155 results about "Saw dust" patented technology

A fireproof magnesium oxide board is prepared by mixing the following raw materials, the raw material names and weight parts are as follows: 80-100 parts of magnesium oxide; 20-30 parts of anhydrous magnesium chloride; 10-20 parts of modified expanded vermiculite foaming agent; 20-30 parts of aluminum silicate fiber; 5-10 parts of sawdust; 10-15 parts of fly ash; 8-12 parts of glass magnesium board crushed powder; 1.5-5 parts of non-woven fabric; 10-20 parts of water; wherein the modified expanded vermiculite is prepared by the following steps: (1) Vermiculite is incompletely expanded and calcined; (2) acrylic acid monomer, sodium hydroxide, acrylamide monomer, initiator potassium persulfate, crosslinking aid pentaerythritol polyglycidyl ether, incompletely expanded vermiculite, and water are taken, stirred evenly and ultrasonically dispersed to obtain a first reaction solution, which is placed in a reactor for reaction to obtain a gel material; (3) the gel material is preliminarily crushed and dried, and then further crushed in a ball mill to obtain a fire-resistant expanded vermiculite with water absorption performance.

The invention relates to the technical field of wastewater treatment, and discloses a multi-stage wastewater treatment device for wood production, which comprises a treatment tank, and further comprises a filter cartridge I and a filter cartridge II which are cylindrically arranged in the treatment tank, and the filter cartridge II is positioned in the filter cartridge I and is used for sequentially separating impurities in wastewater; the water outlet pipe is arranged at the bottom of the filter drum II and is used for guiding out the treated wastewater; the water inlet pipe is arranged at the bottom of the treatment tank. By adopting the filter cartridge I and the filter cartridge II, continuous multi-stage filtration from rough filtration to fine filtration is realized, saw dust, fibers and other impurities with different particle sizes are removed at one time, meanwhile, online self-cleaning is synchronously carried out, and rotary filtration and filter screen cleaning are synchronously carried out through motor driving; therefore, the problem that traditional filtering equipment must be frequently shut down and manually cleaned due to quick blockage of a filter screen is solved, continuous and uninterrupted efficient operation of the wastewater treatment process is ensured, and the overall treatment efficiency and production continuity are greatly improved.

The utility model discloses a rock wool product cutting dust removal device, and relates to the technical field of cutting dust removal. The device comprises a cutting table, a belt conveyor, a first dust collection type cutting machine, a first cutting base, a first waste residue pumping pipeline, a second waste residue pumping pipeline, a second dust collection type cutting machine, a second cutting base, a third waste residue pumping pipeline, a fourth waste residue pumping pipeline, a waste residue pumping main pipeline, a dust pumping fan and a waste residue collecting box. The interiors of the first cutting base and the second cutting base are both in a hollow state, a first cutting groove is formed in the first cutting base, and a second cutting groove is formed in the second cutting base; the two ends of the first cutting base are connected with the first waste residue pumping pipeline and the second waste residue pumping pipeline correspondingly, and the two ends of the second cutting base are connected with the third waste residue pumping pipeline and the fourth waste residue pumping pipeline correspondingly. The collecting effect of saw dust can be improved, the saw dust is effectively prevented from drifting around, and the cutting quality of rock wool boards is further improved.

The invention discloses a ground directional drilling goaf passing leaking stoppage method which comprises the steps that hole data of a goaf are obtained, and the hole data comprise the hole depth and the crack width; when the width of the crack is larger than 5 mm, a foundation plugging material is adopted for conducting foundation plugging on the hole of the goaf, and the foundation plugging material is an inert material and cement paste; judging whether basic plugging fails or not to obtain a first judgment result; if the first judgment result shows that the basic plugging fails, a flexible plugging material is adopted for conducting medium-term plugging on the holes in the goaf, and the flexible plugging material is a material formed by mixing hemp fiber, sawdust, soybeans and water. According to foundation plugging, a large channel is filled through particle bridging, a primary plugging layer is formed after cement paste is solidified, the flexible material can adapt to trace deformation of surrounding rock through deformation filling, and micro cracks of a foundation layer are plugged. Through graded gradient filling, the leaking stoppage effect can be greatly improved.

