CN102744151A - Branch flotation technology for silicon calcium collophanite - Google Patents
Branch flotation technology for silicon calcium collophanite Download PDFInfo
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Abstract
The invention relates to a branch flotation technology for collophanite, which comprises the following steps: crushing and grinding silicon calcium collophanite ores, and then adding water and mixing into slurry, and guiding the slurry to flow into a flotation groove; adding a regulator and a collecting agent for mixing the slurry, and then pouring into a reverse flotation system for performing reverse flotation, wherein products in the groove are reverse flotation concentrates; grading the reverse flotation concentrates into coarse fraction and fine fraction; pouring the coarse fraction part into a desilicification reverse flotation groove, adding a desilicification regulator and a desilicification collecting agent for mixing the slurry, and then pouring into a desilicification system for performing reverse flotation, wherein products in the groove are desilicification reverse flotation concentrates; pouring the fine fraction part into a normal flotation groove, adding a normal flotation pH (Potential of Hydrogen) regulator, the regulator and the collecting agent for mixing the slurry, and then performing normal flotation, wherein foam products of the normal flotation are normal flotation concentrates; mixing the normal flotation concentrates with the desilicification reverse flotation concentrates, thereby forming the final phosphorus concentrates; and concentrating, filtering and drying, thereby obtaining phosphorus concentrates. The branch flotation technology for collophanite has the advantages that the separation efficiency is high, the technic index is excellent, the content of MgO in the obtained phosphorus concentrates is lower, the quality of the concentrates is high, and the comprehensive cost of the final product of the phosphor concentrates is lower.
Description
Technical field
The present invention relates to a kind of flotation of phosphate rock technology, particularly relate to the floatation process of low-grade appositional pattern silico-calcium matter collophane in a kind of being fit to.
Background technology
Deposition phosphorite ore deposit (phosphorus ore containing is a collophane) is a topmost rock phosphate in powder in world's phosphate rock resource, accounts for more than 70% of world's phosphorus ore gross reserves, wherein the most difficult choosing of reserves maximum be in low-grade silico-calcium matter collophane.In ore dressing process, simultaneously behind expelling carbonate and the silicate impurity, could satisfy the requirement that phosphate fertilizer is processed to this type ore.At present the most employing floatation of sorting of this type ore is carried out enrichment both at home and abroad; Usually the floatation process of using has: positive reverse flotation, flotation anyway, two reverse flotation and direct flotation technology; Every kind of technology all has the advantage of self, also exists significantly not enough simultaneously.Wherein two reverse floatation process are exactly the ore-dressing technique of instead floating silicate gangue mineral behind the first reverse flotation carbonate mineral again; This technology meets floatation process " few floating press down " principle more; Two reverse flotations belong to the diffeential floatation of simple ore thing; Can not only guarantee the selectivity that floatation process is higher like this, and floatation process control and stable easily, " mechanical entrainment " of flotation and the difficulty of foam delivery reduced.But also there is bigger limitation at present in two reverse floatation process; Sludge is bigger to the influence of selecting the silicon collecting agent on the one hand, before selecting the silicon operation, must slough sludge, because the sludge amount of deviating from is bigger; Grade is lower; Being incorporated into concentrate will influence concentrate quality, be unfavorable for that concentrate grade promotes, and handle the rate of recovery that influences phosphorus again as mine tailing; Most of silicate mineral reverse flotation effect is relatively poor in the silicoide on the other hand, has only part silicate mineral and quartz to have floatability preferably, causes two reverse floatation process application limit.Anyway floatation process then is to deviate from carbonate mineral through reverse floatation process, to reduce the MgO content in the concentrate, through direct floatation process exclusive segment silicoide, reaches desired P to guarantee concentrate
2O
5Grade.But floatation process at first is in acid medium, to floatingly select the carbonate gangue mineral anyway, and then ore pulp is transferred to alkaline emersion phosphorus ore thing.Because the pH values of pulp of floating phosphorus direct flotation adjustment agent generally belongs to weak base, the direct flotation that transfers to alkalescence from the reverse flotation of acidity a large amount of alkali that will neutralize causes the beneficiation reagent expense higher; Floating in addition phosphorus direct flotation generally requires mog thinner, is suitable for the flotation of fine fraction phosphorus ore thing, and is relatively poor to coarse fraction phosphorus ore thing sorting.Just because of there is above-mentioned technical problem, restricting two reverse floatation process of collophane and the industrialization of floatation process anyway.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to prior art, and the flotation process of phosphorite of low-grade silico-calcium matter collophane in being suitable for that a kind of technology is more reasonable, sorting is high is provided.
