100 results about "Congelation" patented technology

The invention discloses a method for preparing porous ceramics with a directive structure by a freeze drying method, which is a forming method for directly obtaining the porous ceramics by using congelation of ceramic slurry and decompression, drying and removal of impurities. Compared with other porous preparation technologies, the method is a method capable of preparing porous materials with high directing property, high porosity and complex shape, does not add a large quantity of organic pore forming materials, and is an environment-friendly technology. The main characteristic of the method is to control a porous structure by using the action of the medium solidifying process on ceramic particles. The porous ceramic materials are prepared by adding 0.5 to 5 grams of ammonium polyacrylate, 20 to 100 milliliters of deionized water and 0.5 to 5 milliliters of polyvinyl alcohol into 100 grams of alpha-alumina.

A Preparation method of probiotics-fermented fruit and vegetable jam ice cream belongs to the technical field of cold drinks, and is characterized in that the method comprises the following steps: firstly performing fermentation by using high-activity probiotics special for fruit and vegetable fermentation to prepare probiotics-fermented fruit and vegetable raw pulp, then preparing common ice cream according to a traditional method, adding the probiotics-fermented fruit and vegetable raw pulp which reaches the fermentation end point, but is not sterilized, and has an amount of 5-50% of the weight of the ice cream raw material in the aging phase of the common ice cream, then stirring, and performing congelation, puffing, and filling to prepare the probiotics-fermented fruit and vegetable jam ice cream containing active probiotics. The probiotics-fermented fruit and vegetable jam ice cream has much better local flavor, taste, and nutritional functions then traditional ice cream, has lower production cost than common probiotics ice cream, and has an active probiotics number of up to 107 cfu / g-108 cfu / g.

The invention discloses an automatic energy storing high-pressure liquid injecting CO2 phase change pulse coal and rock body cracking method. Liquid state CO2 enters a high-pressure liquid injecting cylinder and a phase change chamber in the mode that the liquid state CO2 is injected into a high-pressure liquid storing temperature control tank, the liquid state CO2 in the phase change chamber is heated, the phase change pressure is increased, and gaseous CO2 enters the energy storing chamber to be subjected to automatic energy storing and a coal rock cracking chamber to be cracked; and when the pressure of the CO2 gas in the phase change chamber is decreased, the high-pressure CO2 gas enters the high-pressure liquid injecting cylinder to push a piston to expel the remaining CO2 gas, and enters the coal rock cracking chamber to be subjected to second-time cracking, the circulation of liquid injection, oil bath heating, phase change, energy storing and cracking is repeated, and continuous pulse high pressure flow jetting cracking is realized. According to the method, continuous pulse high pressure flow jetting cracking is realized, the time of cracking action is prolonged, the range of cracking action is expanded, the cracking effect is improved, and the method is suitable for quick and efficient cracking of solid materials such as coal, rock, concrete, soil and congelation.

If the ambient temperature of a pressure volute measured by a temperature sensor exceeds 0° C., a compressor is instantly started at normal operation. If the temperature of the pressure volute measured by the temperature sensor is 0° C. or lower, there is a possibility that a rotary vane may be adhered to the pressure volute due to a congelation. Therefore, vibration along the axial direction is given to the rotary shaft by way of an axial magnetic bearing. If the vibration amplitude of the thus given vibration exceeds a predetermined value, the compressor is started at normal operation after idle operation. On the other hand, if the vibration amplitude is lower than a predetermined value, it is determined that the thus given vibration is unable to eliminate the adhesion of the rotary vane due to the congelation, and the heater is actuated to heat the pressure volute only for a predetermined time. Thereafter, the ambient temperature is detected again, and if the ambient temperature exceeds 0° C., the compressor is started,

The invention discloses a stirring shaft of a hard ice cream machine. The stirring shaft comprises a central spindle, stirring blades and a bracket connecting the central spindle and the stirring blades. An outer edge of each stirring blade is provided with at least a positioning groove for installing wiper blades; a wiper blade comprises a cutting edge and is capable of sliding in a preset length along a radial direction of the stirring shaft. Because the wiper blades have a cutting edge structure, when the stirring shaft operates, cutting action on a freezing material layer on an inner wall of a congelation tank is enhanced, thereby improving the heat transfer speed inside and outside the congelation tank, and reducing load of a motor.

