CN102716799A - Process method for removing phosphate impurities by combining gravity, centrifugal force and flotation - Google Patents
Process method for removing phosphate impurities by combining gravity, centrifugal force and flotation Download PDFInfo
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- CN102716799A CN102716799A CN2012101970260A CN201210197026A CN102716799A CN 102716799 A CN102716799 A CN 102716799A CN 2012101970260 A CN2012101970260 A CN 2012101970260A CN 201210197026 A CN201210197026 A CN 201210197026A CN 102716799 A CN102716799 A CN 102716799A
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Abstract
The invention relates to a process method for removing phosphate impurities by combining gravity, centrifugal force and flotation. By the aid of the mineral processing flow sheet of a water-only cyclone, a horizontal screw decanter centrifuge and reverse flotation, the process method includes the steps: (1) taking phosphate ore which is colloid phosphate and setting the content of P2O5 to range from 22% to 27%; (2) grinding the phosphate ore to have -200 meshes larger than 75% by a wet method and setting the solid content of ore pulp to range from 20% to 45%; (3) throwing the ore pulp into the water-only cyclone and setting feed pressure to range from 1.5kg/cm<2> to 2.5kg/cm<2> to obtain first-grade concentrate; (4) feeding tailings in the water-only cyclone into the horizontal screw decanter centrifuge at the speed of 50-100m<3>/h, setting the speed of a rotary drum of the horizontal screw decanter centrifuge to range from 1500r/min to 2500r/min and setting the differential speed of the rotary drum and a screw to range from 10r/min to 50r/min; (5) adding regulators into the concentrate in the horizontal screw decanter centrifuge and regulating the pH (potential of hydrogen) value of the ore pulp to range from 4 to 5; and (6) feeding the regulated ore pulp into a flotation machine, adding 400g/T-600g/T of magnesium removing collectors into the regulated ore pulp, and performing inflation and defoaming to obtain second-grade concentrate. The process method has the advantages that agent consumption in a flotation process is reduced by the process method, other impurities can be removed, the grade of the phosphate is greatly improved, and the recovery rate is also increased.
Description
Technical field
The invention belongs to collophane, especially the ore-dressing technique method and technology field of collophane reverse flotation.
Background technology
Day by day exhausted along with the high-quality phosphate rock resource, and in low-grade rock phosphate in powder can't reach instructions for use, could use after needing to handle through ore dressing, present beneficiated phosphate ore adopts direct flotation enriched phosphorus grade, the method for reverse flotation de-magging more.Though direct flotation can significantly improve the phosphorus grade, the medicine consumption is higher, needs 2 ~ 4kg, and beneficiation cost is high, and the medicament temperature influence is big, and reverse flotation can only remove the MgO in the phosphorus ore mostly, can not remove other impurity, and the phosphorus ore grade improves few.Gravitational separation equipment seldom is used for sorting because the rate of recovery is low, main and grinding attachment constitutes closed circuit grinding, is used to control slurry fineness.Like the technological process ore dressing of one Chinese patent application CS24748-0004-0002 employing heavymedia separation-two reverse flotations, it adopts cyclone to carry the smart tail of throwing, and concentrate falls the magnesium desiliconization with two reverse flotations again, but its rate of recovery is on the low side.Use the mining processing industry metallization processes flow process of hydrocyclone-horizontal screw centrifuge-reverse flotation not appear in the newspapers up to now.
Summary of the invention
The defective that the object of the invention exists to above-mentioned prior art just and provide a kind of more economical, rationally and the phosphorus concentrate quality of selecting better, can satisfy the mining processing industry metallization processes flow process that the hydrocyclone-horizontal screw centrifuge-reverse flotation of different product requirement combines.
The objective of the invention is to realize through following technical scheme.
Adopt the mineral processing circuit of hydrocyclone-horizontal screw centrifuge-reverse flotation, the steps include:
⑴ said rock phosphate in powder is the colloid phosphorus ore, P
2O
5Content is 22% ~ 27%;
⑵ rock phosphate in powder is through wet grinding to-200 orders＞75%, and the ore pulp solid content is 20% ~ 45%;
⑶ ore pulp is squeezed into hydrocyclone with pump, and giving ore deposit pressure is 1.5kg/cm
2~ 2.5kg/cm
2Promptly get I level concentrate;
⑷ hydrocyclone mine tailing is with 50 ~ 100m
3/ h feeds horizontal screw centrifuge; The Drum of Horizontal Screw Centrifuge Based rotating speed is 1500 ~ 2500r/min; Rotary drum and spiral difference rotating speed 10 ~ 50r/min;
⑸ horizontal screw centrifuge concentrate adds the adjustment agent, and the adjustment pulp PH value is 4 ~ 5;
⑹ the ore pulp that adjust gets into flotation device, adds de-magging collector simultaneously, and its consumption is 400g/T ~ 600g/T, through inflation, scrapes bubble, promptly gets II level concentrate.
