CN202610300U - Device for recovering magnesium from mid/low-grade high-magnesium phosphate rocks - Google Patents
Device for recovering magnesium from mid/low-grade high-magnesium phosphate rocks Download PDFInfo
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- CN202610300U CN202610300U CN2012202406092U CN201220240609U CN202610300U CN 202610300 U CN202610300 U CN 202610300U CN 2012202406092 U CN2012202406092 U CN 2012202406092U CN 201220240609 U CN201220240609 U CN 201220240609U CN 202610300 U CN202610300 U CN 202610300U
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Abstract
The utility model discloses a device for recovering magnesium from mid/low-grade high-magnesium phosphate rocks, comprising a magnesium removing reaction tank, a filter, a re-pulping tank, a neutral reaction tank, a thickener, a filter press and a pneumatic dryer, wherein a discharging port of the magnesium removing reaction tank is communicated with a feeding port of the filter press through a pipe; a solid discharging port of the filter press is communicated with the re-pulping tank through a belt conveyer; a filtrate discharging port of the filter press is communicated with a feeding port of the neutral reaction tank through a pipe; a discharging port of the neutral reaction tank is communicated with a feeding port of the thickener through a pipe; a discharging port of the thickener is communicated with a feeding port of the filter press through a pipe; a solid discharging port of the filter press is communicated with the pneumatic dryer; and a liquid discharging port of the filter press is communicated with a feeding port of the re-pulping tank through a pipe. The device is reasonable is design, small in floor space, simple in equipment, free from wastewater and waste residue discharging, low in environment pollution and low in running cost, and is a clean industrial production device which has prominent economic, environmental and social benefits.
Description
Technical field
The utility model relates to a kind of chemical plant installations, is used for the device that therefrom low-grade high-magnesium-phosphorus ore reclaims magnesium on particularly a kind of chemical industry.
Background technology
China's phosphorus ore with in low-grade be main, the content of magnesium is generally higher, in Wet-process Phosphoric Acid Production, the existence of magnesium can bring a series of adverse influences.Magnesium salts will be dissolved in the liquid phase phosphoric acid in Wet-process Phosphoric Acid Production, make system H
+Concentration reduces, and has influenced the reaction of phosphorus ore, simultaneously because Mg
2+Existence, crystal of calcium sulfate becomes elongated needle crystal, makes phosphogypsum filtering separation strength degradation, detersive efficiency reduces, the yield of phosphorus also decreases; In addition, the phosphoric acid magnesium content of producing is high, gives the following process deleterious impact of phosphoric acid.The method of removing magnesium in the at present domestic and international therefrom low-grade high-magnesium-phosphorus ore of popular is to remove the impurity that comprises magnesium in the phosphorus ore through the physical concentration method; Utilize the difference of different substances on physical properties; Adopt methods such as scrubbing-desliming, dense medium separation and positive reverse flotation that phosphorus ore is separated with impurity; These methods all need large-scale equipment, and facility investment is big, and cost is high.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides the device that therefrom low-grade high-magnesium-phosphorus ore reclaims magnesium that is used for that a kind of equipment is simple, cost is low.
To achieve these goals; The technical scheme of the utility model is following: a kind of device that is used for therefrom low-grade high-magnesium-phosphorus ore recovery magnesium; Comprise de-magnesium reaction groove, filter, stock tank, neutralization reaction groove, thickener, pressure filter and pneumatic dryer again; The discharge port of said de-magnesium reaction groove is communicated with the opening for feed of filter through pipeline, and the solid discharge port of said filter is communicated with stock tank again through rotary conveyor, and its discharge port of filtrating passes through pipeline and is communicated with the opening for feed of neutralization reaction groove; The discharge port of said neutralization reaction groove is communicated with the opening for feed of thickener through pipeline; The discharge port of said thickener is communicated with the opening for feed of pressure filter through pipeline, and the solid discharge port of said pressure filter is communicated with pneumatic dryer, and its liquid outlet opening passes through pipeline and is communicated with the opening for feed of stock tank again.
