CN102744153A - Flotation process for phosphorus ore of calcium silicon phosphorus rock - Google Patents
Flotation process for phosphorus ore of calcium silicon phosphorus rock Download PDFInfo
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- CN102744153A CN102744153A CN2012102474605A CN201210247460A CN102744153A CN 102744153 A CN102744153 A CN 102744153A CN 2012102474605 A CN2012102474605 A CN 2012102474605A CN 201210247460 A CN201210247460 A CN 201210247460A CN 102744153 A CN102744153 A CN 102744153A
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Abstract
The invention discloses a flotation process for phosphorus ore of calcium silicon phosphorus rock. The flotation process includes: crushing raw minerals, grinding the crushed raw minerals into suitable fineness by a wet process, adding regulating agent and collecting agent in the grinded raw minerals, performing positive flotation, mixedly performing flotation to obtain phosphorus ore and carbonate mineral with good floatability, removing silicate mineral which is easy to remove and the carbonate mineral, sludge and other minerals which are weak in floatability; subjecting foam products obtained via flotation to reverse flotation with carbonate, adding the regulating agent and carbonate mineral collecting agent to obtain the carbonate mineral via flotation; subjecting flotation cell products to desliming, adding silicate collecting agent, performing reverse silicate flotation, and further removing impurities such as silicon, iron and aluminum. The flotation process can be used for the flotation for middle and high quality phosphorus ore of the calcium silicon phosphorus rock, and in the fine phosphorus ores obtained via the flotation process, grade of P2O5 is higher than 36%, MgO content is less than 0.5%, total content of Fe2O3 and Al2O3 is less than 1.8%, SiO2 content is less than 5.5%, and quality can reach the standard for high-quality ore concentrate. The flotation process for the phosphorus ore of the calcium silicon phosphorus rock is reasonable in design, strong in operability, and fine in quality of obtained product.
Description
Technical field
The present invention relates to a kind of ore-dressing technique, particularly a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite.
Background technology
The phosphorus ore thing is a kind of important chemical raw mineral materials, and along with The development in society and economy, the demand of phosphorus ore thing is in continuous increase, and along with the minimizing of high-grade abundant ore source, and the demand of high-grade phosphorus concentrate product is just seemed more urgent.High-grade phosphorus concentrate is compared with the phosphorus concentrate of conventional quality, not only reduces carriage load, improves conevying efficiency, reduces ton P
2O
5The actual shipment cost, but also can significantly improve the following process economic benefit of enterprises.Like the manufacturing enterprise of phosphoric acid by wet process, always hope to improve the grade of phosphorus ore in process of production.Phosphorus concentrate P
2O
5Low more, production unit quality P
2O
5Economic benefit lower, mainly show the volumetric efficiency of reactive tank, the reduction of filter production intensity, the rising of the power of equipment, the index of consumption finally causes this output of a factory to reduce.
In phosphoric acid production, the phosphorus ore grade is again the key factor that influences manufacturing condition.When the phosphoric acid concentration of producing was constant, the grade of phosphorus ore was low more, calculated by material balance to allow the washing water yield of adding filtration system few more, and the washing degree of filter residue will be affected, and causes P
2O
5Be clipped in the gypsum and lose, just must adjust phosphoric acid concentration, cause the fluctuation of process conditions control, in addition, in phosphoric acid by wet process and phosphate industry, the MgO of phosphorus concentrate, Fe
2O
3, Al
2O
3, SiO
2Generally all can increase consumption, the reduction product quality of acid and increase product cost Deng impurity, process units production capacity is descended, the corrosion of equipment and materials or abrasion aggravation, reduction equipment driving rate; To Phosphate Fertilizer Production enterprise, to MgO, the Fe of phosphorus concentrate
2O
3, Al
2O
3, SiO
2Higher Deng the impurity content requirement, the phosphorus concentrate of conventional quality can't satisfy technological requirement.What reserves were maximum in world's phosphate rock resource is the phosphorite ore, accounts for more than 70% of gross reserves, and the silicon calcium quality phosphorus block rock ratio is maximum in the phosphorite ore.Silicon calcium quality phosphorus block rock rock phosphate in powder its valuable mineral usually is a collophane; Gangue mineral is carbonate mineral, quartz, calcedony, aluminosilicate mineral, bloodstone and limonite etc., and the silicon calcium quality phosphorus block rock rock phosphate in powder will obtain commercial Application, must carry out beneficiation enrichment earlier; Common enrichment method is a floatation; Floatation is divided into positive reverse flotation, flotation, two reverse flotations etc. anyway again, and the whole bag of tricks all can be met the phosphorus concentrate of conventional quality requirement, the i.e. P of concentrate
2O
5Grade reaches 30-33%, impurity SiO
2Content is greater than 6% phosphorus concentrate, but will obtain P
2O
5Grade is greater than 36%, SiO
2Content is all difficult less than 5.5% high-grade phosphorus concentrate.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to prior art, provide a kind of technology rationally, the positive and negative reverse floatation process of the silicon calcium quality phosphorus block rock rock phosphate in powder production high-grade phosphorus concentrate of adaptability and strong operability.
Technical problem to be solved by this invention is to realize through following technical scheme.The present invention is a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite, is characterized in, its step is following:
(1) mix direct flotation: with crushing raw ore, wet milling to fineness accounts for 92-99% for-200 purpose mass content, and the ore grinding mass concentration is 45-75%, adding direct flotation medicament, and adding that water sizes mixing to mass concentration is the ore pulp of 25-35% again; The direct flotation medicament is sodium carbonate, waterglass and aliphatic acid, and the consumption of sodium carbonate is 0.1-8 kilogram/ton
.Raw ore, the consumption of waterglass are 4-12 kilogram/ton
.Raw ore, the consumption of aliphatic acid are 0.5-5 kilogram/ton
.Raw ore;
Ore pulp after sizing mixing is dropped into floatation system, under 15-35 ℃, carry out direct flotation; Direct flotation is roughly selected earlier, roughly select froth pulp carry out 1-2 time selected, in the initial separatory cell in product and the cleaner cell product merge into comprehensive mine tailing I;
(2) carbonate reverse flotation: the froth pulp of the selected emersion of direct flotation is carried out the carbonate reverse flotation under 15-35 ℃; Reverse flotation adds adjustment agent and collecting agent; The reverse flotation froth pulp carries out carbonate and selects, and it is mine tailing II that carbonate selects froth pulp again; Described adjustment agent is the nitration mixture of inorganic acid, nitration mixture consumption 2-15 kilogram/ton
.Raw ore, collecting agent are the carbonate collecting agent in reverse floatation, and the consumption of collecting agent is 0.1-1.5 kilogram/ton
.Raw ore;
(3) silicate reverse flotation: product in the carbonate reverse flotation groove is carried out desliming; Coarse grain product after the desliming adds the silicate collecting agent and carries out the silicate reverse flotation; Flotation temperature is 15-35 ℃, and the reverse flotation froth pulp carries out silicate again and selects, and selecting froth pulp again is mine tailing III; The silicate collecting agent in reverse floatation is a lauryl amine, and its consumption is 0.02-0.15 kilogram/ton
.Raw ore; The carbonate reverse flotation selects the interior product of fine fraction product, silicate reverse flotation groove, the silicate reverse flotation of product, desliming operation in the groove to select the interior product of groove to merge into comprehensive concentrate more again.
In the silicon calcium quality phosphorus block rock flotation process of phosphorite of the present invention, further optimized technical scheme or technical characterictic are:
1, in the step (1), direct flotation roughly select froth pulp carry out 2 times selected, the 1st 0.5-3 of sodium carbonate amount when selected kilogram/ton
.Raw ore, waterglass are 1-5 kilogram/ton
.Raw ore; The 2nd 0.5-3 of sodium carbonate amount when selected kilogram/ton
.Raw ore, waterglass are 1-5 kilogram/ton
.Raw ore.
2, flotation time is respectively: the selections of top-uping are 9-20 minute, and carbonate reverse flotation section is 6-12 minute, and silicate reverse flotation section is 5-10 minute.Further be preferably: the flotation time of the selections of top-uping is 12-15 minute; Carbonate reverse flotation section is 6-10 minute, and silicate reverse flotation section is 6-9 minute.
The consumption of medicament sodium carbonate was 1-3 kilogram/ton when 3, direct flotation was selected
.Raw ore, the consumption of waterglass are 1-3 kilogram/ton
.Raw ore; The nitration mixture consumption is 4-10 kilogram/ton during the carbonate reverse flotation
.Raw ore, collector dosage are 0.1-0.7 kilogram/ton
.Raw ore; Silicate reverse flotation lauryl amine consumption is 0.03-0.10 kilogram/ton
.Raw ore.
In a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite of the present invention: mix direct flotation and floatingly select phosphorus ore thing and the good carbonate mineral of floatability, get rid of the silicoide that is prone to eliminating, carbonate mineral, shale and other mineral of floatability difference; Froth pulp to emersion carries out the carbonate reverse flotation again, the flotation carbonate mineral; At last the flotation cell product is carried out desliming, carry out the silicate reverse flotation again, further discharge impure minerals such as silicon, iron, aluminium; It is a kind of positive and negative reverse floatation process.
Adjustment agent described in the processing step of the present invention (2) is the nitration mixture of inorganic acid; Can use nitration mixture for disclosed any carbonate reverse flotation in the prior art; Like the nitration mixture of sulfuric acid and phosphoric acid, weight ratio can be 1:1,1:2,2:1 or the like, and occurrence is confirmed as required.Described collecting agent can be disclosed any carbonate collecting agent in reverse floatation in the prior art.
Technology of the present invention can be used for sorting high-grade silicon calcium quality phosphorus block rock rock phosphate in powder.Technology of the present invention has overcome the final phosphorus concentrate of prior art floatation process P
2O
5Grade can only reach 30-33%, impurity content problem of higher.Detect technology flotation gained phosphorus concentrate P of the present invention through experiment
2O
5Grade is greater than 36%, and MgO content is less than 0.50%, Fe
2O
3+ Al
2O
3Content is less than 1.80%, SiO
2Content is less than 5.5%, the superior matter concentrate of concentrate quality standard.Compared with prior art, technological design of the present invention is reasonable, and is workable, and the flotation products obtained therefrom is good.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
The specific embodiment
Following with reference to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite, its step is following:
(1) tcrude ore is broken, wet milling to-200 order content account for 92%, and ore milling concentration is 53%, add floating agent, add water again and size mixing to 29% pulp density; Described floating agent is sodium carbonate, waterglass and aliphatic acid, and sodium carbonate amount is 4 kilograms/ton
.Raw ore, the consumption of waterglass are 6 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 3.8 kilograms/ton
.Raw ore;
(2) ore pulp after will sizing mixing drops into floatation system; Under 20 ℃, carry out direct flotation as follows earlier: direct flotation is roughly selected earlier, roughly select froth pulp carry out 2 times selected, product is merged into comprehensive mine tailing I in product in product in the initial separatory cell, the 1st cleaner cell, the 2nd cleaner cell; The 2nd time selected froth pulp carries out the carbonate reverse flotation; Carbonate reverse flotation foam carries out carbonate again and selects, and it is mine tailing II that carbonate selects froth pulp again, and product carries out desliming in the carbonate reverse flotation initial separatory cell; Coarse grain product after the desliming carries out silicate and roughly selects; Roughly select froth pulp and carry out silicate again and select, selecting froth pulp again is mine tailing III, and the carbonate reverse flotation selects in the fine fraction product, silicate reverse flotation groove of product, desliming operation in the groove product, silicate reverse flotation to select in the groove product to merge into comprehensive concentrate more again;
Sodium carbonate amount was 2.5 kilograms/ton when direct flotation the 1st, 2 times was selected
.Raw ore, waterglass are 2.0 kilograms/ton
.Raw ore.Carbonate reverse flotation adjustment agent is the nitration mixture of inorganic acid, and collecting agent is the carbonate collecting agent in reverse floatation.6 kilograms/ton of nitration mixture consumptions
.Raw ore, collector dosage are 0.4 kilogram/ton
.Raw ore, silicate collecting agent in reverse floatation are lauryl amine, and consumption is 0.06 kilogram/ton
.Raw ore.
Embodiment 2, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite, its step is following:
(1) tcrude ore is broken, wet milling to-200 order content account for 95%, and ore milling concentration is 50%, add floating agent, add water again and size mixing to 27% pulp density; Described floating agent is sodium carbonate, waterglass and aliphatic acid, and sodium carbonate amount is 3.5 kilograms/ton
.Raw ore, the consumption of waterglass are 6.5 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 3.0 kilograms/ton
.Raw ore;
(2) ore pulp after will sizing mixing drops into floatation system; Under 25 ℃, carry out direct flotation as follows earlier: direct flotation is roughly selected earlier, roughly select froth pulp carry out 2 times selected, product is merged into comprehensive mine tailing I in product in product in the initial separatory cell, the 1st cleaner cell, the 2nd cleaner cell; The 2nd time selected froth pulp carries out the carbonate reverse flotation; Carbonate reverse flotation foam carries out carbonate again and selects, and it is mine tailing II that carbonate selects froth pulp again, and product carries out desliming in the carbonate reverse flotation initial separatory cell; Coarse grain product after the desliming carries out silicate and roughly selects; Roughly select froth pulp and carry out silicate again and select, selecting froth pulp again is mine tailing III, and the carbonate reverse flotation selects in the fine fraction product, silicate reverse flotation groove of product, desliming operation in the groove product, silicate reverse flotation to select in the groove product to merge into comprehensive concentrate more again.
Sodium carbonate amount was 2.0 kilograms/ton when direct flotation was selected
.Raw ore, waterglass are 2.0 kilograms/ton
.Raw ore.Carbonate reverse flotation adjustment agent is the nitration mixture of inorganic acid, and collecting agent is the carbonate collecting agent in reverse floatation.8 kilograms/ton of nitration mixture consumptions
.Raw ore, collector dosage are 0.3 kilogram/ton
.Raw ore, silicate collecting agent in reverse floatation are lauryl amine, and consumption is 0.10 kilogram/ton
.Raw ore.
