CN102502636B - Device and process for separating silicon carbide waste mortar - Google Patents
Device and process for separating silicon carbide waste mortar Download PDFInfo
- Publication number
- CN102502636B CN102502636B CN2011102925978A CN201110292597A CN102502636B CN 102502636 B CN102502636 B CN 102502636B CN 2011102925978 A CN2011102925978 A CN 2011102925978A CN 201110292597 A CN201110292597 A CN 201110292597A CN 102502636 B CN102502636 B CN 102502636B
- Authority
- CN
- China
- Prior art keywords
- group
- swirler
- cyclone separator
- silicon carbide
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Cyclones (AREA)
- Silicon Compounds (AREA)
Abstract
The invention relates to a method for extracting silicon carbide, which is characterized by being composed of at least three groups of cyclones, wherein each group is composed of at least two cyclone separators which are connected in parallel; a bottom flow operating of each cyclone separator in each group is respectively connected with a bottom flow general pipe; an overflowing opening of each cyclone separator is connected with an overflowing general pipe; the bottom flow general pipe of the previous cyclone group is connected with the overflowing general pipe of the next cyclone group and a feeding tank of the cyclone; the feeding tank is respectively connected with a feeding pipe of each cyclone separator of the cyclone group through a feeding pump; a raw material pipe is communicated with the feeding tank of the middle cyclone group; semi-product silicon carbide powder liquid is discharged by the bottom flow general pipe of the tail-grade cyclone group; silicon powder liquid is discharged by the bottom flow general pipe of the first-grade cyclone group; the silicon carbide powder liquid is treated by processes of acid washing, dehydration and drying to obtain finished-product silicon carbide. According to the invention, an alkali washing link in the traditional process is reduced and the method has the advantages of low water consumption amount, great processing capability, high level and recycling rate of the finished-product silicon carbide, small occupied area and the like; and the method further has the advantages of obviously reducing the production cost, improving the economic benefits and alleviating the labor intensity of production staff.
Description
Technical field
The present invention relates to a kind of method of extracting silicon carbide, specifically a kind of device and technology of utilizing swirler from the silicon carbide waste mortar, to separate silicon carbide.
Background technology
As everyone knows, carborundum powder is used for the line cutting of silicon single crystal, polysilicon etc., is the engineering work material of photovoltaic industry.The carborundum powder that is used for the line cutting mainly contains two sources, and the one, fresh sand is the resistance furnace of furnace core body with the carbonaceous material, the quartzy SiO of energising heating
2Generate silicon carbide with the mixture of carbon; The 2nd, waste mortar reclaims sand, namely contains the silicon carbide micro-powder recycling of impurity such as silica flour in the wire cutting liquid.Owing to by the recycling to waste mortar, the cost of cutting liquid and silicon carbide micro-powder is significantly lowered, so waste mortar recovery project is subjected to pursuing energetically of domestic section factory at present.Traditional silicon carbide waste mortar reclaims technology by flow processs such as solid-liquid separation, alkali cleaning, pickling, dryings, produce the finished product silicon carbide micro-powder, alkali cleaning link in the technology mainly is to remove the fine fraction silica flour that is mingled with in the silicon carbide, this link water loss is big, heavy contamination, length consuming time, thereby restricts the development of whole technology.
Summary of the invention
The purpose of this invention is to provide a kind of device and technology that has reduced chemical alkali cleaning link, had the separation silicon carbide waste mortar that pollution is little, production capacity is high, water consumption is low.
The present invention can realize by following measure.
A kind of device that separates the silicon carbide waste mortar, comprise cyclone separator, feed-pipe, the underflow house steward, the overflow main pipe, feed tank and charging pump, it is characterized in that being formed by three groups of swirler groups at least, at least formed by the cyclone separator of two parallel connections for every group, the underflow opening of each cyclone separator is connected with the underflow house steward respectively in every group, overflow port is connected with the overflow main pipe respectively, last swirler group the underflow house steward and the back one swirler group the overflow main pipe be connected with the feed tank of this swirler, feed tank is connected with the feed-pipe of each cyclone separator of this swirler group respectively through charging pump, mother tube is connected with the feed tank of middle swirler group, the underflow opening house steward of tail level swirler group discharges work in-process carborundum powder liquid, and the overflow main pipe of chopped-off head swirler group discharges silica flour liquid.
A kind of separation silicon carbide waste mortar technology, it is characterized in that step is: will contain the waste mortar slurries of carborundum powder and impurity silica flour by charging pump, the feed tank of swirler group in the middle of the mother tube input, feed tank is connected with the feed-pipe of each cyclone separator of this swirler group respectively through charging pump, the waste mortar slurries form in each cyclone separator of this swirler group forces rotating fluid, than great, the centrifugal force that the silicon-carbide particle of coarse size is subjected to is thrown to tube wall greatly, along with outer eddy flow moves downward along tube wall, enter the underflow house steward and enter in the feed tank of next swirler group by underflow opening, be connected with the feed-pipe of next each cyclone separator of swirler group respectively by charging pump, to separate again, light specific gravity, the centrifugal force that the silicon powder particle of fine size is received is little, in cyclone separator, do not enter the overflow main pipe with the interior eddy flow that makes progress by upflow tube and enter in the feed tank of one group of swirler group, be connected with the feed-pipe of last each cyclone separator of swirler group respectively by charging pump, to separate again, the underflow house steward of tail level group swirler discharges work in-process carborundum powder liquid, the overflow main pipe of chopped-off head group swirler discharges silica flour liquid, and carborundum powder liquid is again through overpickling, dehydration, drying program is made finished product silicon carbide.
The waste mortar slurries that the present invention will contain carborundum powder and impurity silica flour enter multistage cyclone separator and carry out separating, washing, carborundum powder is separated with the impurity silica flour, make finished product silicon carbide through overpickling, dehydration, dry supervisor again, this novel process reclaims technology with traditional silicon carbide waste mortar and compares, reduced the alkali cleaning link, advantage such as have that water loss is low, processing power is big, finished product silicon carbide grade and rate of recovery height, floor space are little can significantly reduce production costs, improves economic return, alleviate affected personnel's labour intensity.
Description of drawings
Fig. 1 is a kind of structural representation of cyclone separator among the present invention.
Fig. 2 is a kind of structural representation of swirler group among the present invention.
Fig. 3 is a kind of process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
A kind of device that separates the silicon carbide waste mortar, be provided with cyclone separator, feed-pipe, the underflow house steward, the overflow main pipe, feed tank and charging pump, the structure of cyclone separator as shown in Figure 1, be provided with housing 2, the involute urve direction of housing 2 one sides is provided with feed-pipe 3, the top is provided with upflow tube 1, housing 2 belows are provided with right cylinder section 4, right cylinder section 4 belows are provided with conical shell 5, conical shell 5 belows are provided with underflow opening 6, structure and the mode of connection of above-mentioned each integral part are same as the prior art, this does not give unnecessary details, cyclone separator when work, with the silicon carbide slurries under the pressure about 0.3MPa, enter housing 2 at a high speed by feed-pipe 3 and form the pressure rotating fluid, because proportion and granularity difference are than great, the centrifugal force that the silicon-carbide particle of coarse size is subjected to is thrown to tube wall greatly, along with outer eddy flow moves downward along tube wall, discharge by underflow opening 6, be referred to as underflow; The centrifugal force that the silicon powder particle of light specific gravity, fine size is received is little, is not discharged by upflow tube 1 with the interior eddy flow that makes progress in swirler, is referred to as overflow.Like this, just separated coming of silicon carbide and silica flour.
The present invention is made up of three groups of swirler groups at least, as Fig. 2, shown in Figure 3, at least formed by the cyclone separator of two parallel connections for every group, the underflow opening of each cyclone separator is connected with underflow house steward 9 respectively in every group, overflow port is connected with overflow main pipe 7 respectively, last swirler group the underflow house steward and the confession case case of overflow main pipe and this swirler of back one swirler group be connected, feed tank is connected with the feed-pipe 8 of each cyclone separator of this swirler group respectively through charging pump, mother tube 10 is connected with the feed tank of middle swirler group, the underflow opening house steward 11 of tail level swirler group discharges work in-process carborundum powder liquid, and the overflow main pipe 12 of chopped-off head swirler group discharges silica flour liquid.
Processing step of the present invention is: will contain the waste mortar slurries of carborundum powder and impurity silica flour by charging pump, the feed tank of swirler group in the middle of the mother tube input, feed tank is connected with the feed-pipe of each cyclone separator of this swirler group respectively through charging pump, the waste mortar slurries form in each cyclone separator of this swirler group forces rotating fluid, than great, the centrifugal force that the silicon-carbide particle of coarse size is subjected to is thrown to tube wall greatly, along with outer eddy flow moves downward along tube wall, enter the underflow house steward and enter in the feed tank of next swirler group by underflow opening, be connected with the feed-pipe of next each cyclone separator of swirler group respectively by charging pump, to separate again, light specific gravity, the centrifugal force that the silicon powder particle of fine size is received is little, in cyclone separator, do not enter the overflow main pipe with the interior eddy flow that makes progress by upflow tube and enter in the feed tank of one group of swirler group, be connected with the feed-pipe of last each cyclone separator of swirler group respectively by charging pump, to separate again, the underflow house steward of tail level group swirler discharges work in-process carborundum powder liquid, the overflow main pipe of chopped-off head group swirler discharges silica flour liquid, and carborundum powder liquid is again through overpickling, dehydration, drying program is made finished product silicon carbide.
As shown in Figure 3, it is provided with six swirler groups, six swirler groups form 6 grades of cyclonic separation, and I is that particulate washing segregation section, IV are that coarse grain washs segregation section to the VI level to the IV level, and every grade of swirler group is according to the swirler of silicon carbide flow difference separation different amts in parallel.Be illustrated in figure 2 as a swirler group, it is made up of two cyclone separators, to make the silicon carbide slurries of starching by feeding pump among Fig. 3 and squeeze into the separation of IV level swirler, underflow after the separation returns V level swirler, overflow is squeezed into III level swirler through pump and is separated, the underflow of III level swirler returns IV level swirler, overflow is squeezed into II level swirler through pump and is separated, the underflow of II level swirler returns III level swirler, overflow is squeezed into I level swirler through pump and is separated, I level swirler separating underflow returns II level swirler, and the overflow of I level swirler is isolated waste product silica flour; IV level swirler underflow enters coarse grain washing segregation section, its underflow is squeezed into V level swirler through pump and is separated, IV level swirler is returned in the overflow of V level swirler, underflow is squeezed into VI level swirler through pump and is separated, V level swirler is returned in the overflow of VI level swirler, and the underflow of VI level swirler is the work in-process silicon carbide of separating.Thereby finally finished the cyclonic separation washing of silicon carbide and silica flour, work in-process silicon carbide namely can be made into finished product silicon carbide through pickling, dehydration, dry supervisor, and grade is more than 99%.
Claims (2)
1. device that separates the silicon carbide waste mortar, comprise cyclone separator, feed-pipe, the underflow house steward, the overflow main pipe, feed tank and charging pump, it is characterized in that being formed by three groups of swirler groups at least, at least formed by the cyclone separator of two parallel connections for every group, the underflow opening of each cyclone separator is connected with the underflow house steward respectively in every group, overflow port is connected with the overflow main pipe respectively, the underflow house steward of last swirler group is connected with the feed tank of this swirler with the overflow main pipe of back one swirler group, feed tank is connected with the feed-pipe of each cyclone separator of this swirler group respectively through charging pump, mother tube is connected with the feed tank of middle swirler group, the underflow opening house steward of tail level swirler group discharges work in-process carborundum powder liquid, and the overflow main pipe of chopped-off head swirler group discharges silica flour liquid.
2. one kind is separated silicon carbide waste mortar technology, it is characterized in that step is: will contain the waste mortar slurries of carborundum powder and impurity silica flour by charging pump, the feed tank of swirler group in the middle of the mother tube input, feed tank is connected with the feed-pipe of each cyclone separator of this swirler group respectively through charging pump, the waste mortar slurries form in each cyclone separator of this swirler group forces rotating fluid, than great, the centrifugal force that the silicon-carbide particle of coarse size is subjected to is thrown to tube wall greatly, along with outer eddy flow moves downward along tube wall, enter the underflow house steward and enter in the feed tank of next swirler group by underflow opening, be connected with the feed-pipe of next each cyclone separator of swirler group respectively by charging pump, to separate again, light specific gravity, the centrifugal force that the silicon powder particle of fine size is subjected to is little, in cyclone separator, do not enter the overflow main pipe with the interior eddy flow that makes progress by upflow tube and enter in the feed tank of one group of swirler group, be connected with the feed-pipe of last each cyclone separator of swirler group respectively by charging pump, to separate again, the underflow house steward of tail level group swirler discharges work in-process carborundum powder liquid, the overflow main pipe of chopped-off head group swirler discharges silica flour liquid, and carborundum powder liquid is again through overpickling, dehydration, drying program is made finished product silicon carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102925978A CN102502636B (en) | 2011-09-30 | 2011-09-30 | Device and process for separating silicon carbide waste mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102925978A CN102502636B (en) | 2011-09-30 | 2011-09-30 | Device and process for separating silicon carbide waste mortar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102502636A CN102502636A (en) | 2012-06-20 |
| CN102502636B true CN102502636B (en) | 2013-08-14 |
Family
ID=46214787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102925978A Active CN102502636B (en) | 2011-09-30 | 2011-09-30 | Device and process for separating silicon carbide waste mortar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102502636B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730688A (en) * | 2012-07-24 | 2012-10-17 | 晶科能源有限公司 | Mortar recycling process |
| CN103801545A (en) * | 2012-11-06 | 2014-05-21 | 华东理工大学 | Method for recycling silicon cutting sand by utilizing countercurrent washing of silicon cutting waste sand cake |
| CN105621414A (en) * | 2015-03-11 | 2016-06-01 | 辽宁工业大学 | Method for recovering silicon carbide from waste mortar of crystal silicon wire cutting |
| CN108046269A (en) * | 2018-01-16 | 2018-05-18 | 常州大学 | A kind of technique of the useless powder separation and recovery of solar silicon wafers cutting |
| CN112844883B (en) * | 2020-12-24 | 2023-06-06 | 吉县古贤泵业有限公司 | Solid-liquid separation conveying device and deep sea mining device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60144346D1 (en) * | 2001-05-29 | 2011-05-12 | Memc Electronic Materials | Process for the treatment of a spent glycol slurry |
| CN101033066B (en) * | 2006-03-06 | 2011-06-22 | 张捷平 | Method of recovering silicon carbide micro-powder |
| CN101244823B (en) * | 2008-02-20 | 2010-06-23 | 江南大学 | Method for recycling silicon carbide from by-product in silicon slice cutting process |
| CN101474511B (en) * | 2008-12-17 | 2011-05-04 | 西安通鑫半导体辅料有限公司 | Process for recovering polyethylene glycol and silicon carbide from silicon wafer wire cutting waste mortar |
| EP2382291A2 (en) * | 2008-12-31 | 2011-11-02 | MEMC Singapore Pte. Ltd. | Methods to recover and purify silicon particles from saw kerf |
| CN102071092B (en) * | 2010-12-03 | 2012-12-19 | 江阴浩博科技有限公司 | Method for recovering and recycling silicon slice cutting waste mortar |
-
2011
- 2011-09-30 CN CN2011102925978A patent/CN102502636B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102502636A (en) | 2012-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102502636B (en) | Device and process for separating silicon carbide waste mortar | |
| CN102228762B (en) | Dehydration method and device of tailings | |
| CN103816992A (en) | Coarse slime dense medium sorting technology and system | |
| CN203791036U (en) | Coarse slime dense medium separation system | |
| CN201565199U (en) | On-line continuous solid-liquid separator | |
| CN112756101A (en) | Wet preparation method and production line of high-purity quartz sand | |
| CN206188452U (en) | Oil -water separator | |
| CN214864341U (en) | Wet preparation production line of high-purity quartz sand | |
| CN201815370U (en) | Fine sand recovery device | |
| CN201999951U (en) | Production device for three-dimensional steel slag micropowder | |
| CN205851094U (en) | A kind of dehydration equipment of fine slime | |
| CN202246077U (en) | Device for separating waste mortar from silicon carbide | |
| CN201342285Y (en) | Silt particle high efficient separating purifier | |
| CN205796736U (en) | Ball milling mine tailing directly sieves dewatering system | |
| CN108046269A (en) | A kind of technique of the useless powder separation and recovery of solar silicon wafers cutting | |
| CN206965950U (en) | A kind of concentration-type cyclone | |
| CN102000628A (en) | Fine sand recovery device | |
| CN212943529U (en) | Heavy-medium ore dressing cyclone for high-density separation | |
| CN100366346C (en) | Bauxite separating method | |
| CN202143801U (en) | Tailing dehydrating device | |
| CN102432023A (en) | Purification method of low grade diatomite | |
| CN201249138Y (en) | Hydraulic cyclone classifier | |
| CN203281430U (en) | Solid phase drying and screening device of dewatering and drying integrated centrifugal machine | |
| CN205095933U (en) | Carborundum grading plant | |
| CN201529577U (en) | Liquid-solid separation water conservancy swirler of atmospheric condensate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180330 Address after: 153000 Yichun District intermediate people's Court Training Center, Yichun, Heilongjiang Patentee after: Yichun Luming Mining Co. Ltd. Address before: No. 975, Weihai City, Shandong Province, science and technology road, 264209 Patentee before: Weihai Haiwang Hydrocyclone Co., Ltd., Beijing Huayu Engineering Co., Ltd. of Zh |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190529 Address after: 264200 No. 95 Huihe Road, Weihai City, Shandong Province Patentee after: Weihai Haiwang Hydrocyclone Co., Ltd., Beijing Huayu Engineering Co., Ltd. of Zh Address before: 153000 Yichun Intermediate People's Court Training Center, Yichun City, Heilongjiang Province Patentee before: Yichun Luming Mining Co. Ltd. |
|
| TR01 | Transfer of patent right |