CN104307814A - On-line clearing method of dilute acid pipe scales in phosphate ore magnesium-removing and ore-dressing production - Google Patents
On-line clearing method of dilute acid pipe scales in phosphate ore magnesium-removing and ore-dressing production Download PDFInfo
- Publication number
- CN104307814A CN104307814A CN201410434644.1A CN201410434644A CN104307814A CN 104307814 A CN104307814 A CN 104307814A CN 201410434644 A CN201410434644 A CN 201410434644A CN 104307814 A CN104307814 A CN 104307814A
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- China
- Prior art keywords
- ore
- magnesium
- dilute acid
- diluted acid
- line clearing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/007—Heating the liquid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention aims to provide an on-line clearing method of dilute acid pipe scales in phosphate ore magnesium-removing and ore-dressing production and solves the problem in the prior art that the manual cleaning of a dilute acid pipe is time-consuming and labor-consuming in the phosphate ore magnesium-removing and ore-dressing production. The on-line clearing method comprises the following steps: configuring cleaning liquid composed of sulfuric acid and water in a dilute acid configuration tank, wherein the volume ratio of the sulfuric acid to the water is 1:(5-20); then introducing low-pressure steam in the dilute acid configuration tank to heat; conveying the heated cleaning liquid into a dilute acid pipe by using a conveying pump to clean under the situation of no parking. The on-line clearing method has the benefits that the on-line clearing of the scales is realized, no pipe needs to be disassembled, no investment is required, the maneuverability is realized, and no extra equipment needs to be arranged; the scale removal is more obvious, the cleaning is required once a month, and time and labor are saved.
Description
Technical field
The present invention relates to beneficiated phosphate ore field, be specifically related to the online sweep-out method of diluted acid pipeline scale in a kind of removal of magnesium from phosphorous ore mineral processing production.
Background technology
Beneficiated phosphate ore demagging is one of main beneficiation method of modern phosphorus ammonium production industry.Beneficiation method adopts usually " reverse flotation ", and method carries out ore dressing, ore dressing uses gypsum stack backwater dilute sulphuric acid as floatation regulator ore dressing, and containing a large amount of foreign ion such as a large amount of Ca, Mg, Fe, Al, Si etc. in gypsum stack backwater, generate complicated double salt with sulfuric acid reaction and be attached to duct wall, cause serious scale in pipeline, cause adjusting agent changes in flow rate, affect flotation effect.In order to remove fouling, traditional way is that pipeline is dismantled off-line, manually removes, obvious this method time and effort consuming.
Summary of the invention
The object of this invention is to provide the online sweep-out method of diluted acid pipeline scale in a kind of removal of magnesium from phosphorous ore mineral processing production, diluted acid pipeline manual cleaning in removal of magnesium from phosphorous ore mineral processing production be time-consuming to solve in prior art, the problem of effort.
For this reason, the present invention adopts following technical scheme: the online sweep-out method of diluted acid pipeline scale in a kind of removal of magnesium from phosphorous ore mineral processing production, comprises the steps:
A, in diluted acid configured slot, configure the cleaning fluid be made up of sulfuric acid, water, its sulfuric acid: the volume ratio of water is 1:5 ~ 20;
Low-pressure steam heating is passed in B, diluted acid configured slot in step;
C, when not stopping, step B gained cleaning fluid delivery pump being sent into diluted acid pipeline and cleans.
Further, the pressure of described step B low pressure steam is 0.3 ~ 0.5Mpa, and heating-up temperature is 40 ~ 60 DEG C.
Further, in described step C, scavenging period is 12 ~ 26h.
The invention has the beneficial effects as follows: realize removing fouling online, need not pipeline be dismantled, without investment, maneuverability, without the need to increasing equipment; Scale removal is comparatively obvious, monthly only need clean once, time saving and energy saving.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
In figure: 1, diluted acid configured slot, 2, delivery pump, 3, diluted acid pipeline.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further details.
Embodiment 1
An online sweep-out method for diluted acid pipeline scale in removal of magnesium from phosphorous ore mineral processing production, the cleaning fluid that configuration is 98% by mass fraction in diluted acid configured slot 1 sulfuric acid, water form, its sulfuric acid: the volume ratio of water is 1:5; Then in diluted acid configured slot 1, pass into the low-pressure steam heating that pressure is 0.3 Mpa, heating-up temperature is 40 DEG C; When not stopping, the cleaning fluid delivery pump 2 after heating is sent into diluted acid pipeline 3 and cleans, scavenging period is 20 h.
Embodiment 2
An online sweep-out method for diluted acid pipeline scale in removal of magnesium from phosphorous ore mineral processing production, the cleaning fluid that configuration is 98% by mass fraction in diluted acid configured slot 1 sulfuric acid, water form, its sulfuric acid: the volume ratio of water is 1:15; Then in diluted acid configured slot 1, pass into the low-pressure steam heating that pressure is 0.4 Mpa, heating-up temperature is 50 DEG C; When not stopping, the cleaning fluid delivery pump 2 after heating is sent into diluted acid pipeline 3 and cleans, scavenging period is 22 h.
Embodiment 3
An online sweep-out method for diluted acid pipeline scale in removal of magnesium from phosphorous ore mineral processing production, the cleaning fluid that configuration is 98% by mass fraction in diluted acid configured slot 1 sulfuric acid, water form, its sulfuric acid: the volume ratio of water is 1:20; Then in diluted acid configured slot 1, pass into the low-pressure steam heating that pressure is 0.5 Mpa, heating-up temperature is 60 DEG C; When not stopping, the cleaning fluid delivery pump 2 after heating is sent into diluted acid pipeline 3 and cleans, scavenging period is 18 h.
The 800000 tons/year of phosphorus concentrate flotation of ore dressing subsidiary factory of Gansu Gengfu Chemistry Co., Ltd. are produced, and before not adopting this method to clean, diluted acid pipeline flow can only reach 15M
3/ h, after adopting this method to ore-dressing plant diluted acid pipeline, cleaning performance statistics is as shown in Table 1,
Table one
Table one shows, and after using this method, diluted acid pipeline flow reaches original about 2 times, substantially reduces clearance time.
Claims (3)
1. the online sweep-out method of diluted acid pipeline scale in removal of magnesium from phosphorous ore mineral processing production, is characterized in that comprising the steps:
A, in diluted acid configured slot, configure the cleaning fluid be made up of sulfuric acid, water, its sulfuric acid: the volume ratio of water is 1:5 ~ 20;
Low-pressure steam heating is passed in B, diluted acid configured slot in step;
C, when not stopping, step B gained cleaning fluid delivery pump being sent into diluted acid pipeline and cleans.
2. the online sweep-out method of diluted acid pipeline scale in a kind of removal of magnesium from phosphorous ore mineral processing production as claimed in claim 1, is characterized in that: the pressure of described step B low pressure steam is 0.3 ~ 0.5Mpa, and heating-up temperature is 40 ~ 60 DEG C.
3. the online sweep-out method of diluted acid pipeline scale in a kind of removal of magnesium from phosphorous ore mineral processing production as claimed in claim 1, is characterized in that: in described step C, scavenging period is 12 ~ 26 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434644.1A CN104307814A (en) | 2014-08-29 | 2014-08-29 | On-line clearing method of dilute acid pipe scales in phosphate ore magnesium-removing and ore-dressing production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434644.1A CN104307814A (en) | 2014-08-29 | 2014-08-29 | On-line clearing method of dilute acid pipe scales in phosphate ore magnesium-removing and ore-dressing production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104307814A true CN104307814A (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410434644.1A Pending CN104307814A (en) | 2014-08-29 | 2014-08-29 | On-line clearing method of dilute acid pipe scales in phosphate ore magnesium-removing and ore-dressing production |
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| CN (1) | CN104307814A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234133A (en) * | 2015-11-05 | 2016-01-13 | 广东溢达纺织有限公司 | Cleaning method and system of chemical material device and chemical material device with automatic cleaning function |
| CN107900000A (en) * | 2017-11-09 | 2018-04-13 | 山东中烟工业有限责任公司 | A kind of cigarette process air-conditioning Air-water Humidifying nozzle quick descaling method |
| CN113385492A (en) * | 2020-06-12 | 2021-09-14 | 湖北大峪口化工有限责任公司 | Cleaning method for phosphogypsum slag yard water return pipeline |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004321119A (en) * | 2003-04-28 | 2004-11-18 | Orion Mach Co Ltd | Mechanism for cleaning pipeline of milking apparatus |
| CN101476128A (en) * | 2008-12-24 | 2009-07-08 | 瓮福（集团）有限责任公司 | Method for descaling phosphoric acid conveying pipeline |
| CN102808193A (en) * | 2012-08-30 | 2012-12-05 | 贵州开磷（集团）有限责任公司 | Cleaning method of phosphoric acid delivery pipeline |
| EP2612714A1 (en) * | 2010-08-30 | 2013-07-10 | Mitsubishi Heavy Industries Food & Packaging Machinery Co., Ltd. | Instrument-cleaning method that uses soaking with nanobubble water |
| CN103303890A (en) * | 2013-07-04 | 2013-09-18 | 瓮福（集团）有限责任公司 | Online reflux rinsing method for tubular reactor |
| CN203425679U (en) * | 2013-08-30 | 2014-02-12 | 晶旺光电（徐州）有限公司 | Ammonia gas washing tower facilitating cleaning of internal gas pipelines |
-
2014
- 2014-08-29 CN CN201410434644.1A patent/CN104307814A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004321119A (en) * | 2003-04-28 | 2004-11-18 | Orion Mach Co Ltd | Mechanism for cleaning pipeline of milking apparatus |
| CN101476128A (en) * | 2008-12-24 | 2009-07-08 | 瓮福（集团）有限责任公司 | Method for descaling phosphoric acid conveying pipeline |
| EP2612714A1 (en) * | 2010-08-30 | 2013-07-10 | Mitsubishi Heavy Industries Food & Packaging Machinery Co., Ltd. | Instrument-cleaning method that uses soaking with nanobubble water |
| CN102808193A (en) * | 2012-08-30 | 2012-12-05 | 贵州开磷（集团）有限责任公司 | Cleaning method of phosphoric acid delivery pipeline |
| CN103303890A (en) * | 2013-07-04 | 2013-09-18 | 瓮福（集团）有限责任公司 | Online reflux rinsing method for tubular reactor |
| CN203425679U (en) * | 2013-08-30 | 2014-02-12 | 晶旺光电（徐州）有限公司 | Ammonia gas washing tower facilitating cleaning of internal gas pipelines |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234133A (en) * | 2015-11-05 | 2016-01-13 | 广东溢达纺织有限公司 | Cleaning method and system of chemical material device and chemical material device with automatic cleaning function |
| CN107900000A (en) * | 2017-11-09 | 2018-04-13 | 山东中烟工业有限责任公司 | A kind of cigarette process air-conditioning Air-water Humidifying nozzle quick descaling method |
| CN113385492A (en) * | 2020-06-12 | 2021-09-14 | 湖北大峪口化工有限责任公司 | Cleaning method for phosphogypsum slag yard water return pipeline |
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Application publication date: 20150128 |
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