CN104990825B - A kind of measuring method of the ash-retention efficiency of heavy scummer - Google Patents
A kind of measuring method of the ash-retention efficiency of heavy scummer Download PDFInfo
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- CN104990825B CN104990825B CN201510365626.7A CN201510365626A CN104990825B CN 104990825 B CN104990825 B CN 104990825B CN 201510365626 A CN201510365626 A CN 201510365626A CN 104990825 B CN104990825 B CN 104990825B
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Abstract
The present invention relates to pulp technology for making paper, and in particular to a kind of measuring method of the ash-retention efficiency of heavy scummer, comprises the following steps：Step A, sample：M is weighed with weighing equipment1Gram enter to starch sample, M2Gram good slurry sample and M3Gram slurry sample, save backup；Step B, the measurement of concetration of sample：Each sample of separation of solid and liquid, isolated solid is placed in baking oven and is dried to constant weight, and weighs the quality m recorded into after isolated solid drying to the constant weight of slurry sample, good slurry sample, slurry sample respectively1、m2、m3, then calculated and measured into slurry sample solution concentration C respectively by concentration formula C=m/MEnter, good slurry sample solution concentration CIt is good, slurry sample solution concentration CSlag；Step C, ash-retention efficiency calculates：Pass through formula CT=CSlag/CEnterTry to achieve enrichment factor CT, finally by formula S=（CSlag‑CIt is good×CT）/(CSlag‑CIt is good) × 100% measures the ash-retention efficiency S of heavy scummer.Technical solution of the present invention is simple, required time of measuring is short, accuracy of measurement is high.
Description
Technical field
The present invention relates to pulp technology for making paper, and in particular to a kind of measuring method of the ash-retention efficiency of heavy scummer.
Background technology
In paper industry, heavy scummer is to remove granule foreign heavier in secondary stock（Such as tiny ash content, dust
Particle）Nucleus equipment, be widely used in various waste paper pulps（Including OCC, DIP）Production.It is accordingly, it is capable to no correct, quick
The operational efficiency of heavy scummer is assessed on ground, directly affects paper mill production efficiency and product quality.Assess heavy scummer
Operational efficiency when, particularly important technical parameter is the ash-retention efficiency of heavy scummer, still, traditional heavy slagging-off
The measuring method of the ash-retention efficiency of device needs to measure heavy scummer and enters to starch concentration CEnter, it is good slurry exit good slurry concentration CIt is good, row
The slurry concentration C of cinder notchSlag, slurry flow FSlag, enter to starch flow FEnterAnd pressure difference-flow curve of heavy scummer, then according to upper
The data stated are set up linear equation in two unknowns and parsed, and finally give ash-retention efficiency calculation formula：
,
Further according to the formula calculate ash-retention efficiency assess heavy scummer operational efficiency, still, the measuring method it is tediously long it is numerous and diverse,
Elapsed time is long, result of calculation is inaccurate.
The content of the invention
In order to overcome shortcoming and defect present in prior art, it is an object of the invention to provide a kind of heavy scummer
Ash-retention efficiency measuring method, technical solution of the present invention is simple, required time of measuring is short, accuracy of measurement is high.
The purpose of the present invention is achieved through the following technical solutions：A kind of measuring method of the ash-retention efficiency of heavy scummer, bag
Include following steps：
Step A, sample：Sampled using sample cock in the stock inlet of scummer, good slurry outlet and slurry exit, with title
Amount equipment weighs M1Gram enter to starch sample, M2Gram good slurry sample and M3Gram slurry sample, save backup；
Step B, the measurement of concetration of sample：Each sample of separation of solid and liquid, isolated solid is placed in baking oven and is dried to
Constant weight, and the quality recorded into after isolated solid drying to the constant weight of slurry sample, good slurry sample, slurry sample is weighed respectively
m1、m2、m3, then calculated and measured into slurry sample solution concentration C respectively by concentration formula C=m/MEnter, good slurry sample solution concentration CIt is good, slurry examination
Sample concentration CSlag；
Step C, ash-retention efficiency calculates：Pass through formula CT=CSlag/CEnterTry to achieve enrichment factor CT, finally by formula S=（CSlag-CIt is good×
CT）/(CSlag-CIt is good) × 100% measures the ash-retention efficiency S of heavy scummer.
The present invention need not measure the flow into slurry, good slurry and slurry, it is only necessary to measure the concentration into slurry, good slurry and slurry
The ash-retention efficiency of heavy scummer can be drawn by data processing, scheme is simple, and required time of measuring is short, efficiency high, and passes through
The ash-retention efficiency of heavy scummer is directly calculated in concentration, and intuitively, the degree of accuracy is high.
Wherein, the flow that enters to starch of scummer is FEnter, the good slurry flow of scummer is FIt is good,The slurry flow of scummer is FSlag,
Then：
FEnter=FIt is good+FSlag、FEnter×CEnter=FIt is good×CIt is good+FSlag×CSlag,
→ → →
→ → =ash-retention efficiency,
So ash-retention efficiency==。
Wherein, the weighing equipment is the electronic balance that precision is 0.01g.Electronic balance precision is high, and it is accurate to weigh, deslagging
The degree of accuracy of rate measurement result is high.
Wherein, it is described to enter to starch sample, good slurry sample, the mass M of slurry sample1、M2、M3It is 25g.Meeting to measure need
On the premise of asking, by sample sampling quality control in rational scope, the waste of resource is avoided.
Wherein, equipment is bottle,suction used by separation of solid and liquid.In the actual use of the present invention, first funnel is sealed and pacified
It on bottle,suction, then will be attached to dry filter paper in funnel, start air exhauster, realize separation of solid and liquid.Consolidated by bottle,suction
Liquid separating sample, speed is fast, and solid separation is abundant, ensure that the degree of accuracy for measuring ash-retention efficiency.
Wherein, the suction filtration time that the bottle,suction carries out separation of solid and liquid is 11-15min.Proper extension filters the time, to the greatest extent may be used
The moisture in solid can be reduced, shortens the drying time of baking oven, improves efficiency.
Wherein, the drying temperature of the baking oven is 125-145C °, drying time 30-35min.Drying temperature and drying
Time is reasonable in design, and solid is dried thoroughly, avoids containing moisture among sample, so as to influence the degree of accuracy of ash-retention efficiency measurement..
Wherein, the group number of each sample is 5 groups, and the ash-retention efficiency is remaining each group after 5 groups of samples remove invalid group
The average value of sample measurement result.Using multigroup sampling, the invalid group of measuring method averaged is removed, ensure that data has
Effect property and the degree of accuracy.
Wherein, in the step B, the environment temperature for weighing record is 21-25C °, humidity 8-10%.Under low-moisture conditions
Dried solid is weighed, avoids ambient humidity too high, the moisture in solid sorbent environment, reduces measurement error, improves measurement
The degree of accuracy.
The beneficial effects of the present invention are：The present invention need not measure the flow into slurry, good slurry and slurry, reduce measurement
The amount of data, significantly shortens time of measuring, improves operating efficiency, it is only necessary to measures the concentration into slurry, good slurry and slurry
The ash-retention efficiency of heavy scummer can be drawn by data processing, scheme is simple, and required time of measuring is short, efficiency high, and passes through
The ash-retention efficiency of heavy scummer is directly calculated in concentration, and intuitively, the degree of accuracy is high.
Embodiment
For the ease of the understanding of those skilled in the art, with reference to embodiment, the present invention is further illustrated, real
The content that the mode of applying refers to not is limitation of the invention.
Embodiment 1
A kind of measuring method of the ash-retention efficiency of heavy scummer, comprises the following steps：
Step A, sample：Sampled using sample cock in the stock inlet of scummer, good slurry outlet and slurry exit, with title
Amount equipment weighs M1Gram enter to starch sample, M2Gram good slurry sample and M3Gram slurry sample, save backup；
Step B, the measurement of concetration of sample：Each sample of separation of solid and liquid, isolated solid is placed in baking oven and is dried to
Constant weight, and the quality recorded into after isolated solid drying to the constant weight of slurry sample, good slurry sample, slurry sample is weighed respectively
m1、m2、m3, then calculated and measured into slurry sample solution concentration C respectively by concentration formula C=m/MEnter, good slurry sample solution concentration CIt is good, slurry examination
Sample concentration CSlag；
Step C, ash-retention efficiency calculates：Pass through formula CT=CSlag/CEnterTry to achieve enrichment factor CT, finally by formula S=（CSlag-CIt is good×
CT）/(CSlag-CIt is good) × 100% measures the ash-retention efficiency S of heavy scummer.
The weighing equipment is the electronic balance that precision is 0.01g.
It is described to enter to starch sample, good slurry sample, the mass M of slurry sample1、M2、M3It is 25g.
Equipment is bottle,suction used by separation of solid and liquid.
The suction filtration time that the bottle,suction carries out separation of solid and liquid is 11min.
The drying temperature of the baking oven is 125C °, drying time 30min.
The group number of each sample is 5 groups, and the ash-retention efficiency is that remaining each group sample is surveyed after 5 groups of samples remove invalid group
Measure the average value of result.
