CN102320763B - Phosphogypsum purification and neutralization apparatus - Google Patents
Phosphogypsum purification and neutralization apparatus Download PDFInfo
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- CN102320763B CN102320763B CN 201110239363 CN201110239363A CN102320763B CN 102320763 B CN102320763 B CN 102320763B CN 201110239363 CN201110239363 CN 201110239363 CN 201110239363 A CN201110239363 A CN 201110239363A CN 102320763 B CN102320763 B CN 102320763B
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Abstract
The present invention discloses a phosphogypsum purification and neutralization apparatus. The phosphogypsum purification and neutralization apparatus comprises a purification device and a neutralization device. The purification device comprises a phosphogypsum feeding pipeline (15), a turntable filter (1), a washing and cycling water tank (2), a vacuum pump (3), a wastewater conveying pump (9), a filter cloth regenerating and washing pump (4) and a material placing chute (14). The neutralization device comprises a material feeding chute (16), a drive device (17), a neutralizing and mixing stirrer (5) and a cylinder (18). The neutralizing and mixing stirrer (5) is connected with a lime bin (12) through a lime conveying belt, and is connected with the material placing chute (14) through a phosphogypsum material conveying belt (6). An outlet of the neutralizing and mixing stirrer (5) is connected with a phosphogypsum product conveying belt (11). With the present invention, the phosphogypsum produced through a wet-process phosphoric acid apparatus can be recovered and utilized so as to provide great economic benefits.
Description
Technical field
The present invention relates to purify neutralising arrangement, specifically, relate to a kind of phosphogypsum purification neutralising arrangement.
Background technology
Phosphogypsum mainly results from the solid waste of discharging in the Wet Phosphoric Acid Plant production process, because the phosphogypsum that Wet Phosphoric Acid Plant produces contains the not plurality of impurities such as phosphoric acid, silicofluoric acid and organic matter of washes clean, outside at present phosphogypsum brickmaking, cement setting retarder use as raw material, the phosphogypsum that Wet Phosphoric Acid Plant produces is difficult to recycle in the Thistle board building trade, and phosphogypsum regeneration rate is lower.Present treatment process is to starch with the slag stock pump to get to the stacking of phosphogypsum slag field again, constantly increases the slag field and stores up pressure, also can cause environmental pollution.
In the Chinese patent database, relating to phosphogypsum purification device application part has " a kind of phosphogypsum treatment installation " No. 200820174900.8, is the technical scheme of the purification neutralising arrangement of raw material production Thistle board but also do not have so far a kind of technique and device to the phosphogypsum that Wet Phosphoric Acid Plant produces.
Summary of the invention
The object of the invention is to provide a kind of phosphogypsum purification neutralising arrangement, and the phosphogypsum purification neutralization of using this device phosphoric acid by wet process can be produced reaches the technical parameter requirement take phosphogypsum as raw material Thistle board processed.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of phosphogypsum purification neutralising arrangement comprises refining plant and neutralising arrangement;
Described refining plant by phosphogypsum feeding line, filter, cycles of washing tank, vacuum pump form, waste water transferpump, filter cloth regeneration water pump and feeding chute form, filter and vacuum pump are supporting, filter is communicated with filter cloth wash water pump and waste water transferpump respectively by the cycles of washing tank, filter is provided with feeding chute, and this feeding chute is communicated with phosphogypsum raw material belt conveyor;
Described neutralising arrangement by charging chute, drive unit, in and mixing agitator and cylindrical shell form, in link to each other with lime bin by the lime measuring belt with mixing agitator, link to each other with feeding chute by phosphogypsum raw material belt conveyor, in link to each other with phosphogypsum product belt conveyor with the outlet of mixing agitator.
Above-mentioned vacuum pump vacuumizes and makes the phosphogypsum filter cake moisture reach 20～25%.
Adding lime in above-mentioned and in the mixing agitator is to add 0.5～1.0% of phosphogypsum quality.
Phosphogypsum pH value after the above-mentioned neutralization is 4～6.
Principle of the present invention and using method are: wash the purification filter with water and remove phosphogypsum black thing and the plurality of impurities such as part phosphoric acid, silicofluoric acid, acid non-soluble substance and organic matter, phosphogypsum after the filtration neutralizes with lime again, and the phosphogypsum product of output can reach the phosphogypsum index request that Thistle board uses after the neutralization.During use, the phosphogypsum slag slurry of phosphoric acid plant being sent here by the metering of phosphogypsum slag slurry measures the rear filter that adds, after regulating the size washing of the washing water yield, waste water is sent to phosphoric acid plant and is processed, vacuumize and make the phosphogypsum filter cake moisture reach 20～25%, filter cake enters phosphogypsum raw material belt by the spiral blanking, analyze the phosphogypsum pH value of phosphogypsum raw material belt conveyor, again after filtration after the phosphogypsum metering in 0.5～1.0% ratio add lime in and in agitator and the phosphogypsum impurity neutralize, the phosphogypsum pH value after the neutralization is 4～6; Obtaining Thistle board uses phosphogypsum to be the index request of raw material.
The invention has the beneficial effects as follows: can consume phosphogypsum, the solid waste phosphogypsum of discharging in the Wet Phosphoric Acid Plant production process is digested in enterprises, not only prolonged the time limit of storing up of slag field, environmental contamination reduction, also realize the comprehensive utilization of phosphogypsum " resource utilization, minimizing, innoxious ", brought very large economic interests to enterprise.
Description of drawings
Fig. 1 is structural representation of the present invention;
Mark among the figure: 1, filter; 2, cycles of washing water pump; 3, vacuum pump; 4, filter cloth regeneration washing pump; 5, in and mixing agitator; 6, phosphogypsum raw material belt conveyor; 7, phosphogypsum slag slurry metering; 8, filter the phosphogypsum metering; 9, waste water transferpump; 10, lime belt conveyor; 11, phosphogypsum product belt conveyor; 12, lime bin; 13, lime metering; 14, feeding chute; 15, phosphogypsum feeding line; 16, charging chute; 17, drive unit; 18, cylindrical shell.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, further specify beneficial effect of the present invention.
Embodiment
Certain factory adopts the present invention, installs such as accompanying drawing,
Refining plant is comprised of phosphogypsum feeding line 15, filter 1, cycles of washing tank 2, vacuum pump 3, waste water transferpump 9, filter cloth regeneration washing pump 4 and feeding chute 14, filter 1 is supporting with vacuum pump 3, filter 1 is connected with filter cloth regeneration washing pump and waste water transferpump 9 respectively by cycles of washing tank 2, filter 1 is provided with feeding chute 14, and this feeding chute 14 is connected with phosphogypsum raw material belt conveyor 6;
Neutralising arrangement by charging chute 16, drive unit 17, in and mixing agitator 5 and cylindrical shell 18 form, in link to each other with lime bin 12 by lime belt conveyor 10 with mixing agitator 5, link to each other with feeding chute 14 by phosphogypsum raw material belt conveyor 6, in link to each other with phosphogypsum product belt conveyor 11 with the outlet of mixing agitator 5.
Described vacuum pump 3 vacuumizes and makes the phosphogypsum filter cake moisture reach 20～25%.
Adding lime in described and in the mixing agitator 5 is to add 0.5～1.0% of phosphogypsum quality.
Phosphogypsum pH value after the described neutralization is 4～6.
The filtration area of described filter 1 is 50m
2The turntable filter.
Reach the duplex stirring mixer of 60t/h in described for throughput with mixing agitator 5.
This factory uses said apparatus to produce continuously, and throughput reaches 60t/h.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment does according to technical spirit originally.
Claims (4)
1. a phosphogypsum purification neutralising arrangement is characterized in that it comprises refining plant and neutralising arrangement;
Described refining plant is by phosphogypsum feeding line (15), filter (1), cycles of washing tank (2), vacuum pump (3), waste water transferpump (9), filter cloth regeneration washing pump (4) and feeding chute (14) form, filter (1) is supporting with vacuum pump (3), filter (1) is connected with filter cloth regeneration washing pump and waste water transferpump (9) respectively by cycles of washing tank (2), filter (1) is provided with feeding chute (14), and this feeding chute (14) is connected with phosphogypsum raw material belt conveyor (6);
Described neutralising arrangement by charging chute (16), drive unit (17), in and mixing agitator (5) and cylindrical shell (18) form, in link to each other with lime bin (12) by lime belt conveyor (10) with mixing agitator (5), link to each other with feeding chute (14) by phosphogypsum raw material belt conveyor (6), in link to each other with phosphogypsum product belt conveyor (11) with the outlet of mixing agitator (5).