The invention discloses a stepped adjusting and cutting device for linear cutting equipment. The stepped adjusting and cutting device comprises a lower wiring groove roller, an upper wiring groove roller, a side rotating mechanism used for adjusting the state of the lower wiring groove roller and a platen. The device has the beneficial effects that the two lower wiring groove rollers are inclined downwards through the side rotating mechanism, the effect of forming an equal-height-difference stepped cutting structure for the distributed cutting lines is achieved, and a traditional horizontal equal-distance-distribution cutting line distribution mode is adjusted into a stepped equal-height-difference cutting line distribution mode; the effect of cutting one by one is achieved, the problem that a plurality of slice parts fall and collide at the same time is avoided, and operation reaction time difference is provided for follow-up implementation of ordered discharging; the saw dust wood frame is used for binding and fixing the bottom of the to-be-cut workpiece, the saw dust wood frame can be cut through the cutting line, the thoroughness of the cutting line cutting the bottom of the workpiece can be guaranteed, meanwhile, the stability of the remaining workpiece part in the cutting state can be maintained, and unnecessary cutting hindrance is reduced.

A chainsaw is provided, enabling to remove sawdust conveyed inside a main body efficiently, which has a main body including: a guide bar; a saw chain wound around the guide bar and the drive sprocket; a drive sprocket disposed behind the guide bar, having a rotation shaft in a right / left direction of the main body and rotated to move the saw chain along the guide bar; and a guide wall including an arcuate first wall along the drive sprocket with a predetermined gap from the saw chain and a second wall extended rearward via a connecting portion to the first wall, and when seen from the right / left direction, a angle between: a first direction along a vertical direction of the main body; and a second direction passing through the center of the rotation shaft and an apex of the connecting portion is between 0° and 30°.

The invention provides biomass fuel sourced from urban life manure residues and a preparation method and application thereof, and relates to the technical field of biomass fuel. The preparation method provided by the invention comprises the following steps: carrying out solid-liquid separation on municipal domestic manure residues and manure, and then turning and mixing the municipal domestic manure residues and manure with biomass particles to obtain a dried raw material with the water content of 8-12%; extruding and granulating the dried raw material to obtain the biomass fuel; wherein the biomass material of the biomass particles comprises one of saw dust and rice husk. According to the invention, the utilization efficiency of biomass energy can be effectively improved through resource utilization of urban living manure residues, and meanwhile, the water content and combustion performance can be effectively adjusted by mixing the manure with biomass particles.

The invention discloses a saline-alkali soil improver as well as a preparation method and a use method thereof. The saline-alkali soil improver is mainly prepared by mixing fly ash, dilute sulphuric acid, zeolite powder, sawdust, desulfurized gypsum / calcium phosphate, humic acid, a bio-organic fertilizer and a microbial fertilizer with water. The concentration of the dilute sulphuric acid is 1-3 mol / l; the saw dust does not comprise Chinese honeylocust tree saw dust and melia azedarach saw dust. The saline-alkali soil modifier is combined with irrigation and water conservancy engineering measures, crops are planted, the upper layer and the lower layer of saline-alkali soil jointly exert force, the concentration of harmful ions in the upper layer soil and the lower layer soil of the saline-alkali soil can be effectively reduced, the soil condition of the improved saline-alkali soil is close to the soil condition of a normal farmland, and the saline-alkali soil quality is improved. In addition, the saline-alkali soil improver can effectively improve the soil environment while improving the soil, and has important application value and significance compared with saline-alkali soil improvement technologies such as pure high polymer materials and the like.

The utility model discloses a cleaning head and cleaning equipment. The cleaning head comprises a shell; a cleaning member; the developing module is arranged on one side of the cleaning part and comprises a light-emitting part and a light beam processing part, the light beam processing part is used for receiving light emitted by the light-emitting part and guiding the light to a to-be-cleaned surface, the area is in a sector shape, the sector comprises a first edge and a second edge, the first edge is adjacent to the cleaning part, and the second edge is adjacent to the cleaning part; the second edge extends in the direction away from the cleaning piece, and the included angle C between the second edge and the front edge of the cleaning piece is larger than or equal to 140 degrees and smaller than or equal to 170 degrees. Therefore, by designing the cleaning head, a user can see dust in more areas, the illumination area of the light-emitting part is wide, the user can see dirt more clearly when cleaning the surface to be cleaned, the visual perception is better, the user experience is better, the user can see more dirty areas in the shortest time, the brain can quickly make cleaning action response, and the cleaning effect is better. The cleaning time is saved, and the cleaning efficiency of the user is improved.

The utility model discloses an agglomerated stone sawdust powder activating and drying device which comprises a spiral drying box, a spiral material conveying copper pipe is arranged in the spiral drying box, the feeding end of the spiral material conveying copper pipe is connected with a pressurizing pump in a penetrating mode, and the pressurizing pump is arranged in the spiral drying box and used for pressurizing and rapidly conveying materials. The agglomerated stone sawdust powder enters the spiral conveying copper pipe through the discharging box to be conveyed in a spiral conveying mode, and the agglomerated stone sawdust powder in the conveying process heats the spiral conveying copper pipe through high temperature emitted by the circular heating plate of a cylinder structure. The heating speed is high, the agglomerated stone sawdust powder is rapidly conveyed in a pressurizing mode, the agglomerated stone sawdust powder in spiral conveying is always heated and dried in a moving state, and therefore the agglomerated stone sawdust powder is evenly heated and dried in the moving process. Further, the agglomerated stone sawdust powder continuously moves, the moisture is reduced, and the problem that the agglomerated stone sawdust powder adheres to the inner wall of a pipeline or discharged materials are stacked and cannot be thoroughly dried is solved.

This application relates to the technical field of solid waste utilization for preparing metal adsorbents, and particularly relates to an aluminosilicate solid waste heavy metal adsorbent, its preparation method and application. By mass, the aluminosilicate solid waste heavy metal adsorbent comprises 30-50 parts of modified aluminosilicate solid waste, 20-40 parts of modified sawdust biochar and 1.2-1.6 parts of sodium alginate; the preparation method of the modified sawdust biochar includes: S1. Prepare a modified solution: dissolve catechol in an aqueous solution of 25% ethanol, and then add a composite solvent to obtain a modified solution; S2. Mix the sawdust biochar with the modified solution in a mass ratio of 1:15, stir magnetically at room temperature for 1 h, filter and dry to obtain the modified sawdust biochar.

The invention discloses an automatic sawing and packing machine for rubber raw material treatment, which comprises a fixed table, a main cutter head, an opening mechanism, a movable table and a first motor, a V-shaped stop block is arranged on the fixed table, the movable table is slidably connected to the fixed table, the main cutter head, the opening mechanism and the first motor are arranged on the movable table, and the first motor is arranged on the fixed table. A cutting edge is arranged on the edge of the main cutter head, the main cutter head is aligned to the protruding position of the V-shaped check block, the first motor drives the main cutter head to rotate, the opening mechanism comprises a friction block and an elastic telescopic rod, one end of the elastic telescopic rod is hinged to the movable table, and the other end of the elastic telescopic rod is hinged to the friction block; when the main cutter head saws off the rubber raw material bag, the moving table moves forwards, and the rubber raw material bag on the two sides of a saw seam is broken off outwards through the friction blocks. According to the automatic sawing and packaging machine for rubber raw material treatment, saw dust is reduced.

The invention relates to the technical field of firework production, and solves the problems that a firework inner barrel charging method in the market is troublesome in operation after uniform premixing and then charging, the dust concentration in the production process is relatively high, the mounting smoothness is low, a lot of residual powder is left in a charging area, and the detonation risk and the danger level of a production place are increased. The high-safety automatic filling production process for the combined firework inner barrels comprises the following steps in sequence: filling anti-blocking effect beads; separately filling a reducing agent and an oxidizing agent in a time-sharing manner; mixing in the cylinder: uniformly mixing the effect beads, the reducing agent and the oxidizing agent by adopting a high-speed rotating mechanical structure; and packaging is stable. The machine has the advantages that high-risk manual procedures which easily cause accidents are concentrated under an effective barrier and are completed through mechanical actions through automatic and mechanical bright bead filling, explosive filling, sawdust filling and sealing procedures, and the machine is small in dust, small in loss and high in safety coefficient.

This product is a portable toilet equipped with a bio-toilet that uses an agitator to mix feces, urine, etc., thrown into a treatment tank from a toilet bowl with sawdust for microbial decomposition, and is provided with three private rooms and a storeroom for storing sawdust, etc., and each private room may be equipped with, for example, a hand washing basin, a mirror, clothes hooks, and luggage storage space. This product utilizes a 20-foot container, and as shown in the reference diagram showing its usage, it may be placed on a device equipped with wheels, etc. so that it can be transported by trailer, etc.

1. Name of the product in this design: Biomass pellet mill. 2. Application of this design: To prepare biomass pellets by extruding biomass raw materials such as wood chips, bark, sawdust, straw, rice straw, corn stalks, and weeds. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Other situations requiring explanation: In the front view and the perspective view, point A is made of transparent material.

The utility model discloses a fruit tree peeling device for fruit tree planting, and belongs to the technical field of fruit tree planting. A fruit tree peeling device for fruit tree planting comprises a shell and further comprises a peeling knife installed on the shell, sawteeth are arranged on the knife back of the peeling knife, a driving part is arranged on the shell, and the driving part is used for driving the peeling knife to do reciprocating motion along the axis of the shell; by starting the servo motor, the peeling knife can be driven to do reciprocating motion, the cutting force of the peeling knife can be greatly improved, a worker can easily cut off bark, time and labor are saved, and then the fruit tree grafting and planting efficiency is improved; the peeling knife can be blown and cooled in the peeling process of a fruit tree or a branch, meanwhile, a worker can be assisted in cleaning saw dust and other impurities attached to the surface of the peeling knife, and the sharpness of the peeling knife can be kept.

To provide a hydrolysis acceleration method of cellulose for decreasing molecular weight of cellulose in an organic sludge and a food residue while suppressing the carbonization rate.SOLUTION: In a hydrolysis acceleration method of cellulose with a carbon rate not exceeding 50% by hydrolysis treatment of an organic sludge including a food residue by a super heated steam reaction at 200°C or under while maintaining a water content of around 50% in the presence of a blended reaction acceleration agent including a crushed powder having an average grain size of 10 mm±5 mm in length including saw dusts, wood waste chips, dry straw, chaff, branches, barks, wood chips, and dry plants as the main component, in which the organic sludge is subjected to a contact reaction with a super heated steam of 300°C or under in a reactor for hydrolysis at 200°C or under so as to decrease molecular weight to hemicellulose. The reactor is assembled with a ribbon blender formed by providing an inner blade 152 and an outer blade 153 around a main inertial axis. A counter flow stirring motion wherein a stirred product flows to the inside by the outer blade, thus strong collision repeatedly occurs while the stirred product flows to the outside by the inner blade to collide with a side case and moves to the outer blade repeatedly occurs.SELECTED DRAWING: Figure 3

The utility model discloses an electric saw for selecting branches of trees, which belongs to the field of electric tools and comprises a driving mechanism, a mounting plate is mounted on the surface of the driving mechanism, a protective box is fixedly connected to the upper surface of the mounting plate, an electric hand saw is fixedly connected to the surface of the protective box, and an adjusting mechanism is mounted on the upper surface of the protective box. Through cooperative use of the devices, through the arrangement of the driving mechanism, the electric hand saw, the rotating rod, the overturning plate, the guide plate, the pushing mechanism and other structures, before the electric hand saw is started, the protection plate is separated from the electric hand saw through the arrangement of the adjusting mechanism, and meanwhile through a driving motor, the electric hand saw is driven to rotate. The rotating rod drives the overturning plate and the pushing mechanism to rotate synchronously, so that the overturning plate is separated from the electric hand saw, the two guide plates are overturned through the arrangement of the pushing mechanism, and saw dust generated in the using process of the electric hand saw is blocked through the arrangement of the guide plates and the overturning plate.

The invention relates to a harmless treatment method for solid waste. The compound probiotic microbial agent comprises bacillus licheniformis, lactobacillus rimosii, lactobacillus plantarum, clostridium butyricum and saccharomycetes, the effective viable count is larger than or equal to 0.5 billion / mL, pig manure, corn straw and saw dust are mixed according to the mass ratio to obtain a compost raw material, the initial carbon-nitrogen ratio (C / N) is adjusted to be 25-35, the water content is adjusted to be 55-65%, and the compost raw material is fermented to obtain the compound probiotic microbial agent. And adding a composite probiotic inoculant accounting for 0.5-2.5% of the total mass into the compost raw material. Through probiotic combination and concentration optimization, the problems of decomposition and pollution of various ARGs are solved at the same time.

The utility model relates to the technical field of electric saws, and discloses an electric saw with a novel structure, which comprises a movable baffle plate, two mounting plates and a scrap baffle plate, the two mounting plates are positioned on the inner side of the movable baffle plate, and the movable baffle plate rotates relative to the mounting plates to adjust the inclination angle. The movable baffle plate is fixed on the mounting plate through the matching of a bolt A and a nut A which penetrate through the movable baffle plate and the mounting plate; the scrap blocking plate is used for blocking saw dust generated when the reciprocating type saw blade works on the front side of the electric saw shell and comprises an upper scrap blocking plate body arranged above the movable baffle in a rotatable and adjustable mode and a lower scrap blocking plate body buckled between the two mounting plates. The angle of the movable baffle can be adjusted, a special discharging notch is formed, operation convenience and flexibility are improved, saw dust and other chippings can be smoothly discharged, the interior of the electric saw is kept clean, the upper chipping blocking plate and the lower chipping blocking plate act together, the saw dust generated during cutting of the saw blade is effectively collected and blocked, and the saw dust is prevented from splashing all around.

The invention discloses a microbial fermentation bed for partridge chickens with green feet. According to the fermentation bed, 70% of conventional padding and 30% of corn straw combined matching padding are selected as the padding of the fermentation bed; the conventional padding is composed of peanut shells and saw dust according to the weight ratio of a fresh sample being 1: 1, and corn straw is smashed into short sections of 2-5 cm through a smashing machine. By using the fermentation bed technology, the growth performance and chicken quality of broilers can be improved; a micro-ecological balance environment is formed in the fermentation bed padding, so that the breeding of harmful microorganisms can be inhibited, and the intestinal health of the broiler chickens can be kept; meanwhile, the temperature in the fermentation bed house is not prone to rising and falling suddenly, stress is reduced, and the morbidity and mortality of broilers are obviously reduced; the broiler feeding benefit is improved.

The utility model provides a kind of slot saw device of servo adjustment, including saw trolley frame, the saw trolley frame one side is provided with slot saw dust hopper, the one end of slot saw is rotatably arranged in saw trolley frame, and front and back adjusting mechanism for the front and back movement of slot saw in slot saw dust hopper inside is installed on saw trolley frame, and front and back adjusting mechanism includes small saw servo drive motor, worm wheel, worm and first bearing, the output end of small saw servo drive motor drives worm rotation, worm and worm wheel transmission connection, and worm wheel is internally screw-threaded connection with saw core shaft, to drive saw core shaft in perpendicular to saw trolley frame direction moves, the utility model is integrated design by the parameterization input of operating panel operating panel and automatic execution system, and the degree of automation of slot saw device is improved, and the plate processing accuracy is improved, by setting servo motor-synchronous pulley-worm wheel worm composite transmission system realization displacement accurate control, realize slot saw front and back displacement accurate control.

The utility model provides a saw dust collecting bin which comprises a bin body, an installation chamber, a negative pressure chamber and a collecting chamber are sequentially arranged in the bin body from top to bottom, the installation chamber and the negative pressure chamber are separated through a transverse partition plate, a filter screen is installed between the negative pressure chamber and the collecting chamber, a vertical partition plate is fixedly installed in the collecting chamber, and the vertical partition plate is fixedly installed in the bin body. A rotating shaft penetrating through the filter screen is rotationally connected to the top of the middle of the vertical partition plate, a pair of scraping plates is fixed to the section, located in the collecting chamber, of the side wall of the rotating shaft, the collecting chamber is divided into two independent collecting cavities through the pair of scraping plates and the vertical partition plate, and a pair of sealing plates is fixed to the section, located in the negative pressure chamber, of the side wall of the rotating shaft; and the negative pressure chamber is divided into two independent negative pressure cavities by the pair of sealing plates. According to the collection bin, the mode that the pair of collection cavities are intermittently converted and collected is adopted, the filter screen can be automatically cleaned in the conversion process, manual cleaning through shutdown is not needed, the collected saw dust can be extruded into dust blocks, and centralized treatment is facilitated.

This application discloses a multifunctional fruit tree pruning saw, relating to the technical field of fruit tree pruning tools. It includes: a saw head comprising a protective housing, a working motor mounted on one side of the housing, and an output shaft of the working motor extending into the housing and mounting a saw blade; a handle portion, which is connected to the tail end of the housing; wherein, a hinge seat is also provided at the front end of the housing, and at least two arc-shaped steel bars are rotatably mounted on both sides of the hinge seat, and a collection box is also installed at the bottom of the arc-shaped steel bars for collecting sawdust falling during pruning. This application's rotatable arc-shaped steel bars and collection box can effectively collect sawdust generated during high-altitude pruning, improving the working environment and enhancing work comfort. The arc-shaped steel bars not only serve as a mounting bracket for the collection box but also act as a guide, guiding branches accurately to the saw blade, thereby reducing operational difficulty and improving cutting accuracy and efficiency.

The invention discloses a livestock farm fermentation bed padding and a method for producing fuel from the livestock farm fermentation bed padding, belongs to the technical field of fuel preparation, and aims to solve the problem that the ash content of related lignocellulose padding fuel is too high. Comprising the following components in parts by volume: 1.5-3 parts of sawdust; 1.5 to 3 parts of wood shavings; 1-3 parts of wood blocks; the livestock farm fermentation bed padding with the components is adopted, special strains for a fermentation bed are used for assisting in microbial fermentation and absorption of protein and crude fibers in animal waste, and decomposition fermentation is carried out; s2, the fermented padding is adopted for preparing the fuel, by means of the technical scheme, through deep coupling of fermentation and fuel preparation, livestock farm excrement treatment and machine-made charcoal production can be integrated into a single low-carbon process, and meanwhile the environmental protection benefit and the resource conversion efficiency are improved.

The invention provides a high-strength microporous mullite aggregate and a preparation method thereof. The mullite aggregate comprises the following raw materials in parts by mass: 20-35 parts of coarse carbon particles with the particle size of 4-3mm; 10-20 parts of fine carbon particles with a particle size of less than 3-1 mm; 5-15 parts of sawdust powder with a particle size of less than 0.2 mm; 1-10 parts of fly ash with a particle size of less than 0.074 mm; 20-30 parts of white mud with a particle size of less than 0.088 mm; 10-20 parts of dust collection powder with the particle size lower than 0.088 mm; 10-25 parts of sinking beads with a particle size of less than 0.15 mm; 1-2 parts of yellow dextrin; 20 to 40 parts of water glass; and 3-5 parts of a foaming agent. The high-strength microporous mullite aggregate has the characteristics of low volume density, high compressive strength, good thermal stability, stable chemical performance and the like.

