CN103283979B - 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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- CN103283979B CN103283979B CN201310237289.4A CN201310237289A CN103283979B CN 103283979 B CN103283979 B CN 103283979B CN 201310237289 A CN201310237289 A CN 201310237289A CN 103283979 B CN103283979 B CN 103283979B
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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 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 good absorption property to mould, string etc., is applicable to the Application Areas of the 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 being subject to the electronegative charge attraction effect of interlayer cation electropositive and lamella, the lamella of montmorillonite structure cell is that multiple-layer stacked is stacked in together, specific surface and absorption property when detecting and using are all lower, do not reach the ideal state that montmorillonite dissociates.Adopt conventional at present microwave drying and disintegrating process only piece or particle ore deposit can be dried and smash, and the sufficient solution of nanoscale montmorillonite structure cell lamella that microcosmic can not be to the existence of stacking shape is scattered, the potential bigger serface that montmorillonite has and important absorption property can not fully demonstrate, and its high adsorption with higher using value is subject to larger restriction especially.
The conventional montmorillonite lamella solution separating process adopting is at present to be first made into buck or salting liquid by being about the soda ash of montmorillonite quality 5% or sodium chloride or sodium fluoride, montmorillonite is extruded sodium by extruder after mixing 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 inner outward by particle, and it is also comparatively slow that its moisture is deviate from speed; And to this high-hydroscopicity of montmorillonite, mineral that viscosity is large, 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 powder specific surface is little, drying time is long, and technique is generally dewatered in 10% left and right; 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 meet the requirement of feedstuff industry to auxiliary agent requirement pH value neutrality or low sodium ion.
Microwave technology has certain application report at bentonite ore manufacture field, as report utilizes microwave activation test, calcium-base bentonite is made to sodium bentonite, its technological core is that to utilize microwave energy to impel fast the calcium ion-exchanged between montmorillonite layer be sodium ion (6 phases in 2004, chemical industry mineral and processing, P10, Cao Yuhong etc., Microwave radiation for dried-making Na-montmonillonite); Another also have application report (P21, Feng Zhen, the microwave of Mineral Inorganic Gel synthesizes and application in toothpaste for 5 phases in 2006, nonmetallic ore) at the synthetic reaction process of bentonite inorganic gel with lower powered microwave reactor; But utilize HIGH-POWERED MICROWAVES device expanded and dry processing montmorillonite fast, water, the phosphate anion snap action of the wet montmorillonite expansion material by microwave energy to the phosphoric acid,diluted salting liquid (30%-50%) containing high concentration, produce the montmorillonite particulate material fluffy, internal surface area is abundant, particulate material is further impacted, broken up with high speed overhang roll mill again, the powder specific-surface area detection of preparation is large, Application Areas is for feed and the special retention auxiliary agent of papermaking of high added value, and it is open that its technology of preparing and application have no.
At present, HIGH-POWERED MICROWAVES rapid draing stove and high speed overhang roll mill have been more ripe equipment in manufacturing field of equipment separately, the two is combined with auxiliary agent dispersion processing technology of preparing and is used for the preparation of Large ratio surface montmorillonite powder with specific mineral, to meet the industry such as feed, Papermaking Retention auxiliary agent, the specific (special) requirements of high absorption property is had to good novelty and actual application value.
Summary of the invention
The object of the invention is to for high-purity montmorillonite raw ore, adopt suitable selection by winnowing preliminary treatment, batching dispersion, explosion puffing drying and impact comminution technique, specifically do with selection by winnowing desanding, phosphate that dispersed modifier, HIGH-POWERED MICROWAVES are expanded and dry, quick selection by winnowing, modification, explosion puffing drying, the crushing process of moisture at high proportion removed from inside to outside of high speed overhang roll mill powder-making technique interlock combination.Technology has following major advantage: the one, and high-load moisture fast [z1] introversive outer overflowing will produce certain inside and outside water vapour pressure reduction, its active force can produce to montmorillonite lamella expanded, broken, the dry continuous action of " explosion " property of larger effect, accelerates carrying out dry and crushing process; The 2nd, montmorillonite in conjunction with upper appropriate phosphate anion can promote montmorillonite lamella dispersion, dissociate and pulverize, and phosphate is the useful component of feed auxiliary agent application; The 3rd, the sheet stack that high speed overhang roll mill is piled up montmorillonite stratiform compared with 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, have the advantages that output is large, milling efficiency is high.Selection by winnowing preliminary treatment, batching dispersion, explosion puffing drying can better meet the application requirements of Application Areas to needs bigger serface, high absorption property montmorillonite powder such as feed, Papermaking Retention auxiliary agent with powder prepared by a whole set of technology of impact comminution, the applying reducing feed and paper making additive consumption, improve feed quality of large surperficial montmorillonite powder, raising livestock and poultry survival rate with paper-making industry to be improved into paper fiber recovery significant.
