CN104694016A - Method for producing polishing powder employing coal series kaolinite - Google Patents
Method for producing polishing powder employing coal series kaolinite Download PDFInfo
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- CN104694016A CN104694016A CN201510072276.5A CN201510072276A CN104694016A CN 104694016 A CN104694016 A CN 104694016A CN 201510072276 A CN201510072276 A CN 201510072276A CN 104694016 A CN104694016 A CN 104694016A
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- powder
- kaolinite
- ore pulp
- fine grinding
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention relates to the field of preparation of polishing powder, in particular to a method for producing polishing powder employing coal series kaolinite. The method comprises the following steps: crushing the coal series kaolinite; grinding the crushed kaolinite into particles; burning the particles once to obtain kaolinite powder; carrying out wet fine grinding on the kaolinite powder to form ore pulp, and grading; dewatering and drying the degraded ore pulp; and calcining for the second time, and calcining the dried ore pulp powder for the second time, so as to obtain polishing powder. The powder with relatively low can be obtained after once calcination, and then is subjected to wet fine grinding, so that energy consumption can be reduced; a white aid is added to the ground powder to carry out secondary calcination, so that the whiteness of the product is improved.
Description
Technical field
The present invention relates to polishing powder preparation field, is the method utilizing coal series kaolinite to produce polishing powder specifically.
Background technology
Polishing powder is mainly used in the polishing of the article of the glossy requirements such as jewel, opticglass, artistic glass, TV and graphoscope, medicine equipment and component of machine.Its effect body is by the absorption between polished die and polished part and grinding, improves the smooth finish of surface to be machined, is mainly used in the polishing of workpiece fine grinding.Polishing powder is made up of metal oxide components such as cerium oxide, aluminum oxide, silicon oxide, ferric oxide, zirconium white, chromic oxide usually.And since the eighties, coal series kaolinite is found in a large number, it is as a kind of raw material of very important ceramic, and the physicals by means of its excellence occupies very important status always.And because the quality of coal series kaolinite is high, detrimental impurity is few, makes it become desirable feedstock.But only have the enterprise of only a few to produce qualified product at present, most of enterprise is due to aspects such as raw material, technique and equipment, and quality product and product cost are always unsatisfactory.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of rational technology, the coal series kaolinite that utilizes that the quality product of production is high produces the method for polishing powder.
The present invention solves the problems of the technologies described above adopted technical scheme: utilize coal series kaolinite to produce the method for polishing powder, it comprises the following steps:
(1) broken, coal series kaolin stone ore is broken;
(2) roughly grind, the kaolinite after fragmentation is worn into particle;
(3) once calcine, particle is once calcined, obtain kaolinite powder;
(4) fine grinding classification, adopts wet method to be finely ground into ore pulp and classification in kaolinite powder;
(5) dewatered drying, dries the pulp dewatering after classification;
(6) secondary clacining, carries out secondary clacining by the ore pulp powder after drying, obtains polishing powder.
As preferably, the granular size after corase grind is 15 ~ 45 μm.
As preferably, a described calcining temperature is 400 ~ 800 DEG C.
As preferably, add dispersion agent when fine grinding, dispersion agent adopts glyceryl monostearate.
As preferably, the mass ratio of dispersion agent and kaolinite powder is 2 ~ 2.5:1000
As preferably, the ore pulp size of powder particles after classification is 3 ~ 5 μm.
As preferably: described secondary clacining temperature is 1200 ~ 1400 DEG C.
As preferably, add improver when secondary clacining, improver accounts for 1 ~ 3% of total mass.
As preferably, described improver is mixed by cleaned coal, sodium sulfate and sodium-chlor and forms.
As preferably, described cleaned coal: sodium sulfate: the mass ratio of sodium-chlor is 10: 0.3: 0.2.
As can be known from the above technical solutions, the present invention can obtain the lower powder of hardness after adopting once calcining, then carries out wet method fine grinding to powder, can reduce energy consumption; Then improver is added to the powder after fine grinding and carry out secondary clacining, improve the whiteness of product.
Embodiment
Introduce the method for production polishing powder of the present invention in detail below in conjunction with embodiment, it comprises the following steps:
Fragmentation, adopts crusher to carry out fragmentation coal series kaolin stone ore;
Corase grind, wears into 15 ~ 45 μm of particles by the kaolinite after fragmentation, as coarse abrasive grains is too large, after calcining, whiteness is poor; As coarse abrasive grains is too little, the energy consumption consumed on the one hand is high, and the hardness of particle is large on the other hand, is unfavorable for fine grinding; And wear into 15 ~ 45 μm of particles and can ensure under the less prerequisite of energy consumption, the whiteness not only after calcining is good, and impurity is less.
Once calcine, once calcined by particle, temperature is 400 ~ 800 DEG C, can remove water of constitution like this, and the kaolinite powder obtained is metakaolin;
Fine grinding classification, adopt wet method to be finely ground into ore pulp in kaolinite powder, add water and dispersion agent during fine grinding, dispersion agent adopts glyceryl monostearate, and the mass ratio of dispersion agent and kaolinite powder is advisable with 2 ~ 2.5:1000; After fine grinding, ore pulp adopts centrifugal classification, gets particle diameter 3 ~ 5 μm of pulp dewaterings to dry; Due to the burning of organic, fixed carbon and volatilization and the mechanical loss in a calcination process, fine grinding process materials can reduce, and the fine grinding process process that to be a consumed energy more; Due to the minimizing of handled thing doses, reduce energy expenditure from a side.Material after fine grinding is easy to dry dispersion, due to the viscous properties of kaolin self, material is caused to be difficult to after fine grinding be reduced into dry state powder before burning, such material is as easy as rolling off a log in calcination process becomes sintering by bonding originally, particularly when mineral content meltable in material is higher, sintering situation is even more serious, and pole is unfavorable for the dispersion of burning rear material, still needs with ultra-fine equipment ultra-fine once again after thus burning; And after fine grinding process is placed in calcination process, then can avoid this situation; This is because calcined kaolin self no longer has cohesiveness, very easily disperse after oven dry.
Secondary clacining, the ore pulp powder after drying is carried out secondary clacining, and calcining temperature is 1200 ~ 1400 DEG C, adds improver when secondary clacining, and improver accounts for 1 ~ 3% of total mass; Improver is mixed by cleaned coal, sodium sulfate and sodium-chlor and forms, and cleaned coal: sodium sulfate: the mass ratio of sodium-chlor is 10: 0.3: 0.2, thus it is better to obtain whiteness, satisfactory polishing powder.
Embodiment 1
Crusher is adopted to carry out fragmentation and roughly grind into the particle of 15 μm coal series kaolin stone ore, again once 1.5h is calcined to particle, calcining temperature is 400 ~ 500 DEG C, then the glyceryl monostearate fine grinding of water and 0.2% is added, then centrifugal classification is carried out, get particle diameter 3 μm of pulp dewaterings and dry, the improver that the cleaned coal, sodium sulfate, the sodium-chlor that are 10: 0.3: 0.21 by mass ratio that add 1% again form carries out secondary clacining, calcining temperature is 1200 DEG C, time 3h, finally obtains whiteness and reaches more than 95 standard compliant polishing powders.
Embodiment 2
Crusher is adopted to carry out fragmentation and roughly grind into the particle of 30 μm coal series kaolin stone ore, again once 1h is calcined to particle, calcining temperature is 600 ~ 700 DEG C, then the glyceryl monostearate fine grinding of water and 0.2% is added, then centrifugal classification is carried out, get particle diameter 4 μm of pulp dewaterings and dry, the improver that the cleaned coal, sodium sulfate, the sodium-chlor that are 10: 0.3: 0.21 by mass ratio that add 2% again form carries out secondary clacining, calcining temperature is 1300 DEG C, time 2.5h, finally obtains whiteness and reaches more than 95 standard compliant polishing powders.
Embodiment 3
Crusher is adopted to carry out fragmentation and roughly grind into the particle of 45 μm coal series kaolin stone ore, again once 1h is calcined to particle, calcining temperature is 800 DEG C, then the glyceryl monostearate fine grinding of water and 0.25% is added, then centrifugal classification is carried out, get particle diameter 5 μm of pulp dewaterings and dry, the improver that the cleaned coal, sodium sulfate, the sodium-chlor that are 10: 0.3: 0.21 by mass ratio that add 3% again form carries out secondary clacining, calcining temperature is 1400 DEG C, time 2h, finally obtains whiteness and reaches more than 95 standard compliant polishing powders.
Above-mentioned embodiment is used for illustrative purposes only, and be not limitation of the present invention, the those of ordinary skill of relevant technical field, without departing from the spirit and scope of the present invention, can also make various change and modification, therefore all equivalent technical schemes also should belong to category of the present invention.
Claims (10)
1. utilize coal series kaolinite to produce the method for polishing powder, it comprises the following steps:
(1) broken, coal series kaolin stone ore is broken;
(2) roughly grind, the kaolinite after fragmentation is worn into particle;
(3) once calcine, particle is once calcined, obtain kaolinite powder;
(4) fine grinding classification, adopts wet method to be finely ground into ore pulp and classification in kaolinite powder;
(5) dewatered drying, dries the pulp dewatering after classification;
(6) secondary clacining, carries out secondary clacining by the ore pulp powder after drying, obtains polishing powder.
2. method according to claim 1, is characterized in that: the granular size after corase grind is 15 ~ 45 μm.
3. method according to claim 1, is characterized in that: a described calcining temperature is 400 ~ 800 DEG C.
4. method according to claim 1, is characterized in that: add dispersion agent when fine grinding, and dispersion agent adopts glyceryl monostearate.
5. method according to claim 4, is characterized in that: the mass ratio of dispersion agent and kaolinite powder is 2 ~ 2.5:1000.
6. method according to claim 1, is characterized in that: the ore pulp size of powder particles after classification is 3 ~ 5 μm.
7. method according to claim 1, is characterized in that: described secondary clacining temperature is 1200 ~ 1400 DEG C.
8. method according to claim 1, is characterized in that: add improver when secondary clacining, and improver accounts for 1 ~ 3% of total mass.
9. method according to claim 8, is characterized in that: described improver is mixed by cleaned coal, sodium sulfate and sodium-chlor and forms.
10. method according to claim 9, is characterized in that: described cleaned coal: sodium sulfate: the mass ratio of sodium-chlor is 10: 0.3: 0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510072276.5A CN104694016A (en) | 2015-02-12 | 2015-02-12 | Method for producing polishing powder employing coal series kaolinite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510072276.5A CN104694016A (en) | 2015-02-12 | 2015-02-12 | Method for producing polishing powder employing coal series kaolinite |
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| CN104694016A true CN104694016A (en) | 2015-06-10 |
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| CN201510072276.5A Pending CN104694016A (en) | 2015-02-12 | 2015-02-12 | Method for producing polishing powder employing coal series kaolinite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745015A (en) * | 2017-03-01 | 2017-05-31 | 易军 | A kind of preparation method for brightening black talc powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415577A (en) * | 2002-09-28 | 2003-05-07 | 内蒙古三保高岭土有限公司 | Treatment and production technique for calcining kaolin |
| CN101139468A (en) * | 2007-08-14 | 2008-03-12 | 武汉地大创新材料有限公司 | Preparation technique of calcination kaoline for butyl rubber plug |
| CN103952083A (en) * | 2014-04-09 | 2014-07-30 | 贵州亿科新材料有限公司 | Method for producing polishing powder by hard kaolin |
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2015
- 2015-02-12 CN CN201510072276.5A patent/CN104694016A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415577A (en) * | 2002-09-28 | 2003-05-07 | 内蒙古三保高岭土有限公司 | Treatment and production technique for calcining kaolin |
| CN101139468A (en) * | 2007-08-14 | 2008-03-12 | 武汉地大创新材料有限公司 | Preparation technique of calcination kaoline for butyl rubber plug |
| CN103952083A (en) * | 2014-04-09 | 2014-07-30 | 贵州亿科新材料有限公司 | Method for producing polishing powder by hard kaolin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745015A (en) * | 2017-03-01 | 2017-05-31 | 易军 | A kind of preparation method for brightening black talc powder |
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Application publication date: 20150610 |