The invention has the beneficial effects as follows, adopt process of the present invention to make floatation process Chinese medicine consumption reduce, can also remove other impurity, the phosphorus ore grade improves greatly, and the rate of recovery also is improved.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explanation.
Description of drawings
Fig. 1 is a schematic flow sheet of the present invention.
The specific embodiment
See Fig. 1, embodiment one
Carry out operational processes by following step:
⑴ will contain P
2O
5Be that 24% ~ 27% collophane wet grinding to fineness is-200 orders 80% ~ 85%, solid content is 25% ~ 30% ore pulp;
⑵ squeeze into hydrocyclone with ore pulp, and giving ore deposit pressure is 1.5kg/cm
2~ 2.5kg/cm
2
⑶ hydrocyclone mine tailing is with 50 ~ 70m
3/ h feeds horizontal screw centrifuge; The Drum of Horizontal Screw Centrifuge Based rotating speed is 2500r/min; Rotary drum and spiral difference rotating speed 50r/min;
⑷ horizontal screw centrifuge concentrate adds sulfuric acid, and the adjustment pulp PH value is 4 ~ 5;
⑸ the ore pulp that mix up gets into flotation device, adds the de-magging collector enuatrol simultaneously, and its consumption is 400g/T, through inflation, scrapes bubble.
Get I level concentrate P
2O
5Content is 30.5% ~ 31.8%, and MgO content is 0.8% ~ 1.0%, R
2O
3Content is 1.0% ~ 1.5%, II level concentrate P
2O
5Content is 23.0% ~ 24.8%,, MgO content is 0.5% ~ 0.8%, R
2O
3Content is 1.5% ~ 2.2%, and phosphorous recovery reaches 93% ~ 95%.(R
2O
3Be Fe
2O
3+ Al
2O
3)
Embodiment two
Carry out operational processes by following step:
⑴ will contain P
2O
5Be that 22% ~ 25% collophane wet grinding to fineness is-200 orders 85% ~ 90%, solid content is 30% ~ 35% ore pulp;
⑵ squeeze into hydrocyclone with ore pulp, and giving ore deposit pressure is 1.5kg/cm
2~ 2.5kg/cm
2
⑶ hydrocyclone mine tailing is with 70 ~ 85m
3/ h feeds horizontal screw centrifuge; Drum of Horizontal Screw Centrifuge Based rotating speed 2200r/min; Rotary drum and spiral difference rotating speed 40r/min;
⑷ horizontal screw centrifuge concentrate adds phosphoric acid, and the adjustment pulp PH value is 4 ~ 5;
⑸ the ore pulp that mix up gets into flotation device, adds de-magging collector linoleic acid sodium simultaneously, and its consumption is 500g/T, through inflation, scrapes bubble.
Get I level concentrate P
2O
5Content is 30.0% ~ 31.5%, and MgO content is 0.9% ~ 1.5%, R
2O
3Content is 1.2% ~ 1.5%; II level concentrate P
2O
5Content is 21.5% ~ 24.0%,, MgO content is 0.6% ~ 0.9%, R
2O
3Content is 1.5% ~ 2.0%, and phosphorous recovery reaches 91.0% ~ 93.5%.
Embodiment three
Carry out operational processes by following step:
⑴ will contain P
2O
5Be that 23% ~ 25% collophane wet grinding to fineness is-200 orders 75% ~ 85%, solid content is 35% ~ 40% ore pulp;
⑵ squeeze into hydrocyclone with ore pulp, and giving ore deposit pressure is 1.5kg/cm
2~ 2.5kg/cm
2
⑶ hydrocyclone mine tailing is with 60 ~ 80m
3/ h feeds horizontal screw centrifuge; The Drum of Horizontal Screw Centrifuge Based rotating speed is 1800r/min; Rotary drum and spiral difference rotating speed 25r/min;
⑷ horizontal screw centrifuge concentrate adds fluosilicic acid, and the adjustment pulp PH value is 4 ~ 5;
⑸ the ore pulp that mix up gets into flotation device, adds the de-magging collector odium stearate simultaneously, and its consumption is 600g/T, through inflation, scrapes bubble.
