CN101791592B - Positive flotation method of low grade refractory phosphate ores - Google Patents
Positive flotation method of low grade refractory phosphate ores Download PDFInfo
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Abstract
The invention relates to a positive flotation method of low grade refractory phosphate ores. The method comprises the following specific steps: 1. crushing and grinding ores: grinding raw ore according to the grinding density of 1:1 to -0.074mm of 55-60% tailings discarding fineness; 2. performing positive flotation: firstly, roughing, namely adding depressant sodium carbonate, big modulus sodiumsilicate and collector ZJ oleic acid composite, stirring to obtain roughing concentrate, roughing middlings and roughing tailings; secondly, concentrating, namely adding big modulus sodium silicate in the roughing concentrate to perform 3-4 times of concentrations and obtain concentrating middlings and phosphorus product concentrate; thirdly, scavenging, namely adding ZJ oleic acid composite in the roughing tailings to perform 2-3 times of scavengings and obtain scavenging middlings and tailings; and 3. regrinding and reprocessing, namely further dissociating ores, and reprocessing to obtain tailings and residual phosphorus concentrate. The invention is characterized in that the ore grinding cost is low, the dosage of reagents is low, the ZJ oleic acid composite is easy to prepare and is convenient to use, the separating effect of phosphorus ores and gangue mineral is obvious, the separation indexes are good, etc; and the method is especially suitable to be used in the flotation of silicon-poor deposition-calcium phosphorite type phosphate ores with a concentration of P2O5 of less than 20%.
Description
One. technical field
The present invention relates to the direct flotation method that a kind of low-grade refractory selects phosphorus ore, be particularly suitable for P
2O
5The flotation of＜20% poor depositing silicon-calcareous phosphorite class rock phosphate in powder.
Two. background technology
Low-grade refractory selects phosphorus ore to be meant to contain P
2O
5＜20% depositing silicon-calcareous phosphorite class rock phosphate in powder; Thin because of its disseminated grain size, the phosphorus ore thing is difficult with the monomer dissociation of gangue mineral; Simultaneously; Gangue mineral not only contains silicate mineral, also contains the calcareous mineral close with the apatite floatability such as dolomite, calcite, makes its sorting become complicated and difficulty.Because this type of rock phosphate in powder grade is low, the unit ore is worth little simultaneously, and is high as if adopting complicated technology flow process and General Medicine system beneficiation cost, also must lose more than gain economically.
At present, handling the type rock phosphate in powder is main with floatation still, like single fine grinding direct flotation, just-reverse flotation, anti--direct flotation and two reverse floatation process etc., its technological process is respectively: single fine grinding direct floatation process promptly adds Na
2CO
3, Na
2SiO
3Deng inhibition silicate, anion collecting agent flotation phosphate hydrochlorate; Just-and reverse flotation, promptly add Na
2CO
3, Na
2SiO
3Deng inhibition silicate, carbonate minerals such as anion collecting agent flotation phosphate hydrochlorate and calcic magnesium, and then use H
2SO
4Or H
3PO
4The pH value is transferred to 5.5～6.0 to suppress phosphate, anion collecting agent reverse flotation carbonate mineral; Instead-and direct flotation, promptly use H earlier
2SO
4Or H
3PO
4Suppress the phosphorus ore thing, carbonate minerals such as anion collecting agent reverse flotation dolomite are used lime, Na then
2CO
3, Na
2SiO
3Deng suppressing silicate mineral with anion collecting agent direct flotation phosphate mineral; Two reverse flotations are promptly used H earlier
2SO
4Or H
3PO
4Suppress the phosphorus ore thing, carbonate minerals such as anion collecting agent reverse flotation dolomite, ore pulp is used cation-collecting agent reverse flotation silicate mineral again after desliming then.But owing to lack effective gangue inhibitor and the good collecting agent of selectivity, single fine grinding direct flotation, just-reverse flotation, instead-technologies such as direct flotation all are difficult to obtain good separating effect.And high, the soda ash consumption of disposable fine grinding cost is up to problems such as 5～7kg/t, phosphorus concentrate quality are not high when having traditional direct flotation; Two reverse flotation sorting process are immature so far, the good high-effective cationic collecting agent of selectivity and ore-dressing technique are still needed do further research especially.
Application number is that 200810143185.6 patent of invention discloses a kind of crystallite and cryptocrystal low grade collophanite ore-dressing technique, and its processing step and condition are: (1) ore reduction, and wet-milling to-200 order content are the fineness of 90-92%; (2) floatation desliming; (3) phosphate direct flotation; (4) it is final products phosphorus concentrate that carbonate reverse flotation, reverse flotation are scanned the interior product of post-job groove.Though the separation index that this invention obtains is better, there are technological process complicacy, the high deficiency of beneficiation cost equally.Application number is that to disclose a kind of new and effective phosphorus ore flotation depressor sulfomethylated derivative of calcium lignosulfonate be that L-339 is used for low-grade refractory and selects phosphate rock floating for 87101820 patent of invention; Can reach good floatation indicators; But this sulfomethylated derivative of calcium lignosulfonate complicated process of preparation; From market, can not purchase on a large scale, use relatively difficulty in the industry.All there are shortcomings such as complex process, separating effect are poor, sorting cost height in various degree in prior art in a word.
Therefore, seek a kind of can reaching and reduce beneficiation cost, reduce dosing, effectively sort the method for floating of phosphorus ore thing again, be significant for the ore dressing of low-grade appositional pattern phosphorus piece stone.
Three. summary of the invention
The purpose of this invention is to provide that a kind of corase grind is thrown tail, chats is regrinded, adopt dosing little, good separation effect is the process of direct flotation phosphorus ore thing at normal temperatures.
1. for realizing above-mentioned purpose; Method of the present invention is to add one or more the medicament in sodium carbonate, soluble glass of high modulus, the ZJ oleic acid compsn at normal temperatures with in the single direct floatation process step; Described ZJ oleic acid compsn is the mixture that comprises soybean oleic acid, C12～C18 high-carbon fatty alcohol and AE nonionic surface active agent, specifically comprises following processing steps in sequence and condition:
A. broken ore grinding is milled to raw ore-the throwing tail fineness of 0.074mm 55～60% by 1: 1 ore milling concentration;
B. direct flotation:
B1. roughly select; Add inhibitor sodium carbonate 1000～2000g, soluble glass of high modulus 200～500g by raw ore per ton, directly added collecting agent ZJ oleic acid compsn 80 or 90g after sizing mixing 10 minutes, stirred 2～10 minutes; Roughly select, select and roughly select concentrate, roughly select chats and rougher tailings;
B21. selected, add soluble glass of high modulus 30～60g to roughly selecting concentrate by raw ore per ton, carry out 3～4 times selected, select selected chats and product phosphorus concentrate;
B22. scan, add ZJ oleic acid compsn 20～40g by raw ore per ton, carry out 2～3 times and scan, select and scan chats and mine tailing to rougher tailings;
C. regrinding and reconcentration, with selected chats, scan chats and merge ore grinding and to-0.074mm 85-90%, add soluble glass of high modulus 20g, ZJ oleic acid compsn 10～20g by raw ore per ton, true tailings and final phosphorus concentrate are selected in choosing again after further dissociating.
Described ZJ oleic acid compsn contains 50～60% soybean oleic acid, 30～40%C12～C18 high-carbon fatty alcohol, 1～10%AE nonionic surface active agent by composition weight meter.
Described soluble glass of high modulus is m: 3.1.
Advantage of the present invention:
1. the ore grinding cost is low, and the ore grinding cost ore deposit per ton that more disposable being finely ground to-0.074mm throws tail for 80～85% times reduces by 10～15 yuan.
2. dosing is little, and dosing is 1/3～1/5 of traditional dosing.
3. emulsification in advance, easy to use is prepared easily, need not to collecting agent ZJ oleic acid compsn.
4. phosphorus ore thing and the gangue mineral separating effect is remarkable, separation index good is high by 10～15% than the traditional handicraft phosphorus concentrate rate of recovery, P
2O
5Of high grade 3～5%.
Four. description of drawings
Fig. 1 is the direct flotation method process chart that a kind of low-grade refractory of the proposition according to the present invention selects phosphorus ore.
Five. the specific embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail:
With reference to Fig. 1; Be to add one or more the medicament in sodium carbonate, soluble glass of high modulus, the ZJ oleic acid compsn at normal temperatures with in the single direct floatation process step; Described ZJ oleic acid compsn is the mixture that comprises soybean oleic acid, C12～C18 high-carbon fatty alcohol and AE nonionic surface active agent
Specifically comprise following processing steps in sequence and condition:
A. broken ore grinding is milled to raw ore-the throwing tail fineness of 0.074mm 55～60% by 1: 1 ore milling concentration;
B. direct flotation:
B1. roughly select; Add inhibitor sodium carbonate 1000～2000g, soluble glass of high modulus 200～500g by raw ore per ton, directly added collecting agent ZJ oleic acid compsn 80 or 90g after sizing mixing 10 minutes, stirred 2～10 minutes; Roughly select, select and roughly select concentrate, roughly select chats and rougher tailings;
B21. selected, add soluble glass of high modulus 30～60g to roughly selecting concentrate by raw ore per ton, carry out 3～4 times selected, select selected chats and product phosphorus concentrate;
B22. scan, add ZJ oleic acid compsn 20～40g by raw ore per ton, carry out 2～3 times and scan, select and scan chats and mine tailing to rougher tailings;
C. regrinding and reconcentration, with selected chats, scan chats and merge ore grinding and to-0.074mm 85-90%, add soluble glass of high modulus 20g, ZJ oleic acid compsn 10～20g by raw ore per ton, true tailings and final phosphorus concentrate are selected in choosing again after further dissociating.
Described ZJ oleic acid compsn contains 50～60% soybean oleic acid, 30～40%C12～C18 high-carbon fatty alcohol, 1～10%AE nonionic surface active agent by composition weight meter.
Described soluble glass of high modulus is m: 3.1.
Embodiment 1: the rock phosphate in powder raw ore contains P
2O
59.82%, press the listed regime of agent of table 1, after adding sodium carbonate, soluble glass of high modulus successively and sizing mixing, add collecting agent ZJ oleic acid compsn again; Stirred 2 minutes, warp is roughly selected for 1 time, and 3 times selected; Scan for 2 times, essence scan merge chats once more behind the ore grinding 1 direct flotation roughly select, obtain containing P
2O
527.28%, the phosphorus concentrate of the rate of recovery 84.97%.
Embodiment 2: the rock phosphate in powder raw ore contains P
2O
514.12%, press the listed regime of agent of table 1, after interpolation sodium carbonate, soluble glass of high modulus are sized mixing, add collecting agent ZJ oleic acid compsn; Stirred 2 minutes, warp is roughly selected for 1 time, and 3 times selected; Scan for 2 times, essence scan merge chats once more behind the ore grinding 1 direct flotation roughly select, obtain containing P
2O
530.77%, the phosphorus concentrate of the rate of recovery 88.28%.
Comparative Examples 1: with the identical rock phosphate in powder raw ore of embodiment 1, after behind disposable mog to 85%, sizing mixing with sodium carbonate, light water glass (sodium carbonate amount is 3 times of embodiment 1, and waterglass is 5 times of soluble glass of high modulus); Add the common oleic acid of collecting agent (consumption is 2 times of ZJ oleic acid compsn); Stirred 2 minutes, warp is roughly selected for 1 time, and 3 times selected; Scan for 2 times, obtain to contain P
2O
524.14%, the phosphorus concentrate of the rate of recovery 74.88%.
Comparative Examples 2: with the identical rock phosphate in powder raw ore of embodiment 2, after behind disposable mog to 90%, sizing mixing with sodium carbonate, sulfomethylated derivative of calcium lignosulfonate (L-339) (sodium carbonate amount is 3 times of embodiment 1, L-339 consumption 600g/t); Add collecting agent oxidized paraffin wax soap (consumption is 3 times of ZJ oleic acid compsn); Stirred 2 minutes, warp is roughly selected for 1 time, and 3 times selected; Scan for 2 times, obtain to contain P
2O
526.08%, the phosphorus concentrate of the rate of recovery 76.18%.
Table 1 embodiment 1,2 regime of agent and result of the tests
The regime of agent and the result of the test of table 2 Comparative Examples 1,2
Table 3 embodiment and Comparative Examples reagent cost and ore grinding direct cost budgetary estimate contrast
Can know from table 1, table 2, table 3, adopt patent technology of the present invention can reduce by 7～8 yuan/ton of reagent costs than other technology, reduce by 10～15 yuan/ton of ore grinding direct costs, the phosphorus concentrate grade improves 3～5%, and recovery rate in ore-dressing improves 10～15%.
Claims (2)
1. a low-grade refractory selects the direct flotation method of phosphorus ore; Be to add one or more the medicament in sodium carbonate, soluble glass of high modulus, the ZJ oleic acid compsn at normal temperatures with in the single direct floatation process step; Described ZJ oleic acid compsn is the mixture that comprises soybean oleic acid, C12～C18 high-carbon fatty alcohol and AE nonionic surface active agent, specifically comprises following processing steps in sequence and condition:
A. broken ore grinding is milled to raw ore-the throwing tail fineness of 0.074mm 55～60% by 1: 1 ore milling concentration;
B. direct flotation:
B1. roughly select; Add inhibitor sodium carbonate 1000～2000g, soluble glass of high modulus 200～500g by raw ore per ton, directly added collecting agent ZJ oleic acid compsn 80 or 90g after sizing mixing 10 minutes, stirred 2～10 minutes; Roughly select, select and roughly select concentrate, roughly select chats and rougher tailings;
B21. selected, add soluble glass of high modulus 30～60g to roughly selecting concentrate by raw ore per ton, carry out 3～4 times selected, select selected chats and product phosphorus concentrate;
B22. scan, add ZJ oleic acid compsn 20～40g by raw ore per ton, carry out 2～3 times and scan, select and scan chats and mine tailing to rougher tailings;
C. regrinding and reconcentration, with selected chats, scan chats and merge ore grinding and to-0.074mm 85-90%, add soluble glass of high modulus 20g, ZJ oleic acid compsn 10～20g by raw ore per ton, true tailings and final phosphorus concentrate are selected in choosing again after further dissociating.
2. a kind of low-grade refractory according to claim 1 selects the direct flotation method of phosphorus ore, it is characterized in that described ZJ oleic acid compsn contains 50～60% soybean oleic acid, 30～40%C12～C18 high-carbon fatty alcohol, 1～10%AE nonionic surface active agent by composition weight meter.
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| CN102284369B (en) * | 2011-06-09 | 2014-01-22 | 北京矿冶研究总院 | Method for improving flotation recovery rate |
| CN102745658B (en) * | 2012-07-09 | 2014-05-07 | 瓮福（集团）有限责任公司 | Method for utilizing carbonate type middle-low-grade phosphorite to manufacture phosphate concentrate |
| CN103962214B (en) * | 2014-06-03 | 2015-08-19 | 中冶沈勘秦皇岛工程技术有限公司 | A kind of beneficiation combined method method and system of synthetical recovery association iron Phosphate minerals |
| CN104259012A (en) * | 2014-08-05 | 2015-01-07 | 云南红富化肥有限公司 | Composite inhibitor and direct flotation method for low-grade refractory phosphate |
| CN106000659B (en) * | 2016-05-23 | 2019-03-08 | 武汉工程大学 | A kind of magnesia low-grade phosphate ore floatation process of manganese |
| CN105935630B (en) * | 2016-06-08 | 2018-11-02 | 核工业北京化工冶金研究院 | The method of flotation carbonate mineral from mud stone type uranium ore |
| CN107670845A (en) * | 2017-10-11 | 2018-02-09 | 江西理工大学 | A kind of preparation method and applications of phosphorus ore direct flotation collecting agent |
| CN109954588B (en) * | 2017-12-22 | 2022-03-18 | 中蓝连海设计研究院有限公司 | Sesquioxide inhibitor and preparation method and application thereof |
| CN110064522A (en) * | 2019-05-30 | 2019-07-30 | 贵州大学 | A kind of low-grade phosphate ore automatic control flotation unit |
| CN110449268B (en) * | 2019-08-19 | 2021-07-23 | 云南磷化集团有限公司 | Siliceous collophanite direct flotation collecting agent and preparation method thereof |
| CN111036412B (en) * | 2019-11-27 | 2021-03-16 | 东北大学 | Application of inhibitor HPMA in positive flotation and magnesium removal of phosphate ore |
| CN113908994B (en) * | 2021-09-27 | 2023-11-21 | 南华大学 | Flotation method of low-grade phosphorite |
| CN114453139B (en) * | 2022-02-28 | 2023-08-04 | 矿冶科技集团有限公司 | Beneficiation method for recovering extremely low-grade phosphorus mineral from gangue mineral iron tailings and application thereof |
| CN115650276A (en) * | 2022-10-25 | 2023-01-31 | 湖北三峡实验室 | Comprehensive recovery method of phosphogypsum resources |
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