The invention discloses a method for preparing polyurethane rubber granule mixture for pavement self-stress icebreaking, and relates to rubber mixture. The method comprises the steps of firstly, mixing various grain sizes of gravels and rubber particles for 60s at room temperature, obtaining gravel and rubber particle mixture, adding bi-component polyurethane glue which is modulated by a component A and a component B mixed for 120s at room temperature, mixing for 120s at room temperature, obtaining mixture of the gravel and rubber particles and the polyurethane glue; adding mineral powder to mix for 60s at room temperature, and preparing the polyurethane rubber granule mixture for pavement self-stress icebreaking. The mixed pavement material generates large compressive deformation in use, resulting in that the tensile stress and the shear stress inside an ice layer are obviously increased, so that the ice layer cracks. The ice layer is damaged under reciprocal action of vehicle tires, so as to overcome the problem that accumulated snow and frozen ice on the pavement cannot be effectively solved in the pavement paving material of inhibiting congelation in the prior art and the defects of poor pavement performance, low durability and non-environmental performance.

The invention provides a congelation-resistant cable insulating coating. The congelation-resistant cable insulating coating consists of modified epoxy resin, an aluminium nitride mixture, a coupling agent, a curing agent and a curing accelerator, wherein the epoxy resin is modified by a highly-fluorinated special organic silicon material (hydroxyl-terminated polymethyl 17-fluorine decyl siloxane), and the low-surface energy property of the fluorine element is utilized, so that the hydrophilic property of the epoxy material is changed, and the modified epoxy base material with high hydrophobicity is obtained; and the modification is performed by inorganic rigid grain aluminium nitride filler with multiple grain diameters, and the coupling agent is utilized, so that the binding property of the aluminium nitride grain-the coupling agent-the resin interface is stable, the toughening effect is good, and the heat conduction ability of the modified epoxy resin is greatly improved by the high heat conductivity of the aluminium nitride grains after filling.

The invention discloses a coal and rock mass fracturing device adopting automatic energy storage high-pressure liquid injecting and CO2 phase change pulse. The device is composed of a liquid supplying system, an automatic energy storage high-pressure liquid injecting system, a phase change fracturing system and a datum collecting and control system. The liquid supplying system comprises a liquid state CO2 source, a liquid booster pump and a high-pressure liquid storage temperature control tank; the automatic energy storage high-pressure liquid injecting system comprises a high-pressure liquid injecting cylinder, an energy storage chamber and a phase change chamber; the phase change fracturing system comprises a phase change chamber and a fracturing body; and the datum collecting and control system comprises pressure sensors, temperature sensors, stop valves, safety valves and a control computer. Continuous pulse high-pressure jet flow fracturing is achieved through automatic circulation of the process of liquid injecting, oil bath heating, phase change, energy storage and fracturing, and the coal and rock mass fracturing device is suitable for quick and efficient fracturing of solid materials such as coal, rock, concrete, soil and congelation.

The invention discloses a synthetic method of efficient flame-retardant epoxy vinyl ester resin. Biophenol A diglycidyl ether, brominated epoxy resin, a polymerization inhibitor, a catalyst and an antioxidant are sequentially added to a reaction kettle, the reaction temperature slowly rises to 50 DEG C, chain extension binary acids / anhydrides are added in small quantities in batches, the mixture is heated to the temperature of 75-85 DEG C, the temperature is kept for 2 h, and the reaction acid value is decreased to be lower than 2; (3) unsaturated monoacid is dropwise added to the reaction kettle at the dropping speed of 50 ml / h, the reaction temperature change condition is observed, and congelation caused by excessively fast temperature rises is avoided; after addition, the mixture is slowly heated to the temperature of 110-115 DEG C, and the temperature is kept for 4-5 h until the acid value is decreased to be lower than 15; (4) the mixture is diluted with a crosslinking agent and fully stirred, then a flame-retardant aid is added, after the material temperature is decreased to be lower than 45 DEG C, stirring is stopped, cooling water is turned off, and package is performed. By means of the method, the best flame-retardant effect can be realized and the flame-retardant requirement in certain special fields can be met.

The invention provides a heating device which comprises a shell (1) and a heat sink (2). The shell (1) is provided with a liquid inlet (3) and a liquid outlet (4), the heat sink (2) comprises a heat dissipation pipe (5) which is located inside the shell (1), and the heat dissipation pipe (5) is provided with an air inlet end (22) and an air outlet end (23). In addition, the invention further provides an automobile comprising the heating device. The heating device can utilize residual heat of automobile exhaust to heat urea solution inside a treatment device after exhausting, electric energy and oil consumption of the whole automobile can be saved, resources of exhaust gas can be effectively utilized, and the purposes of energy conservation, environmental protection, and urea congelation prevention or urea thawing time shortening in low temperature are achieved.

The purpose of the present invention is to provide a carbon nanotube fiber which has excellent properties such as excellent electrical conductivity, thermal conductivity and mechanical characteristics. This carbon nanotube fiber is composed of an assembly of a plurality of carbon nanotubes, and the plurality of carbon nanotubes include carbon nanotubes having structures that are at least partially collapsed. A method for producing a carbon nanotube fiber according to the present invention comprises a step wherein a carbon nanotube dispersion liquid, which contains a plurality of carbon nanotubes including carbon nanotubes having structures that are at least partially collapsed, a dispersant and a solvent, is spun by being extruded into a congelation liquid.

The invention discloses an azithromycin sustained-release microsphere which comprises 30-70% of azithromycin, 5-25% of wax ester sustained-release framework material, 5-45% of other water-insoluble framework material except the wax ester sustained-release framework material and 0.1-25% of binder based on the total weight of the azithromycin sustained-release microsphere, wherein the binder is aqueous dispersion coating fluid, and the weight percentage of the binder is the weight percentage of solid substances except the solvent in the binder. The invention also discloses a preparation method and application of the azithromycin sustained-release microsphere, a suspension containing the azithromycin sustained-release microsphere and application of the suspension. According to the invention,the defect that the spraying-congelation or a large amount of organic solvent or coating is required in the prior art is solved, and the invention is particularly suitable for the preparation with anenvironmentally friendly and nontoxic extrusion-rounding method with simple steps.

The invention relates to batching type frozen yogurt and a preparation method thereof, belonging to the technical field of frozen yogurt. The batching type frozen yogurt is prepared by adding glycerol and anhydrous cream into frozen yogurt and from the following raw materials in parts by weight: 720-785 parts of raw milk, 100-140 parts of white granulated sugar, 10-40 parts of skim milk powder, 30-50 parts of anhydrous cream, 30-50 parts of glycerol, 10-30 parts of a stable thickener, 0-10 parts of jam and 0.001-0.002 part of a leavening agent. According to the batching type frozen yogurt provided by the invention, the formula is simple, and the cost of the raw materials is low. The invention also provides a preparation method which is simple and easy to implement, does not need secondary batching and congelation processes, and is suitable for large-scale industrial production in China.

A high garland ice-cream cone includes a crisp cone body and ice cream in the crisp cone body, wherein the raw materials for the ice cream include, by weight, white sugar 12.5-15%, whole milk powder 8.75-10.0%, edible oil 7.5-8.5%, maltodextrin 1.5-2.5%, malt sugar 3.75-5.0%, emulsifying stabilizer 6-8%, a moderate amount of essence and pigments and the balance purified water. The invention further discloses a making method of the high garland ice-cream cone. The making method mainly includes the steps of material preparation, volume fixing, homogenizing, sterilization, cooling, aging, essence and pigments adding and even stirring, congelation and freezing, fill-forming, transparent plastic cover putting, hardening, boxing and finished product warehousing. According to the high garland ice-cream cone, two colors of the ice cream and chocolate are mixed by optimizing the raw material proportion and adopting an exquisite process, no less than 6 layers of flower superposing effect can be formed in a pulling mode, flower shapes are full, stereo and regular and are frozen firmly, the material in the crisp cone body are rich and are not soft, no contraction phenomenon is produced, the organization is exquisite and smooth, the milk material does not produce ice crystals, and the taste is good.

The invention discloses an anti-clogging joint used for soil improvement by drip irrigation under a film in a saline-alkali land, belonging to the technical field of drip irrigation. The anti-clogging joint comprises a water inlet pipe, wherein the outer wall of the left end of the water inlet pipe is provided with an installation thread; the right end of the water inlet pipe is connected with an anti-clogging pipe; the bottom part of the anti-clogging pipe is provided with a silt outlet; the bottom part of the silt outlet is provided with a silt collecting tank; and the bottom part of the inner cavity of the silt collecting tank is provided with a pressure control valve. The anti-clogging joint provided by the invention has the advantages of convenient use, ingenious design, and strong practicability and novelty; by utilizing the silt collecting tank arranged at the bottom part of the anti-clogging pipe, silt in a pipeline can be effectively collected; the pressure control valve can automatically discharge impurities like the silt; an anti-clogging device can effectively filter impurities like the silt; an anti-clogging blade can scrape congelation located at the left side of a filtration device; and the anti-clogging joint can effectively prevent the impurities like the silt from entering the drip-irrigation pipe and clogging the drip-irrigation holes, so the survival rate of a plant is improved, and the use cost is reduced.

A frozen sour soybean milk processing process relates to a sour soybean milk processing process The invention provides a process for processing the frozen sour soybean milk which is cool and tasty and long in shelf life. The technical scheme of the invention is as follows: the process comprises the following steps of soybean raw material preprocessing, grinding, boiling, blending, homogenization, sterilization, inoculation, fermentation, aging, congelation and refrigeration.

The invention provides a method for preparing gelatin. By adopting residual aggregate generated after gelatin extraction is carried out for three to four times as a raw material, a gelatin preparation technology by an enzyme method replaces a high temperature gelatin extraction technology to extract gelatin. The method provided by the invention can greatly improve the yield of high-quality gelatin by 20-30wt%. The prepared gelatin has the physicochemical properties such as great congelation force, high viscosity and high transparency and has narrow molecular weight distribution and excellent quality. In addition, the gelatin preparation process by the enzyme method is adopted, so that the yield of high-quality gelatin is greatly improved. The method is mild in production condition and applicable to mass industrial production and saves a lot of energy resources, so that the environment is protected, and the method is simple to operate, and the cost is lowered. By means of the residual aggregate generated in conventional production, the cost of sewage disposal is lowered and the environmental pollution is reduced.

The invention discloses an ice condensation resistant ultra-thin wearing course pavement and a preparation method thereof. The ice condensation resistant ultra-thin wearing course pavement is prepared from the following raw materials in parts by weight: 15-17 parts of 10-15 mm gravels, 14-16 parts of 5-10 mm gravels, 11-13 parts of stone chips of which the particle size is smaller than 3 mm, 3-5 parts of ice condensation resistant agents, 2.2-2.6 parts of modified asphalt, and 1.1-1.4 parts of polymer modified emulsified asphalt, wherein the content of sodium chloride in the ice condensation resistant agents is 50-60%, and the solid content of the polymer modified emulsified asphalt is greater than or equal to 65%. According to the invention, ice condensation resistant ultra-thin wearing courses are paved on the pavement, so that the ice point of water in the surface of the pavement is reduced, snow accumulation and icing on the pavement are delayed, a new solution is put forward for solving the problem of the congelation of the pavement in winter is restrained, and safe running on the pavement is ensured.

The invention provides a yoghourt ice cream and a preparation method thereof. The method for preparing the yoghourt ice cream comprises the following steps of (1) sequentially mixing the raw materials so as to obtain a mixture A, homogenizing the mixture A for the first time, performing disinfection on the homogenized mixture A, cooling the disinfected mixture A, fermenting the cooled mixture A, and performing emulsion breaking treatment; (2) firstly performing after-ripening on the mixture A obtained in the step (1), and then performing ageing treatment so as to obtain a mixture B; and (3) sequentially performing homogenizing for the second time, congelation and quick-frozen treatment on the mixture B obtained in the step (2) so as to obtain the yoghourt ice cream. The yoghourt ice cream prepared by the preparation method of the yoghourt ice cream, disclosed by the invention, has one or more advantages of being rich in nutrient component, excellent in flavor and mouth feel, and high in stability.

The invention relates to a low-fat frozen beverage containing blueberries and a preparation method of the low-fat frozen beverage. The frozen beverage consists of the following ingredients: white granulated sugar, crushed blueberries, white gourd juice, skimmed milk powder, acidity regulators, stabilizing agents and water. The preparation method comprises the following steps that: the white granulated sugar, the white gourd juice, the skimmed milk powder, the acidity regulators, the stabilizing agents and the water are mixed to obtain material liquid, and homogenizing, sterilization, cooling, aging and congelation are carried out; and the crushed blueberries are added into the material liquid, and subsequent steps of injection molding, freezing and demolding are carried out. The frozen beverage prepared by the invention has the characteristics that the cool and summer heat relief effects are realized, the flavor is unique, and the mouth feeling is cool and smooth. Certain health care functions of reducing the fat, reducing the weight and the like are also realized.

The embodiment of the invention provides a synchronous grouting device and method for downslope-section tunneling of water-rich stratum shield. The synchronous grouting device comprises mud pumps, a slurry mixing device and an air compressor. Two-liquid-type slurry enters the slurry mixing device through the two mud pumps and after fully mixing, the two-liquid-type slurry enters a shield machine pipeline and is input into a duct piece wall for further chemical reaction, and solid congelation with certain strength is formed. The two-liquid-type slurry consists of liquid A and liquid B. The volume ratio of liquid A to liquid B is 10:1, the weight ratio of raw materials of cement to water to mud to retarder in liquid A is 1: 1.2: 0.5: 00.1, and liquid B is water glass with a baume degree of 30. The slurry mixing device can better enable a grouting pump to communicate with the shield machine pipeline to realize two-liquid-type synchronous grouting in the shield tunneling process, at the same time, the air compressor is used for transporting air to ensure the smoothness of the pipeline, and the occurrence of a pipe jam accident is prevented.

The invention discloses a method of cold water fracturing, and belongs to the technical field of oil-gas well engineering. The method of cold water fracturing comprises the steps that S1, fracturing liquid is prepared, specifically, the fracturing liquid which has no precipitation of solid materials in the state of 1-5 DEG C and with a stable colloid structure is selected; S2, the temperature of the fracturing liquid is lowered, specifically, ice blocks are added into the fracturing liquid in the S1 so that temperature cooling treatment can be conducted; S3, formal fracturing is conducted; andS4, well covering is conducted, specifically, the fracturing liquid is poured into a stratum, after the fracturing liquid temperature does not change, fracture liquid is recycled. According to the method of the cold water fracturing, improvement is conducted in terms of water power fracture, the influence of temperature on racks are brought into traditional water power fracture, the fracture is conducted through the cold water, the rocks are in the action of solid flow mechanics and are further subjected to congelation damage, crack tip stress and the rock inner stress supplement each other to reach the effect of optimization of rock breaking.

The invention provides a volatile reagent sealing bottle. A bottle cover can rotate around a connection mounting part which is connected with a mounting seat on the side wall of a bottle opening of a bottle body and can be buckled on the bottle opening, and when the bottle cover is buckled on the bottle opening, a sealing ring on the bottle cover is extruded on the bottle opening of the bottle body through a downward drawing force generated by that a buckle ring on the extension part of the bottle cover is hung on the protrusion part of the bottle body, so that the bottle opening is sealed; the buckle ring is dismounted from the protrusion part of the bottle body, the buckle ring is held to upwards pull the extension part of the bottle cover to enable the bottle cover to rotate upwards around the connection mounting part, and the bottle cover can be opened, so that the bottle cover is easier to open; at the same time, bottle covers and bottle bodies correspond one by one, the situation of loss or displacement is difficult to occur, the conditions that the reagents are polluted because the bottle covers are covered by mistakes, the bottle covers are adhered by congelation generated by the reaction and the like are avoided, and the problems of inconvenient storage and inconvenient usage when glass bottles with dull polish openings, glass bottles with wooden bottle plugs and the like are used for storing volatile reagents in the prior art are well solved.

The invention discloses a safety facility device used for real-time warning of icing on a highway pavement. The safety facility device used for real-time warning of icing on the highway pavement comprises solar energy ground lamps (1) and a solar energy light-emitting diode (LED) panel (2). According to the safety facility device used for real-time warning of icing on the highway pavement which comprises solar energy ground lamps (1) and the solar energy LED panel (2), wherein each solar energy ground lamp (1) comprises a solar photovoltaic cell, a charge-discharge cell, a red-and-green double-color LED lamp, a temperature and humidity transducer and a D data processing transmission chip circuit, and the solar energy LED panel (2) comprises the solar photovoltaic cell, the charge-discharge cell, a LED image-text display screen, a P data processing chip circuit and a red twinkling caution lamp. The technical scheme includes that the safety facility device used for real-time warning of icing on the highway pavement sends out red light and image-text caution according to congelation critical data collected from the ground, and transmits the congelation critical data to a traffic control center through an internet. The safety facility device used for real-time warning of icing on the highway pavement overcomes the defects that pavement congelation warning can not be issued in a real-time and real-section mode in the prior art, and enables expressways to achieve the purpose that the congelation warning can be issued in the real-time and real-section mode.

The invention provides a lyophilized preparation and a preparation method thereof. The preparation method comprises the following steps: a) mixing preparation raw materials, and carrying out congelation, so that a soft ice mixture is obtained, wherein the preparation raw materials comprise active ingredients, a binding agent and water, the mass ratio of the active ingredients to the binding agentis (0-100):(0-100), and the contents of the active ingredients and the binding agent are not zero at the same time; b) releasing the soft ice mixture into an environment by adopting a filling machine,and carrying out consolidation forming, so that a condensate is obtained, wherein the filling machine is selected from a liquid moving device, a plunger pump, a screw pump, a gear pump or peristalticpump; and c) carrying out lyophilization on the condensate, so that the lyophilized preparation is obtained. The prepared lyophilized preparation is controllable in shape and relatively high in drugloading capacity; and the lyophilized preparation is good in strength, high in disintegration speed and good in solubility. Experimental results show that the drug loading capacity of the lyophilizedpreparation is 0.01-99.9%; friability of the preparation is less than 0.1%, disintegration time of the preparation in water is shorter than 15s, and complete dissolution time is shorter than 15s.

The invention discloses a processing method for fish scale aspic, the processing method includes the following steps: firstly mixing and stirring new fish scales with salt, cleaning the new fish scales orderly by the automatic cleaning machine, the ultrasonic automatic cleaning machine, marinating with white vinegar and cooking wine, decocting until the new fish scales are adequately curved and embrittled after boiling in the wok with seethed water, filtering with a nylon gauze ; secondly tiling the decocted fresh roe on the bottom part of a packing box of fish scale aspic, bottling the decocted fish scale aspic in the packing box at 0-4oC for adequate congelation or bottling the evenly mixed decocted fish scale aspic,the lemon juice and cooked corn kernels at 0-4oC for adequate congelation, preserving the fish scale aspic at 0-4oC.The method has the advantages of none-strong acid,strong base and enzyme preparation in the preparation process, and the preferable cleaning method and cleaning effect ,and no damages to the fish scale aspic and simple operation. Industrial production can be realized, different flavours of the fish scale aspic as sweet and salty can be attainable and an appearance is fresh and beautiful.

The invention relates to a preparation method of kiwi fruit ice cream. The preparation method comprises the following specific steps of (1) preparing kiwi fruit powder: cleaning fresh kiwi fruits, peeling the cleaned kiwi fruits, cutting the peeled kiwi fruits into kiwi fruit slices, freeze-drying the kiwi fruit slices, crushing the freeze-dried kiwi fruit slices, and screening the crushed kiwi fruits so as to obtain kiwi fruit powder; (2) mixing raw materials with auxiliary materials: mixing the kiwi fruit powder with vegetable fat powder, nonfat dry milk powder, white granulated sugar, monostearin, sucrose esters, guar gum, xanthan gum and yolk liquid, adding water, and performing sufficient stirring; (3) performing high-pressure homogenizing: homogenizing a mixture obtained by uniformly mixing the raw materials with the auxiliary materials through a second-class high-pressure homogenizing machine; (4) performing sterilization, and performing filtration; (5) performing cooling; (6) performing ageing; (7) performing congelation; (8) performing filling, and performing shaping; and (9) performing hardening. The kiwi fruit ice cream made by the preparation method disclosed by the invention is viridescent in color, moderate in sugariness, fine and smooth in mouth feel, intact in shape maintaining, and rich in various nutrient components particularly vitamins, and has specific taste and medical health-care value of kiwi fruits.

The invention discloses a snow congelation water washing technology of denim fabric, and relates to the field of water washing. The snow congelation water washing technology comprises the following steps of pretreating the denim fabric; preparing snow congelation potassium permanganate slurry; stirring the snow congelation potassium permanganate slurry with plastic balls; frying the denim fabric;conducting water washing for the first time; conducting dehydration for the first time; drying for the first time; spraying monkey; conducting reduction and neutralization; conducting water washing for softening; conducting dehydration for the second time; conducting drying for the second time. By means of the snow congelation water washing technology of the denim fabric, the effect similar to that of washing snow with pumice can be generated, the effect variability is better optimized, the plastic balls used for frying the snows can be repeatedly utilized, the service life is long, washing isconvenient, and the time for soaking pumice in potassium permanganate is also saved.