CN104190143A - Filtering device capable of reducing water-soluble phosphorus of gypsum filter cake in phosphoric-acid production - Google Patents
Filtering device capable of reducing water-soluble phosphorus of gypsum filter cake in phosphoric-acid production Download PDFInfo
- Publication number
- CN104190143A CN104190143A CN201410434626.3A CN201410434626A CN104190143A CN 104190143 A CN104190143 A CN 104190143A CN 201410434626 A CN201410434626 A CN 201410434626A CN 104190143 A CN104190143 A CN 104190143A
- Authority
- CN
- China
- Prior art keywords
- filter
- rake teeth
- soluble phosphorus
- acid production
- filter cake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a filtering device capable of reducing water-soluble phosphorus of gypsum filter cake in phosphoric-acid production. The filtering device comprises a vacuum filter, wherein a secondary washing distribution box is arranged above a filter disc of the vacuum filter; rake tooth equipment is arranged at the lower part of the secondary washing distribution box and comprises a rake tooth fixing rack, rake tooth racks and a rack stopper; the rake tooth fixing rack is fixedly arranged on the side wall of the front surface of the secondary washing distribution box along the radial direction of the filter disc; multiple rake tooth racks are vertically and uniformly arranged on the rake tooth fixing rack; the rack stopper parallel to the rake tooth racks is arranged on the rake tooth fixing rack; a support frame is arranged above the filter disc at the position, which is close to the side wall of the back surface of the secondary washing distribution box along the radial direction of the filter disc; a belt is arranged on the support frame; and the bottom of the belt is in contact with the filter disc. According to the invention, high penetration rate of the filter cake can be realized from the feeding process to the spiral discharging process of the filter, and the content of water-soluble phosphorus on the deep layer of the filter cake is reduced, so that the content of water-soluble phosphorus in gypsum phosphorus loss is reduced from 0.5 percent to 0.3 percent.
Description
Technical field
The invention belongs to phosphoric acid production field, be specifically related to can reduce in a kind of phosphoric acid production the filter of gypsum filter cake water-soluble phosphorus.
Background technology
In traditional phosphoric acid production technique, the slip being generated by phosphorus ore and sulfuric acid reaction need carry out Separation of Solid and Liquid through filter plant, and qualified finished acid tank sending district is stored; Filter cake after suction filtration contains part water-soluble phosphorus, needs water to carry out one-level following current washing and secondary or the washing of three stage countercurrents, makes as far as possible the water-soluble phosphorus in filter cake all reclaim.Due to the existence of fine impurities phosphate crystal in slip, the filter cloth eyelet that filter plant is used is easily blocked, cause from the process of expecting screw unloading of filter, the transmitance of filter cake reduces gradually, cake layer is more closely knit, the water-soluble phosphorus content of filter cake deep layer is raise, cause the rate of recovery of device phosphorus to reduce.
Summary of the invention
The object of the invention is in order to solve technical problem of the prior art, provide a kind of simple in structure, easy to operate, in phosphoric acid production, can reduce the filter of gypsum filter cake water-soluble phosphorus.
In order to achieve the above object, the present invention is by the following technical solutions: the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production, comprise vacuum filter, the filter disc top of described vacuum filter is provided with secondary washing distribution case, the bottom of described secondary washing distribution case is provided with rake teeth equipment, described rake teeth equipment comprises rake teeth fixed mount, rake teeth tooth bar and tooth bar skin block, described rake teeth fixed mount is fixedly installed on secondary washing distribution case along on filter disc front sidewall radially, on described rake teeth fixed mount, Vertical Uniform is provided with multiple rake teeth tooth bars, on described rake teeth fixed mount, be also provided with the tooth bar skin block parallel with rake teeth tooth bar, described filter disc top is provided with bracing frame near secondary washing distribution case along filter disc back side side-walls radially, support frame as described above is provided with belt, described belt bottom contacts with filter disc.
