CN101844106B - Combined and staged separation method for weathered phosphoric ore - Google Patents
Combined and staged separation method for weathered phosphoric ore Download PDFInfo
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- CN101844106B CN101844106B CN 201010161737 CN201010161737A CN101844106B CN 101844106 B CN101844106 B CN 101844106B CN 201010161737 CN201010161737 CN 201010161737 CN 201010161737 A CN201010161737 A CN 201010161737A CN 101844106 B CN101844106 B CN 101844106B
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Abstract
The invention relates to a combined and staged separation method for weathered phosphoric ore, in particular to a method for stage floatation of the phosphoric ore according to volume density variation. The method comprises the following technical steps of: (1) crushing the weathered phosphoric ore to ensure that more than 80 percent of grains have the grain size of less than 0.074 mm, blending the pulp until the mass concentration is 27 to 40 percent, and adding a stage synergist; (2) introducing an agitation type floatation machine for the stage floatation; and (3) taking grains adhered to bubbles and floated as light components, putting the grains serving as floatation feeding into a light component floatation system, and taking grains discharged with a underflow as heavy components and putting the grains serving as floatation feeding into a heavy component floatation system to respectively obtain light component phosphate concentrate and heavy component phosphate concentrate. The separation method has the advantages of simple process, capability of separating the light components, high stage efficiency, easy operation and easy realization of industrialized production.
Description
Technical field
The present invention relates to a kind of phosphorus ore weathered ore beneficiation method, particularly to the collophane weathered ore by volume density variation carry out the method for stage flotation.
Background technology
The phosphorus ore thing is an important chemical material, wherein is used to produce phosphate fertilizer more than 80%.Along with the continuous growth of phosphate fertilizer demand, the minimizing gradually of rich ore, must be used by the low-grade phosphate rock resource of centering, wherein, in low-grade weathered ore also become important phosphor resource and be exploited.But because weathered ore makes dolomite leaching loss in the raw ore in long-term slacking; In the ore structure, stay a large amount of pore structures; The raw ore bulk density reduces, specific area increases thereby make; It is extremely difficult that these characteristics can cause weathered ore ore dressing and product to dewater, and the extraction operation of phosphoric acid by wet process is difficult to.Therefore, the component that weathered ore mesopore rate is high, bulk density is little being told individual processing can make a weathered ore ore dressing difficult problem effectively solved.
Classifying equipoment commonly used both at home and abroad at present has: spiral classifier, hydrocyclone, dusting cover etc., every kind of classifying equipoment is selecting factory that application example is all arranged.But the operation principle of these stage divisions is had nothing in common with each other; Wherein screening is to carry out classification according to raw meal particle size; Spiral classifier carries out classification according to particle sinking speed difference in ore pulp; Hydrocyclone carries out classification according to the suffered centrifugal force difference of particle in the ore pulp, all is not that strictness is carried out classification according to the difference of bulk density, can not satisfy floatation process to separating the requirement of light component.
Summary of the invention
To the weak point of above-mentioned existing weathered ore technique of preparing, the present invention provides a kind of stage flotation method of in the collophane weathered ore, using of suiting, and its technology is simple, separable light component, and high, the operation easily of classification efficiency is prone to realize suitability for industrialized production.
The object of the invention is achieved through following technical scheme:
The present invention adopts following technical process:
1. weathered phosphoric ore is crushed to 80% above particle diameter less than 0.074mm, makes the abundant monomer dissociation of phosphorus ore thing, size mixing then to mass concentration be 27%～40%, add the classification synergist that ester class and alcohols and pure aldehydes derivative mix;
2. introduce agitation type flotation machine and carry out the flotation classification, the classification synergist is fully mixed with ore pulp;
3. bump at flotation cell endoparticle and bubble, the particle aerophily with pore structure is better than other particle, adheres to bubble by the light component of emersion conduct, gets into light component floatation system as flotation to the ore deposit; Be not heavy component, from underflow, discharge, get into the heavy component floatation system to the ore deposit as flotation by the particle of emersion; Adopt conventional floatation to handle afterwards again, just obtain light component phosphorus concentrate and heavy component phosphorus concentrate respectively.
Comprise the ester class component of 15wt%～40wt% and the alcohols and the aldehydes derivative component thereof of surplus in the classification synergist of the present invention, wherein ester class component is:
The ester that butyric acid that one or more general formulas are following and low carbon acid generate
In the formula, R1 is the alkyl of 3 carbon atoms, and R2 represents the alkyl of 4～8 carbon atoms;
Alcohols and aldehydes derivative component thereof are made up of isooctanol and aldehydes derivative thereof, and general formula is respectively:
(i) isooctanol
R
3-OH，
In the formula, R3 represents the alkyl of 8 carbon atoms;
The (ii) aldehydes derivative of isooctanol
In the formula, R4 represents the alkyl of 7 carbon atoms;
Wherein to account for the percentage of this component gross mass be 20%～70% to isooctanol.
The addition of classification synergist is 0.003%～0.007% of a weathered phosphoric ore quality; The rotating speed of agitation type flotation machine is 1500r/min～1900r/min, and the time of stage flotation is 12min～24min.
Compared with prior art, the present invention has following beneficial effect:
1. the flotation stage division is to carry out classification according to volume density difference, can realize separating of the light component of weathered ore and heavy component.
2. this stage division is compared have the classification efficiency height (can reach more than 90%), maneuverable advantage with other stage divisions.
3. the heavy component flotation concentrate can be used as the wet method composting and uses the phosphorus concentrate, owing to there is not the interference heavy component concentrate of light component to have few, the easy advantage of post processing of bubble in easy dehydration, the system process phosphoric acid.
4. light component flotation concentrate is a kind of high-quality phosphorus concentrate of producing general calcium, and the pore structure in the concentrate can improve the active phosphorus content in the fertilizer.
5. easy realization of industrialization, only needing to increase an a small amount of investment just can be accomplished on the original floatation process of flotation mill.
Description of drawings
Fig. 1 is a process chart of the present invention.
The present invention mainly comprises: phosphorus ore weathered ore ore grinding step 1, adjustment pulp density step 2, flotation classification 3, the flotation step 4 of heavy ends and the flotation step 5 of light component.
The specific embodiment
(1) selecting the conventional mechanical agitation type flotation machine is grading plant;
(2) with the weathered phosphoric ore raw ore through broken, ore grinding, mog is generally-0.074mm >=80%, makes the abundant monomer dissociation of phosphorus ore thing, the control pulp density is 27%～40%;
(3) ore pulp of step (2) is introduced in the mineralising groove, added the classification synergist that accounts for weathered phosphoric ore quality 0.003%～0.007%, make it fully to mix with ore pulp;
(4) gains of step (3) are introduced in (1) described flotation device, adopted conventional floating operation mode to carry out the flotation graded operation, the rotating speed of flotation device is 1500r/min～1900r/min, and the time of stage flotation is 12min～24min;
(5) ore pulp feeds in the classification main frame groove type floatation cell; Bump at flotation cell endoparticle and bubble; Particle aerophily with pore structure is better than other particle, and then is easy to adhere to and is brought to froth bed on the bubble, finally by emersion; The particle of emersion is light component, bulk density than the fall of raw ore general＞0.5g/cm
3, get into light component floatation system to the ore deposit as flotation;
(6) be not heavy component by the particle of emersion, bulk density than the increase rate of raw ore general>=0.1g/cm
3, discharge by the flotation device underflow, get into the heavy component floatation system as flotation to the ore deposit;
(7) gains of step (5) and step (6) are introduced respectively separately in the floatation system, adopted conventional floatation to handle and to obtain the phosphorus concentrate, promptly light component phosphorus concentrate and heavy component phosphorus concentrate.
The following stated embodiment has at length explained the present invention.In these embodiment, removing has specified otherwise, and all percentage compositions are mass percent.
Embodiment 1
Mining area, Anning sample ore, raw ore P
2O
5Grade 23.51%, MgO content 0.32%, selected raw ore bulk density is 2.49g/cm
3Flow process adopts combined and staged ore-dressing technique: mog accounts for 86% for-0.074mm, ore milling concentration 30wt%, and the sorting temperature is a normal temperature.Classification synergist consumption 48g/t.Classification is controlled at about 1900r/min with the flotation device rotating speed.Grading time 24min.Light component productive rate 29.21%, bulk density 1.86g/cm
3, get into light component floatation system to the ore deposit as flotation; After the direct flotation flow processing, light component phosphorus concentrate P
2O
5Grade 28.08%, MgO content 0.97%, comprehensive yied 20.91%, P
2O
5Comprehensive recovery 24.97%.Heavy component productive rate 70.79%, bulk density 2.75g/cm
3, get into the heavy component floatation system to the ore deposit as flotation; After positive reverse flotation flowsheet is handled, heavy component phosphorus concentrate P
2O
5Grade 31.83%, MgO content 0.66%, comprehensive yied 44.74%, P
2O
5Comprehensive recovery 60.57%.