Adopt technique scheme; From the qualified phosphorus ore slurry (moisture 35%, fineness-100 order 85%) of ball milling workshop section thickener bottom, add in the de-magnesium reaction groove; In the de-magnesium reaction groove, add an amount of compound de-magging agent simultaneously; Carry out de-magnesium reaction, the slip of de-magnesium reaction is delivered to filter carries out solid-liquid separation and washing, the gained filter cake is that the phosphorus concentrate is delivered in the stock tank with rotary conveyor again.The gained first-time filtrate is delivered to the neutralization reaction groove, in the neutralization reaction groove, adds an amount of neutralizing agent (bicarbonate of ammonia, ammoniacal liquor or liquefied ammonia) simultaneously and carries out neutralization reaction generation magnesium ammonium phosphate slip.Slurry after the neutralization reaction sent into carry out settlement separately and concentrated in the thickener, thickener bottom underflow is sent into pressure filter and is carried out filtering separation, and the gained filter cake obtains magnesium ammonium phosphate slow-release fertilizer product after sending into the pneumatic dryer drying.Secondary press filtration filtrating is back to stock tank again, mixes with the phosphorus concentrate again slurry evenly after, deliver to phosphoric acid by wet process extraction plant production phosphoric acid.Adopt low-grade high-magnesium-phosphorus ore chemistry de-magging in this and reclaim the full scale plant of magnesium; The phosphorus ore demagnesium rate can reach 60～85%; Filtrating after the secondary press filtration is mixed slurry again with the phosphorus concentrate, secondary press filtration gained filter cake is the magnesium ammonium phosphate slow-release fertilizer, and the utilization ratio of phosphorus is near 100% in the ore.The utility model has the advantages that the plant area area is little, equipment is simple, the discharging of no waste water, waste residue; Environmental pollution is little; Match with wet-process phosphoric acid production plant, running cost is low, is the cleaned industry production equipment of a kind of economy, environmental protection and obvious social benefit.
Preferred as the utility model: the pipeline between the discharge port of said de-magnesium reaction groove and the opening for feed of filter is provided with mashing pump.
Preferred as the utility model: the pipeline between the filtrating discharge port of said filter and the opening for feed of neutralization reaction groove is provided with filtrate pump.
Preferred as the utility model: the pipeline between the discharge port of said thickener and the opening for feed of pressure filter is provided with underflow pump.
Preferred as the utility model: be distributed with the steam heat-exchanging sleeve pipe in the said neutralization reaction groove, import of said steam heat-exchanging telescopic and outlet are stretched out outside the neutralization reaction groove.
Preferred as the utility model: the shell upper edge at the top of said thickener circumferentially is distributed with riser, and this riser is communicated with the opening for feed of stock tank again through pipeline.
Preferred as the utility model: said filter is a ceramic vacuum filter.
Preferred as the utility model: said pressure filter is continuous vertical type blotter press.
Beneficial effect: the utility model is reasonable in design, floor space is little, equipment is simple, the discharging of no waste water, waste residue; Environmental pollution is little; Match with wet-process phosphoric acid production plant, running cost is low, is the cleaned industry production equipment of a kind of economy, environmental protection and obvious social benefit.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Embodiment 1; As shown in Figure 1; The utility model be used for device that therefrom low-grade high-magnesium-phosphorus ore reclaims magnesium mainly by de-magnesium reaction groove 1, mashing pump 2, filter 3, rotary conveyor 4, stock tank 5, filtrate pump 6, neutralization reaction groove 7, steam heat-exchanging sleeve pipe 8, Hhigh-efficient thickener 9 (having central tube, overflow weir and mud scraper), underflow pump 10, pressure filter 11 and pneumatic dryer 12 again; Said de-magnesium reaction groove 1, mashing pump 2, ceramic vacuum filter 3, rotary conveyor 4, again stock tank 5, filtrate pump 6, neutralization reaction groove 7, steam heat-exchanging sleeve pipe 8, Hhigh-efficient thickener 9 (having central tube, overflow weir and mud scraper), underflow pump 10, vertical type blotter press 11 and pneumatic dryer 12 etc. are existing equipment continuously, their structure is not done at this and is given unnecessary details.Wherein, be distributed with steam heat-exchanging sleeve pipe 8 in the said neutralization reaction groove 7, the import of said steam heat-exchanging sleeve pipe 8 and outlet are stretched out outside the neutralization reaction groove 7; The shell upper edge at the top of said thickener 9 circumferentially is distributed with riser 9a.Said de-magnesium reaction groove 1, be equipped with whisking appliance in stock tank 5 and the neutralization reaction groove 7 again.
