1733 results about "Granulation" patented technology

The invention relates to the technical field of pelletizers, and discloses a sodium alginate powder pelletizer which comprises a shell, a feeding mechanism, a pelletizing structure and a driving mechanism are arranged in the shell, the feeding mechanism feeds powder materials to the pelletizing structure, the pelletizing structure comprises a functional disc, a displacement rotary disc and a discharging mechanism, the displacement rotary disc is rotationally arranged between the functional disc and the discharging mechanism, and the driving mechanism drives the functional disc to rotate. A displacement table and an impact mechanism are arranged in the shell, the driving mechanism drives the displacement table and the impact mechanism to move up and down at the axis of the granulation structure, the displacement table drives the displacement turntable to rotate, and the impact mechanism impacts the powder into granules. Through cooperation of the functional disc, the displacement rotary disc and the abutting plate of the granulation structure, quantitative feeding, impact forming and rapid discharging are synchronously carried out, the granulation efficiency is improved, the impact forming function is achieved through the impact mechanism, and formed particles are more compact.

The invention discloses a rapid culture method of aerobic granular sludge, and belongs to the technical field of sewage treatment. According to the invention, pharmaceutical factory sludge is used as a raw material to prepare pharmaceutical factory sludge biochar; an SBR reactor is constructed and operates in a water inlet-anoxic-aeration-precipitation-drainage mode, and pharmaceutical factory sludge biochar is added in the sludge inoculation process to promote rapid formation of system particles and stable operation. According to the method disclosed by the invention, the mature aerobic granular sludge with the capabilities of removing organic matters and synchronously denitrifying can be obtained by culturing for 30 days on average, so that the granulation process of the sludge is effectively improved, the forming time of the aerobic granular sludge is remarkably shortened, and the aerobic granular sludge has higher long-term operation stability.

A sulfide solid electrolyte, which is able to adjust the morphology unavailable traditionally, or is readily adjusted so as to have a desired morphology, the sulfide solid electrolyte having a volume-based average particle diameter measured by laser diffraction particle size distribution measurement of 3 μm or more and a specific surface area measured by the BET method of 20 m2 / g or more; and a method of treating a sulfide solid electrolyte including the sulfide solid electrolyte being subjected to at least one mechanical treatment selected from disintegration and granulation.

The invention relates to a preparation method of a low-cost high-dosage phosphogypsum-based aggregate, and belongs to the technical field of artificial aggregate building materials. The invention aims to solve the problems of low mixing amount, high cost and low strength of the existing ardealite-based aggregate. The preparation method comprises the following steps: mixing ardealite powder, waste residue powder, namely S95 granulated blast-furnace slag powder and red mud, and inorganic cementing materials, namely PO42.5 cement and sulphoaluminate cement in proportion, granulating by a granulator, and curing to prepare ardealite-based aggregate with the particle size of 4.75-19 mm; the method is low in cost and large in phosphogypsum mixing amount, the prepared aggregate is high in strength, when the aggregate is used in concrete, consumption of natural aggregate and the concrete preparation cost are remarkably reduced, the environmental problem caused by accumulation of a large amount of phosphogypsum is effectively solved, and the method has important significance on environmental protection and economic development; the process flow is simple, industrial production is easy, a new thought is provided for high-value utilization of ardealite resources, and the method has a profound influence on promotion of circular economy and sustainable development.

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 discloses a preparation method and application of a full-particle-size steel slag gradient carbonized artificial aggregate suitable for an asphalt ultrathin wearing layer, relates to a preparation method and application of an artificial aggregate, and aims to solve the technical problems that the strength of the existing carbonized steel slag aggregate is low, and multi-element solid waste resources cannot be comprehensively utilized. The method comprises the following steps: carrying out crushing, magnetic separation and screening on steel slag to obtain particles with different particle size grades; and sequentially carrying out pre-curing, granulation curing, pre-curing and post-curing treatment on each grade of particles to obtain the full-particle-size steel slag gradient carbonization artificial aggregate. The average carbon fixation amount of the aggregate is 12.4%, the average free calcium oxide content is 0.32%, the average compressive strength is 54.32 MPa, and the volume expansion rate is 0.32% when the aggregate is kept at the temperature of 60 DEG C for 5 days. When the aggregate is used for preparing an ultrathin wearing layer SMA-10 type asphalt mixture, the dynamic stability is 13285 times / mm, the immersion Marshall is 96.5%, and the anti-skid BPN value is 0.76. The method can be used in highway fields.

