CN104858068A - Method for processing phosphate rock tailing by adopting single direct flotation process - Google Patents
Method for processing phosphate rock tailing by adopting single direct flotation process Download PDFInfo
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- CN104858068A CN104858068A CN201510314468.2A CN201510314468A CN104858068A CN 104858068 A CN104858068 A CN 104858068A CN 201510314468 A CN201510314468 A CN 201510314468A CN 104858068 A CN104858068 A CN 104858068A
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- roughing
- single direct
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- phosphate rock
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- 238000000034 method Methods 0.000 title claims abstract description 88
- 239000002367 phosphate rock Substances 0.000 title claims abstract description 32
- 238000005188 flotation Methods 0.000 title claims abstract description 19
- 238000012545 processing Methods 0.000 title abstract description 5
- 239000003112 inhibitor Substances 0.000 claims abstract description 19
- 239000012141 concentrate Substances 0.000 claims abstract description 17
- 125000000129 anionic group Chemical group 0.000 claims abstract description 10
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000003002 pH adjusting agent Substances 0.000 claims description 18
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 9
- 239000000194 fatty acid Substances 0.000 claims description 9
- 229930195729 fatty acid Natural products 0.000 claims description 9
- 150000004665 fatty acids Chemical class 0.000 claims description 9
- 235000019353 potassium silicate Nutrition 0.000 claims description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 9
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical class [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000006260 foam Substances 0.000 abstract description 3
- 238000003672 processing method Methods 0.000 abstract 4
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 230000002000 scavenging effect Effects 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 8
- 239000011574 phosphorus Substances 0.000 description 8
- 229910052698 phosphorus Inorganic materials 0.000 description 8
- 239000000292 calcium oxide Substances 0.000 description 4
- 238000010494 dissociation reaction Methods 0.000 description 4
- 230000005593 dissociations Effects 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- ZMCVOPZMEHFFPQ-UHFFFAOYSA-H calcium silicon(4+) diphosphate Chemical compound [Si+4].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O ZMCVOPZMEHFFPQ-UHFFFAOYSA-H 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for processing phosphate rock tailing by adopting a single direct flotation process. The processing method comprises the following steps of directly feeding phosphate rock tailing into a roughing flotation machine, roughing by once, and properly adding a pH regulator, an inhibitor and an anionic collector during roughing; classifying a foam product during roughing according to the 325-mesh size fraction; feeding a +325-mesh product in grinding operation and grinding to the grinding fineness demanded by flotation; together combining a ground product and a -325-mesh product and then performing secondary roughing; carefully selecting the foam product during secondary roughing by 3-4 times, and scavenging the product in a slot by 1-2 times to prepare a concentrate product. The phosphate concentrate prepared by the processing method is relatively high in grade and recovery rate, and the processing method is simple in process and easy to realize industrial production. The pollution of phosphate rock tailing to environment can be greatly remitted by the method, and the processing method is very important to realize high-efficiency utilization and cyclic utilization of phosphate rock resources in our country.
Description
Technical field
The invention belongs to technical field of mineral processing, particularly the method for single direct floatation process process phosphorite tailings.
Background technology
China's phosphate rock resource is very abundant, and resource base reserves occupy the second in the world, but more than 94% is mid low grade phosphate rock stone, and this kind of ore must deviate from carbonate gangue and silicate gangue simultaneously, could meet the requirement of downstream operation.At present for low-grade calcium-silicon phosphate rock, mainly contain direct reverse floatation process, direct-reverse flotation technique, trans-direct floatation process, these three kinds of floatation process of bi-anti-symmetric matrix technique, at present, China is having a large amount of mine tailing generations every year, wherein w (P after ore dressing sorting
2o
5)=4% ~ 10%, w (MgO)=2% ~ 18%, this part mine tailing mainly leaves Tailings Dam or dry heap process in.If this part mine tailing can not get process for a long time, expense and the desired space of process can be increasing, and this not only causes serious pollution to environment, also cause waste extremely to resource.Therefore, rational exploitation and utilization phosphorite tailings can not only produce certain economic benefit, and has great social effect to the strategy of sustainable development.
