CN104841569A - Flotation technology of middle-low-grade silica-calcia bearing phosphate rock - Google Patents
Flotation technology of middle-low-grade silica-calcia bearing phosphate rock Download PDFInfo
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- CN104841569A CN104841569A CN201510325355.2A CN201510325355A CN104841569A CN 104841569 A CN104841569 A CN 104841569A CN 201510325355 A CN201510325355 A CN 201510325355A CN 104841569 A CN104841569 A CN 104841569A
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Abstract
The invention relates to a flotation technology of a middle-low-grade silica-calcia bearing phosphate rock. The technology is implemented by the following steps that: after collophanite is processed by crushing and ore grinding until monomer separation occurs, a reverse flotation and de-magging system is used for carrying out flotation and de-magging work; desliming is carried out on rough concentrate after the flotation and de-magging process; a coarse ore particle product after desliming enters the reverse flotation and de-magging system to carry out flotation and desilicication work; and a fine ore particle product enters the reverse flotation and de-magging system again and the flotation and de-magging work is carried out on the fine ore particle product again by adding inorganic salt for condensation of fine particles and reducing the rotating speed of a flotation machine impeller. In the prior art, after desliming of the middle-low-grade silica-calcia bearing phosphate rock, lots of fine ore particles can be obtained and the grade is low; and the processed fine ore particles can not added to the concentrate or gangue directly. However, with the technology, the problem that the sludge can not be processed after the desliming work of the dual-reverse flotation process of the middle-low-grade silica-calcia bearing phosphate rock can be solved. Meanwhile, the flotation foam can be improved; the sorting feature can be improved; and the reagent dosage is reduced.
Description
Technical field
The present invention relates to a kind of ore-dressing technique of phosphorus ore, particularly relate to a kind of floatation process of middle-low grade silicon calcium collophanite.
Background technology
In world phosphate reserves, more than 70% is appositional pattern collophane, and wherein middle-low grade silicon calcium collophanite is that in this kind of ore, reserves are maximum is also the ore being difficult to most utilize.This kind of ore needs to remove silicate impurity and carbonate impurities ability processing and utilization in enrichment process simultaneously.Current domestic spendable flotation process is: direct reverse flotation flow process and bi-anti-symmetric matrix flow process.Direct reverse flotation processing disadvantages is more outstanding: during flotation, ore pulp Acidity of Aikalinity is contrary, and backwater process is more difficult, and during flotation, temperature influence is larger etc.Flotation principle that bi-anti-symmetric matrix flow process meets " floating few press down many ", normal temperature flotation can carried out compared with under coarseness during flotation, the optimal flotation process of low product silicon calcium collophanite in being, but to be that desiliconization collecting agent affects by sludge larger for the major limitation that bi-anti-symmetric matrix technique exists.When not carrying out desliming operation flotation, sorting is poor, and too much and be clamminess, subsequent technique is difficult to carry out foam.When carrying out desliming operation flotation, sludge deviates from amount comparatively greatly, and grade is lower, and this part sludge can not be incorporated to concentrate, can not as tailings glass.This seriously constrains the application of bi-anti-symmetric matrix technological process in industry.
Summary of the invention
Technical problem to be solved by this invention is the deficiency for existing technological process, according to the feature of collophane and gangue self, provides one more rational middle-low grade silico-calcium matter Collophanite flotation technique.
The technical problem of solution required for the present invention realizes by following technical scheme.The present invention is a kind of middle-low grade silico-calcium matter Collophanite flotation technique, is characterized in, specifically comprises the following steps:
(1) ore grinding after mid-low grade collophanite ore crushing raw ore is dissociated to mineral monomer;
(2) ore grinding product adds water to size mixing and enter tank diameter to applicable concentration, add appropriate adjusting agent phosphoric acid and reverse flotation de-magging collector is sized mixing, material after sizing mixing enters reverse flotation system and carries out the operation of reverse flotation de-magging, and froth pulp is de-magging mine tailing, and in groove, product is de-magging concentrate;
(3) desliming operation is carried out to de-magging concentrate, obtain coarse grain ore in sand form product and particulate slime product;
(4) coarse grain ore in sand form product adds water to size mixing and enter tank diameter to applicable concentration, add appropriate adjusting agent sodium carbonate and Counterfloatating desiliconization collecting agent is sized mixing, material after sizing mixing enters reverse flotation system and carries out Counterfloatating desiliconization operation, and froth pulp is desiliconization mine tailing, and in groove, product is coarse-grain coarse ore concentrate;
(5) tank diameter is entered after particulate slime product being adjusted to applicable concentration, add appropriate adjusting agent phosphoric acid, the inorganic salts of flocculation and reverse flotation de-magging collector to size mixing, material after sizing mixing carries out the operation of reverse flotation de-magging after entering reverse flotation system again, froth pulp is sludge mine tailing, and in groove, product is fine concentrate;
Coarse-grain coarse ore concentrate and fine concentrate merging obtain final concentrate, and desiliconization mine tailing and the merging of sludge mine tailing obtain true tailings.
A kind of middle-low grade silico-calcium matter Collophanite flotation technique of the present invention, preferred technical scheme is further: mainly consisting of of described mid-low grade collophanite ore: P
2o
5grade be the grade of 10 ~ 30%, MgO be 2 ~ 10%, SiO
2grade is 10 ~ 40%, and all the other are impurity.
A kind of middle-low grade silico-calcium matter Collophanite flotation technique of the present invention, preferred technical scheme is further: the mog in step (1) accounts for 45 ~ 85% for-0.074mm grade.
A kind of middle-low grade silico-calcium matter Collophanite flotation technique of the present invention, further preferred technical scheme is: in step (2) and/or step (4), size mixing during flotation to mass concentration be 25 ~ 50%.
A kind of middle-low grade silico-calcium matter Collophanite flotation technique of the present invention, preferred technical scheme is further: the desliming operation described in step (3) adopts one or several combinations in screening desliming, eddy flow desliming or mechanical desliming.
A kind of middle-low grade silico-calcium matter Collophanite flotation technique of the present invention, preferred technical scheme is further: described de-magging collector is selected from oleate soap, oxidized paraffin wax soap, or the combination medicament that oleate soap, oxidized paraffin wax soap and other surfactants form; Described desiliconization collecting agent is selected from fatty amine, ether amine, polyamines or other cationic surfactant; The inorganic salts of described flocculation are selected from AlCl
3, Al
2(SO4)
3or their polymer.In the present invention, the consumption of the inorganic salts of de-magging collector, desiliconization collecting agent, flocculation is conventional amount used.
A kind of middle-low grade silico-calcium matter Collophanite flotation technique of the present invention, preferred technical scheme is further: its wheel speed of flotation device that the reverse flotation de-magging described in step (2) and the Counterfloatating desiliconization described in step (4) use is 1800 ~ 2100 revs/min; Its wheel speed of flotation device that particulate sludge reverse flotation de-magging described in step (5) uses is 1300 ~ 1600 revs/min.
A kind of middle-low grade silico-calcium matter Collophanite flotation technique of the present invention, further preferred technical scheme is: the flow process of step (2) and/or the reverse flotation de-magging operation described in step (5) is only roughly selects operation, or by roughly selecting, selected and scan operation and jointly form.
A kind of middle-low grade silico-calcium matter Collophanite flotation technique of the present invention, further preferred technical scheme is: the flow process of the Counterfloatating desiliconization operation described in step (4) is only roughly selects operation, or roughly select, selected and scan operation and jointly form.
Present invention process is the feature according to collophane and gangue self, provides one more rational technological process.In collophane ore, carbonate gangue hardness is relatively low, in ore grinding, easily enter fine fraction.After reverse flotation de-magging terminates, carry out desliming operation, chemical analysis is carried out to two products after desliming and finds that the grade of coarse grain ore in sand form product MgO reduces further, and the grade of particulate slime product MgO improves larger.Particulate slime product has the inorganic salts of cohesion and reduction flotation machine impeller rotating speed again to carry out flotation magnesium operation by adding to particulate, the concentrate grade obtained is higher can be merged in desiliconization concentrate, the tailings grade that flotation magnesium obtains is lower to be merged in de-magging mine tailing, solves the particulate sludge Utilizing question of mid-low grade collophanite ore.
