CN103283979A - Preparation method of montmorillonite powder with large specific surface for feeds and papermaking - Google Patents
Preparation method of montmorillonite powder with large specific surface for feeds and papermaking Download PDFInfo
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Abstract
The invention discloses a preparation method of montmorillonite powder with a large specific surface for feeds and papermaking, and application. The preparation method comprises the following steps of: (1) crushing and winnowing manually sorted montmorillonite lump ores, removing quartz and feldspar mineral, which are large in specific gravity and hardness, and dissociated with montmorillonite; (2) mixing and evenly agitating the winnowed montmorillonite concentrate powder with phosphate solution; (3) tightly stockpiling and curing wet feed containing a phosphate dispersant for 5-7 days, so that the montmorillonite fully reacts with phosphate anions and expands; (4) rapidly puffing and drying the cured montmorillonite wet feed by a microwave drying oven; (5) grinding the dried loose granules by a high-speed roller mill, inspecting and packaging the powder to form the product. The preparation technology of the montmorillonite powder with the large specific surface has the characteristics of being reasonable in flow design, full in energy utilization and the like; the powder is suitable for the application fields of the montmorillonite powder with large specific surface and high adsorbability required by the feeds, papermaking and the like.
Description
Technical field:
The invention belongs to the mineral manufacture field, be particularly related to the preparation method of a kind of feed and paper grade (stock) Large ratio surface montmorillonite powder, the montmorillonite powder of preparation has absorption property preferably to mould, string etc., is fit to the application of needs bigger serfaces such as feed, papermaking retention auxiliary agent, high adsorption montmorillonite powder.
Background technology:
Montmorillonite is the natural stratiform nano-mineral with high absorption speciality, but its ecosystem of the montmorillonite of natural output is owing to be subjected to interlayer cation electropositive and the electronegative charge attraction effect of lamella, the lamella of montmorillonite structure cell is that the multilayer stack is stacked in together, specific surface and absorption property when detection and use are all lower, do not reach the ideal state that montmorillonite dissociates.Adopt conventional at present microwave drying and disintegrating process only can and smash piece or particle ore deposit drying, and the sufficient solution of nanoscale montmorillonite structure cell lamella that microcosmic can not be the existence of stacking shape is scattered, the potential bigger serface that montmorillonite has and important absorption property can not demonstrate fully, and its high adsorption with higher using value is subjected to bigger restriction especially.
At present the conventional montmorillonite lamella solution separating process that adopts is to be made into buck or salting liquid earlier with being about the soda ash of montmorillonite quality 5% or sodium chloride or sodium fluoride, montmorillonite mixes the back and extrudes sodium by extruder with solution, again or natural drying, tunnel cave, revolution hot-blast stove crushed after being dried, its dry main process of removing moisture is carried out to the lining outward by particle, and it also is comparatively slow that its moisture is deviate from speed; And to this high-hydroscopicity of montmorillonite, mineral that viscosity is big, the slow evaporation of outside moisture easily forms hard housing at solid-liquid interface, further removing of parcel, the slow internal moisture of resistance makes that the powder specific surface is little, drying time is long, and technology is generally dewatered about 10%; In addition, to the application of feed auxiliary agent, if adopt the sodium solution separating process of 5% soda ash or sodium salt system, certainly lead to the meta-alkalescence of higher pH value or the powder of higher sodium ion concentration, can not satisfy feedstuff industry to the requirement of auxiliary agent requirement pH value neutrality or low sodium ion.
Microwave technology has certain application report at the bentonite ore manufacture field, utilize the test of microwave radioactivation that calcium-base bentonite is made sodium bentonite as report, its technological core is to utilize microwave energy to impel the calcium ion-exchanged between montmorillonite layer to be sodium ion (6 phases in 2004 fast, chemical industry mineral and processing, P10, Cao Yuhong etc., microwave radiation dry process sodium-based montmorillonite); At the synthetic reaction process of bentonite inorganic gel application report (5 phases in 2006, nonmetallic ore, P21, Feng Zhen, the synthetic and application in toothpaste of the microwave of mineral inorganic gel) is arranged also with lower powered microwave reactor in addition; But utilize HIGH-POWERED MICROWAVES device expanded and dry processing montmorillonite fast, by microwave energy to the wet montmorillonite of the phosphoric acid,diluted salting liquid (30%-50%) that contains high concentration expand water, the phosphate anion snap action of material, produce montmorillonite particulate material fluffy, that internal surface area is abundant, particulate material is further impacted, broken up with high speed overhang roll mill again, the powder specific area of preparation is big, application is at feed and the special-purpose retention auxiliary agent of papermaking of high added value, and its technology of preparing and application are not seen open.
At present, HIGH-POWERED MICROWAVES rapid draing stove and high speed overhang roll mill has been ripe equipment in manufacturing field of equipment separately, the two is combined preparation for Large ratio surface montmorillonite powder with specific mineral with auxiliary agent dispersion processing technology of preparing, to satisfy industries such as feed, papermaking retention auxiliary agent the specific (special) requirements of high absorption property is had novelty and actual application value preferably.
Summary of the invention:
The objective of the invention is at the high-purity montmorillonite raw ore, adopt suitable selection by winnowing preliminary treatment, batching dispersion, explosion puffing drying and impact comminution technology, specifically with selection by winnowing desanding, phosphate do dispersed modifier, HIGH-POWERED MICROWAVES is expanded and quick selection by winnowing, modification, explosion puffing drying, the crushing process of moisture at high proportion removed from inside to outside dry, high speed overhang roll powder-grinding technology interlock combination.Technology has following major advantage: the one, montmorillonite in conjunction with last an amount of phosphate anion can promote the montmorillonite lamella dispersion, dissociate and pulverize, and phosphate is the useful component that the feed auxiliary agent is used; The 2nd, high-load moisture overflows from inside to outside fast and will produce certain inside and outside water vapour pressure reduction, and its active force can produce expanded, broken, the dry continuous action of " explosion " property of bigger effect to the montmorillonite lamella, accelerates carrying out dry and crushing process; The 3rd, the sheet stack that high speed overhang roll mill is piled up the montmorillonite stratiform than Raymond mill has better impact, breaks up, pulverization, milling efficiency is higher, and high speed overhang roll mill is mainly used in calcite dicalcium powder processed at present, has the advantages that output is big, milling efficiency is high.Selection by winnowing preliminary treatment, batching dispersion, explosion puffing drying can better satisfy applications such as feed, papermaking retention auxiliary agent to the application requirements of needs bigger serface, high absorption property montmorillonite powder with the powder of a whole set of technology preparation of impact comminution, big surperficial montmorillonite powder apply to reduce feed and paper making additive consumption, improve feed quality, raising livestock and poultry survival rate with paper-making industry to be improved into the paper fiber recovery significant.
The preparation method and application of this Large ratio surface montmorillonite powder, taken full advantage of the absorption of montmorillonite and expansion, microwave bulking and when dry hydrone by interior with overflow simultaneously outward, high speed impact overhang roll mill impacts the good characteristic of breaing up property, a whole set of technology has the advantages that flow scheme design is reasonable, the energy utilization is abundant, crush efficiency is high.
For achieving the above object, the present invention includes following steps:
1., the fragmentation of montmorillonite lump ore, the selection by winnowing that will manually choose, it is big and be quartz and the feldspar mineral that dissociate with montmorillonite to remove proportion and hardness;
2., with the montmorillonite concentrate after the selection by winnowing and phosphate solution mixing and stirring;
3., stored up slaking 5-7 days the mixing wet feed of phosphoric acid dipersant is airtight, make montmorillonite and phosphate anion fully react, expand;
4., slaking is qualified montmorillonite wet feed is expanded, dry fast with microwave drier;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, powder through check, be packaged as finished product.
More specifically, 1. described step uses montmorillonite lump ore control smectite content 〉=80%, the cation exchange total amount 0.6-1.0mmoL/g montmorillonite ore deposit of artificial selection.
More specifically, described step 2.-phosphate that 3. uses as sodium pyrophosphate, calgon, sodium phosphate trimer any one, preferred sodium pyrophosphate; The phosphate consumption is the 0.3%-0.6% of montmorillonite concentrate quality after the selection by winnowing, is made into mass concentration when using and is the aqueous solution of 0.30%-1.5%, and wet montmorillonite expands and expects to contain adsorbed water 30%-50%.
More specifically, the application requirements of feed, papermaking retention auxiliary agent industry needs bigger serface, high absorption property montmorillonite powder is mainly satisfied in the application that 1.-5. prepares powder of described step.
Beneficial effect of the present invention is as follows:
Adopt the present invention of foregoing invention content technologies scheme, by adopting rational selection by winnowing preliminary treatment, batching dispersion, explosion puffing drying and the pulverizing process integration that dissociates, have and efficiently make the montmorillonite lamella disperse, dissociate and crushing effect, flow process can be accelerated the carrying out of dry and crushing process.And an amount of phosphate that adopts is the useful component of application system such as feed auxiliary agent, the montmorillonite powder specific area that makes is big, absorption property is excellent, a whole set of technology has the advantages that flow scheme design is reasonable, the energy utilization is abundant, milling efficiency is high, and technology can satisfy applications such as feed, papermaking retention auxiliary agent to the application requirements of needs bigger serface, high adsorption efficiency montmorillonite powder.
The specific embodiment:
Below in conjunction with specific embodiment the present invention is made further explanation and description:
Embodiment 1:
A kind of feed preparation method and application of Large ratio surface montmorillonite powder, its step is as follows:
1., will manually choose smectite content 80%, 1050 kilograms of fragmentations of montmorillonite lump ore of cation exchange total amount 0.6mmoL/g montmorillonite, selection by winnowing, remove proportion and hardness and be quartz and the feldspar mineral that dissociate greatly and with montmorillonite, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of sodium pyrophosphates and 397 kg of water are made into the sodium pyrophosphate mass concentration is 0.75% solution, with 1000 kilograms of montmorillonite fine ore mixing and stirring;
3., stored up slaking 5 days with mixed wet feed is airtight, make montmorillonite and pyrophosphate ion fully react, expand, montmorillonite concentrate wet feed contains adsorbed water about 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with the HIGH-POWERED MICROWAVES drying oven, control dried particle and contain adsorbed water less than 10%, about 20 minutes of microwave bulking, drying operation time;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, the detection specific area is 170m
2/ g can be used as the feed special use through packing and takes off that mould dose of finished product or other are organic to take off mould agent carrier auxiliary agent.
Embodiment 2:
A kind of feed preparation method and application of Large ratio surface montmorillonite powder, its step is as follows:
1., will manually choose smectite content 80%, 1050 kilograms of fragmentations of montmorillonite lump ore of cation exchange total amount 0.6mmoL/g montmorillonite, selection by winnowing, remove proportion and hardness and be quartz and the feldspar mineral that dissociate greatly and with montmorillonite, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of calgons and 397 kg of water are made into the calgon mass concentration is 0.75% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., stored up slaking 7 days with mixed wet feed is airtight, make montmorillonite and hexa metaphosphoric acid radical ion fully react, expand, montmorillonite concentrate wet feed contains adsorbed water about 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with the HIGH-POWERED MICROWAVES drying oven, control dried particle and contain adsorbed water less than 10%, about 20 minutes of microwave bulking, drying operation time;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, the detection specific area is 150m
2/ g can be used as the feed special use through packing and takes off that mould dose of finished product or other are organic to take off mould agent carrier auxiliary agent.
Embodiment 3:
A kind of preparation method and application of paper grade (stock) Large ratio surface montmorillonite powder, its step is as follows:
1., will manually choose smectite content 80%, 1040 kilograms of fragmentations of montmorillonite lump ore of cation exchange total amount 1.0mmoL/g montmorillonite, selection by winnowing, remove proportion and hardness and be quartz and the feldspar mineral that dissociate greatly and with montmorillonite, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of sodium phosphate trimers and 397 kg of water are made into the sodium phosphate trimer mass concentration is 0.75% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., stored up slaking 7 days with mixed wet feed is airtight, make montmorillonite and phosphate anion fully react, expand, montmorillonite concentrate wet feed contains adsorbed water about 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with the HIGH-POWERED MICROWAVES drying oven, control dried particle and contain adsorbed water less than 10%, about 20 minutes of microwave bulking, drying operation time;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, the detection specific area is 140m
2/ g can be used as the special-purpose montmorillonite powder of papermaking retention through packing and uses.
Embodiment 4:
A kind of preparation method and application of paper grade (stock) Large ratio surface montmorillonite powder, its step is as follows:
1., will manually choose smectite content 80%, 1040 kilograms of fragmentations of montmorillonite lump ore of cation exchange total amount 1.0mmoL/g montmorillonite, selection by winnowing, remove proportion and hardness and be quartz and the feldspar mineral that dissociate greatly and with montmorillonite, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 6 kilograms of sodium pyrophosphates and 394 kg of water are made into the sodium phosphate trimer mass concentration is 1.50% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., stored up slaking 6 days with mixed wet feed is airtight, make montmorillonite and pyrophosphate ion fully react, expand, montmorillonite concentrate wet feed contains adsorbed water about 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with the HIGH-POWERED MICROWAVES drying oven, control dried particle and contain adsorbed water less than 10%, about 20 minutes of microwave bulking, drying operation time;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, obtain 1005 kilograms of the powders of granularity d97≤45 μ mm, the detection specific area is 180m
2/ g can be used as the special-purpose montmorillonite powder of papermaking retention through packing and uses.
Embodiment 5:
A kind of feed preparation method and application of Large ratio surface montmorillonite powder, its step is as follows:
1., will manually choose smectite content 90%, 1020 kilograms of fragmentations of montmorillonite lump ore of cation exchange total amount 0.8mmoL/g montmorillonite, selection by winnowing, remove proportion and hardness and be quartz and the feldspar mineral that dissociate greatly and with montmorillonite, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 4 kilograms of sodium pyrophosphates and 400 kg of water are made into the sodium pyrophosphate mass concentration is 1.0% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., stored up slaking 5 days with mixed wet feed is airtight, make montmorillonite and pyrophosphate ion fully react, expand, montmorillonite concentrate wet feed contains adsorbed water about 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with the HIGH-POWERED MICROWAVES drying oven, control dried particle and contain adsorbed water less than 10%, about 20 minutes of microwave bulking, drying operation time;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, obtain 1003 kilograms of the powders of granularity d97≤45 μ mm, the detection specific area is 220m
2/ g can be used as the feed special use through packing and takes off that mould dose of finished product or other are organic to take off mould agent carrier auxiliary agent.
Embodiment 6:
A kind of preparation method and application of paper grade (stock) Large ratio surface montmorillonite powder, its step is as follows:
1., will manually choose smectite content 85%, 1050 kilograms of fragmentations of montmorillonite lump ore of cation exchange total amount 0.8mmoL/g montmorillonite, selection by winnowing, remove proportion and hardness and be quartz and the feldspar mineral that dissociate greatly and with montmorillonite, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 5 kilograms of calgons and 400 kg of water are made into the hexa metaphosphoric acid na concn is 1.2% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., stored up slaking 5 days with mixed wet feed is airtight, make montmorillonite and hexa metaphosphoric acid radical ion fully react, expand, montmorillonite concentrate wet feed contains adsorbed water about 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with the HIGH-POWERED MICROWAVES drying oven, control dried particle and contain adsorbed water less than 10%, about 20 minutes of microwave bulking, drying operation time;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, obtain 1004 kilograms of the powders of granularity d97≤45 μ mm, the detection specific area is 180m
2/ g can be used as the special-purpose montmorillonite powder of papermaking retention through packing and uses.
Embodiment 7:
A kind of feed preparation method and application of Large ratio surface montmorillonite powder, its step is as follows:
1., will manually choose smectite content 80%, 1050 kilograms of fragmentations of montmorillonite lump ore of cation exchange total amount 0.6mmoL/g montmorillonite, selection by winnowing, remove proportion and hardness and be quartz and the feldspar mineral that dissociate greatly and with montmorillonite, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of sodium pyrophosphates and 670 kg of water are made into the sodium pyrophosphate mass concentration is 0.45% solution, with 1000 kilograms of montmorillonite fine ore mixing and stirring;
3., stored up slaking 5 days with mixed wet feed is airtight, make montmorillonite and pyrophosphate ion fully react, expand, montmorillonite concentrate wet feed contains adsorbed water about 40%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with the HIGH-POWERED MICROWAVES drying oven, control dried particle and contain adsorbed water less than 10%, about 23 minutes of microwave bulking, drying operation time;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, the detection specific area is 230m
2/ g can be used as the feed special use through packing and takes off that mould dose of finished product or other are organic to take off mould agent carrier auxiliary agent.
Embodiment 8:
A kind of feed preparation method and application of Large ratio surface montmorillonite powder, its step is as follows:
1., will manually choose smectite content 80%, 1050 kilograms of fragmentations of montmorillonite lump ore of cation exchange total amount 0.6mmoL/g montmorillonite, selection by winnowing, remove proportion and hardness and be quartz and the feldspar mineral that dissociate greatly and with montmorillonite, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of sodium pyrophosphates and 1000 kg of water are made into the sodium pyrophosphate mass concentration is 0.30% solution, with 1000 kilograms of montmorillonite fine ore mixing and stirring;
3., stored up slaking 5 days with mixed wet feed is airtight, make montmorillonite and pyrophosphate ion fully react, expand, montmorillonite concentrate wet feed contains adsorbed water about 50%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with the HIGH-POWERED MICROWAVES drying oven, control dried particle and contain adsorbed water less than 10%, about 25 minutes of microwave bulking, drying operation time;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, the detection specific area is 245m
2/ g can be used as the feed special use through packing and takes off that mould dose of finished product or other are organic to take off mould agent carrier auxiliary agent.
Claims (3)
1. the preparation method of a feed and paper grade (stock) Large ratio surface montmorillonite powder is characterized in that step is as follows:
1., the fragmentation of montmorillonite lump ore, the selection by winnowing that will manually choose, it is big and be quartz and the feldspar mineral that dissociate with montmorillonite to remove proportion and hardness;
2., with the montmorillonite concentrate after the selection by winnowing and phosphate solution mixing and stirring;
3., stored up slaking 5-7 days the mixing wet feed of phosphoric acid dipersant is airtight, make montmorillonite and phosphate anion fully react, expand;
4., the montmorillonite wet feed of slaking is expanded, dry fast with microwave drier;
5., dried discrete particles is broken with high speed overhang roll abrasive dust, powder through check, be packaged as finished product.
2. the preparation method of a kind of feed according to claim 1 and paper grade (stock) Large ratio surface montmorillonite powder, it is characterized in that 1. described step use montmorillonite lump ore smectite content 〉=80% of artificial selection, cation exchange total amount 0.6-1.0mmoL/g montmorillonite ore deposit.
3. the preparation method of a kind of feed according to claim 1 and paper grade (stock) Large ratio surface montmorillonite powder, it is characterized in that described step 2., the phosphate that 3. uses as sodium pyrophosphate, calgon, sodium phosphate trimer any one, preferred sodium pyrophosphate; The phosphate consumption is the 0.3%-0.6% of selection by winnowing montmorillonite concentrate amount, is made into mass concentration when using and is the aqueous solution of 0.30%-1.5%, and wet montmorillonite expands and expects to contain adsorbed water 30%-50%.
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Cited By (2)
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| CN104543339A (en) * | 2015-01-26 | 2015-04-29 | 中国农业大学 | Microwave conditioning production process of feeds |
| CN104799017A (en) * | 2014-01-24 | 2015-07-29 | 内蒙古润隆化工有限责任公司 | Preparation method of modified montmorillonite powder for feeds |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104799017A (en) * | 2014-01-24 | 2015-07-29 | 内蒙古润隆化工有限责任公司 | Preparation method of modified montmorillonite powder for feeds |
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Address after: Ningcheng County, the Inner Mongolia Autonomous Region City, Chifeng Siping Village 024200 Co-patentee after: Sun Yaguang Patentee after: Inner Mongolia Runlong bentonite Technology Co., Ltd Address before: Ningcheng County, the Inner Mongolia Autonomous Region City, Chifeng Siping Village 024200 Co-patentee before: Sun Yaguang Patentee before: R&L Chemical Industry Inner Mongolia Co., Ltd. |
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