CN103480501A - Phosphate ore floatation method and system - Google Patents
Phosphate ore floatation method and system Download PDFInfo
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- CN103480501A CN103480501A CN201310481692.1A CN201310481692A CN103480501A CN 103480501 A CN103480501 A CN 103480501A CN 201310481692 A CN201310481692 A CN 201310481692A CN 103480501 A CN103480501 A CN 103480501A
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Abstract
The invention discloses a floatation method and a flotation system for floating and separating gangue minerals from collophanite. A phosphate ore floatation method comprises the following steps: before ore slurry enters a floatation column, a rotational flow foaming and mineralization pre-treating process is carried out; the rotational flow foaming and mineralization pre-treatment is used for enabling the ore slurry and compressed air to be jet into a cylindrical barrel body of a rotational flow foaming and mineralization device along the tangential direction to do vortex movement to form a rotational flow; bubbles are dispersed into the ore slurry and are mineralized by cutting and agitation of blades in the barrel body. The barrel body of the rotational flow foaming and mineralization device is the combination of a hollow cone and a cylinder; the blades are distributed in the cylindrical barrel body along the radial direction; a feeding opening of the rotational flow foaming and mineralization device is arranged along the tangential direction of the cylindrical barrel body; a discharging pipe is arranged at a conical end. According to the floatation method and the flotation system, the bubbles can be dispersed into the ore slurry sufficiently before flotation and are mineralized rapidly, the blocking of a foaming device can be avoided, the height of the floatation column is reduced, and a good separation environment is created for the flotation process.
Description
Technical field
The present invention relates to a kind of method for floating and floatation system, particularly a kind of method for floating and system of separating gangue mineral for Collophanite flotation.
Background technology
Phosphorus ore is to produce inorganic phosphorus fertilizer and essential and don't the renewable and alternative Important Mineral Resources of other phosphorus chemical product.The Phosphorite Resources in China reserves are at the forefront in the world, but mostly belong to the mid-low grade collophanite ore of difficult choosing, just can reach the standard of producing the phosphorus chemical product raw material through beneficiation enrichment.
Flotation is to process the most effective a kind of beneficiation method of collophane.Be " glue " noncrystalline particulate aggregate and the tight symbiosis of impure mineral but the characteristics of collophane are phosphorus ore containings, ore must grind to such an extent that very carefully just can make the phosphorus ore containing monomer dissociation.The fine mineral quality is little, momentum is low, and floatation process is difficult to and bubble generation effective collision, causes flotation froth mineralising difficulty; And, because granularity is little, specific area large, surface can be high, between phosphorus ore thing and gangue mineral, very easily mutually adhering to reunite affects sharpness of separation; Moreover fine mineral solubility is large, in ore pulp, unavoidable ion concentration is high, flotation pulp solution chemistry complexity.
The special nature of Collophanite flotation, cause it often unsatisfactory with conventional flotation device separating effect.And flotation column has the advantages such as simple in structure, that floor space is little, cost of investment is low, the construction period is short, especially easily produce the required microvesicle of fine flotation, increase the surface area of bubble, and then the collision probability of raising bubble and purpose mineral, can also create better static sorting environment and certain thickness flotation froth cleaning layer simultaneously, reduce ore particle and mutually adhere to the impact of reuniting on sharpness of separation, therefore aspect the thin material of processing, there is larger development space.
Yet existing flotation column is due to its application in Collophanite flotation that existed following technical problem to hinder: (1) flotation column generally all adopts jet or inflation foam device to produce the required micro-bubble of flotation.The saline minerals that this class of phosphorus ore is had to certain solubility, in floatation process, under certain condition, the mineral component of dissolving easily deposition is attached on the nozzle or pore that foam device is tiny, causes foam device to stop up, and the equipment that affects runs well.(2) mineralising of flotation bubble is to realize by bubble and the mineral mode that adverse current is collided in post.Although the surface area of fine mineral and micro-bubble is large, but under the passive flow environment of flotation column, their striking momentum is still less, break through by collision the probability that hydration shell adheres each other less, bubble mineralization speed is slow, and what phosphate rock floating was used in addition is all fatty acid collecting agent, and dissolution dispersity is selectively relative poor with flotation, causing phosphorus ore floatability itself is not just fine, more obvious on the impact of bubble mineralization speed.(3) time in order to guarantee that bubble mineralization is required, the height of flotation column is generally all higher, and this inevitably causes gas-liquid skewness in flotation column, the bad control of flotation conditions, bubble easily annexs or breaks in floating-upward process, produces so-called " magic flower " and " channel " phenomenon.Although the suitable medium of filling in flotation column, the gas-liquid that can control in post distributes, overcome bubble merging and break, avoid " magic flower " and " channel " phenomenon, but the replacing of filling medium and maintenance are inconvenient, passage is easily blocked by sludge, and the minimizing of cylinder dischargeable capacity also can affect the disposal ability of equipment.
Summary of the invention
The modifying device that the purpose of this invention is to provide a kind of Collophanite flotation post, can make bubble just permeate into fully in ore pulp before flotation and rapid mineralising, after entering flotation column, ore pulp do not need just can realize flotation through mineralization process, improve flotation speed, shorten the time of staying of ore pulp in flotation column, avoid the obstruction of foam device, reduce the height of flotation column, and create good sorting environment for floatation process.
For achieving the above object, adopt technical scheme as follows:
A kind of phosphate rock floating method, ore pulp carries out the pretreatment of eddy flow foaming mineralising before entering flotation column; The pretreatment of described eddy flow foaming mineralising is that cylinder cylindrical shell that ore pulp and compressed air are tangentially injected to eddy flow foaming mineralization device is done eddying motion and formed eddy flow, then makes bubble permeate in ore pulp also mineralising through the cutting of the blade that is fixedly installed in cylindrical shell.
A kind of phosphate rock floating system, comprise the agitator of sizing mixing, eddy flow foaming mineralization device and flotation column, the agitator of sizing mixing is communicated with by ore slurry pump with eddy flow foaming mineralization device, the drainage conduit of eddy flow foaming mineralization device directly is communicated with flotation column, between eddy flow foaming mineralization device and ore slurry pump, is provided with compressed air inlet; The opening part of the hollow cylinder that the cylindrical shell of described eddy flow foaming mineralization device is an end opening and the hollow cone of bottom opening is combined into, blade radially stationary distribution in the cylinder cylindrical shell, the charging aperture of eddy flow foaming mineralization device arranges along cylinder cylindrical shell tangential direction, and drainage conduit is arranged at the cone cylinder top.
Press such scheme, described blade is right-angled intersection formula blade arranged side by side.
Press such scheme, the upper and lower two ends of described flotation column are provided with stabilier.
Press such scheme, between described upper end stabilier and flotation capital, rinse water arrangement is arranged.
Press such scheme, described lower end stabilier with at the bottom of flotation column between also be provided with part flow arrangement and be communicated with ore slurry pump.
Press such scheme, the fineness ratio of described flotation column is 0.2-0.5.
The present invention is according to the principle of bubble and ore pulp " disorderly state mineralising; static sorting ", at the external special eddy flow foaming of flotation column mineralization device, at first ore pulp and compressed air with certain pressure tangentially enter tapered cylindrical shell by feed pipe, and do eddying motion in cylindrical shell, air is become a large amount of even and tiny bubbles by the blade cuts radially distributed in cylindrical shell, and fully permeates in ore pulp; The strong turbulent flow that eddy flow produces provides a kind of efficient mineralising mode of bubble, and the bubble of disperse is owing to ore particle, very high impact kinetic energy being arranged, therefore mineralising rapidly; Ore pulp after mineralising feeds flotation column by the drainage conduit in tapering, then in flotation column, realizes static sorting.
Beneficial effect of the present invention:
(1) the required micro-bubble of flotation is that the air of doing fast eddying motion by blade cuts produces, and owing in device, not having tiny nozzle or pore, therefore can not produce blockage problem; Bubble can permeate in ore pulp fast fully in addition, thereby the void fraction in ore pulp can be higher, and the flotation conditions convenient operation is controlled.
(2) under strong turbulent-flow conditions, fully bubble and the ore particle of disperse have very high impact kinetic energy, and mineralization velocity is very fast, after ore pulp enters flotation column, at once just can form the flotation of mineralized froth layer.
(3) bubble and ore pulp at first the foaming mineralization device in disorderly state mineralising, then enter static sorting in flotation column, " disorderly state mineralising; the static sorting " process that belongs to real meaning, can overcome in same flotation unit and not only require " disorderly state mineralising " but also require " static sorting ", the conflicting problem of operation controlled condition.
(4) after mineralising in advance, it is very fast that ore pulp enters the flotation speed of flotation column, with short flotation column, can meet the flotation requirement, not only can reduce equipment investment and installing space, also is convenient to operation and the control of equipment.
The accompanying drawing explanation
Fig. 1: eddy flow foaming mineralization device schematic diagram.
Fig. 2: phosphate rock floating system and device schematic diagram.
The specific embodiment
Following examples are explaination technical scheme of the present invention further, not as the restriction to the claim protection domain.
With reference to Fig. 1,2, the agitator 7 of sizing mixing is communicated with by ore slurry pump 6 with eddy flow foaming mineralization device 4, and the drainage conduit 3 of eddy flow foaming mineralization device 4 directly is communicated with flotation column, between eddy flow foaming mineralization device and ore slurry pump, is provided with compressed air inlet; The opening part of the hollow cylinder that the cylindrical shell of described eddy flow foaming mineralization device 4 is an end opening and the hollow cone of bottom opening is combined into, blade 2 radially is distributed in the cylinder cylindrical shell, can be a plurality of right-angled intersection formula blades arranged side by side, the charging aperture 1 of eddy flow foaming mineralization device 4 arranges along cylinder cylindrical shell tangential direction, and drainage conduit is arranged at the cone cylinder top; Described flotation column is provided with stabilier 8 in two ends Shang Xia 5, and between upper end stabilier and flotation capital, rinse water arrangement can be arranged, the lower end stabilier with at the bottom of flotation column between can also be provided with part flow arrangement and be communicated with ore slurry pump.
With reference to accompanying drawing 2, during phosphate rock floating system works of the present invention, at first the ore pulp that is ground to desired particle size is fed to the agitator 7 of sizing mixing, with the floating agent added in agitator, fully act on, make purpose mineral hydrophobization, then be transported to eddy flow foaming mineralization device 4 through ore slurry pump 6, with certain pressure, feed in eddy flow foaming mineralization device 4 again with together with compressed air, can make bubble just permeate into fully in ore pulp before flotation and rapid mineralising, in flotation column 5, the purpose mineral overflow and become froth pulp with bubble floating and from top, hydrophilic mineral are discharged and are become the underflow product by bottom under Action of Gravity Field, after entering flotation column, ore pulp do not need just can realize flotation through mineralization process, greatly improved flotation speed, shortened the time of staying of ore pulp in flotation column, thereby can reduce the height of flotation column, and create good sorting environment for floatation process.Wherein ore pulp pressure is controlled by pump 6, and size depends primarily on specification or the ore pulp treating capacity of equipment, but at least should guarantee that ore pulp can do eddying motion in device 4; Air pressure is controlled by air compressor machine, and size depends primarily on the required aeration quantity of flotation.
With reference to accompanying drawing 1, at first ore pulp and air with certain pressure tangentially enter cylindrical shell by feed pipe 1, and do eddying motion in cylindrical shell, a plurality of right-angled intersection formula blades 2 cutting compressed air formation tiny bubbles that are fixedly installed on side by side in cylindrical shell permeate in ore pulp, bubble in the disorderly state of vortex stream with hydrophobic purpose mineral grain high velocity impact, form mineral laden bubble, then enter flotation column 5 by drainage conduit 3.
With reference to accompanying drawing 2, in flotation column 5, stabilier 8 is established at upper and lower two ends, and purpose is that flotation column is divided into to the froth zone on top, minute constituency at middle part and the underflow district of bottom, to control the fluidised form of multiphase flow in post, creates good static layer flow point ring selection border.Rinse water arrangement is established in its middle and upper part, can play the effect of impurity in reverse cleaning mineralized froth, and bottom arranges part flow arrangement and separates a certain amount of circulation ore pulp, can, when guaranteeing ore slurry pump pressure, be convenient to regulate the height of mineral syrup liquid in flotation column.
In addition, the flotation speed of ore pulp in flotation column is very fast, and the holdup time is very short, and flotation column 5 can be used the pillar of fineness ratio 0.2～0.5.
The improved floatation system of the present invention is for the collophane in somewhere, flotation Guizhou, and its bubble disperse is even, and mineralization velocity is fast, system run all right.Under identical regime of agent and grinding particle size condition, with the conventional flotation post, with the flotation device system, compare, separation index obviously better (in Table 1) not only, and also collecting agent consumption can reduce by 10% left and right.
The index contrast of somewhere, the different flotation unit flotation Guizhou of table 1 collophane
| Flotation unit | Phosphorus concentrate P 2O 5Grade/% | Phosphorus concentrate P 2O 5The rate of recovery/% | The efficiency of separation/% |
| Improved system | 30.81 | 82.73 | 20.73 |
| The conventional flotation column system | 30.07 | 79.69 | 18.51 |
| The flotation device system | 29.62 | 75.34 | 16.94 |
Claims (7)
1. a phosphate rock floating method, is characterized in that ore pulp carries out the pretreatment of eddy flow foaming mineralising before entering flotation column; The pretreatment of described eddy flow foaming mineralising is that the cylindrical tube that ore pulp and compressed air are tangentially injected to eddy flow foaming mineralization device forms eddy flow, then makes bubble permeate in ore pulp also mineralising through the cutting of the blade that is fixedly installed in cylindrical shell.
2. a phosphate rock floating system, it is characterized in that comprising size mixing agitator, eddy flow foaming mineralization device and flotation column, the agitator of sizing mixing is communicated with by ore slurry pump with eddy flow foaming mineralization device, the drainage conduit of eddy flow foaming mineralization device directly is communicated with flotation column, between eddy flow foaming mineralization device and ore slurry pump, is provided with compressed air inlet; The opening part of the hollow cylinder that the cylindrical shell of described eddy flow foaming mineralization device is an end opening and the hollow cone of bottom opening is combined into, blade radially stationary distribution in the cylinder cylindrical shell, the charging aperture of eddy flow foaming mineralization device arranges along cylinder cylindrical shell tangential direction, and drainage conduit is arranged at the cone cylinder top.
3. phosphate rock floating system as claimed in claim 2, is characterized in that described blade is right-angled intersection formula blade arranged side by side.
4. phosphate rock floating system as claimed in claim 2 or claim 3, is characterized in that the upper and lower two ends of described flotation column are provided with stabilier.
5. phosphate rock floating system as claimed in claim 4, is characterized in that, between described stabilier and flotation capital, rinse water arrangement is arranged.
6. phosphate rock floating system as claimed in claim 4, it is characterized in that described stabilier with at the bottom of flotation column between be provided with part flow arrangement and be communicated with ore slurry pump.
7. as claim 2,3,5, the described phosphate rock floating system of 6 any one, the fineness ratio that it is characterized in that described flotation column is 0.2-0.5.
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| CN201310481692.1A CN103480501B (en) | 2013-10-15 | 2013-10-15 | Phosphate ore floatation method and system |
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| CN201310481692.1A CN103480501B (en) | 2013-10-15 | 2013-10-15 | Phosphate ore floatation method and system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801429A (en) * | 2015-04-03 | 2015-07-29 | 河南理工大学 | Combined type column floating selection system |
| CN104841571A (en) * | 2015-05-29 | 2015-08-19 | 武汉工程大学 | Novel flotation column and flotation method thereof |
| CN104841570A (en) * | 2015-06-08 | 2015-08-19 | 武汉工程大学 | Novel flotation column |
| CN107967379A (en) * | 2017-11-08 | 2018-04-27 | 云南磷化集团有限公司 | Computational methods are amplified in Collophanite flotation engineering design |
| CN109290070A (en) * | 2018-09-25 | 2019-02-01 | 北矿机电科技有限责任公司 | A kind of device weakening foam and slurry interface oscillation energy |
| CN109759243A (en) * | 2019-01-31 | 2019-05-17 | 中国矿业大学 | A kind of the column sorting unit and method of mineralising-FLOTATION SEPARATION |
| CN110548603A (en) * | 2019-09-27 | 2019-12-10 | 中国恩菲工程技术有限公司 | Foam sorting system |
| WO2020220582A1 (en) * | 2019-04-29 | 2020-11-05 | 中国矿业大学 | Forced turbulence mineralization reaction device and method |
| CN113522535A (en) * | 2020-04-17 | 2021-10-22 | 韩国原子力研究院 | Flotation equipment for selectively separating nonmetallic minerals |
| CN114260104A (en) * | 2021-12-23 | 2022-04-01 | 矿冶科技集团有限公司 | Flotation equipment and flotation method suitable for collecting foam products |
| CN116625990A (en) * | 2023-06-05 | 2023-08-22 | 冠礼控制科技（上海）有限公司 | Bubble-resistant high-stability refractometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104801429A (en) * | 2015-04-03 | 2015-07-29 | 河南理工大学 | Combined type column floating selection system |
| CN104841571A (en) * | 2015-05-29 | 2015-08-19 | 武汉工程大学 | Novel flotation column and flotation method thereof |
| CN104841570A (en) * | 2015-06-08 | 2015-08-19 | 武汉工程大学 | Novel flotation column |
| CN107967379A (en) * | 2017-11-08 | 2018-04-27 | 云南磷化集团有限公司 | Computational methods are amplified in Collophanite flotation engineering design |
| CN109290070A (en) * | 2018-09-25 | 2019-02-01 | 北矿机电科技有限责任公司 | A kind of device weakening foam and slurry interface oscillation energy |
| CN109290070B (en) * | 2018-09-25 | 2020-12-11 | 北矿机电科技有限责任公司 | Device for weakening foam and ore pulp interface oscillation energy |
| CN109759243A (en) * | 2019-01-31 | 2019-05-17 | 中国矿业大学 | A kind of the column sorting unit and method of mineralising-FLOTATION SEPARATION |
| CN109759243B (en) * | 2019-01-31 | 2020-07-03 | 中国矿业大学 | Column sorting device and method for mineralization-flotation separation |
| WO2020220582A1 (en) * | 2019-04-29 | 2020-11-05 | 中国矿业大学 | Forced turbulence mineralization reaction device and method |
| CN110548603A (en) * | 2019-09-27 | 2019-12-10 | 中国恩菲工程技术有限公司 | Foam sorting system |
| CN110548603B (en) * | 2019-09-27 | 2024-05-28 | 中国恩菲工程技术有限公司 | Foam sorting system |
| CN113522535A (en) * | 2020-04-17 | 2021-10-22 | 韩国原子力研究院 | Flotation equipment for selectively separating nonmetallic minerals |
| US11958062B2 (en) | 2020-04-17 | 2024-04-16 | Korea Atomic Energy Research Institute | Float sorting device for selective separation of non-metallic minerals |
| CN114260104A (en) * | 2021-12-23 | 2022-04-01 | 矿冶科技集团有限公司 | Flotation equipment and flotation method suitable for collecting foam products |
| CN114260104B (en) * | 2021-12-23 | 2023-08-08 | 矿冶科技集团有限公司 | Flotation equipment and flotation method suitable for collecting foam products |
| CN116625990A (en) * | 2023-06-05 | 2023-08-22 | 冠礼控制科技（上海）有限公司 | Bubble-resistant high-stability refractometer |
| CN116625990B (en) * | 2023-06-05 | 2023-12-08 | 冠礼控制科技（上海）有限公司 | Bubble-resistant high-stability refractometer |
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