In the step B, the environment temperature for weighing record is 21C °, humidity 8%.
The measurement data of the present embodiment, see the table below：
Embodiment 2
The present embodiment and the difference of embodiment 1 are：
The suction filtration time that the bottle,suction carries out separation of solid and liquid is 13min.
The drying temperature of the baking oven is 135C °, drying time 33min.
In the step B, the environment temperature for weighing record is 23C °, humidity 9%.
The measurement data of the present embodiment, see the table below：
Embodiment 3
The present embodiment and the difference of embodiment 1 are：
The suction filtration time that the bottle,suction carries out separation of solid and liquid is 15min.
The drying temperature of the baking oven is 145C °, drying time 35min.
In the step B, the environment temperature for weighing record is 25C °, humidity 10%.
The measurement data of the present embodiment, see the table below：
Above-described embodiment is the preferable implementation of the present invention, and in addition, the present invention can be realized with other manner,
Do not depart from and any on the premise of present inventive concept obviously replace within protection scope of the present invention.
Claims (3)
- A kind of 1. measuring method of the ash-retention efficiency of heavy scummer, it is characterised in that：Comprise the following steps：Step A, sample：Sampled in the stock inlet of scummer, good slurry outlet and slurry exit using sample cock, set with weighing It is standby to weigh M1Gram enter to starch sample, M2Gram good slurry sample and M3Gram slurry sample, save backup；Step B, the measurement of concetration of sample：Each sample of separation of solid and liquid, isolated solid is placed in baking oven and is dried to constant weight, And the quality m recorded into after isolated solid drying to the constant weight of slurry sample, good slurry sample, slurry sample is weighed respectively1、m2、 m3, then calculated and measured into slurry sample solution concentration C respectively by concentration formula C=m/MEnter, good slurry sample solution concentration CIt is good, slurry sample it is dense Spend CSlag；Step C, ash-retention efficiency calculates：Pass through formula CT=CSlag/CEnterTry to achieve enrichment factor CT, finally by formula S=（CSlag-CIt is good×CT）/ (CSlag-CIt is good) × 100% measures the ash-retention efficiency S of heavy scummer；Wherein, it is described to enter to starch sample, good slurry sample, the mass M of slurry sample1、M2、M3It is 25g；Used by separation of solid and liquid Equipment is bottle,suction, and the suction filtration time that the bottle,suction carries out separation of solid and liquid is 11-15min；The drying temperature of the baking oven is 125-145C °, drying time 30-35min；In the step B, the environment temperature for weighing record is 21-25C °, humidity 8- 10%。
- A kind of 2. measuring method of the ash-retention efficiency of heavy scummer according to claim 1, it is characterised in that：The weighing Equipment is the electronic balance that precision is 0.01g.
- A kind of 3. measuring method of the ash-retention efficiency of heavy scummer according to claim 1, it is characterised in that：Each examination The group number of sample is 5 groups, and the ash-retention efficiency is the average value that 5 groups of samples remove remaining each group sample measurement result after invalid group.
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| CN201510365626.7A CN104990825B (en) | 2015-06-29 | 2015-06-29 | A kind of measuring method of the ash-retention efficiency of heavy scummer |
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| CN104990825B true CN104990825B (en) | 2018-01-09 |
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| CN111636232B (en) * | 2020-06-03 | 2022-04-29 | 玖龙纸业（东莞）有限公司 | Two-section type high-concentration slag remover |
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| LU83768A1 (en) * | 1981-11-18 | 1983-09-01 | Wurth Paul Sa | DAIRY PELLET PROCESS AND PLANT |
| CN101470062A (en) * | 2007-12-25 | 2009-07-01 | 江西铜业集团公司 | Method for fast measuring heterogeneous slurry concentration |
| BR112014001081B1 (en) * | 2011-07-19 | 2022-09-20 | Jfe Steel Corporation | METHOD FOR CAST IRON REFINING |
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Address after: 523000 Guangdong Province, Dongguan City Ma Village Patentee after: Nine dragon paper (Dongguan) Co., Ltd. Address before: 523147 Guangdong province Dongguan City Machong town Xinsha Port Industrial Zone Patentee before: Dongguan Nine Dragons Paper Co., Ltd. |
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Effective date of registration: 20190520 Address after: 362123 No. 540 Mentou Street, Mentou Village, Zhangbanzhen, Taiwanese Business Investment Zone, Quanzhou City, Fujian Province Patentee after: Nine Dragons Paper (Quanzhou) Co., Ltd. Address before: 523000 Mayong Town, Dongguan City, Guangdong Province, Ma II Village Patentee before: Nine dragon paper (Dongguan) Co., Ltd. |
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