CN105381855A - Superfine barium sulfate powder and production method thereof - Google Patents
Superfine barium sulfate powder and production method thereof Download PDFInfo
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- CN105381855A CN105381855A CN201510682697.XA CN201510682697A CN105381855A CN 105381855 A CN105381855 A CN 105381855A CN 201510682697 A CN201510682697 A CN 201510682697A CN 105381855 A CN105381855 A CN 105381855A
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- barium sulfate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/466—Conversion of one form of calcium sulfate to another
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/90—Other properties not specified above
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses superfine barium sulfate powder. The mesh number of the superfine barium sulfate powder is 400-8,000, in the words, the grain size of the powder is 1.6 microns-38 microns, and the acute angle ratio of the edge ridge part of the powder is smaller than 15%. The production method of the powder comprises the following steps that firstly, beneficiation is carried out, beneficiation screening and classified desliming are carried out on raw ore through a reselection device, and the raw ore is conveyed into a jaw crusher through a shovel conveying device; secondly, primary crushing is carried out, and the jaw crusher is utilized for primarily crushing concentrate into concentrate blocks; thirdly, secondary crushing is carried out, and the concentrate blocks are crushed into concentrate grits through a hammer type crusher; fourthly, classified crushing is carried out, and the concentrate grits in a storage hopper are conveyed into a classified crushing system through a feeding device arranged below the storage hopper; fifthly, winnowing collecting is carried out, and the concentrate grits enter a cloth bag collector after passing a deslagging device; sixthly, grinding modification is carried out, and the concentrate grits enter a modification device to be subjected to grinding modification; and seventhly, packaging is carried out for storage. The classified crushing system is utilized for carrying out multi-level physical grinding on materials, the acute angle ratio of the edge ridge part of the powder is smaller than 15%, and the leveling property and covering power of the powder are better.
Description
Technical field
The present invention relates to super-fine powder field, be specifically related to a kind of ultra-fine barium sulfate powder and production method thereof.
Background technology
Barium sulfate, odorless, tasteless powder, density 4.25-4.5, decomposition temperature > 1600 DEG C, be dissolved in hot concentrated sulfuric acid, water-soluble, diluted acid, alcohol hardly, aqueous suspension solution is to litmus paper in neutral, and barium sulfate powder uses as filler because its distinctive character can be used to the industries such as coating, ink, papermaking, industrial plastic, rubber.Add in coating barium sulfate powder can improve film gloss, reduce film and grow dim, do not affect the physical and mechanical property such as film adhesive and elasticity, improve the whiteness of coating, strengthening the hardness of film, is the optimal filler of powdery paints.Due to the chemical inertness of barium sulfate, as additive in production of polyester, the waterproof acid resistance of product, high temperature resistance and resistance to corrosion can be increased, also there is the function of special radiation absorption simultaneously, greatly increase the weatherability of the polymer such as plastics.If barium sulfate powder size distribution is uneven, particle diameter has big difference, its dispersive property in coating can be badly influenced, in experimental branch line, also can cause great impact to the follow-up spinning processing performance of polymer and the quality of silk, therefore during application, generally all require that barium sulfate powder has the features such as even particle size distribution, particle diameter difference is little, particle surface performance is good.
The ultra-fine barium sulfate powder that traditional physics manufactures, because easily mix calcite in raw ore, downstream user is caused in use easily foaming phenomena to occur, again because the diameter of particle prepared of physics is large, shape has corner angle mostly, cause the levelability in coating not good, cause hiding lack, time in the plastic as filler, smoothness is not good.
Chinese patent CN101254938A discloses a kind of preparation method of ultra-fine barium sulfate, the water-soluble reaction under the effect of additive of soluble sulphate and soluble barium salt is utilized to generate ultra-fine barium sulfate, its barium sulfate powder average grain diameter of making is 0.2 μm ~ 0.5 μm, particle surface pattern is good, narrow particle size distribution, is suitable for large-scale production.
But because it adopts is the method for chemical preparation barium sulfate, if sulfate and barium salt react the accessory products produced can cause to environment the destruction being difficult to make up without dealing carefully with regard to discharging or being not intended to leakage part, even if there are now some factories to adopt physical method processing barium sulfate powder, but because be adopt general ore separators or pulverizer processing powder, but do not realize full-automatic production, not only increase human cost, reduce scale and efficiency, production scene dust pollution is serious, and the poor quality of powder may be caused because of human factor.
Summary of the invention
For solving the problems of the technologies described above, a kind of ultra-fine barium sulfate powder and production method thereof are the object of the present invention is to provide, to solve that existing ultra-fine barium sulfate powder downstream product is easy to foaming, levelability is not good and easily to produce that pollution, production efficiency are low, the not high defect of powder quality in process of production.
For achieving the above object, a kind of ultra-fine barium sulfate powder of the present invention, it is characterized in that: described powder utilizes barite raw ore, carry out multistage physics mill and to obtain after carrying out removal of impurities modification, the order number of described ultra-fine barium sulfate powder is 400-8000 order (namely the particle diameter of powder is 1.6 μm-38 μm), and rib portion, the edge acute angle ratio of described powder is less than 15%.
Further, the production method of this ultra-fine barium sulfate powder, is characterized in that, described production method comprises the following steps:
Step1 ore dressing, utilizes gravitational separation equipment to carry out ore dressing screening, graded desliming to barite raw ore, then through jigging, obtains the good concentrate of quality, send device to send into jaw crusher by shovel;
Step2 mono-breaks, and utilizes jaw crusher concentrate to be tentatively broken into the concentrate block of bulk, is then transported to hammer mill by driving belt;
Step3 bis-breaks, and utilizes hammer mill that the concentrate block of bulk is ground into concentrate particle of uniform size, is then transported to storage bin hopper by driving belt;
Step4 classification grinding, the concentrate particle in storage bin hopper is transported to classification grinding system by the pay-off arranged below storage bin hopper, and concentrate particle of uniform size is milled through repetitious in classification grinding system;
Step5 selection by winnowing is collected, and the pipeline that the powder reaching requirement size in classification grinding system utilizes cyclone collector to pass through to seal, through deslagging device, then enters cloth bag collector;
Step6 grinds modification, and the barium sulfate powder after slagging-off utilizes blower fan to be entered reforming apparatus carried out grinding modification by the pipeline of sealing;
Step7 packs warehouse-in, and the pipeline that the ultra-fine barium sulfate powder after grinding modification utilizes blower fan to pass through to seal packs warehouse-in automatically.
Further, described described closed conduit comprises pipeline I, pipeline II and pipeline III, described pipeline I is horizontally disposed, described pipeline II is vertically connected to one end of pipeline I, described pipeline III is connected horizontally on the other end of pipeline II, described pipeline III one end is conduit entrance and on pipeline III, offers the feed opening be communicated with reducing mechanism, and described pipeline I is communicated with reforming apparatus.
Further, the pay-off below described storage bin hopper is provided with concentration equipment, the metal object in the concentrate particle of pulverizing to be fractionated is siphoned away, and prevents metal object from entering grinding machine internal damage grinding machine parts.
Further, described reforming apparatus comprises sensor, chemical tank, drug delivery pipe, modification cylinder and frequency-variable controller.
The present invention compared with prior art, its beneficial effect is: the production method of a kind of ultra-fine barium sulfate powder that the present invention proposes, utilize physical method to carry out classification grinding to barite raw ore and make ultra-fine barium sulfate powder, avoiding traditional chemical method for making generation chemical by-product can work the mischief to environment; And the pipeline that in production process, powder utilizes blower fan to pass through to seal shifts between each operation, stop the situation generation that airborne dust etc. affects staff's health; In addition by increasing jigging, concentration equipment and automatic reforming apparatus in production process, ensure powder in whole production until the quality problems caused because of human factor can not be there are in the process of packing and storing, this method utilizes classification grinding system to carry out multistage physics to material and mills, make rib portion, the edge acute angle ratio of powder be less than 15%, make the levelability of powder and covering power better.
Accompanying drawing explanation
Fig. 1 is production procedure schematic diagram of the present invention;
Fig. 2 is production line structural representation of the present invention;
Fig. 3 is the SEM schematic diagram of the ultra-fine barium sulfate powder of traditional mode of production;
Fig. 4 is the SEM schematic diagram of the ultra-fine barium sulfate powder that the present invention produces;
Fig. 5 is the covering power relative value comparison sheet of the ultra-fine barium sulfate powder produced of the present invention and several conventional coating additive.
Figure number and title: 1, coarse crushing device, 2, feed belt, 3, feed bin, 4, conveyer, 5, crushing and classification system, 6, cyclone collector, 7, cloth bag collector.
Detailed description of the invention
By describe in detail the present invention technology contents, structural feature, reached object and effect, hereby exemplify embodiment below and coordinate accompanying drawing to be explained in detail.
In describing the invention, it will be appreciated that, term " center ", " longitudinally ", " laterally ", " front ", " after ", " left ", " right ", " vertically ", " level ", " top ", " end ", " in ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.
Refer to shown in Fig. 1, and shown in composition graphs 2, the production method of a kind of ultra-fine barium sulfate powder provided by the invention, first, barite raw ore is sent to jaw crusher by shovel and is carried out brokenly after cleaning, jigging; And then through hammer mill carry out two break; Then the concentrate particle broken through two is admitted to hopper, the metal impurities in material are removed through conveyer, the crushing chamber of classification grinding system is delivered to again by feed arrangement, under the effect of the high voltagehigh frequency pulsation cyclonic current energy field that high speed slewing equipment produces, particle does gas-solid screw, thus form several size eddy flows, material with turn round at a high speed device and and realize ultra-fine grinding; Material after pulverizing by the pneumatic convey that rises to impeller graded region, under the effect of grading wheel centrifugal force and blower fan gravitation, realize the separation of thickness powder, underproof powder returns crushing chamber grinding again by internal classification device, qualified fine powder enters cyclone collector by grader and collects, and dusty gas is discharged by air-introduced machine and carried out packing and storing after Efficient bag type dust collector purification.The belt transmission adopted in power production process is the continus convergence in order to ensure mineral aggregate, production control cost.
Comparison diagram 3 and Fig. 4 find, the physical behavior of producing the native sulfate of barium powder obtained according to this method does not have corner angle, more levels off to spherical, can improve the smoothness of downstream client, by adding barium sulfate as filler, can reduce the cost of downstream client.
The various conventional coating additive levelability of comparison diagram 5 finds, ultra-fine barium sulfate powder application provided by the invention, in coating industry, while not increasing additive cost, improves levelability and the covering power of coating.
In sum, be only the preferred embodiment of the present invention, do not limit protection scope of the present invention with this, all equivalence changes done according to the scope of the claims of the present invention and description with modify, be all within scope that patent of the present invention contains.
Claims (5)
1. a ultra-fine barium sulfate powder, it is characterized in that: described powder utilizes barite raw ore, carry out multistage physics mill and to obtain after carrying out removal of impurities modification, the order number of described ultra-fine barium sulfate powder is 400-8000 order (namely the particle diameter of powder is 1.6 μm-38 μm), and rib portion, the edge acute angle ratio of described powder is less than 15%.
2. the production method of a kind of ultra-fine barium sulfate powder according to claim 1, it is characterized in that, described production method comprises the following steps:
Step1 ore dressing, utilizes gravitational separation equipment to carry out ore dressing screening, graded desliming to barite raw ore, then by jigging, obtains clean concentrate, send device to send into jaw crusher by shovel;
Step2 mono-breaks, and utilizes jaw crusher concentrate to be tentatively broken into the concentrate block of bulk, is then transported to hammer mill by driving belt;
Step3 bis-breaks, and utilizes hammer mill that the concentrate block of bulk is ground into concentrate particle of uniform size, is then transported to storage bin hopper by driving belt;
Step4 classification grinding, the concentrate particle in storage bin hopper is transported to classification grinding system by the pay-off arranged below storage bin hopper, concentrate particle of uniform size in classification grinding system through repeatedly milling;
Step5 selection by winnowing is collected, and the pipeline that the powder reaching requirement size in classification grinding system utilizes cyclone collector to pass through to seal, through deslagging device, then enters cloth bag collector;
Step6 grinds modification, and the barium sulfate powder after slagging-off utilizes blower fan to be entered reforming apparatus carried out grinding modification by the pipeline of sealing;
Step7 packs warehouse-in, and the pipeline that the ultra-fine barium sulfate powder after grinding modification utilizes blower fan to pass through to seal packs warehouse-in automatically.
3. a kind of ultra-fine barium sulfate powder according to claim and production method thereof, it is characterized in that: described closed conduit comprises pipeline I, pipeline II and pipeline III, described pipeline I is horizontally disposed, described pipeline II is vertically connected to one end of pipeline I, described pipeline III is connected horizontally on the other end of pipeline II, described pipeline III one end is conduit entrance and on pipeline III, offers the feed opening be communicated with reducing mechanism, and described pipeline I is communicated with reforming apparatus.
4. a kind of ultra-fine barium sulfate powder according to claim 1 and production method thereof, is characterized in that: the pay-off below described storage bin hopper is provided with concentration equipment.
5. a kind of ultra-fine barium sulfate powder according to claim 1 and production method thereof, is characterized in that: described reforming apparatus comprises sensor, chemical tank, drug delivery pipe, modification cylinder and frequency-variable controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682697.XA CN105381855A (en) | 2015-10-20 | 2015-10-20 | Superfine barium sulfate powder and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510682697.XA CN105381855A (en) | 2015-10-20 | 2015-10-20 | Superfine barium sulfate powder and production method thereof |
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| CN201510682697.XA Pending CN105381855A (en) | 2015-10-20 | 2015-10-20 | Superfine barium sulfate powder and production method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750792A (en) * | 2016-12-15 | 2017-05-31 | 湖北恒旭新材料科技股份有限公司 | A kind of preparation of extra-fine grinding modified natural barium sulfate |
| CN106966421A (en) * | 2017-03-31 | 2017-07-21 | 青岛红蝶新材料有限公司 | Medicinal barium sulfate automatically controls production technology |
| CN110711637A (en) * | 2019-09-30 | 2020-01-21 | 西安交通大学 | Low-grade lifting method for barite ore material |
| CN113182050A (en) * | 2021-04-22 | 2021-07-30 | 奈曼旗忠義砂产业有限公司 | Grinding process of high-precision barite powder |
| CN114226049A (en) * | 2022-01-21 | 2022-03-25 | 集美精化科技(广西)有限公司 | Barium sulfate impurity removal device and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750792A (en) * | 2016-12-15 | 2017-05-31 | 湖北恒旭新材料科技股份有限公司 | A kind of preparation of extra-fine grinding modified natural barium sulfate |
| CN106966421A (en) * | 2017-03-31 | 2017-07-21 | 青岛红蝶新材料有限公司 | Medicinal barium sulfate automatically controls production technology |
| CN106966421B (en) * | 2017-03-31 | 2018-10-16 | 青岛红蝶新材料有限公司 | Medicinal barium sulfate automatically controls production technology |
| CN110711637A (en) * | 2019-09-30 | 2020-01-21 | 西安交通大学 | Low-grade lifting method for barite ore material |
| CN113182050A (en) * | 2021-04-22 | 2021-07-30 | 奈曼旗忠義砂产业有限公司 | Grinding process of high-precision barite powder |
| CN114226049A (en) * | 2022-01-21 | 2022-03-25 | 集美精化科技(广西)有限公司 | Barium sulfate impurity removal device and method |
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