Summary of the invention
Technical problem to be solved by this invention is for phosphorite tailings P in prior art
2o
5the difficult problem that secondary recovery utilizes, provide a kind of method design rationally, the method for processing ease, effective employing single direct floatation process process phosphorite tailings.
Technical problem to be solved by this invention is realized by following technical scheme.The present invention is a kind of method adopting single direct floatation process process phosphorite tailings, and be characterized in, its step is as follows:
(1) directly fed by phosphorite tailings and roughly select flotation device, carry out one roughing, add when roughly selecting with appropriate pH adjusting agent, inhibitor, anionic collector, pH adjusting agent selects NaCO
3, NaOH or lime, inhibitor selects waterglass and sodium lignin sulfonate class medicament, collecting agent selected fatty acid anionoid collecting agent;
(2) froth pulp roughly selecting operation carries out graded operation by grade 325 order; + 325 object products are given to grinding operation, are milled to the mog of flotation operation requirement;
(3) product through grinding operation milled is combined with-325 object products, feeds secondary and roughly selects operation;
(4) froth pulp roughly selected of secondary is selected through 3 ~ 4 times, and in groove, product is scanned through 1 ~ 2 time, obtains concentrate product.
A kind of method adopting single direct floatation process process collophane mine tailing of the present invention, preferred technical scheme is further: in the phosphorite tailings described in step (1), main component is by weight percentage containing P
2o
54.0 ~ 12.0%, MgO 2.0 ~ 18.0%, SiO
28.0 ~ 30.0%, and other impurity on a small quantity.
A kind of method adopting single direct floatation process process collophane mine tailing of the present invention, preferred technical scheme is further: in step (2) ,+325 object products are given to grinding operation, are milled to-325 orders and account for 85 ~ 95%.
A kind of method adopting single direct floatation process process collophane mine tailing of the present invention, preferred technical scheme is further: the chats that step (4) scans operation and selected operation is back to an operation step by step.
The inventive method adopts single direct floatation process.Inventor, by doing chemical phase analysis to phosphorite tailings, draws P in mine tailing
2o
5mainly be distributed in the intergrowth of particulate collophane and coarse grain, this reason be mainly selected in due to wide rank causes, the collophane of part particulate monomer dissociation enters in mine tailing along with foam mechanical is mingled with in reverse flotation process, and part non-monomer dissociation collophane intergrowth due to inhibition poor, also enter in mine tailing, the inventive method reclaim mainly for this two-part P of mine tailing
2o
5first one roughing is adopted to throw tail in advance, jettisoning part is the carbonate of monomer dissociation and silicate gangue, reduce the ore deposit amount entering Regrinding, through thickness grading operation, coarse fraction, through Regrinding, is milled to mineral and realizes monomer dissociation, feed secondary and roughly select operation mixing with fine particle stage material, realize narrow rank and be selected in
Compared with prior art, it is simple that the inventive method has technological process, and method design is reasonable, processing ease, the advantages such as concentrate product quality is better.Its phosphorus concentrate grade P obtained
2o
5can reach 28.0 ~ 30.0%, the phosphorus concentrate rate of recovery of acquisition is by weight percentage about 55.0 ~ 75.0%.The inventive method not only greatly alleviates phosphorite tailings pollution on the environment, and has and important meaning in phosphate rock resource realizes efficiency utilization and recycles for China.
Accompanying drawing explanation
Fig. 1 is a kind of process chart of the inventive method.
Detailed description of the invention
Below further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
Embodiment 1, with reference to Fig. 1, a kind of method adopting single direct floatation process process phosphorite tailings, its step is as follows:
(1) directly fed by phosphorite tailings and roughly select flotation device, carry out one roughing, add when roughly selecting with appropriate pH adjusting agent, inhibitor, anionic collector, pH adjusting agent selects NaCO
3, NaOH or lime, inhibitor selects waterglass and sodium lignin sulfonate class medicament, collecting agent selected fatty acid anionoid collecting agent;
(2) froth pulp roughly selecting operation carries out graded operation by grade 325 order; + 325 object products are given to grinding operation, are milled to the mog of flotation operation requirement;
(3) product through grinding operation milled is combined with-325 object products, feeds secondary and roughly selects operation;
(4) froth pulp roughly selected of secondary is selected through 3 ~ 4 times, and in groove, product is scanned through 1 ~ 2 time, obtains concentrate product.
Embodiment 2, a kind of described in embodiment 1 adopts in the step (1) of the method for single direct floatation process process collophane mine tailing, and in described phosphorite tailings, main component is by weight percentage containing P
2o
54.0 ~ 12.0%, MgO 2.0 ~ 18.0%, SiO
28.0 ~ 30.0%, and other impurity on a small quantity.
Embodiment 3, a kind of described in embodiment 1 or 2 adopts in the step (2) of the method for single direct floatation process process collophane mine tailing, and+325 object products are given to grinding operation, are milled to-325 orders and account for 85 ~ 95%.
Embodiment 4, a kind of described in embodiment 1 or 2 adopts in the step (2) of the method for single direct floatation process process collophane mine tailing, and+325 object products are given to grinding operation, are milled to-325 orders and account for 90%.
Embodiment 5, a kind of described in any one of embodiment 1-4 adopts in the step (4) of the method for single direct floatation process process collophane mine tailing, and the chats that step (4) scans operation and selected operation is back to an operation step by step.
The phosphorite tailings selected in following embodiments of the invention is somewhere reverse flotation mine tailing, and valuable mineral is collophane, and main gangue mineral is dolomite, quartz.
Embodiment 6, adopts the methods experiment one of single direct floatation process process collophane mine tailing:
In the phosphorite tailings selected, main component is by weight percentage containing P
2o
58.5%, MgO15.5%, SiO
29.5%, and other impurity on a small quantity;
(1) directly fed by phosphorite tailings and roughly select flotation device, carry out one roughing, add pH adjusting agent, inhibitor, anionic collector when roughly selecting, pH adjusting agent selects NaCO
3and NaOH, inhibitor selects waterglass and S-711, collecting agent selected fatty acid anionoid collecting agent;
(2) froth pulp roughly selecting operation carries out graded operation by grade 325 order, and+325 object products are given to grinding operation, is milled to the mog (-325 order 90%) of flotation operation requirement;
(3) product through grinding operation milled is combined with-325 object products, and feed secondary and roughly select operation, secondary is roughly selected operation and added pH adjusting agent, inhibitor, anionic collector, and pH adjusting agent selects NaCO
3and NaOH, inhibitor selects waterglass and S-711, collecting agent selected fatty acid anionoid collecting agent;
(4) froth pulp roughly selected of secondary is selected through 3 ~ 4 times, and in groove, product is scanned through 1 ~ 2 time, and it is qualified finally to obtain
Concentrate product, the chats scanning operation and selected operation is back to an operation step by step.
The phosphorus concentrate grade P obtained in said method
2o
5be 29.5%, the phosphorus concentrate rate of recovery obtained in said method is 72.5% by weight percentage.
Embodiment 7, adopts the methods experiment two of single direct floatation process process collophane mine tailing:
In the phosphorite tailings selected, main component is by weight percentage containing P
2o
56.5%, MgO13.8%, SiO
214.4%, and other impurity on a small quantity;
(1) phosphorite tailings is directly fed roughly select flotation device, carry out one roughing, add pH adjusting agent, inhibitor, anionic collector when roughly selecting, pH adjusting agent selects CaO and NaOH, and inhibitor selects waterglass and S-711, collecting agent selected fatty acid anionoid collecting agent;
(2) froth pulp roughly selecting operation carries out graded operation by grade 325 order, and+325 object products are given to grinding operation, is milled to the mog (-325 order 88%) of flotation operation requirement;
(3) product through grinding operation milled is combined with-325 object products, feed secondary and roughly select operation, secondary is roughly selected operation and is added pH adjusting agent, inhibitor, anionic collector, pH adjusting agent selects CaO and NaOH, and inhibitor selects waterglass and S-711, collecting agent selected fatty acid anionoid collecting agent;
(4) froth pulp roughly selected of secondary is selected through 3 ~ 4 times, and in groove, product is scanned through 1 ~ 2 time, and it is qualified finally to obtain
Concentrate product, the chats scanning operation and selected operation is back to an operation step by step.
The phosphorus concentrate grade P obtained in said method
2o
5be 28.3%, the phosphorus concentrate rate of recovery obtained in said method is 68.5% by weight percentage.
Embodiment 8, adopts the methods experiment three of single direct floatation process process collophane mine tailing:
In the phosphorite tailings selected, main component is by weight percentage containing P
2o
57.6%, MgO16.5%, SiO
211.6%, and other impurity on a small quantity;
(1) directly fed by phosphorite tailings and roughly select flotation device, carry out one roughing, add pH adjusting agent, inhibitor, anionic collector when roughly selecting, pH adjusting agent selects NaCO
3and CaO, inhibitor selects waterglass and SM101, collecting agent selected fatty acid anionoid collecting agent;
(2) froth pulp roughly selecting operation carries out graded operation by grade 325 order, and+325 object products are given to grinding operation, is milled to the mog (-325 order 92%) of flotation operation requirement;
(3) product through grinding operation milled is combined with-325 object products, and feed secondary and roughly select operation, secondary is roughly selected operation and added pH adjusting agent, inhibitor, anionic collector, and pH adjusting agent selects NaCO
3and CaO, inhibitor selects waterglass and SM101, collecting agent selected fatty acid anionoid collecting agent;
(4) froth pulp roughly selected of secondary is selected through 3 ~ 4 times, and in groove, product is scanned through 1 ~ 2 time, and it is qualified finally to obtain
Concentrate product, the chats scanning operation and selected operation is back to an operation step by step.
The phosphorus concentrate grade P obtained in said method
2o
5be 28.8%, the phosphorus concentrate rate of recovery obtained in said method is 71.5% by weight percentage.
Claims (4)
1. adopt a method for single direct floatation process process phosphorite tailings, it is characterized in that, its step is as follows:
(1) directly fed by phosphorite tailings and roughly select flotation device, carry out one roughing, add when roughly selecting with appropriate pH adjusting agent, inhibitor, anionic collector, pH adjusting agent selects NaCO
3, NaOH or lime, inhibitor selects waterglass and sodium lignin sulfonate class medicament, collecting agent selected fatty acid anionoid collecting agent;
(2) froth pulp roughly selecting operation carries out graded operation by grade 325 order; + 325 object products are given to grinding operation, are milled to the mog of flotation operation requirement;
(3) product through grinding operation milled is combined with-325 object products, feeds secondary and roughly selects operation;
(4) froth pulp roughly selected of secondary is selected through 3 ~ 4 times, and in groove, product is scanned through 1 ~ 2 time, obtains concentrate product.
2. a kind of method adopting single direct floatation process process collophane mine tailing according to claim 1, is characterized in that: in the phosphorite tailings described in step (1), main component is by weight percentage containing P
2o
54.0 ~ 12.0%, MgO 2.0 ~ 18.0%, SiO
28.0 ~ 30.0%, and other impurity on a small quantity.
3. a kind of method adopting single direct floatation process process collophane mine tailing according to claim 1, it is characterized in that: in step (2) ,+325 object products are given to grinding operation, are milled to-325 orders and account for 85 ~ 95%.
4. a kind of method adopting single direct floatation process process collophane mine tailing according to claim 1, is characterized in that: the chats that step (4) scans operation and selected operation is back to an operation step by step.
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|---|---|---|---|
| CN201510314468.2A CN104858068B (en) | 2015-06-09 | 2015-06-09 | A kind of method that phosphorite tailings are handled using single direct floatation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750089A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Magnesian collophanite separation method |
| CN110076006A (en) * | 2019-04-01 | 2019-08-02 | 湖北省黄麦岭磷化工有限责任公司 | A method of extracting pyrite from phosphorus tailing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111135947A (en) * | 2020-01-03 | 2020-05-12 | 云南磷化集团有限公司 | Collophanite flotation tailing treatment process |
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|---|---|---|---|---|
| US4372843A (en) * | 1981-06-02 | 1983-02-08 | International Minerals & Chemical Corp. | Method of beneficiating phosphate ores containing dolomite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750089A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Magnesian collophanite separation method |
| CN110076006A (en) * | 2019-04-01 | 2019-08-02 | 湖北省黄麦岭磷化工有限责任公司 | A method of extracting pyrite from phosphorus tailing |
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| CN104858068B (en) | 2017-11-14 |
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