The invention discloses a method for controlling sludge bulking and realizing sludge granulation by using iron-carbon micro powder. The method comprises the following steps: crushing and grinding iron-carbon particles, and screening to obtain iron-carbon micro powder with the particle size of 50-200 microns; adding the iron-carbon micro powder into the expanded activated sludge system according to the adding amount of 0.5-5.0 kg / m < 3 >; and after addition, the sludge bulking phenomenon is rapidly controlled, and the sludge settling performance is obviously improved. Besides, the iron-carbon micro powder is used as a crystal nucleus, and the iron-carbon powder plays a micro-electrolysis role, so that the formation of the aerobic granular sludge is promoted, and meanwhile, the pollutant removal performance of the system is improved. The problem of sludge bulking in wastewater can be effectively solved, and the aerobic granular sludge with efficient treatment performance can be cultured.

The invention discloses an NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body and a preparation method thereof, the chemical general formula of the NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body is (1-x) Sr0. 5Zr2 (PO4) 3-x (Ln1 / n) PO4, x represents molar percentage, the value range is 0.1-0.9, x represents molar percentage, and the value range is 0.1-0.9. The NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body is NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body. N represents the number of element types of Ln lattice sites in the high-entropy (Ln1 / n) PO4 monazite type, and n is an integer and is larger than or equal to 5 and smaller than or equal to 7; the Ln element types comprise La, Nd, Sm, Eu, Gd, Ho, Er, Sr0. 5Zr2 (PO4) 3 and (Ln1 / n) PO4, and the molar ratio of the Ln element types to the Sr0. 5Zr2 (PO4) 3 to the (Ln1 / n) PO4 can be freely regulated and controlled. The NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body adopts an in-situ preparation process, and integration of crystal phase synthesis and sintering densification can be realized. The preparation method comprises the following steps: uniformly mixing the raw materials, pretreating, adding a sintering aid, mixing again, granulating and aging the obtained powder, molding, removing plastic, and sintering to obtain the NZP-high-entropy (Ln1 / n) PO4 monazite type composite ceramic solidified body. The preparation process disclosed by the invention has the advantages of flexible composition design, capability of simultaneously curing various fission products and (sub) actinide series nuclides, short preparation period, low production energy consumption, high product compactness and the like.

The invention provides a metal magnetic powder core production process capable of utilizing waste materials, belongs to the technical field of metal magnetic powder cores, and solves the technical problem that metal waste materials cannot be directly utilized to produce metal magnetic powder cores in an existing metal magnetic powder core production process. The method comprises the following steps: smelting an alloy; pulverizing the waste materials; adding materials and preparing powder; insulating coating; and pressing and annealing. According to the metal magnetic powder core machining device, mechanical waste materials are smelted and crushed, the waste materials can be directly utilized for metal magnetic powder core machining, compared with existing chemical cleaning, large-scale popularization and utilization are facilitated, the leakage hole is formed in the bottom of the smelting furnace, and under the action of the rotating plate rotationally arranged at the bottom of the leakage hole, the metal magnetic powder core machining efficiency is improved. The smelting furnace can directly smelt the magnetic metal waste through the cooling box, granulation is conducted through the rotating plate, the recycling effect of the waste is ensured, and the screen is arranged in the cooling box to collect metal particles.

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 discloses a wet mixing granulator and a working method thereof, and relates to the technical field of wet mixing granulators, the wet mixing granulator comprises a bottom plate and a mixing barrel, a cutting mechanism is fixedly mounted on the top end face of the bottom plate, a coaxial reverse rotating mechanism is fixedly mounted on the top end face of the bottom plate, and a driving mechanism is fixedly arranged on the side face of the cutting mechanism; a discharging mechanism is fixedly arranged on the side surface of the mixing barrel. Under the action of gravity, a mounting disc drives a rotating rod to move downwards, the tooth surface of a lower fluted disc is meshed with a lower gear, then the lower fluted disc is driven to rotate, an impeller is driven to rotate, powder accumulated above the mounting disc is scattered to the barrel wall, at the moment, the weight is reduced, a reset spring pushes the rotating rod to reset, the impeller stops rotating, and the operation is repeated; the powder granulation efficiency of the device can be improved, the powder utilization rate of the device is improved, and the problems of powder accumulation and powder caking in the background art are solved.

To provide a granulation system which granulates a granulation target material containing at least one of an alkali metal or an alkaline earth metal, as well as a production method for granulated materials.SOLUTION: The present invention provides a granulation system which granulates a granulation target material 40 containing at least one of an alkali metal or an alkaline earth metal, where the granulation system is equipped with a first solution addition device 3 for adding a carbon dioxide-dissolved solution 51 to the granulation target material 40.SELECTED DRAWING: Figure 1

The invention discloses a preparation method of a gallium and zirconium co-doped zinc oxide target material, and relates to the technical field of target materials, the preparation method comprises the following steps: S1, uniformly mixing zirconium oxide, gallium oxide, water and a dispersing agent, and grinding to obtain slurry I; s2, uniformly mixing zinc oxide, water and a dispersing agent, adding the slurry I, uniformly mixing, adding a binder and a plasticizer, uniformly mixing, and grinding to obtain slurry II; s3, performing spray drying and granulation on the slurry II, and sieving to obtain granular powder; s4, the granular powder is subjected to hydraulic pressure and cold isostatic pressing forming, and a plain blank is obtained; and S5, sintering the blank, and cooling to obtain the gallium-zirconium co-doped zinc oxide target material. The gallium and zirconium co-doped zinc oxide target material prepared by the preparation method disclosed by the invention has relatively high relative density and relatively low resistivity; after magnetron sputtering, the obtained film has good electrical properties.

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 discloses an anaerobic ammonia oxidation sludge reinforced granulation and retention device and method, and belongs to the field of biological denitrification devices. The main body reactor sequentially comprises a sludge collection area, an internal circulation reaction area, a separation precipitation area and a gas collection area from bottom to top, anaerobic ammoxidation sludge is filled in the internal circulation reaction area, and a screen is arranged between the sludge collection area and the internal circulation reaction area. A central partition plate is arranged in the internal circulation reaction area in the axis direction of the main body reactor and divides the internal circulation reaction area into an upper circulation reaction chamber and a lower circulation reaction chamber. A sludge backflow inclined plate structure is arranged between the internal circulation reaction zone and the separation precipitation zone, and the sludge backflow inclined plate structure inclines from the upper circulation reaction chamber to the lower circulation reaction chamber. The sludge collection port of the sludge collection area returns the separated sludge with smaller particle size to the internal circulation reaction area through a pipeline, and the gas collection port of the gas collection area returns produced gas to the internal circulation reaction area through a pipeline. The device is provided with function partitions and an inclined plate structure, sludge backflow and collection are enhanced, and the sludge retention performance is improved.

The utility model discloses a veterinary drug granulator, which relates to the technical field of granulators, and comprises a rotary granulator consisting of a main case, a driving case, a blanking hopper, a pressing knife and a grinding knife, and a granulation assembly, the granulation assembly comprises a granulation unit and an adjusting unit; the granulation unit is used for realizing granulation of particles with different particle sizes; and the adjusting unit is used for realizing adjustment and self-locking of the granulating unit. According to the utility model, the granulation assembly is arranged, and the dislocation degree of the meshes of the rotating mesh cylinder and the meshes of the fixed mesh cylinder is adjusted, so that the size of a gap channel formed by the two meshes can be changed, the size of discharged particles can be adjusted, and compared with the traditional operation mode of replacing the mesh cylinder, the machine does not need to be stopped for operation, and the operation is more convenient.

The invention discloses a multi-cluster interlayer / in-fracture temporary plugging diversion fracturing process and a product preparation method, and particularly relates to the technical field of petroleum and natural gas exploitation, the fracturing process comprises the steps of dividing fracturing sections according to the physical property of a horizontal section reservoir of a coal-bed gas well, monitoring and automatically adjusting parameters during drifting, injecting prepad fluid to form a main fracture, and injecting sand adding fluid in a stepped mode. Preparing and injecting a temporary plugging material, injecting prepad fluid again to form a new crack, injecting sand-adding fluid into the new crack, replacing the sand-carrying fluid with clear water after fracturing, discharging the fluid and monitoring. The preparation method of the temporary plugging material comprises the steps of raw material mixing, extrusion granulation, drying, secondary extrusion granulation and the like, and the performance of the temporary plugging material is ensured through the measures of a specially designed screw structure, accurate control of temperature and humidity, addition of an auxiliary agent and the like. According to the method, the longitudinal crack coverage rate and the oil and gas recovery rate are increased, accurate control is achieved, the formation damage rate and the accident rate are reduced, it is ensured that the quality of the temporary plugging material is stable, and the formation permeability recovery rate is increased.

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 relates to the field of building materials, and discloses an artificial lightweight aggregate with industrial waste alkali as an alkali activator and a preparation method thereof.The artificial lightweight aggregate is prepared from, by weight, 30-40 parts of F-class fly ash, 30-40 parts of S95-grade mineral powder, 10-20 parts of zeolite powder, 5-15 parts of sodium silicate or potassium silicate, 5-10 parts of industrial waste alkali and 0-20 parts of water; the preparation method comprises the following steps: weighing the raw materials in proportion, mechanically stirring the raw materials for several stages, granulating the mixture in a rotary table or a cylindrical rotary drum, spraying water in an atomization manner until the particle diameter reaches 18-22 mm, and finally curing in a natural environment to prepare the lightweight aggregate. According to the invention, the resource utilization of the industrial waste alkali is realized, the dependence of natural aggregate is reduced, the preparation process is simple, the product performance is excellent, and the economic and environment-friendly benefits are remarkable.

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 invention provides a nucleation granulation treatment method and treatment system for incineration fly ash and flue gas, and belongs to the technical field of incineration waste treatment. The treatment method comprises the following steps that solid particles in incineration flue gas are removed, CO2 in the incineration flue gas is enriched, and CO2-rich waste gas is obtained; metal ions in the incineration fly ash are leached out through an amphoteric electrolyte solution, solid-liquid separation is conducted, and leaching liquid containing the metal ions and purified fly ash are obtained; and in the presence of nucleation granulation seed crystals, the CO2-rich waste gas is introduced into the leachate for a reaction, and carbonate granulation bodies, a regenerated ampholyte solution and tail gas are obtained. The treatment method and system provided by the invention are based on a nucleation granulation technology, and can simultaneously realize mineralization fixation of CO2 in incineration flue gas, removal and granulation recovery of metal ions in incineration fly ash, and metal dissolution-mineralization circulation.

The utility model discloses a polypropylene granulation unit additive feeding powder closed recovery system, which is characterized by comprising a breathing stock bin, an anti-static filter for filtering powder in ascending air flow is arranged in the breathing stock bin, the breathing stock bin is connected with a recovery tank through a pipeline, and the recovery tank is connected with the breathing stock bin through a pipeline. The recovery tank is communicated with an inlet line of a granulator hopper, so that recovered powder and powder fed into the granulator hopper by the system are synchronously processed and granulated; the breathing stock bin and the anti-static filter in the breathing stock bin are arranged, dust and powder brought out by rising hot airflow in the balance pipe and rising airflow of the breathing stock bin are filtered and recycled, the recycled powder is concentrated in the recycling tank, pollution can be controlled, cost and consumption can be reduced, and solid waste is reduced.

The utility model discloses a granulator for fertilizer processing, and relates to the technical field of fertilizer granulation, the granulator comprises a machine shell and a granulation mechanism arranged above the machine shell, the side wall of the machine shell is provided with a sorting mechanism communicated with the granulation mechanism, the sorting mechanism is used for separating powdery fertilizer from granular fertilizer, and the sorting mechanism is used for separating the powdery fertilizer from the granular fertilizer. The sorting mechanism comprises a discharging nozzle fixed to the side wall of the machine shell, a filtering hole used for filtering the powdery fertilizer is fixedly formed in the discharging nozzle, a material collecting channel used for collecting the powdery fertilizer is arranged between the filtering hole and the discharging nozzle, and a stirring assembly is arranged in the filtering hole. The raw materials extruded by the granulation mechanism can be conveyed into the discharging cover to be screened and processed, and the screened powdery raw materials and granular raw materials are independently discharged, so that not only is the convenience of collecting the formed granular fertilizer improved, but also secondary processing is not needed, and the working efficiency is improved.

The invention belongs to the technical field of compound fertilizer production, and particularly relates to a high tower granulation compound fertilizer receiving device which comprises a receiving barrel, a supporting frame is fixedly installed on the outer wall of the lower end of the receiving barrel, a conveyor is arranged on the lower side of the receiving barrel, and a receiving box is placed on the conveyor; the device further comprises a bottom buffering and cooling mechanism, an auxiliary discharging mechanism, a static electricity eliminating mechanism, a discharging auxiliary mechanism, an in-place triggering mechanism, an automatic collection quantity counting mechanism and a PLC. In the receiving process of compound fertilizer granulation, air supply buffer can be formed at the bottom, so that the final falling speed of particles is greatly reduced, the impact force between the particles and the receiving barrel is reduced, and the situation that the particles fall from a high position in the receiving process of compound fertilizer high-tower granulation is effectively avoided; and the condition that particles are easily broken in the process of colliding with the material receiving device and conveying in the material receiving device is avoided, so that the material receiving quality is ensured.

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 preparation method of magnesium-calcium refractory aggregate with a core-shell structure, which comprises the following steps: granulating dolomite powder to form core particles, and uniformly adhering magnesium source powder to the core particles to form precursor particles with a double-layer structure; the adding amount of the magnesium source powder is controlled according to the mass ratio of the content of MgO in the magnesium source powder to the content of MgCa (CO3) 2 in the dolomite powder being (5-30): 100; and finally, heating and sintering the dried product of the precursor particles at the heating rate of 5 DEG C / min, and preserving heat to obtain the magnesium-calcium refractory aggregate with the core-shell structure. The method has the advantages of easily available raw materials and low production cost; the process is simple and suitable for large-scale production; the product is high in hydration resistance, high in refractoriness, excellent in slag corrosion resistance and wide in market prospect.

The invention discloses a continuous production method of pellet feed, and relates to the technical field of industrial automation control. The method comprises the following steps: creating a modulation control function and a granulation control function based on fixed parameters and process parameters, adjusting inlet steam flow according to the modulation control function so as to adjust the moisture content of an intermediate material, and adjusting the rotating speed of a die roller according to the granulation control function so as to adjust the hardness of a finished product. The hardness of a finished product is monitored in real time, an equipment insensitive area is predicted, when the equipment insensitive area is larger than a preset value, the inertia response process of hardening and tempering equipment or granulation equipment is extracted, and a control pole is calculated according to the inertia response process. If the control pole of the modulation equipment or the granulation equipment is shifted, the insensitive area of the equipment is optimized by adjusting the hardening and tempering process parameters or the granulation process parameters, and it is guaranteed that the system rapidly responds to the characteristic change of the raw materials. Through collaborative optimization of a control mechanism and parameters, the product quality stability under different raw material ratios is effectively improved, and meanwhile production fluctuation caused by equipment inertia is reduced.

To provide a method for promoting granulation of anaerobic sludge.SOLUTION: A method for promoting granulation of anaerobic sludge includes adding magnetite to the anaerobic sludge in wastewater at a weight ratio (concentration ratio) of 1 / 30 or more and 1 / 5 or less.SELECTED DRAWING: Figure 1

The present invention discloses a method for preparing an acidic soil conditioner from mine waste stone powder, as well as its product and application. The preparation method includes: S1: mixing the mine waste stone powder with an adhesive, granulating and post-treating to obtain stone powder particles; S2: placing waste shells and aquatic product leftovers in an acidic solution, standing for activation, washing to neutrality and then drying for standby; S3: performing high-temperature carbonization and expansion treatment on the product dried in step S2 in an anoxic or oxygen-free environment to obtain biochar; S4: uniformly mixing the stone powder particles prepared in step S1, the biochar prepared in step S3, waste shells, livestock manure, potassium humate and auxin to obtain an acidic soil conditioner. The preparation method disclosed by the present invention uses mine waste stone powder, waste shells and aquatic product leftovers as raw materials, which can not only effectively improve soil problems, solve the problem of waste of waste resources, turn waste into treasure, but also will not cause secondary harm to the soil environment.

The utility model relates to the technical field of granulation equipment, and discloses helical ribbon type high-temperature coating granulation equipment which comprises a main body mechanism and a stirring and heating mechanism, the stirring and heating mechanism is located above the main body mechanism, and the main body mechanism comprises an equipment body, a discharging pipe, a discharging pipe, a first protective cover and a mounting frame. The discharging pipe is fixedly mounted at the lower end of the equipment body, the discharging pipe is fixedly mounted at the lower end of the discharging pipe, the first protective cover is fixedly mounted at the right end of the discharging pipe, the mounting frame is fixedly mounted at the inner end of the first protective cover, and the main body mechanism further comprises a rotating motor, a rotating shaft and a helical ribbon discharging roller. According to the helical ribbon type high-temperature coating granulation equipment, through the installation of the main body mechanism, the discharge capacity of the helical ribbon type high-temperature coating granulation equipment is improved, in the actual use process, the granulated materials can be effectively discharged in a helical manner, so that the materials can be discharged at a constant speed, and the use efficiency of the helical ribbon type high-temperature coating granulation equipment is improved.