The discharge port of said de-magnesium reaction groove 1 is communicated with the opening for feed of filter 3 through pipeline; This filter 3 is a ceramic vacuum filter; This ceramic vacuum filter is an existing installation, its structure is not given unnecessary details at this, on the pipeline between the opening for feed of the discharge port of de-magnesium reaction groove 1 and filter 3, is provided with mashing pump 2; The solid discharge port of said filter 3 is communicated with stock tank 5 again through rotary conveyor 4; Its filtrating discharge port is communicated with the opening for feed of neutralization reaction groove 7 through pipeline, on the pipeline between the opening for feed of filter 3 filtrating discharge ports and neutralization reaction groove 7, is provided with filtrate pump 6, and the discharge port of said neutralization reaction groove 7 is communicated with the opening for feed of thickener 9 through pipeline; The riser 9a of said thickener 9 is communicated with the opening for feed of stock tank 5 again through pipeline; The discharge port of said thickener 9 is communicated with the opening for feed of pressure filter 11 through pipeline, and this pressure filter 11 is continuous vertical type blotter press, on the pipeline between the opening for feed of the discharge port of thickener 9 and pressure filter 11, is provided with underflow pump 10; The solid discharge port of said pressure filter 11 is communicated with pneumatic dryer 12, and its liquid outlet opening is communicated with the opening for feed of stock tank 5 again through pipeline.
Qualified phosphorus ore slurry (moisture 35% from ball milling workshop section thickener bottom; Fineness-100 order 85%); Add and have in the de-magnesium reaction groove 1 of whisking appliance (n=300r/min.); In de-magnesium reaction groove 1, add an amount of compound de-magging agent simultaneously, liquid phase keeps reacting 2～3 hours under pH=3.0～4.0 and certain temperature (feeding saturation steam) condition.The slip of de-magnesium reaction is delivered to ceramic vacuum filter 3 carries out solid-liquid separation and washing, the gained filter cake is delivered in the stock tank 5 with rotary conveyor 4 for the phosphorus concentrate again.The gained first-time filtrate is delivered to the neutralization reaction groove 7 that has whisking appliance (n=200r/min.) through filtrate pump 6, adds an amount of neutralizing agent (bicarbonate of ammonia, ammoniacal liquor or liquefied ammonia), under pH=8.0～10.5 conditions, reacts 20～60 minutes, generates the magnesium ammonium phosphate slip.It is sent into the thickener 9 that has central tube, overflow weir and mud scraper carry out settlement separately and concentrated, the bottom underflow is fed through continuous vertical type blotter press 11 and carries out filtering separation, and the gained filter cake obtains magnesium ammonium phosphate slow-release fertilizer product after sending into pneumatic dryer 12 dryings.Secondary press filtration filtrating is back to the stock tank again 5 that has whisking appliance (n=300r/min.), mixes with the phosphorus concentrate again slurry evenly after, deliver to phosphoric acid by wet process extraction plant production phosphoric acid.
Claims (8)
1. one kind is used for the device that therefrom low-grade high-magnesium-phosphorus ore reclaims magnesium; It is characterized in that: comprise de-magnesium reaction groove (1), filter (3), stock tank (5), neutralization reaction groove (7), thickener (9), pressure filter (11) and pneumatic dryer (12) again; The discharge port of said de-magnesium reaction groove (1) is communicated with the opening for feed of filter (3) through pipeline; The solid discharge port of said filter (3) is communicated with stock tank (5) again through rotary conveyor (4); Its filtrating discharge port is communicated with the opening for feed of neutralization reaction groove (7) through pipeline; The discharge port of said neutralization reaction groove (7) is communicated with the opening for feed of thickener (9) through pipeline; The discharge port of said thickener (9) is communicated with the opening for feed of pressure filter (11) through pipeline, and the solid discharge port of said pressure filter (11) is communicated with pneumatic dryer (12), and its liquid outlet opening passes through pipeline and is communicated with the opening for feed of stock tank (5) again.
