CN1095080A - Superfine heavy calcium carbonate and its preparing process - Google Patents
Superfine heavy calcium carbonate and its preparing process Download PDFInfo
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- CN1095080A CN1095080A CN 93111803 CN93111803A CN1095080A CN 1095080 A CN1095080 A CN 1095080A CN 93111803 CN93111803 CN 93111803 CN 93111803 A CN93111803 A CN 93111803A CN 1095080 A CN1095080 A CN 1095080A
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- Prior art keywords
- calcium carbonate
- product
- heavy calcium
- superfine heavy
- raw material
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 54
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 239000004579 marble Substances 0.000 claims abstract description 11
- 238000010298 pulverizing process Methods 0.000 claims abstract description 10
- 230000003068 static effect Effects 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000001737 promoting effect Effects 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 235000012054 meals Nutrition 0.000 claims description 3
- 239000004033 plastic Substances 0.000 abstract description 9
- 229920003023 plastic Polymers 0.000 abstract description 9
- 229920001971 elastomer Polymers 0.000 abstract description 8
- 239000005060 rubber Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 229920005989 resin Polymers 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000006229 carbon black Substances 0.000 abstract description 2
- 238000011049 filling Methods 0.000 abstract description 2
- 239000004408 titanium dioxide Substances 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 14
- 235000019580 granularity Nutrition 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000945 filler Substances 0.000 description 5
- 239000012764 mineral filler Substances 0.000 description 4
- 230000036314 physical performance Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The superfine heavy calcium carbonate is produced with natural marble as material and has calcium carbonate content of at least 98%, whiteness of at least 95 deg and granularity of 2200-6000 mesh. The process comprises the steps of air high-pressure compression → cooling → pressure stabilization → gas distribution → pulverization of the gas flow after high-temperature heating of raw materials → multistage static classification collection → product working procedure. The superfine heavy calcium carbonate prepared by the process is at the domestic leading level in aspects of fineness, whiteness, purity and activity. The experimental application of plastic factories and rubber product factories shows that the product not only can increase the filling amount and reduce the cost, but also can replace expensive resin, titanium dioxide, white carbon black and other raw materials with short supply, and can obviously improve the performance of industrial products.
Description
The present invention relates to a kind of water-ground limestone and the preparation technology thereof of chemical industry inorganic raw material.This product is one of most important mineral filler and properties-correcting agent in plastics, rubber, coating, paint, printing ink, papermaking and the various composite industry.
The lime carbonate meal only plays increment and reduces cost, but product properties is had disadvantageous effect, so addition also is restricted as weighting agent.In recent years, along with developing rapidly and worldwide energy shortage of various matrix materials, cause with the oil is the synthetic resins of raw material, synthetic rubber is in short supply, so that price continuous rise, this will ask for help in plastics, rubber and various composite product, can how fill cheap mineral filler to the greatest extent, further to reduce cost, save the consumption of resin and rubber.Also require heavy addition simultaneously the goods of mineral filler aspect its mechanical and physical performance and processing characteristics, can keep and improve, this water-ground limestone that just requires as mineral filler must be ultramicrofine.Concerning as the heavy calcium carbonate of filler for plastic, its powder is thinner, bigger with the contact area of resin, the interface cohesive force of filler/resin is also bigger, therefore can prevent that filler from moving in resin, make filler and mixed with resin uniform and stable, thereby can improve the mechanical and physical performance of plastics greatly.At present, be the Fine Heavy Calcium Carbonate production technique that raw material adopts dry process at home with the natural crystal, (pressure is 7-8Kg/cm through the air compression
2) → cooling → voltage stabilizing → gas distributor → raw material at room temperature carries out the several operations of comminution by gas stream → finished product.Though this technology equipment used is few, technology is simple, but the product granularity produced generally all is lower than 1250 orders (referring to " Chinese technological achievement complete works " 1991, (2) P330 " development of heavy fine calcium carbonate and application "), so plastics, rubber item are not being had good modified effect aspect its mechanical and physical performance and the processing characteristics; Though can the production fineness reach the above water-ground limestone product of 4000 orders in the world, all be to adopt wet processing production.Produce the superfine heavy calcium carbonate product with wet processing, not only complex process, equipment are various, with high costs, and the water content of its product is much higher than the dry method product, so reduced better quality and the range of application of super fine calcium carbonate as modified fillers therefor.
The objective of the invention is to overcome above-mentionedly do, deficiency that wet processing is produced the water-ground limestone product, developed a kind of superfine heavy calcium carbonate and technology thereof that adopts dry process to make.Its product is not only a kind of cheap and good-quality good weighting agent, is again a kind of well behaved strengthening agent, and it has good modified effect to plastics, rubber.
For realizing purpose of the present invention, adopted following technical scheme:
Product of the present invention is a raw material with the white marble marble, and the calcium carbonate content at least 98% of product, whiteness are at least that 95 degree, water content are less than 0.1%, granularity is the 2200-6000 order.
Also contain promoting agent in the product, to obtain filling effect and modified effect better.
Technology of the present invention is carried out operations such as comminution by gas stream → product through air compression → cooling → voltage stabilizing → gas distribution → raw material, its raw material is extremely crisp through high temperature preheating before comminution by gas stream, and the superfine heavy calcium carbonate after the pulverizing carries out multistage static rank collection and just obtains the said products.
Pressure intensity during the air compression is 10-15Kg/cm
2, temperature is 185 ℃, the Heating temperature during the raw material high temperature preheating is 130-180 ℃, multistage static rank progression is the 4-5 level.
The present invention compares with the wet production superfine heavy calcium carbonate with external, and its technology is simple, equipment is few, cost is low, the product water content is less than 0.1%.The present invention compares with domestic technology with comminution by gas stream dry process water-ground limestone, owing to pulverize increased pressure and increased the raw material heating process, make pulverizing more thorough, again owing to adopted multistage static rank technology (static rank is consumption of power not), can simultaneously varigrained water-ground limestone be separated and collect, both saved the energy, improved the grade quality of product again, reduce loss simultaneously, improved Working environment.The present invention compares with domestic heavy carbon acid product with dry process, because having adopted the white marble marble is raw material, not only product specification reaches 1250 orders, 2200 orders, 4000 orders, 6000 orders, reaches to more than 6000 orders, and its calcium carbonate content height, whiteness height, purity height (referring to annex 1,2), filled up a blank of chemical industry inorganic raw material.This superfine heavy calcium carbonate can be widely used in plastics, rubber, paint, papermaking, daily-use chemical industry, asbestos, coating, welding electrode, medical, and replaces high and nervous, the short product of price (as: titanium dioxide, resin, white carbon black etc.); It can significantly improve the performance (as: gain in strength, elasticity, weathering resistance, increase smooth finish and wear resistance etc.) of mechanicals again another aspect.If be used for plastics, rubber, in this product, add promoting agent, its effect better (referring to annex 3,4).Obviously, the superfine heavy calcium carbonate that adopts this technology to make be that range of application is wide, development prospect great stopping composition and properties-correcting agent.
Below in conjunction with accompanying drawing the embodiment of the invention is elaborated:
Accompanying drawing is a process flow sheet of the present invention.
Embodiment one: material choice white marble marble meal (granularity is the 100-400 order), technology is referring to accompanying drawing.This technology comprises that air compression → cooling → voltage stabilizing → gas distributes the back that heating raw is carried out comminution by gas stream → superfine heavy calcium carbonate and carries out operation such as multistage static rank and finish the production whole process and obtain the different product of granularity.Its pulverization principle general introduction: micronizer mill is used as power with high-pressure air, and the pulverizing feed particles is carried down collision mutually by high velocity air and pulverized in micronizer mill.Its detailed process is: air 1 enters air compressor 2 after filtering, and producing pressure through air compressor 2 is 15Kg/cm
2, temperature is 185 ℃ pressurized air, this pressurized air is cooled to 30 ℃ through water cooler 3 and becomes the room temperature high-pressure air and separate out airborne oil and water, high pressure dry air is after 4 voltage stabilizings of voltage stabilizing gas tank, through gas distributor 5 high-pressure air is divided into again and pulverizes air-flow and feed stream, adjust the flow of pulverizing air-flow and can regulate the pulverizer pressure of micronizer mill 10, the flow of adjusting feed stream can be regulated the feeding coal (feeding pressure) of oscillating feeder 9.In the raw material 6 incoming stock well heaters 7 through fully stirring, be mixed and heated to 160 ℃, and the moisture content of fully getting rid of in the raw material makes raw material send into insulation hopper 8 stored for future use after crisp, high-temperature raw material in the insulation hopper 8 joins in the micronizer mill 10 through oscillating feeder 9 and pulverizes, and its reinforced air pressure is 9Kg/cm
2, pulverizing pressure is 15Kg/cm
2Feeding quantity is 200Kg/h, superfine heavy calcium carbonate powder after the pulverizing carries out by size classification and is collected through multistage static rank device 11,12,14,15 under the carrying of air-flow, gas after the separation is discharged by exhaust blower 17, product 16 granularities and the weight percent collected from classifier 11,12,14,15 are: 3000 orders-4300 order (3-4 μ m) accounts for 4%, 4300-6000 order (1.5-3 μ m) accounts for 88%, 6000 order above (1.5 μ m are following) and accounts for 8%.Its material loss less than 5%, calcium carbonate content at least 98%, whiteness＞95 degree, water content＜0.1% in the product.
Embodiment two, referring to accompanying drawing: different with the foregoing description is: the pressure that air compressor 2 produces is 13Kg/cm
2, raw material 6 Heating temperature in feed heater 7 is 135 ℃, feed pressure is 8Kg/cm
2, pulverizing pressure is 13Kg/cm
2Feeding quantity is 170Kg/h, and product 16 granularities and the weight percent collected from classifier 11,12,14,15 are: 2200-3000 order (4-5 μ m) accounts for 2%, the 3000-4300 order accounts for 5%, the 4300-6000 order accounts for 6% more than accounting for 87%, 6000 orders.In embodiment one, pulverize pressure if get 13Kg/cm
2Also can obtain the product of present embodiment.
Embodiment three, referring to accompanying drawing: the pressure that air compressor 2 produces is 10Kg/cm
2, raw material 6 Heating temperatures are 180 ℃, feed pressure is 6.5Kg/cm
2, pulverize pressure 10Kg/cm
2, inlet amount is 150Kg/h, the granularity of its product 16 and weight percent are: the 2200-3000 order accounts for 5%, the 3000-4300 order accounts for 8%, the 4300-6000 order accounts for 4% more than accounting for 83%, 6000 orders, and other is identical with embodiment one.In embodiment one, two, get 10Kg/cm if pulverize pressure
2Also can get the product of present embodiment.
In the above-described embodiments, will add promoting agent in the raw material, and just can make ultra tiny active water-ground limestone product through technology of the present invention.Used promoting agent can be phosphoric acid fat, metatitanic acid fat, stearic acid etc.Its promoting agent consumption is 1-2.5% with the ratio of raw material 6.
Technology of the present invention can also be used to process other raw material and obtain other ultra tiny product.
Annex 1: examining report
Annex 2: testing certificate
Annex 3: sizing material physical test report
Physical and mechanical properties trial report (1)
Physical and mechanical properties trial report (2)
Annex 4: about using ultramicro active coarse whiting situation
Ultra tiny active water-ground limestone performance is summed up
Claims (5)
1, a kind of is the superfine heavy calcium carbonate of raw material through being processed into the natural marble, it is characterized in that: the calcium carbonate content at least 98% of product, whiteness at least 95 degree, granularity are the 2200-6000 order.
2, superfine heavy calcium carbonate according to claim 1 is characterized in that: raw material is a white marble marble meal.
3, superfine heavy calcium carbonate according to claim 1 and 2 is characterized in that: contain promoting agent in the product.
4, a kind of is that raw material adopts dry process to obtain the production technique of superfine heavy calcium carbonate with the natural marble, comprise that air compression → cooling → voltage stabilizing → gas distribution → raw material carries out the comminution by gas stream operation and gets product, it is characterized in that: raw material is extremely crisp through high temperature preheating before comminution by gas stream, and the superfine heavy calcium carbonate after the pulverizing carries out multistage static rank collection and just obtains the described product of claim 1.
5, the production technique of superfine heavy calcium carbonate according to claim 4 is characterized in that: the pressure intensity during the air compression is 10-15Kg/cm
2, the temperature during high temperature preheating is 130-180 ℃, multistage static rank progression is the 4-5 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111803 CN1095080A (en) | 1993-05-08 | 1993-05-08 | Superfine heavy calcium carbonate and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111803 CN1095080A (en) | 1993-05-08 | 1993-05-08 | Superfine heavy calcium carbonate and its preparing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1095080A true CN1095080A (en) | 1994-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93111803 Pending CN1095080A (en) | 1993-05-08 | 1993-05-08 | Superfine heavy calcium carbonate and its preparing process |
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| Country | Link |
|---|---|
| CN (1) | CN1095080A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334163C (en) * | 2005-06-16 | 2007-08-29 | 王东民 | System for producing micropowder of dense calcium carbonate |
| CN101591029B (en) * | 2008-05-28 | 2011-01-12 | 北京紫光英力化工技术有限公司 | Novel process for preparing caustic soda and ultrafine calcium carbonate through caustification method |
| CN104760982A (en) * | 2014-01-06 | 2015-07-08 | 东莞市五全机械有限公司 | Production process of ultrafine calcium carbonate powder |
| CN107188211A (en) * | 2016-08-16 | 2017-09-22 | 海宁永欣科技咨询有限公司 | The preparation method of improved powdered whiting |
| CN107500331A (en) * | 2017-09-29 | 2017-12-22 | 广西华洋矿源材料有限公司 | A kind of preparation method of precipitated calcium carbonate |
| CN110976040A (en) * | 2019-12-04 | 2020-04-10 | 句容市星辰新型材料有限公司 | Environment-friendly limestone powder production process |
-
1993
- 1993-05-08 CN CN 93111803 patent/CN1095080A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334163C (en) * | 2005-06-16 | 2007-08-29 | 王东民 | System for producing micropowder of dense calcium carbonate |
| CN101591029B (en) * | 2008-05-28 | 2011-01-12 | 北京紫光英力化工技术有限公司 | Novel process for preparing caustic soda and ultrafine calcium carbonate through caustification method |
| CN104760982A (en) * | 2014-01-06 | 2015-07-08 | 东莞市五全机械有限公司 | Production process of ultrafine calcium carbonate powder |
| CN107188211A (en) * | 2016-08-16 | 2017-09-22 | 海宁永欣科技咨询有限公司 | The preparation method of improved powdered whiting |
| CN107500331A (en) * | 2017-09-29 | 2017-12-22 | 广西华洋矿源材料有限公司 | A kind of preparation method of precipitated calcium carbonate |
| CN110976040A (en) * | 2019-12-04 | 2020-04-10 | 句容市星辰新型材料有限公司 | Environment-friendly limestone powder production process |
| CN110976040B (en) * | 2019-12-04 | 2021-04-13 | 句容市星辰新型材料有限公司 | Environment-friendly limestone powder production process |
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