CN105056889A - Preparation method for bentonite drying agent - Google Patents
Preparation method for bentonite drying agent Download PDFInfo
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Abstract
The invention belongs to the technical field of drying agents, and relates to a preparation method for a bentonite drying agent. The method comprises the steps that 1, bamboo charcoal, sodium chloride, bentonite and quartz sand are mixed, water is added, and the mixture is stirred evenly; 2, hollow microparticles are added in the mixture obtained in the step 1 and mixed with the mixture evenly; 3, fibers and iron powder are added in the mixture obtained in the step 2 after being stirred evenly, the fibers and the iron powder are mixed with the mixture evenly, and then the deoxidized drying agent is obtained. The preparation method is simple in technology, low in requirements for equipment and suitable for large-scale industrial production; the obtained drying agent has both the deoxidizing function and the drying function and is high in cation exchange capacity, significant in deoxidizing and drying effects and high in repeated utilization rate.
Description
Technical field
The invention belongs to drier technical field, relate to a kind of preparation method of bentonite drier.
Background technology
Drier is a kind of deicer absorbing moisture from air, is, by physics mode, Water Molecular Adsorption is absorbed hydrone change its chemical constitution in the structure of self or by chemical mode, becomes another material.It is applicable to prevent instrument, instrument, electric equipment, medicine, food, textile and other various connection with wrapping of piece from making moist.
What the use of current market was more is exactly silica-gel desiccant, as the patent No. a kind of silica-gel desiccant disclosed in the patent of invention of CN104174373A, silica gel is selected: 50-70% according to weight percent, alundum (Al2O3): 12-15%, di-iron trioxide: 8-10%, calcium chloride: 5-8%, magnesium sulfate: 3-6%, carboxymethyl cellulose: 8-15%, essence: 0.7-1.0%, the silica gel will chosen again, alundum (Al2O3), di-iron trioxide, calcium chloride, magnesium sulfate, carboxymethyl cellulose, after essence mixes, pellet is pressed into extruder, and send into dryer, dry in 120-130 DEG C of drying environment and get product.Advantage of the present invention is: adsorption rate is fast, adsorption capacity is large, can also provide the air of delicate fragrance, promote air quality further.Silica-gel desiccant normally uses sodium metasilicate and sulfuric acid reaction, and obtains through a series of processing procedures such as aging, sour bubbles, and raw materials for production are dangerous material, process more complicated.
Also have number acid, alkaline drier, general water absorbing capacity is larger, and rate of drying also than comparatively fast, but can not regenerate use mostly.
Molecular sieve desiccant is also a kind of, be Prof. Du Yucang and hydrone had to the desiccant product of stronger adsorptivity, belong to crystalline aluminosilicate compound, regular and uniform duct is had in its crystal structure, aperture is the order of magnitude of molecular size, but its preparation process more complicated, result of use is also restricted.
At present, using more is that bentonite drier adsorption rate is fast, high adsorption capacity, the water being equivalent to own vol 8-20 times can be adsorbed and be expanded to 30 times, more have stronger cation exchange capacity (CEC) and adsorption capacity, nontoxic, tasteless, contactless property burn into is pollution-free, especially to human body fanout free region.As the patent No. a kind of long-acting removal moisture drying agent disclosed in the Chinese patent of CN104258695, product absorption property under room temperature and general humidity is good, there is the effects such as adsorption activity, static dehumidification and peculiar smell removal, be widely used in, in the dry industry of each needs, there are the potentiality of very large competition in the international market.But these bentonite drier function singlenesses, only have desiccation, and it are low to recycle rate at present, after recycling, drying effect is poor, and adsorption effect need to improve.
Summary of the invention
The object of this invention is to provide a kind of preparation method of bentonite drier, technique is simple, low for equipment requirements, is applicable to large-scale industrial production; The drier obtained has deoxidation and functions/drying concurrently, and cation exchange capacity (CEC) is strong, and deoxidation obvious drying effect, recycles rate high.
The present invention in order to achieve the above object, adopts following technical scheme: a kind of preparation method of bentonite drier, comprising: (1), by bamboo charcoal, sodium chloride, bentonite, quartz sand mixing, adds water, stirs; (2) in the mixture of step (1) gained, hollow minute particle is added, mixing; (3) by fiber and iron powder, after stirring, join in the mixture of step (2) gained, mixing, obtains deoxidation drying agent.
Further preferably, step (3) is carried out under vacuum.
As preferably, described bentonite obtains through following steps: after (I) dries bentonite material under 70-90 DEG C of condition, is crushed to 300-500 order, obtains raw meal; (II): raw meal is joined in sodium salt solution, process 2-5 hour, filters, obtains treatment fluid; The weight ratio of raw meal and sodium salt solution is 1:1-3; Zeolite is added in (III) treatment fluid, in mixing plant, stir process 1-3 hour, mixing speed is 200-300 rev/min; The treatment fluid that (IV) step (III) obtains obtains stand-by bentonite after concentrated, drying.
Occurring in nature, mainly based on calcium-base bentonite, after being dispersed in water, though individual particle has slight expansion, still keep coherent condition between crystal grain, adsorption effect is poor, utilize sodium salt to carry out pre-treatment to it, bentonitic crystal layer can be opened further, its adsorptivity can be significantly improved.Moreover, the heavy metal that zeolite can exist in adsorption treatment liquid, especially heavy metal lead, can also decolour to treatment fluid, with above-mentioned rotating speed stir process 1-3 hour, fully heavy metal contaminants is fallen in absorption, ensures the security of product, improves the whiteness of product, be particularly used in the deoxidation drying agent in food, this process is even more important.
As preferably, described sodium salt is the mixture of one or more in sodium carbonate or sodium acid carbonate or sodium pyrophosphate, and the concentration of sodium salt is 50-80%.
As preferably, described sodium salt is the mixture of sodium carbonate and sodium pyrophosphate, and mass mixing ratio is 3-5:1.
As preferably, the interpolation percentage of used feed components is: iron powder 50-65%, bamboo charcoal 1-8%, sodium chloride 1-8%, bentonite 1-5%, quartz sand 10-30%, water 10-25%.
The component of the selected the best of this technical scheme, on the basis of functions/drying, increase deoxygenation function, be effective with minimum component, cost is low, and processing is simple.Iron powder has the effect of deoxidation, but simple iron powder be just easy in the external world oxidized fall, as the weak effect of deoxidier, process together with bamboo charcoal, sodium chloride, bentonite etc., can iron powder be played a protective role, maintain the effect of deoxidation.
Bamboo charcoal, sodium chloride, bentonite all have adsorption function, and three mixes, more remarkable than the adsorption effect being used alone thrin, and adsorption capacity can reach and be used alone bentonitic at least 3 times; Sodium chloride not only increases adsorption dry efficiency, and together with quartz sand, contributes to the dispersion of each component in mixture, especially after employing a period of time, avoids the agglomerating of drier, ensures the reusable deoxidation drying effect of deoxidation drying agent.
As preferably, deoxidation drying agent also comprises hollow beads that weight ratio is 1-10% and weight ratio is the fiber of 5-10%.
In this technical scheme, fiber provides one to adhere to medium for mixture, after adsorbing the materials such as a large amount of water, can not change original steric configuration, thus can not affect the deoxidation functions/drying of itself at deoxidation drying agent; Hollow beads plays the effect of loosen collagen fibre, the effect of further reinforcing fibre.
As preferably, the diameter of described fiber is 5-15 μm, and the length of described fiber is 0.1-1mm.
As preferably, described fiber is the mixture of bamboo fibre and viscose rayon, and the mass mixing ratio of described bamboo fibre and described viscose rayon is 1-3:1.
Bamboo fibre and viscose rayon all have good hygroscopicity, and good with bentonitic tack, especially viscose rayon, and bentonite etc. adhere to evenly thereon, and adhesive force is good, thus deoxidation drying agent is reproducible.
By above-mentioned enforcement such scheme, preparation method's technique provided by the present invention is simple, low for equipment requirements, is applicable to large-scale industrial production; The drier obtained has deoxidation and functions/drying concurrently, and cation exchange capacity (CEC) is strong, and deoxidation obvious drying effect, recycles rate high.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1:
A kind of bentonite drier, comprises the component of following weight percents: iron powder 60%, bamboo charcoal 2%, sodium chloride 2%, bentonite 1%, quartz sand 20%, water 15%.
The preparation method of above-mentioned bentonite drier, comprising: (1) weighs up each component by weight percentage, by bamboo charcoal, sodium chloride, bentonite, quartz sand mixing, adds water, stirs; (2) in the mixture of step (1) gained, add iron powder, after stirring, obtain deoxidation drying agent.
Embodiment 2:
A kind of bentonite drier, comprises the component of following weight percents: iron powder 50%, bamboo charcoal 8%, sodium chloride 2%, bentonite 5%, quartz sand 10%, water 25%.
The preparation method of above-mentioned bentonite drier, comprising: (1) weighs up each component by weight percentage, by bamboo charcoal, sodium chloride, bentonite, quartz sand mixing, adds water, stirs; (2) in the mixture of step (1) gained, add iron powder, after stirring, obtain deoxidation drying agent.
Wherein, bentonite obtains through following steps: after (I) dries bentonite material under 90 DEG C of conditions, is crushed to 300 orders, obtains raw meal; (II): raw meal being joined concentration is in the sodium salt solution of 50%, processes 5 hours, filters, obtains treatment fluid; Sodium salt is sodium pyrophosphate; The weight ratio of raw meal and sodium salt solution is 1:2; Zeolite is added in (III) treatment fluid, in mixing plant, stir process 2 hours, mixing speed is 200 revs/min; The treatment fluid that (IV) step (III) obtains obtains stand-by bentonite after concentrated, drying.
Embodiment 3:
A kind of bentonite drier, comprises the component of following weight percents: iron powder 65%, bamboo charcoal 3%, sodium chloride 1%, bentonite 5%, quartz sand 10%, water 10%, hollow beads 1%, polyester fiber 5%.
The preparation method of above-mentioned bentonite drier, comprising: (1), by bamboo charcoal, sodium chloride, bentonite, quartz sand mixing, adds water, stirs; (2) in the mixture of step (1) gained, hollow minute particle is added, mixing; (3) mixed under vacuum with iron powder by fiber, after stirring, join in the mixture of step (2) gained, mixing, obtains deoxidation drying agent.
Wherein, bentonite obtains through following steps: after (I) dries bentonite material under 90 DEG C of conditions, is crushed to 300 orders, obtains raw meal; (II): raw meal being joined concentration is in the sodium salt solution of 50%, processes 5 hours, filters, obtains treatment fluid; Sodium salt is the mixture of sodium carbonate and sodium pyrophosphate, and mass mixing ratio is 5:1; The weight ratio of raw meal and sodium salt solution is 1:2; Zeolite is added in (III) treatment fluid, in mixing plant, stir process 2 hours, mixing speed is 200 revs/min; The treatment fluid that (IV) step (III) obtains obtains stand-by bentonite after concentrated, drying.
Embodiment 4:
A kind of bentonite drier, comprises the component of following weight percents: iron powder 55%, bamboo charcoal 1%, sodium chloride 5%, bentonite 1%, quartz sand 10%, water 15%, hollow beads 3%, fiber 10%; Wherein fiber is the mixture of bamboo fibre and viscose rayon, and mass mixing ratio is 3:1.
The preparation method of above-mentioned bentonite drier, comprising: (1), by bamboo charcoal, sodium chloride, bentonite, quartz sand mixing, adds water, stirs; (2) in the mixture of step (1) gained, hollow minute particle is added, mixing; (3) mixed under vacuum with iron powder by fiber, after stirring, join in the mixture of step (2) gained, mixing, obtains deoxidation drying agent.
Wherein, bentonite obtains through following steps: after (I) dries bentonite material under 70 DEG C of conditions, is crushed to 400 orders, obtains raw meal; (II): raw meal being joined concentration is in the sodium salt solution of 80%, processes 2 hours, filters, obtains treatment fluid; Sodium salt is the mixture of sodium carbonate and sodium pyrophosphate, and mass mixing ratio is 3:1; The weight ratio of raw meal and sodium salt solution is 1:2; Zeolite is added in (III) treatment fluid, in mixing plant, stir process 2 hours, mixing speed is 250 revs/min; The treatment fluid that (IV) step (III) obtains obtains stand-by bentonite after concentrated, drying.
Embodiment 5:
A kind of bentonite drier, comprises the component of following weight percents: iron powder 50%, bamboo charcoal 8%, sodium chloride 3%, bentonite 2%, quartz sand 15%, water 15%, hollow beads 1%, fiber 6%; Wherein fiber is the mixture of bamboo fibre and viscose rayon, and mass mixing ratio is 2:1.
The preparation method of above-mentioned bentonite drier, comprising: (1), by bamboo charcoal, sodium chloride, bentonite, quartz sand mixing, adds water, stirs; (2) in the mixture of step (1) gained, hollow minute particle is added, mixing; (3) mixed under vacuum with iron powder by fiber, after stirring, join in the mixture of step (2) gained, mixing, obtains deoxidation drying agent.
Wherein, bentonite obtains through following steps: after (I) dries bentonite material under 80 DEG C of conditions, is crushed to 500 orders, obtains raw meal; (II): raw meal being joined concentration is in the sodium salt solution of 60%, processes 4 hours, filters, obtains treatment fluid; Sodium salt is sodium carbonate; The weight ratio of raw meal and sodium salt solution is 1:3; Zeolite is added in (III) treatment fluid, in mixing plant, stir process 3 hours, mixing speed is 200 revs/min; The treatment fluid that (IV) step (III) obtains obtains stand-by bentonite after concentrated, drying.
Embodiment 6:
A kind of bentonite drier, comprises the component of following weight percents: iron powder 50%, bamboo charcoal 2%, sodium chloride 1%, bentonite 1%, quartz sand 30%, water 10%, hollow beads 1%, fiber 5%; Wherein fiber is the mixture of bamboo fibre and viscose rayon, and mass mixing ratio is 1:1.
The preparation method of above-mentioned bentonite drier, comprising: (1), by bamboo charcoal, sodium chloride, bentonite, quartz sand mixing, adds water, stirs; (2) in the mixture of step (1) gained, hollow minute particle is added, mixing; (3) mixed under vacuum with iron powder by fiber, after stirring, join in the mixture of step (2) gained, mixing, obtains deoxidation drying agent.
Wherein, bentonite obtains through following steps: after (I) dries bentonite material under 75 DEG C of conditions, is crushed to 350 orders, obtains raw meal; (II): raw meal being joined concentration is in the sodium salt solution of 70%, processes 3 hours, filters, obtains treatment fluid; Sodium salt be sodium acid carbonate and mixture, mass mixing ratio is 3.5:1; The weight ratio of raw meal and sodium salt solution is 1:1; Zeolite is added in (III) treatment fluid, in mixing plant, stir process 1 hour, mixing speed is 300 revs/min; The treatment fluid that (IV) step (III) obtains obtains stand-by bentonite after concentrated, drying.
Claims (9)
1. a preparation method for bentonite drier, is characterized in that: comprising: (1), by bamboo charcoal, sodium chloride, bentonite, quartz sand mixing, adds water, stirs; (2) in the mixture of step (1) gained, hollow minute particle is added, mixing; (3) by fiber and iron powder, after stirring, join in the mixture of step (2) gained, mixing, obtains deoxidation drying agent.
2. the preparation method of a kind of bentonite drier according to claim 1, is characterized in that: step (3) is carried out under vacuum.
3. the preparation method of a kind of bentonite drier according to claim 1, is characterized in that: described bentonite obtains through following steps: after (I) dries bentonite material under 70-90 DEG C of condition, is crushed to 300-500 order, obtains raw meal; (II): raw meal is joined in sodium salt solution, process 2-5 hour, filters, obtains treatment fluid; The weight ratio of raw meal and sodium salt solution is 1:1-3; Zeolite is added in (III) treatment fluid, in mixing plant, stir process 1-3 hour, mixing speed is 200-300 rev/min; The treatment fluid that (IV) step (III) obtains obtains stand-by bentonite after concentrated, drying.
4. the preparation method of a kind of bentonite drier according to claim 3, is characterized in that: described sodium salt is the mixture of one or more in sodium carbonate or sodium acid carbonate or sodium pyrophosphate, and the concentration of sodium salt is 50-80%.
5. the preparation method of a kind of bentonite drier according to claim 1, is characterized in that: the percentage by weight that described iron powder, bamboo charcoal, sodium chloride, bentonite, quartz sand, water add is as follows: iron powder 50-65%, bamboo charcoal 1-8%, sodium chloride 1-8%, bentonite 1-5%, quartz sand 10-30%, water 10-25%.
6. the preparation method of a kind of bentonite drier according to claim 5, is characterized in that: also comprise hollow beads that weight ratio is 1-10% and weight ratio is the fiber of 5-10%.
7. the preparation method of a kind of bentonite drier according to claim 6, it is characterized in that: the diameter of described fiber is 5-15 μm, the length of described fiber is 0.1-1mm.
8. a kind of preparation method of bentonite drier according to claim 5 or 6, it is characterized in that: described fiber is the mixture of bamboo fibre and viscose rayon, the mass mixing ratio of described bamboo fibre and described viscose rayon is 1-3:1.
9. the preparation method of a kind of bentonite drier according to claim 8, it is characterized in that: described sodium salt is the mixture of sodium carbonate and sodium pyrophosphate, mass mixing ratio is 3-5:1.
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| CN105995383A (en) * | 2016-06-16 | 2016-10-12 | 常熟市屹浩食品包装材料科技有限公司 | Rapid deoxidizer for foods and preparation method of deoxidizer |
| CN106914110A (en) * | 2017-04-11 | 2017-07-04 | 安徽博硕科技有限公司 | A kind of degerming drier and preparation method thereof |
| CN107876030A (en) * | 2017-11-21 | 2018-04-06 | 常州市鼎升环保科技有限公司 | A kind of preparation method of bentonite drier |
| CN108714410A (en) * | 2018-04-18 | 2018-10-30 | 句容康泰膨润土有限公司 | A kind of bentonite drier and preparation method thereof |
| CN108745312A (en) * | 2018-06-13 | 2018-11-06 | 合肥云都棉花有限公司 | A kind of cotton storage drier and preparation method thereof |
| CN108786714A (en) * | 2018-04-18 | 2018-11-13 | 句容康泰膨润土有限公司 | A kind of bentonite drier and preparation method thereof |
| CN109331619A (en) * | 2018-09-04 | 2019-02-15 | 江苏兆佳建材科技有限公司 | A kind of bentonite efficient drying agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108745312A (en) * | 2018-06-13 | 2018-11-06 | 合肥云都棉花有限公司 | A kind of cotton storage drier and preparation method thereof |
| CN109331619A (en) * | 2018-09-04 | 2019-02-15 | 江苏兆佳建材科技有限公司 | A kind of bentonite efficient drying agent |
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Effective date of registration: 20191216 Address after: No. 4, Zhenxing North Road, Tianhe Town, Gaogang District, Taizhou City, Jiangsu Province Patentee after: Yan Shiliang Address before: 313000, Zhejiang, Huzhou province Anji County filial piety Fengzhen Li village grass Factory Group Anji Li desiccant Co., Ltd. Patentee before: ANJI QUNLI DRYING AGENT CO., LTD. |
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Effective date of registration: 20200428 Address after: 212300 three groups of Dan Beizhen new bridge village, Danyang, Zhenjiang, Jiangsu Patentee after: DANYANG KORE PRECISION ELECTRONIC Co.,Ltd. Address before: No. 4, Zhenxing North Road, Tianhe Town, Gaogang District, Taizhou City, Jiangsu Province Patentee before: Yan Shiliang |