The preparation method and application of this Large ratio surface montmorillonite powder, take full advantage of the absorption of montmorillonite and expansion, microwave bulking and when dry hydrone by interiorly and outer overflowing simultaneously, high speed impact overhang roll mill impacts the characteristic that breaing up property is good, a whole set of technique have flow scheme design rationally, energy utilization is abundant, crush efficiency is high feature.
For achieving the above object, the present invention includes following steps:
1., by smectite content >=80%, the montmorillonite lump ore of cation exchange total amount 0.6-1.0mmoL/g is through broken, artificial selection, selection by winnowing, removes proportion and hardness large and be with montmorillonite the quartz and the spectra that dissociate;
2., by the montmorillonite fine ore obtaining and phosphate solution mixing and stirring;
3., by airtight the mixing wet feed of the phosphate-containing dispersant slaking 5-7 days that stores up, make montmorillonite fully react, expand with phosphate anion, phosphate be sodium pyrophosphate, calgon, sodium phosphate trimer any one, phosphate consumption is the 0.3%-0.6% of montmorillonite fine ore amount, is made into the aqueous solution that mass concentration is 0.30%-1.5% when use;
4., by micro-wave oven expanded, dry processing fast for the montmorillonite wet feed of slaking, in the time that wet montmorillonite expansion material contains adsorbed water 30%, processing time is 20 minutes, in the time that wet montmorillonite expansion material contains adsorbed water 40%, processing time is 23 minutes, in the time that wet montmorillonite expansion material contains adsorbed water 50%, the processing time is 25 minutes;
5., dried discrete particles is pulverized with high speed overhang roll mill, powder obtains finished product through check specific area.
More specifically, described step 2., 3. the wet montmorillonite after slaking expands material containing adsorbed water 30%-50%.
More specifically, described step 1.-application of 5. preparing powder mainly meets the application requirements of feed, Papermaking Retention auxiliary industry needs bigger serface, high absorption property montmorillonite powder.
beneficial effect of the present invention
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 montmorillonite lamella disperse, dissociate and crushing effect, flow process can be accelerated the carrying out of dry and crushing process.And the appropriate phosphate adopting is the useful component of the application systems such as feed auxiliary agent, the montmorillonite powder specific area that makes is large, absorption property is excellent, a whole set of technique has the advantages that flow scheme design is reasonable, energy utilization is abundant, milling efficiency is high, and technology can meet the application requirements of Application Areas to needs bigger serface, high adsorption efficiency montmorillonite powder such as feed, Papermaking Retention auxiliary agent.
The specific embodiment
embodiment 1
Preparation method and application for Large ratio surface montmorillonite powder for feed, 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, removal proportion and hardness are large and be with montmorillonite the quartz and the spectra that dissociate, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of sodium pyrophosphates and 397 kg of water are made into sodium pyrophosphate mass concentration is 0.75% solution, with 1000 kilograms of montmorillonite fine ore mixing and stirring;
3., store up slaking 5 days by airtight mixed wet feed, make montmorillonite fully react, expand with pyrophosphate ion, montmorillonite concentrate wet feed is containing adsorbed water 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with HIGH-POWERED MICROWAVES drying oven, control dried particle and be less than 10%, microwave bulking, drying operation time 20 minutes containing adsorbed water;
5., dried discrete particles is pulverized with high speed overhang roll mill, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, detection specific area is 170m
2/ g, can be used as the special de-mould dose of finished product of feed or other organic de-mould agent carrier auxiliary agents through packing.
embodiment 2
Preparation method and application for Large ratio surface montmorillonite powder for feed, 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, removal proportion and hardness are large and be with montmorillonite the quartz and the spectra that dissociate, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of calgons and 397 kg of water are made into calgon mass concentration is 0.75% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., store up slaking 7 days by airtight mixed wet feed, make montmorillonite fully react, expand with hexa metaphosphoric acid radical ion, montmorillonite concentrate wet feed is containing adsorbed water 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with HIGH-POWERED MICROWAVES drying oven, control dried particle and be less than 10%, microwave bulking, drying operation time 20 minutes containing adsorbed water;
5., dried discrete particles is pulverized with high speed overhang roll mill, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, detection specific area is 150m
2/ g, can be used as the special de-mould dose of finished product of feed or other organic de-mould agent carrier auxiliary agents through packing.
embodiment 3
Preparation method and application for 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, removal proportion and hardness are large and be with montmorillonite the quartz and the spectra that dissociate, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of sodium phosphate trimers and 397 kg of water are made into sodium phosphate trimer mass concentration is 0.75% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., store up slaking 7 days by airtight mixed wet feed, make montmorillonite fully react, expand with phosphate anion, montmorillonite concentrate wet feed is containing adsorbed water 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with HIGH-POWERED MICROWAVES drying oven, control dried particle and be less than 10%, microwave bulking, drying operation time 20 minutes containing adsorbed water;
5., dried discrete particles is pulverized with high speed overhang roll mill, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, detection specific area is 140m
2/ g, can be used as the special montmorillonite powder application of Papermaking Retention through packing.
embodiment 4
Preparation method and application for 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, removal proportion and hardness are large and be with montmorillonite the quartz and the spectra that dissociate, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 6 kilograms of sodium pyrophosphates and 394 kg of water are made into sodium phosphate trimer mass concentration is 1.50% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., store up slaking 6 days by airtight mixed wet feed, make montmorillonite fully react, expand with pyrophosphate ion, montmorillonite concentrate wet feed is containing adsorbed water 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with HIGH-POWERED MICROWAVES drying oven, control dried particle and be less than 10%, microwave bulking, drying operation time 20 minutes containing adsorbed water;
5., dried discrete particles is pulverized with high speed overhang roll mill, obtain 1005 kilograms of the powders of granularity d97≤45 μ mm, detection specific area is 180m
2/ g, can be used as the special montmorillonite powder application of Papermaking Retention through packing.
embodiment 5
Preparation method and application for Large ratio surface montmorillonite powder for feed, 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, removal proportion and hardness are large and be with montmorillonite the quartz and the spectra that dissociate, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 4 kilograms of sodium pyrophosphates and 400 kg of water are made into sodium pyrophosphate mass concentration is 1.0% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., store up slaking 5 days by airtight mixed wet feed, make montmorillonite fully react, expand with pyrophosphate ion, montmorillonite concentrate wet feed is containing adsorbed water 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with HIGH-POWERED MICROWAVES drying oven, control dried particle and be less than 10%, microwave bulking, drying operation time 20 minutes containing adsorbed water;
5., dried discrete particles is pulverized with high speed overhang roll mill, obtain 1003 kilograms of the powders of granularity d97≤45 μ mm, detection specific area is 220m
2/ g, can be used as the special de-mould dose of finished product of feed or other organic de-mould agent carrier auxiliary agents through packing.
embodiment 6
Preparation method and application for 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, removal proportion and hardness are large and be with montmorillonite the quartz and the spectra that dissociate, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 5 kilograms of calgons and 400 kg of water are made into hexa metaphosphoric acid na concn is 1.2% solution, with 1000 kilograms of montmorillonite concentrate mixing and stirring;
3., store up slaking 5 days by airtight mixed wet feed, make montmorillonite fully react, expand with hexa metaphosphoric acid radical ion, montmorillonite concentrate wet feed is containing adsorbed water 30%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with HIGH-POWERED MICROWAVES drying oven, control dried particle and be less than 10%, microwave bulking, drying operation time 20 minutes containing adsorbed water;
5., dried discrete particles is pulverized with high speed overhang roll mill, obtain 1004 kilograms of the powders of granularity d97≤45 μ mm, detection specific area is 180m
2/ g, can be used as the special montmorillonite powder application of Papermaking Retention through packing.
embodiment 7
Preparation method and application for Large ratio surface montmorillonite powder for feed, 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, removal proportion and hardness are large and be with montmorillonite the quartz and the spectra that dissociate, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of sodium pyrophosphates and 670 kg of water are made into sodium pyrophosphate mass concentration is 0.45% solution, with 1000 kilograms of montmorillonite fine ore mixing and stirring;
3., store up slaking 5 days by airtight mixed wet feed, make montmorillonite fully react, expand with pyrophosphate ion, montmorillonite concentrate wet feed is containing adsorbed water 40%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with HIGH-POWERED MICROWAVES drying oven, control dried particle and be less than 10%, microwave bulking, drying operation time 23 minutes containing adsorbed water;
5., dried discrete particles is pulverized with high speed overhang roll mill, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, detection specific area is 230m
2/ g, can be used as the special de-mould dose of finished product of feed or other organic de-mould agent carrier auxiliary agents through packing.
embodiment 8
Preparation method and application for Large ratio surface montmorillonite powder for feed, 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, removal proportion and hardness are large and be with montmorillonite the quartz and the spectra that dissociate, obtain 1000 kilograms of montmorillonite concentrate particles;
2., 3 kilograms of sodium pyrophosphates and 1000 kg of water are made into sodium pyrophosphate mass concentration is 0.30% solution, with 1000 kilograms of montmorillonite fine ore mixing and stirring;
3., store up slaking 5 days by airtight mixed wet feed, make montmorillonite fully react, expand with pyrophosphate ion, montmorillonite concentrate wet feed is containing adsorbed water 50%;
4., the montmorillonite wet feed of slaking is expanded, dry fast with HIGH-POWERED MICROWAVES drying oven, control dried particle and be less than 10%, microwave bulking, drying operation time 25 minutes containing adsorbed water;
5., dried discrete particles is pulverized with high speed overhang roll mill, obtain 1002 kilograms of the powders of granularity d97≤45 μ mm, detection specific area is 245m
2/ g, can be used as the special de-mould dose of finished product of feed or other organic de-mould agent carrier auxiliary agents through packing.
Claims (2)
1. a preparation method for feed and paper grade (stock) Large ratio surface montmorillonite powder, is characterized in that step is as follows:
1., by smectite content >=80%, the montmorillonite lump ore of cation exchange total amount 0.6-1.0mmoL/g is through broken, artificial selection, selection by winnowing, removes proportion and hardness large and be with montmorillonite the quartz and the spectra that dissociate;
2., by the montmorillonite concentrate obtaining and phosphate solution mixing and stirring;
3., by airtight the mixing wet feed of the phosphate-containing dispersant slaking 5-7 days that stores up, make montmorillonite fully react, expand with phosphate anion, phosphate be sodium pyrophosphate, calgon, sodium phosphate trimer any one, phosphate consumption is the 0.3%-0.6% of montmorillonite concentrate amount, is made into the aqueous solution that mass concentration is 0.30%-1.5% when use;
4., by micro-wave oven expanded, dry processing fast for the montmorillonite wet feed of slaking, in the time that wet montmorillonite expansion material contains adsorbed water 30%, processing time is 20 minutes, in the time that wet montmorillonite expansion material contains adsorbed water 40%, processing time is 23 minutes, in the time that wet montmorillonite expansion material contains adsorbed water 50%, the processing time is 25 minutes;
5., dried discrete particles is pulverized with high speed overhang roll mill, powder obtains the finished product of different specific areas through check.
2. the preparation method of a kind of feed according to claim 1 and paper grade (stock) Large ratio surface montmorillonite powder, is characterized in that step 2., 3. the wet montmorillonite after slaking expands material containing adsorbed water 30%-50%.
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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 |
| CN104543339A (en) * | 2015-01-26 | 2015-04-29 | 中国农业大学 | Microwave conditioning production process of 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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