CN114965849B - Test powder for judging existence of flocculant in water-washed sand and judging method - Google Patents
Test powder for judging existence of flocculant in water-washed sand and judging method Download PDFInfo
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- CN114965849B CN114965849B CN202210514358.0A CN202210514358A CN114965849B CN 114965849 B CN114965849 B CN 114965849B CN 202210514358 A CN202210514358 A CN 202210514358A CN 114965849 B CN114965849 B CN 114965849B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/02—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using precipitation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The application discloses test powder for judging the existence of a flocculating agent in water-washed sand and a judging method, wherein the test powder comprises the following components in percentage by weight 2 35.5-36.5%, caO 22.0-23.0%, al 2 O 3 15.5-16.8%, mgO 5.3-6.2%; k (K) 2 O accounts for 3.9-4.5%; the balance of Fe 2 O 3 、SO 3 、Na 2 An O mixture. The judging method comprises the following steps: taking the water washed sand as a beaker with water in a sample; standing by a stirrer; adding test powder into the supernatant, and placing into a measuring cylinder or a test tube with a plug; oscillating to observe flocculation; if flocculation precipitation is fast, judging that the water-washed sand contains flocculant, otherwise, the water-washed sand does not contain flocculant. The application has the advantages of low cost, easy acquisition of raw materials, less consumption and convenient field use.
Description
Technical Field
The application relates to the technical field of material engineering, in particular to test powder for judging the existence of a flocculating agent in water-washed sand and a judging method.
Background
In recent years, with the continuous expansion of the demand of building markets, the sand usage amount is rapidly increased, natural sand resources are being reduced year by year, and the use of machine-made sand is promoted and applied on a large scale. The water-washing machine-made sand can generate a large amount of mud and stone powder in the production and crushing processes, and is usually treated in a water-washing mode. Yellow sand with excessive mud is treated by water washing. The water for washing the sand stone is required to be purified and cannot be discharged in disorder. Because the flocculant can make solute, colloid or suspended particles in the aqueous solution produce flocculent precipitate so as to play a role in purifying water quality, the flocculant (polyacrylamide and polyaluminum chloride) is widely used by sand and stone production enterprises at present to purify and filter water quality for recycling. However, sand and stone production enterprises only consider that the discharge of the sand and stone washing water meets the environmental protection requirement, but do not consider that a large amount of flocculating agent contained in the recycled sand and stone washing water can be brought into sand and stone, so that the quality of concrete is affected.
The sand with the excessive flocculant content can have great influence on the performance of concrete, at present, two methods for measuring the flocculant are available, one method is an infrared spectrum analysis method aiming at an organic flocculant, the type and the content of the flocculant can be accurately judged, but the two problems exist, on one hand, the sample preparation is complex, the sample which is enough for infrared analysis is difficult to collect because the flocculant content in water is low, and in addition, the infrared analysis test instrument is not available in every laboratory and is high in price. Another is a chemical titration method for polyaluminum chloride flocculant, which has the problem of complex operation flow. There is no patent about other determination methods for flocculants. In addition, there is a method for judging whether flocculant is contained or not by the sedimentation rate of fine powder, but the sand after water washing has less fine powder, more stone powder, higher density and higher sedimentation rate per se, and cannot be accurately judged.
There is therefore a need for a method that can be used in the field to quickly determine the presence or absence of a flocculant.
Disclosure of Invention
1. The technical problems to be solved are as follows:
aiming at the technical problems, the application provides the test powder and the judging method for judging the existence of the flocculant in the water-washed sand, which can be directly applied to a construction site and can realize rapid judgment of whether the water-washed sand contains the flocculant.
2. The technical scheme is as follows:
a test powder for judging the existence of a flocculating agent in water-washed sand and a judging method are characterized in that: the content of each component of the test powder is SiO based on the total weight of the raw materials 2 35.5-36.5%, caO 22.0-23.0%, al 2 O 3 15.5-16.8%, mgO 5.3-6.2%; the balance of Fe 2 O 3 、SO 3 、Na 2 An O mixture.
Further, the specific surface area of the test powder is 260-350m 2 Per gram, the relative density is 2-3g/cm 3 。
Further, the method for judging whether the flocculant exists in the water-washed sand by using the test powder comprises the following steps:
step one: taking water-washed sand possibly containing flocculant as a sample, and pouring the sample into a beaker containing water;
step two: stirring the mixed solution in the first step for a preset time by using a stirrer, and then standing;
step three: taking the supernatant fluid generated in the second step, and placing the supernatant fluid in a measuring cylinder or a test tube with a plug; meanwhile, weighing test powder with preset quality, and adding the test powder into a measuring cylinder or a test tube with a plug;
step four: oscillating the measuring cylinder or the test tube by using an oscillator or shaking the measuring cylinder or the test tube by hand for a certain time, and observing flocculation conditions;
step five: if flocculation precipitation is found within 10-30s, judging that the water washing sand contains flocculant, otherwise, the water washing sand does not contain flocculant.
Further, the method for judging whether the flocculant exists in the water-washed sand by using the test powder comprises the following steps:
the first step is as follows: 200g of water-washed sand possibly containing flocculant is taken as a sample, and the sample is poured into a beaker containing (500+/-5) ml of water;
step two: stirring the mixed solution in the first step for 5-10min at a stirring speed of (600+/-60) r/min by using an impeller stirrer, and then standing for 20-30min;
step three: weighing 100ml of supernatant generated in the second step, and placing in a measuring cylinder or a test tube with a plug; simultaneously weighing 5-10g of test powder and adding the test powder into a measuring cylinder or a test tube with a plug;
step four: oscillating the measuring cylinder or test tube with an oscillator for 2-4min, or shaking by hand, and observing flocculation;
step five: if flocculation precipitation is found within 10-30s, judging that the water washing sand contains flocculant, otherwise, the water washing sand does not contain flocculant.
3. The beneficial effects are that:
(1) The test powder for judging the presence of the flocculant in the water-washed sand has the advantages of low raw material cost, easy acquisition, small dosage and convenient field use.
(2) The test method for judging the existence of the flocculant in the water-washed sand provided by the application has the advantages of simple required equipment, simple operation steps and convenience in field operation. Can rapidly judge whether the water-washed sand contains flocculating agent.
Detailed Description
Example 1:
raw materials: 5g of test powder; the content of the components is specifically SiO based on the total weight of the raw materials 2 36.5%, caO 22.0%, al 2 O 3 16.8% and 5.3% MgO; the balance of Fe 2 O 3 、SO 3 、Na 2 An O mixture.
The method comprises the following steps:
(1) Weighing sand and water with certain mass according to the actually measured water content and the on-site mixing ratio in the following table;
(2) Stirring the mixed solution for 5min at a stirring speed of (600+/-60) r/min by using an impeller stirrer, and then standing for 20min;
(3) Weighing 100ml of supernatant generated in the second step, and placing in a measuring cylinder or a test tube with a plug; simultaneously weighing the test powder 5, and adding the test powder into a measuring cylinder or a test tube with a plug;
(4) Oscillating the measuring cylinder or the test tube for 2min by using an oscillator, or shaking the measuring cylinder or the test tube for 5min by hand, and observing the sedimentation condition of the test powder;
step five: if flocculation precipitation is found within 10-30s, judging that the water washing sand contains flocculant, otherwise, the water washing sand does not contain flocculant.
Experimental phenomena and conclusions: from the sedimentation aspect, flocculation precipitation occurs 30s after the standard powder is added. It can be determined that the sand contains a flocculant. In addition, the auxiliary mortar test verifies the reliability of the judging method.
Example 2:
raw materials: 10g of test powder; the content of the components is specifically SiO based on the total weight of the raw materials 2 35.5%, caO 23.0%, al 2 O 3 15.5% and 6.2% MgO; the balance of Fe 2 O 3 、SO 3 、Na 2 An O mixture.
The method comprises the following steps:
(1) Weighing sand and water with certain mass according to the actually measured water content and the on-site mixing ratio in the following table;
(2) Stirring the mixed solution for 5min at a stirring speed of (600+/-60) r/min by using an impeller stirrer, and then standing for 30min;
(3) Weighing 100ml of supernatant generated in the second step, and placing in a measuring cylinder or a test tube with a plug; simultaneously weighing 5g of test powder and adding the test powder into a measuring cylinder or a test tube with a plug;
(4) Oscillating the measuring cylinder or the test tube for 4min by using an oscillator, or shaking the measuring cylinder or the test tube for 10min by hand, and observing the sedimentation condition of the test powder;
step five: if flocculation precipitation is found within 10 seconds, judging that the water-washed sand contains flocculant, otherwise, the water-washed sand does not contain flocculant.
Experimental phenomena and conclusions: from the sedimentation aspect, flocculation precipitation occurs 30s after the standard powder is added. It can be determined that the sand contains a flocculant. In addition, the auxiliary mortar test verifies the reliability of the judging method.
Example 3:
the method comprises the following steps:
raw materials: 8g of test powder; the content of the components is specifically SiO based on the total weight of the raw materials 2 36.0%, caO 22.5%, al 2 O 3 16.5% and 6.0% MgO; the balance of Fe 2 O 3 、SO 3 、Na 2 An O mixture.
(1) Weighing sand and water with certain mass according to the actually measured water content and the on-site mixing ratio in the following table;
(2) Stirring the mixed solution for 7min at a stirring speed of (600+/-60) r/min by using an impeller stirrer, and standing for 25min;
(3) Weighing 100ml of supernatant generated in the second step, and placing in a measuring cylinder or a test tube with a plug; simultaneously weighing 8g of test powder and adding the test powder into a measuring cylinder or a test tube with a plug;
(4) Oscillating the measuring cylinder or the test tube for 4min by using an oscillator, or shaking the measuring cylinder or the test tube for 10min by hand, and observing the sedimentation condition of the test powder;
step five: if flocculation precipitation is found within 20 seconds, judging that the water-washed sand contains flocculant, otherwise, the water-washed sand does not contain flocculant.
Experimental phenomena and conclusions: from the sedimentation aspect, flocculation precipitation occurs 30s after the standard powder is added. It can be determined that the sand contains a flocculant. In addition, the auxiliary mortar test verifies the reliability of the judging method.
Comparative example:
the mortar test method comprises the following steps: and (3) performing a comparative mortar test on the sand containing the flocculant and the unwashed sand after repeated water washing, and finding that the mixing amount of the washed sand additive is obviously reduced when the fluidity of the washed sand and the unwashed sand mortar is close to that of the unwashed sand mortar, wherein test data are shown in the following table. It can be proved that the method mentioned in the patent can accurately judge the presence or absence of the flocculant.
While the application has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the application, and it is intended that the scope of the application shall be defined by the appended claims.
Claims (5)
1. A test powder for determining the presence of a flocculant in water washed sand, characterized by: the content of each component of the test powder is SiO based on the total weight of the raw materials 2 35.5-36.5%, caO 22.0-23.0%, al 2 O 3 15.5-16.8%, mgO 5.3-6.2%; k (K) 2 O accounts for 3.9-4.5%; the balance of Fe 2 O 3 、SO 3 、Na 2 An O mixture.
2. A test powder for determining the presence of a flocculant in a water washed sand as claimed in claim 1, wherein: the specific surface area of the test powder is 260-350m 2 Per gram, the relative density is 2-3g/cm 3 。
3. A method for judging a test powder for the presence of a flocculant in a water-washed sand according to claim 1, wherein: the method for judging whether flocculant exists in the water-washed sand by using the test powder comprises the following steps:
step one: taking water-washed sand possibly containing flocculant as a sample, and pouring the sample into a beaker containing water;
step two: stirring the mixed solution in the first step for a preset time by using a stirrer, and then standing;
step three: taking the supernatant fluid generated in the second step, and placing the supernatant fluid in a measuring cylinder or a test tube with a plug; meanwhile, weighing test powder with preset quality, and adding the test powder into a measuring cylinder or a test tube with a plug;
step four: oscillating the measuring cylinder or the test tube by using an oscillator or shaking the measuring cylinder or the test tube by hand for a certain time, and observing flocculation conditions;
step five: if flocculation precipitation is found within 10-30s, judging that the water washing sand contains flocculant, otherwise, the water washing sand does not contain flocculant.
4. A method for judging a test powder for the presence of a flocculant in a water-washed sand according to claim 3, wherein:
the method for judging whether flocculant exists in the water-washed sand by using the test powder comprises the following steps:
step one: 200g of water-washed sand possibly containing flocculant is taken as a sample, and the sample is poured into a beaker containing (500+/-5) ml of water;
step two: stirring the mixed solution in the first step for 5-10min at a stirring speed of (600+/-60) r/min by using an impeller stirrer, and then standing for 20-30min;
step three: weighing 100ml of supernatant generated in the second step, and placing in a measuring cylinder or a test tube with a plug; simultaneously weighing 5-10g of test powder and adding the test powder into a measuring cylinder or a test tube with a plug;
step four: oscillating the measuring cylinder or test tube with an oscillator for 2-4min, or shaking up by hand for 5-10 mm, and observing flocculation;
step five: if flocculation precipitation is found within 10-30s, judging that the water washing sand contains flocculant, otherwise, the water washing sand does not contain flocculant.
5. A method for judging a test powder for the presence of a flocculant in a water-washed sand according to claim 3, wherein: the water washed sand is wet sand with water content of 3-20%.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02114178A (en) * | 1988-10-25 | 1990-04-26 | Ebara Infilco Co Ltd | Coagulating sedimentation test apparatus |
| JPH10309403A (en) * | 1997-05-13 | 1998-11-24 | Masujiro Arita | Powder-state flocculant composition and flocculating treatment method |
| CN1355427A (en) * | 2000-11-28 | 2002-06-26 | 中国石油化工股份有限公司中原油田分公司采油三厂 | Process for testing concentration of polyacrylamide |
| CN101755205A (en) * | 2007-07-20 | 2010-06-23 | 兴和株式会社 | Reagent for measurement of concentration of lead, and method for measurement of concentration of lead |
| KR101169563B1 (en) * | 2012-02-13 | 2012-07-27 | 박영구 | An inorganic coagulant comprising waste plaster, starfish powder, shell powder and clay mineral |
| CN105366781A (en) * | 2015-11-18 | 2016-03-02 | 安徽省环境科学研究院 | Water purification composite flocculating agent and preparation method and use method thereof |
| JP2017181504A (en) * | 2016-03-29 | 2017-10-05 | 住重環境エンジニアリング株式会社 | Method and system for quantifying chelators |
| CN207798761U (en) * | 2017-12-20 | 2018-08-31 | 上海实宝来机械制造有限公司 | A kind of flocculant performance test reaction tube |
| CN111157403A (en) * | 2019-12-23 | 2020-05-15 | 成都宏基建材股份有限公司 | Method for detecting flocculating agent in sand |
| CN112710617A (en) * | 2020-07-02 | 2021-04-27 | 科之杰新材料集团(广东)有限公司 | Flocculation performance test evaluation method of flocculant for washing sand |
| CN113720804A (en) * | 2021-07-29 | 2021-11-30 | 成都宏基建材股份有限公司 | Method for rapidly detecting residual quantity of flocculating agent in sand for concrete |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110135797A1 (en) * | 2009-12-07 | 2011-06-09 | Alberta Innovates - Technology Futures | Flocculation method |
-
2022
- 2022-05-12 CN CN202210514358.0A patent/CN114965849B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02114178A (en) * | 1988-10-25 | 1990-04-26 | Ebara Infilco Co Ltd | Coagulating sedimentation test apparatus |
| JPH10309403A (en) * | 1997-05-13 | 1998-11-24 | Masujiro Arita | Powder-state flocculant composition and flocculating treatment method |
| CN1355427A (en) * | 2000-11-28 | 2002-06-26 | 中国石油化工股份有限公司中原油田分公司采油三厂 | Process for testing concentration of polyacrylamide |
| CN101755205A (en) * | 2007-07-20 | 2010-06-23 | 兴和株式会社 | Reagent for measurement of concentration of lead, and method for measurement of concentration of lead |
| KR101169563B1 (en) * | 2012-02-13 | 2012-07-27 | 박영구 | An inorganic coagulant comprising waste plaster, starfish powder, shell powder and clay mineral |
| CN105366781A (en) * | 2015-11-18 | 2016-03-02 | 安徽省环境科学研究院 | Water purification composite flocculating agent and preparation method and use method thereof |
| JP2017181504A (en) * | 2016-03-29 | 2017-10-05 | 住重環境エンジニアリング株式会社 | Method and system for quantifying chelators |
| CN207798761U (en) * | 2017-12-20 | 2018-08-31 | 上海实宝来机械制造有限公司 | A kind of flocculant performance test reaction tube |
| CN111157403A (en) * | 2019-12-23 | 2020-05-15 | 成都宏基建材股份有限公司 | Method for detecting flocculating agent in sand |
| CN112710617A (en) * | 2020-07-02 | 2021-04-27 | 科之杰新材料集团(广东)有限公司 | Flocculation performance test evaluation method of flocculant for washing sand |
| CN113720804A (en) * | 2021-07-29 | 2021-11-30 | 成都宏基建材股份有限公司 | Method for rapidly detecting residual quantity of flocculating agent in sand for concrete |
Non-Patent Citations (1)
| Title |
|---|
| 絮凝剂在机砂中的残留量对混凝土性能的影响;符惠玲;仲以林;韦朝丹;邓焕友;;广东建材(第06期);全文 * |
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