CN104502217A - Method for rapidly and accurately detecting content of silicon in nitrification intensifier - Google Patents
Method for rapidly and accurately detecting content of silicon in nitrification intensifier Download PDFInfo
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Abstract
The invention discloses a method for rapidly and accurately detecting the content of silicon in a nitrification intensifier. The method comprises the following steps: firstly crushing a sample, mixing the crushed sample with sodium nitrate and sodium hydroxide in a nickel crucible, covering sodium hydroxide, heating, melting and leaching with hot water; adding hydrochloric acid to the obtained testing liquid, and heating until the solution is clear; adding perchloric acid, and heating until the testing liquid smokes; crystallizing the residues and forming a viscous state; sequentially adding hydrochloric acid, hot water and hydrogen peroxide, stirring until no bubbles exist in the testing liquid and then filtering; washing a filter paper and sediments with the hydrochloric acid until a washing liquor does not become color after being dripped into an ammonium thiocyanate solution; washing the filter paper and the sediments with water until the washing liquor does not become color after being dripped into a silver nitrate solution; and putting the sediments and the filter paper into a constant-weight porcelain crucible, firing to form constant weight, cooling to a room temperature, and weighing, wherein the silicon content is calculated according to the following formula as shown in the description. According to the method disclosed by the invention, rapid detection of the content of silicon in the nitrification intensifier can be achieved; and the detection result is accurate, reliable and good in repeatability.
Description
Technical field
The invention belongs to metallurgical material test and analysis technology field, be specifically related to a kind of fast, the detection method of silicone content in nitrogenize reinforcing agent accurately.
Background technology
In smelting iron and steel is produced, current domestic main employing nitrogenize reinforcing agent makes the nitrogen promoter of plow-steel, and due to the rise of ferro-niobium price, the cost of efficient steel grade also constantly increases thereupon, have impact on the economic benefit of enterprise.For reducing the production cost of efficient steel, in the smelting of steel is produced, often add appropriate nitrogenize reinforcing agent, the total nitrogen in steel is increased, can under equal conditions form more Nb(CN), thus enhance crystal grain thinning and the precipitation strength effect of Nb, increase the recovery of niobium in smelting.Meanwhile, add due to nitrogen the comprehensive mechanical property that improve steel, make its anti-seismic performance more excellent, also help reduction production cost.
The principal ingredient of known nitrogenize reinforcing agent is the elements such as C, Si, Mn, S, P and N, in order to the accurate control of the stable smooth operation and chemical composition that ensure converter smelting, be necessary to carry out Accurate Measurement to each constituent content in nitrogenize reinforcing agent, optimizing the Design of Chemical Composition smelted and produce, is enterprise's cost efficiency.
Summary of the invention
The object of the present invention is to provide a kind of fast, the detection method of silicone content in nitrogenize reinforcing agent accurately.
The object of the present invention is achieved like this, described fast, the detection method of silicone content in nitrogenize reinforcing agent accurately, comprise pulverizing, dissolving, acidifying, precipitation, filtration, calcination and calculation process, specifically comprise:
A, pulverizing: nitrogenize reinforcing agent sample to be measured is pulverized and sieved to granularity≤0.125mm.
B, dissolving: take 0.2000g sample, with 0.5g solid nitric acid sodium, the mixing of 4.0g solid sodium hydroxide is placed in nickel crucible, surface coverage 1.0g solid sodium hydroxide, after 590 ~ 610 DEG C of melting 6 ~ 8min, be cooled to 60 ~ 70 DEG C, by the flooding of fused mass with 90 ~ 150ml 80 ~ 100 DEG C, and clean nickel crucible with the water of 30 ~ 60ml 80 ~ 100 DEG C, collect washing lotion and leaching liquor, be mixed to get test solution a.
C, acidifying: the hydrochloric acid adding 30ml 37% in test solution a, is heated to solution limpid, cooling 2 ~ 3min, then add the perchloric acid of 80 ml 70%, obtain test solution b.
D, precipitation: after test solution b being heated to release the white cigarette of perchloric acid, cover liquid container opening, the residue continuing to be heated to be fuming starts crystallization and presents thick, cooling 2 ~ 3min, slowly add successively again people 20ml by volume ratio 1:1 37% hydrochloric acid and the hydrochloric acid solution that mixes of water, the water that 100ml is 80 ~ 100 DEG C, 10 by volume ratio 1:6 30% hydrogen peroxide and the mixed liquor that mixes of water, with stirring rod stir to test solution without minute bubbles, obtain test solution c.
E, filtration: test solution c middling speed quantitative filter paper is filtered, with 80 ~ 100 DEG C by volume ratio 5:95 37% hydrochloric acid and the dilute hydrochloric acid solution that mixes of water, washing liquid container and stirring rod 5 ~ 6 times, and washing lotion is filtered, again by same dilute hydrochloric acid solution washing filter paper and precipitation, until washing lotion is dripped in the ammonium thiocyanate solution of 10.0g/L, the nondiscolouring of ammonium thiocyanate solution, then water washing filter paper and the precipitation of 80 ~ 100 DEG C is used, until washing lotion is dripped in the liquor argenti nitratis ophthalmicus of 2.0g/L, liquor argenti nitratis ophthalmicus nondiscolouring, obtains precipitation.
F, calcination: porcelain crucible precipitation and filter paper being placed in constant weight, porcelain crucible is placed in high temperature furnace, to precipitation and filter paper evaporates, ashing, calcination, calcination 100 ~ 150min is incubated after the temperature of high temperature furnace rises to 1000 ± 50 DEG C from room temperature, again porcelain crucible is placed in exsiccator and is cooled to room temperature, weigh.
G, calculating: in described nitrogenize reinforcing agent sample, the calculating of silicone content is undertaken by following formula:
Si（%）=
100
In formula:
M
1---the gross mass of calcination postprecipitation and porcelain crucible, g;
M
---the quality of porcelain crucible, g;
M
---the quality of sample, g;
0.4674---silicon dioxide is scaled the reduction coefficient of silicon.
Detection method of the present invention has following beneficial effect:
1, in the accuracy of testing result, the method for the invention, by optimizing the parameter combinations of each analytical procedure, makes sample decompose completely, without heterogeneous interference, without dissipating, effectively reduce experimental error, testing result has good accuracy, stability and reappearance.
2, in detection speed, it is rapid that the method for the invention has sample preparation, detects quick, sense cycle is short, the feature that analysis efficiency is high, has saved analysis time, reduce the labour intensity of test analysis personnel, fully can adapt to the demand of suitability for industrialized production to sample express-analysis in enormous quantities.
3, in testing process, the method for the invention is simple to operate, easily learns well and understands, to test analysis personnel without excessive demand, is conducive to large-scale promotion application.
4, in the scope of application, the method for the invention is specially adapted to the mensuration of the nitrogenize reinforcing agent sample of silicone content 10 ~ 35%, has filled up the blank of association area in national standard and industry standard, has had higher promotional value.
Embodiment
The present invention is further illustrated below, but limited the present invention never in any form, and any conversion done based on training centre of the present invention or replacement, all belong to protection scope of the present invention.
Of the present invention fast, the detection method of silicone content in nitrogenize reinforcing agent accurately, comprise pulverizing, dissolving, acidifying, precipitation, filtration, calcination and calculation process, specifically comprise:
Described pulverizing process refers to and pulverizes and sieves nitrogenize reinforcing agent sample to be measured to granularity≤0.125mm.
Described dissolution process refers to and takes 0.2000g sample, with 0.5g solid nitric acid sodium, the mixing of 4.0g solid sodium hydroxide is placed in nickel crucible, surface coverage 1.0g solid sodium hydroxide, after 590 ~ 610 DEG C of melting 6 ~ 8min, be cooled to 60 ~ 70 DEG C, by the flooding of fused mass with 90 ~ 150ml 80 ~ 100 DEG C, and clean nickel crucible with the water of 30 ~ 60ml 80 ~ 100 DEG C, collect washing lotion and leaching liquor, be mixed to get test solution a.
Described acidizing process refers to the hydrochloric acid adding 30ml 37% in test solution a, is heated to solution limpid, cooling 2 ~ 3min, then adds the perchloric acid of 80 ml 70%, obtains test solution b.
After described precipitation operation refers to and test solution b is heated to release the white cigarette of perchloric acid, cover liquid container opening, the residue continuing to be heated to be fuming starts crystallization and presents thick, cooling 2 ~ 3min, slowly add successively again people 20ml by volume ratio 1:1 37% hydrochloric acid and the hydrochloric acid solution that mixes of water, the water that 100ml is 80 ~ 100 DEG C, 10 by volume ratio 1:6 30% hydrogen peroxide and the mixed liquor that mixes of water, with stirring rod stir to test solution without minute bubbles, obtain test solution c.
