141results about "Granulation with special binding agents" patented technology

The present invention relates to a porous composite feedstock for metal chloride preparation, comprising a metal oxide containing material,; and / or a first additive; and a binder; wherein the porous composite feedstock is in particulate form; wherein the water content of the porous composite feedstock is in the range of from 0.01 to 5 wt.% based on the weight of the porous composite feedstock; and wherein the porous composite feedstock has a poured bulk density in the range of from 0.2 g / cm3 and 2.0 g / cm3.

The invention relates to the technical field of yellow phosphate rock powder clustering, in particular to yellow phosphate rock powder clustering equipment which comprises a base, a support is fixedly mounted at the top of the base, and spherical rotary drums are rotatably connected to the two sides of the inner wall of the support in a penetrating mode; a storage cylinder is fixedly mounted at the top of the support, a connecting pipe is rotatably connected into the storage cylinder in a penetrating mode, a quantifying cylinder is fixedly connected to the bottom of the connecting pipe, and a discharging assembly is arranged at the bottom of the quantifying cylinder. By arranging a quantitative barrel, a first through groove, a second through groove and a discharging assembly, the quantitative barrel is rotated to enable the first through groove to be aligned with the second through groove, an adhesive enters a connecting pipe through the first through groove and the second through groove, then the adhesive enters the quantitative barrel, scale marks are arranged outside the quantitative barrel, and after the liquid level in the quantitative barrel reaches a proper value, the adhesive is discharged. The quantitative barrel is rotated to enable the first through groove and the second through groove to be staggered, and the adhesive is quantitatively discharged into the spherical rotating barrel through the discharging assembly, so that the adding amount of the adhesive is controlled, and the agglomeration quality of the yellow phosphate rock powder is improved.

The invention discloses a glass fiber production kiln with a multi-stage heating function, and relates to the technical field of kilns, the glass fiber production kiln comprises a kiln body; the material mixing component is used for mixing the powder raw material with the diluted binder to form a mixture; the granulating part is used for granulating the mixture; the drying part is used for drying and primarily heating the prepared particles by utilizing the exhaust waste heat of the kiln; and the sintering part is used for sintering the dried particles, so that secondary heating of the particles is completed while the binder is decomposed. According to the invention, through the arrangement of the granulation part, before the raw materials are added into the kiln body, the raw materials are mixed and granulated technically, so that the raw materials exist in the kiln in a particle form, and the situation that the powdery raw materials fly around when being impacted by flames is avoided; in addition, larger gaps exist between the granular raw materials relative to the powder, flames can burn into the raw materials through the gaps between the raw material particles, and the melting effect is improved.

The invention discloses inorganic composite anhydrous calcium chloride and a preparation method thereof, and belongs to the technical field of chemical engineering. According to the preparation method, granular anhydrous calcium chloride is bonded to obtain a large-particle product of 20 mm by adopting an organic adhesive, so that the product has higher compactness, is not easy to decompose by moisture and hot gas, and can more smoothly settle to the lower part of a material layer to participate in reaction, and the effective conversion rate can reach 95% or above. The hydrogen chloride gas generated by decomposing calcium chloride in water is corrosive, the loss of large-particle products is small, the large-particle products are easier to settle below a material layer, and the chance of being adsorbed by a dust removal system is reduced, so that the content of chloride ions in the silica fume is remarkably reduced. The preparation method is simple and feasible in process and low in cost, large-scale industrial production is easy to realize, and various detection indexes of the prepared anhydrous calcium chloride meet the national standard.

The invention provides a liquid-phase dechlorinating agent and a preparation method thereof. The preparation method comprises the following steps: carrying out a neutralization reaction on a sodium metaaluminate solution and carbon dioxide-containing gas to obtain a solid-phase system containing pseudo-boehmite and sodium carbonate; the method comprises the following steps: dehydrating a solid-phase system containing pseudo-boehmite and sodium carbonate to obtain an active component; the active component and the binder are adopted as raw materials for roasting treatment, and the liquid-phase dechlorinating agent is prepared. The liquid-phase dechlorinating agent prepared by the invention has the characteristics of high dechlorinating activity and large chlorine capacity, and is suitable for removing inorganic chlorine in oil products, especially hydrogen chloride in reformate.

The present application aims to provide a fluidized bed, comprising: a cylinder, a centrifugal fan and a silo; the cylinder is a cylindrical container structure with a closed upper end and an open lower end; a baffle is arranged at the lower end of the cylinder, and the baffle has a first air port and a second air port; wherein the first air port is distributed close to the center of the baffle, and the second air port is distributed along the periphery of the baffle; the cylinder is connected with the upper end of the silo through the baffle; the centrifugal fan is located inside the cylinder and close to the upper end of the cylinder; an exhaust port is provided at the upper end of the cylinder; the lower end of the silo is connected with an air inlet; by using the centrifugal fan as a driving method and then arranging a baffle used in conjunction with the centrifugal fan, an internal and external spiral airflow can be formed in the cylinder, so that the dust can be naturally refluxed under the action of the internal and external spiral airflows, which can overcome the shortcomings of filtering dust removal and cyclone dust removal.

Provided are compositions and methods for the instant hydration of polyacrylamide granules of particle size greater than 500 µm comprising the same polyacrylamide powder of particle size less than 500 µm; and a binding agent or agents. More particularly, the polyacrylamide powder is combined with a water-destroyable binding agent forming polyacrylamide granules, which instantly hydrates when added to water.

The invention discloses straw carbon-based carbon particles and a manufacturing device and method, and relates to the technical field of agricultural ecological environmental protection equipment.The method comprises the following steps that S1, straw is subjected to component separation treatment, and a liquid component, a carbonized precursor rich in lignin and a fiber base material containing cellulose are obtained; s2, performing carbonization treatment on the carbonized precursor to obtain biochar; dissociating the fiber base material to obtain a fiber inner core material; s3, the liquid component serves as an adhesive, the fiber inner core material serves as a particle inner core, biochar serves as a coating outer layer, and carbon particles of a core-shell structure are prepared through a forming technology. Straw is subjected to component separation before carbonization, directional utilization of all components of straw is achieved, compared with an existing mode that straw is directly carbonized and returned to the field, the carbon particles are more environmentally friendly, and the cost is reduced. The carbon particles prepared by the method are beneficial to subsequent fermentation and field application, can reduce the risk of secondary pollution such as dust raising, are beneficial to regulation and control of the soil carbon release process, and improve the comprehensive utilization efficiency of straws.

The invention discloses a particle size controllable granulation device and method, the device comprises a mounting rack and a unidirectional rotating granulation disc, the bottom of the granulation disc is provided with a receiving hopper fixedly connected with the mounting rack, the top of the receiving hopper is provided with a particle size control assembly used for guiding out materials in the granulation disc, and the particle size control assembly is connected with the mounting rack. The particle size control assembly comprises a fixed blocking piece and a movable blocking piece, a plurality of first hollowed-out holes are formed in the surface of the fixed blocking piece in an array mode, and a plurality of second hollowed-out holes are formed in the surface of the movable blocking piece in an array mode. Through hollowed-out holes formed in the fixed separation blade and the movable separation blade in a staggered mode and a specific inclination angle, materials form a unique movement track in the granulation disc, the circulation movement of stacking-climbing-falling of the materials is achieved, particles are promoted to be fully agglomerated, meanwhile, coarse particles move outwards under the action of centrifugal force, and therefore the particle size of the particles is reduced. And the materials are collided at the fixed separation blade and the movable separation blade to be scattered and refined, and additional crushing treatment is not needed.

A method of immobilizing contaminants disposed in an aqueous medium comprising contacting the aqueous medium with a particulate crystalline nanocomposite for a sufficient contact time to permit adsorption of the contaminants. The particulate crystalline nanocomposite includes: a tetragonal (CaMoO4) crystalline phase; a (CaSiO3) crystalline phase; and, a graphitic-(C3N4) crystalline phase, wherein at least a fraction of the graphitic-C3N4 is in the form of mesoporous nanosheets.

The invention provides a lanthanum-loaded fluorite ball seed crystal and a method for treating fluorine-containing wastewater by using the lanthanum-loaded fluorite ball seed crystal. The preparation method of the lanthanum-loaded fluorite ball seed crystal comprises the following steps: firstly, mixing sodium silicate and polyacrylamide, and ultrasonically and uniformly dispersing the mixture in an aqueous solution to obtain a composite binder; then calcium fluoride powder and a composite binder are evenly mixed and then put into a pelletizer to be pelletized, and fluorite ball particles are obtained after the mixture is taken out and dried; and finally, soaking the obtained fluorite ball particles in a lanthanum solution, and roasting to obtain the lanthanum-loaded fluorite ball seed crystal. When the lanthanum-loaded fluorite ball seed crystal is used for fluorine-containing wastewater treatment, the fluorite ball is used as the seed crystal to induce calcium fluoride to crystallize on the surface of the fluorite ball, and fluorine ions in a solution are effectively removed. According to the method, the fluorine removal rate is high, fluorite ball seed crystals after induced crystallization and calcium fluoride loaded on the surface of the fluorite ball seed crystals are high in purity and can be recycled for the second time, waste such as sludge is not generated in the reaction process, and therefore an additional foreign matter removing device is not needed.

To provide a method for producing granulated powder in which the surface of each of the multiple magnetic particles contained in the granulated powder can be easily coated with a resin composition. [Solution] The raw materials for the granulated powder (30) are a slurry 9 containing a magnet powder consisting of multiple magnet particles 3, a resin composition 5, and an organic solvent. The magnet powder is an alloy containing Sm, Fe, and N. The resin composition 5 contains a thermosetting resin. By spraying the slurry 9, multiple fine particles 10 made of the slurry 9 are formed. When a magnetic field H is generated by the coil 4, the multiple fine particles 10 are supplied to the inside of the coil 4 by the magnetic field H. Inside the coil 4, the multiple fine particles 10 aggregate due to the magnetic field H, forming multiple aggregates 20. By heating the multiple aggregates 20, the organic solvent is removed from the multiple aggregates 20, and the multiple aggregates 20 become granulated powder (30).

The utility model relates to the technical field of powder adsorbent processing, and discloses a powder adsorbent processing system which comprises a feeding module for processing a powder adsorbent, a glue supply module and a drying module, the feeding module is used for conveying powder raw materials; the glue supply module is used for conveying glue into the material supply module; the drying module is used for drying and curing the mixed and extruded materials; by using the vibrator, caking or bridging of powder in the stock bin is effectively prevented, smooth outflow and uniform mixing of the powder are ensured, continuous flowing and drying of the material are ensured by continuous operation of the belt conveyor and the belt dryer, interruption and waiting time in the production process are avoided, and the production efficiency is improved. The hot air provided by the hot air furnace can comprehensively and efficiently dry materials in the belt dryer, the problems of caking, mildewing and the like caused by water residues are prevented, the product strength and stability are enhanced, and the performance and quality of an adsorbent are improved.

Provided are: a particle-containing fiber bundle that is highly uniform and has further improved feeding efficiency; and a production method for the same. A particle-containing fiber bundle production method according to the present invention is for producing a particle-containing fiber bundle having a prolate spheroidal shape or a strand shape, the method comprising a step for mixing a plurality of shortened fibers, particles having a median diameter of at most 100 μm, an organic binder, and a liquid. Carbon fibers are included as the fibers, and at least 10 parts by mass of the particles are used with respect to 100 parts by mass of the fibers.

The utility model relates to the technical field of production of diamond agglomerated balls, in particular to a feeding device for diamond agglomerated ball granulation equipment, which comprises an equipment box, primary conveying frames are rotatably mounted on two sides of the outside of the equipment box, and the primary conveying frames are driven by a driving motor to rotate. Second-stage conveying frames capable of doing reciprocating motion are installed on the inner sides of the exteriors of the two first-stage conveying frames correspondingly, and first moving seats capable of doing reciprocating motion are installed in the two second-stage conveying frames correspondingly. The device has the advantages that the middle seat and the base are installed below the equipment box, the supporting rods capable of doing reciprocating motion are installed at the four corners of the top face of the middle seat and the four corners of the top face of the base respectively, each set of supporting rods are arranged in a crossed mode and provided with the pin columns in a penetrating mode, and the other ends of the supporting rods are rotationally installed on the equipment box and the fixing seat on the bottom face of the middle seat respectively. The distances among the equipment box, the middle seat and the base can be adjusted through movement of the supporting rods, and then the purpose of adjusting the overall height of the device is achieved.

The utility model discloses an organic fertilizer granulation device for adjusting viscosity, which comprises a support frame, granulation cylinders are symmetrically and fixedly mounted on the support frame, a granulation shaft is mounted at the centers of the two granulation cylinders, granulation screws are mounted at the parts, positioned in inner cavities of the two granulation cylinders, of the granulation shaft, a motor seat is fixedly mounted on the side wall of the granulation cylinder on one side, and the motor seat is fixedly mounted on the side wall of the granulation cylinder on the other side. A motor base is arranged on the two granulation cylinders, a servo motor is installed on the motor base, the output end of the servo motor is connected with one end of a granulation shaft, a connecting frame is welded to the top surfaces of the two granulation cylinders, a mixing cylinder is fixedly installed on the connecting frame, and a feeding pipe is connected between the interior of the mixing cylinder and an inner cavity of the granulation cylinder in a communicating mode. The organic fertilizer granulation device has the beneficial effects that the granulation cylinder and the mixing cylinder are arranged, organic fertilizer raw materials and a binder can be uniformly mixed and stirred before granulation, additional electric driving equipment does not need to be mounted, the processing viscosity can be adjusted by controlling the injection amount of the binder, the product quality is favorably improved, and the practicability is higher.

The present application relates to a method for preparing a granule comprising guanidinoacetic acid, the method comprising the steps of: a) providing a fermentation broth comprising guanidinoacetic acid and biomass; b) reducing the water content in the fermentation broth provided in step a) to obtain a concentrated fermentation broth; and c) subjecting the concentrated fermentation broth of step b) to wet granulation.

The utility model discloses continuous solid preparation granulating equipment which comprises a placing seat, a granulating barrel is fixedly connected to the inner side of the upper end of the placing seat, a plurality of holes are formed in the outer side of the granulating barrel, the holes are annularly and uniformly distributed at equal angles, a grinding blade is rotationally connected to the center of the inner bottom surface of the granulating barrel, and the grinding blade is rotationally connected to the center of the inner bottom surface of the granulating barrel. And the rolling blades make contact with the inner side of the granulating barrel, a rolling motor is fixedly installed on the inner bottom face of the containing base, and the output end of the rolling motor penetrates through the granulating barrel and is fixedly connected with the centers of the rolling blades. According to the structure, the driving mechanism and the scraping ring are matched with each other, so that the driving mechanism drives the scraping ring to move up and down in a reciprocating manner, particles extruded by the rolling blades are pushed off while the hanging ring moves up and down in a reciprocating manner, and materials adhered to the outer side of the granulating barrel are removed while the particles are pushed off; and manual scraping and cleaning are not needed, and time and labor are saved.

The utility model discloses drying equipment for continuous granulation, and particularly relates to the technical field of granulation drying, the drying equipment comprises a box body, an air bellow, an L-shaped pipe, a feed port and a discharge port, the air bellow is located at the bottom of the box body and is connected with the box body, an air inlet pipe is arranged on the surface of the air bellow, the feed port and the discharge port are both arranged on the side wall of the box body and are communicated with an inner cavity of the box body, and the L-shaped pipe is arranged in the box body. An L-shaped pipe is arranged at the top of the box body, and a spray head is arranged at one end of the L-shaped pipe and installed in an inner cavity of the box body; adjusting assemblies are arranged at the bottom of the inner cavity of the box. By arranging the adjusting assembly, in the discharging process, the hydraulic rod is used for pushing the finished product quantitative filtering plate to move towards the discharging opening, meanwhile, powder raw materials and granulation finished products are filtered through the finished product quantitative filtering plate, and the finished products on the surface of the finished product quantitative filtering plate are discharged through the discharging opening through the discharging device; therefore, the phenomenon that fine raw materials are discharged together in the discharging process of finished products is reduced.

The present application provides a kind of coal additive by means of aluminum sulfate reaction, the raw material of the coal additive includes by weight percentage: catalyst 40-55%; oxidant 25-35%; fluorite 10-20%; silicon calcium powder 2-6%; the catalyst is composed of aluminum powder and sulfate according to (3-4):1 mole ratio.The present application also provides a kind of preparation method of coal additive by means of aluminum sulfate reaction, after drying, each raw material powder is mixed, then mixed with organic cellulose and water configuration organic binder, to make several small pellets, drying is obtained coal additive.The present application also provides the application of the above-mentioned coal additive by means of aluminum sulfate reaction in improving the combustion efficiency of coal, the coal additive can greatly improve the combustion efficiency of coal by means of the high heat release system of "aluminum + sulfate", and the production cost is low, safe and environmentally friendly, has broad popularization and application prospect.

The invention relates to a powder processing mechanism and a dry mixing method. The powder processing mechanism comprises a mixing module, a compaction module, a kneading module, a block breaking module and a shaping module which are sequentially stacked in the vertical direction. The mixing module is used for mixing and dispersing various preset powder materials and outputting primarily mixed first mixed powder; the jolt ramming module is used for mechanically fusing the first mixed powder and outputting uniformly coated second mixed powder; the kneading module is used for kneading and homogenizing the second mixed powder and outputting a third mixed bulk with a three-dimensional fiber network; the block breaking module is used for breaking the third mixed bulk and outputting fourth mixed powder with the particle size of centimeter level and below; and the shaping module is used for shaping the fourth mixed powder and outputting fifth mixed powder with the particle size of millimeter and below. Through multi-module integration, multi-powder continuous mixing dispersion, fusion coating and homogeneous kneading can be realized, the fibrosis degree and uniformity of an adhesive can be accurately regulated and controlled, and the particle size precision can be accurately controlled, so that continuous production is realized.

The invention provides expanded perlite with a porcelain shell and a preparation method and application thereof, and the preparation method comprises the following steps: pretreating perlite ore to obtain first perlite particles; proportioning the first perlite particles and a binder according to a mass ratio, and uniformly mixing the first perlite particles and the binder to obtain second perlite particles; sequentially adding vitreous cladding powder and porcelain cladding powder into the second perlite particles for granulation to sequentially obtain A-type third perlite particles and B-type third perlite particles; carrying out drying and preheating treatment on the B-type third perlite particles to obtain fourth perlite particles; and carrying out high-temperature expansion treatment on the fourth perlite particles to obtain the expanded perlite with the porcelain shell. The ceramic shell expanded perlite prepared by the invention has a shell / core composite structure, the shell is a ceramic layer formed by sintering a ceramic cladding component, the core is an expanded product of the first perlite particles, and the ceramic shell expanded perlite has the characteristics of high expansion time, small bulk density, high cylinder compressive strength, low heat conduction coefficient, small water absorption rate, acid and alkali corrosion resistance and the like.

The invention relates to the technical field of calcium-based adsorbent production, and discloses a calcium-based adsorbent efficient production system which comprises a raw material conveying module, a preparation module and a processing module, the raw material conveying module is used for conveying raw materials needed for preparing a calcium-based adsorbent to the preparation module; the preparation module is used for mixing the raw materials and obtaining the calcium-based adsorbent; the processing module is used for processing the strip-shaped calcium-based adsorbent and then drying the strip-shaped calcium-based adsorbent; the raw material conveying module comprises a first storage tank, a first electric vibrator, a first screw feeder, a vacuum feeder, a second storage tank, a third storage tank, a third electric vibrator and a second screw feeder; the raw materials, namely the quick lime and the fly ash, are common industrial byproducts, the quick lime is widely applied to construction and chemical engineering, the fly ash is common waste of a coal-fired power plant, and the raw materials are relatively easy to obtain and low in price.

The application belongs to the field of vinyl chloride synthesis process, and particularly relates to a vinyl chloride synthesis process device capable of reducing the loss of gold-based catalysts. The device comprises a converter A, a converter B, a raw material gas pipeline, a front-back station interconnection pipeline and a crude vinyl chloride pipeline; a first valve is arranged between the raw material gas pipeline and the converter A, a second valve is arranged between the front-back station interconnection pipeline and the converter A, a fourth valve is arranged between the crude vinyl chloride pipeline and the bottom of the converter A, a third valve is arranged between the bottom of the converter A and the front-back station interconnection pipeline, a fifth valve is arranged between the raw material gas pipeline and the upper part of the converter B, a sixth valve is arranged between the front-back station interconnection pipeline and the converter B, an eighth valve is arranged between the bottom of the converter B and the crude vinyl chloride pipeline, and a seventh valve is arranged between the bottom of the converter B and the front-back station interconnection pipeline. The application can reduce the loss of gold components in the production process, improve the recovery rate of gold-based catalysts, and has a good application prospect.

The application relates to the technical field of phase change heat storage packaging, in particular to a high-temperature shaped phase change particle manufacturing device and method, which comprises a dissolving and stirring mechanism, a mixing and forming mechanism and a screening mechanism; the dissolving and stirring mechanism is used for uniformly dissolving a phase change material in a binder solution to obtain a phase change material solution and uniformly flowing into the mixing and forming mechanism in a filament form; the mixing and forming mechanism is used for uniformly mixing the phase change material solution with a skeleton support material, then extruding and cutting the phase change material solution into particles, discharging the particles and falling into the screening mechanism; the screening mechanism screens qualified shaped phase change particles from the falling particles, and the qualified shaped phase change particles are used for subsequent sintering and cooling to obtain final shaped phase change particles. The application shows its innovation value in improving production efficiency, ensuring operation safety and widening the application range of materials, and makes an important contribution to the progress of material preparation technology in the fields of energy and chemical industry.

A particle-containing fiber bundle having high uniformity and further improved feed efficiency, and a production method of the same are provided. The particle-containing fiber bundle production method of the present invention is for producing a particle-containing fiber bundle having a prolate spheroidal shape or a strand shape, the production method including a step of mixing a plurality of shortened fibers, particles having a median diameter of 100 µm or less, an organic binder, and a liquid, in which the fibers include carbon fibers, and the particles are used in an amount of 10 parts by mass or more with respect to 100 parts by mass of the fibers.

The present disclosure relates to a dried biological composition comprising at least one silica, a mixture of polysaccharides and glycoproteins, at least one microorganism, at least one sugar or sugar alcohol, and a resin. The dried biological composition is produced by the steps of (a) mixing at least one silica, a mixture of polysaccharides and glycoproteins, at least one microorganism, and at least one sugar or sugar alcohol in an aqueous solution, (b) spray drying the mixture of (a), and (c) coating the spray-dried mixture (b) with a compound comprising a resin in a fluidized bed. The composition is intended for agricultural applications such as foliar application or seed treatment.

The invention discloses a processing device of a fertilizer for enhancing waterlogging resistance of atractylodes macrocephala koidz. The processing device comprises a conveyor, a film coating tank, a collecting box, a purifying box, a cooling pipeline, an air bellow and a feeding pipeline, wherein a filtering block is arranged in the purifying box; a film coating cavity of which a discharge hole is communicated with the collecting box is formed in the film coating tank; the collecting box further comprises a wind power inlet and a wind power outlet. A first external pipeline is arranged at the end, away from the collecting box, of the purifying box. The purifying box is in butt joint with a wind power outlet of the collecting box. One end of the air bellow is in butt joint with the wind inlet of the collecting box, and the other end of the air bellow is provided with a second external pipeline. And the feeding pipeline is connected with an atomizing nozzle. According to the device, dust explosion is effectively avoided through closed machining, and the situation that sulfur blocks and blocks a pipeline is not likely to occur.

The application provides a lanthanum-loaded fluorite ball seed and a method for treating fluorine-containing wastewater, and a preparation method of the lanthanum-loaded fluorite ball seed comprises the following steps: firstly, mixing sodium silicate and polyacrylamide, and then uniformly dispersing the mixture in an aqueous solution to obtain a composite binder; secondly, uniformly mixing calcium fluoride powder and the composite binder, and then feeding the mixture into a granulator to granulate, and taking out and drying the fluorite ball particles; finally, soaking the fluorite ball particles in a lanthanum solution, and then baking to obtain the lanthanum-loaded fluorite ball seed. When the lanthanum-loaded fluorite ball seed is used for fluorine-containing wastewater treatment, the fluorite ball seed induces the crystallization of calcium fluoride on the surface of the fluorite ball seed, and the fluorine ions in the solution are effectively removed. The defluorination rate of the application is high, the purity of the fluorite ball seed after induced crystallization and the surface-loaded calcium fluoride is high, and the fluorite ball seed and the calcium fluoride can be recycled twice, and no sludge and other wastes are generated in the reaction process, so that no additional foreign matter removing device is needed.

The present invention relates to a self-floating composite agent for treating toxic algae blooms in water bodies and a preparation method thereof. The self-floating composite agent is made of the following raw materials in parts by weight: 35-45 parts of an algae control active substance; 15-20 parts of an adhesive; 0-20 parts of a hydrophobic modifier; 0-5 parts of an organic acid; 3-10 parts of a flocculant; 0-20 parts of a lightweight auxiliary material; 0-3 parts of a bulking agent; and 0-6 parts of an anti-adherent agent. The present invention also provides a method for preparing the above-mentioned composite agent characterized by fluidized coating or extrusion granulation. The advantage of the present invention is that the prepared composite agent can float on the water surface and slowly release the active ingredient on the surface of the water body, continuously and accurately controlling the toxic algae blooms in the surface water column of the water body, and continuously and slowly releasing the algae control ingredients, significantly prolonging the maintenance time of the algae control effect. In the process of gradually spreading and sinking to the bottom of the water column, it also has a significant inhibitory effect on the harmful algae blooms in the middle and bottom of the water column.