CN102886306B - Column-slot combined technology for grading calcium collophanite - Google Patents

Column-slot combined technology for grading calcium collophanite Download PDF

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Publication number
CN102886306B
CN102886306B CN201210247327.XA CN201210247327A CN102886306B CN 102886306 B CN102886306 B CN 102886306B CN 201210247327 A CN201210247327 A CN 201210247327A CN 102886306 B CN102886306 B CN 102886306B
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flotation
ore
column
ore pulp
collophanite
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CN102886306A (en
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李耀基
罗廉明
夏敬源
刘丽芬
杨稳权
谢国先
刘鑫
赵凤婷
张朝旺
张树洪
彭杰
李海兵
李若兰
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YUNNAN LINHUA GROUP CORP Ltd
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YUNNAN LINHUA GROUP CORP Ltd
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Abstract

The invention discloses a column-slot combined technology for grading calcium collophanite,. The column-slot combined technology relates to a beneficiation method for removing carbonate impurities from the calcium collophanite by a reverse flotation manner, and comprises the following steps of (1), crushing and grinding collophanite containing the carbonate impurities, fully dissociating the collophanite and the carbonate impurities, and controlling size mixing concentration; (2), introducing ore pulp to a stirring slot; adding a ore pulp inhibitor (sulfuric acid and phosphoric acid), controlling a pH value of the ore pulp; adding a collecting agent; enabling uniformly-mineralized ore pulp to enter a flotation column, wherein foams of the flotation column are rougher tailings; bottom flow of the flotation column is rougher concentrate; (3), enabling the rougher concentrate to flow into a selection stirring slot; adding an inhibitor (the sulfuric acid), controlling the pH value of the ore pulp to be 4.0-4.5; adding the collecting agent, enabling the uniformly-mineralized ore pulp to enter a 130M<3> flotation machine; performing pneumatic flotation; finally, obtaining foam products, namely, the carbonate impurities, wherein a product in the slot is a high-grade phosphate concentrate product.

Description

One sorts calcium collophanite post groove process integration
Technical field
The present invention relates to a kind of calcium collophanite adopts reverse flotation to deviate from the beneficiation method of its carbonate impurities.
Background technology
Along with the high speed development of Phosphate Fertilizer Industry, exploitation and the consumption of phosphorus ore also sharply rise, the overall grade of phosphorus ore declines day by day, causes impurity component in phosphoric acid to become more and more complicated, and exploitation mid low grade phosphate rock stone becomes the task of top priority, for middle-low grade calcium collophanite, as long as impurity is carbonate impurities, the single reverse flotation flowsheet of main employing, removes carbonate impurities at present, be enriched with ore deposit, relatively simple in collophane sorts.The flotation device that traditional preparation equipment adopts, the problems such as it is large that flotation device exists floor space, and energy consumption is high; Although it is little that flotation column has floor space, low power consumption and other advantages, for the floatation process that thick smart flowage structure combines, adopts post post conbined usage, also there is following drawback:
1 flotation column Relative volumes is comparatively large, and flotation effect cycle period is long, especially starts shooting first two, three hours; in post, pulp density is low, and after two or three hours, effect is just stable, shuts down also that ore pulp is all emptying; be replaced as clear water, affect next normal boot-strap to avoid charge valve to block.
2 because flotation column height is relatively high, post post flotation process, and middling cycle needs to adopt transport pump, both consumes energy
Amount, in actual mechanical process, the reasons such as Chang Yinwei fouling, or cause pump line clogging, thus the normal production of impact.
Summary of the invention
Object of the present invention is only the defect overcoming prior art, provide a kind of technological process flexibly, be easy to regulation and control, equipment is few, energy consumption is low sorts calcium collophanite post groove process integration.
One of the present invention sorts calcium collophanite post groove process integration, calcium collophanitemajor impurity is carbonate impurities, and valuable mineral is phosphate mineral, and reject carbonate impurities enrichment acid salt mineral in ore dressing process, its step is as follows:
(1) by collophane crushing raw ore, the ore grinding of carbonate containing impurity, levigate is-0.074mm 90 ~ 95%, and Phosphate minerals and carbonate impurities are fully dissociated, and controlling concentration of sizing mixing is 28 ~ 33wt%;
(2) introduce in tank diameter by ore pulp, add ore pulp inhibitor sulfuric acid, phosphoric acid, it is being 3.7 ~ 4.2 that pH values of pulp is controlled, add collecting agent YP2-3 again, the uniform ore pulp of mineralising enters in the flotation column of 4.5 × 10m, and the foam of flotation column is exactly rougher tailings, and the underflow of flotation column is rougher concentration;
(3) certainly flowed in selected tank diameter by above-mentioned rougher concentration, add inhibitor sulfuric acid, it is being 4.0 ~ 4.5 that pH values of pulp is controlled, then adds collecting agent, and the uniform ore pulp of mineralising enters 130M 3flotation device in, carry out air flotation, froth pulp is carbonate impurities, and in groove, product is high grade phosphorus concentrate product.
Described sorts calcium collophanite post groove process integration, in acid medium, adopts single reverse flotation imurity-removal to be enriched with and uses ore deposit.
Described sorts calcium collophanite post groove process integration, and the proportion by subtraction of raw ore composition is: O 520.0 ~ 24.00%, MgO 4.5 ~ 6.5%, thick smart P 2o 5>=28.5%, MgO≤1.5%, selected concentrate P 2o 529.0 ~ 30.5%, MgO≤0.8%, productive rate 65.0 ~ 68%, the rate of recovery 84.0 ~ 90.0%:
It is that employing four Washdown type 4.5 × 10 M flotation columns are in parallel that described single reverse flotation imurity-removal is enriched with ore deposit, anti-floating selected employing four 130M 3flotation device is connected.
Flotation column described in step (2) is Washdown type flotation column, roughly selects interpolation sulfuric acid: 16.00 ~ 21Kg/t, phosphoric acid: 4.0 ~ 5.0 Kg/t, collecting agent 1.0 ~ 3.0 Kg/t.
Flotation seat in the plane 130M described in step (3) 3flotation device, selected interpolation sulfuric acid: 3.0 ~ 6.0Kg/t, collecting agent: 1.0 ~ 1.5 Kg/t.