Described filter progress refers to and is filtered by test solution c middling speed quantitative filter paper, with 80 ~ 100 DEG C by volume ratio 5:95 37% hydrochloric acid and the dilute hydrochloric acid solution that mixes of water, washing liquid container and stirring rod 5 ~ 6 times, and washing lotion is filtered, again by same dilute hydrochloric acid solution washing filter paper and precipitation, until washing lotion is dripped in the ammonium thiocyanate solution of 10.0g/L, the nondiscolouring of ammonium thiocyanate solution, then water washing filter paper and the precipitation of 80 ~ 100 DEG C is used, until washing lotion is dripped in the liquor argenti nitratis ophthalmicus of 2.0g/L, liquor argenti nitratis ophthalmicus nondiscolouring, obtains precipitation.
Described calcination operation refers to porcelain crucible precipitation and filter paper being placed in constant weight, porcelain crucible is placed in high temperature furnace, to precipitation and filter paper evaporates, ashing, calcination, calcination 100 ~ 150min is incubated after the temperature of high temperature furnace rises to 1000 ± 50 DEG C from room temperature, again porcelain crucible is placed in exsiccator and is cooled to room temperature, weigh.
In described calculation process, in nitrogenize reinforcing agent sample, the calculating of silicone content is undertaken by following formula:
Si（%）=
100
In formula:
M
1---the gross mass of calcination postprecipitation and porcelain crucible, g;
M
---the quality of porcelain crucible, g;
M
---the quality of sample, g;
0.4674---silicon dioxide is scaled the reduction coefficient of silicon.
The volume of the nickel crucible that dissolution process uses is 50ml.
Melt temperature described in dissolution process is 600 DEG C, and the melting time is 7min.
Melt temperature described in dissolution process is 600 DEG C, and the melting time is 7min, refers to after the furnace temperature of high temperature furnace is risen to 600 DEG C, then the nickel crucible filling nitrogenize reinforcing agent sample to be measured, sodium nitrate and NaOH is placed in high temperature furnace heats 7min.
Described in dissolution process by the flooding of fused mass with 90 ~ 150ml 80 ~ 100 DEG C, refer to the water soaking fused mass of 80 ~ 100 DEG C that at every turn add 30ml, with band rubber tip glass bar clean fused mass, 3 ~ 5 times repeatedly.
Described in acidizing process to be heated to solution limpid, heating-up temperature is 80 ~ 100 DEG C.
Being heated to by test solution b described in precipitation operation releases the white cigarette of perchloric acid, and heating-up temperature is 120 DEG C.
The cover liquid container opening of precipitation described in operation can be at liquid container upper cover upper surface ware or evaporating dish.
Precipitation operation and the stirring rod described in filter progress are the glass bar of band rubber tip.
Washing lotion being dripped described in filter progress refers in the ammonium thiocyanate solution of 10.0g/L drips 3 on the surface plate of ammonium thiocyanate solution filling 1ml 10.0g/L by washing lotion; Described washing lotion is dripped to refer in the liquor argenti nitratis ophthalmicus of 2.0g/L washing lotion is dripped 3 on the surface plate of liquor argenti nitratis ophthalmicus filling 1ml 2.0g/L.
The volume of the porcelain crucible that calcination operation uses is 40ml.
Programming rate described in calcination operation is 18 DEG C/min.
Calcination time described in calcination operation is 120min.
The high temperature furnace that calcination operation uses is DC-B8/13 type controllable temperature high temperature furnace.
The water that dissolution process, precipitation operation and filter progress use is any one in distilled water or deionized water.
Room temperature described in calcination operation is 20 ~ 25 DEG C.
Detection method of the present invention is applicable to the mensuration of the nitrogenize reinforcing agent sample of silicone content 10 ~ 35%.
embodiment 1
---the detection of silicone content in nitrogenize reinforcing agent
Nitrogenize reinforcing agent sample to be measured is pulverized and sieved to granularity≤0.125mm.Take 0.2000g sample, with 0.5g solid nitric acid sodium, the mixing of 4.0g solid sodium hydroxide is placed in the nickel crucible of 50ml, and surface coverage 1.0g solid sodium hydroxide, is cooled to 65 DEG C after 600 DEG C of melting 7min.By the distilled water lixiviate of fused mass with 120ml 80 ~ 100 DEG C, add the distilled water immersion fused mass of 80 ~ 100 DEG C of 30ml at every turn, clean fused mass with the glass bar of band rubber tip, 4 times repeatedly, and clean nickel crucible with the water of 45ml 80 ~ 100 DEG C, collect washing lotion and leaching liquor, be mixed to get test solution a.In test solution a, add the hydrochloric acid of 30ml 37%, on electric hot plate, be heated to 90 DEG C of solution limpid, cooling 2 ~ 3min, then add the perchloric acid of 80 ml 70%, obtain test solution b.After test solution b being heated on electric hot plate 120 DEG C of white cigarettes of releasing perchloric acid, at Sheng liquid beaker upper cover upper surface ware, the residue continuing to be heated to be fuming starts crystallization and presents thick, cooling 2 ~ 3min, again along beaker inwall slowly add successively people 20ml by volume ratio 1:1 37% hydrochloric acid and the hydrochloric acid solution that mixes of distilled water, the distilled water that 100ml is 80 ~ 100 DEG C, 10 by volume ratio 1:6 30% hydrogen peroxide and the mixed liquor that mixes of distilled water, with band rubber tip glass bar stir to test solution without minute bubbles, obtain test solution c.The test solution c middling speed quantitative filter paper being placed in glass funnel is filtered, with 80 ~ 100 DEG C by volume ratio 5:95 37% hydrochloric acid and the dilute hydrochloric acid solution that mixes of distilled water, the glass bar of washing liquid container and band rubber tip 6 times, and washing lotion is filtered, again by same dilute hydrochloric acid solution washing filter paper and precipitation, until washing lotion is dripped 3 on the surface plate of ammonium thiocyanate solution filling 1ml 10.0g/L, the nondiscolouring of ammonium thiocyanate solution.Then use distilled water washing filter paper and the precipitation of 80 ~ 100 DEG C, until washing lotion is dripped 3 on the surface plate of liquor argenti nitratis ophthalmicus filling 1ml 2.0g/L, liquor argenti nitratis ophthalmicus nondiscolouring, obtains precipitation.Precipitation and filter paper are placed in the 40ml porcelain crucible of constant weight, porcelain crucible are placed in DC-B8/13 type controllable temperature high temperature furnace, with the programming rate of 18 DEG C/min to precipitation and filter paper evaporates, ashing, calcination.After the temperature of high temperature furnace rises to 1000 ± 50 DEG C from room temperature, be incubated calcination 120min, then porcelain crucible is placed in exsiccator is cooled to room temperature, weigh.
In described nitrogenize reinforcing agent sample, the calculating of silicone content is undertaken by following formula:
Si（%）=
100
=
×100
=23.39%
In formula:
M
1---the gross mass of calcination postprecipitation and porcelain crucible, 21.7452g;
M
---the quality of porcelain crucible, 21.6451g;
M
---the quality of sample, 0.2000g;
0.4674---silicon dioxide is scaled the reduction coefficient of silicon.
embodiment 2
---the detection of silicone content in nitrogenize reinforcing agent
Detection method is with embodiment 1.
In described nitrogenize reinforcing agent sample, the calculating of silicone content is undertaken by following formula:
Si（%）=
100
=
×100
=26.62%
In formula:
M
1---the gross mass of calcination postprecipitation and porcelain crucible, 20.4567g;
M
---the quality of porcelain crucible, 20.3428g;
M
---the quality of sample, 0.2000g;
0.4674---silicon dioxide is scaled the reduction coefficient of silicon.
embodiment 3
---the detection of silicone content in nitrogenize reinforcing agent
Detection method is with embodiment 1.
In described nitrogenize reinforcing agent sample, the calculating of silicone content is undertaken by following formula:
Si（%）=
100
=
×100
=28.53%
In formula:
M
1---the gross mass of calcination postprecipitation and porcelain crucible, 21.7843g;
M
---the quality of porcelain crucible, 21.6622g;
M
---the quality of sample, 0.2000g;
0.4674---silicon dioxide is scaled the reduction coefficient of silicon.
embodiment 4
---the detection of silicone content in nitrogenize reinforcing agent
Detection method is with embodiment 1.
In described nitrogenize reinforcing agent sample, the calculating of silicone content is undertaken by following formula:
Si（%）=
100
=
×100
=31.29%
In formula:
M
1---the gross mass of calcination postprecipitation and porcelain crucible, 20.6894g;
M
---the quality of porcelain crucible, 20.5555g;
M
---the quality of sample, 0.2000g;
0.4674---silicon dioxide is scaled the reduction coefficient of silicon.
embodiment 5
---the precision of detection method of the present invention, accuracy, recovery experiment
(1) Precision Experiment
Experimental technique: select 5 nitrogenize reinforcing agent samples, carry out silica test respectively by detection method of the present invention, calculate relative standard deviation, experimental result is in table 1.
The Precision Experiment result of table 1 detection method of the present invention
| Sample | Measured value (%) | Mean value (%) | Relative standard deviation RSD |
| Sample 1 | 18.50，18.60，18.50，18.55，18.76 | 18.58 | 0.58 |
| Sample 2 | 25.12，25.19，25.26，24.89，24.89 | 25.07 | 0.68 |
| Sample 3 | 27.60，27.67，27.76，27.95，28.00 | 27.80 | 0.63 |
| Sample 4 | 29.61，29.87，29.91，30.01，30.05 | 29.89 | 0.58 |
| Sample 5 | 31.50，31.66，31.81，31.85，31.90 | 31.73 | 0.54 |
(2) accuracy experiment
Experimental technique: select 4 standard models, carry out silica test by detection method of the present invention respectively, each sample parallel measures 5 times, and experimental result is in table 2.
The accuracy experimental result of table 2 detection method of the present invention
(3) recovery experiment
Experimental technique: select 1 nitrogenize reinforcing agent sample, add the silicon of different amount respectively, measure by detection method of the present invention, each sample parallel analyzes 4 times, averages, and trying to achieve the recovery is 99.2 ~ 102.3%, and experimental result is in table 3.
The recovery experimental result of table 3 detection method of the present invention
| Sample | Measured value (mg) | Addition (mg) | Record total value (mg) | The recovery (%) |
| Sample 1 | 18.50 | 5.00 | 41.96 | 99.2 |
| Sample 2 | 18.50 | 10.00 | 47.23 | 102.3 |
| Sample 3 | 18.50 | 15.00 | 52.33 | 102.2 |
| Sample 4 | 18.50 | 20.00 | 56.88 | 99.4 |
From above-mentioned experimental result, the analysis result deviation of detection method of the present invention is little, precision, and accuracy all can meet analyzes requirement, and analysis speed is fast, simple to operate, easily grasps, has higher application value.
Claims (10)
1. fast, the detection method of silicone content in nitrogenize reinforcing agent accurately, it is characterized in that comprising pulverizing, dissolving, acidifying, precipitation, filtration, calcination and calculation process, specifically comprise:
A, pulverizing: nitrogenize reinforcing agent sample to be measured is pulverized and sieved to granularity≤0.125mm;
B, dissolving: take 0.2000g sample, with 0.5g solid nitric acid sodium, the mixing of 4.0g solid sodium hydroxide is placed in nickel crucible, surface coverage 1.0g solid sodium hydroxide, after 590 ~ 610 DEG C of melting 6 ~ 8min, be cooled to 60 ~ 70 DEG C, by the flooding of fused mass with 90 ~ 150ml 80 ~ 100 DEG C, and clean nickel crucible with the water of 30 ~ 60ml 80 ~ 100 DEG C, collect washing lotion and leaching liquor, be mixed to get test solution a;
C, acidifying: the hydrochloric acid adding 30ml 37% in test solution a, is heated to solution limpid, cooling 2 ~ 3min, then add the perchloric acid of 80 ml 70%, obtain test solution b;
D, precipitation: after test solution b being heated to release the white cigarette of perchloric acid, cover liquid container opening, the residue continuing to be heated to be fuming starts crystallization and presents thick, cooling 2 ~ 3min, slowly add successively again people 20ml by volume ratio 1:1 37% hydrochloric acid and the hydrochloric acid solution that mixes of water, the water that 100ml is 80 ~ 100 DEG C, 10 by volume ratio 1:6 30% hydrogen peroxide and the mixed liquor that mixes of water, with stirring rod stir to test solution without minute bubbles, obtain test solution c;