The utility model provides a sawdust collecting assembly of a small circular sawing machine, and belongs to the technical field of sawing machines. The circular saw collecting device comprises a rack and a circular saw positioning support arranged below the rack, a circular saw is arranged on the circular saw positioning support, a feeding port is formed between the rack and the circular saw, a collecting shell is fixedly connected into the circular saw positioning support, and a feeding guide channel matched with the feeding port is arranged at the upper end of the collecting shell. Two adjacent collecting cloth bags are arranged in the collecting shell, a collecting inlet and a collecting outlet are formed in the upper end and the lower end of each collecting cloth bag respectively, an air suction device is arranged between each collecting cloth bag and the collecting shell, a collecting chamber is arranged at the bottom of the collecting shell, and a cloth bag vibrating mechanism capable of enabling the collecting cloth bags to vibrate is further arranged in the collecting shell. Sawdust can enter the collecting shell to be settled and collected, so that the sawdust is prevented from influencing normal operation of a machine tool and scattering on the ground, and the sawdust is convenient to clean; and the collection cloth bag in the collection shell is not blocked, and the settling collection of the saw dust can be accelerated.

The invention discloses a catechol-manganese dioxide synergistic directional humification pig manure aerobic composting nitrogen conservation method. Sawdust, straws or rice hulls are used as a carbon-rich bulking agent, and a modified carrier which is mildly oxidized and anchored with gamma-MnO2 is preferably selected; catechol is added in the mixing stage, and the active MnO2 is added in a segmented manner in the initial stage of composting; in an initial reaction window from weak acid to neutrality and moderate ventilation, oxidative condensation of catechol and nitrogen-containing organic matters is promoted, and then curing is carried out until a maturation criterion is reached; according to the method, ammonification and dissipation are inhibited from the source, the fixation and humification degree of nitrogen in an organic combination state is improved, peculiar smell is reduced, the stability and uniformity of a finished product are improved, and the method is suitable for resourceful treatment of livestock and poultry manure.

The utility model relates to the technical field of neodymium iron boron production, and discloses flaky material dehydration equipment for neodymium iron boron production, which comprises a dehydration treatment bin, a sawdust dehydration mechanism is arranged on the dehydration treatment bin, and a dust falling mechanism is arranged on the outer wall of the dehydration treatment bin. The sawdust dewatering mechanism comprises a base, a rotating seat, a stepping motor, a connecting seat and a connecting rod. Through the design of the dehydration treatment bin, an operator can add dry saw dust and neodymium magnet flaky materials into an inner cavity of the dehydration treatment bin at the same time, through the design of the stepping motor, the rotating base can be driven to rotate, meanwhile, the stirring fins are driven to rotate, and the saw dust and the neodymium magnet flaky materials are turned around the middle table; according to the method, sawdust is added into the neodymium magnet sheet-shaped material, so that the sawdust fully absorbs moisture on the surface of the neodymium magnet sheet-shaped material, then the neodymium magnet sheet-shaped material is screened, dehydration treatment is completed, the problem that dehydration is conducted in a drying or airing mode, and consumed time is long is solved, and the timeliness of neodymium magnet sheet-shaped material processing is improved.

The application relates to the technical field of building materials, and discloses a preparation method of a red mud-based foam concrete, which comprises the following steps: adjusting the water content of red mud; adding sawdust and stirring; then adding lime powder and stirring; then introducing industrial waste gas; then immersing ceramic sand particles in the mixture; mixing water and cement uniformly, adding a foaming agent to foam, and obtaining a foaming liquid; adding cement clinker, limestone powder, gypsum whiskers and auxiliary cementing materials into the mixture liquid in which the ceramic sand particles are immersed, and stirring uniformly; then adding the foaming liquid into the mixture liquid, and continuing to stir, so that the red mud-based foam concrete is obtained. In the application, the red mud is used in a wet state, the water in the red mud is fully utilized, and the red mud is prevented from being dried; lime powder is added into the red mud, and industrial waste gas containing a large amount of CO2, SO2, NO X , etc. is introduced, so that calcium carbonate, calcium sulfate, calcium nitrate and other nano particles are formed on the surface of red mud particles, and the activity of the red mud is improved.