Post groove flotation process of the present invention, effectively can utilize the advantage of two kinds of equipment, avoid the shortcoming of two kinds of equipment, thus reach the desirable combination of two kinds of equipment, plays the maximum efficiency of equipment, reaches energy-saving and cost-reducing object.The present invention mainly adopts post groove combined process flow, anti-floating roughly selecting adopts flotation column, anti-floating selected employing flotation device or flotation cell, be characterized in: novel energy-saving flotation column, use in parallel, reach fully to improve and sort the high object of efficiency, precision sorting flotation machine series connection uses, and extends flotation time, be conducive to improving concentrate grade, reduce reagent consumption; Make full use of the natural height of two kinds of equipment, flotation flowsheet adopts gravity flow configuration, save intercycle pump, ore pulp delivery duct and operating platform, investment reduction and operation cost, also reduce the impact on the running of floatation process continuity such as intercycle pump obstruction, fouling simultaneously; Technological process flexibly, be easy to regulation and control, one or two flotation columns have problem, and ore pulp can be switched to other flotation column, whole technological process normally runs.Avoid single device by fault, the drawback that whole process is shut down; Equipment is few, energy consumption is low: process identical sample ore, identical treating capacity on year-on-year basis, and with 2,000,000 tons/year of raw ore notes, gained every concentrate index is close, entirely adopts flotation device, needs 30M 332, flotation device, Mo Fu workshop section general power is 8292 KWh; Adopt post groove flotation process, need the flotation column 4 of 4.5 × 10 M, 130M 34, flotation device, Mo Fu workshop section selects general power to be 5231 KWh.
the feature that calcium collophanite of the present invention sorts is:
The feature of a calcium collophanite: the major impurity of calcium collophanite is carbonate (MgO), the single reverse flotation of main employing removes carbonate impurities at present, thus reaches the object that removal of impurities is enriched with use ore deposit, and flotation froth is impurity, in groove, product is concentrate, according to current mill head grade P 20 520.0 ~ 24.0%, MgO 4.5 ~ 6.5%, when concentrate grade is about 29.0 ~ 30.5%, MgO≤0.8%, concentrate yield>=65%, meet and press down many floating few flotation principles, the collophane Beneficiation flowsheet comparing other type is relatively simple;
B is thin in conjunction with collophane feed particle size, the problem that relative viscosity is large, adopts the novel Washdown type developed voluntarily to float post, at airing form, has done improvement to ore deposit mode, ratio of height to diameter etc.; Originally 2 when entering ore deposit, ore pulp diffusion reaches and evenly needs long distance, 2 change multiple spot into ore deposit to ore deposit, and the outlet of ore feeder is improved to upwards gushes out, make ore pulp homodisperse time shorten in post, reduce the height of flotation column, reduce to 10 meters from intrinsic 12 meters, saved factory building height.The reduction of ratio of height to diameter in addition, overcome flotation column ratio of height to diameter in the past large, be unfavorable for the problem of installing, dismantling, to ore deposit, multiple spot also promotes that ore pulp is uniformly distributed, and is conducive to improving flotation effect;
C new technology, new equipment process calcium collophanite, can reach energy-saving and cost-reducing object..
the invention has the beneficial effects as followsachieve new technology, commercial application that new equipment sorts in calcium collophanite, roughly select, selected operation realize self-flowing pastefill, significantly can reduce the construction investment expense of suitability for industrialized production; Flotation device consumption is few on year-on-year basis, and reagent consumption is low, and index is good; Reach energy-saving and cost-reducing object; Secondly this technological process is simple to operate, and equipment maintenance is convenient, greatly cuts operating costs.
Accompanying drawing explanation
fig. 1 is flow chart and equipment contact figure.
Fig. 2 is post groove flotation process figure.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated, and in an embodiment, apart from special instruction, all percentage compositions are mass percent.
embodiment 1
Calcium collophanite mining area, Yunnan sample ore, according to the process program that the present invention is above-mentioned, at normal temperature, adds YP4:20.60Kg/t, YP3:4.5 Kg/t, YP2-3:3.0 Kg/t, anti-floating selected employing 130M 3flotation device, selected interpolation YP4:5.5Kg/t, YP2-3:1.5 Kg/t; Following index can be obtained, raw ore P 2o 5content 22.0wt%, content of MgO 5.40wt%, concentrate P 2o 5content 30.10wt%, content of MgO 0.80wt% ,productive rate 61.61% ,the rate of recovery 84.30%, demagnesium rate 90.87%.
embodiment 2
Certain calcium collophanite mining area sample ore, according to the process program that the present invention is above-mentioned, at normal temperature, adds YP4:19.45Kg/t, YP3:4.0 Kg/t, YP2-3:2.5Kg/t, anti-floating selected employing 130M 3flotation device, selected interpolation YP4:5.0Kg/t, YP2-3:1.3 Kg/t; Following index can be obtained, raw ore P 2o 5content 24.0wt%, content of MgO 4.50wt%, concentrate P 2o 5content 30.50wt%, content of MgO 0.74wt% ,productive rate 68.60% ,the rate of recovery 87.18%, demagnesium rate 88.72%.
embodiment 3
Certain calcium collophanite mining area sample ore, according to the process program that the present invention is above-mentioned, at normal temperature, adds YP4:25.45Kg/t, YP3:4.8 Kg/t, YP2-3:3.0Kg/t, anti-floating selected employing 130M 3flotation device, selected interpolation YP4:6.5Kg/t, YP2-3:1.8 Kg/t; Following index can be obtained, raw ore P 2o 5content 20.15wt%, content of MgO 6.13wt%, concentrate P 2o 5content 29.64wt%, content of MgO 0.65wt% ,productive rate 55.84% ,the rate of recovery 82.14%, demagnesium rate 94.08%.

Claims (5)

1. sort a calcium collophanite post groove process integration, described calcium collophanitemajor impurity is carbonate impurities, and valuable mineral is phosphate mineral, and reject carbonate impurities enrichment acid salt mineral in ore dressing process, it is characterized in that, its step is as follows:
(1) by collophane crushing raw ore, the ore grinding of carbonate containing impurity, levigate is-0.074mm 90 ~ 95%, and Phosphate minerals and carbonate impurities are fully dissociated, and controlling concentration of sizing mixing is 28 ~ 33wt%;
(2) introduce in tank diameter by ore pulp, add ore pulp inhibitor sulfuric acid, phosphoric acid, it is being 3.7 ~ 4.2 that pH values of pulp is controlled, add collecting agent again, the uniform ore pulp of mineralising enters in the flotation column of 4.5 × 10m, and the foam of flotation column is exactly rougher tailings, and the underflow of flotation column is rougher concentration;
(3) certainly flowed in selected tank diameter by above-mentioned rougher concentration, add inhibitor sulfuric acid, it is being 4.0 ~ 4.5 that pH values of pulp is controlled, then adds collecting agent, and the uniform ore pulp of mineralising enters 130M 3flotation device in, carry out air flotation, froth pulp is carbonate impurities, and in groove, product is high grade phosphorus concentrate product.
2. sort calcium collophanite post groove process integration by according to claim 1, it is characterized in that, in acid medium, adopt single reverse flotation imurity-removal to be enriched with and use ore deposit.
3. sort calcium collophanite post groove process integration by according to claim 1, it is characterized in that, the proportion by subtraction of raw ore composition is: P 2o 520.0 ~ 24.00%, MgO 4.5 ~ 6.5%, rougher concentration P 2o 5>=28.5%, MgO≤1.5%, selected concentrate P 2o 529.0 ~ 30.5%, MgO≤0.8%, productive rate 65.0 ~ 68%, the rate of recovery 84.0 ~ 90.0%.
4. sort calcium collophanite post groove process integration by according to claim 1, it is characterized in that, the flotation column described in step (2) is Washdown type flotation column, roughly selects interpolation sulfuric acid: 16.00 ~ 21Kg/t, phosphoric acid: 4.0 ~ 5.0 Kg/t, collecting agent 1.0 ~ 3.0 Kg/t.
5. sort calcium collophanite post groove process integration by according to claim 1, it is characterized in that, the flotation device described in step (3) is 130M 3flotation device, selected interpolation sulfuric acid: 3.0 ~ 6.0Kg/t, collecting agent: 1.0 ~ 1.5 Kg/t.
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Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
CN103056036B (en) * 2013-01-25 2014-04-23 中国地质科学院矿产综合利用研究所 Preparation method of direct flotation collector of collophanite at room temperature
CN103551257A (en) * 2013-11-25 2014-02-05 四川省地质矿产勘查开发局成都综合岩矿测试中心 Phosphate reverse flotation process
CN103934114A (en) * 2014-04-22 2014-07-23 甘肃瓮福化工有限责任公司 Beneficiation method for medium-low-grade phosphate ores
CN104174504A (en) * 2014-07-16 2014-12-03 云南磷化集团有限公司 Direct-flotation branching floatation method of low-and-medium-grade mixed type refractory collophane
CN105728177A (en) * 2016-03-10 2016-07-06 湖北大峪口化工有限责任公司 Leaching-reverse flotation method of collophanite
CN105750089B (en) * 2016-05-09 2018-01-12 武汉科技大学 A kind of magnesia collophane method for separating
CN107890955A (en) * 2017-11-06 2018-04-10 云南磷化集团有限公司 A kind of and supporting short route method for floating of chemical plant installations
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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