Get I level concentrate P
2O
5Content is 29.0% ~ 31.5%, and MgO content is 0.7% ~ 1.0%, R
2O
3Content is 1.2% ~ 1.8%; II level concentrate P
2O
5Content is 23.0% ~ 25.0%,, MgO content is 0.8% ~ 1.0%, R
2O
3Content is 1.8% ~ 2.5%, and phosphorous recovery reaches 94% ~ 96%.
Embodiment four
Carry out operational processes by following step:
⑴ will contain P
2O
5Be 23% ~ 26% collophane wet grinding to being scheduling to-200 orders 90% ~ 95%, solid content is 20% ~ 25% ore pulp;
⑵ squeeze into hydrocyclone with ore pulp, and giving ore deposit pressure is 1.5kg/cm
2~ 2.5kg/cm
2
⑶ hydrocyclone mine tailing is with 85 ~ 100m
3/ h feeds horizontal screw centrifuge; The Drum of Horizontal Screw Centrifuge Based rotating speed is 1500r/min; Rotary drum and spiral difference rotating speed 10r/min;
⑷ horizontal screw centrifuge concentrate adds sulfuric acid, and the adjustment pulp PH value is 4 ~ 5;
⑸ the ore pulp that mix up gets into flotation device, adds the de-magging collector enuatrol simultaneously, and its consumption is 450g/T, through inflation, scrapes bubble.
Get I level concentrate P
2O
5Content is 30.0% ~ 31.0%, and MgO content is 0.8% ~ 1.4%, R
2O
3Content is 1.4% ~ 1.8%, II level concentrate P
2O
5Content is 23.8% ~ 26.0%,, MgO content is 0.5% ~ 1.0%, R
2O
3Content is 2.2% ~ 2.8%, and phosphorous recovery reaches 91% ~ 94%.
Claims (1)
1. one kind is made up the process of phosphorus ore impurity with gravity, centrifugal force, flotation, it is characterized in that: adopt the mineral processing circuit of hydrocyclone-horizontal screw centrifuge-reverse flotation, the steps include:
⑴ said rock phosphate in powder is the colloid phosphorus ore, P
2O
5Content is 22% ~ 27%;
⑵ rock phosphate in powder is through wet grinding to-200 orders＞75%, and the ore pulp solid content is 20% ~ 45%;
⑶ ore pulp is squeezed into hydrocyclone, and giving ore deposit pressure is 1.5kg/cm
2~ 2.5kg/cm
2Promptly get I level concentrate;
⑷ hydrocyclone mine tailing is with 50 ~ 100m
3/ h feeds horizontal screw centrifuge, and the Drum of Horizontal Screw Centrifuge Based rotating speed is 1500 ~ 2500r/min; Rotary drum and spiral difference rotating speed 10 ~ 50r/min;
⑸ horizontal screw centrifuge concentrate adds the adjustment agent, and the adjustment pulp PH value is 4 ~ 5;
⑹ the ore pulp that adjust gets into flotation device, adds de-magging collector simultaneously, and its consumption is 400g/T ~ 600g/T, through inflation, scrapes bubble, promptly gets II level concentrate.
