CN1051031C - Method and special apparatus for production of powdery products - Google Patents
Method and special apparatus for production of powdery products Download PDFInfo
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- CN1051031C CN1051031C CN90105186A CN90105186A CN1051031C CN 1051031 C CN1051031 C CN 1051031C CN 90105186 A CN90105186 A CN 90105186A CN 90105186 A CN90105186 A CN 90105186A CN 1051031 C CN1051031 C CN 1051031C
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Abstract
The present invention relates to a closed cycle process using step-by-step acceleration pulverization and sending final stage grading output back to the front stage in a multi-stage pulverization and air classification process, and a device for producing a powdery product by using the process. The present invention is utilized to carry out a work test of a diatomaceous earth filter aid. Under the conditions of the same material, the same performance and the similar product, the product of the present invention and the foreign imported similar product are simultaneously used for a beer filtration experiment, which indicates that the wine filtration effect is better than that of the imported product.
Description
The invention provides a kind of production method and special-purpose process units thereof of powdery product.The production method of powdery product is to take multistage pulverizing and air current classifying technology; The device that is used to produce this product comprises the multistage materials crusher that joins in turn, conveying fan, grader and product separator, mass transport pipeline therebetween.Belong to pulverizing and separating solids material technology in the operation.
In the industries such as chemical industry, building materials, metallurgy, material grinding and classification have to adopt and pulverize the simplified method that adds screening plant and corresponding technology, and the high product produced in yields mode of selecting multistage pulverizing and air current classifying equipment and technology for use is also arranged.The simplified method grading effect is poor, and power consumption is many, and only is applicable to the production of individual product.A kind of mode equipment in back is huge, the investment of founding the factory is many.Cut size and abandon the quarrel particle diameter and can not adjust continuously, and, also relatively stricter to the requirement of raw material and process conditions, make this method only be fit to the production of particular types and granularity requirements.
Above-mentioned deficiency at prior art, the invention provides a kind of powder-product that can process the different grain size distribution, improve product yield and production efficiency, and operating environment can improve, labour intensity can further reduce, and is fit to the production method and special-purpose pulverizing, the grading plant of diatomite, kaolin, Cab-O-sil, lime, cement, precipitated calcium carbonate, graphite powder, pigment etc.
The object of the invention is by taking following technical measures to realize.
Employing is formed first order classification by beater grinder, blower fan, adjustable speed grader, by Universalpulverizer, blower fan, adjustable speed grader are formed second level classification, Universalpulverizer, blower fan, adjustable speed grader are formed third level classification, the product separator that its input port communicates through conveyance conduit and the first order, second level delivery outlet, the sack cleaner that process air delivery pipe and product separator communicate connects the feedback pipeline of third level grader delivery outlet and second level grader inlet and the production system that finished bin constituted; And the first order, the second level, third level pulverizer rotating speed increase progressively in 800-8000 rev/min of scope, and the first order, second level Critical Grading particle diameter are 5-120 μ, and the critical particle diameter of the third level is 10-150 μ.
The present invention has reduced the load and the power consumption of each grade pulverizing and grader; Pulverizing and classification efficiency have been improved; Avoid unnecessary degree of depth pulverizing and reduced the quarrel amount of abandoning; Improved product yield and quality, non-compliant material can not enter among the product.Because this device Critical Grading particle diameter can in very large range be adjusted (the critical particle diameter of first and second grade classification can be adjusted in 5-120 μ scope, and the third level can be adjusted) as requested in 10-150 μ; So can in time adjust the grading technology condition according to production quality monitoring, change Granularity Distribution, guarantee product quality, adapt to the variation of material performance and other manufacturing condition.The processing request that in addition, can also be suitable for different material and product.To the material that is difficult to pulverize, as long as suitably select pulverizer model and rotating speed promptly can obtain satisfied effect.
Accompanying drawing is a device position schematic diagram provided by the present invention.
This device specifically comprises: material inlet and disintegrating machine are communicated with, and a classification outlet and next circulation pulverizer communicate, another classification delivery outlet directly and the grading machine communicate two cyclic systems of serial connection; Has the final stage cyclic system that classification output feeds back to the connecting pipe of prime; The grading machine that joins with each delivery outlet of grader in two cyclic systems; The deduster that joins with grading machine output pipe.
The present invention has adopted three grades of pulverizing, three grades of adjustable speed air current classifyings and final stage classification output to feed back to the technological process of prime.Material is tentatively pulverized at first order pulverizer (1) under negative pressure, delivers to first order grader (3) by blower fan (2) and carries out classification.The satisfactory material of particle diameter is delivered to product separator (10) by air-flow.Undesirable coarse fodder is pulverized once more through second level pulverizer (4), delivers to second level grader (6) classification by blower fan (5).The fines stream of telling is sent to product separator, and coarse fodder is flowed through and carried out classification again by third level grader (8) after third level pulverizer (7) degree of depth is pulverized; Under bigger critical particle diameter, abandon quarrel then.Thick material flow is sent the classification once more of second level grader back to by blower fan in the output.Satisfactory materials flow enters product separator; Undesirable coarse fodder stream returns third level pulverizer again to be continued to pulverize, and quarrel is abandoned in classification then.So circulation is gone down, and meets the requirements until granularity.Fine powder is delivered to sack cleaner (14) by blower fan (13) and is reclaimed clean air emptying.One, two, three pulverizer rotating speed increases progressively in 800-8000 rev/min of scope in the technology of the present invention.
(9) be reject bin, (11) upset valve, (12) product storehouse, (15) upset valve, (16) blower fan.
Owing to adopted above-mentioned technological process, reduced the load and the power consumption of each grade pulverizer and grader; The efficient and the quality of pulverizing and classification have been improved; Not only non-compliant coarse fodder can not enter among the product, and has avoided unnecessary degree of depth pulverizing and reduced the quarrel amount of abandoning.Therefore product yield of the present invention and quality are better than prior art.
In addition, Critical Grading particle diameter of the present invention can in very large range be adjusted as requested continuously.The critical particle diameter of first and second grade can be adjusted in 5-120 μ scope; The third level can be adjusted in 10-150 μ scope.So can in time adjust the grading technology condition according to product quality monitoring, change Granularity Distribution, guarantee product quality; The variation that makes it to be adapted to feedstock property and produce other process conditions.In addition, can also be suitable for the requirement of different material and product processing.Material or the thinner product of granularity pulverized for difficulty, as long as suitably select the model of pulverizer to improve the ratio of reduction (or rotating speed), adjust multistage Critical Grading grain through etc. process conditions, can obtain satisfied effect.
Utilize the present invention to carry out the super-cell processing experiment.At identical material, the product that the gained performance is identical and close, the present invention is than prior art (promptly not being with speed governing and degenerative air current classifying method) product yield height, and it is low to abandon the quarrel rate.Pulverize because reduced the unnecessary degree of depth, improved grading effect, thus the fine product of 0-5 μ and greater than the crude product ratio of 60 μ also than prior art (circle stream method) low (table 1).Prepared product and external imported product are with being used for the beer filtration experiment, and filter wine effect is better than imported product (table 2).
Below by embodiment, further describe technical characterictic of the present invention.
Embodiment 1
Raw material, natural calcined diatomite, feed size 0-60mm, first order pulverizer are hammer, rotating speed 800r./min..Discharging-material size is less than 1mm.Second and third level is a Universalpulverizer, and rotating speed is respectively 2500,3500r./min..First order Critical Grading particle diameter is 20 μ, the second level 30 μ, the third level 50 μ.Product yield 89.5%, fine product 7.5% are abandoned quarrel 2.5%; Product permeability 0.10..
Embodiment 2
Raw material, cosolvent calcined diatomite, granularity 0-120mm.First order pulverizer is a hammer, rotating speed 1000r./min.; The second level, the third level are Universalpulverizer, and rotating speed is respectively 3000,4000r./min..First order Critical Grading particle diameter 30 μ, the second level 40 μ, the third level 60 μ.Product yield 89.0%, fine product 7.0% are abandoned quarrel 3.5%; Product permeability 1.8D..
Embodiment 3
Raw material and equipment are with example 2.With second level Critical Grading grain through being adjusted to 50 μ; All the other conditions are with example 2.Product yield 90.0%, fine product 6.4% are abandoned quarrel 3.1%; Product permeability 2.00.
Embodiment 4
Raw material, graphite block, granularity is less than 50mm.First order pulverizer is a hammer, rotating speed 2000r./min.Discharging-material size is less than 3mm.The second level is Universalpulverizer, rotating speed 4000r./mir.; The third level is a CM type pulverizer (sledge mill), rotating speed 8000r./min..First order Critical Grading particle diameter 80 μ; The second level 100 μ; The third level is 150 μ.Product yield 92%, fine product 7.2% are abandoned quarrel 0.3%, and all over products can pass through 150 mesh sieves.
The present invention is for the hardness height, and the material that granularity is big can increase the one-level jaw crusher before the first order is pulverized.Other process conditions should expect at random that also character and product requirement do corresponding adjustment.
Table 1 product yield and size distribution are relatively
| Technology | ％ | Size distribution (%) | Permeability (D) | |||||||||
| Product | Fine product | Abandon quarrel | 0-5μ | 5-10μ | 10-20μ | 20-30μ | 30-40μ | 40-50μ | 50-60μ | ＞60μ | ||
| Prior art | 83.3 | 7.7 | 9.0 | 5.1 | 10.7 | 43.3 | 22.2 | 8.6 | 1.8 | 2.3 | 5.9 | 2.0 |
| The present invention | 90.0 | 6.4 | 3.1 | 1.9 | 10.2 | 38.5 | 27.4 | 8.9 | 2.5 | 5.5 | 5.1 | 2.0 |
| The present invention | 89.0 | 7.0 | 3.5 | 3.0 | 15.2 | 47.9 | 19.6 | 4.0 | 3.1 | 2.6 | 4.6 | 1.8 |
Table 2 filtered beer effect relatively
| Product | Total flow | Filter capacity for liquor | Unit consumption | Time | Average rate of filtering | Turbidity |
| (Kg) | (T) | (Kg) | (h) | (T/h) | (EBC) | |
| Import | 240 | 149 | 1.61 | 7.17 | 20.8 | 0.2 |
| The present invention | 180 | 164 | 1.10 | 6.42 | 25.6 | 0.2 |
Claims (4)
1, a kind of production method of powdery product, comprise multistage pulverizing and air current classifying step, it is characterized in that adopting by beater grinder, blower fan, the adjustable speed grader is formed first order classification, by Universalpulverizer, blower fan, the adjustable speed grader is formed second level classification, Universalpulverizer, blower fan, the adjustable speed grader is formed third level classification, its input port is through the conveyance conduit and the first order, the product separator that second level delivery outlet communicates, the sack cleaner that process air delivery pipe and product separator communicate connects the feedback pipeline of third level grader delivery outlet and second level grader inlet and the production system that finished bin constituted; And the first order, the second level, third level pulverizer rotating speed increase progressively in 800-8000 rev/min of scope, and the first order, second level Critical Grading particle diameter are 5-120 μ, and the critical particle diameter of the third level is 10-150 μ.
2. the production method of powdery product according to claim 1 is characterized in that in the first order classification, pulverizer is a hammer when pulverizing feed size less than the natural calcined diatomite of 60mm, 800 rev/mins of rotating speeds, and first order Critical Grading particle diameter is 20 μ; In the classification of the second level, use Universalpulverizer, 2500 rev/mins of rotating speeds, second level Critical Grading particle diameter 30 μ; In the third level classification, use Universalpulverizer, 3500 rev/mins of rotating speeds, third level Critical Grading particle diameter 50 μ.
3. the production method of powdery product according to claim 1 is characterized in that in the first order classification, pulverizer is a hammer, 1000 rev/mins of rotating speeds, Critical Grading particle diameter 30 μ when pulverizing feed size less than the cosolvent calcined diatomite of 120mm; In the classification of the second level, using Universalpulverizer, rotating speed is 3000 rev/mins, Critical Grading particle diameter 40 μ; In the third level classification, use Universalpulverizer, 4000 rev/mins of rotating speeds, Critical Grading particle diameter 60 μ;
4. the production method of powdery product according to claim 1 is characterized in that for the graphite block material of granularity less than 50mm, in the first order classification, pulverizer is a hammer, 2000 rev/mins of rotating speeds, Critical Grading particle diameter 80 μ; Universalpulverizer, 4000 rev/mins of rotating speeds, second level Critical Grading particle diameter 100 μ are adopted in the second level; The third level is adopted CM type pulverizer, 8000 rev/mins of rotating speeds, third level Critical Grading particle diameter 150 μ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90105186A CN1051031C (en) | 1990-08-01 | 1990-08-01 | Method and special apparatus for production of powdery products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90105186A CN1051031C (en) | 1990-08-01 | 1990-08-01 | Method and special apparatus for production of powdery products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1058547A CN1058547A (en) | 1992-02-12 |
| CN1051031C true CN1051031C (en) | 2000-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90105186A Expired - Fee Related CN1051031C (en) | 1990-08-01 | 1990-08-01 | Method and special apparatus for production of powdery products |
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| CN (1) | CN1051031C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081088C (en) * | 1999-07-23 | 2002-03-20 | 清华大学 | Fine disitegrating method for mixed plant material |
| CN100415362C (en) * | 2001-01-21 | 2008-09-03 | 尹兴伊 | Method for producing insect-resisting agent by using low-temp. rotary kiln to roast kieselguhr |
| CN103230825B (en) * | 2013-04-29 | 2016-03-23 | 嵊州宝钒硅藻土有限公司 | A kind of diatomite crushing drying device |
| CN103801439B (en) * | 2014-02-17 | 2016-04-13 | 湖南省宁乡县长宁炭素制品有限公司 | The process equipment of high speed disintegrator and ultra micro graphite powder |
| CN104826721B (en) * | 2015-04-28 | 2017-04-12 | 西南科技大学 | System for preparing straw micro powder |
-
1990
- 1990-08-01 CN CN90105186A patent/CN1051031C/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 建材机械与设备统一书号150404179 1981.12. 1 北京市建筑材料工业学校编中国建筑工业出版社出版 * |
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| Publication number | Publication date |
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| CN1058547A (en) | 1992-02-12 |
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Effective date of registration: 20050812 Address after: 264200 C518 building, Weihai hi tech Industrial Development Zone, Shandong, China Patentee after: Weihai Rixing Technology Development Co., Ltd. Address before: 264200, building 40, building 403, West Street, Huancui District, Shandong, Weihai Patentee before: Yin Xingyi |
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