2. according to the said device that is used for therefrom low-grade high-magnesium-phosphorus ore recovery magnesium of claim 1, it is characterized in that: the pipeline between the opening for feed of the discharge port of said de-magnesium reaction groove (1) and filter (3) is provided with mashing pump (2).
3. according to claim 1 or the 2 said devices that are used for therefrom low-grade high-magnesium-phosphorus ore recovery magnesium, it is characterized in that: the pipeline between the opening for feed of the filtrating discharge port of said filter (3) and neutralization reaction groove (7) is provided with filtrate pump (6).
4. according to claim 1 or the 2 said devices that are used for therefrom low-grade high-magnesium-phosphorus ore recovery magnesium, it is characterized in that: the pipeline between the opening for feed of the discharge port of said thickener (9) and pressure filter (11) is provided with underflow pump (10).
5. according to claim 1 or the 2 said devices that are used for therefrom low-grade high-magnesium-phosphorus ore recovery magnesium; It is characterized in that: be distributed with steam heat-exchanging sleeve pipe (8) in the said neutralization reaction groove (7), the import of said steam heat-exchanging sleeve pipe (8) and outlet are stretched out outside the neutralization reaction groove (7).
6. according to claim 1 or the 2 said devices that are used for therefrom low-grade high-magnesium-phosphorus ore recovery magnesium; It is characterized in that: the shell upper edge at the top of said thickener (9) circumferentially is distributed with riser (9a), and this riser (9a) is communicated with the opening for feed of stock tank (5) again through pipeline.
7. according to claim 1 or the 2 said devices that are used for therefrom low-grade high-magnesium-phosphorus ore recovery magnesium, it is characterized in that: said filter (3) is a ceramic vacuum filter.
8. according to claim 1 or the 2 said devices that are used for therefrom low-grade high-magnesium-phosphorus ore recovery magnesium, it is characterized in that: said pressure filter (11) is continuous vertical type blotter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202406092U CN202610300U (en) | 2012-05-25 | 2012-05-25 | Device for recovering magnesium from mid/low-grade high-magnesium phosphate rocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202406092U CN202610300U (en) | 2012-05-25 | 2012-05-25 | Device for recovering magnesium from mid/low-grade high-magnesium phosphate rocks |
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| Publication Number | Publication Date |
|---|---|
| CN202610300U true CN202610300U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202406092U Expired - Lifetime CN202610300U (en) | 2012-05-25 | 2012-05-25 | Device for recovering magnesium from mid/low-grade high-magnesium phosphate rocks |
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| CN (1) | CN202610300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748705A (en) * | 2020-06-30 | 2020-10-09 | 长沙矿冶研究院有限责任公司 | Method for extracting rare earth elements from deep sea sediments |
| CN113800956A (en) * | 2021-10-27 | 2021-12-17 | 湖北祥云(集团)化工股份有限公司 | Method and device for producing calcium magnesium phosphate fertilizer by removing magnesium clear liquid |
-
2012
- 2012-05-25 CN CN2012202406092U patent/CN202610300U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748705A (en) * | 2020-06-30 | 2020-10-09 | 长沙矿冶研究院有限责任公司 | Method for extracting rare earth elements from deep sea sediments |
| CN113800956A (en) * | 2021-10-27 | 2021-12-17 | 湖北祥云(集团)化工股份有限公司 | Method and device for producing calcium magnesium phosphate fertilizer by removing magnesium clear liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SINOFERT LIMITED Free format text: FORMER OWNER: CHONGQING PHOSPHATE COMPOUND FERTILIZER ENGINEERING TECHNOLOGY RESEARCH CENTER OF SINOFERT CO., LTD. Effective date: 20150317 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 408000 FULING, CHONGQING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150317 Address after: 100031 Beijing city Xicheng District fuxingmennei Street 28, Chemsunny World Trade Center in the 10 blocks Patentee after: Sinofert Holding Limited Address before: 408000 Chongqing Road, Fuling District No. 2 Patentee before: Chongqing Phosphate & Compound Fertilizer Engineering Technology Research Center of Sinofert Holdings Limited |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |