1028 results about "Granulation" patented technology

The invention relates to the technical field of feed quality control, in particular to an intelligent feed processing quality control method and system. According to the method, the operation parameters and the environment temperature and humidity of the production equipment are acquired in real time, and the environment and equipment state parameter set is established, so that the influence factors of the production conditions are quantified, and an accurate basis is provided for parameter adjustment of the subsequent processing flow. In the production process, the adaptive processing flow threshold value is calculated based on the operation stability of equipment and the change trend of raw material components, and unstable product quality caused by raw material fluctuation or equipment state change is avoided. And whether key indexes in the production process are in an adaptive range or not is dynamically judged by combining the change conditions of the steam absorption rate and the granulation pressure, so that the processing flow control is finer. For trend deviation possibly occurring in the production process, the stability of the production process is analyzed by analyzing the equipment load level, the energy consumption change synchronism and the abnormal trend of processing flow parameters.

The invention relates to the technical field of sewage treatment, and discloses a novel sulfur autotrophic denitrification filter material and a preparation method and application thereof.The particle size of the filter material is 3.0-4.0 mm, and the filter material is prepared from 40%-45% of a composite sulfur source, 70 + / -2% of sulfur and 30 + / -2% of sodium thiosulfate, 30%-35% of modified ceramsite, 50-100 [mu] m / 200-300 [mu] m of bimodal pore size and 8%-10% of a conducting medium. The ratio of graphene to biochar is 3: 1), a buffer medium (5%-7%, Fe2O3 (52% + / -2%), CaCO3 (31% + / -2%) and MgO (17% + / -2%), a binder and an inert filler. The preparation method comprises the steps of raw material pretreatment, mixing granulation, stepped calcination, gradient impregnation, buffer medium directional loading, post-treatment and the like. The filter material solves the problems of by-product accumulation, insufficient microbial adhesion, large pH fluctuation and blockage of a traditional filter material through gradient sulfur release, a three-dimensional electron transfer network, a multistage pore anti-blockage design and a composite pH buffer system, is suitable for sewage denitrification treatment, and is high in denitrification efficiency and good in stability.

The invention relates to the technical field of granulation control, and discloses a powder granulation control method and system based on fuzzy control, the system comprises a data acquisition unit, a data processing unit, a data analysis unit and a data adjustment unit; by collecting key parameters such as powder humidity in real time, instant and accurate data are provided for control; through fine processing such as filtering, normalization and feature extraction, data noise is removed, the data scale is unified, and parameter dynamic change features are deeply mined; by means of a preset fuzzy rule, the parameter features are converted into fuzzy linguistic variables for reasoning, and the equipment adjustment amount can be scientifically and reasonably determined; in the execution link, a final adjustment value is determined through weighted average, and precise regulation and control of the granulation equipment are achieved; the rich and practical fuzzy rule base covers various parameter deviation combinations, so that the system can adapt to different granulation working conditions, and the granulation efficiency and the product quality are effectively improved.

The invention relates to a method for preparing MgAlON ceramic with high infrared transmittance by utilizing coarse powder pressureless sintering, and belongs to the field of ceramic preparation. A method for preparing MgAlON ceramic with high infrared transmittance by utilizing pressureless sintering of coarse powder comprises the steps that pure-phase MgAlON powder and a sintering aid are subjected to ball-milling mixing, drying and granulation to obtain mixed powder of MgAlON and the sintering aid, the mixed powder is formed and subjected to pressureless sintering in the nitrogen atmosphere to obtain the MgAlON ceramic, the atomic ratio of Mg to Al to O to N in the pure-phase MgAlON powder is 1: (10-20): (15-25): (2-4), and the atomic ratio of Mg to Al to O to N in the sintering aid is 1: (10-20): (15-25): (2-4). The D50 of the mixed powder of the MgAlON and the sintering aid is 1.1-2.0 [mu] m, and the particle size distribution range is 0.2-10 [mu] m. According to the method, the difficulty of a ball-milling process is small, the risk that impurities are introduced due to particle refinement can be effectively reduced, sintering equipment is easy to obtain, the heat preservation time in the pressureless sintering process is short, the obtained ceramic is high in infrared transmittance, good in energy-saving effect, high in efficiency, low in cost and suitable for preparation of large-size and complex-shape sample pieces, and industrialization is easy to achieve.

The invention discloses a polyethylene composite geomembrane and a processing technology thereof in the field of geosynthetic materials. The polyethylene composite geomembrane is prepared from the following raw materials: high-density polyethylene, polyethylene grafted maleic anhydride, a nano montmorillonite / low-density polyethylene composite modifier, an antioxidant, a light stabilizer and a lubricant calcium stearate. Wherein the polyethylene grafted maleic anhydride is prepared by drying high-density polyethylene, mixing the dried high-density polyethylene with maleic anhydride, an initiator and an antioxidant, and performing melt extrusion through a double-screw extruder, so that the surface polarity is improved; the nano-montmorillonite / low-density polyethylene composite modifier is prepared by ultrasonically dispersing Na-montmorillonite, adding hexadecyl trimethyl ammonium bromide, stirring, centrifugally drying to obtain organic modified montmorillonite, mixing the organic modified montmorillonite with low-density polyethylene, performing intercalation reaction, and performing twin-screw extrusion and blending, so that the barrier property is enhanced. The processing technology comprises the steps of raw material mixing, twin-screw extrusion granulation and calendaring molding, and finally the polyethylene composite geomembrane with remarkably improved interface cohesiveness, weather resistance and barrier property is prepared.

The present invention discloses a wastewater crystallization granulation fluidized bed treatment device and a treatment method thereof. The wastewater crystallization granulation fluidized bed treatment device comprises a crystal seed delivery system, an alkali solution dosing system, a coagulation system, a sludge discharge system, a coarse particle collection system and a fluidized bed reactor. The crystallization granulation fluidized bed treatment device of the present invention adopts a variable diameter design so that the rising water velocity is distributed with the height, which facilitates the suspension of crystal seeds of different particle sizes, improves the utilization rate of the crystal seeds and the hardness removal efficiency, and has the functions of removing hardness and turbidity.

The invention discloses a multistage intelligent adjustable rotational flow atomization granulation system and device, and belongs to the technical field of atomization granulation, the multistage intelligent adjustable rotational flow atomization granulation system comprises a first end cover and a second end cover, a roller is arranged between the first end cover and the second end cover, and spiral conveying blades are arranged on the inner wall of the roller; the mixing head is fixed to the first end cover, a mixing chamber is arranged in the mixing head, and multiple first spraying holes are circumferentially distributed in the end face; the liquid conveying pipe extends to the material mixing chamber along the axis of the gas conveying pipe, a plurality of nozzles are arranged at the tail end of the liquid conveying pipe, and the spraying direction of the nozzles is perpendicular to the gas conveying direction of the gas conveying pipe; and the sleeve is sleeved with the infusion tube and is provided with a spiral guide vane, so that the airflow is accelerated into a high-speed spiral shape in the contraction channel. Feed liquid and air flow are vertically collided and sheared, so that the turbulence mixing strength is enhanced, and the atomization uniformity is improved; the adjusting assembly switches the nozzles of different specifications through the rotating shell, and multi-stage crushing particle size adjustment is achieved.

The invention relates to a high-speed mixing granulation device capable of achieving multi-stage cutting, in particular to the technical field of granulation, the high-speed mixing granulation device comprises a mixing cavity, a stirring main shaft is connected to the center of the top of the mixing cavity through a bearing, and radial fan-shaped cutters are fixedly connected to the outer wall of the top of the stirring main shaft; a radial fan-shaped cutter is arranged in the mixing cavity, a cutting blade is arranged at the bottom of the radial fan-shaped cutter, a crossed spiral cutter is arranged at the bottom of the cutting blade, the crossed spiral cutter is fixedly connected with the outer wall of the stirring main shaft, a servo motor is fixedly connected to the center of the top of the mixing cavity, and the output end of the servo motor is connected with the stirring main shaft. Powder can be radially thrown and agglomerated through the radial fan-shaped cutters, wet agglomerates are crushed into fine particles through the cutting blades, sphere-like particles are formed through repeated collision and extrusion, the cross spiral cutters on the lower layer rotate to generate vortex to compact the particles, and the mixing time is shortened through the synergistic effect of the three stages of cutter sets.

The invention belongs to the field of industrial waste treatment and comprehensive utilization, and provides a method and a process for preparing a heavy metal polluted acidic wastewater purifying agent by coupling red mud with carbide slag, and the process comprises the following steps: S1, raw material pretreatment: respectively drying original red mud and carbide slag at 105 + / -5 DEG C to constant weight, crushing, and sieving with a 100-mesh sieve; s2, mixing: uniformly premixing the red mud and the carbide slag powder in proportion, mixing the mixture with a binder in proportion, and uniformly stirring; s3, activating: slowly spraying a proper amount of water into the uniformly mixed dry powder, and stirring while adding until the material forms a wet block mass with certain plasticity; s4, granulation: feeding the wet material into a granulator with the granulation particle size of 2-5 mm, and aging the raw material particles at room temperature for 12-24 hours; and S5, drying and activating: drying the aged particles at 105-120 DEG C until the weight is constant, cooling to room temperature, and sieving to obtain the purifying agent product. The method has the effects of being high in heavy metal removal rate, stable, safe and efficient.

The invention relates to the technical field of soil improvement, in particular to a red soil improver and a preparation method and application thereof. The preparation method of the red soil improver provided by the invention comprises the following steps: S1, preparing a mixture: grinding specific materials to obtain a first base material; adding a specific first auxiliary material into the first base material, and grinding to obtain a first mixture; grinding a specific material to obtain a second base material; adding a specific second auxiliary material into the second base material, and grinding to obtain a second mixture; s2, preparing a semi-finished product of the modifier: mixing the first mixture and the second mixture, performing ultrasonic dispersion, and then adding the modifier for reaction; s3, preparing the modifier: drying and granulating the modifier semi-finished product to obtain the red soil modifier. According to the invention, the organic combination of comprehensiveness, economical efficiency and environmental protection of soil improvement is realized, and the method has remarkable technical advantages and wide application prospects.

The invention belongs to the technical field of soluble particle microcapsule wrapping, and particularly relates to a soluble particle microcapsule wrapping process and application thereof. According to the microcapsule wrapping process, a fluidized bed body is used for preparing microcapsules; the air distribution plate is arranged in the fluidized bed body and is used for generating uniform airflow; the screening device comprises a collecting cover, a screening plate and a material pressing assembly, and the collecting cover is located at the top of the air distribution plate. By arranging the material pressing assembly, in the granulating process, a screening plate can screen large-particle particles, then the screened large-particle particles can fall into the top of a baffle ring through a notch of the screening plate, and therefore the large-particle particles can be pressed into small-particle particles by being matched with the grinding and extruding effect of a material pressing ring on the large-particle particles; further, the sizes of the prepared particles can be kept consistent, the effects of final products are consistent, meanwhile, subsequent screening operation of an existing granulation process is also avoided, and the granulation efficiency is improved.

The invention belongs to the technical field of granulation devices, and particularly relates to a self-drying biomass particle granulation device which comprises a bottom plate, a shell fixed to the top of the bottom plate, a transmission box fixed in the shell, a barrel fixed to the top of the shell, a discharging plate installed on the outer wall of the barrel, a motor fixed to the side of the transmission box, and a granulation disc connected to an output shaft of the transmission box. A center shaft is further arranged in the barrel, a pair of pressing rollers is rotationally connected to the center shaft, and the temperature collecting module is used for generating a temperature fluctuation coefficient through the control module; and the current acquisition module generates a current fluctuation coefficient through the control module. The extrusion temperature of the material and the working current of the motor are monitored in real time through the temperature acquisition module and the current acquisition module, the generated temperature fluctuation coefficient and the current fluctuation coefficient are comprehensively analyzed, the evaluation coefficient is generated, the evaluation coefficient is compared with a preset reference threshold value, the heating temperature and the rotating speed of the granulation disc are flexibly adjusted, and the granulation efficiency is improved. And the stability of granulation quality is ensured.

The utility model discloses a fly ash and multi-source solid waste plasma melting collaborative resource treatment system which comprises a fly ash stock bin, a fly ash stock bin, a binder storage tank, a material intermediate bin, a glass stock bin, a stirrer, an extrusion forming granulator, a plasma furnace and a control center. Normal operation of the whole system is completed through accurate matching, quantitative matching of the binder and coordination and matching of valves of all devices. Resourceful treatment of various solid wastes such as fly ash, fly ash and waste glass bottles is realized, the fly ash and fly ash are mixed to form a low-melting-point mixture, low-temperature generation of a liquid phase is promoted, the melting temperature is reduced, the energy efficiency is improved, the treatment cost is saved, and meanwhile, a stable glass phase is formed; according to the plasma furnace, the raw materials are granulated after being mixed, and the process that powdery materials directly enter the furnace is replaced, so that the problem that slag is difficult to discharge in the plasma furnace is solved, and secondary dust raising is prevented.

The utility model relates to the technical field of compound fertilizer production and processing, and discloses a multi-stage drum granulator which comprises a base, and the bottom of the base is hollowed out; the protective shell is arranged at the upper end of the base, the protective shell is fixedly connected with the base, and one end of the protective shell is fixedly connected with a feeding port; the granulation assembly is arranged in the protective shell, the granulation assembly is used for screening while granulation, the granulation assembly comprises mounting frames, a connecting pipe and a rotary drum barrel, the mounting frames are symmetrically arranged on the protective shell and fixedly connected with the protective shell, and after granulation, the fertilizer is driven by the auger to move towards the direction of the second discharge port; the small-size fertilizer falls to the opening of the protective shell through the holes in the rotary drum and is discharged through the first discharge port, and the large-size fertilizer is discharged from the second discharge port under the driving of the auger, so that secondary screening of waste particles by virtue of a screening machine is avoided, the production steps are reduced, and the production cost is reduced.

The invention discloses ultrahigh-temperature material single-phase Hf < x > Ta < 1-x > C powder and a preparation method thereof. The preparation method comprises the following steps: carrying out wet ball milling on Hf < C > powder and TaC powder, heating, stirring, grinding and sieving to obtain mixed powder; granulating the mixed powder, drying and sieving to obtain agglomerated powder; carrying out high-temperature Joule heat treatment on the agglomerated powder in an environment with a vacuum degree of less than 0.093 MPa by adopting a multi-time heating-cooling circulation Joule heat technology, so that TaC and HfC are mutually diffused in the high-temperature Joule heat treatment process and are completely subjected to solid solution to obtain single-phase Hf < x > Ta < 1-x > C powder with good uniformity; the preparation method disclosed by the invention has the characteristics of simple equipment operation, controllable reaction process, short reaction time and low energy consumption.

The application relates to a bauxite-based corundum mullite hollow sphere with a gradient structure and a preparation method thereof, and belongs to the field of heat-insulating refractory materials. The preparation method comprises the following steps: firstly, high-alumina bauxite is beneficiated and classified and homogenized, then, according to a certain mass percentage, III-grade high-alumina bauxite, silica, mixed additives and an organic binder are uniformly mixed and granulated; taking spherical particles as cores, II-grade high-alumina bauxite and I-grade high-alumina bauxite are sequentially wrapped under the rotation of a granulator to obtain a non-homogeneous spherical particle blank body with a SiO2-rich interior; and finally, the corundum mullite hollow sphere with the gradient structure is obtained through high-temperature calcination. The refractory hollow sphere is designed with the gradient structure through the combined process of high-alumina bauxite classification and homogenization, coating forming and high-temperature calcination in-situ pore forming, the phase performance characteristics of corundum and mullite are fully utilized, and the refractory hollow sphere with the low thermal conductivity, the good corrosion resistance, the high use temperature and the excellent thermal shock resistance is developed.

A process for producing a supplementary cementitious material (SCM), comprising the steps of (i) providing a calciferous feedstock, (ii) subjecting the feedstock to size reduction under phase transition conditions 102 to produce a particulate material, (iii) reacting the material 109 to produce a crude product, and (iv) processing the crude product 111 to give SCM 114. Step (ii) may comprise atomisation or granulation, (iii) may comprise carbonation and (iv) may comprise thickening, dewatering, and / or drying. A system for carrying out the process, and a SCM produced by the process are defined. An atomisation process wherein molten calciferous feedstock is atomised and rapidly quenched to provide a particulate material, and the particulate product produced by the process are defined. A process for carbonising a calciferous feedstock slurry, wherein the slurry is treated using counter-current flow of CO2 rich gas through multiple parallel reactor tanks, and the system for carrying out the process are defined. A process for drying a product using heat recovery from an atomisation process, and a process for producing a SCM comprising carbonating molten slag calciferous feedstock, wherein machine learning is applied with sample analysis to determine the SCM composition and to control the reaction conditions are specified.

The invention belongs to the technical field of pelletizers, and discloses a fertilizer forming pelletizer which comprises a rack, a power unit and a pelletizing unit are arranged on the rack, a shell is fixed to the tail end of the pelletizing unit, a pelletizing cavity and a powder cavity are formed in the shell through a fixedly-arranged partition plate, a powder supplementing pipe is fixed to the powder cavity, and the power supplementing pipe is fixed to the power supplementing pipe. An air suction port and an air outlet are formed in the partition plate, one-way valves are fixed in the air suction port and the air outlet, the top of the granulation cavity is communicated with the top of the powder cavity through the air suction port, the bottom of the granulation cavity is communicated with the bottom of the powder cavity through the air outlet, a center hole is formed in the middle of the partition plate, and a diaphragm vibration unit is arranged in the center hole; the diaphragm vibration unit comprises an elastic membrane, a center plate and a vibration piece, the center plate is fixed to the center hole through the elastic membrane, and the fixedly-arranged vibration piece is used for driving the center plate to vibrate back and forth in the axis direction of the center plate; according to the invention, the possibility of adhesion between particles can be reduced.

The invention discloses a waste incineration fly ash innocent treatment method and system based on low-temperature plasma, and belongs to the technical field of dangerous solid waste treatment.The waste incineration fly ash innocent treatment method comprises the steps that fly ash and a silicon-aluminum-based conditioner are mixed and granulated and then placed in a low-temperature plasma reactor, and treatment is conducted with air as a discharge medium; high-energy electrons and active free radicals generated by plasmas are utilized to synchronously realize efficient decomposition and mineralization of dioxin organic pollutants in the fly ash and reduction and stable solidification of heavy metal ions; the treated tail gas containing the active substances is cyclically degraded through a cyclone separator, and solid products can be used as safe building material resources; according to the method, one-stop deep detoxification of two typical pollutants in the fly ash is realized, the treatment temperature is low, the energy consumption is low, secondary pollution is avoided, and an efficient solution is provided for safe treatment and value-added utilization of the waste incineration fly ash.

The invention discloses crushing equipment for waste biomass combustion heat supply, and relates to the technical field of waste biomass crushing. The shaking sieve mechanism, the cutting mechanism and the crushing roller mechanism are sequentially assembled on the rack from top to bottom in the waste material moving direction; the sieve shaking mechanism comprises a first support and a first box body fixed with the upper part of the first support; the stepped screening assembly is arranged in the first box body; and the eccentric vibration wheel assembly is arranged on the first box body. Impurity removal and separation, large-size shearing and crushing operation are sequentially conducted on waste, impurities are rapidly screened out, the purity of the waste is improved, and the large-size waste is pretreated, so that waste particles machined by the crushing roller mechanism can better meet the fine and uniform form required by the final purpose; therefore, stable control of subsequent procedures such as conveying, drying and granulation and unification of product quality are facilitated.

This invention relates to a drying granulator, comprising: a shell having a cylindrical shape, the shell having radially spaced inner and outer walls defining a heating space for containing a heating medium; a rotor including a plurality of blades projecting radially outward on its outer surface, the plurality of blades including: a first blade shaped to coat sludge onto an inner surface of the inner wall facing the rotor; a second blade shaped to facilitate mixing of sludge of different viscosities; a third blade shaped to scrape the dried sludge from the inner surface of the inner wall, causing it to detach and facilitating sludge granulation; and a fourth blade shaped to contact the granulated sludge with the inner surface of the inner wall, further drying the granulated sludge and controlling the particle size of the granulated sludge to a set size and shape.

The invention belongs to the technical field of metallurgical mineral pretreatment, and particularly discloses a preparation method of high-strength zinc concentrate particles. According to the method, a specific composite bonding system is adopted, high-strength green pellets are formed through high-speed shearing granulation and multi-stage particle size regulation and control, and complete solidification and efficient desulfurization of zinc concentrate particles are achieved in a low-temperature fluidized roasting process. The method effectively solves the problems of high binder addition amount, serious pulverization in the roasting process, large zinc grade loss and the like in the traditional granulation process.

The application relates to a swing granulator seven-star roller and a mounting structure thereof. The swing granulator seven-star roller and the mounting structure thereof comprise a seven-star roller body, the seven-star roller body is in a cylindrical working surface structure, seven convex granulation corners are uniformly arranged on the outer peripheral wall of the seven-star roller body, the working surfaces of the granulation corners are all arranged in arc structures, and the arc structures are matched with a screen of the swing granulator; a roller mounting mechanism, which comprises a rack, a bearing seat, a bearing arranged in the bearing seat and a rotating shaft penetrating through the bearing, the rotating shaft is connected with an end shaft of the seven-star roller body, the bearing seat is mounted on the rack, a material seepage discharge port is formed in the rack at the bottom of the bearing seat; and a sealing assembly, which is sleeved on the rotating shaft and located at the opening end of the bearing seat. The material can be more fully and uniformly extruded, the hardness of wet particles is effectively improved, the generation of fine powder after drying is reduced, the quality of granular products is improved, the dead angle residual of the material in the equipment is reduced, and the material waste is reduced.

The invention discloses a controlled-release potassium-magnesium fertilizer as well as a preparation method and application thereof, and relates to the technical field of controlled-release fertilizer production. Potassium magnesium crude salt recovered through salt lake carnallite flotation crystallization is used as a core raw material, high-roundness modified potassium magnesium salt composite particles are constructed through extrusion master batch forming, roller wet amplification, centrifugal polishing shaping and micropore filling and sealing, and the controlled-release potassium magnesium fertilizer is prepared through coating. The problems that potash fertilizer particles prepared through traditional extrusion granulation have many edges and corners and are not prone to film coating are solved through a multi-stage granulation process, secondary granulation is conducted through heterogeneous fine powder materials, surface micropores are filled, the surface smoothness of the particles is greatly improved, meanwhile, the influence of potassium ions on film forming is isolated, and the potassium fertilizer has the good application prospect. According to the finally prepared controlled-release potassium-magnesium fertilizer, a nutrient release curve is precisely regulated and controlled through the controlled-release film layer, double-nutrient continuous supply of crops with high potassium and high magnesium requirements is achieved, the potassium and magnesium deficiency symptoms of the crops are reduced, the crop quality is improved, and a core technical support is provided for high-value utilization of salt lake potassium ore resources and green quality improvement of the crops.

The invention discloses a construction method of a sports field adopting ultra-light odorless particles, and relates to the technical field of high polymer material processing.The construction method comprises the steps that raw materials are pretreated, and polyether polyol, a foaming agent, an amine catalyst, a tin catalyst and a foam stabilizer are mixed and stirred to prepare a foaming precursor; foaming and forming, namely pouring the precursor into a mold at high pressure, preserving heat and pressure, and foaming into a block material; crushing and granulating, namely crushing blocks, grading and screening to obtain particles of 1-10mm; mixing on site, and stirring and coating the glue and the particles according to the ratio of 1: 2.5; paving and compacting: paving the base layer with the material, and compacting to form an elastic base layer; surface layer spraying, wherein fine particles and waterproof color paste are mixed according to the ratio of 1: 1, sprayed and dried to form a wear-resistant surface layer; and marking and delivering, namely marking after the surface layer is dried, and delivering if the detection is qualified. The particles prepared by the method are super easy to process, and after construction, the field structure is compact, the performance is stable, the environmental protection property reaches the standard, the service life is long, the process controllability is high, large-scale production can be realized, and the construction requirements of various sports fields such as campuses, communities and professional venues are met.

The utility model discloses a dust pelletizing, recycling and dust removing device which comprises a dust removing mechanism used for removing dust in gas; the feeding mechanism is used for conveying dust, and a feeding port of the feeding mechanism is connected with a dust outlet of the dust removal mechanism; the granulating mechanism is used for pressing the dust into granules, and a feeding port of the granulating mechanism is connected with a discharging port of the feeding mechanism; the conveying mechanism is used for conveying and recycling particles pressed by the granulating mechanism, and a feeding port of the conveying mechanism is connected with a discharging port of the granulating mechanism; the exhaust mechanism is used for exhausting gas passing through the dust removal mechanism, and a gas inlet of the exhaust mechanism is connected with a gas outlet of the dust removal mechanism. The dust removal device provided by the utility model can be used for pressing collected dust into large-particle-size particles which are directly used as raw materials for recycling, so that reentrainment of dust is avoided, the dust does not need to be conveyed to other places through pneumatic conveying or dust suction and discharge tank trucks for additional treatment, the treatment mode is simple and efficient, and the dust removal device is particularly suitable for dust removal of remote transfer stations.

The invention provides a preparation method and application of sintering-free phosphorus-absorbing particles, and the preparation method comprises the following steps: (1) a mixing step: uniformly mixing a mixed material containing phosphate tailings, fly ash, slag powder and quick lime with an alkali activator solution under the stirring action to obtain a mixed slurry; (2) curing: injecting the mixed slurry into a mold, and demolding after vibration degassing and sealed curing to obtain a cured sample; (3) curing: curing the cured sample under the conditions of constant temperature and constant humidity to obtain a geopolymer sample; and (4) granulating: segmenting, crushing and screening the geopolymer sample to obtain the sintering-free phosphorus-absorbing particles. According to the method, a preparation process combining geopolymer synthesis and physical crushing is adopted, high-temperature sintering is not needed in the whole process, and the energy consumption and the production cost are remarkably reduced. Moreover, the method is simple in process, low in cost and low in energy consumption, and has a good application prospect.

The utility model discloses a wet shearing granulator which comprises a barrel body, a discharge pipe body and a sealing plate, a stirring cavity used for stirring materials is formed in the barrel, and a discharging opening is formed in the bottom of the inner wall of the barrel; a discharging channel is arranged in the discharging pipe body, and the feeding end of the discharging channel is communicated with the discharging port of the cylinder body. The sealing plate is arranged on the outer side of the barrel, a spray gun is arranged on the sealing plate, and the end, provided with a blowing opening, of the spray gun penetrates through the sealing plate and faces the discharging opening; the sealing plate has a sealing state and an opening state. According to the utility model, the spray gun is arranged on the sealing plate, and after wet and soft materials are discharged, residual materials on the discharge port are blown through the blowing port on the spray gun, so that the problems that dust flies, the subsequent granulation process is influenced, the labor intensity of personnel is increased and the like due to the fact that the discharge port and the sealing plate are not tightly sealed by the residual materials are solved.

The invention belongs to the technical field of light thermal insulation materials, and particularly relates to a preparation method of a high-strength gradient thermal insulation material, which comprises the following steps: S1, primary mixing granulation: mixing hollow silicon dioxide and alumina sol in proportion, and granulating into spherical particles with certain particle size by a granulator; s2, drying and presintering: drying and presintering the obtained spherical particles to enable the particles to have certain strength; s3, secondary mixing: mixing the base material aluminum source with the silicon source and the additive in proportion to obtain a premix; uniformly mixing the obtained spherical particles and the premix according to different proportions to obtain different mixtures; s4, spreading the obtained mixture according to a certain sequence, and performing compression molding to obtain a heat insulation material precursor; and S5, high-temperature sintering: performing high-temperature sintering on the obtained thermal insulation material precursor to obtain the high-strength gradient thermal insulation material. The problem of low strength of the thermal insulation material is effectively solved, and the application range of the thermal insulation material is widened.

This invention discloses a method for preparing anhydrous spherical calcium chloride, relating to the field of anhydrous spherical calcium chloride technology. The preparation method includes 1) raw material pretreatment; 2) premix preparation; 3) stepwise mixing and granulation; and 4) curing and drying. This invention solves the key problem of moisture absorption and crusting of anhydrous calcium chloride by utilizing industrial waste such as fly ash to construct a "skeleton-gel-pore" composite structure. The product has a several-fold longer anti-crusting time, more uniform and lasting moisture absorption, high particle strength, and very little dust. The raw material cost is low, and the reaction is controllable and easy to industrialize, achieving a balance between high performance, low cost, and green environmental protection.