CN113019683A - Treatment method of mixed low-grade collophanite - Google Patents
Treatment method of mixed low-grade collophanite Download PDFInfo
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- CN113019683A CN113019683A CN202110263036.9A CN202110263036A CN113019683A CN 113019683 A CN113019683 A CN 113019683A CN 202110263036 A CN202110263036 A CN 202110263036A CN 113019683 A CN113019683 A CN 113019683A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000012141 concentrate Substances 0.000 claims abstract description 47
- 238000005188 flotation Methods 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 12
- 239000010452 phosphate Substances 0.000 claims abstract description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000005201 scrubbing Methods 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 239000008396 flotation agent Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000003814 drug Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract description 2
- 238000012993 chemical processing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 229910001748 carbonate mineral Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- -1 usually Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a treatment method of mixed low-grade collophanite, and relates to the technical field of collophanite processing. The mixed low-grade collophanite is classified after ore washing and screening to remove slime containing a large amount of Fe and Al oxides, so that the loss of the slime to medicaments in the flotation process is greatly reduced, the contents of Fe and Al in phosphate concentrate are reduced, and the adverse effect of the slime on downstream phosphorus chemical processing is avoided. And blending the treated concentrate and the higher-grade collophanite according to a proportion, and then carrying out reverse flotation to obtain the phosphate concentrate with high technical index. By the method, the industrial utilization of the mixed low-grade collophanite is effectively realized, the process flow is simple, the existing flotation equipment is adopted, the investment is low, the production cost is low, and the economic benefit is high.
Description
Technical Field
The invention relates to the technical field of collophanite processing, in particular to a method for processing mixed low-grade collophanite.
Background
Phosphate rock is an important chemical raw material and can be used in the industries of phosphate fertilizer, medicine, food, ceramics, national defense and the like. Along with the development of national economy, the demand of phosphate ore is larger and smaller, high-grade phosphate ore is less and smaller, phosphate ore resources show a trend of gradual depletion, and only mining rich ore is difficult to meet the requirement, so that the development and utilization of mixed low-grade collophanite are enhanced urgently. The mixed low-grade collophanite refers to P2O5Less than 20% of gangue minerals, mainly a mixture of siliceous minerals and carbonate minerals, having a fine mineral-embedding size, containing a large amount of a slime rich in Fe and Al, Al2O3And Fe2O3The sum of the grades is more than 5 percent, and the ore dressing difficulty is high. When a flotation method is used for mineral separation, two gangue minerals need to be removed to enrich qualified concentrates, usually, concentrates with better indexes can be obtained after multiple times of forward and reverse flotation, but the flotation process is long, the technical and economic indexes are poor, the production cost is high, and the economic benefit is poor, so that stockpiling treatment is performed on mixed low-grade collophanite enterprises, and the industrial utilization is less.
The patent CN104858067A discloses a positive-double reverse flotation process for low-grade collophanite2O5Grade of 14-23%, MgO mass content of 1-5%, SiO2Mass of (A) contains12-30% of Fe2O3With Al2O3The high-sesqui-silsesquioxanes calcium type collophanite ore with the mass sum of more than 5 percent is firstly subjected to direct flotation desilicication, and then sequentially subjected to reverse flotation demagging and reverse flotation de-ferro-aluminosilicate mineral removal, so that the whole process flow is long, the medicament dosage is large, the cost is high, and although the concentrate meeting the index can be obtained, the industrial application value is low.
The patent CN109133018A discloses a process for comprehensively utilizing refractory low-grade collophanite, which adopts the procedures of high-temperature calcination, washing separation and the like to prepare low-grade silico-calcium phosphate rock, P2O5The raw ore with the grade of 15.11 percent can be enriched to more than 30 percent. But the process has high energy consumption, is not environment-friendly, has complex flow, high production cost and poor economic benefit.
Disclosure of Invention
The invention aims to provide a method for treating mixed low-grade collophanite, which solves the problem of low industrial utilization rate of the existing low-grade collophanite due to complex treatment process and high cost.
In order to solve the technical problems, the invention adopts the following technical scheme: a treatment method of mixed low-grade collophanite is characterized by comprising the following steps:
1) scrubbing and desliming the mixed low-grade collophanite to obtain treated concentrate;
2) blending the treated concentrate and the collophanite with higher grade according to a proportion to obtain a mixed ore;
3) performing reverse flotation operation on the mixed ore to obtain qualified phosphate concentrate;
wherein P in mixed low-grade collophanite2O516-20% of MgO, 1-4% of SiO225-40% of sesquioxide R2O33 to 6 percent of CaO and 25 to 35 percent of CaO; p in higher grade collophanite2O522 to 24 percent of MgO, 4 to 8 percent of Fe2O30.5-1.5% of Al2O3The content is 0.8 to 1.7 percent.
Further onThe technical scheme is that when ore blending is carried out in the step 2), the treated concentrate accounts for 5-30% of the total mass of the mixed ore. Ore proportioning in the proportion range can ensure concentrate P2O5The grade is more than 28 percent, the MER of the concentrate is less than 0.012, and the concentrate can be mixed into the treated concentrate to the maximum extent.
The further technical scheme is that the specific process of scrubbing and desliming in the step 1) is as follows: washing uncrushed mixed low-grade collophanite by a washer, then, carrying out screening operation by a vibrating screen, enabling products below the vibrating screen to enter a hydrocyclone for classification, enabling the overflow part of the hydrocyclone to be slime tailings, and combining the sand setting of the hydrocyclone and products above the vibrating screen into concentrate after scrubbing and desliming treatment.
The further technical scheme is that the specific flow of the reverse flotation operation in the step 3) is as follows: and (3) putting the mixed ore into a ball mill for grinding, controlling the granularity of the ground ore product to be more than 90% in a range of-0.074 mm, mixing the ground ore product to a concentration of 25%, and pumping the mixed ore into a flotation machine for reverse flotation and magnesium removal.
The further technical proposal is that the reverse flotation reagent is sulfuric acid, phosphoric acid, YP 6-6; the using amount of sulfuric acid is 10-20 kg/t of raw ore, the using amount of phosphoric acid is 1-5 kg/t of raw ore, and the using amount of a collector YP6-6 is 0.7-0.8 kg/t of raw ore.
The further technical proposal is that P in the phosphate concentrate finally obtained in the step 3)2O5The content is more than 28 percent, and the MgO content is less than 0.9 percent.
Compared with the prior art, the invention has the beneficial effects that: the mixed low-grade collophanite is classified after ore washing and screening to remove slime containing a large amount of Fe and Al oxides, so that the loss of the slime to medicaments in the flotation process is greatly reduced, the contents of Fe and Al in phosphate concentrate are reduced, and the adverse effect of the slime on downstream phosphorus chemical processing is avoided. And blending the treated concentrate and the higher-grade collophanite according to a proportion, and then carrying out reverse flotation to obtain the phosphate concentrate with high technical index. By the method, the industrial utilization of the mixed low-grade collophanite is effectively realized, the process flow is simple, the existing flotation equipment is adopted, the investment is low, the production cost is low, and the economic benefit is high.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The experiment is carried out by taking mixed low-grade collophanite piled up in a certain place in Yunnan as raw ore, and the raw ore P of the mixed low-grade collophanite is2O5The content is 17.02%, the raw ore is added into an ore washer to be fully scrubbed and then is sent into a vibrating screen to be screened, the undersize fraction enters two sections of cyclones to be deslimed, and the cyclone sand setting and the oversize fraction of the vibrating screen are combined into the treated concentrate. Carrying out ore blending operation on the processed concentrate and the higher-grade collophanite, wherein the ore blending mass ratio is that the processed concentrate/(the processed concentrate and the higher-grade collophanite) is 20%, feeding the concentrate into a ball mill for grinding, the granularity of a ground product is controlled to be about 90% in the proportion of-0.074 mm, the ground product is mixed to be 25% in concentration and then pumped into a flotation machine for reverse flotation and magnesium removal, and the consumption of the medicinal agents in the flotation process is as follows: the dosage of sulfuric acid is 19.1kg/t, the dosage of phosphoric acid is 1.43kg/t, and the dosage of YP6-6 is 0.71 kg/t. The indexes in the experiment are shown in Table 1
TABLE 1
| Name (R) | P2O5 | MgO | Fe2O3 | Al2O3 | SiO2 |
| Mixed low-grade collophanite | 17.02 | 3.62 | 1.67 | 3.61 | 13.64 |
| Scouring concentrates | 18.47 | 4.13 | 1.21 | 2.20 | 29.09 |
| Higher grade collophanite | 22.86 | 5.42 | 0.90 | 0.98 | 13.64 |
| Mixed ore | 21.98 | 5.16 | 0.96 | 1.22 | 16.73 |
| Flotation of concentrates | 28.20 | 0.91 | 0.98 | 1.67 | 20.17 |
As can be seen from Table 1, P in the raw ore is obtained after scrubbing and desliming of the mixed low-grade collophanite2O5From 17.02% to 18.47%, and sesquioxide (R)2O3) The content is reduced, and the concentrate P is subjected to flotation after ore blending2O5The content is 28.20 percent, and the reasonable utilization of the mixed low-grade collophanite is realized.
Example 2
The experiment is carried out by taking mixed low-grade collophanite piled up in a certain place in Yunnan as raw ore, and the raw ore P of the mixed low-grade collophanite is2O5The content is 16.8%, the raw ore is added into an ore washer to be fully scrubbed and then is sent into a vibrating screen to be screened, the undersize fraction enters two sections of cyclones to be deslimed, and the cyclone sand setting and the oversize fraction of the vibrating screen are combined into the treated concentrate. Carrying out ore blending operation on the processed concentrate and the higher-grade collophanite, wherein the ore blending mass ratio is that the processed concentrate/(the processed concentrate and the higher-grade collophanite) is 15%, feeding the concentrate into a ball mill for grinding, the granularity of a ground product is controlled to be about 90% in the proportion of-0.074 mm, the ground product is mixed to be 25% in concentration and then pumped into a flotation machine for reverse flotation and magnesium removal, and the consumption of the medicinal agents in the flotation process is as follows: the dosage of sulfuric acid is 18.7kg/t, the dosage of phosphoric acid is 2.1kg/t, and the dosage of YP6-6 is 0.75 kg/t. The indexes in the experiment are shown in Table 2
TABLE 2
As can be seen from Table 2, P in the raw ore was removed from the mixed low-grade collophanite by scrubbing2O5From 16.80% to 18.26%, and sesquioxide (R)2O3) The content is reduced, and the concentrate P is subjected to flotation after ore blending2O5The content is 28.87 percent, and the reasonable utilization of the mixed low-grade collophanite is realized.
Example 3
The experiment is carried out by taking mixed low-grade collophanite piled up in a certain place in Yunnan as raw ore, and the raw ore P of the mixed low-grade collophanite is2O5The content is 16.8%, the raw ore is added into an ore washer to be fully scrubbed and then is sent into a vibrating screen to be screened, the undersize fraction enters two sections of cyclones to be deslimed, and the cyclone sand setting and the oversize fraction of the vibrating screen are combined into the treated concentrate. Carrying out ore blending operation on the processed concentrate and the higher-grade collophanite, wherein the ore blending mass ratio is that the processed concentrate/(the processed concentrate and the higher-grade collophanite) is 10 percent, feeding the concentrate into a ball mill for grinding, controlling the granularity of a ground product to be about 90 percent in a proportion of-0.074 mm, mixing the ground product to the concentration of 25 percent, and pumping the mixed product into a flotation machine for reverse flotation and magnesium removal, wherein the consumption of the medicinal agents in the flotation process is as follows: the dosage of sulfuric acid is 17.5kg/t, the dosage of phosphoric acid is 1.8kg/t, and the dosage of YP6-6 is 0.70 kg/t. The indexes in the experiment are shown in Table 3
TABLE 3
From the results of examples 1, 2, 3 it can be seen that: the process is used for treating the mixed low-grade collophanite to obtain higher-grade phosphate concentrate, obtains good economic benefit and has demonstration significance for the application of the mixed low-grade collophanite. The high-grade carbonate type collophanite and the mixed low-grade collophanite are adopted to scrub the concentrate for mixed flotation, so that the loss caused by the overhigh grade of the concentrate of the high-grade carbonate type collophanite can be avoided, meanwhile, the low-grade mixed collophanite can be utilized in a large scale, and the problem that the mixed collophanite is complex in independent application process and high in cost and cannot be utilized is avoided.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts or arrangements, other uses will also be apparent to those skilled in the art.
Claims (6)
1. A treatment method of mixed low-grade collophanite is characterized by comprising the following steps:
1) scrubbing and desliming the mixed low-grade collophanite to obtain treated concentrate;
2) blending the treated concentrate and the collophanite with higher grade according to a proportion to obtain a mixed ore;
3) performing reverse flotation operation on the mixed ore to obtain qualified phosphate concentrate;
wherein P in mixed low-grade collophanite2O516-20% of MgO, 1-4% of SiO225-40% of sesquioxide R2O33 to 6 percent of CaO and 25 to 35 percent of CaO; p in higher grade collophanite2O522 to 24 percent of MgO, 4 to 8 percent of Fe2O30.5-1.5% of Al2O3The content is 0.8 to 1.7 percent.
2. The method for treating mixed low-grade collophanite according to claim 1, which is characterized in that: and during ore blending in the step 2), the treated concentrate accounts for 5-30% of the total mass of the mixed ore.
3. The method for treating mixed low-grade collophanite according to claim 1, which is characterized in that: the specific process of scrubbing and desliming in the step 1) is as follows: washing uncrushed mixed low-grade collophanite by a washer, then, carrying out screening operation by a vibrating screen, enabling products below the vibrating screen to enter a hydrocyclone for classification, enabling the overflow part of the hydrocyclone to be slime tailings, and combining the sand setting of the hydrocyclone and products above the vibrating screen into concentrate after scrubbing and desliming treatment.
4. The method for treating mixed low-grade collophanite according to claim 1, which is characterized in that: the specific flow of the reverse flotation operation in the step 3) is as follows: and (3) putting the mixed ore into a ball mill for grinding, controlling the granularity of the ground ore product to be more than 90% in a range of-0.074 mm, mixing the ground ore product to a concentration of 25%, and pumping the mixed ore into a flotation machine for reverse flotation and magnesium removal.
5. The method for treating mixed low-grade collophanite according to claim 4, which is characterized in that: the reverse flotation agent is sulfuric acid, phosphoric acid and YP 6-6; the using amount of sulfuric acid is 10-20 kg/t of raw ore, the using amount of phosphoric acid is 1-5 kg/t of raw ore, and the using amount of a collector YP6-6 is 0.7-0.8 kg/t of raw ore.
6. The method for treating mixed low-grade collophanite according to claim 1, which is characterized in that: p in the phosphate concentrate finally obtained in the step 3)2O5The content is more than 28 percent, and the MgO content is less than 0.9 percent.
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|---|---|---|---|---|
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| CN104959239A (en) * | 2015-06-26 | 2015-10-07 | 中国地质科学院矿产综合利用研究所 | Low-grade refractory weathered collophanite segmented desliming flotation process |
| CN105750089A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Magnesian collophanite separation method |
| CN105921259A (en) * | 2016-05-09 | 2016-09-07 | 贵州省冶金化工研究所 | Method for producing feed grade monocalcium phosphate through medium and low grade mixed phosphate ore |
-
2021
- 2021-03-11 CN CN202110263036.9A patent/CN113019683A/en active Pending
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| CN102886306A (en) * | 2012-07-18 | 2013-01-23 | 云南磷化集团有限公司 | Column-slot combined technology for grading calcium collophanite |
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| CN105750089A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Magnesian collophanite separation method |
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