CN113176373A - Method for rapidly detecting rust in gypsum powder by using salt cake - Google Patents
Method for rapidly detecting rust in gypsum powder by using salt cake Download PDFInfo
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- CN113176373A CN113176373A CN202110438477.8A CN202110438477A CN113176373A CN 113176373 A CN113176373 A CN 113176373A CN 202110438477 A CN202110438477 A CN 202110438477A CN 113176373 A CN113176373 A CN 113176373A
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- gypsum
- rust
- grade
- gypsum powder
- cake
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 97
- 239000010440 gypsum Substances 0.000 title claims abstract description 97
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000000843 powder Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 25
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 12
- 150000004820 halides Chemical class 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 14
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 235000011164 potassium chloride Nutrition 0.000 claims description 7
- 239000001103 potassium chloride Substances 0.000 claims description 7
- 239000011780 sodium chloride Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 241000212749 Zesius chrysomallus Species 0.000 description 8
- 239000002002 slurry Substances 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a method for rapidly detecting rust in gypsum powder by using salt blocks, which comprises the following steps: mixing water treatment; step two: placing and processing; step three: rust detection; step four: judging the grade of the iron rust; mixing water treatment; sequentially adding water and halide into a container; dissolving halide in water, and adding gypsum powder; stirring the gypsum in the container by a stirring rod; placing and processing; pouring the gypsum in the container on clean glass to form a thin gypsum cake; after the gypsum round cake is solidified, moving the gypsum round cake to room temperature for standing reaction; rust detection; observing the gypsum round cake after the placing reaction, and judging the amount of rust on the surface of the gypsum round cake; according to the method, the rust in the gypsum powder can be rapidly detected by adding the salt, the test of a batch of samples can be completed within 48 hours, the grades of the rust in the gypsum are classified, the grade and the availability of the gypsum are judged according to the number of the rust, and the method is simple and high in practicability.
Description
Technical Field
The invention relates to a detection method, in particular to a method for quickly detecting iron rust in gypsum powder by using salt blocks.
Background
In the prior art in China, the method for detecting rust of gypsum powder comprises the steps of adding water into the gypsum powder, stirring and pouring the gypsum powder on a glass plate to form a thin layer, removing the gypsum powder after solidification, and standing the gypsum powder at room temperature for about 15 days to see whether red rust spots exist on a gypsum cake; the method has the disadvantages of complicated operation steps and long testing time, and can not guide production and correct the iron and scrap removing process in time.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for rapidly detecting iron rust in gypsum powder by using salt blocks, which can rapidly detect the iron rust in the gypsum powder by adding salt, can finish the test of a batch of samples within 48 hours, classifies the grade of the iron rust in the gypsum, judges the grade and the availability of the gypsum according to the number of the iron rust, and has the advantages of simplicity and strong practicability.
The method for rapidly detecting the iron rust in the gypsum powder by using the salt cake is realized by the following technical scheme: the method comprises the following steps:
the method comprises the following steps: mixing water treatment;
step two: placing and processing;
step three: rust detection;
step four: judging the grade of the iron rust;
mixing water treatment; sequentially adding water and halide into a container; dissolving halide in water, and adding gypsum powder; stirring the gypsum in the container by a stirring rod;
placing and processing; pouring the gypsum in the container on clean glass to form a gypsum round cake; after the round gypsum cake is solidified, moving the solidified round gypsum cake to room temperature for standing reaction;
rust detection; observing the gypsum round cake after the placing reaction, and judging the amount of rust on the surface of the gypsum round cake;
judging the grade of the iron rust; no red rust spot, the judgment grade is first grade: a red rust point, the grade of which is judged as two levels; two red rusty spots, the grade is judged to be qualified: three or more red rusty spots, and judging the grade as unqualified.
The dosage of the mixing water is less than a standard value; the stirring rod adopts a carbon rod;
the reaction equation is:
Fe-2e-＝Fe2+；
2H2O+4e-+O2＝4OH-；
2Fe+2H2O+O2＝2Fe(OH)2。
as the preferred technical scheme, the mixing water has poor conductivity, and the corrosion of iron is accelerated by adding salt such as sodium chloride and potassium chloride to form a primary battery; fe is used as a negative electrode, and carbon contained in iron is used as a positive electrode, but carbon does not directly participate in the reaction, but only receives electrons lost from Fe, so that O2 in the air obtains electrons, thereby accelerating iron oxidation.
As a preferable technical scheme, the grade is judged to be first grade and second grade, qualified gypsum powder can be used, and unqualified gypsum powder cannot be used.
As a preferred technical scheme, one or more of sodium chloride and potassium chloride are adopted as the halide.
The invention has the beneficial effects that: the rust in the gypsum powder can be quickly detected by adding salt, the test of a batch of samples can be completed within 48 hours, the grade of the rust in the gypsum is classified, the grade of the gypsum and the availability of the gypsum are judged according to the number of the rust, and the method is simple and has strong practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the method for rapidly detecting iron rust in gypsum powder by using salt lumps according to the invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in figure 1, the method for rapidly detecting the iron rust in the gypsum powder by using the salt blocks comprises the following steps:
the method comprises the following steps: mixing water treatment;
step two: placing and processing;
step three: rust detection;
step four: judging the grade of the iron rust;
mixing water treatment; sequentially adding water and halide into a container; dissolving halide in water, and adding gypsum powder; stirring the gypsum in the container by a stirring rod;
placing and processing; pouring the gypsum in the container on clean glass to form a thin gypsum cake; after the round gypsum cake is solidified, moving the solidified round gypsum cake to room temperature for standing reaction;
rust detection; observing the gypsum round cake after the placing reaction, and judging the amount of rust on the surface of the gypsum round cake;
judging the grade of the iron rust; no red rust spot, the judgment grade is first grade: a red rust point, the grade of which is judged as two levels; two red rusty spots, the grade is judged to be qualified: three or more red rusty spots, and judging the grade as unqualified.
The dosage of the mixing water is less than a standard value; the stirring rod adopts a carbon rod;
the reaction equation is:
Fe-2e-＝Fe2+；
2H2O+4e-+O2＝4OH-；
2Fe+2H2O+O2＝2Fe(OH)2。
in the embodiment, the mixing water has poor conductivity, and the corrosion of iron is accelerated by adding salt such as sodium chloride and potassium chloride to form a primary battery; fe is used as a negative electrode, and carbon contained in iron is used as a positive electrode, but carbon does not directly participate in the reaction, but only receives electrons lost from Fe, so that O2 in the air obtains electrons, thereby accelerating iron oxidation.
Example 1
In this example, 100g of tap water was weighed into a 500ml beaker, and 5g of sodium chloride was weighed and stirred with a stirring rod. 100g of gypsum powder is scattered into a beaker filled with water by an electronic scale, stirred by a stirring rod for the inflow time, and then the gypsum slurry is poured on clean glass to form a thin layer of cake. After the gypsum powder is solidified, the gypsum powder is removed by a shovel, and the gypsum powder is placed at room temperature for 48 hours, and then whether red spots exist on the gypsum powder or not and the number of the red spots appear on the gypsum powder are judged, so that whether the gypsum powder has rust or not and the grade of the rust are judged.
Example 2
In this example, 80g of tap water was weighed into a 500ml beaker, 6g of sodium chloride was weighed again, and stirred uniformly with a stirring rod. 100g of gypsum powder is scattered into a beaker filled with water by an electronic scale, stirred by a stirring rod for the inflow time, and then the gypsum slurry is poured on clean glass to form a thin layer of cake. After the gypsum powder is solidified, the gypsum powder is removed by a shovel, and the gypsum powder is placed at room temperature for 48 hours, and then whether red spots exist on the gypsum powder or not and the number of the red spots appear on the gypsum powder are judged, so that whether the gypsum powder has rust or not and the grade of the rust are judged.
Example 3
In this example, 100g of tap water was weighed and poured into a 500ml beaker, and 8g of potassium chloride was weighed and stirred uniformly with a stirring rod. 100g of gypsum powder is scattered into a beaker filled with water by an electronic scale, stirred by a stirring rod for the inflow time, and then the gypsum slurry is poured on clean glass to form a thin layer of cake. After the gypsum powder is solidified, the gypsum powder is removed by a shovel, and the gypsum powder is placed at room temperature for 48 hours, and then whether red spots exist on the gypsum powder or not and the number of the red spots appear on the gypsum powder are judged, so that whether the gypsum powder has rust or not and the grade of the rust are judged.
Example 4
In this example, 80g of tap water was weighed into a 500ml beaker, 6g of potassium chloride was weighed out again, and stirred uniformly with a stirring rod. 100g of gypsum powder is scattered into a beaker with water added by an electronic scale, stirred by a stirring rod for the inflow time, and then the gypsum slurry is poured on clean glass to form a thin layer of thin gypsum round cake. After the gypsum powder is solidified, the gypsum powder is removed by a shovel, and the gypsum powder is placed at room temperature for 48 hours, and then whether red spots exist on the gypsum powder or not and the number of the red spots appear on the gypsum powder are judged, so that whether the gypsum powder has rust or not and the grade of the rust are judged.
