CN101817164A - Method for recycling ball milled agent in hard alloy mixed slurry - Google Patents
Method for recycling ball milled agent in hard alloy mixed slurry Download PDFInfo
- Publication number
- CN101817164A CN101817164A CN 201010134336 CN201010134336A CN101817164A CN 101817164 A CN101817164 A CN 101817164A CN 201010134336 CN201010134336 CN 201010134336 CN 201010134336 A CN201010134336 A CN 201010134336A CN 101817164 A CN101817164 A CN 101817164A
- Authority
- CN
- China
- Prior art keywords
- water
- mixed slurry
- hard alloy
- agent
- vacuum
- 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.)
- Pending
Links
Images
Abstract
The invention aims to provide a low-cost and high-efficiency method for recycling a ball milled agent in hard alloy mixed slurry. The method comprises the following steps of: heating and drying the hard alloy mixed slurry in a vacuum double-cone drier, and controlling the heating temperature to be about 90 to 110 DEG C so that the ball milled agent in the hard alloy mixed slurry volatilizes into a gas and is vacuumized away by using a vacuumizing tube of the vacuum double-cone drier, wherein the vacuum degree in the vacuum double-cone drier is between -0.04 and 0.06 MPa; and filtering the gas vacuumized by the vacuumizing tube by using a filter and then allowing the gas to enter a condenser and condensing the gas into liquid.
Description
Technical field
The present invention relates to method for recycling ball milled agent in a kind of hard alloy mixed slurry.
Background technology
In modern industry, cemented carbide powder can add a large amount of ball milling agent during ball milling in ball mill, and cemented carbide powder becomes hard alloy mixed slurry behind ball milling.The slurry that hard alloy mixed slurry mainly is made up of cemented carbide powder and ball milling agent.Owing to wherein contain multiple organic solvent in the ball milling agent, as acetone, ethanol and ethane etc., if these solvents will directly be discharged into its recovery in the atmosphere without reasonable method, will cause the severe contamination of environment, and if under indoor environment these inflammable gases have and cause the danger of meeting fire burns or blast.The big multiple enterprises of this part ball milling agent can adopt multiple way to reclaim from considering cost and environmental protection angle.
Traditional method is, domestic employing box-type drying adopts this dry drying mode to have most of gas and flows in the air, and recovering effect is not desirable, and the rate of recovery is low.Abroad also have with class methods and reclaim, but the relevant reclaimer of making is expensive, difficult at home the popularization.But there is not a kind of not only cost rationally but also the high method for recycling ball milled agent of efficient so far yet.
Summary of the invention
The purpose of this invention is to provide method for recycling ball milled agent in the hard alloy mixed slurry that a kind of cost is low, efficient is high.
Method for recycling ball milled agent in the hard alloy mixed slurry of the present invention comprises the steps:
Hard alloy mixed slurry is carried out heat drying in the vacuum double cone dryer, heating and temperature control is about 90-110 ℃, make ball milling agent in the hard alloy mixed slurry evaporate into gas and taken away that vacuum is at-0.04--0.06MPa in the vacuum double cone dryer by the vacuum-pumping tube of vacuum double cone dryer; The gas that vacuum-pumping tube is extracted out filters through filter earlier, enters condenser condenses again and becomes liquid.
Beneficial effect of the present invention:
1, adds and pine for adopting the dry box-type drying that replaces of vacuum bipyramid device, under air-tight state, work, make solvent can not evaporate into outside the recovery system substantially, and have the energy of saving, laborsaving, fireballing effect;
2, adopt specific heating-up temperature and vacuum at-0.04--0.06MPa, make ball milling agent in the hard alloy mixed slurry can be heated evaporation and can be taken away again, make the rate of recovery to reach more than 95%.Facts have proved, heating-up temperature height (above 110 ℃), vacuum is when-0.04--0.06MPa, and recovering effect is unsatisfactory, and this may be because too high temperature makes the organic solvent deterioration reason.Vacuum-below the 0.06MPa, the manufacturing cost of equipment significantly increases.So heating and temperature control of the present invention is about 90-110 ℃, vacuum is at-0.04--0.06MPa in the vacuum double cone dryer.
Above-mentioned recovery method, the hard alloy mixed slurry heat drying time in the vacuum double cone dryer is 3 hours.
Above-mentioned recovery method, liquid as ball milling agent add in the ball milling operation of carbide alloy.Like this, the liquid after the recovery joins in the ball mill to the carbide alloy ball milling once more as the ball milling agent again, and recycling reaches the requirement that not only reduces cost but also realize Environmental Safety.
Above-mentioned recovery method, it is refrigerant that condenser adopts running water or chilled water.Wherein can use running water for the refrigerant of condenser cooling, also can be chilled water, wherein the chilled water best results.
Above-mentioned recovery method, the heating agent passage that the described gas of the confession of condenser passes through is a curve.The heating agent passage adopts the design of baffling curvilinear structures in the condenser, has prolonged the gas flow distance, has slowed down flowing velocity, reaches best condensation effect.
Above-mentioned recovery method, the liquid that condenser condenses becomes enters storage tank, and the top of storage tank communicates with the bleeding point of water-ring vacuum pump; By water-ring vacuum pump the vacuum double cone dryer is vacuumized.Water-ring vacuum pump belongs to prior art, an amount of water is housed as working solution in the pump housing.That it is that variation by pump chamber realizes is air-breathing, compression and exhaust, and it belongs to the variable displacement type vavuum pump.In order to reduce the consumption of working solution (water), the working solution of water-ring vacuum pump comes out from the delivery port of water-ring vacuum pump to make working solution recycle after enter the water inlet of water-ring vacuum pump behind the flow container, heat exchanger again.
Description of drawings
Fig. 1 is the schematic diagram of ball milling agent recovery system in the hard alloy mixed slurry of the present invention.
The specific embodiment
Referring to ball milling agent recovery system in the hard alloy mixed slurry shown in Figure 1, comprise vacuum double cone dryer 1, filter 2, pipe bundle condenser 3, the storage tank 4 of series connection.The vacuum-pumping tube 11 of vacuum double cone dryer 1 communicates with the air inlet of filter 2, and filter 2 is that bleeding point communicates with the heating agent feeder connection 31 of pipe bundle condenser 3; The heating agent channel outlet 32 of pipe bundle condenser 3 connects the top of storage tank 4.The refrigerant of pipe bundle condenser 3 is a chilled water, and chilled water enters in the pipe bundle condenser from refrigerant passage inlet 33, flows out from refrigerant passage outlet 34.
The top of storage tank 4 communicates with the bleeding point 51 of water-ring vacuum pump 5.The delivery port of water-ring vacuum pump 5 connects the top of flow container 6, and the heating agent inlet 71 of the bottom of flow container 6 and heat exchanger 7 joins, and the heating agent of heat exchanger 7 exports the water inlet of 72 water receiving ring type vavuum pumps 5.Come out to make working solution recycle after enter the water inlet of water-ring vacuum pump behind the flow container, heat exchanger again.Freezing liquid enters in the heat exchanger through refrigerant inlet 73, flows out from refrigerant port 74.
Method for recycling ball milled agent in the hard alloy mixed slurry of the present invention, be that the hard alloy mixed slurry behind the ball milling is added in the vacuum double cone dryer, adopt automatically controlled heating or automatically controlled steam-heated method to carry out heating, drying, when outer temperature heating-up temperature reaches 100 ℃, most of ball milling agent (solvent) in the hard alloy mixed slurry has evaporated into gas, heat and the highlyest be no more than 120 ℃, heat time heating time, vacuum was at-0.04--0.06MPa generally about 3 hours.The gas that evaporates into and taken away and enter in the pipe bundle condenser by the vacuum-pumping tube of vacuum double cone dryer filters by filter at first earlier before gas enters pipe bundle condenser, and wherein related cemented carbide powder is filtered out.The refrigerant of pipe bundle condenser can be used running water, also can be chilled water, wherein the chilled water best results.Become liquid through condensed solvent by gas like this, these liquid enter storage tank again and finish the whole recovery process.Liquid after the recovery can be used as the ball milling agent and reuse (joining in the cemented carbide powder) when the cemented carbide powder ball milling, reaches the requirement that not only reduces cost but also realize Environmental Safety.The heating agent passage that the described gas of the confession of pipe bundle condenser passes through is a curve.For example, pipe bundle condenser structurally adopts the deflection plate of curvilinear structures, reaches the condensation effect of the best by the curvilinear motion of air-flow.Pipe bundle condenser adopts the biserial pipe to arrange, and wherein refrigerant moves towards in the tubulation, and gas moves towards in the tube wall, adopts 7-9 piece deflection plate in the tube wall.
During water-ring vacuum pump work, vacuum double cone dryer, filter, pipe bundle condenser, storage tank are vacuumized.The working solution of water-ring vacuum pump (water) enters water-ring vacuum pump again behind flow container, heat exchanger, working solution recycles.
Adopt this kind method to reclaim the main advantage of ball milling agent:
1, adds and pine for adopting the dry box-type drying that replaces of vacuum bipyramid device, under air-tight state, work, so that solvent can not evaporate into outside the recovery system substantially, and have the effect of saving the energy, laborsaving, pick up speed;
2, adopt the design of baffling curvilinear structures in the condenser, prolonged the gas flow distance, slowed down flowing velocity, reach best condensation effect;
3, the rate of recovery of whole recovery technology can reach more than 95%.
4, adopt water-ring vacuum pump to vacuumize, the water-ring vacuum pump working solution recycles.
Claims (7)
1. method for recycling ball milled agent in the hard alloy mixed slurry, it is characterized in that: it comprises the steps:
Hard alloy mixed slurry is carried out heat drying in the vacuum double cone dryer, heating and temperature control is about 90-110 ℃, make ball milling agent in the hard alloy mixed slurry evaporate into gas and taken away that vacuum is at-0.04--0.06MPa in the vacuum double cone dryer by the vacuum-pumping tube of vacuum double cone dryer;
The gas that vacuum-pumping tube is extracted out filters through filter earlier, enters condenser condenses again and becomes liquid.
2. recovery method as claimed in claim 1 is characterized in that: hard alloy mixed slurry heat drying time in the vacuum double cone dryer is 3 hours.
3. recovery method as claimed in claim 1 is characterized in that: liquid as ball milling agent add in the ball milling operation of carbide alloy.
4. recovery method as claimed in claim 1 is characterized in that: it is refrigerant that condenser adopts running water or chilled water.
5. recovery method as claimed in claim 1 is characterized in that: the heating agent passage that the described gas of the confession of condenser passes through is a curve.
6. recovery method as claimed in claim 1 is characterized in that: the liquid that condenser condenses becomes enters storage tank, and the top of storage tank communicates with the bleeding point of water-ring vacuum pump; By water-ring vacuum pump the vacuum double cone dryer is vacuumized.
7. recovery method as claimed in claim 7 is characterized in that: the working solution of water-ring vacuum pump comes out from the delivery port of water-ring vacuum pump to make working solution recycle after enter the water inlet of water-ring vacuum pump behind the flow container, heat exchanger again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010134336 CN101817164A (en) | 2010-03-29 | 2010-03-29 | Method for recycling ball milled agent in hard alloy mixed slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010134336 CN101817164A (en) | 2010-03-29 | 2010-03-29 | Method for recycling ball milled agent in hard alloy mixed slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101817164A true CN101817164A (en) | 2010-09-01 |
Family
ID=42652517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010134336 Pending CN101817164A (en) | 2010-03-29 | 2010-03-29 | Method for recycling ball milled agent in hard alloy mixed slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101817164A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5806204A (en) * | 1997-06-13 | 1998-09-15 | Mmats, Inc. | Material dryer using vacuum drying and vapor condensation |
| CN2568304Y (en) * | 2002-09-03 | 2003-08-27 | 王剑钟 | Recovery appts. for carbide hybrid material ball milling agent |
| CN2591296Y (en) * | 2002-12-29 | 2003-12-10 | 山东晨鸣纸业集团股份有限公司 | Water-ring vacuum pump water supply system |
| CN2655143Y (en) * | 2003-09-12 | 2004-11-10 | 浙江大学 | Vacuum drying box |
| CN201086237Y (en) * | 2007-08-10 | 2008-07-16 | 株洲精工硬质合金有限公司 | Vibration drying mechanism for hard metal mix |
-
2010
- 2010-03-29 CN CN 201010134336 patent/CN101817164A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5806204A (en) * | 1997-06-13 | 1998-09-15 | Mmats, Inc. | Material dryer using vacuum drying and vapor condensation |
| CN2568304Y (en) * | 2002-09-03 | 2003-08-27 | 王剑钟 | Recovery appts. for carbide hybrid material ball milling agent |
| CN2591296Y (en) * | 2002-12-29 | 2003-12-10 | 山东晨鸣纸业集团股份有限公司 | Water-ring vacuum pump water supply system |
| CN2655143Y (en) * | 2003-09-12 | 2004-11-10 | 浙江大学 | Vacuum drying box |
| CN201086237Y (en) * | 2007-08-10 | 2008-07-16 | 株洲精工硬质合金有限公司 | Vibration drying mechanism for hard metal mix |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107883744B (en) | Control method of self-adaptive and self-adjusting heat pump hot blast stove control system | |
| CN105716443B (en) | A kind of circulating water cooling system and cooling means | |
| CN103908789A (en) | MVR (mechanical vapor recompression) heat pump vaporization system for accelerating to start up by adopting energy accumulation water tank | |
| CN206970447U (en) | Sludge at low temperature dehumidifying anhydration system | |
| CN207785960U (en) | Energy-saving concentration unit | |
| CN108426426A (en) | A kind of sludge dehumidification type multistage recuperation of heat anhydration system | |
| CN107686224A (en) | A kind of vacuum dehydration drying equipment and technique | |
| CN106390496A (en) | Energy-saving evaporation equipment of mixed salt solution and control method of equipment | |
| CN108408812B (en) | Desalination method and device for salt-containing wastewater | |
| CN105327765A (en) | High-moisture low-rank coal pulverizing and water recycling system and method | |
| CN102294124A (en) | Spray drying method and device based on absorption heat pipe | |
| CN102607247B (en) | Spray dryer | |
| CN205618328U (en) | A combination equipment for preparing it is dry, clean gaseous | |
| CN203167999U (en) | Vacuum pumping device for tobacco vacuum box | |
| CN112880313A (en) | Silica gel particle ultralow-water-content high-temperature heat pump drying system and control method | |
| CN101817164A (en) | Method for recycling ball milled agent in hard alloy mixed slurry | |
| CN102964341B (en) | The production system of isocyanuric acid three-glycidyl ester | |
| CN204880859U (en) | Machinery vapor recompression heat pump | |
| CN102941214B (en) | Solid salt treatment of wastes produced system in producing for isocyanuric acid three-glycidyl ester | |
| CN211953463U (en) | High-temperature heat pump grain drying system based on waste heat recovery | |
| CN208075589U (en) | High temperature furnace used inert gas purge device | |
| CN202984265U (en) | Disposal system used for solid salt waste in production of triglycidyl isocyanurate (TGIC) | |
| CN201445897U (en) | Alcohol-contained gas collecting device | |
| CN206751640U (en) | A kind of sludge with low moisture content drying plant | |
| CN207797670U (en) | A kind of antioxidant KY-405 finished product drying devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Jianzhong Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100901 |