Technical problem to be solved by this invention can realize through following technical scheme.The present invention is a kind of collophane ramified flotation technology, is characterized in, with silico-calcium matter type collophane ore; Make the mineral composition monomer dissociation through broken ore grinding; Adding that water sizes mixing to concentration is 20-40% ore pulp, flows into carbonate gangue mineral floating tank diameter then, and sizes mixing to wherein adding adjustment agent of carbonate gangue mineral floating and flotation collector respectively; Material after sizing mixing gets into the reverse flotation system and carries out carbonate gangue mineral reverse flotation; The gained froth pulp is a carbonate gangue mineral floating mine tailing, discharges and stacks, and product is a concentrate through reverse flotation in the groove; Concentrate through reverse flotation gets into classifying equipoment (like hydrocyclone) and carries out classification, is divided into coarse fraction and fine fraction two parts; Coarse fraction partly gets into desiliconization reverse flotation tank diameter; And size mixing to wherein adding desiliconization adjustment agent and desiliconization collecting agent respectively; Material after sizing mixing gets into the Counterfloatating desiliconization system and carries out siliceous gangue mineral reverse flotation; The gained froth pulp is a desiliconization reverse flotation mine tailing, discharges and stacks, and product is desiliconization concentrate through reverse flotation (coarse-grain coarse ore concentrate) in the groove; Fine fraction partly gets into the direct flotation tank diameter, and to wherein adding direct flotation pH adjustment agent respectively, inhibitor and collecting agent are sized mixing again; Material after sizing mixing gets into the direct flotation system and carries out direct flotation; Product is the direct flotation mine tailing in the groove, discharges and stacks, and the direct flotation froth pulp is direct flotation concentrate (fine concentrate); Merge into final phosphorus concentrate with desiliconization concentrate through reverse flotation (coarse-grain coarse ore concentrate), through concentrating, filter, be drying to obtain finished product phosphorus concentrate.
The ore dressing of low-grade silico-calcium matter type collophane during technology of the present invention is specially adapted to, its raw ore composition is generally: P
2O
5Grade is 10-30%, and MgO content is 1-10%, and A.I (acid non-soluble substance) is 5-40%.Also be applicable to the ore dressing of other grade silico-calcium matter type collophane.
Technical problem to be solved by this invention can also further realized by following technical scheme.Above-described a kind of collophane ramified flotation technology; Be characterized in; The adjustment agent of reverse flotation carbonate gangue mineral is inorganic acid (like sulfuric acid, a phosphoric acid etc.); Its consumption is 5-15 kg/t raw ores, and the collecting agent of reverse flotation carbonate gangue mineral is a fatty acid soaps, and its consumption is 1-3 kg/t raw ores.
Technical problem to be solved by this invention can also further realized by following technical scheme.Above-described a kind of collophane ramified flotation technology is characterized in, the flowage structure of carbonate gangue mineral reverse flotation system is for roughly selecting operation, perhaps is elected to be industry again with foam and forms jointly by roughly selecting.
Technical problem to be solved by this invention can also further realized by following technical scheme.Above-described a kind of collophane ramified flotation technology; Be characterized in; The partition size of carbonate gangue mineral concentrate through reverse flotation classifying equipoment (like hydrocyclone) is between between the 30-50 micron; Wherein coarse fraction part grain graininess is the partition size more than or equal to classifying equipoment, and fine fraction part grain graininess is the partition size that is less than or equal to classifying equipoment.
Technical problem to be solved by this invention can also further realized by following technical scheme.Above-described a kind of collophane ramified flotation technology; Be characterized in that coarse grain Counterfloatating desiliconization adjustment agent is a sodium carbonate, its consumption is 0.5-2 kg/t raw ores; The Counterfloatating desiliconization collecting agent is organic amine collecting agent (like a lauryl amine), and its consumption is 50-500g/t raw ore.
Technical problem to be solved by this invention can also further realized by following technical scheme.Above-described a kind of collophane ramified flotation technology is characterized in, the flowage structure of coarse fraction desiliconization reverse flotation system is for roughly selecting operation, perhaps is elected to be industry again with foam and forms jointly by roughly selecting.
Technical problem to be solved by this invention can also further realized by following technical scheme.Above-described a kind of collophane ramified flotation technology is characterized in, particulate direct flotation pH adjustment agent is a sodium carbonate; Its consumption is 5-15kg/t raw ore, and the direct flotation inhibitor is a waterglass, and its consumption is 1-5kg/t raw ore; The direct flotation collecting agent is a fatty acid soaps, and its consumption is 1-3 kg/t raw ores.
Technical problem to be solved by this invention can also further realized by following technical scheme.Above-described a kind of collophane ramified flotation technology is characterized in, the flowage structure of particulate direct flotation system is for roughly selecting operation, perhaps by roughly select, selected and scan operation and form jointly.
Compared with prior art, though technology of the present invention than the common double reverse floatation process or floatation process is slightly complicated anyway, concerning large-scale phosphorus ore ore dressing plant, its realization does not have difficulty.Technology of the present invention has following three kinds of technical characterictics: (1) effectively promotes final phosphorus concentrate grade; Guaranteed the phosphorus concentrate quality; Technology of the present invention has overcome two reverse floatation process silica removal operation phosphorus concentrate grades and has improved limited shortcoming through the classification ramified flotation, has guaranteed the phosphorus concentrate quality; (2) improved accommodation to raw ore, technology of the present invention adopts the segmentation ramified flotation according to silico-calcium matter Collophanite flotation characteristics, can reduce the selected grade of raw ore, improves the accommodation to raw ore; (3) reduced mog, technology of the present invention has overcome floatation process direct flotation operation anyway to the shortcoming of coarse grain phosphorus ore thing efficiency of separation difference through the classification ramified flotation, can under thicker mog, realize the purpose of phosphorus ore enrichment.Advantages such as technology of the present invention also has efficiency of separation height, and technic index is excellent, and MgO content is lower in the gained phosphorus concentrate, and concentrate quality is high, and final products phosphorus concentrate integrated cost is lower.
The specific embodiment
Further describe concrete implementer's case of the present invention below, but do not constitute restriction with its right.
Embodiment 1, and a kind of collophane ramified flotation technology will consist of: P
2O
5Grade is 10%, and MgO content is 10%, and the A.I acid non-soluble substance is 40% silico-calcium matter type collophane ore; Make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 20% ore pulp, flows into carbonate gangue mineral floating tank diameter then; And size mixing to wherein adding adjustment agent sulfuric acid 15 kg/t raw ores and collecting agent fatty acid soaps 3 kg/t raw ores respectively, the material after sizing mixing gets into the reverse flotation system and carries out carbonate gangue mineral reverse flotation; The flowage structure of reverse flotation system by roughly select with foam be elected to be again the industry form jointly; The gained froth pulp is a carbonate gangue mineral floating mine tailing, discharges and stacks, and product is a concentrate through reverse flotation in the groove; Concentrate through reverse flotation gets into classifying equipoment (like hydrocyclone) and carries out classification, and partition size is 30 microns, is divided into coarse fraction and fine fraction two parts; Coarse fraction partly gets into desiliconization reverse flotation tank diameter; And size mixing to wherein adding desiliconization adjustment agent sodium carbonate 0.5 kg/t raw ore and desiliconization collecting agent lauryl amine 500g/t raw ore respectively, the material after sizing mixing gets into the Counterfloatating desiliconization system and carries out siliceous gangue mineral reverse flotation; The flowage structure of desiliconization reverse flotation system by roughly select with foam be elected to be again the industry form jointly; The gained froth pulp is a desiliconization reverse flotation mine tailing, discharges and stacks, and product is desiliconization concentrate through reverse flotation (coarse-grain coarse ore concentrate) in the groove; Fine fraction partly gets into the direct flotation tank diameter, again to wherein adding direct flotation pH adjustment agent sodium carbonate 15kg/t raw ore, direct flotation inhibitor waterglass 1kg/t raw ore respectively; Direct flotation collecting agent fatty acid soaps 1 kg/t raw ore is sized mixing; Material after sizing mixing gets into the direct flotation system and carries out direct flotation, the flowage structure of direct flotation system by roughly select, selected and scan operation and form jointly, product is the direct flotation mine tailing in the groove; Discharge and stack; The direct flotation froth pulp is direct flotation concentrate (fine concentrate), merges into final phosphorus concentrate with desiliconization concentrate through reverse flotation (coarse-grain coarse ore concentrate), through concentrating, filter, be drying to obtain finished product phosphorus concentrate.
Embodiment 2, and a kind of collophane ramified flotation technology will consist of: P
2O
5Grade is 20%, and MgO content is 5%, and the A.I acid non-soluble substance is 20% silico-calcium matter type collophane ore; Make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 30% ore pulp, flows into carbonate gangue mineral floating tank diameter then; And size mixing to wherein adding adjustment agent sulfuric acid 10 kg/t raw ores and collecting agent fatty acid soaps 2 kg/t raw ores respectively, the material after sizing mixing gets into the reverse flotation system and carries out carbonate gangue mineral reverse flotation; The flowage structure of reverse flotation system by roughly select with foam be elected to be again the industry form jointly; The gained froth pulp is a carbonate gangue mineral floating mine tailing, discharges and stacks, and product is a concentrate through reverse flotation in the groove; Concentrate through reverse flotation gets into classifying equipoment (like hydrocyclone) and carries out classification, and partition size is 40 microns, is divided into coarse fraction and fine fraction two parts; Coarse fraction partly gets into desiliconization reverse flotation tank diameter; And size mixing to wherein adding desiliconization adjustment agent sodium carbonate 1.2 kg/t raw ores and desiliconization collecting agent lauryl amine 200g/t raw ore respectively, the material after sizing mixing gets into the Counterfloatating desiliconization system and carries out siliceous gangue mineral reverse flotation; The flowage structure of desiliconization reverse flotation system by roughly select with foam be elected to be again the industry form jointly; The gained froth pulp is a desiliconization reverse flotation mine tailing, discharges and stacks, and product is desiliconization concentrate through reverse flotation (coarse-grain coarse ore concentrate) in the groove; Fine fraction partly gets into the direct flotation tank diameter, again to wherein adding direct flotation pH adjustment agent sodium carbonate 10kg/t raw ore, direct flotation inhibitor waterglass 2.5kg/t raw ore respectively; Direct flotation collecting agent fatty acid soaps 2 kg/t raw ores are sized mixing; Material after sizing mixing gets into the direct flotation system and carries out direct flotation, the flowage structure of direct flotation system by roughly select, selected and scan operation and form jointly, product is the direct flotation mine tailing in the groove; Discharge and stack; The direct flotation froth pulp is direct flotation concentrate (fine concentrate), merges into final phosphorus concentrate with desiliconization concentrate through reverse flotation (coarse-grain coarse ore concentrate), through concentrating, filter, be drying to obtain finished product phosphorus concentrate.
Embodiment 3, and a kind of collophane ramified flotation technology will consist of: P
2O
5Grade is 30%, and MgO content is 1%, and the A.I acid non-soluble substance is 5% silico-calcium matter type collophane ore; Make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 40% ore pulp, flows into carbonate gangue mineral floating tank diameter then; And size mixing to wherein adding adjustment agent phosphoric acid 5 kg/t raw ores and collecting agent fatty acid soaps 1 kg/t raw ore respectively, the material after sizing mixing gets into the reverse flotation system and carries out carbonate gangue mineral reverse flotation; The flowage structure of reverse flotation system is for roughly selecting operation; The gained froth pulp is a carbonate gangue mineral floating mine tailing, discharges and stacks, and product is a concentrate through reverse flotation in the groove; Concentrate through reverse flotation gets into classifying equipoment (like hydrocyclone) and carries out classification, and partition size is 50 microns, is divided into coarse fraction and fine fraction two parts; Coarse fraction partly gets into desiliconization reverse flotation tank diameter; And size mixing to wherein adding desiliconization adjustment agent sodium carbonate 2 kg/t raw ores and desiliconization collecting agent lauryl amine 50g/t raw ore respectively, the material after sizing mixing gets into the Counterfloatating desiliconization system and carries out siliceous gangue mineral reverse flotation; The flowage structure of desiliconization reverse flotation system is for roughly selecting operation; The gained froth pulp is a desiliconization reverse flotation mine tailing, discharges and stacks, and product is desiliconization concentrate through reverse flotation (coarse-grain coarse ore concentrate) in the groove; Fine fraction partly gets into the direct flotation tank diameter, again to wherein adding direct flotation pH adjustment agent sodium carbonate 5kg/t raw ore, direct flotation inhibitor waterglass 5kg/t raw ore respectively; Direct flotation collecting agent fatty acid soaps 3 kg/t raw ores are sized mixing; Material after sizing mixing gets into the direct flotation system and carries out direct flotation, and the flowage structure of direct flotation system is for roughly selecting operation, and product is the direct flotation mine tailing in the groove; Discharge and stack; The direct flotation froth pulp is direct flotation concentrate (fine concentrate), merges into final phosphorus concentrate with desiliconization concentrate through reverse flotation (coarse-grain coarse ore concentrate), through concentrating, filter, be drying to obtain finished product phosphorus concentrate.
Embodiment 4, for low-grade silicon calcium quality phosphorus block rock sample in certain, raw ore P
2O
5Grade is 24.63%, and MgO content is 4.28%, and mog is 200 orders 75%, and floatation concentration is 30%; Reverse flotation adds phosphoric acid 6.0kg/t, collecting agent fatty acid soaps 2.0 kg/t, and reverse flotation flowsheet selects flow process to constitute for roughly selecting with foam again; The concentrate through reverse flotation partition size is 38 microns, and coarse fraction partly adds sodium carbonate 1.5 kg/t, lauryl amine 120g/t; The desiliconization flow process is merely roughly selects operation, and fine fraction partly adds sodium carbonate 8kg/t, waterglass 2kg/t; Fatty acid soaps 1.5 kg/t, the direct flotation flow process is one thick one smart flow process, can obtain P after sorting
2O
5Grade is 32.15%, and MgO is 0.68% high-quality phosphorus concentrate, P
2O
5The rate of recovery is 83.26%.
Claims (6)
1. collophane ramified flotation technology is characterized in that its step is following:
With silico-calcium matter type collophane ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to mass concentration is 20-40% ore pulp; Flow into carbonate gangue mineral floating tank diameter then; And size mixing with flotation collector to wherein adding carbonate gangue mineral floating adjustment agent respectively, the material entering reverse flotation system after sizing mixing carries out carbonate gangue mineral reverse flotation, and the gained froth pulp is a carbonate gangue mineral floating mine tailing; Discharge and stack, product is a concentrate through reverse flotation in the groove; Concentrate through reverse flotation gets into classifying equipoment and carries out classification, is divided into coarse fraction and fine fraction two parts; Coarse fraction partly gets into desiliconization reverse flotation tank diameter; And size mixing to wherein adding desiliconization adjustment agent and desiliconization collecting agent respectively; Material after sizing mixing gets into the Counterfloatating desiliconization system and carries out siliceous gangue mineral reverse flotation; The gained froth pulp is a desiliconization reverse flotation mine tailing, discharges and stacks, and product is the desiliconization concentrate through reverse flotation in the groove; Fine fraction partly gets into the direct flotation tank diameter, and to wherein adding direct flotation pH adjustment agent respectively, inhibitor and collecting agent are sized mixing again; Material after sizing mixing gets into the direct flotation system and carries out direct flotation; Product is the direct flotation mine tailing in the groove, discharges and stacks, and the direct flotation froth pulp is the direct flotation concentrate; Merge into final phosphorus concentrate with the desiliconization concentrate through reverse flotation, through concentrating, filter, be drying to obtain finished product phosphorus concentrate;
The adjustment agent of described reverse flotation carbonate gangue mineral is an inorganic acid, and its consumption is 5-15 kg/t raw ores, and the collecting agent of reverse flotation carbonate gangue mineral is a fatty acid soaps, and its consumption is 1-3 kg/t raw ores; Coarse grain Counterfloatating desiliconization adjustment agent is a sodium carbonate, and its consumption is 0.5-2 kg/t raw ores, and the Counterfloatating desiliconization collecting agent is the organic amine collecting agent, and its consumption is 50-500g/t raw ore;
Particulate direct flotation pH adjustment agent is a sodium carbonate, and its consumption is 5-15kg/t raw ore, and the direct flotation inhibitor is a waterglass, and its consumption is 1-5kg/t raw ore, and the direct flotation collecting agent is a fatty acid soaps, and its consumption is 1-3 kg/t raw ores;
The partition size of classifying equipoment is between between the 30-50 micron, and wherein coarse fraction part grain graininess is the partition size more than or equal to classifying equipoment, and fine fraction part grain graininess is the partition size that is less than or equal to classifying equipoment.
2. collophane ramified flotation technology according to claim 1 is characterized in that: the consisting of of described silico-calcium matter type collophane ore: P
2O
5Grade is 10-30%, and the MgO mass content is 1-10%, and the A.I acid non-soluble substance is 5-40%.
3. collophane ramified flotation technology according to claim 1 is characterized in that: described inorganic acid is sulfuric acid, phosphoric acid or the mixed acid of the two.
4. collophane ramified flotation technology according to claim 1 is characterized in that: the flowage structure of carbonate gangue mineral reverse flotation system is for roughly selecting operation, perhaps is elected to be industry again with foam and forms jointly by roughly selecting.
5. collophane ramified flotation technology according to claim 1 is characterized in that: the flowage structure of coarse fraction desiliconization reverse flotation system is for roughly selecting operation, perhaps is elected to be industry again with foam and forms jointly by roughly selecting.
6. collophane ramified flotation technology according to claim 1 is characterized in that: the flowage structure of particulate direct flotation system is for roughly selecting operation, perhaps by roughly select, selected and scan operation and form jointly.
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| CN104923368A (en) * | 2015-06-10 | 2015-09-23 | 中蓝连海设计研究院 | Ore grinding and beneficiation process for siliceous phosphorite |
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| CN105750089A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Magnesian collophanite separation method |
| CN106269265A (en) * | 2016-08-18 | 2017-01-04 | 中蓝连海设计研究院 | A kind of classification stepped-flotation separation technique processing high alumina high ferro silicon calcium collophanite |
| CN106423536A (en) * | 2016-12-21 | 2017-02-22 | 中蓝连海设计研究院 | Substep ore grinding reverse-reverse direct flotation process for treating silico-calcium collophanite |
| 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 |
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| CN111229393A (en) * | 2020-01-16 | 2020-06-05 | 辽宁科技大学 | Magnesite beneficiation process with short flow and over-grinding prevention |
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