CN104391085A - Dry-process pre-sintering sampling inspection method - Google Patents
Dry-process pre-sintering sampling inspection method Download PDFInfo
- Publication number
- CN104391085A CN104391085A CN201410697267.0A CN201410697267A CN104391085A CN 104391085 A CN104391085 A CN 104391085A CN 201410697267 A CN201410697267 A CN 201410697267A CN 104391085 A CN104391085 A CN 104391085A
- Authority
- CN
- China
- Prior art keywords
- sampling
- sample
- dry
- batch
- detecting method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention belongs to the technical field of magnetic materials and in particular relates to a dry-process pre-sintering sampling inspection method. The invention aims to provide an inspection method adopting different sampling occasions. According to the sampling inspection method disclosed by the invention, the defect that the final product is unqualified due to a certain batch of unqualified products in the conventional inspection method can be overcome. After the sampling inspection method disclosed by the invention is used, the dry rotary kiln process comprises the following steps: treating the raw materials, weighing and batching, adding an additive, performing dry-process strong mixing, pelletizing, drying, performing oxidation presintering and inspection, cooling, crushing and blending. According to the dry-process pre-sintering sampling inspection method disclosed by the invention, the sampling is performed in the oxidation presintering step of the dry rotary kiln process, and subsequent inspection is performed.
Description
Technical field
The invention belongs to technical field of magnetic materials, be specifically related to a kind of dry method Preburning material sampling and detecting method.
Background technology
Strontium ferrite powder is the important materials for the production of magnetic pole in industry, and current Strontium ferrite powder basic production technique has two kinds: dry-process rotory kiln technique and wet process rotary kiln technique.Dry-process rotory kiln technological process: Feedstock treating → weigh batching → doping → dry method by force mixed → pelletizing → oven dry → oxidation pre-burning → cooling → fragmentation → conjunction criticizes → inspection.The existing method of inspection is tested after conjunction batch, and owing to being that the fragmentation of many batches of ball material batchings obtains final products, if there is a collection of ball material property energy defective in the ball material of batching, may cause final products performance inconsistency lattice, loss is amplified.
Summary of the invention
Technical matters solved by the invention is to provide a kind of method of inspection adopting different sample time, and what sampling and detecting method of the present invention can overcome that the existing method of inspection causes defectively causes the underproof defect of final products because of certain batch.
After applying sampling and detecting method of the present invention, dry-process rotory kiln technological process is: mixed → pelletizing → ovens dry → oxidation pre-burning check → cool by force → fragmentation → conjunction of Feedstock treating → weigh batching → doping → dry method is criticized.
That is, dry method Preburning material sampling and detecting method of the present invention carries out sample in the oxidizing roasting step of dry-process rotory kiln technique, and carry out subsequent survey work.
Concrete, sampling and detecting method step is as follows:
A, in oxidizing roasting step stage, to sample at rotary kiln discharging opening;
B, sample period obtain product 18-24 ton in 24 hours continuous seepage, and the sample period is that every 45-75min sampling once the sample size of every sub-sampling is enough to be used in detecting;
C, every sub-sampling sample are deposited separately, often sample 10-14 time and form a small batch, carry out Performance Detection, obtain the performance of this batch sample after biased sample by lab scale craft;
D. the product batching that the qualified samples that performance is similar is corresponding; The product that the underproof sample of isolation performance is corresponding.
During steps A sampling, it is sampling in rotary kiln at high operating temperatures.Sampling after sample can knock open carry out in time outward appearance detect carry out anticipation; If undesirable, rotary kiln can be adjusted in real time and fire parameter.If qualified, then continue to fire parameter production by this.
In step B, the selection of sample period and frequency is the summary of empirical data: sampling frequency becomes large, can cause the increase of work on the spot amount, uneconomical; Sampling frequency diminishes, and the representativeness of taking out sample is deteriorated, and not necessarily can represent the proterties of all materials completely, allows substandard products etc. do not increased by situation about spot-check.Obtain product 18-24 ton meter according to 24 hours continuous seepage, controlling the sample period is both ensure that product sampling was representative for 45-75min/ time, and it also avoid frequent sampling increases working strength.Preferably, obtain product 18-24 ton in 24 hours continuous seepage, controlling the sample period is 60min/ suboptimum.
