adding nitration mixture 5.0kg/t, fatty acid collecting agent 2.6kg/t; The bis flotation column parameter is to add nitration mixture 0.3kg/t, fatty acid collecting agent 0.3kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 32.94%, MgO content 0.74%, P
2O
5The rate of recovery reaches 91.44%, MgO elimination factor and reaches 86.33%.
Embodiment 11
Adopt and mix sample ore, mix ore deposit P
2O
5Grade 18.94%, MgO content 3.21%.Adopt two flotation columns, technological process is a thick Seiko skill (seeing Fig. 2).Mog is-200 orders 〉=94%, and ore milling concentration 34%, flotation temperature are about 20 ℃, and one section flotation adds nitration mixture 6.0kg/t, fatty acid collecting agent 3.4kg/t; Bis flotation adds nitration mixture 0.5kg/t, fatty acid collecting agent 0.4kg/t, phosphorus concentrate P behind the reverse flotation
2O
5Grade 25.78%, MgO content 0.76%, P
2O
5The rate of recovery reaches 88.47%, MgO elimination factor and reaches 85.83%.
Claims (4)
1. the method for a demagging from phosphate ore is characterized in that this method adopts the step of following order:
(1) selecting microbubble floatation column is floatation separator;
(2) with the phosphorus ore raw ore through broken, ore grinding and classification, mog be-200 orders 90%, makes the mineral composition monomer dissociation, controlling pulp density is 25%～45%;
(3) ore pulp of step (2) is introduced in the mineralising groove, and the conventional reverse floatation agent of adding fully mixes with ore pulp;
(4) gains of step 3 are introduced in the described microbubble floatation column, adopted a single reverse flotation flowsheet or a thick Seiko process flow;
(5) ore pulp enters flotation column through being positioned at one or more that flotation column shaft middle and upper part divides to the ore deposit point, and the rising group of the tiny bubble that produces along gas foaming device system is descending.The particle that contains magnesium that bumps with bubble or adhere to will rise to the top of flotation column, finally arrive the interface between ore pulp collecting district and the foam clear area, ore deposit and will discharge outside the post, thereby reach the effect of demagging;
(6) particle that drops to flotation column bottom is low magnesium phosphorus concentrate, discharges post after concentrate, filter, be drying to obtain finished product phosphorus concentrate.
2. the method for demagging from phosphate ore according to claim 1 is characterized in that P in the described phosphorus ore raw ore
2O
5Grade is that 18%～30%, MgO content is 2%～8%; The rock phosphate in powder of treated mistake, P
2O
5Grade can improve 3%～10%, MgO content and be lower than 1.5%, and phosphorous recovery is greater than 90%.
3. the method for demagging from phosphate ore according to claim 1 is characterized in that described flotation column is a static microbubble floatation column, and aeration quantity is 5～20L/min in the floatation process.
4. the method for demagging from phosphate ore according to claim 1 is characterized in that the medicament kind that adopts is identical with the medicament of Conventional flotation technology, and namely inhibitor is sulfuric acid, phosphoric acid or both mixtures; Collecting agent is soap class or fatty acid collecting agent commonly used.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100657920A CN100542679C (en) | 2007-04-09 | 2007-04-09 | A kind of method of demagging from phosphate ore |
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|---|---|---|---|
| CNB2007100657920A CN100542679C (en) | 2007-04-09 | 2007-04-09 | A kind of method of demagging from phosphate ore |
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| CN100542679C CN100542679C (en) | 2009-09-23 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476049B (en) * | 2009-01-05 | 2010-06-09 | 昆明理工大学 | Method for removing magnesium from metallic ore |
| CN101648704B (en) * | 2008-08-12 | 2011-10-19 | 中国海洋石油总公司 | Magnesium reduction method for phosphorite |
| CN102716799A (en) * | 2012-06-14 | 2012-10-10 | 昆明川金诺化工股份有限公司 | Process method for removing phosphate impurities by combining gravity, centrifugal force and flotation |
| CN101722112B (en) * | 2010-01-12 | 2013-02-13 | 中南大学 | Process for performing sulfide ore flotation by using liquid carbon dioxide |
| CN103950908A (en) * | 2014-04-04 | 2014-07-30 | 贵阳中化开磷化肥有限公司 | Method for fluidization removal of magnesium from phosphate ore |
| CN111036411A (en) * | 2019-11-27 | 2020-04-21 | 东北大学 | Application of inhibitor acrylic acid maleic acid copolymer sodium salt in flotation and demagging of phosphate ore |
| CN111451004A (en) * | 2020-04-20 | 2020-07-28 | 武汉工程大学 | Method for producing phosphate concentrate and byproducts α -hemihydrate gypsum and magnesium carbonate from calcium collophanite |
| CN112619885A (en) * | 2020-12-25 | 2021-04-09 | 贵州川恒化工股份有限公司 | Beneficiation method for magnesium-containing high-silicon calcium collophanite |
| WO2023216690A1 (en) * | 2022-05-11 | 2023-11-16 | 中国矿业大学 | Whole size-fraction sorting pre-enrichment system and process for coal-series co-associated mineral gallium lithium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389863A (en) * | 2011-09-30 | 2012-03-28 | 昆明川金诺化工股份有限公司 | Method for performing flotation on low-grade phosphate ores by taking H2SiF6 as auxiliary flotation regulator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU986504A1 (en) * | 1981-07-10 | 1983-01-07 | Предприятие П/Я Р-6767 | Phosphate ore flotation method |
| US4851036A (en) * | 1987-08-06 | 1989-07-25 | Mobil Oil Corporation | Mineral ore flotation process and apparatus |
| US6056125A (en) * | 1997-07-08 | 2000-05-02 | U. S. Department Of Energy | Cross flow cyclonic flotation column for coal and minerals beneficiation |
| CN2378129Y (en) * | 1999-07-23 | 2000-05-17 | 夏新华 | Static microfoam flotation column |
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2007
- 2007-04-09 CN CNB2007100657920A patent/CN100542679C/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648704B (en) * | 2008-08-12 | 2011-10-19 | 中国海洋石油总公司 | Magnesium reduction method for phosphorite |
| CN101476049B (en) * | 2009-01-05 | 2010-06-09 | 昆明理工大学 | Method for removing magnesium from metallic ore |
| CN101722112B (en) * | 2010-01-12 | 2013-02-13 | 中南大学 | Process for performing sulfide ore flotation by using liquid carbon dioxide |
| CN102716799A (en) * | 2012-06-14 | 2012-10-10 | 昆明川金诺化工股份有限公司 | Process method for removing phosphate impurities by combining gravity, centrifugal force and flotation |
| CN103950908A (en) * | 2014-04-04 | 2014-07-30 | 贵阳中化开磷化肥有限公司 | Method for fluidization removal of magnesium from phosphate ore |
| CN103950908B (en) * | 2014-04-04 | 2016-07-06 | 贵州开磷集团股份有限公司 | A kind of method of rock phosphate in powder fluidization de-magging |
| CN111036411A (en) * | 2019-11-27 | 2020-04-21 | 东北大学 | Application of inhibitor acrylic acid maleic acid copolymer sodium salt in flotation and demagging of phosphate ore |
| CN111036411B (en) * | 2019-11-27 | 2021-01-01 | 东北大学 | Application of inhibitor acrylic acid maleic acid copolymer sodium salt in flotation and demagging of phosphate ore |
| CN111451004A (en) * | 2020-04-20 | 2020-07-28 | 武汉工程大学 | Method for producing phosphate concentrate and byproducts α -hemihydrate gypsum and magnesium carbonate from calcium collophanite |
| CN112619885A (en) * | 2020-12-25 | 2021-04-09 | 贵州川恒化工股份有限公司 | Beneficiation method for magnesium-containing high-silicon calcium collophanite |
| WO2023216690A1 (en) * | 2022-05-11 | 2023-11-16 | 中国矿业大学 | Whole size-fraction sorting pre-enrichment system and process for coal-series co-associated mineral gallium lithium |
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| CN100542679C (en) | 2009-09-23 |
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