2.
According to claim 1The phosphogypsum purification neutralising arrangement is characterized in that described vacuum pump (3) vacuumizes to make the phosphogypsum filter cake moisture reach 20～25%.
3.
According to claim 1The phosphogypsum purification neutralising arrangement, it is characterized in that described in and to add lime in the mixing agitator (5) be to add 0.5～1.0% of phosphogypsum quality.
4.
According to claim 1A kind of phosphogypsum purification neutralising arrangement is characterized in that the phosphogypsum pH value after the described neutralization is 4～6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110239363 CN102320763B (en) | 2011-08-19 | 2011-08-19 | Phosphogypsum purification and neutralization apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110239363 CN102320763B (en) | 2011-08-19 | 2011-08-19 | Phosphogypsum purification and neutralization apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN102320763A CN102320763A (en) | 2012-01-18 |
| CN102320763B true CN102320763B (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110239363 Active CN102320763B (en) | 2011-08-19 | 2011-08-19 | Phosphogypsum purification and neutralization apparatus |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482667B (en) * | 2013-09-23 | 2014-10-15 | 瓮福（集团）有限责任公司 | Quick and efficient purifying method for phosphogypsum |
| CN103754842A (en) * | 2014-02-18 | 2014-04-30 | 瓮福紫金化工股份有限公司 | Method for increasing yield of phosphorus from phosphogypsum washing |
| CN104230193A (en) * | 2014-08-18 | 2014-12-24 | 中国海洋石油总公司 | Method for recycling phosphogypsum solid waste |
| CN105439484A (en) * | 2014-12-05 | 2016-03-30 | 贵州路发实业有限公司 | Method for using dry process to add CaO into by-product alkalescence phosphogypsum |
| CN104591252A (en) * | 2015-01-05 | 2015-05-06 | 安徽新中远化工科技有限公司 | Purification treatment method of phosphogypsum |
| CN105000585B (en) * | 2015-06-12 | 2016-11-09 | 泰山石膏股份有限公司 | In ardealite and purification process technique |
| CN105645796B (en) * | 2016-02-24 | 2018-07-27 | 郑州三迪建筑科技有限公司 | A kind of pretreatment system of industrial gypsum |
| CN105601139B (en) * | 2016-03-23 | 2018-06-19 | 郑州三迪建筑科技有限公司 | A kind of neutralization device of the pretreatment system of industrial gypsum |
| CN106517292B (en) * | 2016-10-28 | 2019-02-05 | 湖北宜化集团有限责任公司 | A kind of method and device of ardealite purification |
| CN106734064B (en) * | 2016-11-29 | 2023-08-04 | 贵阳开磷化肥有限公司 | Phosphogypsum harmless treatment device and phosphogypsum harmless treatment method for wet-process phosphoric acid output |
| CN114180918A (en) * | 2021-12-27 | 2022-03-15 | 云南胜威化工有限公司 | Phosphogypsum harmless treatment as ecological restoration material and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876204A (en) * | 2006-07-06 | 2006-12-13 | 上海南化水处理技术工程有限公司 | Ardealite innocent treatment method |
| CN201351144Y (en) * | 2008-11-04 | 2009-11-25 | 潍坊学院 | Phosphogypsum treatment installation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2836913B1 (en) * | 2002-03-08 | 2006-11-24 | Lafarge Platres | DEVICE FOR DRYING AND / OR COOKING GYPSUM |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876204A (en) * | 2006-07-06 | 2006-12-13 | 上海南化水处理技术工程有限公司 | Ardealite innocent treatment method |
| CN201351144Y (en) * | 2008-11-04 | 2009-11-25 | 潍坊学院 | Phosphogypsum treatment installation |
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| CN102320763A (en) | 2012-01-18 |
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Address after: 550500 Guizhou Province, Qiannan Buyei and Miao Autonomous Prefecture Fuquan Racecourse town Yingbin Road No. 1 Wengfu group Patentee after: WENGFU GROUP Co.,Ltd. Address before: 23, 550002 floor, urn Fuk international, No. 57, South City Road, Guizhou, Guiyang Patentee before: WENGFU GROUP Co.,Ltd. |