In this embodiment, the amount of the blending water is less than a standard value, specifically, 80-100% of the amount of the blending water is greater than a standard consistency, so as to provide a more humid environment and accelerate the electrochemical reaction of iron.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (4)
1. A method for rapidly detecting rust in gypsum powder by using salt blocks is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: mixing water treatment;
step two: placing and processing;
step three: rust detection;
step four: judging the grade of the iron rust;
mixing water treatment: sequentially adding water and halide into a container; dissolving the halide in water, and adding gypsum powder; stirring the gypsum in the container by a stirring rod;
placing treatment: pouring the gypsum in the container on clean glass to form a thin gypsum cake; after the gypsum round cake is solidified, moving the solidified gypsum round cake to room temperature for standing reaction;
and (4) rust testing: observing the gypsum round cake after the placing reaction, and judging the amount of rust on the surface of the gypsum round cake;
judging the rust grade: no red rust spot, the judgment grade is first grade: a red rust point, the grade of which is judged as two levels; two red rusty spots, the grade is judged to be qualified: three or more red rust points, and judging the grade as unqualified;
the dosage of the mixing water is less than the standard value: the stirring rod adopts a carbon rod;
the reaction equation is:
Fe-2e-＝Fe2+；
2H2O+4e-+O2＝4OH-；
2Fe+2H2O+O2＝2Fe(OH)2。
2. the method for rapidly detecting rust in gypsum powder by using the salt cake as claimed in claim 1, wherein: the mixing water has poor conductivity, and the corrosion of iron is accelerated by adding salt such as sodium chloride and potassium chloride to form a primary battery; fe is used as a negative electrode, carbon contained in iron is used as a positive electrode, but the carbon does not directly participate in the reaction, only electrons lost from Fe are received, and O in the air2Electrons are obtained, and iron oxidation is accelerated.
3. The method for rapidly detecting rust in gypsum powder by using the salt cake as claimed in claim 1, wherein: the judgment grades are first grade and second grade, qualified gypsum powder used for use is judged, and unqualified gypsum powder used for non-use is judged.
4. The method for rapidly detecting rust in gypsum powder by using the salt cake as claimed in claim 1, wherein: the halide is one or more of sodium chloride and potassium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110438477.8A CN113176373B (en) | 2021-04-22 | Method for rapidly detecting rust in gypsum powder by using salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110438477.8A CN113176373B (en) | 2021-04-22 | Method for rapidly detecting rust in gypsum powder by using salt |
Publications (2)
| Publication Number | Publication Date |
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| CN113176373A true CN113176373A (en) | 2021-07-27 |
| CN113176373B CN113176373B (en) | 2024-05-31 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441030A (en) * | 2010-10-09 | 2012-05-09 | 安徽科创中药天然药物研究所有限责任公司 | Compound medicine for treating fungus infection diseases, its preparation method and quality control technology |
| CN103760158A (en) * | 2014-01-06 | 2014-04-30 | 北京神雾环境能源科技集团股份有限公司 | Method for determining calcium oxide and magnesium oxide in iron slag grains |
| CN106918591A (en) * | 2015-12-28 | 2017-07-04 | 立邦涂料（中国）有限公司 | The assay method of iron tramp in a kind of inner and external wall putty for building and powdered whiting |
| US20210087641A1 (en) * | 2018-02-19 | 2021-03-25 | Charite - Universitatsmedizin Berlin | Method for determining dermatophytes |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441030A (en) * | 2010-10-09 | 2012-05-09 | 安徽科创中药天然药物研究所有限责任公司 | Compound medicine for treating fungus infection diseases, its preparation method and quality control technology |
| CN103760158A (en) * | 2014-01-06 | 2014-04-30 | 北京神雾环境能源科技集团股份有限公司 | Method for determining calcium oxide and magnesium oxide in iron slag grains |
| CN106918591A (en) * | 2015-12-28 | 2017-07-04 | 立邦涂料（中国）有限公司 | The assay method of iron tramp in a kind of inner and external wall putty for building and powdered whiting |
| US20210087641A1 (en) * | 2018-02-19 | 2021-03-25 | Charite - Universitatsmedizin Berlin | Method for determining dermatophytes |
Non-Patent Citations (2)
| Title |
|---|
| 沙默、云圭: "热力设备的腐蚀与防护", vol. 1, 31 January 1983, 湖南教育出版社, pages: 58 - 22 * |
| 薄晓军;: "电化学原理及其应用专题复习", 试题与研究, no. 23, 10 September 2012 (2012-09-10) * |
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