CN110127732A - A kind of application of high pressure blasting procedure in silicon-steel magnesium oxide production - Google Patents
A kind of application of high pressure blasting procedure in silicon-steel magnesium oxide production Download PDFInfo
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- CN110127732A CN110127732A CN201910310486.1A CN201910310486A CN110127732A CN 110127732 A CN110127732 A CN 110127732A CN 201910310486 A CN201910310486 A CN 201910310486A CN 110127732 A CN110127732 A CN 110127732A
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- Prior art keywords
- high pressure
- magnesium oxide
- silicon
- steel
- particle
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
Abstract
The invention discloses a kind of application of high pressure blasting procedure in silicon-steel magnesium oxide production, comprising the following steps: step 1: light magnesium oxide tentatively disperses；Step 2: high pressure explosion disperses agglomerated particle；Step 3: high temperature aquation.The present invention uses the principle of high pressure explosion, light magnesium oxide raw material is put into water and is stirred at room temperature 5-30 minutes, after powder tentatively disperses in water, it will be handled in slurry pipeline transport to high pressure homogenizer, treated, and slurry particle agglomeration is opened, in subsequent high temperature hydration process, the thick and stiff particle of generation is reduced, and yield improves.Innovation of the invention is for the first time to apply the principle of high pressure explosion in silicon-steel magnesium oxide production, so that the thick and stiff particle generated in hydration process is reduced, improve raw material availability, final silicon-steel magnesium oxide product quality has very big promotion, magnesia particle diameter distribution situation can be preferably controlled, stable processing technique is controllable.
Description
Technical field
The present invention relates to magnesia production technical field, specially a kind of high pressure blasting procedure is in silicon-steel magnesium oxide production
Using.
Background technique
Orientation silicon steel must carry out secondary recrystallization and purification steel processing in the high annealing stage, and steel band is in height in order to prevent
It is adhered to one another when temperature annealing, silicon-steel magnesium oxide interleaving agent need to be applied in steel strip surface.In high annealing, steel strip surface is applied
Chemical reaction (2MgO+SiO2 → Mg2SiO4) occurs for the oxidation film that steel strip surface generates when magnesia and decarburizing annealing, forms silicon
Sour magnesium bottom, this is the key that influence insulating properties between steel band lamination, directly affects the quality of grain-oriented Si steel sheet.Meanwhile in high temperature
Annealing stage magnesia barrier coat promotes desulfurization, denitrification reaction, has purified steel.
In silicon-steel magnesium oxide production process, raw materials used major part is light magnesium oxide powder, and light magnesium oxide is in water
It is influenced during change by factors such as pulp density, hydration temperature, hydration time, stirring conditions, while aquation effect and oxygen
The property breath breath for changing magnesium itself is related, such as reactivity, particle diameter distribution, microscopic appearance, impurity content.Magnesia partial size it is small and
There is aquation when centainly distribution, pattern defect are more relatively easy.In hydration process, some dispersible particles exist light magnesium oxide
It unites in water, disperses not open in whipping process, the thorough adhesion of when high temperature aquation is generated as thick and stiff particle after final reaction,
It is removed in dedoping step, so that coarse fodder, waste material increase, raw material availability is reduced, while gained silicon-steel magnesium oxide product
Credit rating decline.
Summary of the invention
Present invention solves the technical problem that be to overcome in the light magnesium oxide hydration process of the prior art thick and stiff particle compared with
More defects provides a kind of application of high pressure blasting procedure in silicon-steel magnesium oxide production.A kind of high pressure blasting procedure is in silicon steel
Application in magnesia production improves raw material availability and yield with that can reduce the thick and stiff particle generated in hydration process, and
And the features such as silicon-steel magnesium oxide product quality can be promoted.
To achieve the above object, the invention provides the following technical scheme: a kind of high pressure blasting procedure is produced in silicon-steel magnesium oxide
In application, comprising the following steps:
Step 1: light magnesium oxide tentatively disperses；
Step 2: high pressure explosion disperses agglomerated particle；
Step 3: high temperature aquation.
Preferably, the concrete technology flow process of the first step are as follows: raw material is existed with light magnesium oxide by certain material-water ratio example
It puts into disperser in the case where opening stirring, stirs 5-30 minutes at room temperature, specific time view room temperature height and slurry point
Situation is dissipated to determine.
Preferably, the concrete technology flow process of the second step are as follows: the slurry tentatively dispersed is pumped into high pressure homogenizer,
Depending on the settable pressure 20-80MPa of raw material condition, pressure is higher, and the particle dispersion reunited in preliminary dispersion process is better.
Preferably, the concrete technology flow process of the third step are as follows: the slurry after high pressure explosion is pumped into pyroreaction kettle
In, hydration temperature, heating rate, hydration time are set, corresponding additive is added, stirring is opened and starts aquation.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is that the principle of high pressure explosion is utilized, and material powder is improved in silicon-steel magnesium oxide production process in aquation
Dispersibility in the process reduces the generation of thick and stiff particle, improves raw material availability.
Innovation of the invention is for the first time to apply the principle of high pressure explosion in silicon-steel magnesium oxide production, so that
The thick and stiff particle generated in hydration process is reduced, and improves raw material availability.Final silicon-steel magnesium oxide product quality has very big
It is promoted, can preferably control magnesia particle diameter distribution situation, stable processing technique is controllable.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of high pressure blasting procedure answering in silicon-steel magnesium oxide production
With, comprising the following steps:
Step 1: light magnesium oxide tentatively disperses, the concrete technology flow process that light magnesium oxide tentatively disperses are as follows: use raw material
Light magnesium oxide is put into disperser by the ratio of water to material example of 100:0.05wt% in the case where opening and stirring, and is stirred at room temperature
5 minutes；
Step 2: high pressure explosion disperses agglomerated particle, high pressure explosion disperses the concrete technology flow process of agglomerated particle are as follows: will be first
The slurry of step dispersion is pumped into high pressure homogenizer, sets 20MPa for pressure according to the case where raw material, pressure is higher, tentatively
The particle dispersion reunited in dispersion process is better；
Step 3: high temperature aquation, the concrete technology flow process of high temperature aquation are as follows: the slurry after high pressure explosion is pumped into high temperature
In reaction kettle, hydration temperature is set as 120 DEG C, heating rate is 5 DEG C/min, hydration time 0.5h, and corresponding addition is added
Acetic acid, magnesium acetate etc. can be selected in agent, additive, opens stirring later and starts aquation.
Embodiment 2:
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of high pressure blasting procedure answering in silicon-steel magnesium oxide production
With, comprising the following steps:
Step 1: light magnesium oxide tentatively disperses, the concrete technology flow process that light magnesium oxide tentatively disperses are as follows: use raw material
Light magnesium oxide is put into disperser by the ratio of water to material example of 100:1.5wt% in the case where opening and stirring, and is stirred at room temperature
20 minutes；
Step 2: high pressure explosion disperses agglomerated particle, high pressure explosion disperses the concrete technology flow process of agglomerated particle are as follows: will be first
The slurry of step dispersion is pumped into high pressure homogenizer, sets 50MPa for pressure according to the case where raw material, pressure is higher, tentatively
The particle dispersion reunited in dispersion process is better；
Step 3: high temperature aquation, the concrete technology flow process of high temperature aquation are as follows: the slurry after high pressure explosion is pumped into high temperature
In reaction kettle, hydration temperature is set as 160 DEG C, heating rate is 10 DEG C/min, hydration time 3h, and corresponding addition is added
Acetic acid, magnesium acetate etc. can be selected in agent, additive, opens stirring later and starts aquation.
Embodiment 3:
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of high pressure blasting procedure answering in silicon-steel magnesium oxide production
With, comprising the following steps:
Step 1: light magnesium oxide tentatively disperses, the concrete technology flow process that light magnesium oxide tentatively disperses are as follows: use raw material
Light magnesium oxide is put into disperser by the ratio of water to material example of 100:3wt% in the case where opening and stirring, and stirs 30 at room temperature
Minute；
Step 2: high pressure explosion disperses agglomerated particle, high pressure explosion disperses the concrete technology flow process of agglomerated particle are as follows: will be first
The slurry of step dispersion is pumped into high pressure homogenizer, sets 80MPa for pressure according to the case where raw material, pressure is higher, tentatively
The particle dispersion reunited in dispersion process is better；
Step 3: high temperature aquation, the concrete technology flow process of high temperature aquation are as follows: the slurry after high pressure explosion is pumped into high temperature
In reaction kettle, hydration temperature is set as 200 DEG C, heating rate is 15 DEG C/min, hydration time 5h, and corresponding addition is added
Acetic acid, magnesium acetate etc. can be selected in agent, additive, opens stirring later and starts aquation.
Working principle:
In order to solve the problems, such as that thick and stiff particle is more in light magnesium oxide hydration process, we use the original of high pressure explosion
Light magnesium oxide raw material is put into water and is stirred at room temperature 5-30 minutes by reason, after powder tentatively disperses in water, by slurry pipeline transport
It is handled in high pressure homogenizer.Treated slurry particle agglomeration is opened, in subsequent high temperature hydration process, generation it is thick
Grit is reduced, and yield improves.
The present invention is that the principle of high pressure explosion is utilized, and material powder is improved in silicon-steel magnesium oxide production process in aquation
Dispersibility in the process reduces the generation of thick and stiff particle, improves raw material availability.
Compared with prior art, the beneficial effects of the present invention are:
Innovation of the invention is for the first time to apply the principle of high pressure explosion in silicon-steel magnesium oxide production, so that
The thick and stiff particle generated in hydration process is reduced, and improves raw material availability.Final silicon-steel magnesium oxide product quality has very big
It is promoted, can preferably control magnesia particle diameter distribution situation, stable processing technique is controllable.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of application of high pressure blasting procedure in silicon-steel magnesium oxide production, which comprises the following steps:
Step 1: light magnesium oxide tentatively disperses；
Step 2: high pressure explosion disperses agglomerated particle；
Step 3: high temperature aquation.
2. a kind of application of the high pressure blasting procedure according to claim 1 in silicon-steel magnesium oxide production, it is characterised in that: institute
State the concrete technology flow process of the first step are as follows: throw raw material in the case where opening and stirring by certain material-water ratio example with light magnesium oxide
Enter into disperser, stir 5-30 minutes at room temperature, specific time view room temperature height and mud dispersivity situation determine.
3. a kind of application of the high pressure blasting procedure according to claim 1 in silicon-steel magnesium oxide production, it is characterised in that: institute
State the concrete technology flow process of second step are as follows: the slurry tentatively dispersed is pumped into high pressure homogenizer, it is settable depending on raw material condition
Pressure 20-80MPa, pressure is higher, and the particle dispersion reunited in preliminary dispersion process is better.
4. a kind of application of the high pressure blasting procedure according to claim 1 in silicon-steel magnesium oxide production, it is characterised in that: institute
State the concrete technology flow process of third step are as follows: the slurry after high pressure explosion is pumped into pyroreaction kettle, setting hydration temperature rises
Corresponding additive is added in warm rate, hydration time, opens stirring and starts aquation.
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| CN201910310486.1A CN110127732A (en) | 2019-04-18 | 2019-04-18 | A kind of application of high pressure blasting procedure in silicon-steel magnesium oxide production |
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| CN201910310486.1A CN110127732A (en) | 2019-04-18 | 2019-04-18 | A kind of application of high pressure blasting procedure in silicon-steel magnesium oxide production |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443425A (en) * | 1981-12-09 | 1984-04-17 | Calgon Corporation | Magnesium oxide composition for coating silicon steel |
| JPS6445716A (en) * | 1987-08-14 | 1989-02-20 | Asahi Glass Co Ltd | Magnesium oxide powder |
| CN101067085A (en) * | 2007-06-15 | 2007-11-07 | 海城精华矿产有限公司 | Prepn of natural magnesium hydroxide for inorganic no-halogen fire retardant |
| CN102303878A (en) * | 2011-07-29 | 2012-01-04 | 中国科学院青海盐湖研究所 | Method for preparing silicon steel grade magnesium oxide with pyrolyzed magnesium oxide |
| CN104495881A (en) * | 2014-12-19 | 2015-04-08 | 中南大学 | Process for preparing high-purity silicon steel magnesium oxide from magnesium hydroxide |
| CN104709927A (en) * | 2014-12-30 | 2015-06-17 | 上海实业振泰化工有限公司 | Preparation method of silicon-steel grade magnesium oxide |
-
2019
- 2019-04-18 CN CN201910310486.1A patent/CN110127732A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443425A (en) * | 1981-12-09 | 1984-04-17 | Calgon Corporation | Magnesium oxide composition for coating silicon steel |
| JPS6445716A (en) * | 1987-08-14 | 1989-02-20 | Asahi Glass Co Ltd | Magnesium oxide powder |
| CN101067085A (en) * | 2007-06-15 | 2007-11-07 | 海城精华矿产有限公司 | Prepn of natural magnesium hydroxide for inorganic no-halogen fire retardant |
| CN102303878A (en) * | 2011-07-29 | 2012-01-04 | 中国科学院青海盐湖研究所 | Method for preparing silicon steel grade magnesium oxide with pyrolyzed magnesium oxide |
| CN104495881A (en) * | 2014-12-19 | 2015-04-08 | 中南大学 | Process for preparing high-purity silicon steel magnesium oxide from magnesium hydroxide |
| CN104709927A (en) * | 2014-12-30 | 2015-06-17 | 上海实业振泰化工有限公司 | Preparation method of silicon-steel grade magnesium oxide |
Non-Patent Citations (3)
| Title |
|---|
| 吴旭洲 等: "硅钢板退火用氧化镁的试制", 《山西冶金》 * |
| 郑水林 等: "《非金属矿加工技术与应用手册》", 31 May 2005, 冶金工业出版社 * |
| 马力言 等: "硅钢级氧化镁的研究进展", 《无机盐工业》 * |
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Application publication date: 20190816 |