Embodiment 2
Sample ore is with embodiment 1, i.e. raw ore P
2O
5Grade 23.51%, MgO content 0.32%, selected raw ore bulk density is 2.49g/cm
3Flow process adopts combined and staged ore-dressing technique: mog accounts for 86% for-0.074mm, ore milling concentration 40wt%, and the sorting temperature is a normal temperature.Classification synergist consumption 30g/t.Classification is controlled at about 1750r/min with the flotation device rotating speed.Grading time 12min.Light component productive rate 29.30%, bulk density 1.86g/cm
3, get into light component floatation system to the ore deposit as flotation; After the direct flotation flow processing, light component phosphorus concentrate P
2O
5Grade 28.15%, MgO content 0.93%, comprehensive yied 20.95%, P
2O
5Comprehensive recovery 25.08%.Heavy component productive rate 70.70%, bulk density 2.75g/cm
3, get into the heavy component floatation system to the ore deposit as flotation; After positive reverse flotation flowsheet is handled, heavy component phosphorus concentrate P
2O
5Grade 31.90%, MgO content 0.61%, comprehensive yied 44.64%, P
2O
5Comprehensive recovery 60.57%.
Embodiment 3
Mining area, Anning sample ore, raw ore P
2O
5Grade 23.02%, MgO content 0.87%, selected raw ore bulk density is 2.60g/cm
3Flow process adopts combined and staged ore-dressing technique: mog accounts for 84% for-0.074mm, ore milling concentration 27wt%, and the sorting temperature is a normal temperature.Classification synergist consumption 50g/t.Classification is controlled at about 1750r/min with the flotation device rotating speed.Grading time 18min.Light component productive rate 20.00%, bulk density 2.08g/cm
3, get into light component floatation system to the ore deposit as flotation; After the direct flotation flow processing, light component phosphorus concentrate P
2O
5Grade 29.17%, MgO content 1.13%, comprehensive yied 13.36%, P
2O
5Comprehensive recovery 16.93%.Heavy component productive rate 80.00%, bulk density 2.73g/cm
3, get into the heavy component floatation system to the ore deposit as flotation; After positive reverse flotation flowsheet is handled, heavy component phosphorus concentrate P
2O
5Grade 30.79%, MgO content 0.26%, comprehensive yied 50.30%, P
2O
5Comprehensive recovery 67.28%.
Embodiment 4
Sample ore is with embodiment 3, i.e. raw ore P
2O
5Grade 23.02%, MgO content 0.87%, selected raw ore bulk density is 2.60g/cm
3Flow process adopts combined and staged ore-dressing technique: mog accounts for 84% for-0.074mm, ore milling concentration 35wt%, and the sorting temperature is a normal temperature.Classification synergist consumption 43g/t.Classification is controlled at about 1675r/min with the flotation device rotating speed.Grading time 12min.Light component productive rate 19.77%, bulk density 2.03g/cm
3, get into light component floatation system to the ore deposit as flotation; After the direct flotation flow processing, light component phosphorus concentrate P
2O
5Grade 29.30%, MgO content 1.06%, comprehensive yied 13.26%, P
2O
5Comprehensive recovery 16.88%.Heavy component productive rate 80.23%, bulk density 2.74g/cm
3, get into the heavy component floatation system to the ore deposit as flotation; After positive reverse flotation flowsheet is handled, heavy component phosphorus concentrate P
2O
5Grade 30.70%, MgO content 0.31%, comprehensive yied 50.53%, P
2O
5Comprehensive recovery 67.39%.
Embodiment 5
Mining area, Haikou, Yunnan sample ore, raw ore P
2O
5Grade 22.50%, MgO content 2.28%, selected raw ore bulk density is 2.67g/cm
3Flow process adopts combined and staged ore-dressing technique: mog accounts for 82% for-0.074mm, ore milling concentration 27wt%, and the sorting temperature is a normal temperature.Classification synergist consumption 60g/t.Classification is controlled at about 1500r/min with the flotation device rotating speed.Grading time 24min.Light component productive rate 13.15%, bulk density 1.98g/cm
3, get into light component floatation system to the ore deposit as flotation; After positive reverse flotation is handled, light component phosphorus concentrate P
2O
5Grade 28.40%, MgO content 1.20%, comprehensive yied 9.09%, P
2O
5Comprehensive recovery 11.47%%.Heavy component productive rate 86.85%, bulk density 2.78g/cm
3, get into the heavy component floatation system to the ore deposit as flotation; After positive reverse flotation flowsheet is handled, heavy component phosphorus concentrate P
2O
5Grade 31.50%, MgO content 0.37%, comprehensive yied 52.28%, P
2O
5Comprehensive recovery 73.19%.
Embodiment 6
Sample ore is with embodiment 5, i.e. raw ore P
2O
5Grade 22.50%, MgO content 2.28%, selected raw ore bulk density is 2.67g/cm
3Flow process adopts combined and staged ore-dressing technique: mog accounts for 82% for-0.074mm, ore milling concentration 40wt%, and the sorting temperature is a normal temperature.Classification synergist consumption 70g/t.Classification is controlled at about 1750r/min with the flotation device rotating speed.Grading time 12min.Light component productive rate 13.10%, bulk density 2.01g/cm
3, get into light component floatation system to the ore deposit as flotation; After positive reverse flotation is handled, light component phosphorus concentrate P
2O
5Grade 28.29%, MgO content 1.24%, comprehensive yied 8.97%, P
2O
5Comprehensive recovery 11.28%.Heavy component productive rate 86.90%, bulk density 2.77g/cm
3, get into the heavy component floatation system to the ore deposit as flotation; After positive reverse flotation flowsheet is handled, heavy component phosphorus concentrate P
2O
5Grade 31.39%, MgO content 0.45%, comprehensive yied 53.15%, P
2O
5Comprehensive recovery 74.15%.
Claims (2)
1. combined and staged separation method for weathered phosphoric ore is characterized in that processing step is:
1. weathered phosphoric ore is crushed to 80% above particle diameter less than 0.074mm, size mixing to mass concentration be 27%～40%, add the classification synergist that ester class and alcohols and pure aldehydes derivative mix;
2. introduce agitation type flotation machine and carry out the flotation classification;
3. adhering to bubble is light component by the particle of emersion, gets into light component floatation system as flotation to the ore deposit, and the particle of discharging in the underflow is a heavy component, gets into the heavy component floatation system as flotation to the ore deposit, obtains light component phosphorus concentrate and heavy component phosphorus concentrate respectively;
4. comprise the ester class component of 15wt%～40wt% and the alcohols and the aldehydes derivative component thereof of surplus in the classification synergist, wherein ester class component is:
The ester that butyric acid that one or more general formulas are following and low carbon acid generate
In the formula, R
1Be the alkyl of 3 carbon atoms, R
2Represent the alkyl of 4～8 carbon atoms;
Alcohols and aldehydes derivative component thereof are made up of isooctanol and aldehydes derivative thereof, and general formula is respectively:
(I) isooctanol
R
3―OH，
In the formula, R
3Represent the alkyl of 8 carbon atoms;
The aldehydes derivative of (II) isooctanol
In the formula, R
4Represent the alkyl of 7 carbon atoms;
Wherein to account for the percentage of this component gross mass be 20%～70% to isooctanol.
2. combined and staged separation method for weathered phosphoric ore according to claim 1 is characterized in that: the addition of classification synergist is 0.003%～0.007% of a weathered phosphoric ore quality; The rotating speed of agitation type flotation machine is 1500r/min～1900r/min, and the time of stage flotation is 12min～24min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102773151B (en) * | 2012-07-12 | 2013-12-11 | 云南磷化集团有限公司 | Weathered collophanite graded processing technique |
| CN109453891B (en) * | 2018-10-23 | 2021-06-18 | 宜都兴发化工有限公司 | High sesqui-collophanite spiral chute re-floating combined process |
| CN110339939B (en) * | 2019-07-15 | 2021-04-16 | 云南磷化集团有限公司 | Combined process and system for pre-grading, grinding and grading and respectively floating collophanite |
| CN113758549B (en) * | 2021-09-01 | 2023-06-09 | 辽宁科技大学 | Method for rapidly measuring weight of flotation foam product |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB788151A (en) * | 1953-10-19 | 1957-12-23 | Du Pont | Solid siliceous materials of high surface area, methods of making the same, and compositions containing them |
| CN101020159A (en) * | 2007-03-20 | 2007-08-22 | 武汉工程大学 | Phosphate rock floating process |
| CN101631620A (en) * | 2006-11-29 | 2010-01-20 | 花王有限公司 | Collector for the flotation of carbonates |
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2010
- 2010-05-04 CN CN 201010161737 patent/CN101844106B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB788151A (en) * | 1953-10-19 | 1957-12-23 | Du Pont | Solid siliceous materials of high surface area, methods of making the same, and compositions containing them |
| CN101631620A (en) * | 2006-11-29 | 2010-01-20 | 花王有限公司 | Collector for the flotation of carbonates |
| CN101020159A (en) * | 2007-03-20 | 2007-08-22 | 武汉工程大学 | Phosphate rock floating process |
Non-Patent Citations (1)
| Title |
|---|
| 华映梅等.昆阳磷矿低镁风化矿的合理选矿工艺.《化工矿山技术》.1992,第21卷(第6期),第19-21页. * |
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