Further, the width of described rake teeth tooth bar is 2-5mm, and the distance between described rake teeth tooth bar and filter disc is 15mm.
Further, described rake teeth tooth bar spacing distance is 20mm.
Further, described thickness of belt is 6-10mm.
Further, between described rake teeth fixed mount and the endless-belt of vacuum filter, distance is 20mm.
Further, described vacuum filter is rotary table type vacuum filter.
Further, described rake teeth fixed mount and the welding of secondary washing distribution case.
Further, described rake teeth fixed mount and secondary washing distribution case are bolted.
Further, the length of support frame as described above is identical with the length of secondary washing distribution case.
The relative prior art of the present invention has following beneficial effect: the present invention is by being provided with rake teeth equipment in the bottom of secondary washing distribution case, rake teeth equipment comprises rake teeth fixed mount, rake teeth tooth bar and tooth bar skin block, filter disc top is provided with belt and belt bottom contacts with filter disc, rotate at rotary table type vacuum filter, when filter cake on filter disc passes through rake teeth equipment, first can form on filter cake surface the gully of certain depth, water in secondary washing distribution case washs filter cake, filter cake bottom water-soluble phosphorus is further washed, gully can be polished by secondary during through tooth bar skin block below of rake teeth tooth bar, tooth bar skin block, between belt and filter disc, form the space of sealing, ensure the stable of vacuum.The present invention is from the process of expecting screw unloading of filter, and the transmitance of filter cake is high, and the water-soluble phosphorus content of filter cake deep layer reduces, can make gypsum phosphorus damage in water-soluble phosphorus be down to 0.3% by original 0.5%, the rate of recovery of phosphorus is high.The present invention has good use value and economic benefit.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of belt of the present invention;
Fig. 3 is rake teeth equipment front view of the present invention.
Reference numeral implication is as follows: 1, vacuum filter; 2, filter disc; 3, secondary washing distribution case; 4, rake teeth fixed mount; 5, rake teeth tooth bar; 6, tooth bar skin block; 7, bracing frame; 8, belt; 9, endless-belt.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As Figure 1-3, in a kind of phosphoric acid production, can reduce the filter of gypsum filter cake water-soluble phosphorus, comprise vacuum filter 1, vacuum filter 1 is rotary table type vacuum filter, filter disc 2 tops of vacuum filter 1 are provided with secondary washing distribution case 3, the bottom of secondary washing distribution case 3 is provided with rake teeth equipment, rake teeth equipment comprises rake teeth fixed mount 4, rake teeth tooth bar 5 and tooth bar skin block 6, rake teeth fixed mount 4 is fixedly installed on secondary washing distribution case 3 along on filter disc 2 front sidewall radially, rake teeth fixed mount 4 welds or is bolted with secondary washing distribution case 3, on rake teeth fixed mount 4, Vertical Uniform is provided with multiple rake teeth tooth bars 5, the width of rake teeth tooth bar 5 is 2-5mm, distance between rake teeth tooth bar 5 and filter disc 2 is 15mm, rake teeth tooth bar 5 spacing distances are 20mm, on rake teeth fixed mount 4, be also provided with the tooth bar skin block 6 parallel with rake teeth tooth bar 5, filter disc 2 tops are provided with bracing frame 7 near secondary washing distribution case 3 along filter disc 2 back side side-walls radially, bracing frame 7 is provided with belt 8, belt 8 bottoms contact with filter disc 2, belt 8 thickness are 6-10mm, the length of bracing frame 7 is identical with the length of secondary washing distribution case 3, between the endless-belt 9 of rake teeth fixed mount 4 and vacuum filter 1, distance is 20mm.