Compared with prior art, the invention solves the Utilizing question of sludge after desliming operation, according to the feature of collophane self, particulate sludge part MgO grade is higher, again flotation magnesium operation is carried out with reduction flotation device rotating speed by adding the inorganic salts with flocculation, after flotation magnesium, concentrate grade is higher can merge with coarse grain desiliconization concentrate, and the tailings grade of de-magging is lower to be merged in mine tailing.After desliming, coarse grain ore in sand form product is that collecting agent carries out Counterfloatating desiliconization with cation, has the advantages such as sorting is good, frothing is excellent, and dosing is few.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Detailed description of the invention
The present invention is further illustrated by the following example, but not by the restriction of these embodiments.
Embodiment 1, with reference to Fig. 1, a kind of middle-low grade silico-calcium matter Collophanite flotation technique, specifically comprises the following steps:
(1) ore grinding after mid-low grade collophanite ore crushing raw ore is dissociated to mineral monomer;
(2) ore grinding product adds water to size mixing and enter tank diameter to applicable concentration, add appropriate adjusting agent phosphoric acid and reverse flotation de-magging collector is sized mixing, material after sizing mixing enters reverse flotation system and carries out the operation of reverse flotation de-magging, and froth pulp is de-magging mine tailing, and in groove, product is de-magging concentrate;
(3) desliming operation is carried out to de-magging concentrate, obtain coarse grain ore in sand form product and particulate slime product;
(4) coarse grain ore in sand form product adds water to size mixing and enter tank diameter to applicable concentration, add appropriate adjusting agent sodium carbonate and Counterfloatating desiliconization collecting agent is sized mixing, material after sizing mixing enters reverse flotation system and carries out Counterfloatating desiliconization operation, and froth pulp is desiliconization mine tailing, and in groove, product is coarse-grain coarse ore concentrate;
(5) tank diameter is entered after particulate slime product being adjusted to applicable concentration, add appropriate adjusting agent phosphoric acid, the inorganic salts of flocculation and reverse flotation de-magging collector to size mixing, material after sizing mixing carries out the operation of reverse flotation de-magging after entering reverse flotation system again, froth pulp is sludge mine tailing, and in groove, product is fine concentrate;
Coarse-grain coarse ore concentrate and fine concentrate merging obtain final concentrate, and desiliconization mine tailing and the merging of sludge mine tailing obtain true tailings.
Embodiment 2, in a kind of middle-low grade silico-calcium matter Collophanite flotation technique described in embodiment 1: mainly consisting of of described mid-low grade collophanite ore: P
2o
5grade be the grade of 10 ~ 30%, MgO be 2 ~ 10%, SiO
2grade is 10 ~ 40%, and all the other are impurity.
Embodiment 3, in a kind of middle-low grade silico-calcium matter Collophanite flotation technique described in embodiment 1 or 2: the mog in step (1) accounts for 45 ~ 85% for-0.074mm grade.
Embodiment 4, in a kind of middle-low grade silico-calcium matter Collophanite flotation technique described in embodiment 1 or 2: the mog in step (1) accounts for 60 ~ 70% for-0.074mm grade.
Embodiment 5, in a kind of middle-low grade silico-calcium matter Collophanite flotation technique described in embodiment 1 or 2: the mog in step (1) accounts for 65% for-0.074mm grade.
Embodiment 6, in a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-5 described in any one: in step (2) and/or step (4), size mixing during flotation to mass concentration be 25 ~ 50%.
Embodiment 7, in a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-5 described in any one: in step (2) and/or step (4), size mixing during flotation to mass concentration be 30 ~ 45%.
Embodiment 8, in a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-5 described in any one: in step (2) and/or step (4), size mixing during flotation to mass concentration be 35%.
Embodiment 9, a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-8 described in any one: the desliming operation described in step (3) adopts one or several combinations in screening desliming, eddy flow desliming or mechanical desliming.
Embodiment 10, in a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-9 described in any one: described de-magging collector is selected from oleate soap, oxidized paraffin wax soap, or the combination medicament that oleate soap, oxidized paraffin wax soap and other surfactants form; Described desiliconization collecting agent is selected from fatty amine, ether amine, polyamines or other cationic surfactant; The inorganic salts of described flocculation are selected from AlCl
3, Al
2(SO4)
3or their polymer.
Embodiment 11, a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-10 described in any one: its wheel speed of flotation device that the reverse flotation de-magging described in step (2) and the Counterfloatating desiliconization described in step (4) use is 1800 revs/min; Its wheel speed of flotation device that particulate sludge reverse flotation de-magging described in step (5) uses is 1300 revs/min.
Embodiment 12, a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-10 described in any one: its wheel speed of flotation device that the reverse flotation de-magging described in step (2) and the Counterfloatating desiliconization described in step (4) use is 2100 revs/min; Its wheel speed of flotation device that particulate sludge reverse flotation de-magging described in step (5) uses is 1600 revs/min.
Embodiment 13, a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-10 described in any one: its wheel speed of flotation device that the reverse flotation de-magging described in step (2) and the Counterfloatating desiliconization described in step (4) use is 2000 revs/min; Its wheel speed of flotation device that particulate sludge reverse flotation de-magging described in step (5) uses is 1500 revs/min.
Embodiment 14, a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-13 described in any one: the flow process of step (2) and/or the reverse flotation de-magging operation described in step (5) is only roughly selects operation, or by roughly selecting, selected and scan operation and jointly form.
Embodiment 15, a kind of middle-low grade silico-calcium matter Collophanite flotation technique of embodiment 1-14 described in any one: the flow process of the Counterfloatating desiliconization operation described in step (4) is only roughly selects operation, or roughly select, selected and scan operation and jointly form.
Embodiment 16: a kind of silico-calcium matter mid-low grade collophanite ore floatation process, with reference to figure 1, its step is as follows: by broken for the collophane of middle-low grade ore grinding to monomer dissociation, mog-0.074mm grade accounts for 60%.Being adjusted to concentration is 35%, enter flotation tank diameter, add adjusting agent phosphoric acid and de-magging collector is sized mixing, material after sizing mixing enters reverse flotation system and carries out the operation of reverse flotation de-magging, flotation machine impeller rotating speed is 1900 revs/min, the froth pulp that obtains is de-magging mine tailing, and in groove, product is de-magging rough concentrate.De-magging rough concentrate is carried out desliming operation, obtains coarse grain ore in sand form product and particulate slime product.Tank diameter is entered after coarse grain ore in sand form product is adjusted to concentration 40%, add adjusting agent sodium carbonate and Counterfloatating desiliconization collecting agent is sized mixing, material after sizing mixing enters reverse flotation system and carries out Counterfloatating desiliconization operation, its wheel speed of flotation device is 1900 revs/min, froth pulp is desiliconization mine tailing, and in groove, product is coarse-grain coarse ore concentrate.Tank diameter is entered after particulate ore deposit slime product is adjusted to concentration 35%, add adjusting agent phosphoric acid, inorganic salts and the reverse flotation de-magging collector of flocculation are sized mixing, material after sizing mixing enters reverse flotation system, its wheel speed of flotation device is 1400 revs/min, froth pulp is sludge de-magging mine tailing, and in groove, product is fine concentrate.The concentrate that the concentrate obtain ore in sand form flotation and slime flotation obtain carries out merging and obtains bulk concentrate, is incorporated to by sludge mine tailing in first step de-magging mine tailing.
The flow process of reverse flotation de-magging system and desiliconization system is only roughly selects operation, or roughly select, selected and scan operation and jointly form.
Embodiment 18, a kind of silico-calcium matter mid-low grade collophanite ore floatation process experiment: Hubei silico-calcium matter mid-low grade collophanite ore, raw ore P
2o
5grade is 20.57%, MgO grade is 2.18%.Sample ore is crushed to-2mm and enters rod mill, and ore grinding is 56% to fineness-0.074mm.Being adjusted to concentration is 40%, enter flotation tank diameter, add adjusting agent phosphoric acid 5 kg/t respectively, de-magging collector fatty acid soaps 1.5 kg/t, size mixing 1 ~ 2 minute, the material after sizing mixing enters reverse flotation system and carries out de-magging operation, and flotation device rotating speed is 1900 revs/min, the froth pulp that obtains is de-magging mine tailing, and in groove, product is de-magging rough concentrate.De-magging rough concentrate is carried out desliming operation, obtains coarse grain ore in sand form product and particulate slime product.Tank diameter is entered after coarse grain ore in sand form product is adjusted to concentration 40%, add adjusting agent sodium carbonate 2.0 kg/t, desiliconization collecting agent ether amine 0.4 kg/t, size mixing 1 ~ 2 minute, material after sizing mixing enters reverse flotation system desiliconization operation, flotation device rotating speed is 1900 revs/min, and froth pulp is desiliconization mine tailing, and in groove, product is coarse-grain coarse ore concentrate.Tank diameter is entered after particulate ore deposit slime product is adjusted to concentration 40%, add adjusting agent phosphoric acid 2 kg/t, flocculation inorganic salts aluminum sulfate 0.3 kg/t, de-magging collector fatty acid soaps 0.5 kg/t, size mixing 1 ~ 2 minute, the material after sizing mixing enters reverse flotation system and again carries out the operation of reverse flotation de-magging, and the rotating speed of flotation device is 1500 revs/min, froth pulp is sludge de-magging mine tailing, and in groove, product is fine concentrate.The concentrate that the concentrate obtain ore in sand form desiliconization flotation and the flotation of sludge de-magging obtain carries out merging to obtain bulk concentrate, is incorporated to by sludge mine tailing in first step de-magging mine tailing.Gained flotation results is in table 1.
Table 1 flotation results
As can be seen from test data, after reverse flotation de-magging, the P of rough concentrate
2o
5grade is 23.39%, MgO grade is 0.61%.Coarse grain ore in sand form part P is obtained after desliming
2o
5grade is 24.43%, MgO grade is 0.52%, particulate sludge P
2o
5grade is 17.97%, MgO grade is 1.08%, it is larger that sludge deviates from amount, grade is lower, this part sludge can not be incorporated into concentrate, as tailings glass, can not obtain thin K grade after treatment more than 20%, thin X grade drops to 11.07%, can be incorporated to concentrate and tailings respectively, finally can obtain grade is 30.54%, and the rate of recovery is the phosphorus concentrate of 75.07%.
Claims (9)
1. a middle-low grade silico-calcium matter Collophanite flotation technique, is characterized in that, specifically comprise the following steps:
(1) ore grinding after mid-low grade collophanite ore crushing raw ore is dissociated to mineral monomer;
(2) ore grinding product adds water to size mixing and enter tank diameter to applicable concentration, add appropriate adjusting agent phosphoric acid and reverse flotation de-magging collector is sized mixing, material after sizing mixing enters reverse flotation system and carries out the operation of reverse flotation de-magging, and froth pulp is de-magging mine tailing, and in groove, product is de-magging concentrate;
(3) desliming operation is carried out to de-magging concentrate, obtain coarse grain ore in sand form product and particulate slime product;
(4) coarse grain ore in sand form product adds water to size mixing and enter tank diameter to applicable concentration, add appropriate adjusting agent sodium carbonate and Counterfloatating desiliconization collecting agent is sized mixing, material after sizing mixing enters reverse flotation system and carries out Counterfloatating desiliconization operation, and froth pulp is desiliconization mine tailing, and in groove, product is coarse-grain coarse ore concentrate;
(5) tank diameter is entered after particulate slime product being adjusted to applicable concentration, add appropriate adjusting agent phosphoric acid, the inorganic salts of flocculation and reverse flotation de-magging collector to size mixing, material after sizing mixing carries out the operation of reverse flotation de-magging after entering reverse flotation system again, froth pulp is sludge mine tailing, and in groove, product is fine concentrate;
Coarse-grain coarse ore concentrate and fine concentrate merging obtain final concentrate, and desiliconization mine tailing and the merging of sludge mine tailing obtain true tailings.
2. a kind of middle-low grade silico-calcium matter Collophanite flotation technique according to claim 1, is characterized in that: mainly consisting of of described mid-low grade collophanite ore: P
2o
5grade be the grade of 10 ~ 30%, MgO be 2 ~ 10%, SiO
2grade is 10 ~ 40%, and all the other are impurity.
3. a kind of middle-low grade silico-calcium matter Collophanite flotation technique according to claim 1, is characterized in that: the mog in step (1) accounts for 45 ~ 85% for-0.074mm grade.
4. a kind of middle-low grade silico-calcium matter Collophanite flotation technique according to claim 1, is characterized in that: in step (2) and/or step (4), size mixing during flotation to mass concentration be 25 ~ 50%.
5. a kind of middle-low grade silico-calcium matter Collophanite flotation technique according to claim 1, is characterized in that: the desliming operation described in step (3) adopts one or several combinations in screening desliming, eddy flow desliming or mechanical desliming.
6. a kind of middle-low grade silico-calcium matter Collophanite flotation technique according to claim 1, is characterized in that: described de-magging collector is selected from oleate soap, oxidized paraffin wax soap, or the combination medicament that oleate soap, oxidized paraffin wax soap and other surfactants form; Described desiliconization collecting agent is selected from fatty amine, ether amine, polyamines or other cationic surfactant; The inorganic salts of described flocculation are selected from AlCl
3, Al
2(SO4)
3or their polymer.
7. a kind of middle-low grade silico-calcium matter Collophanite flotation technique according to claim 1, is characterized in that: its wheel speed of flotation device that the reverse flotation de-magging described in step (2) and the Counterfloatating desiliconization described in step (4) use is 1800 ~ 2100 revs/min; Its wheel speed of flotation device that particulate sludge reverse flotation de-magging described in step (5) uses is 1300 ~ 1600 revs/min.
8. a kind of middle-low grade silico-calcium matter Collophanite flotation technique according to claim 1, it is characterized in that: the flow process of step (2) and/or the reverse flotation de-magging operation described in step (5) is only roughly selects operation, or by roughly selecting, selected and scan operation and jointly form.
9. a kind of middle-low grade silico-calcium matter Collophanite flotation technique according to claim 1, is characterized in that: the flow process of the Counterfloatating desiliconization operation described in step (4) is only roughly selects operation, or roughly select, selected and scan operation and jointly form.
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| CN107252736A (en) * | 2017-06-21 | 2017-10-17 | 远安县燎原矿业有限责任公司 | A kind of appositional pattern silicon calcium quality ore bi-anti-symmetric matrix technique |
| CN108927294A (en) * | 2017-05-24 | 2018-12-04 | 中蓝连海设计研究院 | A kind of method for floating of silicon calcium collophanite |
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| CN115532425A (en) * | 2022-09-22 | 2022-12-30 | 湖北兴顺矿业有限公司 | Combined Separation Process of Magnesium Removal, Classification and Desiliconization of Low-grade Collophosite |
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| CN114100865A (en) * | 2020-08-31 | 2022-03-01 | 中蓝连海设计研究院有限公司 | Flotation method for ultrafine particle phosphorite |
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| CN113182077A (en) * | 2021-04-08 | 2021-07-30 | 宜都兴发化工有限公司 | Reverse flotation process for synchronously removing magnesium and aluminum in phosphorite |
| CN113245064A (en) * | 2021-04-30 | 2021-08-13 | 瓮福（集团）有限责任公司 | Method for removing sesquioxide in complex refractory collophanite |
| CN115532425A (en) * | 2022-09-22 | 2022-12-30 | 湖北兴顺矿业有限公司 | Combined Separation Process of Magnesium Removal, Classification and Desiliconization of Low-grade Collophosite |
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