CN101780288A - Composite air purificant containing nanometer mineral matters and preparation method thereof - Google Patents
Composite air purificant containing nanometer mineral matters and preparation method thereof Download PDFInfo
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Abstract
The invention provides a composite air purificant containing nanometer mineral matters, which contains 47wt% to 78wt% of attapulgite as a natural mineral, 20wt% to 50wt% of synthetic zeolite molecular sieve as a molecular sieve, 0.5wt% to 5wt% of sodium carbonate or sodium chloride or sodium fluoride or sodium hydrogensulfite as a modifier, 0.5wt% to 5wt% of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate as a foaming agent, 0.5wt% to 2wt% of dodecyldimethylbenzylammonium chloride as a surface active agent, 0.2wt% to 2wt% of nanometer photocatalyst titanium dioxide colloidal solution as a photocatalyst and 0.1wt% to 1wt% of nanometer aircatalyst titanium dioxide colloidal solution as photochemical catalysts. The composite air purificant is prepared by first drying, first pelleting, second drying, second pelleting, third drying, baking and finish product detection and package. The invention has high alternative adsorbability and high decomposition efficiency for organic pollutants in the air.
Description
Technical field
The invention belongs to the air purifying process field, be specifically related to select for use natural minerals and photocatalyst material and adopt the production of semidry method modified active to contain composite air purifying agent of nanometer mineral matters and preparation method thereof.
Background technology
According to the report that World Health Organization (WHO) provides, the current whole world because of municipal pollution year too early death toll surpassed 750,000, wherein Asian countries and area have 530,000.And countless especially because of the morbific number of air pollution, China's urban air pollution problem is still outstanding at present, and 44.9% urban environment air is lower than national grade ii standard, wherein has 43 urban environment air qualities to be lower than national grade III Standard.According to another expert introduction, in the building of the newly-built and reconstruction in the world 30%, exist insalubrious room air, room air pollution has become one of five kinds of maximum environmental factorss of public health harm.Therefore administer room air pollution and also become one of major issue that the public pays close attention to most.
Adopting adsorbing material that the indoor pollution air is purified is one of most widely used method.In recent years, some natural minerals are as novel adsorbing material, have aboundresources, cheap, adsorptivity is strong, characteristics such as product is environmentally friendly, be subjected to widely paying close attention to, had higher adsorption cleaning disposal ability as attapulgite, need to natural minerals purify, deep processing transformation such as modification, perhaps carry out the compound of multiple natural minerals, this has become the emphasis of environment mineral material research.A kind of superfine compound active adsorbing absorbent-type indoor air purification agent is disclosed as Chinese document [patent No.: 200310112788.7] " superfine compound active adsorbing absorbent-type indoor air purification agent ", to press suitable proportioning mixing through attapulgite clay after activation processing and the super-fine processing and zeolite, make up pelletize and oven dry, mix according to a certain percentage with granular active carbon again, promptly obtain " superfine compound active adsorbing absorbent-type indoor air purification agent "; Document [Zhai Bin, the environment mineral material application in pollution control, northern environment, 2005,30 (2): 69-72] is pointed out: zeolite is after the NaCl modification, and is better to the adsorption effect of ammonia nitrogen.
Photocatalysis technology is that to utilize ultraviolet light irradiation be the photocatalyst material of representative with TiO2, forms the hydroxyl radical free radical with extremely strong oxidability, the airborne organic pollution of degrading.In recent years, one of direction of its development is to make it can directly utilize visible light such as sunlight to excite by modification, produces detergent power.Patent application as Chinese patent literature [publication number: CN1583252A] discloses a kind of " preparation method of visible-light response type photocatalyst of titanium dioxide indoor air purification agent ", to its modification, the titanium dioxide after the modification has photolytic activity under indoor light under the active condition of abundant assurance optically catalytic TiO 2.
It is hot research in recent years that adsorbing material and photocatalyst material are carried out its air cleaning ability of compound raising, discloses " a kind of titanium dioxide/active carbon fiber photocatalyst and preparation method thereof and the application in air cleaning " as the patent application of Chinese patent literature [publication number: CN1803291A]; The patent application of Chinese patent literature [publication number: CN101121124A] discloses a kind of synthetic method of attapulgite composite photocatalyst, with the positive fourth fat of metatitanic acid is raw material, prepare colloidal sol by its hydrolysis, obtain attapulgite composite material through steps such as ageing, calcinings again; The patent application of Chinese patent literature [publication number: CN101117780A] discloses a kind of preparation method that is used for the modified attapulgite powder of papermaking filler, and used raw material is inorganic titanium salt; The patent application of Chinese patent literature [publication number: CN101333345A] discloses a kind of preparation method of nano titanium oxide/attapulgite composite material, earlier attapulgite is joined and be mixed with slurry in the deionized water, in the nano titanium oxide precursor, add the attapulgite slurry again, form the blue and white glue that nano titanium oxide/attapulgite clay compounded particle is formed, regulate pH value, filtration washing, filtration cakes torrefaction with alkaline solution at last, be prepared into nano titanium oxide/attapulgite composite material powder body.Some are big as cost height, wastewater flow rate, powder body is used shortcomings such as difficulty but above-mentioned several method all exists, and the air purifying preparation efficient that obtains is low.
Summary of the invention
Technical problem to be solved by this invention is the present situation at prior art, and provide with low cost, technology is simple, and adopt the semidry method modified active to produce composite air purifying agent and preparation method thereof, by selecting for use several to have the pure natural mineral material of absorbability, after purification, modification, activation, primary drying, a pelletize, the glue that adds photocatalyst material carries out preparing composite air purifying agent after secondary granulation, drying, the roasting.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the composite air purifying agent that contains nanometer mineral matters, form by natural minerals, molecular sieve, photocatalyst, modifier, foaming agent and surfactant, it is characterized in that: natural minerals is an attapulgite, the percentage by weight of attapulgite is 47～78%, molecular sieve is artificial zeolite's molecular sieve, and its percentage by weight is 20～50%; Modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, and its percentage by weight is 0.5～5%, and foaming agent is ammonium bicarbonate or sodium bicarbonate or aluminum sulfate, and its percentage by weight is 0.5～5%; Surfactant is a dodecyl dimethyl benzyl ammonium bromide, and its percentage by weight is 0.5～2%; Photocatalyst is nano photo-catalytic colloidal tio 2 solution and nanometer air catalyst colloidal tio 2 solution, and the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 0.2～2%; The percentage by weight of nanometer air catalyst colloidal tio 2 solution is 0.1～1%.
The measure of taking also comprises: in the above-mentioned composite air purifying agent that contains nanometer mineral matters, the percentage by weight of attapulgite is 76%, the percentage by weight of artificial zeolite's molecular sieve is 20%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 0.5%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 0.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 1%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 1%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
In the above-mentioned composite air purifying agent that contains nanometer mineral matters, the percentage by weight of attapulgite is 47%, the percentage by weight of artificial zeolite's molecular sieve is 49%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 0.5%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 0.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 1%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 1%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
In the above-mentioned composite air purifying agent that contains nanometer mineral matters, the percentage by weight of attapulgite is 57%, the percentage by weight of artificial zeolite's molecular sieve is 33%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 2%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 2.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 2.5%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 2%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
The present invention solves the problems of the technologies described above and also comprises preparation method, and technical scheme is: contain the preparation method of the composite air purifying agent of nanometer mineral matters, comprise following concrete steps:
(1) beneficiation steps: select attapulgite natural minerals concentrate for use with absorbability;
(2) purification step: the natural minerals attapulgite of selecting for use is carried out purification processes, and wherein the percentage by weight of attapulgite is 47～78%, and attapulgite is crushed to 325 orders;
(3) modification, activation step: attapulgite clay after purifying soil is added surfactant, carrying out suitable proportioning by weight percentage mixes, surfactant is a dodecyl dimethyl benzyl ammonium bromide, and the percentage by weight that adds surfactant dodecyl dimethyl benzyl ammonium bromide is 0.5～2%; And add modifier, foaming agent, and modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, its consumption accounts for 0.5～5% of total weight percent after the purification proportioning; Foaming agent is ammonium bicarbonate or sodium bicarbonate or aluminum sulfate, and its consumption accounts for 0.5～5% of total weight percent after the purification proportioning; And adopt kneader to carry out the semidry method modification;
(4) primary drying step: the attapulgite behind the modified active is carried out primary drying;
(5) granulation step: add percentage by weight and be 20～50% artificial zeolite's molecular sieve and an amount of water and mix, and employing granulator carries out a pelletize with attapulgite behind the modified active;
(6) redrying step: the mixture after granulation step is carried out redrying;
(7) secondary granulation step: add nano photo-catalytic colloidal tio 2 solution and nanometer air catalyst colloidal tio 2 solution, and adopt granulator to carry out secondary granulation; Nano photo-catalytic colloidal tio 2 solution usage accounts for 0.2～2% of total weight percent after the purification proportioning; Nanometer air catalyst colloidal tio 2 solution usage accounts for 0.1～1% of total weight percent after the purification proportioning;
(8) three drying steps: the mixture after the secondary granulation step is carried out drying three times;
(9) calcination steps: the mixture after three granulation step is carried out calcination activation;
(10) screening and finished product detection packaging step: after screening, finished product detection is packed.
The measure of taking also comprises:
In the preparation method of the above-mentioned composite air purifying agent that contains nanometer mineral matters, step 3 is specially temperature is controlled under 50～80 ℃ and activates reaming; Step 8 is specially temperature is controlled at carries out drying below 60 ℃; Step 9 is specially to adopt flat electric furnace and temperature is controlled at 200～300 ℃ carries out calcination activation.
In the preparation method of the above-mentioned composite air purifying agent that contains nanometer mineral matters, the percentage by weight of attapulgite is 76%, the percentage by weight of artificial zeolite's molecular sieve is 20%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 0.5%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 0.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 1%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 1%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
In the preparation method of the above-mentioned composite air purifying agent that contains nanometer mineral matters, the percentage by weight of attapulgite is 47%, the percentage by weight of artificial zeolite's molecular sieve is 49%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 0.5%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 0.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 1%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 1%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
In the preparation method of the above-mentioned composite air purifying agent that contains nanometer mineral matters, the percentage by weight of attapulgite is 57%, the percentage by weight of artificial zeolite's molecular sieve is 33%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 2%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 2.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 2.5%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 2%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
The present invention is to be base material with the natural minerals, forms with produced with combination such as zeolite molecular sieve, nano photo-catalytic titanium dioxide optical catalyst and nanometer air catalyst titanium dioxide optical catalysts after it being carried out series of optimum activation such as selected, modification again.The natural surroundings mineral of selecting for use are attapulgites, in view of their base attribute and construction features, the natural ability that possesses very strong selective absorption mainly contains organic pollutants formaldehyde, benzene, dimethylbenzene or the like and main chemical pollutant ammonia, hydrogen sulfide, sulfur dioxide, carbon monoxide or the like in the absorbed air.Though but attapulgite and zeolite molecular sieve possess very strong absorbability, but after in a single day absorption reaches capacity, just lose the ability that continues absorption, just need desorption be to recover adsorption function to them in addition, that is to say needs recover adsorption function by regenerating.
Therefore, in order to allow natural environmental mineral not only possess good absorbability, and also possessing simultaneously the function that adsorbate is decomposed, we will possess the nano photo-catalytic photocatalysis material of titanium dioxide of good capacity of decomposition and nanometer air catalyst photocatalysis material of titanium dioxide and attapulgite, zeolite molecular sieve and be made into compound material for air purification.Thereby reach absorption and the once clean purpose of decomposing.Because the material of two difference in functionalitys is combined into one, and this has brought many convenience and frontier just for us on air pollution treatment, wherein be embodied in the making of air cleaner (device), can simplified structure, strengthen abatement functions and reduce production costs.
Compared with prior art, the invention has the advantages that:
1, to airborne organic pollution, improve extremely strong selective adsorption capacity: by absorption base material through modification, activatory attapulgite and zeolite molecular sieve combination, its selective adsorption capacity is much better than adsorbent commonly used such as active carbon, aluminium oxide and silica gel.Attapulgite clay rod stone and zeolite molecular sieve have natural very big specific surface area and flourishing micro channel.Its physics, chemical constitution and ionic condition determine it naturally to have suitable physical absorption and a chemical adsorption capacity.And this characteristic of its selective absorption, mineral clay such as Montmorillonitum is unexistent especially.Its adsorbable polar molecule absorption affinity is followed successively by: water＞alcohol＞aldehyde＞ketone＞positive alkene＞neutral fat＞aromatic hydrocarbons＞cycloalkane＞alkane.Wherein organic and chemical pollutant, as the molecular size scope of benzene, dimethylbenzene, formaldehyde, carbon monoxide, sulfur dioxide, ammonia etc. at 6.8A °～2.7A °, and the aperture of attapulgite crystals is 3.7A °～6.4A °, and the aperture of 3A, 4A, 5A zeolite molecular sieve is between 2.7A °～5.4A °.That is to say, the aperture of attapulgite and above-mentioned zeolite molecular sieve all within the scope of micropore, thereby just in time can optionally adsorb above-mentioned those with it quite size surrounding air is polluted the most extensive modal organic pollution and chemical pollutant.
2, absorption-decomposition organically combines, and efficient improves: nano photo-catalytic titanium dioxide and nanometer air catalyst titanium dioxide are used, normally be sprayed directly on the surface of the peripheral or placement thing in the space that light or half-light are arranged that need purify air.So slow and random flow air is on the face that is attached with nano photo-catalytic titanium dioxide and nanometer air catalyst titanium dioxide of flowing through the time, airborne pollutant just " are caught ", and resolve into carbon dioxide and water with it.Therefore, because nano photo-catalytic titanium dioxide or nanometer air catalyst titanium dioxide itself do not possess adsorption function, itself do not possess adsorption function and be capped thing such as furniture, the wall, so it is not only passive but also inefficient that air pollution is administered in the cooperation between them yet.Also have, when nano photo-catalytic titanium dioxide or nanometer air catalyst titanium dioxide carry out spraying operation, have greatly and ripple in air owing to spray uneven and spray thing, thereby for causing unbecoming and new " pollution " of environment.And combine with the adsorbent of active carbon and so on when making air purifier (machine) with nano photo-catalytic titanium dioxide or nanometer air catalyst titanium dioxide, often with them by dip-coating repeatedly with it attached on the activated carbon surface.Active carbon then is with some binding agent it to be sticked on the object of honeycomb structure or network, the above-mentioned processing technology expense of not only taking a lot of work is expected, and can not give full play to the two function of they and active carbon, and the present invention is with modified attapulgite and powerful adsorption function and nano photo-catalytic titanium dioxide or the superior decomposition function of nanometer air catalyst titanium dioxide of zeolite molecular sieve, the three combines, light or half-light are being arranged, under the no optical condition, not only strengthened the speed of purifying air pollution, also improved the efficient of purifying air pollution, and comprise antibiotic, mildew-resistant, the deodorant effect, if make air purifier (machine) with it, that will be simplified processing technology and reduce consumptive material.Thereby superiority of the present invention is conspicuous.
3, technology environmental protection, with low cost, be fit to produce in batches: Activated Carbon Production itself not only consumes energy greatly, but also can produce waste water, waste gas and the venomous injurant of a large amount of acidity or alkalescence, causes very big pollution to environment.Therefore, the active carbon itself as important environmental protection raw material also grows out from non-environmental protection treatment.And the semi-finished product of active carbon and finished product (comprising the active carbon that is made into form such as spherical and cylindric) are also because intensity is low and frangible and easily efflorescence, and the outward appearance of black, wait also for the process of manufacturing and application and brought the environmental pollution that the people knew to the greatest extent in each link.And this preparation method overall process is substantially without the fuel of coal and so on, but based on electric energy.Because attapulgite has bonding force preferably, therefore when making spherolite, need not to add bonding agent at all.And because be spherical, its overall mechanical strength and surface strength are all fine, the micro-dust that in production and transport and use, is produced can better controlled within GB, thereby can not pollute to environment.
Description of drawings
Fig. 1 is the process flow diagram of the embodiment of the invention.
The specific embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As shown in Figure 1: the composite air purifying agent that originally contains nanometer mineral matters, form by natural minerals, molecular sieve, photocatalyst, modifier, foaming agent and surfactant, natural minerals is an attapulgite, the percentage by weight of attapulgite is 47～78%, molecular sieve is artificial zeolite's molecular sieve, and its percentage by weight is 20～50%; Modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, and its percentage by weight is 0.5～5%, and foaming agent is ammonium bicarbonate or sodium bicarbonate or aluminum sulfate, and its percentage by weight is 0.5～5%; Surfactant is a dodecyl dimethyl benzyl ammonium bromide, and its percentage by weight is 0.5～2%; Photocatalyst is nano photo-catalytic colloidal tio 2 solution and nanometer air catalyst colloidal tio 2 solution, and the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 0.2～2%; The percentage by weight of nanometer air catalyst colloidal tio 2 solution is 0.1～1%.
Preparation method specifically comprises ore dressing, purification, modification, activation, primary drying, a pelletize, redrying, secondary granulation, three dryings, roasting, screening and finished product detection packaging steps.
Embodiment 1:
(1) beneficiation steps: select for use attapulgite to have the pure natural mineral material concentrate of absorbability, content is more than 60%;
(2) purification step: the natural minerals of selecting for use is carried out purification processes, attapulgite is crushed to 325 orders;
(3) modification, activation step: by the suitable proportioning of weight of natural minerals after the purification proportioning, wherein the percentage by weight of attapulgite is 76% after the proportioning, the percentage by weight of artificial zeolite's molecular sieve is 20%, attapulgite clay after purifying soil is added surfactant, the percentage by weight that adds surfactant dodecyl dimethyl benzyl ammonium bromide is 0.5%, temperature is controlled under 50 ℃ activates reaming; Take by weighing 0.5% the sodium carbonate or ammonium bicarbonate or the sodium bicarbonate or the aluminum sulfate of sodium chloride or sodium fluoride or sodium sulfite and 1% more respectively, with both in an amount of water behind the mixed dissolution, the adding attapulgite in kneader, reaches semidry method modification purpose by mediating repeatedly together;
(4) primary drying step: the attapulgite behind the modified active is carried out primary drying;
(5) granulation step: add percentage by weight and be 20～50% artificial zeolite's molecular sieve and an amount of water and mix with attapulgite behind the modified active, and employing granulator carries out a pelletize, granularity is 0.5～1mm scope;
(6) redrying step: after carrying out a pelletize, put into flat electric furnace and carry out redrying;
(7) secondary granulation step: take by weighing 1% nano photo-catalytic titanium dioxide powder and 1% nanometer air catalyst titanium dioxide powder material, be mixed with glue, with last time particle adopt granulator to carry out secondary granulation, granularity is 1.5～3mm scope; Wherein the summation of attapulgite, artificial zeolite's molecular sieve, dodecyl dimethyl benzyl ammonium bromide, sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, ammonium bicarbonate or sodium bicarbonate or aluminum sulfate and nano photo-catalytic titanium dioxide powder and nanometer air catalyst titanium dioxide powder is 100%;
(8) three drying steps: temperature is controlled at carries out drying below 60 ℃;
(9) calcination steps: adopt flat electric furnace to carry out calcination activation for 250 ℃;
(10) screening and finished product detection packing.
Prepared composite air purifying agent can adsorb harmful gass such as removing formaldehyde, benzene, ammonia, TVOC fast, 24 hours clearance is respectively 94%, 91%, 93% and 91%, composite air purifying agent is heated to more than 45 degree, detect after 24 hours and do not find that pollutant discharge, illustrate that the pollutant purification that has been decomposed finishes.
Embodiment 2:
Comprise that ore dressing, purification, modification, activation, primary drying, a pelletize, redrying, secondary granulation, three dryings, roasting, screening and finished product detection packaging steps are identical with embodiment 1 among the embodiment 2, different is that percentage by weight is attapulgite 47%, artificial zeolite's molecular sieve 49%, and temperature is controlled under 80 ℃ and activates reaming; Wherein the summation of attapulgite, artificial zeolite's molecular sieve, dodecyl dimethyl benzyl ammonium bromide, sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite and ammonium bicarbonate or sodium bicarbonate or aluminum sulfate, nano photo-catalytic titanium dioxide powder and nanometer air catalyst titanium dioxide powder is 100%.
Embodiment 3:
Comprise ore dressing among the embodiment 3, purify, modification, activation, primary drying, a pelletize, redrying, secondary granulation, three dryings, roasting, sieve identical with embodiment 1 with the finished product detection packaging step, the percentage by weight of different is attapulgite is 57%, the percentage by weight of artificial zeolite's molecular sieve is 33%, the percentage by weight that adds surfactant dodecyl dimethyl benzyl ammonium bromide is 2%, the nano photo-catalytic titanium dioxide powder material and the 1% nanometer air catalyst titanium dioxide powder material that take by weighing 2.5% sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite and 2.5% ammonium bicarbonate or sodium bicarbonate or aluminum sulfate and take by weighing 2%, and temperature is controlled under 65 ℃ and activates reaming; Wherein the summation of attapulgite, artificial zeolite's molecular sieve, dodecyl dimethyl benzyl ammonium bromide, sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite and ammonium bicarbonate or sodium bicarbonate or aluminum sulfate, nano photo-catalytic titanium dioxide powder and nanometer air catalyst titanium dioxide powder is 100%.
The air purifying preparation that the present invention makes is to airborne organic pollution, improve extremely strong selective adsorption capacity, air cleaning rate height, the present invention adopts the semidry method modification, the technology environmental protection, with low cost, the product that obtains after the roasting is have enough mechanical strengths spherical, is difficult for fragmentation, and it is convenient to use, almost repeated use that can be unlimited economizes on resources.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the defined scope of spirit of the present invention.
Claims (9)
1. the composite air purifying agent that contains nanometer mineral matters, form by natural minerals, molecular sieve, photocatalyst, modifier, foaming agent and surfactant, it is characterized in that: described natural minerals is an attapulgite, the percentage by weight of attapulgite is 47～78%, described molecular sieve is artificial zeolite's molecular sieve, and its percentage by weight is 20～50%; Modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, and its percentage by weight is 0.5～5%, and foaming agent is ammonium bicarbonate or sodium bicarbonate or aluminum sulfate, and its percentage by weight is 0.5～5%; Surfactant is a dodecyl dimethyl benzyl ammonium bromide, and its percentage by weight is 0.5～2%; Photocatalyst is nano photo-catalytic colloidal tio 2 solution and nanometer air catalyst colloidal tio 2 solution, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 0.2～2%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 0.1～1%.
2. the composite air purifying agent that contains nanometer mineral matters according to claim 1, it is characterized in that: the percentage by weight of described attapulgite is 76%, the percentage by weight of artificial zeolite's molecular sieve is 20%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 0.5%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 0.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 1%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 1%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
3. the composite air purifying agent that contains nanometer mineral matters according to claim 1, it is characterized in that: the percentage by weight of described attapulgite is 47%, the percentage by weight of artificial zeolite's molecular sieve is 49%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 0.5%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 0.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 1%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 1%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
4. the composite air purifying agent that contains nanometer mineral matters according to claim 1, it is characterized in that: the percentage by weight of described attapulgite is 57%, the percentage by weight of artificial zeolite's molecular sieve is 33%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 2%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 2.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 2.5%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 2%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
5. contain the preparation method of the composite air purifying agent of nanometer mineral matters, it is characterized in that: comprise following concrete steps:
(1) beneficiation steps: select attapulgite natural minerals concentrate for use with absorbability;
(2) purification step: the natural minerals attapulgite of selecting for use is carried out purification processes, and wherein the percentage by weight of attapulgite is 47～78%, and attapulgite is crushed to 325 orders;
(3) modification, activation step: attapulgite clay after purifying soil is added surfactant, carrying out suitable proportioning by weight percentage mixes, surfactant is a dodecyl dimethyl benzyl ammonium bromide, and the percentage by weight that adds surfactant dodecyl dimethyl benzyl ammonium bromide is 0.5～2%; And add modifier, foaming agent, and modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, its consumption accounts for 0.5～5% of total weight percent after the purification proportioning; Foaming agent is ammonium bicarbonate or sodium bicarbonate or aluminum sulfate, and its consumption accounts for 0.5～5% of total weight percent after the purification proportioning; And adopt kneader to carry out the semidry method modification;
(4) primary drying step: the attapulgite behind the modified active is carried out primary drying;
(5) granulation step: add percentage by weight and be 20～50% artificial zeolite's molecular sieve and an amount of water and mix, and employing granulator carries out a pelletize with attapulgite behind the modified active;
(6) redrying step: the mixture after granulation step is carried out redrying;
(7) secondary granulation step: add nano photo-catalytic colloidal tio 2 solution and nanometer air catalyst colloidal tio 2 solution, and adopt granulator to carry out secondary granulation; Nano photo-catalytic colloidal tio 2 solution usage accounts for 0.2～2% of total weight percent after the purification proportioning; Nanometer air catalyst colloidal tio 2 solution usage accounts for 0.1～1% of total weight percent after the purification proportioning;
(8) three drying steps: the mixture after the secondary granulation step is carried out drying three times;
(9) calcination steps: the mixture after three granulation step is carried out calcination activation;
(10) screening and finished product detection packaging step: after screening, finished product detection is packed.
6. the preparation method that contains the composite air purifying agent of nanometer mineral matters according to claim 5 is characterized in that: described step 3 is specially temperature is controlled under 50～80 ℃ and activates reaming; Step 8 is specially temperature is controlled at carries out drying below 60 ℃; Step 9 is specially to adopt flat electric furnace and temperature is controlled at 200～300 ℃ carries out calcination activation.
7. the preparation method that contains the composite air purifying agent of nanometer mineral matters according to claim 6, it is characterized in that: the percentage by weight of described attapulgite is 76%, the percentage by weight of artificial zeolite's molecular sieve is 20%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 0.5%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 0.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 1%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 1%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
8. the preparation method that contains the composite air purifying agent of nanometer mineral matters according to claim 6, it is characterized in that: the percentage by weight of described attapulgite is 47%, the percentage by weight of artificial zeolite's molecular sieve is 49%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 0.5%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 0.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 1%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 1%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
9. the preparation method that contains the composite air purifying agent of nanometer mineral matters according to claim 6, it is characterized in that: the percentage by weight of described attapulgite is 57%, the percentage by weight of artificial zeolite's molecular sieve is 33%, the percentage by weight of dodecyl dimethyl benzyl ammonium bromide is 2%, the percentage by weight of sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite is 2.5%, the percentage by weight of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate is 2.5%, the percentage by weight of nano photo-catalytic colloidal tio 2 solution is 2%, and the percentage by weight of nanometer air catalyst colloidal tio 2 solution is 1%.
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