Rotate at rotary table type vacuum filter, when filter cake on filter disc 2 passes through rake teeth equipment, first can form on filter cake surface the gully of certain depth, water in secondary washing distribution case 3 washs filter cake, filter cake bottom water-soluble phosphorus is further washed, gully can be polished by secondary during through tooth bar skin block 6 below of rake teeth tooth bar 5, forms the space of sealing between tooth bar skin block 6, belt 8 and filter disc 2, has ensured stablizing of vacuum.The present invention is from the process of expecting screw unloading of vacuum filter 1, and the transmitance of filter cake is high, and the water-soluble phosphorus content of filter cake deep layer reduces, can make gypsum phosphorus damage in water-soluble phosphorus be down to 0.3% by original 0.5%, the rate of recovery of phosphorus is high.
Claims (9)
1. in a phosphoric acid production, can reduce the filter of gypsum filter cake water-soluble phosphorus, comprise vacuum filter (1), filter disc (2) top of described vacuum filter (1) is provided with secondary washing distribution case (3), it is characterized in that: the bottom of described secondary washing distribution case (3) is provided with rake teeth equipment, described rake teeth equipment comprises rake teeth fixed mount (4), rake teeth tooth bar (5) and tooth bar skin block (6), described rake teeth fixed mount (4) is fixedly installed on secondary washing distribution case (3) along on filter disc (2) front sidewall radially, the upper Vertical Uniform of described rake teeth fixed mount (4) is provided with multiple rake teeth tooth bars (5), on described rake teeth fixed mount (4), be also provided with the tooth bar skin block (6) parallel with rake teeth tooth bar (5), described filter disc (2) top is provided with bracing frame (7) near secondary washing distribution case (3) along filter disc (2) back side side-walls radially, support frame as described above (7) is provided with belt (8), described belt (8) bottom contacts with filter disc (2).
2. the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production according to claim 1, is characterized in that: the width of described rake teeth tooth bar (5) is 2-5mm, the distance between described rake teeth tooth bar (5) and filter disc (2) is 15mm.
3. the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production according to claim 1, is characterized in that: described rake teeth tooth bar (5) spacing distance is 20mm.
4. the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production according to claim 1, is characterized in that: described belt (8) thickness is 6-10mm.
5. the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production according to claim 1, is characterized in that: between described rake teeth fixed mount (4) and the endless-belt (9) of vacuum filter (1), distance is 20mm.
6. the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production according to claim 1, is characterized in that: described vacuum filter (1) is rotary table type vacuum filter.
7. the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production according to claim 1, is characterized in that: described rake teeth fixed mount (4) and secondary washing distribution case (3) welding.
8. the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production according to claim 1, is characterized in that: described rake teeth fixed mount (4) is bolted with secondary washing distribution case (3).
9. the filter that can reduce gypsum filter cake water-soluble phosphorus in a kind of phosphoric acid production according to claim 1, is characterized in that: the length of support frame as described above (7) is identical with the length of secondary washing distribution case (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434626.3A CN104190143B (en) | 2014-08-29 | 2014-08-29 | In a kind of phosphoric acid production, can reduce the filter of gypsum filter cake water-soluble phosphorus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434626.3A CN104190143B (en) | 2014-08-29 | 2014-08-29 | In a kind of phosphoric acid production, can reduce the filter of gypsum filter cake water-soluble phosphorus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104190143A true CN104190143A (en) | 2014-12-10 |
| CN104190143B CN104190143B (en) | 2016-05-11 |
Family
