CN110607204B - Method for recovering liquid wax from sapphire chip waste - Google Patents
Method for recovering liquid wax from sapphire chip waste Download PDFInfo
- Publication number
- CN110607204B CN110607204B CN201911040528.0A CN201911040528A CN110607204B CN 110607204 B CN110607204 B CN 110607204B CN 201911040528 A CN201911040528 A CN 201911040528A CN 110607204 B CN110607204 B CN 110607204B
- Authority
- CN
- China
- Prior art keywords
- wax
- waste
- liquid wax
- sapphire
- liquid
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 74
- 239000002699 waste material Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910052594 sapphire Inorganic materials 0.000 title claims abstract description 19
- 239000010980 sapphire Substances 0.000 title claims abstract description 19
- 239000003085 diluting agent Substances 0.000 claims abstract description 17
- 238000004064 recycling Methods 0.000 claims abstract description 17
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 12
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 10
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 10
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims abstract description 10
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 230000005484 gravity Effects 0.000 claims description 17
- KVWWIYGFBYDJQC-UHFFFAOYSA-N methyl dihydrojasmonate Chemical compound CCCCCC1C(CC(=O)OC)CCC1=O KVWWIYGFBYDJQC-UHFFFAOYSA-N 0.000 claims description 16
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 14
- 239000012535 impurity Substances 0.000 description 10
- 150000001298 alcohols Chemical class 0.000 description 6
- 238000000227 grinding Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- -1 however Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B11/00—Recovery or refining of other fatty substances, e.g. lanolin or waxes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for recycling liquid wax from sapphire chip waste, which comprises the following steps: filtering waste wax flowing out of the sapphire patches by a 50-100 mesh screen, pouring waste wax with a certain volume into a measuring cup, adding a certain proportion of analytically pure diluent, mixing the diluent with ethanol, n-propanol, rosin and dibutyl phthalate according to a certain proportion, stirring by using a stirrer, filtering the diluted liquid wax by a 0.1-0.2 um filter screen, sealing and storing the filtered liquid wax, and standing for more than 3 hours. The invention realizes the recycling of the waste liquid wax generated by the sapphire paster for the first time in the industry, and the process is simple and easy to operate. Can be directly recycled after recovery, and has no difference with the original wax in use effect. After the process is used, the demand of the liquid wax is greatly reduced, and the raw material cost is obviously reduced.
Description
Technical Field
The invention belongs to the technical field of recycling of sapphire chip liquid wax waste, and particularly relates to a method for recycling liquid wax from sapphire chip waste.
Background
In the sapphire substrate manufacturing process, the single-side grinding section plays a role in removing a damaged layer on the surface of a wafer and improving the flatness of the wafer. And the single-side grinding is to bond the wafer of the product to be processed on the ceramic disc carrier, then place the ceramic disc with the wafer on a grinding disc of a copper polishing machine, and match diamond grinding materials with the grain diameter of 3-4 um for high-speed grinding processing. Current chip technology basically utilizes liquid wax to bond the wafer to the ceramic disk. The liquid wax has the filtering precision lower than 1um, so that the liquid wax has the advantages of high precision, high viscosity, easy cleaning, good fluidity, easy solidification, easy piece removal and the like. The raw materials of the liquid wax mainly comprise rosin and alcohol compounds, wherein the content of the alcohol compounds accounts for 30-40%, and the liquid wax has strong volatility. In practical use, in order to ensure the uniformity of the liquid wax covering on the whole wafer surface, the chip mounter needs to spray excessive liquid wax to the wafer surface rotating at high speed, and at the moment, a large amount of unused liquid wax is deposited and flows to the waste liquid barrel along the wax discharge pipeline. However, due to the influence of the high-speed rotating airflow in the machine, the alcohol compounds in the liquid wax are seriously volatilized in the deposition process and gradually become viscous; meanwhile, the discharged liquid wax is inevitably mixed with impurities such as dust and pipe wall residues when flowing through the pipeline, so that the actually collected waste wax is often thick and contains more impurities, and cannot be reused. According to statistics, the discharged liquid wax accounts for more than 30-40% of the spraying amount of each piece of liquid wax during coating, however, waste wax generated by the existing production enterprises is basically stored in a centralized mode firstly, and then qualified dangerous waste product processing companies are searched for assistance in processing, so that not only is the production cost increased, but also a large amount of additional processing cost is required.
Patent CN 104130865 a provides a method for recovering solid wax, which mainly uses heating and temperature control layering for filtration, and it is difficult to completely eliminate impurities, the heating will volatilize alcohols and waste huge heat, resulting in that the recovered product does not meet the reuse standard and the recovery cost is high, and there are obvious differences in technical motivation, technical means and technical principle of this patent.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problem of recycling of the waste liquid, the invention provides a method for recycling liquid wax from sapphire chip waste.
The technical scheme is as follows: a method for recycling liquid wax from sapphire chip waste comprises the following specific steps:
step1, collecting the waste wax and then primarily filtering the waste wax by a screen;
step2, pouring a proper amount of waste wax into a measuring cup, and adding a certain mass of function separation dilution combined solution according to the content of the waste wax;
step3, stirring the liquid wax in the measuring cup by using a stirrer.
And Step4, filtering the diluted liquid wax through a 0.1-0.2 um filter screen.
And Step5, storing the filtered liquid wax in a sealed manner, and standing for more than 3 h.
Further, in Step1, the preferred mesh size is 75 mesh, and if the sapphire pieces are too thick to pass through the screen, the pieces can jump directly to Step 2. The purpose of this step is to filter out the larger particulate impurities in the recovered wax.
In Step2, the addition amount of the diluent depends on the mass of the waste liquid in the measuring cup, and the key point is to adjust the specific gravity of the waste wax to the specific gravity of the original liquid wax. The diluent comprises 60-80 wt% of propanol, 1-3 wt% of rosin, 2-3 wt% of dibutyl phthalate, 2-3 wt% of methyl dihydrojasmonate, 1-2 wt% of propylene carbonate and the balance of anhydrous ethanol, and preferably comprises 65-75 wt% of propanol, 2wt% of rosin, 2.5wt% of dibutyl phthalate, 2.5wt% of methyl dihydrojasmonate, 1.5wt% of propylene carbonate and the balance of anhydrous ethanol.
Further, in Step3, the part of the stirrer, which enters the liquid wax, needs to be made of corrosion-resistant nylon or teflon, preferably nylon. Stirring time is 5-15 min, and the preferable stirring time is 10 min.
Further, in Step4, the honeycomb filter core is selected as the superfine filter screen, preferably the filter screen of 0.2um filter precision.
Further, in Step5, the room temperature sealed storage was to prevent the volatilization of alcohols, and the air in the liquid wax was sufficiently discharged by leaving for 3 hours.
Has the advantages that: on the premise of no difference between the actual use effect and the original wax, the process has the following advantages:
the composition is diluted by a specific function, dust and residues in the waste viscous liquid can be chemically separated and diluted, and then physical separation is realized by the filter screen, so that the problem that the waste viscous liquid is high in fusion degree with the dust and strong in wrapping property, and effective separation is difficult to realize, the treatment process can be carried out at normal temperature without heating, the volatilization of effective alcohols in the liquid wax can be effectively prevented, the specific gravity and the viscosity during recovery meet the secondary utilization requirements, and the effective recovery of the liquid wax is realized.
Drawings
Fig. 1 is a flowchart of embodiments 1 and 2.
Fig. 2 is a flowchart of embodiments 3 and 4.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
In each of examples 1 and 2 below, a method of recovering waste wax discharged during the wax spinning process for the sapphire sheet was used. The specific gravity of the original liquid wax is 0.90, the viscosity is 23.3mpa · s, the specific gravity of the actually recovered waste wax is 0.94, the viscosity is 43.7mpa · s, and the content range of large-particle impurities (with the size of 0.5-5 um) is 2% -5%.
Example 1:
in step S1, the recovered waste wax is once filtered by using a 75-mesh screen, and the purpose of this filtering is to remove large particles in the recovered waste wax.
Preparing a functional release diluent (with a density of about 0.8 g/cm)3) The composition of the compound comprises 60 wt% of propanol, 1 wt% of rosin, 2wt% of dibutyl phthalate, 2wt% of methyl dihydrojasmonate, 2wt% of propylene carbonate and 33 wt% of absolute ethyl alcohol.
In step S2, 1000g of waste wax was introduced into the measuring cup, and 340g of a function-releasing diluent was added to adjust the specific gravity of the waste wax to 0.90.
In step S3, the diluted liquid wax is stirred with a stirrer for 10min in order to dilute the waste wax sufficiently uniformly.
In step S4, the diluted liquid wax is again fine filtered using a 0.2um honeycomb filter to remove smaller contaminant particles in the liquid wax.
In step S5, the filtered liquid wax is put into a storage tank and sealed to suppress the volatilization of the alcohol, and the standing time is more than 3h to exhaust the air in the liquid wax.
Through inspection, the viscosity of the recovered waste wax is 22.0mpa · s, the specific gravity is 0.905, and the content of large-particle impurities (with the size of 0.5-5 um) is lower than 0.04 percent, thereby meeting the recycling standard.
Example 2:
in step S1, the recovered waste wax is once filtered by using a 75-mesh screen, and the purpose of this filtering is to remove large particles in the recovered waste wax.
Preparing a functional release diluent (with a density of about 0.8 g/cm)3) The composition of the paint comprises 75wt% of propanol, 2wt% of rosin, 2.5wt% of dibutyl phthalate, 2.5wt% of methyl dihydrojasmonate, 1 wt% of propylene carbonate and 17 wt% of absolute ethyl alcohol.
In step S2, 1000g of waste wax was introduced into the measuring cup, and 340g of a function-releasing diluent was added to adjust the specific gravity of the waste wax to 0.90.
In step S3, the diluted liquid wax is stirred with a stirrer for 10min in order to dilute the waste wax sufficiently uniformly.
In step S4, the diluted liquid wax is again fine filtered using a 0.2um honeycomb filter to remove smaller contaminant particles in the liquid wax.
In step S5, the filtered liquid wax is sealed in a storage tank and left for more than 3 hours to completely remove the air in the liquid wax.
Through inspection, the viscosity of the recovered waste wax is 21.8mpa · s, the specific gravity is 0.910, and the content of large-particle impurities (with the size of 0.5-5 um) is lower than 0.02 percent, which meets the recycling standard.
In the following embodiments 3 to 4, all used are methods for recovering waste wax discharged in the process of spinning wax on a sapphire sheet, the specific gravity of the original liquid wax is 0.88, the viscosity is 18.8mpa · s, the specific gravity of the actually recovered waste wax is 0.92, the viscosity is 30.5mpa · s, and the content of large-particle impurities (with the size of 0.5 to 5um) is 2 to 5 percent.
Example 3:
in step S1, the recovered waste wax is once filtered by using a 75-mesh screen, and the purpose of this filtering is to remove large particles in the recovered waste wax.
Preparing a functional release diluent (with a density of about 0.8 g/cm)3) The components of the paint are 80 wt% of propanol, 3 wt% of rosin and 3Dibutyl phthalate, methyl dihydrojasmonate 3 wt%, propylene carbonate 1 wt% and anhydrous ethanol 10 wt%.
In step S2, 800g of waste wax was introduced into the measuring cup, and 272g of a function-separating diluent was added to adjust the specific gravity of the waste wax to 0.88.
In step S3, the diluted liquid wax is stirred by a stirrer for 10min to sufficiently homogenize the diluted liquid and dilute the waste wax
In step S4, the diluted liquid wax is again fine filtered using a 0.2um honeycomb filter to remove smaller contaminant particles in the liquid wax.
In step S5, the filtered liquid wax is sealed in a storage tank and left for more than 3 hours to completely remove the air in the liquid wax.
Through inspection, the viscosity of the recovered waste wax is 18.8mpa · s, the specific gravity is 0.88, and the content of large-particle impurities (with the size of 0.5-5 um) is lower than 0.05 percent, thereby meeting the recycling standard.
Example 4:
preparing a functional release diluent (with a density of about 0.8 g/cm)3) The composition of the compound comprises 70 wt% of propanol, 3 wt% of rosin, 3 wt% of dibutyl phthalate, 2.5wt% of methyl dihydrojasmonate, 1.5wt% of propylene carbonate and 20 wt% of absolute ethyl alcohol.
In step S1, the recovered waste wax is once filtered by using a 75-mesh screen, and the purpose of this filtering is to remove large particles in the recovered waste wax.
In step S2, 800g of waste wax was introduced into the measuring cup, and 272g of a function-separating diluent was added to adjust the specific gravity of the waste wax to 0.88.
In step S3, the diluted liquid wax is stirred with a stirrer for 10min in order to dilute the waste wax sufficiently uniformly.
In step S4, the diluted liquid wax is again fine filtered using a 0.2um honeycomb filter to remove smaller contaminant particles in the liquid wax.
In step S5, the filtered liquid wax is sealed in a storage tank and left for more than 3 hours to completely remove the air in the liquid wax.
Through inspection, the viscosity of the recovered waste wax is 19mpa · s, the specific gravity is 0.88, and the content of large-particle impurities (with the size of 0.5-5 um) is lower than 0.01 percent, so that the waste wax meets the recycling standard.
In embodiments 1 to 4, according to long-term usage statistics, each recoverable liquid wax accounts for 30 to 40% of the usage amount, and the utilization rate of the prepared liquid wax can be improved by 70%. Taking 240 ten thousand tablets produced per year as an example, 1980L of liquid wax can be reduced per year, and 56.4 ten thousand yuan/year can be saved by deducting the expense of the diluent.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (6)
1. A method for recycling liquid wax from sapphire chip waste materials recycles the waste wax, and is characterized in that: the method comprises the following steps:
step1, collecting waste wax, and primarily filtering the waste wax through a 50-100 mesh screen;
step2, pouring a proper amount of waste wax into a measuring cup, and adding a certain mass of function separation diluent according to the content of the waste wax; the function-disengaging diluent consists of the following components: 60-80 wt% of propanol, 1-3 wt% of rosin, 2-3 wt% of dibutyl phthalate, 2-3 wt% of methyl dihydrojasmonate, 1-2 wt% of propylene carbonate and the balance of absolute ethyl alcohol;
step3, stirring the liquid wax in the measuring cup by using a stirrer;
step4, filtering the diluted liquid wax by a 0.1-0.2 um filter screen;
and 5, storing the filtered liquid wax in a sealed way, wherein the standing time is more than 3 h.
2. The method of claim 1 for recycling liquid wax from sapphire die scrap, comprising: in the step1, the effluent waste wax is filtered by a 75-mesh screen.
3. The method of claim 1 for recycling liquid wax from sapphire die scrap, comprising: in the step2, the addition amount of the diluent is determined according to the quality of the waste liquid in the measuring cup, and the core is to adjust the specific gravity of the waste wax to the specific gravity of the original liquid wax.
4. The method for recycling and reusing liquid wax from sapphire chip waste according to claim 2, wherein the diluent comprises 65-75 wt% of propanol, 2wt% of rosin, 2.5wt% of dibutyl phthalate, 2.5wt% of methyl dihydrojasmonate, 1.5wt% of propylene carbonate, and the balance of absolute ethyl alcohol.
5. The method of claim 1 for recycling liquid wax from sapphire die scrap, comprising: in the step3, the part of the stirrer, which enters the liquid wax, is made of corrosion-resistant nylon or teflon, and the stirring time is 5-15 min.
6. The method of claim 1 for recycling liquid wax from sapphire die scrap, comprising: in step4, the superfine filter screen adopts a honeycomb filter element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911040528.0A CN110607204B (en) | 2019-10-29 | 2019-10-29 | Method for recovering liquid wax from sapphire chip waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911040528.0A CN110607204B (en) | 2019-10-29 | 2019-10-29 | Method for recovering liquid wax from sapphire chip waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110607204A CN110607204A (en) | 2019-12-24 |
| CN110607204B true CN110607204B (en) | 2020-05-08 |
Family
ID=68895589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911040528.0A Active CN110607204B (en) | 2019-10-29 | 2019-10-29 | Method for recovering liquid wax from sapphire chip waste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110607204B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397526B (en) * | 2008-11-04 | 2011-11-02 | 昆明理工大学 | Extraction method of natural shellac-wax |
| CN104130865A (en) * | 2014-07-31 | 2014-11-05 | 梁福柳 | Recovering method for wax |
| JP7150434B2 (en) * | 2015-03-10 | 2022-10-11 | プラジ インダストリーズ リミテッド | Method for refining wax |
| US20160271026A1 (en) * | 2015-03-20 | 2016-09-22 | Catherine B. E. Cooper | Gemstone infused lifestyle products |
| CN109705984A (en) * | 2019-01-23 | 2019-05-03 | 云南蓝晶科技有限公司 | A kind of Sapphire Substrate uses the recovery method of liquid wax |
| CN109652211A (en) * | 2019-01-23 | 2019-04-19 | 云南蓝晶科技有限公司 | A kind of Sapphire Substrate uses application method after the recycling of liquid wax |
-
2019
- 2019-10-29 CN CN201911040528.0A patent/CN110607204B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110607204A (en) | 2019-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101033066B (en) | Method of recovering silicon carbide micro-powder | |
| CN103522431B (en) | A kind of silicon chip cutting technique | |
| CN101875492B (en) | Simplified industrial method for recovering silicon carbide from mortar generated in cutting process of silicon wafers | |
| CN104114324B (en) | Grinding-material renovation process | |
| CN102167956A (en) | Method for recycling and reutilizing rare-earth polishing powder waste residue and waste liquor | |
| CN101892118A (en) | Simplified industrial method for recovering cutting fluid from silicon chip cutting and processing mortar | |
| CN108929957A (en) | The recovery method of high purity rare earth oxides in waste material containing rare earth oxide | |
| CN103288086A (en) | Recovery method of silicon carbide, silicon powder and polyethylene glycol from cutting fluid of silicon chips | |
| CN103305697B (en) | Recovering and reutilizing method of waste residues and waste liquid of rare earth polishing powder | |
| CN110607204B (en) | Method for recovering liquid wax from sapphire chip waste | |
| CN108942422B (en) | Polishing method of coal brick | |
| CN102942836B (en) | Photocureable coating, its photocuring scroll saw prepared and preparation method thereof and device | |
| CN105567888B (en) | A kind of method that utilization hydrocyclone separation technology method reclaims Iron concentrate from ferrous iron containing metallurgical dust | |
| CN101954675A (en) | Method for recovering mortar in wire cutting process | |
| CN104109482A (en) | Aluminium alloy polishing solution and preparation method thereof | |
| CN103773587A (en) | On-line silicon wafer cutting mortar recycling method and device | |
| CN106916920A (en) | The method that the silicon powder discarded after a kind of use solar energy silicon crystal chip Buddha's warrior attendant wire cutting makes steel-making reducing agent | |
| EP3060521B1 (en) | Non-chemical method for recovering silicon carbide particles | |
| CN104986897B (en) | Method for recovering valuable metals in wastewater | |
| CN110982434B (en) | Preparation method of polishing powder and polishing solution for polishing gallium arsenide | |
| CN104496486B (en) | The production system of Imitation Rock Porcelain Tiles | |
| CN109722220B (en) | Method for recycling wax in grinding and polishing semiconductor substrate | |
| CN102234379A (en) | Method for reducing use amount of new silicon carbide abrasive in solar silicon wafer cutting mortar | |
| CN202148339U (en) | Multifunctional swaging machine | |
| CN207189346U (en) | Glass clears off device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240318 Address after: 364000 Yongding Industrial Park, Gaopi Town, Yongding District, Longyan City, Fujian Province Patentee after: FUJIAN ZOOMKING TECHNOLOGY CO.,LTD. Country or region after: China Address before: 8 Feiyue Road, Shanghuang science and Technology Pioneer Park, Liyang City, Changzhou City, Jiangsu Province 213300 Patentee before: Jiangsu Jingjing Photoelectric Technology Co.,Ltd. Country or region before: China |