CN103350020B - Technique for producing silicon carbide granular sand - Google Patents
Technique for producing silicon carbide granular sand Download PDFInfo
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- CN103350020B CN103350020B CN201310266989.6A CN201310266989A CN103350020B CN 103350020 B CN103350020 B CN 103350020B CN 201310266989 A CN201310266989 A CN 201310266989A CN 103350020 B CN103350020 B CN 103350020B
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Abstract
The invention discloses a technique for producing silicon carbide granular sand. In the technique, multiple times of crushing, sieving, iron removal, detection and drying are performed on a silicon carbide material so as to obtain granular sand with high quality. The technique is simple, low in equipment investment cost and low in maintenance frequency, saves energy, and has the advantage of obvious iron removal effect.
Description
Technical field
The invention belongs to the manufacturing technique method of abrasive material, especially a kind of silicon carbide granular sand manufacturing technique method.
Background technology
Silicon carbide granular sand is also known as silicon carbide sand, carborundum subhead sand, and be generally divided into 8# ~ 320#, model is larger, and granularity is thinner.Silicon carbide granular sand is divided into green and black two kinds, is desirable abrasive material, is widely used in grinding materials and grinding tool industry.The granularity sand being greater than 320# is generally called silicon carbide micro-powder, and silicon carbide micro-powder is the desirable Linear cut sword material of solar energy crystal silicon chip, semiconductor.The granularity sand that this process is produced is mainly used in the raw material providing high-quality for producing silicon carbide micro-powder.
The raw material of coarse crushing technique are the silicon carbide bulk materials (being called for short silicon carbide materials or block material) that particle diameter is less than 300mm, and after coarse crushing, the carborundum of particle diameter within the scope of 0.5 ~ 5mm is called granularity sand.Coarse crushing is the important procedure during granularity sand is produced, and the seed output and quality of its product depends on the selection of process and the selection of equipment to a great extent.
Shi Yong Bo technological process and shortcoming thereof before Mu:
A. do not have dry link, material can not be dried in time, and when winter produces, water content exceeds standard, and affects next yield rate of producing operation and output.
B. there is no deironing link, cause needing in next process to use a large amount of sulfuric acid to carry out pickling to remove free iron impurity, add production cost, reduce production efficiency.
C. yield poorly.Every in the past bar production line was per hour can only produce 4 ~ 5 tons of granularity sands, per hourly after improvement can produce 6 ~ 7 tons of granularity sands.
D. workshop condition is poor, and airborne dust is serious.At the storage bin sidepiece of pipeline, a set of dust pelletizing system is installed, has efficiently solved the problem that workshop airborne dust is serious.
Summary of the invention
The object of the invention is to, providing a kind of, process is simple, equipment investment expense, frequency of maintenance are low, the significant silicon carbide granular sand manufacturing technique method of economize energy, de-ferrous effect.
Object of the present invention realizes mainly through following technical process.
1). silicon carbide materials particle diameter being less than 300mm puts feed bin into, enters jaw crusher through feed bin, carries out first time fragmentation, makes particle size range become 10 ~ 40mm.
2). the material of particle size range 10 ~ 40mm mm sends storage bin to by elevator, and shakes the oscillating feeder of feed instrument control by material with 1200 ~ 1900r/min speed by electricity, sends into one-level pair roller and carries out second time fragmentation.
3). with elevator, the material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation.
4). it is that the 1# vibratory sieve of 3.35 ~ 5mm sieves that material delivers to aperture by elevator after tertiary crushing.Unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, and the material passed through directly enters aperture 0.4 ~ 0.55mm 2# vibratory sieve, again sieves.
5). after screening, use magnetic separator to carry out deironing, gained and granularity sand of the present invention the material not by the 2# vibratory sieve of aperture 0.4 ~ 0.55mm.
6). can directly enter feed bin barrelling by the material of the 2# vibratory sieve of aperture 0.4 ~ 0.55mm, preferably be not promoted to high-order storing intermediate bunker through conveyer belt, bucket elevator by the material of the 2# vibratory sieve of aperture 0.4 ~ 0.55mm, and shake the oscillating feeder of feed instrument control by material with 1200 ~ 1900r/min speed by electricity, send into dryer, when material moisture higher than 0.01% time, enable dryer to dry material, bake out temperature remains on 80 DEG C ~ 110 DEG C, and drying time is 2 ~ 3 hours.
When above-mentioned not by the material moisture of the 2# vibratory sieve of aperture 0.4 ~ 0.55mm 0.01% and following time, then without the need to drying, can directly enter product line or packaging.
Above-mentioned material moisture detection method is as follows: sample thief 200g ~ 300g, weighing its weight is a, use drying plant that temperature is remained on 80 DEG C ~ 110 DEG C to dry in laboratory, drying time is 2 ~ 3 hours, again weighing its weight is b, records the water content of sample for [(a-b)/a] * 100%.
Present invention process is simple, equipment investment expense, frequency of maintenance are low, economize energy, have the significant advantage of de-ferrous effect.
Accompanying drawing explanation
Fig. 1 is present invention process schematic flow sheet.
Detailed description of the invention
embodiment 1: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1200r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 4mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.4mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.4mm, again through conveyer belt, bucket elevator is promoted to high-order storing intermediate bunker, and shake the oscillating feeder of feed instrument control by material with 1200r/min speed by electricity, send into dryer, when material moisture higher than 0.01% time enable dryer material dried, bake out temperature remains on 80 DEG C, drying time is 3 hours, gained and granularity sand of the present invention.
embodiment 2: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1500r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 4.5mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.55mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.55mm, carry out water content detection, sample thief 200g ~ 300g, weighing its weight is a, use drying plant that temperature is remained on 80 DEG C ~ 110 DEG C to dry in laboratory, drying time is 2 ~ 3 hours, again weighing its weight is b, record the water content of sample for [(a-b)/a] * 100%, when detecting sample moisture content and being greater than 0.01%, again through conveyer belt, bucket elevator is promoted to high-order storing intermediate bunker, and shake the oscillating feeder of feed instrument control by material with 1900r/min speed by electricity, send into dryer, when sample moisture content higher than 0.01% time enable dryer material dried, bake out temperature remains on 80 DEG C, drying time is 3 hours, gained and granularity sand of the present invention.
embodiment 3: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1900r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 5mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.5mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.5mm, material moisture detection is carried out: sample thief 200g ~ 300g to the material after deironing is capable, weighing its weight is a, use drying plant that temperature is remained on 80 DEG C ~ 110 DEG C to dry in laboratory, drying time is 2 ~ 3 hours, again weighing its weight is b, record the water content of sample for [(a-b)/a] * 100%, when detecting material moisture and being greater than 0.01%, through conveyer belt, bucket elevator is promoted to high-order storing intermediate bunker, and shake the oscillating feeder of feed instrument control by material with 1200 ~ 1900r/min speed by electricity, send into dryer, when sample moisture content higher than 0.01% time enable dryer material dried, bake out temperature remains on 80 DEG C, drying time is 3 hours, when material moisture is below 0.01%, without the need to drying, material directly enters product line, skip dry link.
embodiment 4: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1600r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 4.75mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.55mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.55mm, material after deironing carries out water content detection, when material moisture 0.01% and following time, without the need to drying, material directly enters product line, skip dry link.Material moisture detection method is as follows: sample thief 200 ~ 300g, weighing its weight is a, use drying plant that temperature is remained on 80 DEG C to dry in laboratory, drying time is 3 hours, and again weighing its weight is b, records the water content of sample for [(a-b)/a] * 100%, when sample moisture content higher than 0.01% time enable dryer material dried, bake out temperature remains on 80 DEG C, and drying time is 3 hours, gained and granularity sand of the present invention.
embodiment 5: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1440r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 3.35mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.425mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.425mm, when material moisture higher than 0.01% time enable dryer material dried, when material moisture is below 0.01%, without the need to drying, material directly enters product line, skip dry link.
embodiment 6: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1800r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 5mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.55mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.55mm, material after deironing carries out material moisture detection, when material moisture higher than 0.01% time enable dryer material dried, bake out temperature remains on 80 DEG C, drying time is 3 hours, when material moisture is below 0.01%, without the need to drying, material directly enters product line, skip dry link.
embodiment 7: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1600r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 4mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.425mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.425mm, material after deironing carries out material moisture detection, when material moisture is below 0.01%, without the need to drying, material directly enters product line, skip dry link, when material moisture higher than 0.01% time enable dryer material dried, bake out temperature remains on 80 DEG C, drying time is 3 hours, gained and granularity sand of the present invention.
embodiment 8: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1500r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 4.75mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.55mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.55mm, material after deironing first carries out material moisture detection, when material moisture is below 0.01%, without the need to drying, material directly enters product line, skip dry link.When material moisture higher than 0.01% time enable dryer material dried, bake out temperature remains on 80 DEG C, and drying time is 3 hours, gained and granularity sand of the present invention.
embodiment 9: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1800r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 4.75mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.425mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.425mm, material after deironing first carries out material moisture detection, when material moisture higher than 0.01% time enable dryer material dried, bake out temperature remains on 80 DEG C, drying time is 3 hours, gained and granularity sand of the present invention.When material moisture is below 0.01%, without the need to drying, material directly enters product line, skips dry link.
embodiment 10: silicon carbide materials particle diameter being less than 300mm puts feed bin into, jaw crusher is entered through feed bin, carry out the first time broken bulk becoming particle diameter 10 ~ 40mm, storage bin is sent to elevator, and shake the oscillating feeder of feed instrument control by material with 1300r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation, material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation, then delivering to aperture by elevator is that the 1# vibratory sieve of 4mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, send into the 2# vibratory sieve of aperture 0.5mm, after again sieving, magnetic separator is used to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0. 5mm, gained and granularity sand of the present invention.
Claims (3)
1. a silicon carbide granular sand manufacturing technique method, is characterized in that realizing mainly through following technical process:
1). silicon carbide materials particle diameter being less than 300mm puts feed bin into, enters jaw crusher through feed bin, carries out first time fragmentation, makes particle size range become 10 ~ 40mm;
2). send the material of above-mentioned particle diameter 10 ~ 40mm to storage bin by elevator, and shake the oscillating feeder of feed instrument control by material with 1200 ~ 1900r/min speed by electricity, send into one-level pair roller and carry out second time fragmentation;
3). with elevator, the material after one-level roller pair breaking is sent into secondary pair roller and carry out third time fragmentation;
4). aperture delivered to by material after tertiary crushing is that the 1# vibratory sieve of 3.35 ~ 5mm sieves, unsanctioned material returns secondary pair roller through conveyer belt and carries out again broken, the material passed through, directly enters the 2# vibratory sieve of aperture 0.4 ~ 0.55mm, again sieves;
5). again after screening, use magnetic separator to carry out deironing to granularity sand the material not by the 2# vibratory sieve of aperture 0.4 ~ 0.55mm, gained and granularity sand, enter product line.
2. silicon carbide granular sand manufacturing technique method according to claim 1, it is characterized in that: described step 5) after deironing, gained material shakes the oscillating feeder of feed instrument control by material with 1200 ~ 1900r/min speed by electricity, send into dryer to dry, bake out temperature remains on 80 DEG C ~ 110 DEG C, and drying time is 2 ~ 3 hours.
3. silicon carbide granular sand manufacturing technique method according to claim 2, it is characterized in that: step 5) material after described deironing first carries out water content detection, detection method is as follows: sample thief 200g ~ 300g, weighing its weight is a, use drying plant that temperature is remained on 80 DEG C ~ 110 DEG C to dry in laboratory, drying time is 2 ~ 3 hours, again weighing its weight is b, record the water content of sample for [(a-b)/a] * 100%, when sample moisture content higher than 0.01% time send into dryer material dried, when sample moisture content 0.01% and following time, material directly enters product line.
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| CN201310266989.6A CN103350020B (en) | 2013-06-29 | 2013-06-29 | Technique for producing silicon carbide granular sand |
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| CN201310266989.6A CN103350020B (en) | 2013-06-29 | 2013-06-29 | Technique for producing silicon carbide granular sand |
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| CN103350020A CN103350020A (en) | 2013-10-16 |
| CN103350020B true CN103350020B (en) | 2015-05-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103923605B (en) * | 2014-03-14 | 2015-12-02 | 唐山圣诺纳微科技有限公司 | A kind of making method of silicon carbide ball |
| CN106824529B (en) * | 2017-01-13 | 2018-07-27 | 泉州永春固力机械有限公司 | A kind of overhead transmission line ceramic insulator pug processing auxiliary machinery |
| CN108163859A (en) * | 2018-01-02 | 2018-06-15 | 宁夏星辰新材料有限公司 | A kind of production technology of silicon carbide sand |
| CN108855544A (en) * | 2018-07-11 | 2018-11-23 | 湖南淳湘农林科技有限公司 | A kind of tea cake pre-processes broken processing method and system |
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