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|---|---|---|---|
| CN2012101970260A CN102716799A (en) | 2012-06-14 | 2012-06-14 | Process method for removing phosphate impurities by combining gravity, centrifugal force and flotation |
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|---|---|---|---|
| CN2012101970260A CN102716799A (en) | 2012-06-14 | 2012-06-14 | Process method for removing phosphate impurities by combining gravity, centrifugal force and flotation |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240169A (en) * | 2013-05-17 | 2013-08-14 | 煤炭科学研究总院唐山研究院 | Gravity-flotation combined phosphorite separation process |
| CN105750090A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Silica-calcia bearing phosphate rock separation method |
| CN105880032A (en) * | 2016-05-09 | 2016-08-24 | 武汉科技大学 | Middle-low grade collophanite heavy floating combined sorting method |
| CN106807557A (en) * | 2016-11-15 | 2017-06-09 | 江西铜业集团公司 | A kind of method of microfine copper-molybdenum separation of pulp concentrate |
| CN107055494A (en) * | 2017-04-13 | 2017-08-18 | 云南胜威化工有限公司 | The method that a kind of spent acid in utilization sulfuric acid method titanium pigment production technology selects phosphorus ore |
| CN110369121A (en) * | 2019-07-25 | 2019-10-25 | 宜都兴发化工有限公司 | Screening-gravity separation technology is added before phosphorus ore direct flotation operation |
| CN112619885A (en) * | 2020-12-25 | 2021-04-09 | 贵州川恒化工股份有限公司 | Beneficiation method for magnesium-containing high-silicon calcium collophanite |
| CN114682387A (en) * | 2020-12-30 | 2022-07-01 | 中蓝连海设计研究院有限公司 | Phosphorite double-reverse flotation method |
| CN116177509A (en) * | 2022-11-25 | 2023-05-30 | 贵州胜泽威化工有限公司 | Method for continuously preparing nano spherical ferric phosphate by carbon fusion method |
Citations (4)
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|---|---|---|---|---|
| US4441993A (en) * | 1975-11-03 | 1984-04-10 | Fluor Corporation | Flotation process |
| CN1806931A (en) * | 2006-01-27 | 2006-07-26 | 湖北宜化大江复合肥有限公司 | Mineral dressing method of mid-low grade collophane |
| CN101049584A (en) * | 2007-04-09 | 2007-10-10 | 云南省化工研究院 | Method for demagging from phosphate ore |
| CN101905190A (en) * | 2010-07-05 | 2010-12-08 | 北京矿冶研究总院 | Collophanite beneficiation method |
-
2012
- 2012-06-14 CN CN2012101970260A patent/CN102716799A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441993A (en) * | 1975-11-03 | 1984-04-10 | Fluor Corporation | Flotation process |
| CN1806931A (en) * | 2006-01-27 | 2006-07-26 | 湖北宜化大江复合肥有限公司 | Mineral dressing method of mid-low grade collophane |
| CN101049584A (en) * | 2007-04-09 | 2007-10-10 | 云南省化工研究院 | Method for demagging from phosphate ore |
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| 朱从杰: "磷矿选别用水介质旋流器的研制", 《矿产保护与利用》, no. 06, 25 December 1997 (1997-12-25), pages 34 - 38 * |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240169A (en) * | 2013-05-17 | 2013-08-14 | 煤炭科学研究总院唐山研究院 | Gravity-flotation combined phosphorite separation process |
| CN103240169B (en) * | 2013-05-17 | 2014-07-16 | 煤炭科学研究总院唐山研究院 | Gravity-flotation combined phosphorite separation process |
| CN105750090A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Silica-calcia bearing phosphate rock separation method |
| CN105880032A (en) * | 2016-05-09 | 2016-08-24 | 武汉科技大学 | Middle-low grade collophanite heavy floating combined sorting method |
| CN106807557A (en) * | 2016-11-15 | 2017-06-09 | 江西铜业集团公司 | A kind of method of microfine copper-molybdenum separation of pulp concentrate |
| CN107055494A (en) * | 2017-04-13 | 2017-08-18 | 云南胜威化工有限公司 | The method that a kind of spent acid in utilization sulfuric acid method titanium pigment production technology selects phosphorus ore |
| CN110369121A (en) * | 2019-07-25 | 2019-10-25 | 宜都兴发化工有限公司 | Screening-gravity separation technology is added before phosphorus ore direct flotation operation |
| CN112619885A (en) * | 2020-12-25 | 2021-04-09 | 贵州川恒化工股份有限公司 | Beneficiation method for magnesium-containing high-silicon calcium collophanite |
| CN114682387A (en) * | 2020-12-30 | 2022-07-01 | 中蓝连海设计研究院有限公司 | Phosphorite double-reverse flotation method |
| CN114682387B (en) * | 2020-12-30 | 2024-04-23 | 中蓝连海设计研究院有限公司 | Phosphorite double reverse flotation method |
| CN116177509A (en) * | 2022-11-25 | 2023-05-30 | 贵州胜泽威化工有限公司 | Method for continuously preparing nano spherical ferric phosphate by carbon fusion method |
| CN116177509B (en) * | 2022-11-25 | 2024-05-24 | 贵州胜泽威化工有限公司 | Method for continuously preparing nano spherical ferric phosphate by carbon fusion method |
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