ID=52075596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410434626.3A Expired - Fee Related CN104190143B (en) | 2014-08-29 | 2014-08-29 | In a kind of phosphoric acid production, can reduce the filter of gypsum filter cake water-soluble phosphorus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104190143B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116747591A (en) * | 2023-08-22 | 2023-09-15 | 山西林海腐植酸科技有限公司 | Humic acid production filter equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004291036A (en) * | 2003-03-27 | 2004-10-21 | Tomoe Engineering Co Ltd | Rotary pressure dewatering machine having multiple scrapers |
| CN201370999Y (en) * | 2009-03-11 | 2009-12-30 | 西玛(常州)通用设备有限公司 | Overflow-type filter cake washing device for vacuum pan filter |
| CN201855612U (en) * | 2010-11-11 | 2011-06-08 | 攀钢集团钢铁钒钛股份有限公司 | Dip lotion distribution device of vacuum belt type filter and vacuum belt type filter |
| CN202237496U (en) * | 2011-07-28 | 2012-05-30 | 洛阳市豫瑞机械制造有限公司 | Multilayer horizontal disk filter |
| CN204093154U (en) * | 2014-08-29 | 2015-01-14 | 甘肃瓮福化工有限责任公司 | The filter of gypsum filter cake water-soluble phosphorus can be reduced in a kind of phosphoric acid production |
-
2014
- 2014-08-29 CN CN201410434626.3A patent/CN104190143B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004291036A (en) * | 2003-03-27 | 2004-10-21 | Tomoe Engineering Co Ltd | Rotary pressure dewatering machine having multiple scrapers |
| CN201370999Y (en) * | 2009-03-11 | 2009-12-30 | 西玛(常州)通用设备有限公司 | Overflow-type filter cake washing device for vacuum pan filter |
| CN201855612U (en) * | 2010-11-11 | 2011-06-08 | 攀钢集团钢铁钒钛股份有限公司 | Dip lotion distribution device of vacuum belt type filter and vacuum belt type filter |
| CN202237496U (en) * | 2011-07-28 | 2012-05-30 | 洛阳市豫瑞机械制造有限公司 | Multilayer horizontal disk filter |
| CN204093154U (en) * | 2014-08-29 | 2015-01-14 | 甘肃瓮福化工有限责任公司 | The filter of gypsum filter cake water-soluble phosphorus can be reduced in a kind of phosphoric acid production |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116747591A (en) * | 2023-08-22 | 2023-09-15 | 山西林海腐植酸科技有限公司 | Humic acid production filter equipment |
| CN116747591B (en) * | 2023-08-22 | 2023-10-24 | 山西林海腐植酸科技有限公司 | Humic acid production filter equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104190143B (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202844661U (en) | Filter device for electrolyte | |
| CN202322954U (en) | Rare-earth feed liquid deoiling device | |
| CN104190143B (en) | In a kind of phosphoric acid production, can reduce the filter of gypsum filter cake water-soluble phosphorus | |
| CN204093154U (en) | The filter of gypsum filter cake water-soluble phosphorus can be reduced in a kind of phosphoric acid production | |
| CN205760025U (en) | A kind of active carbon filtering device | |
| CN203886906U (en) | Adjusting device of drawing flue | |
| CN204281644U (en) | A kind of desalination plant for propylene glycol production system | |
| CN203498507U (en) | Single crystal leftover material cleaning basket | |
| CN203140154U (en) | Impurity removing device of iron phosphate | |
| CN205274664U (en) | Cassette assembly device | |
| CN206810237U (en) | A kind of autocatalysis oxidation unit | |
| CN203080070U (en) | Copper strip oxidation layer removing device for photovoltaic modules | |
| CN201750628U (en) | Solution tank for processing printed circuit board (PCB) | |
| CN204470203U (en) | A kind of iron filings separator of bearing cleaning machine | |
| CN205095495U (en) | Filter -pressing jar for phosphorus removal pool | |
| CN203569166U (en) | Molten aluminium filter device | |
| CN104529003A (en) | Waste acid regeneration device | |
| CN204661828U (en) | A kind of full-automatic etching solution retrieving arrangement | |
| CN204710008U (en) | A kind of bubble dust collector | |
| CN203320157U (en) | Automatic electrolytic manganese stripping device with unloading plate frame | |
| CN204400736U (en) | A kind of acid regeneration equipment | |
| CN203589555U (en) | Antiskid drawer assembly | |
| CN202844660U (en) | Filter device for electrolyte | |
| CN204699487U (en) | A kind of folded plate type filtration system | |
| CN113279014B (en) | Direct slot production process for lifting non-standard anode plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20180829 |