E, filtration: test solution c middling speed quantitative filter paper is filtered, with 80 ~ 100 DEG C by volume ratio 5:95 37% hydrochloric acid and the dilute hydrochloric acid solution that mixes of water, washing liquid container and stirring rod 5 ~ 6 times, and washing lotion is filtered, again by same dilute hydrochloric acid solution washing filter paper and precipitation, until washing lotion is dripped in the ammonium thiocyanate solution of 10.0g/L, the nondiscolouring of ammonium thiocyanate solution, then water washing filter paper and the precipitation of 80 ~ 100 DEG C is used, until washing lotion is dripped in the liquor argenti nitratis ophthalmicus of 2.0g/L, liquor argenti nitratis ophthalmicus nondiscolouring, obtains precipitation;
F, calcination: porcelain crucible precipitation and filter paper being placed in constant weight, porcelain crucible is placed in high temperature furnace, to precipitation and filter paper evaporates, ashing, calcination, calcination 100 ~ 150min is incubated after the temperature of high temperature furnace rises to 1000 ± 50 DEG C from room temperature, again porcelain crucible is placed in exsiccator and is cooled to room temperature, weigh;
G, calculating: in described nitrogenize reinforcing agent sample, the calculating of silicone content is undertaken by following formula:
Si（%）=
100
In formula:
M
1---the gross mass of calcination postprecipitation and porcelain crucible, g;
M
---the quality of porcelain crucible, g;
M
---the quality of sample, g;
0.4674---silicon dioxide is scaled the reduction coefficient of silicon.
2. detection method according to claim 1, it is characterized in that the melt temperature described in process B is 600 DEG C, the melting time is 7min.
3. detection method according to claim 1, it is characterized in that described in process B by the flooding of fused mass 90 ~ 150ml 80 ~ 100 DEG C, refer to the water soaking fused mass of 80 ~ 100 DEG C that at every turn add 30ml, clean fused mass, 3 ~ 5 times repeatedly with the glass bar of band rubber tip.
4. detection method according to claim 1, is characterized in that the stirring rod described in step D and E is be with the glass bar of rubber tip.
5. detection method according to claim 1, is characterized in that washing lotion being dripped described in operation E refers in the ammonium thiocyanate solution of 10.0g/L and washing lotion is dripped 3 on the surface plate of ammonium thiocyanate solution filling 1ml 10.0g/L; Described washing lotion is dripped to refer in the liquor argenti nitratis ophthalmicus of 2.0g/L washing lotion is dripped 3 on the surface plate of liquor argenti nitratis ophthalmicus filling 1ml 2.0g/L.
6. detection method according to claim 1, is characterized in that the programming rate of the calcination described in operation F is 18 DEG C/min.
7. detection method according to claim 1, is characterized in that the calcination time described in operation F is 120min.
8. detection method according to claim 1, the water that it is characterized in that described in process B, D and E is any one in distilled water or deionized water.
9. detection method according to claim 1, is characterized in that the room temperature described in operation F is 20 ~ 25 DEG C.
10. detection method according to claim 1, is characterized in that described detection method is applicable to the mensuration of the nitrogenize reinforcing agent sample of silicone content 10 ~ 35%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111122373A (en) * | 2018-10-30 | 2020-05-08 | 贝特瑞新材料集团股份有限公司 | Method for testing silicon content in nano silicon-based material |
| CN113654936A (en) * | 2021-06-28 | 2021-11-16 | 浙江安力能源有限公司 | Na-beta' -Al2O3Method for measuring sodium content in solid electrolyte |
-
2014
- 2014-12-01 CN CN201410708061.3A patent/CN104502217A/en active Pending
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| Title |
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| 张巍 等: "高氯酸脱水重量法测定矿石中高含量硅", 《当代化工》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111122373A (en) * | 2018-10-30 | 2020-05-08 | 贝特瑞新材料集团股份有限公司 | Method for testing silicon content in nano silicon-based material |
| CN111122373B (en) * | 2018-10-30 | 2024-01-02 | 贝特瑞新材料集团股份有限公司 | Method for testing silicon content in nano silicon-based material |
| CN113654936A (en) * | 2021-06-28 | 2021-11-16 | 浙江安力能源有限公司 | Na-beta' -Al2O3Method for measuring sodium content in solid electrolyte |
| CN113654936B (en) * | 2021-06-28 | 2024-01-23 | 浙江安力能源有限公司 | Na-beta' -Al 2 O 3 Method for measuring sodium content in solid electrolyte |
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Application publication date: 20150408 |