CN101024207A - Disintegrating method for superfine cool powder - Google Patents
Disintegrating method for superfine cool powder Download PDFInfo
- Publication number
- CN101024207A CN101024207A CN 200610038483 CN200610038483A CN101024207A CN 101024207 A CN101024207 A CN 101024207A CN 200610038483 CN200610038483 CN 200610038483 CN 200610038483 A CN200610038483 A CN 200610038483A CN 101024207 A CN101024207 A CN 101024207A
- Authority
- CN
- China
- Prior art keywords
- microfine coal
- coal preparation
- ball mill
- coupling agent
- microfine
- 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
Landscapes
- Crushing And Grinding (AREA)
Abstract
The invention relates to a fine pulverized coal preparation method, with the following 3-5mm diameter coal into ball mill, through the milling method to get pulverized coal, the process parameters is 100-1000 /pm, time is 5-60 minutes; The use of protection gas or gas-income protection in sealed containers. Cooling water interlayer installed in the ball mill outer drum supply for cooling water when grind ball. Pulverized coal treat surface modification to covered titan acid ester coupling agent or aluminum acid ester coupling agent,and the dispersing agent coating layer, add 100 parts modified pulverized coal, titanium coupling agent0.1-1 parts or with aluminum coupling agent 0.1-1 parts, dispersant0-2 parts, with the above materials into Mill, running 10-60 minutes at 60-95deg.C,150RPM.
Description
Technical field
The present invention relates to powder scientific and engineering field, be specifically related to the pulverizing of powder and modified powder, especially superfine modified preparation method.
Background technology
Powder is carried out ultra-fineization and surface modification treatment, and the chemical reactivity that can improve powder is beneficial to improve the performance of material; As be beneficial to the mechanical property of packing material by the interface affinity that improves powder; The various cohesiveness of regulation and control powder surface are beneficial to the dispersion of powder and use; Obtain powder surface specific physical performance and be beneficial to the functional powder preparation.Therefore, ultra-fineization of powder and surface modification are the important means of high performance material preparation engineering, also are the important contents of new material, new technology and new product development.
Existing superfine modified powder preparation method, what mainly adopt is that the technology of running on foot, that is: first ultra-fine grinding, rear surface modification are divided in elder generation, back.In superfine technique, it is the mechanical crushing method that can effectively obtain smallest particles of generally acknowledging at present that air-flow is pulverized.But, because coal dust has flammability, in the air-flow crushing process, very easily blast, higher with the method processing cost of protectiveness air-flow.
As the ultra-fine air flow crushing device of CN03128399.3 Chinese medicine impact friction, comprise turbine classifier structure, support, setting-impact friction superfine jet mill structure (B) between support (C) and the turbine classifier structure (A), the top of impact friction superfine jet mill structure (B) is connected by flange with turbine classifier structure (A), impact friction ultra-fine it comprise turbine classifier structure, support.
CN03128258.X pulverizes the method with the superfine modified powder of compoundization of modification preparation, in the fluidized bed airflow crushing process, utilize and pulverize the particle unsalted surface that is produced is blocked formation because of chemical bond a large amount of high activity points, pulverize distinctive high turbulent flow and power-chemical effect by air-flow, timely and modifier produces chemical bonding or physisorption, realizes air-flow pulverizing-modified effect; Simultaneously, utilize microwave, realize microwave modification-grinding-aid effect the heating of powder and modifier, the modifying function that excites and microwave intergranular stress humidification to particle.
Ultra-fine grinding of CN02125271.8 plant material and preservative coating combinational processing method 1) earlier material is carried out coarse crushing in impact grinder; 2) additive is added in the said coarse crushing material, mix the machine that grinds with the dither impact type again and carry out surface oxidation-resistant coating processing and fine pulverizing.
CN98111642.6 discloses the normal temperature ultrafine grinding process of a kind of plastics, rubber.Its technological process is: raw material are added to enter in the high speed shear grinder behind the water pulverize, and filter while pulverizing, drying, dispersion then obtains ultra-fine plastics, rubber grain, and average grain diameter is less than 110 μ m.
Summary of the invention
The present invention seeks to: propose a kind of preparation method of microfine coal safely and efficiently.
The object of the present invention is achieved like this: a kind of microfine coal preparation method, and the coal dust of the following particle diameter of 3-5mm adds ball mill, and the mode by ball milling prepares microfine coal, and 100-1000 rev/min, the time is 5-60 minute.Lead to protective gas during ball milling, nitrogen, carbon dioxide are opened the inlet and outlet valve, and feed nitrogen, and oxygen is all replaced away.Fasten valve again.Or use airtight container to feed protective gas continuously.
At ball mill urceolus design cooling water sandwich, can lead to cooling water.On the basis of ball mill add, discharge gate changes into sealed.Each running gear all changes watertight into.Use internal stirrers and outside cylindrical shell to prepare with the ball mill of opposite way rotation.
Coal dust is added airtight ball mill, make outside cylindrical shell and internal stirrers antiport, strengthen impact, collision, extruding, shearing and the homogenization of abrading-ball, thereby realize the ultra-fine grinding of coal dust coal dust.Its fineness can reach 800～12500 orders.On the basis of ball mill add, discharge gate changes into sealed.Each running gear all changes watertight into.Air intake-exhaust mouth and valve are set on ball mill.
Rough coal powder (about diameter 2mm) is added ball mill, sealing.
Open the inlet and outlet valve, and feed nitrogen, oxygen is all replaced away, fasten the inlet and outlet valve again.
The invention reside in after reinforced the ball mill sealing, and inert gas such as filling nitrogen, the danger of oxidation even combustion explosion takes place in the high activity interface of thoroughly avoiding coal dust to be opened in the ultra-fine grinding process.The high chemism that has kept microfine coal simultaneously is for next step application is laid a good foundation.
Improvement of the present invention is to force cooling in the water flowing of ball mill outer wall.Because this method is moved the long period and could be realized ultra-fine grinding under high speed, abrading-ball can produce a large amount of heats to impact, collision, extruding, the shearing of coal dust, as untimely derivation, can promote that the coal dust temperature sharply raises, thereby increase the probability that produces chemical reaction, reduce the high activity on microfine coal surface, make it lose using value.We force logical cooling water at the ball mill outer wall for this reason.In process, heat is taken out of, kept the surface-active of microfine coal by water.
The specific embodiment
Implementation method of the present invention is:
1, on the basis of ball mill add, discharge gate changes into sealed.Each running gear all changes water-stop, mechanical seal or packing etc. into.
2, at ball mill urceolus design cooling water sandwich, can lead to cooling water.
3, air intake-exhaust mouth and valve are set on ball mill.
4, rough coal powder (better about diameter 2mm) is added ball mill, sealing.
5, open the inlet and outlet valve, and feed nitrogen, oxygen is all replaced away.Fasten valve again.
Make the ball mill operation, open cooling water.Determine running time as required.The length of running time is directly proportional with the fineness of coal dust.Running time is long more, and coal dust is thin more.
Be the continous way mode of operation that adopts the side discharging. and feed protective gas continuously.
The special mixing arm of device shaped that the present invention adopts, shunting disk axially is installed on the shaft,
Resulting microfine coal is carried out surface modification treatment, make the clad of its surface coverage titanate coupling agent or aluminate coupling agent and dispersant.Its prescription is (weight):
100 parts of modified super-fine cool-ash,
0.1～1 part of titanate coupling agent,
0.1～1 part of aluminate coupling agent,
0～2 part of dispersant OPE, ethylene bis stearamide or/and microcrystalline wax,
Treatment process: in ball mill, add above-mentioned material titanate coupling agent or/with aluminate coupling agent, got final product in 10-60 minute at 60-95 ℃, 150RPM running.
Above-mentioned material is qualified modified super-fine cool-ash, can be used in the following plastic products: the goods of polyethylene, polypropylene, polyvinyl chloride, polystyrene and ABS (comprising film); And the color of goods is a black, possesses certain ultraviolet aging resistance function, and substitutable carbon is deceived masterbatch.Its production technology is: directly get final product with Powdered the interpolation in proportion in mediating operation in the PVC goods, need not any adjustment; Then must be earlier in other plastics in proportion metering mix the back after parallel parallel dual-screw extruding machine granulation again according to former processes moulding, to guarantee the stable of quality.
The preparation method of microfine coal of the present invention, raw material is a coal dust, its physical and chemical index is: phosphorus content: 〉=90%; Mohs' hardness :≤4; Calorific value 〉=7000 kilojoule per kilogram; Fineness is 800～12500 orders (18～1.25 microns);
Said manufacture method is sealed ball mill grinding, and inert gas such as filling nitrogen is to avoid dust explosion; The logical cooling water of the shell of said sealed ball mill pulverizer is forced cooling, at high temperature loses activity to avoid coal dust.
Claims (10)
1, a kind of microfine coal preparation method is characterized in that the coal dust adding ball mill with 3-5mm following particle diameter, and the mode by ball milling prepares microfine coal, and its technological parameter is 100-1000 rev/min, and the time is 5-60 minute; Use protective gas or feed protective gas continuously at airtight container.
2, microfine coal preparation method according to claim 1 is characterized in that being provided with cooling water sandwich at the ball mill urceolus, logical cooling water when ball milling.
3, microfine coal preparation method according to claim 1 and 2 is characterized in that described protective gas is nitrogen, carbon dioxide or argon gas.
4, microfine coal preparation method according to claim 1 is characterized in that the preferred 150-800 of rotating speed rev/min of ball milling,
5, microfine coal preparation method according to claim 1 uses internal stirrers and outside cylindrical shell to prepare with the ball mill of opposite way rotation when it is characterized in that ball milling.
6, microfine coal preparation method according to claim 1 is characterized in that the preferred 500-800 of rotating speed rev/min of ball milling,
7, microfine coal preparation method according to claim 1 is characterized in that the time is 30-60 minute.
8, microfine coal preparation method according to claim 1 is characterized in that it being the continous way mode of operation that adopts the side discharging, and feeds protective gas continuously.
9, microfine coal preparation method according to claim 1 is characterized in that using sealed ball mill, adds, discharge gate changes into sealedly, and each running gear all changes water-stop or structure into.
10, microfine coal preparation method according to claim 1, it is characterized in that microfine coal is carried out surface modification treatment, make the clad of its surface coverage titanate coupling agent or aluminate coupling agent and dispersant, add 0.1～1 part of 100 parts of modified super-fine cool-ash, titanate coupling agent or/and 0.1～1 part of aluminate coupling agent, 0～2 part of dispersant, in ball mill, add above-mentioned material, 60-95 ℃, 150RPM running 10-60 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610038483 CN101024207A (en) | 2006-02-24 | 2006-02-24 | Disintegrating method for superfine cool powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610038483 CN101024207A (en) | 2006-02-24 | 2006-02-24 | Disintegrating method for superfine cool powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101024207A true CN101024207A (en) | 2007-08-29 |
Family
ID=38743027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610038483 Pending CN101024207A (en) | 2006-02-24 | 2006-02-24 | Disintegrating method for superfine cool powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101024207A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989560A (en) * | 2011-09-15 | 2013-03-27 | 河南飞孟金刚石工业有限公司 | Method for producing diamond micro-powder by using vibration ball mill |
| CN107138508A (en) * | 2017-06-06 | 2017-09-08 | 浙江工业大学温州科学技术研究院 | A kind of coal slime application technology as the second resource |
-
2006
- 2006-02-24 CN CN 200610038483 patent/CN101024207A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989560A (en) * | 2011-09-15 | 2013-03-27 | 河南飞孟金刚石工业有限公司 | Method for producing diamond micro-powder by using vibration ball mill |
| CN107138508A (en) * | 2017-06-06 | 2017-09-08 | 浙江工业大学温州科学技术研究院 | A kind of coal slime application technology as the second resource |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102732063A (en) | Modified fly ash, preparation method thereof, and preparation apparatus thereof | |
| CN107601574A (en) | A kind of nanometer α Fe2O3Preparation method | |
| CN102050972A (en) | Modified rubber composition and preparation method thereof | |
| CN205572775U (en) | Plastics modification particles cooling device | |
| CN209049299U (en) | A kind of environment-friendly type converted starch processing feeding device | |
| CN205112310U (en) | Powder coating serialization production system | |
| CN112743706A (en) | Thermoplastic plastic grinding process | |
| US20060147366A1 (en) | Production process of titania-silica mixed crystal particles having a high bulk density, titania-silica mixed crystal particles obtained by the process and uses thereof | |
| CN101024207A (en) | Disintegrating method for superfine cool powder | |
| CN201543485U (en) | Device used for crushing material below kiln of titanium white device in sulfuric acid method of titanium white | |
| CN102699339A (en) | Device for preparing superfine iron powder by utilizing iron oxide red | |
| CN111632558B (en) | Device and method for continuously preparing nano material or preparing modified nano material | |
| CN1680492A (en) | Composite liquid additive of nano photocatalyst/Tuomalin and its preparation | |
| CN205130336U (en) | Antiseized knot loading attachment of BOPP sheet extruder | |
| CN102086042B (en) | Production method of high dispersion barium sulfate | |
| CN206996790U (en) | A kind of powdered whiting grading crushing device | |
| TW201138975A (en) | Manufacturing method of resin composition for sealing semiconductors and pulverizing apparatus | |
| CN216063419U (en) | High-whiteness weather-resistant titanium dioxide superfine crushing equipment | |
| CN102220037B (en) | Method for preparing modified pyrophyllite rubber reinforcing agent | |
| CN210022405U (en) | Flat air flow crushing device | |
| CN206899565U (en) | A kind of resins of M 80 processing crushes drying device | |
| CN104151874B (en) | Modified nano-titanium dioxide of a kind of wear-resisting enhancing and preparation method thereof | |
| Cherkashina et al. | Investigation of the effect of mechanical activation of powder components on the properties of polyimide composites | |
| CN108084739A (en) | A kind of dry type preparation process of calcium carbonate superfine powder | |
| CN203976417U (en) | The special continuous activation modification unit of sericite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |