CN103506068B - A kind of preparation method of Novel mineral silicon dioxide flake desiccant and relevant drier - Google Patents
A kind of preparation method of Novel mineral silicon dioxide flake desiccant and relevant drier Download PDFInfo
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- CN103506068B CN103506068B CN201310430421.3A CN201310430421A CN103506068B CN 103506068 B CN103506068 B CN 103506068B CN 201310430421 A CN201310430421 A CN 201310430421A CN 103506068 B CN103506068 B CN 103506068B
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Abstract
The present invention relates to a kind of preparation method of Novel mineral silicon dioxide flake desiccant, and Novel mineral silicon dioxide flake desiccant obtained by this method.Said method comprising the steps of: 1) granulation is carried out to mineral silica drier powder water; 2) particle that obtains of drying; 3) to dried pellet through sieves; 4) by compressing for the particle after sieving; 5) dry compressing particle, obtained Novel mineral silicon dioxide flake desiccant.The inventive method adopts mineral silica powder to be raw material, on Mechanical pressing forming machine, and the mould of available different size specification, the product of compacting different-thickness specification; Obtained Novel mineral silicon dioxide flake desiccant, compared with prior art, in same volume situation, total hygroscopic capacity is higher, and moisture pick-up properties is stablized; Can be consistent with usage space size, safety and environmental protection; Can automated production be realized, there is huge application prospect and economic worth.
Description
Technical field
The present invention relates to chemical material field, particularly, relate to a kind of preparation method of Novel mineral silicon dioxide flake desiccant, and Novel mineral silicon dioxide flake desiccant obtained by this method.
Background technology
Along with widely using of drier, require that drier volume is less, and conjunction can better be carved mutually with packing container; More require that drier is in use safe and reliable, moisture pick-up properties is stablized, and can be reproduced, Reusability.
What generally adopt in recent years is the drier such as packed silica gel, its major defect is: the drier such as silica gel must be packed again through gas permeability material non-woven fabrics or paper etc., can not directly and the packing of product of placing drier be needed to fit tightly, and the situation that packed silica-gel desiccant drops and break can be produced, there is the possibility causing secondary pollution product; And conventional pouch silica-gel desiccant put procedure can only manually be placed, continuous and automatic can not be realized and throw in, thus limit its Automation Industry process.
Patent application CN02137547.X discloses a kind of production method manufacturing ball-type montmorillonite active drying agent, described production method is the stirring that is first hydrolyzed in cartridge type knockout drum by ca-montmorillonite ore, make its layering that suspends, then the floating upper and impurity of upper strata lightweight is bled off, extract the ca-montmorillonite powder in intermediate layer, finally bleed off gravel and the Silica grain of deposition, the ca-montmorillonite powder slurry extracted in intermediate layer dries, dries.The ca-montmorillonite powder of ball-type montmorillonite active drying agent is after pulverizing, then na-montmorillonite powder is selected to adopt above-mentioned same step to carry out manufacturing the na-montmorillonite powder of ball-type montmorillonite active drying agent, finally ca-montmorillonite powder and na-montmorillonite powder are mixed, mix thoroughly, then carry out granulation, obtain described ball-type montmorillonite active drying agent.The shortcoming that this technology exists is: complicated process of preparation.
Patent application CN201210343451.6 discloses a kind of air drying agent.With parts by weight, composed of the following components: silica gel: 10 ~ 20, calcium chloride: 5 ~ 8, talcum powder: 20 ~ 30, starch: 10 ~ 20, magnesium sulfate: 3 ~ 6, calcium sulfate: 4 ~ 8, bentonite: 20 ~ 30, essence: 0.3 ~ 0.6.The shortcoming that disclosed content exists is: only simply mixed by material, component is more, and cost is larger; Do not disclose concrete experimental data, empirical tests, its moisture pick-up properties is also bad, and hydroscopicity and hygroscopic capacity are all lower.
Further, the shortcoming that above-mentioned technology contents also all exists is: its drier must carry out packing again with Breathable nonwoven or paper, just can be used in various moistureproof field; And space injected volume is few, gross absorption will certainly be lower.
Summary of the invention
In order to solve problems of the prior art, an object of the present invention is, provides a kind of preparation method of Novel mineral silicon dioxide flake desiccant.
Another object of the present invention is to, the Novel mineral silicon dioxide flake desiccant that a kind of described method is obtained is provided.
The preparation method of Novel mineral silicon dioxide flake desiccant provided by the invention, comprises the following steps:
1) granulation is carried out to mineral silica drier powder water;
2) particle that obtains of drying;
3) dried particle is sieved;
4) by compressing for the particle after sieving;
5) dry compressing particle, obtained Novel mineral silicon dioxide flake desiccant.
Wherein, in step 1), described mineral silica drier powder is: the mixture of mineral and silica, and wherein both weight ratios are (1 ~ 3): (1 ~ 3).
Preferably, in mineral silica drier powder, the weight ratio of mineral and silica is (7 ~ 10): (10 ~ 13).
Wherein, described mineral are natural minerals, i.e. the mineral of natural degradable; Preferably, described mineral are selected from: one or more in montmorillonite, bentonite and attapulgite clay.
Wherein, described silica is selected from: one or both in pore (A type) and gross porosity (Type B) silica gel, and its wettability power is higher.
Wherein, in step 1), described water for purifying waste water, pure water or purified water.
Wherein, in step 1), the weight ratio of described mineral silica drier powder and water is: (2 ~ 8): (1:5), preferred 5:2.
Wherein, in step 3), below 1mm is crossed to dried particle and sieves.
Wherein, the drying mode in preparation method is oven drying.
The preparation method of Novel mineral silicon dioxide flake desiccant provided by the invention, further, comprises the following steps:
1) granulation: by mineral silica drier powder in granulation pot, evenly slowly sprays into and purifies waste water, carry out granulation;
2) dry: by the particle that obtains through oven drying;
3) sieve: dried particle is sieved through wobbler;
4) compressing: by the particle after sieving on Mechanical pressing forming machine, compressing with the mould of corresponding size;
5) product activation: by compressing particle, drying obtains Novel mineral silicon dioxide flake desiccant.
The Novel mineral silicon dioxide flake desiccant obtained by the inventive method, can be widely used in various medicine, health products, medicine equipment, electronic material, the drier applications such as accurate mechanical equipment.
The sheet drier that the present invention is made up of mineral silica drier powder, it is the one of moisture protected dry drying prescription, adopt mineral silica powder, compressing by a certain size sized mold in compression machinery, obtain the sheet desiccant product with various fixed profile and sufficient mechanical strength.
By the invention provides the obtained Novel mineral silicon dioxide flake desiccant of method, its main feature is:
One, profile can be consistent with the space of placing drier, and be closely linked with the packing of product, and save the useful space greatly, space injected volume is large, and can realize continuous and automatic input and operation;
Two, renewable after using and be reused;
Three, packed can directly use need not be carried out;
Four, adopt raw material all harmless, safe and reliable, environmentally safe, odorless, tasteless, non-corrosiveness.
Five, preparation is simple, and cost is low.
In a word, the inventive method adopts mineral silica powder to be raw material, on Mechanical pressing forming machine, and the mould of available different size specification, the product of compacting different-thickness specification; Obtained Novel mineral silicon dioxide flake desiccant, compared with prior art (as conventional pouch silica-gel desiccant), in same volume situation, total hygroscopic capacity is higher, and moisture pick-up properties is stablized; Can be consistent with usage space size, safety and environmental protection; Can automated production be realized, there is huge application prospect and economic worth.
Detailed description of the invention
Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Unit of the present invention " part " can refer to: jin, kilogram, gram, kilogram, ton ... etc. unit of weight, determine according to practical condition.
The routine that the NM operation of the present invention and technological parameter are this area is selected, the conventional material of material used also for can commercially obtain.
Embodiment 1: the preparation of mineral silica powder
The first step: natural minerals is purified
First purifying waste water of montmorillonite ore deposit soil 5 parts of use 80 parts is stirred fully immersion more than 50 hours, treat that it fully expands, sieve more than 200 orders, isolate bulky grain thing impurity ore deposit soil.
Second step: parcel
The mineral of above-mentioned purification and pore (A type) silicon dioxide powder (particle diameter is more than 400 orders) 8 parts are dropped into machine for cutting charge into pieces, grind more than 60 hours, by mixed material supercentrifuge centrifugal (rotating speed is more than 2000 revs/min), removing particle, obtained parcel liquid.
3rd step: dry
Obtained parcel liquid is concentrated, and vacuum drying, obtain mineral silica drier powder.
Embodiment 2: the preparation of mineral silica powder
The first step: natural minerals is purified
First 2 parts, montmorillonite ore deposit soil and purifying waste water of attapulgite clay 3 parts of use 100 parts are stirred fully immersion more than 50 hours, treat that it fully expands, sieve more than 200 orders, isolate bulky grain thing impurity ore deposit soil.
Second step: parcel
By the mineral of above-mentioned purification and pore (A type) silica white (particle diameter is: particle diameter is more than 400 orders) 3 parts, gross porosity (Type B) silica white 2 parts drops into machine for cutting charge into pieces together, grind more than 60 hours, by mixed material supercentrifuge centrifugal (rotating speed is more than 2000 revs/min), removing particle, obtained parcel liquid.
3rd step: dry
Obtained parcel liquid is concentrated, and drying box is dry, obtained mineral silica drier powder.
Embodiment 3: the preparation of mineral silica flaky dessicant
The first step: granulation
The natural minerals silicon dioxide powder first embodiment 1 prepared 5 parts, evenly sprays into about 2 parts lentamente and purifies waste water, carry out granulation in granulation pot.
Second step: dry
The particle upper step obtained carries out suitable drying in baking oven.
3rd step: sieve
The particle of upper step being dried sieves in the wobbler being provided with 1mm screen cloth.
4th step: compressing
Particle after upper step being sieved, on Mechanical pressing forming machine, makes type at corresponding size, applicable mould inner pressure.
5th step: activation
By particle compressing for upper step, drying obtains Novel mineral silicon dioxide flake desiccant.
Embodiment 4
Other conditions are with embodiment 3, and difference is: the weight ratio of mineral silica drier powder and water is 4:5.
Experimental example
Mineral silica flaky dessicant obtained by the method for the present invention (product prepared by embodiment 3), compared with the drier that existing market is sold (packed silica-gel desiccant), performance data is compared as follows (adopting the conventional method of this area to carry out performance test):
As can be seen from the above table: Novel mineral silicon dioxide flake desiccant of the present invention, more can be consistent with the space of placing drier compared with existing packed silica-gel desiccant; Further, the amount of placing drier in space improves very large, and total hygroscopic capacity has great raising.
Other embodiments and embodiment 3 effect similar, but be excellent with embodiment 3.
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.
Claims (1)
1. a preparation method for mineral silica flaky dessicant, comprises the following steps:
The first step: purifying waste water of montmorillonite ore deposit soil 5 parts of use 80 parts is stirred fully immersion more than 50 hours, treats that it fully expands, sieve more than 200 orders, isolate bulky grain thing impurity ore deposit soil;
Mixed material is that the supercentrifuge of more than 2000 revs/min is centrifugal at rotating speed by second step: the silicon dioxide powder 8 parts being more than 400 orders by the mineral of purification and pore A type particle diameter drops into machine for cutting charge into pieces, grinds more than 60 hours, removing particle, obtained parcel liquid;
3rd step: concentrated by obtained parcel liquid, and vacuum drying, obtain mineral silica drier powder;
4th step: by the natural minerals silicon dioxide powder 5 parts prepared, evenly sprays into 2 parts lentamente and purifies waste water, carry out granulation in granulation pot;
5th step: the particle that the 4th step obtains is carried out drying in baking oven;
6th step: the particle that the 5th step is dried is sieved in the wobbler being provided with 1mm screen cloth;
7th step: the particle after the 6th step being sieved, on Mechanical pressing forming machine, makes type at mould inner pressure;
8th step: by particle compressing for the 7th step, drying obtains the mineral silica flaky dessicant of activation.
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| CN103816774B (en) * | 2014-02-26 | 2015-10-21 | 昆山威胜干燥剂研发中心有限公司 | A kind of drier preventing automobile lamp from coagulating mist and the breather valve containing drier |
| CN107138027A (en) * | 2017-05-31 | 2017-09-08 | 成都协恒科技有限公司 | A kind of drying agent for containers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755183A (en) * | 1970-07-24 | 1973-08-28 | Sued Chemie Ag | Method of preparing silicate adsorbents and drying agents and product thereof |
| CN101376095A (en) * | 2007-08-28 | 2009-03-04 | 戴新华 | Silicon oxide drier and method for producing the same |
| CN102989412A (en) * | 2011-09-09 | 2013-03-27 | 刘维 | High-efficiency dehumidifying agent |
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- 2013-09-18 CN CN201310430421.3A patent/CN103506068B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755183A (en) * | 1970-07-24 | 1973-08-28 | Sued Chemie Ag | Method of preparing silicate adsorbents and drying agents and product thereof |
| CN101376095A (en) * | 2007-08-28 | 2009-03-04 | 戴新华 | Silicon oxide drier and method for producing the same |
| CN102989412A (en) * | 2011-09-09 | 2013-03-27 | 刘维 | High-efficiency dehumidifying agent |
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