Embodiment 3, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite, its step is following:
(1) tcrude ore is broken, wet milling to-200 order content account for 97%, and ore milling concentration is 75%, add floating agent, add water again and size mixing to 25% pulp density; Described floating agent is sodium carbonate, waterglass and aliphatic acid, and sodium carbonate amount is 4 kilograms/ton
.Raw ore, the consumption of waterglass are 7 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 2.5 kilograms/ton
.Raw ore;
(2) ore pulp after will sizing mixing drops into floatation system; Under 30 ℃, carry out direct flotation as follows earlier: direct flotation is roughly selected earlier, roughly select froth pulp carry out 2 times selected, product is merged into comprehensive mine tailing I in product in product in the initial separatory cell, the 1st cleaner cell, the 2nd cleaner cell; The 2nd time selected froth pulp carries out the carbonate reverse flotation; Carbonate reverse flotation foam carries out carbonate again and selects, and it is mine tailing II that carbonate selects froth pulp again, and product carries out desliming in the carbonate reverse flotation initial separatory cell; Coarse grain product after the desliming carries out silicate and roughly selects; Roughly select froth pulp and carry out silicate again and select, selecting froth pulp again is mine tailing III, and the carbonate reverse flotation selects in the fine fraction product, silicate reverse flotation groove of product, desliming operation in the groove product, silicate reverse flotation to select in the groove product to merge into comprehensive concentrate more again.
Sodium carbonate amount was 1.5 kilograms/ton when direct flotation was selected
.Raw ore, waterglass are 2.5 kilograms/ton
.Raw ore.Carbonate reverse flotation adjustment agent is the nitration mixture of inorganic acid, and collecting agent is the carbonate collecting agent in reverse floatation.7 kilograms/ton of nitration mixture consumptions
.Raw ore, collector dosage are 0.25 kilogram/ton
.Raw ore, silicate collecting agent in reverse floatation are lauryl amine, and its consumption is 0.07 kilogram/ton
.Raw ore.
Embodiment 4, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite, its step is following:
(1) tcrude ore is broken, wet milling to-200 order content account for 99%, and ore milling concentration is 45%, add floating agent, add water again and size mixing to 35% pulp density; Described floating agent is sodium carbonate, waterglass and aliphatic acid, and sodium carbonate amount is 3 kilograms/ton
.Raw ore, the consumption of waterglass are 8 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 2.5 kilograms/ton
.Raw ore;
(2) ore pulp after will sizing mixing drops into floatation system; Under 35 ℃, carry out direct flotation as follows earlier: direct flotation is roughly selected earlier, roughly select froth pulp carry out 2 times selected, product is merged into comprehensive mine tailing I in product in product in the initial separatory cell, the 1st cleaner cell, the 2nd cleaner cell; The 2nd time selected froth pulp carries out the carbonate reverse flotation; Carbonate reverse flotation foam carries out carbonate again and selects, and it is mine tailing II that carbonate selects froth pulp again, and product carries out desliming in the carbonate reverse flotation initial separatory cell; Coarse grain product after the desliming carries out silicate and roughly selects; Roughly select froth pulp and carry out silicate again and select, selecting froth pulp again is mine tailing III, and the carbonate reverse flotation selects in the fine fraction product, silicate reverse flotation groove of product, desliming operation in the groove product, silicate reverse flotation to select in the groove product to merge into comprehensive concentrate more again.
3 kilograms/ton of the 1st, 2 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 3 kilograms/ton
.Raw ore.Carbonate reverse flotation adjustment agent is the nitration mixture of inorganic acid, and collecting agent is the carbonate collecting agent in reverse floatation.2 kilograms/ton of nitration mixture consumptions
.Raw ore, collector dosage are 0.2 kilogram/ton
.Raw ore, silicate collecting agent in reverse floatation are lauryl amine, and its consumption is 0.02 kilogram/ton
.Raw ore.
Embodiment 5, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite, its step is following:
(1) mix direct flotation: with crushing raw ore, wet milling to fineness accounts for 96% for-200 purpose mass content, and the ore grinding mass concentration is 65%, adding direct flotation medicament, and adding that water sizes mixing to mass concentration is 30% ore pulp again; The direct flotation medicament is sodium carbonate, waterglass and aliphatic acid, and the consumption of sodium carbonate is 0.1 kilogram/ton
.Raw ore, the consumption of waterglass are 4 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 0.5 kilogram/ton
.Raw ore;
Ore pulp after sizing mixing is dropped into floatation system, under 15 ℃, carry out direct flotation; Direct flotation is roughly selected earlier, roughly select froth pulp carry out 1 time selected, in the initial separatory cell in product and the cleaner cell product merge into comprehensive mine tailing I;
(2) carbonate reverse flotation: the froth pulp of the selected emersion of direct flotation is carried out the carbonate reverse flotation under 15 ℃; Reverse flotation adds adjustment agent and collecting agent; The reverse flotation froth pulp carries out carbonate and selects, and it is mine tailing II that carbonate selects froth pulp again; Described adjustment agent is the nitration mixture of inorganic acid, 2 kilograms/ton of nitration mixture consumptions
.Raw ore, collecting agent are the carbonate collecting agent in reverse floatation, and the consumption of collecting agent is 0.1 kilogram/ton
.Raw ore;
(3) silicate reverse flotation: product in the carbonate reverse flotation groove is carried out desliming; Coarse grain product after the desliming adds the silicate collecting agent and carries out the silicate reverse flotation; Flotation temperature is 15 ℃, and the reverse flotation froth pulp carries out silicate again and selects, and selecting froth pulp again is mine tailing III; The silicate collecting agent in reverse floatation is a lauryl amine, and its consumption is 0.02 kilogram/ton
.Raw ore; The carbonate reverse flotation selects the interior product of fine fraction product, silicate reverse flotation groove, the silicate reverse flotation of product, desliming operation in the groove to select the interior product of groove to merge into comprehensive concentrate more again.
Direct flotation is roughly selected froth pulp and is carried out when selected 0.5 kilogram/ton of sodium carbonate amount
.Raw ore, waterglass are 1 kilogram/ton
.Raw ore; The selections of top-uping are 9 minutes, and carbonate reverse flotation section is 6 minutes, and silicate reverse flotation section is 5 minutes.
Embodiment 6, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite, its step is following:
(1) mix direct flotation: with crushing raw ore, wet milling to fineness accounts for 99% for-200 purpose mass content, and the ore grinding mass concentration is 75%, adding direct flotation medicament, and adding that water sizes mixing to mass concentration is 35% ore pulp again; The direct flotation medicament is sodium carbonate, waterglass and aliphatic acid, and the consumption of sodium carbonate is 8 kilograms/ton
.Raw ore, the consumption of waterglass are 12 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 5 kilograms/ton
.Raw ore;
Ore pulp after sizing mixing is dropped into floatation system, under 35 ℃, carry out direct flotation; Direct flotation is roughly selected earlier, roughly select froth pulp carry out 2 times selected, in the initial separatory cell in product and the cleaner cell product merge into comprehensive mine tailing I;
(2) carbonate reverse flotation: the froth pulp of the selected emersion of direct flotation is carried out the carbonate reverse flotation under 35 ℃; Reverse flotation adds adjustment agent and collecting agent; The reverse flotation froth pulp carries out carbonate and selects, and it is mine tailing II that carbonate selects froth pulp again; Described adjustment agent is the nitration mixture of inorganic acid, 15 kilograms/ton of nitration mixture consumptions
.Raw ore, collecting agent are the carbonate collecting agent in reverse floatation, and the consumption of collecting agent is 1.5 kilograms/ton
.Raw ore;
(3) silicate reverse flotation: product in the carbonate reverse flotation groove is carried out desliming; Coarse grain product after the desliming adds the silicate collecting agent and carries out the silicate reverse flotation; Flotation temperature is 35 ℃, and the reverse flotation froth pulp carries out silicate again and selects, and selecting froth pulp again is mine tailing III; The silicate collecting agent in reverse floatation is a lauryl amine, and its consumption is 0.15 kilogram/ton
.Raw ore; The carbonate reverse flotation selects the interior product of fine fraction product, silicate reverse flotation groove, the silicate reverse flotation of product, desliming operation in the groove to select the interior product of groove to merge into comprehensive concentrate more again.
Direct flotation roughly select froth pulp carry out 2 times selected, 3 kilograms/ton of the 1st sodium carbonate amounts when selected
.Raw ore, waterglass are 5 kilograms/ton
.Raw ore; 0.5 kilogram/ton of the 2nd sodium carbonate amount when selected
.Raw ore, waterglass are 5 kilograms/ton
.Raw ore.
Flotation time is respectively: the flotation time of the selections of top-uping is 15 minutes; Carbonate reverse flotation section is 7 minutes, and silicate reverse flotation section is 9 minutes.
Embodiment 7, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite experiment one, its step is following:
(1) tcrude ore is broken, wet milling to-200 order content account for 92.5%, and ore milling concentration is 55%, add floating agent, add water again and size mixing to 29% pulp density; Described floating agent is sodium carbonate waterglass and aliphatic acid, and sodium carbonate amount is 3 kilograms/ton
.The consumption of raw ore waterglass is 7 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 4.0 kilograms/ton
.Raw ore; Raw ore P is learnt in detection
2O
5Grade 30.91%, MgO content 1.10%, Fe
2O
3+ Al
2O
3Content 3.12%, SiO
2Content 14.08%;
(2) ore pulp after will sizing mixing drops into floatation system; Under 18 ℃, carry out direct flotation as follows earlier: direct flotation is roughly selected earlier, roughly select froth pulp carry out 2 times selected, product is merged into comprehensive mine tailing I in product in product in the initial separatory cell, the 1st cleaner cell, the 2nd cleaner cell; The 2nd time selected froth pulp carries out the carbonate reverse flotation; Carbonate reverse flotation foam carries out carbonate again and selects, and it is mine tailing II that carbonate selects froth pulp again, and product carries out desliming in the carbonate reverse flotation initial separatory cell; Coarse grain product after the desliming carries out silicate and roughly selects; Roughly select froth pulp and carry out silicate again and select, selecting froth pulp again is mine tailing III, and the carbonate reverse flotation selects in the fine fraction product, silicate reverse flotation groove of product, desliming operation in the groove product, silicate reverse flotation to select in the groove product to merge into comprehensive concentrate more again.
2.0 kilograms/ton of 1 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 2.0 kilograms/ton
.Raw ore.1.0 kilograms/ton of 2 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 1.5 kilograms/ton
.Raw ore.Carbonate reverse flotation adjustment agent is the nitration mixture of inorganic acid, and collecting agent is the carbonate collecting agent in reverse floatation.6 kilograms/ton of nitration mixture consumptions
.Raw ore, collector dosage are 0.4 kilogram/ton
.Raw ore, silicate collecting agent in reverse floatation are 12 amine.Consumption is 0.060 kilogram/ton
.Raw ore.
Testing result shows: can obtain comprehensive concentrate yield 69.27%, P through flotation
2O
5Grade 36.34%, MgO content 0.31%, Fe
2O
3+ Al
2O
3Content 1.44%, SiO
2Content 5.12%, P
2O
5The open-circuit test result of the rate of recovery 81.23%.
Embodiment 8, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite experiment two, its step is following:
(1) tcrude ore is broken, wet milling to-200 order content account for 93.14%, and ore milling concentration is 51%, add floating agent, add water again and size mixing to 27% pulp density; Described floating agent is sodium carbonate, waterglass and aliphatic acid, and sodium carbonate amount is 3.0 kilograms/ton
.Raw ore, the consumption of waterglass are 7.0 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 3.0 kilograms/ton
.Raw ore; Raw ore P is learnt in detection
2O
5Grade 32.01%, MgO content 0.84%, Fe
2O
3+ Al
2O
3Content 3.09%, SiO
2Content 11.10%;
(2) ore pulp after will sizing mixing drops into floatation system, under 23 ℃, carries out direct flotation as follows earlier, and direct flotation is roughly selected earlier; Roughly select froth pulp carry out 2 times selected; Product, the 1st the interior product of cleaner cell, the 2nd the interior product of cleaner cell are merged into comprehensive mine tailing I in the initial separatory cell, and the 2nd time selected froth pulp carries out the carbonate reverse flotation, and carbonate reverse flotation foam carries out carbonate again and selects; It is mine tailing II that carbonate selects froth pulp again; Product carries out desliming in the carbonate reverse flotation initial separatory cell, and the coarse grain product after the desliming carries out silicate to be roughly selected, and roughly selects froth pulp and carries out silicate again and select; Selecting froth pulp again is mine tailing III, and the carbonate reverse flotation selects the interior product of fine fraction product, silicate reverse flotation groove, the silicate reverse flotation of product, desliming operation in the groove to select the interior product of groove to merge into comprehensive concentrate more again.
2.0 kilograms/ton of 1 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 2.5 kilograms/ton
.Raw ore.2.0 kilograms/ton of 2 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 1.5 kilograms/ton
.Raw ore.Carbonate reverse flotation adjustment agent is the nitration mixture of inorganic acid, and collecting agent is the carbonate collecting agent in reverse floatation.6 kilograms/ton of nitration mixture consumptions
.Raw ore, collector dosage are 0.4 kilogram/ton
.Raw ore, silicate collecting agent in reverse floatation are 12 amine.Consumption is 0.06 kilogram/ton
.Raw ore.
Testing result shows: can obtain comprehensive concentrate yield 75.32%, P through flotation
2O
5Grade 36.40%, MgO content 0.15%, Fe
2O
3+ Al
2O
3Content 1.50%, SiO
2Content 5.32%, P
2O
5The open-circuit test result of the rate of recovery 85.22%.
Embodiment 9, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite experiment three, its step is following:
(1) tcrude ore is broken, wet milling to-200 order content account for 94.32%, and ore milling concentration is 49%, add floating agent, add water again and size mixing to 26% pulp density; Described floating agent is sodium carbonate, waterglass and aliphatic acid, and sodium carbonate amount is 3 kilograms/ton
.The consumption of raw ore waterglass is 7 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 2.5 kilograms/ton
.Raw ore; Raw ore P is learnt in detection
2O
5Grade 29.46%, MgO content 1.07%, Fe
2O
3+ Al
2O
3Content 3.38%, SiO
2Content 14.10%;
(2) ore pulp after will sizing mixing drops into floatation system; Under 28 ℃, carry out direct flotation as follows earlier: direct flotation is roughly selected earlier, roughly select froth pulp carry out 2 times selected, product is merged into comprehensive mine tailing I in product in product in the initial separatory cell, the 1st cleaner cell, the 2nd cleaner cell; The 2nd time selected froth pulp carries out the carbonate reverse flotation; Carbonate reverse flotation foam carries out carbonate again and selects, and it is mine tailing II that carbonate selects froth pulp again, and product carries out desliming in the carbonate reverse flotation initial separatory cell; Coarse grain product after the desliming carries out silicate and roughly selects; Roughly select froth pulp and carry out silicate again and select, selecting froth pulp again is mine tailing III, and the carbonate reverse flotation selects in the fine fraction product, silicate reverse flotation groove of product, desliming operation in the groove product, silicate reverse flotation to select in the groove product to merge into comprehensive concentrate more again.
1.0 kilograms/ton of 1 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 2.5 kilograms/ton
.Raw ore.1.0 kilograms/ton of 2 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 1.5 kilograms/ton
.Raw ore.Carbonate reverse flotation adjustment agent is the nitration mixture of inorganic acid, and collecting agent is the carbonate collecting agent in reverse floatation.7 kilograms/ton of nitration mixture consumptions
.Raw ore, collector dosage are 0.30 kilogram/ton
.Raw ore, silicate collecting agent in reverse floatation are 12 amine.Consumption is 0.075 kilogram/ton
.Raw ore.
Testing result shows: can obtain comprehensive concentrate yield 65.66%, P through flotation
2O
5Grade 36.14%, MgO content 0.30%, Fe
2O
3+ Al
2O
3Content 1.60%, SiO
2Content 5.20%, P
2O
5The open-circuit test result of the rate of recovery 80.11%.
Embodiment 10, with reference to Fig. 1, and a kind of silicon calcium quality phosphorus block rock flotation process of phosphorite experiment four, its step is following:
(1) tcrude ore is broken, wet milling to-200 order content account for 95.23%, and ore milling concentration is 47%, add floating agent, add water again and size mixing to 30% pulp density; Described floating agent is sodium carbonate, waterglass and aliphatic acid, and sodium carbonate amount is 3 kilograms/ton
.The consumption of raw ore waterglass is 7 kilograms/ton
.Raw ore, the consumption of aliphatic acid are 2.5 kilograms/ton
.Raw ore; Raw ore P is learnt in detection
2O
5Grade 27.83%, MgO content 1.55%, Fe
2O
3+ Al
2O
3Content 3.52%, SiO
2Content 16.08%;
(2) ore pulp after will sizing mixing drops into floatation system; Under 31 ℃, carry out direct flotation as follows earlier: direct flotation is roughly selected earlier, roughly select froth pulp carry out 2 times selected, product is merged into comprehensive mine tailing I in product in product in the initial separatory cell, the 1st cleaner cell, the 2nd cleaner cell; The 2nd time selected froth pulp carries out the carbonate reverse flotation; Carbonate reverse flotation foam carries out carbonate again and selects, and it is mine tailing II that carbonate selects froth pulp again, and product carries out desliming in the carbonate reverse flotation initial separatory cell; Coarse grain product after the desliming carries out silicate and roughly selects; Roughly select froth pulp and carry out silicate again and select, selecting froth pulp again is mine tailing III, and the carbonate reverse flotation selects in the fine fraction product, silicate reverse flotation groove of product, desliming operation in the groove product, silicate reverse flotation to select in the groove product to merge into comprehensive concentrate more again.
1.5 kilograms/ton of 1 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 2.5 kilograms/ton
.Raw ore.1.5 kilograms/ton of 2 selected sodium carbonate amounts of direct flotation
.Raw ore, waterglass are 1.5 kilograms/ton
.Raw ore.Carbonate reverse flotation adjustment agent is the nitration mixture of inorganic acid, and collecting agent is the carbonate collecting agent in reverse floatation.6 kilograms/ton of nitration mixture consumptions
.Raw ore, collector dosage are 0.2 kilogram/ton
.Raw ore, silicate collecting agent in reverse floatation are 12 amine.Consumption is 0.080 kilogram/ton
.Raw ore.
Testing result shows: can obtain comprehensive concentrate yield 55.76%, P through flotation
2O
5Grade 36.45%, MgO content 0.23%, Fe
2O
3+ Al
2O
3Content 1.48%, SiO
2Content 4.87%, P
2O
5The open-circuit test result of the rate of recovery 76.34%.
Claims (5)
1. a silicon calcium quality phosphorus block rock flotation process of phosphorite is characterized in that, its step is following:
(1) mix direct flotation: with crushing raw ore, wet milling to fineness accounts for 92-99% for-200 purpose mass content, and the ore grinding mass concentration is 45-75%, adding direct flotation medicament, and adding that water sizes mixing to mass concentration is the ore pulp of 25-35% again; The direct flotation medicament is sodium carbonate, waterglass and aliphatic acid, and the consumption of sodium carbonate is 0.1-8 kilogram/ton
.Raw ore, the consumption of waterglass are 4-12 kilogram/ton
.Raw ore, the consumption of aliphatic acid are 0.5-5 kilogram/ton
.Raw ore;
Ore pulp after sizing mixing is dropped into floatation system, under 15-35 ℃, carry out direct flotation; Direct flotation is roughly selected earlier, roughly select froth pulp carry out 1-2 time selected, in the initial separatory cell in product and the cleaner cell product merge into comprehensive mine tailing I;
(2) carbonate reverse flotation: the froth pulp of the selected emersion of direct flotation is carried out the carbonate reverse flotation under 15-35 ℃; Reverse flotation adds adjustment agent and collecting agent; The reverse flotation froth pulp carries out carbonate and selects, and it is mine tailing II that carbonate selects froth pulp again; Described adjustment agent is the nitration mixture of inorganic acid, nitration mixture consumption 2-15 kilogram/ton
.Raw ore, collecting agent are the carbonate collecting agent in reverse floatation, and the consumption of collecting agent is 0.1-1.5 kilogram/ton
.Raw ore;
(3) silicate reverse flotation: product in the carbonate reverse flotation groove is carried out desliming; Coarse grain product after the desliming adds the silicate collecting agent and carries out the silicate reverse flotation; Flotation temperature is 15-35 ℃, and the reverse flotation froth pulp carries out silicate again and selects, and selecting froth pulp again is mine tailing III; The silicate collecting agent in reverse floatation is a lauryl amine, and its consumption is 0.02-0.15 kilogram/ton
.Raw ore; The carbonate reverse flotation selects the interior product of fine fraction product, silicate reverse flotation groove, the silicate reverse flotation of product, desliming operation in the groove to select the interior product of groove to merge into comprehensive concentrate more again.
2. silicon calcium quality phosphorus block rock flotation process of phosphorite according to claim 1 is characterized in that: in the step (1), direct flotation roughly select froth pulp carry out 2 times selected, the 1st 0.5-3 of sodium carbonate amount when selected kilogram/ton
.Raw ore, waterglass are 1-5 kilogram/ton
.Raw ore; The 2nd 0.5-3 of sodium carbonate amount when selected kilogram/ton
.Raw ore, waterglass are 1-5 kilogram/ton
.Raw ore.
3. silicon calcium quality phosphorus block rock flotation process of phosphorite according to claim 1 is characterized in that flotation time is respectively: the selections of top-uping are 9-20 minute, and carbonate reverse flotation section is 6-12 minute, and silicate reverse flotation section is 5-10 minute.
4. silicon calcium quality phosphorus block rock flotation process of phosphorite according to claim 3 is characterized in that flotation time is respectively: the flotation time of the selections of top-uping is 12-15 minute; Carbonate reverse flotation section is 6-10 minute, and silicate reverse flotation section is 6-9 minute.
5. silicon calcium quality phosphorus block rock flotation process of phosphorite according to claim 1 is characterized in that: the consumption of medicament sodium carbonate was 1-3 kilogram/ton when direct flotation was selected
.Raw ore, the consumption of waterglass are 1-3 kilogram/ton
.Raw ore; The nitration mixture consumption is 4-10 kilogram/ton during the carbonate reverse flotation
.Raw ore, collector dosage are 0.1-0.7 kilogram/ton
.Raw ore; Silicate reverse flotation lauryl amine consumption is 0.03-0.10 kilogram/ton
.Raw ore.
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| 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 |
| CN104475270A (en) * | 2014-12-29 | 2015-04-01 | 中蓝连海设计研究院 | Mineral processing method of mechanical de-magging treating collophanite with additional medium |
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| 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 |
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| CN111570082A (en) * | 2020-06-03 | 2020-08-25 | 瓮福（集团）有限责任公司 | Combined separation process for high-sesqui medium-low grade silico-calcic phosphorite |
| CN111570082B (en) * | 2020-06-03 | 2022-03-08 | 瓮福（集团）有限责任公司 | Combined separation process for high-sesqui medium-low grade silico-calcic phosphorite |
| CN112517231A (en) * | 2020-11-18 | 2021-03-19 | 云南磷化集团有限公司 | Flotation method for low-grade carbonate collophanite |
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Application publication date: 20121024 |