In step C, for the ease of investigating in the future, after biased sample, evenly can be divided at least two parts, at least portion carries out Performance Detection by lab scale craft, at least a as the reservation of backup sample number into spectrum.
In step C, often sample and form a small batch 10-14 time, preferably, often sample and form a small batch 12 times.If a certain failed sample in this small batch, then isolate the material that this small batch is corresponding; If this small batch material is qualified, then close with another lab scale craft performance test results material forms 1 large batch.
Select 10-14 batch to close batch reason being a small batch to be: every batch is too large not easily to ensure batch in stability, mix also more difficult, can machine utilization be increased; Every batch is too little, and inspection and acceptance work quantitative change is large, uses inconvenience; Therefore controlling the stability both having ensured product quality at suitable every batch, the excessive inspection also avoided increases workload.According to above-mentioned synthesis small batch method, two small batch batchings form one large batch just product population be 18-24 ton, facilitate customs inspection, checking and accepting amount is less; If the product population closing after criticizing large batch is 40-50 ton, customers' responsiveness batch internal stability is bad; If it is less to close the product population criticized, client always queries product quality.Therefore, selecting 10-14 batch to close batch is a small batch, and preferably 12 batches are closed batch be a small batch is best hybrid parameter.
The advantage of sampling method of the present invention is by sampling at rotary kiln, obtain the sample of every celestial sphere material, by ball material batching similar to sample crystallization, performance, underproof batch of isolation performance, total mixed rear inspection can be avoided to cause the underproof situation of ball material by the gross because of part failed test sample, reduce the loss caused thus.
The present invention, by simple, economy, actual effect technological transformation, can reduce the loss that the defective ball material strip of dry-process rotory kiln technique is next.The inventive method has good economy and social, has good generalization.
Embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is further described, does not therefore limit the present invention among described scope of embodiments.
For realizing the representative operation of dry-process rotory kiln technique sampling sample, with hot rolling iron scale and SrCO3 for raw material, prepare burden by certain mol proportion, add appropriate adjuvant, adjuvant is porcelain earth, then enters strong mixed machine, then enters balling disk (-sc) pelletizing, the ball made enters drying grate dries oxidation, then enters rotary kiln 1300 ± 20 DEG C of pre-burnings.
At rotary kiln discharging opening by sampling in about 200g/ hour, the sample got is put into and (is often arranged 6 lattice by 12 lattices, totally two rows) in the Sheng sample special implement that forms, within every 12 hours, mix for a collection of, mixed sample is evenly divided into 2 parts, and portion carries out Performance Detection by lab scale craft, obtains the performance when celestial sphere material, the ball material batching that performance is similar, batch isolation of performance inconsistency lattice; Another part retains, to investigate from now on as backup sample numbering.
Compare the interval time ball material properties of sample of shorter several days, composition small batch of similar nature carries out ball milling, becomes a powder batch, thus realizes the classification process to properties of product.The client that different properties of product are corresponding different, different prices, realizes the maximization of product benefit.
Sampling → Sheng sample special implement → observation crystalline state → mix → be divided into 2 parts → lab scale → batching ball milling.
Small batch after batching ball milling can also form 1 large batch by the material close with another lab scale craft performance test results, the product population forming large batch is about 18-24 ton, the properties of product that sampling method like this obtains after measuring are stablized, and facilitate customs inspection, obtain the accreditation using client.
Claims (8)
1. dry method Preburning material sampling and detecting method, is characterized in that: carry out sample in the oxidizing roasting step of dry-process rotory kiln technique, and carry out subsequent survey work.
2. dry method Preburning material sampling and detecting method according to claim 1, is characterized in that: step is as follows:
A, in oxidizing roasting step stage, to sample at rotary kiln discharging opening;
B, sample period obtain product 18-24 ton in 24 hours continuous seepage, and the sample period is that every 45-75min sampling once the sample size of every sub-sampling is enough to be used in detecting;
C, every sub-sampling sample are deposited separately, often sample 10-14 time and form a small batch, carry out Performance Detection, obtain the performance of this batch sample after biased sample by lab scale craft;
D. the product batching that the qualified samples that performance is similar is corresponding; The product that the underproof sample of isolation performance is corresponding.
3. dry method Preburning material sampling and detecting method according to claim 2, is characterized in that: during steps A sampling, is sampling in rotary kiln at high operating temperatures.
4. dry method Preburning material sampling and detecting method according to claim 2, is characterized in that: steps A sampling after sample knock open carry out in time outward appearance detect carry out anticipation;
If defective, rotary kiln can be adjusted in real time and fire parameter; If qualified, then continue to fire parameter production by this.
5. dry method Preburning material sampling and detecting method according to claim 2, is characterized in that: in step B, and the sample period obtains product 18-24 ton in 24 hours continuous seepage, and the sample period is every 60min sampling once.
6. dry method Preburning material sampling and detecting method according to claim 2, is characterized in that: in step C, often samples 12 times and forms a small batch.
7. dry method Preburning material sampling and detecting method according to claim 2, is characterized in that: in step C, after biased sample, is evenly divided at least two parts, and at least portion carries out Performance Detection by lab scale craft, at least a as the reservation of backup sample number into spectrum.
8. dry method Preburning material sampling and detecting method according to claim 2, is characterized in that: in small batch described in step C:
If a certain failed sample in this small batch, then isolate the material that this small batch is corresponding;
If this small batch material is qualified, then close with another lab scale craft performance test results material forms 1 large batch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697267.0A CN104391085A (en) | 2014-11-26 | 2014-11-26 | Dry-process pre-sintering sampling inspection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697267.0A CN104391085A (en) | 2014-11-26 | 2014-11-26 | Dry-process pre-sintering sampling inspection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104391085A true CN104391085A (en) | 2015-03-04 |
Family
ID=52609013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410697267.0A Pending CN104391085A (en) | 2014-11-26 | 2014-11-26 | Dry-process pre-sintering sampling inspection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104391085A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525982A (en) * | 2020-12-23 | 2021-03-19 | 湖南航天磁电有限责任公司 | Detection method of permanent magnetic ferrite pre-sintered material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196560A (en) * | 1997-04-17 | 1998-10-21 | 董仁祥 | Manufacturing method for ferrimagnet burn-in material |
| US20030197970A1 (en) * | 2002-04-18 | 2003-10-23 | Oakland University | Magnetoelectric multilayer composites for field conversion |
| CN102795862A (en) * | 2012-09-12 | 2012-11-28 | 济钢集团有限公司 | Device and method for preparing permanent magnet ferrite presintering material by dry process |
| CN103172387A (en) * | 2012-07-30 | 2013-06-26 | 江苏熙友磁电科技有限公司 | Method for producing permanent magnetic ferrite pre-sintering material by dry and wet process |
| CN103626486A (en) * | 2013-12-13 | 2014-03-12 | 攀枝花钢城集团有限公司 | Strontium calcium ferrite pre-sintering material and preparation method thereof |
| CN103964828A (en) * | 2014-05-06 | 2014-08-06 | 安徽大学 | High-performance permanent magnet ferrite material and preparing method thereof |
-
2014
- 2014-11-26 CN CN201410697267.0A patent/CN104391085A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196560A (en) * | 1997-04-17 | 1998-10-21 | 董仁祥 | Manufacturing method for ferrimagnet burn-in material |
| US20030197970A1 (en) * | 2002-04-18 | 2003-10-23 | Oakland University | Magnetoelectric multilayer composites for field conversion |
| CN103172387A (en) * | 2012-07-30 | 2013-06-26 | 江苏熙友磁电科技有限公司 | Method for producing permanent magnetic ferrite pre-sintering material by dry and wet process |
| CN102795862A (en) * | 2012-09-12 | 2012-11-28 | 济钢集团有限公司 | Device and method for preparing permanent magnet ferrite presintering material by dry process |
| CN103626486A (en) * | 2013-12-13 | 2014-03-12 | 攀枝花钢城集团有限公司 | Strontium calcium ferrite pre-sintering material and preparation method thereof |
| CN103964828A (en) * | 2014-05-06 | 2014-08-06 | 安徽大学 | High-performance permanent magnet ferrite material and preparing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 匡雪冬等: "永磁铁氧体预烧料新工艺及其磁特性的研究", 《梅山科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525982A (en) * | 2020-12-23 | 2021-03-19 | 湖南航天磁电有限责任公司 | Detection method of permanent magnetic ferrite pre-sintered material |
| CN112525982B (en) * | 2020-12-23 | 2023-04-18 | 湖南航天磁电有限责任公司 | Detection method of permanent magnetic ferrite pre-sintered material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Observation of high-T c superconductivity in rectangular FeSe/SrTiO 3 (110) monolayers | |
| Felicissimo et al. | SEM, EPR and ToF-SIMS analyses applied to unravel the technology employed for pottery-making by pre-colonial Indian tribes from Pantanal, Brazil | |
| Cianchetta et al. | Investigating the firing protocol of Athenian pottery production: A Raman study of replicate and ancient sherds | |
| CN104391085A (en) | Dry-process pre-sintering sampling inspection method | |
| CN101514981B (en) | Method for rapidly analyzing phase composition of building gypsum powder | |
| CN108866324A (en) | A method of high-titanium type vanadium-titanium magnetite ore matching is instructed using sintering basic characteristic | |
| CN106083034A (en) | A kind of low-loss lithium magnesium titanium series microwave dielectric ceramic | |
| CN106478099B (en) | A kind of negative thermal expansion material Sc2W4O15 and its solid-phase sintering synthetic method | |
| Zhecheva et al. | EPR studies of Li deintercalation from LiCoMnO4 spinel-type electrode active material | |
| CN104649673A (en) | Neodymium niobate ceramic having improved microwave dielectric characteristic by substituting neodymium ions with lanthanum ions | |
| CN108982564A (en) | A kind of method of grain slag XRF quantitative analysis | |
| CN103623721A (en) | Method for determining uniformity of mixed material of refractory material | |
| Spencer et al. | The use of 6 Li {7 Li}-REDOR NMR spectroscopy to compare the ionic conductivities of solid-state lithium ion electrolytes | |
| CN106348756A (en) | High-Q-value lithium-magnesium-niobium microwave dielectric ceramic | |
| CN109855988A (en) | A kind of measuring method entering furnace pellet/pelletizing drop strength for refining lead skim | |
| CN102241397A (en) | Method for manufacturing cold isostatic pressing formed graphite | |
| CN109686989B (en) | Preparation method of solid fuel cell cathode material | |
| CN104764766A (en) | Method for detecting whether explosion is caused by over-charging of lithium ion battery | |
| CN102507493A (en) | Method for measuring interaction between vitrinite and inertinite in coal during pyrolysis process | |
| Galakhov et al. | Electronic structure of defective lithium cobaltites Li x CoO 2 | |
| CN103412114B (en) | Quality comprehensive analysis method for limestone raw materials used in sleeve kiln | |
| Shunsheng et al. | Effect of heat treatment on electroresistance in Nd0. 67Sr0. 33MnO3 ceramics | |
| KR101718880B1 (en) | Preparing method of lithum-lanthanum-zirconium-based solid electrolyte | |
| CN101915773A (en) | Method for nondestructively testing 9 percent Cr steel Laves phase | |
| Yamashita et al. | Conditions of sample preparation for quantitative X-ray diffraction of cement clinker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20161102 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |