CN102284348A - Mineral dressing method of producing phosphate concentrate powder by utilizing low-grade phosphate rocks - Google Patents
Mineral dressing method of producing phosphate concentrate powder by utilizing low-grade phosphate rocks Download PDFInfo
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- CN102284348A CN102284348A CN2011101537458A CN201110153745A CN102284348A CN 102284348 A CN102284348 A CN 102284348A CN 2011101537458 A CN2011101537458 A CN 2011101537458A CN 201110153745 A CN201110153745 A CN 201110153745A CN 102284348 A CN102284348 A CN 102284348A
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Abstract
The invention provides a mineral dressing method of producing phosphate concentrate powder by utilizing low-grade phosphate rocks. The method comprises the following steps: 1, crushing phosphate rocks to be below 20mm; 2, feeding the crushed phosphate rocks into a storage bin at the head of a rotary kiln, feeding the crushed phosphate rocks into the rotary kiln through a discharge pipe of the storage bin to perform calcination for a return stroke at the temperature of between 1,200 and 1,300 DEG C; 3, performing shock cooling on the calcined phosphate rocks through a water pool at the tail of the kiln, and grinding the calcined phosphate rocks in a ball mill to prepare 200-mesh slurry; and 4, feeding the slurry in a rougher, and adding 1-1.1 percent mixed acid inhibitor and 0.16-0.21 percent assistant collector in a stirring process of a stirrer to obtain the phosphate concentrate powder which is deposited on the lower side. According to the mineral dressing method, high-grade quality phosphate concentrate powder can be prepared by sufficiently utilizing the low-grade phosphate rocks in a scientific and simple flotation method, and the process processing requirements of electrothermal-process phosphate preparation and wet-process phosphoric acid can be fulfilled. The method has the characteristics of sufficiently utilizing resources and reducing total cost.
Description
Technical field
The present invention relates to a kind of beneficiation method of rock phosphate in powder, a kind of specifically beneficiation method of utilizing low-grade phosphate ore stone to produce the phosphorus fine ore.
Background technology
Phosphorus ore is a kind of important change raw mineral materials; in existing more than the 100 year history of industrial application; extensive utilization along with economic development and phosphorus mineral product; phosphate rock resource is fewer and feweri; particularly existing system phosphorus technology and wet method phosphoric acid manufacture process are to the grade and the quality requirement strictness of rock phosphate in powder; caused the consumption of China's high-grade phosphate rock resource too fast; and a lot of low-grade phosphate rock resources are owing to be that the colloid phosphorus ore can't carry out the ore dressing utilization; discarded by loss in vain; because natural resources is non-renewable; the phosphate rock resource in the existing whole nation has faced situation in short supply; the protection environment makes full use of effective resource and guarantees that economic sustainable development is the matter of utmost importance that China's phosphorous chemical industry industry is badly in need of solution.
Summary of the invention
The objective of the invention is in order effectively to alleviate the problem of the phosphate rock resource scarcity of above-mentioned existence, a kind of beneficiation method of utilizing low-grade phosphate ore stone to produce the phosphorus fine ore is provided, can make full use of low-grade phosphate rock resource, ore dressing by science obtains high-quality phosphorus fine ore of high grade, is used to satisfy present stage electric heating legal system phosphorus and the raw material needs of phosphoric acid by wet process industry.
The present invention includes phosphorus pentoxide content at 20%～24% rock phosphate in powder, the technical scheme that is adopted is: concrete steps divide following several steps to carry out:
Step 1: rock phosphate in powder is sent into the broken crusher machine of jaw to 20mm;
Step 2: the rock phosphate in powder after the fragmentation is sent into the storage bin of rotary kiln end, send into the calcining that rotary kiln carries out a backhaul through the storage bin tremie pipe, calcining heat is controlled at 1200～1300 ℃;
Step 3: the rock phosphate in powder after will calcining is transported into ball mill and grinds into 200 purpose slips after the quenching of kiln afterbay;
Step 4: slip is sent in the initial separatory cell, added 1%～1.1% nitration mixture inhibitor and 0.16～0.21% auxilliary receipts agent in the whipping process of mixer, what be deposited in the below is the phosphorus fine ore.
In the such scheme: the nitration mixture inhibitor in the step 4 is that phosphorus pentoxide content is that 25% industrial phosphoric acid by wet process and content are 95% sulfuric acid, respectively is 50% mix acid liquor.
Auxilliary receipts agent in the step 4 is the agent of the auxilliary receipts of PA-64.
The present invention passes through technical scheme, since with low-grade rock phosphate in powder through fragmentation by scientific and reasonable high-temperature calcination, make the carbonate objectionable impurities fully obtain decomposition, again through the floating and precipitation of initial separatory cell by inhibitor and the agent of auxilliary receipts, make the quality difference of phosphorus ore be able to layering and carry out effective sorting, solved mixing naturally of present low-grade colloid phosphorus ore quality, the problem of ore dressing therefrom, low-grade rock phosphate in powder is fully used, can therefrom decompose and obtain high-grade high-quality phosphorus fine ore, the production technology that can alleviate present electric heating legal system phosphorus and warm therapy phosphoric acid is required, has resource of making full use of and the distinguishing feature that can reduce integrated cost.
The specific embodiment
Embodiment 1: calculate to produce 500kg phosphorus fine ore, aerobicization two phosphorus contents are at 20～24% rock phosphate in powder 900kg:
Step 1: at first rock phosphate in powder is sent into the broken crusher machine of jaw to 20mm;
Step 2: the rock phosphate in powder after the fragmentation is sent into the calcining that rotary kiln carries out a backhaul, and calcining heat is controlled at 1200～1300 ℃;
Step 3: the rock phosphate in powder after will calcining is after the quenching of kiln afterbay, and sending into that ball mill grinds is 200 purpose slips;
Step 4: slip is sent in the initial separatory cell, and the mixed acid inhibitor 5kg of adding 1% and 0.16% auxilliary receipts agent 1.44kg promptly obtain the phosphorus fine ore 500kg below being deposited in the whipping process of mixer.
Embodiment 2: calculate to produce 1000kg phosphorus fine ore, aerobicization two phosphorus contents are at 20～24% rock phosphate in powder 2000kg:
Step 1: at first rock phosphate in powder is sent into the broken crusher machine of jaw to 20mm;
Step 2: the rock phosphate in powder after the fragmentation is sent into the calcining that rotary kiln carries out a backhaul, and calcining heat is controlled at 1200～1300 ℃;
Step 3: the rock phosphate in powder after will calcining is after the quenching of kiln afterbay, and sending into that ball mill grinds is 200 purpose slips;
Step 4: slip is sent in the initial separatory cell, and the mixed acid inhibitor 10.5kg of adding 1.05% and 0.18% auxilliary receipts agent 1.8kg promptly obtain the phosphorus fine ore 1000kg below being deposited in the whipping process of mixer.
Embodiment 3: calculate to produce 1500kg phosphorus fine ore, aerobicization two phosphorus contents are at 20～24% rock phosphate in powder 2900kg:
Step 1: at first rock phosphate in powder is sent into the broken crusher machine of jaw to 20mm;
Step 2: the rock phosphate in powder after the fragmentation is sent into the calcining that rotary kiln carries out a backhaul, and calcining heat is controlled at 1200～1300 ℃;
Step 3: the rock phosphate in powder after will calcining is after the quenching of kiln afterbay, and sending into that ball mill grinds is 200 purpose slips;
Step 4: slip is sent in the initial separatory cell, and the mixed acid inhibitor 16.5kg of adding 1.1% and 0.21% auxilliary receipts agent 3.15kg promptly obtain the phosphorus fine ore 1500kg below being deposited in the whipping process of mixer.
Embodiment 4: calculate to produce 2000kg phosphorus fine ore, aerobicization two phosphorus contents are at 20～24% rock phosphate in powder 3800kg:
Step 1: at first rock phosphate in powder is sent into the broken crusher machine of jaw to 20mm;
Step 2: the rock phosphate in powder after the fragmentation is sent into the calcining that rotary kiln carries out a backhaul, and calcining heat is controlled at 1200～1300 ℃;
Step 3: the rock phosphate in powder after will calcining is after the quenching of kiln afterbay, and sending into that ball mill grinds is 200 purpose slips;
Step 4: slip is sent in the initial separatory cell, and the mixed acid inhibitor 20kg of adding 1% and 0.2% auxilliary receipts agent 4kg promptly obtain the phosphorus fine ore 2000kg below being deposited in the whipping process of mixer.
Related nitration mixture inhibitor is to be that 25% industrial phosphoric acid by wet process and content are 95% sulfuric acid with phosphorus pentoxide content in the above-mentioned enforcement, respectively is 50% to mix.Used auxilliary receipts agent is the agent of the auxilliary receipts of PA-64.
Related rotary kiln is to produce traditional rotary kiln that cement uses in the technical solution of the present invention, is meant traditional material cephalocaudal operation calcination process in kiln in a backhaul calcining described in the step 2, about about 2 hours of backhaul of actual calcining.
Low-grade phosphate ore stone involved in the present invention needs 1800～2000kg by every production 1000kg phosphorus fine ore, and phosphorus pentoxide content calculates at 20～24% rock phosphate in powder.Grinding into 200 purpose slips described in the step 3), is that the moisture rock phosphate in powder of rock phosphate in powder after the water quenching after the calcining grinds and form.
Claims (3)
1. beneficiation method of utilizing low-grade phosphate ore stone to produce the phosphorus fine ore comprises phosphorus pentoxide content at 20%～24% rock phosphate in powder, and it is characterized in that: concrete steps divide following several steps to carry out:
Step 1: rock phosphate in powder is sent into the broken crusher machine of jaw to 20mm;
Step 2: the rock phosphate in powder after the fragmentation is sent into the storage bin of rotary kiln end, send into the calcining that rotary kiln carries out a backhaul through the storage bin tremie pipe, calcining heat is controlled at 1200～1300 ℃;
Step 3: the rock phosphate in powder after will calcining is transported into ball mill and grinds into 200 purpose slips after the quenching of kiln afterbay;
Step 4: slip is sent in the initial separatory cell, added 1%～1.1% nitration mixture inhibitor and 0.16～0.21% auxilliary receipts agent in the whipping process of mixer, what be deposited in the below is the phosphorus fine ore.
2. a kind of beneficiation method of utilizing low-grade phosphate ore stone to produce the phosphorus fine ore according to claim 1, its feature is being: the nitration mixture inhibitor in the step 4 is that phosphorus pentoxide content is that 25% industrial phosphoric acid by wet process and content are 95% sulfuric acid, respectively is 50% mix acid liquor.
3. the beneficiation method of utilizing low-grade phosphate ore stone to produce the phosphorus fine ore according to claim 1, its feature is being: the auxilliary receipts agent in the step 4 is the agent of the auxilliary receipts of PA-64.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011101537458A CN102284348A (en) | 2011-05-27 | 2011-05-27 | Mineral dressing method of producing phosphate concentrate powder by utilizing low-grade phosphate rocks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101537458A CN102284348A (en) | 2011-05-27 | 2011-05-27 | Mineral dressing method of producing phosphate concentrate powder by utilizing low-grade phosphate rocks |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274379A (en) * | 2013-06-13 | 2013-09-04 | 四川商舟实业有限公司 | Process for producing industrial phosphate with calcination method |
| CN105921259A (en) * | 2016-05-09 | 2016-09-07 | 贵州省冶金化工研究所 | Method for producing feed grade monocalcium phosphate through medium and low grade mixed phosphate ore |
| CN109160499A (en) * | 2018-09-30 | 2019-01-08 | 贵州芭田生态工程有限公司 | The preparation method of the accurate method and phosphorus concentrate for determining that phosphorus ore calcining is qualified |
| CN109264685A (en) * | 2018-09-30 | 2019-01-25 | 贵州芭田生态工程有限公司 | Phosphorus ore calcines slag wet ball grinding method and phosphorus ore mixed slurry |
| CN110090729A (en) * | 2019-03-14 | 2019-08-06 | 昆明理工大学 | Utilize the method for flotation tailing desulfurization auxiliary efficient separation phosphorus concentrate |
Citations (3)
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| JPS58196841A (en) * | 1983-03-24 | 1983-11-16 | Ishikawajima Harima Heavy Ind Co Ltd | Fluidized roasting apparatus |
| CN1053418A (en) * | 1991-02-13 | 1991-07-31 | 云南省宣威县益丰磷肥厂 | Production process of defluorinated phosphate fertilizer |
| CN1135468A (en) * | 1995-05-10 | 1996-11-13 | 陈德荣 | Formula of silicon-calcium-magnesium-phosphorus fertilizer and production method thereof |
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2011
- 2011-05-27 CN CN2011101537458A patent/CN102284348A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58196841A (en) * | 1983-03-24 | 1983-11-16 | Ishikawajima Harima Heavy Ind Co Ltd | Fluidized roasting apparatus |
| CN1053418A (en) * | 1991-02-13 | 1991-07-31 | 云南省宣威县益丰磷肥厂 | Production process of defluorinated phosphate fertilizer |
| CN1135468A (en) * | 1995-05-10 | 1996-11-13 | 陈德荣 | Formula of silicon-calcium-magnesium-phosphorus fertilizer and production method thereof |
Non-Patent Citations (4)
| Title |
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| 天台山试验专题组: "焙烧-浮选富集天台山磷块岩矿石", 《化工矿物与加工》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274379A (en) * | 2013-06-13 | 2013-09-04 | 四川商舟实业有限公司 | Process for producing industrial phosphate with calcination method |
| CN105921259A (en) * | 2016-05-09 | 2016-09-07 | 贵州省冶金化工研究所 | Method for producing feed grade monocalcium phosphate through medium and low grade mixed phosphate ore |
| CN105921259B (en) * | 2016-05-09 | 2018-07-31 | 贵州省冶金化工研究所 | The method for producing feed-level calcium biphosphate using middle-low grade mixing rock phosphate in powder |
| CN109160499A (en) * | 2018-09-30 | 2019-01-08 | 贵州芭田生态工程有限公司 | The preparation method of the accurate method and phosphorus concentrate for determining that phosphorus ore calcining is qualified |
| CN109264685A (en) * | 2018-09-30 | 2019-01-25 | 贵州芭田生态工程有限公司 | Phosphorus ore calcines slag wet ball grinding method and phosphorus ore mixed slurry |
| CN110090729A (en) * | 2019-03-14 | 2019-08-06 | 昆明理工大学 | Utilize the method for flotation tailing desulfurization auxiliary efficient separation phosphorus concentrate |
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Application publication date: 20111221 |