908results about How to "Short process" patented technology

The invention relates to a method for recovering cobalt and lithium from waste lithium ion batteries, which aims to prevent metals in waste lithium ion batteries from generating secondary waste gas pollution to the environment and lower the requirement on anticorrosion of equipment in the leaching process. The method comprises the following steps of: firstly, discharging and disassembling waste lithium ion batteries; carrying out alkali leaching and filtering treatment on waste positive plates to obtain LiCoO2 powder; fully mixing the LiCoO2 powder and the salts of alkali metals (sodium and potassium) in the mass ratio of 1:3-9, and then, roasting the mixture for 0.2-3 hours at the temperature of 500 DEG C-750 DEG C; leaching the roasted products with water for 5-30 minutes at the temperature of 40 DEG C-70 DEG C; depositing cobalt and lithium in the leaching solution to obtain cobalt oxalate and lithium carbonate; and adjusting components of the leaching waste solution with sulfuric acid, and carrying out crystallization treatment to obtain sodium bisulfate and potassium bisulfate, wherein the sodium bisulfate and the potassium bisulfate can be recycled in the roasting process.

The invention relates to a method for producing a chiffon fabric and particularly relates to a method for producing an elastic silk-like chiffon fabric. The method comprises the following steps of: rolling up grey cloth; refining, untwisting and preshrinking; presetting; reducing the amount of alkali; dyeing; cleaning; after-finishing; and detecting, batching and packaging. The raw materials of the silk-like chiffon fabric comprise warp yarn and weft yarn, wherein the warp yarn is made of 30D superfine denier fiber, and the weft yarn is made of 30D superfine denier fiber and spandex fiber. By improving the processes of refining, untwisting and preshrinking, the fabric is uniform in folds and loose in structure, and by improving the processes of presetting, reducing the amount of alkali, dyeing and cleaning, the fabric overcomes the defects in the prior art. The obtained final product makes people who wear the clothes made of the fabric looks skinny and has good air permeability, drapability, static-electricity resistance, moisture absorptivity and wearability, and soft, full and fine handfeel, and the weight gram and the handfeel of the fabric can meet the requirements of people.

The invention discloses a titaniciron ore floatation method at full grades, which uses the tail mineral after the selection of V-Ti-bearing iron ore as raw material, and after a strong magnetic throwing at the magnetic field intensity of 1300 A to attain the ª‰TiO2 rubble titanium finished ore of 17-19%; then milling the rubble titanium ore in closed circuit, the acceptable product can via the weak magnetic iron selection enter the two-stage strong magnetic field in the magnetic field intensity of 750 A, to attain the ª‰TiO2 titanium finished ore of 22-24%; at last processes the reverse-floatation and desulfurization, the tail mineral can enter the floatation process at full grade, while the metal recovery rate can reach 34-36%. The invention has short process, lower cost, higher metal recovery rate, controllable production, and excellent economic benefits.

The invention discloses a method for preparing and recovering a ternary anode material from waste nickel-cobalt-manganese ternary lithium ion batteries. The method is characterized by including steps: step 1, subjecting the waste nickel-cobalt-manganese ternary lithium ion batteries to disassembling, crushing, calcining and leaching to obtain leachate which contains Li, Ni, Co and Mn, and subjecting the leachate to decontamination to obtain decontaminated liquid; step two, adjusting a molar ratio of Ni, Co and Mn in the decontaminated liquid, adding alkali metal hydroxides, adjusting system pH to be larger than or equal to 10, and performing primary precipitation to obtain turbid solution with NCM hydroxide precipitates; step 3, adding carbonates into the turbid solution obtained at the step 2 to realize secondary precipitation, and performing solid-liquid separation to obtain a ternary material precursor; step 4, calcining the ternary material precursor in air to obtain the ternary anode material. The method is simple in process, extensive in raw material source and high in repeatability, and the ternary anode material prepared according to the method is excellent in performance and available for large-scale production.

The invention discloses a method for recovering indium and germanium from a zinc leaching residue. The method comprises the following steps of: leaching the zinc leaching residue containing the indium and the germanium by using a sulfuric acid, eliminating ferric iron and removing silicon, and then, adding a hydroximic acid and P204 kerosene to synergistically extract the indium and the germanium, extracting 99% of the germanium and the indium, and then carrying out back extraction on the germanium through an ammonium fluoride and precipitating the germanium by ammonia gas or ammonia water, carrying out the back extraction on the indium through concentration and a hydrochloric acid, replacing the indium with aluminum, and roasting a germanium precipitation residue to respectively obtain an indium ingot and a germanium concentrate. By using the method, the germanium and the indium can be extracted from slag with a lower grade; a procedure is simple; the operation is easy; and fewer pollutants are discharged.

The present invention provides a method for recovering lead oxide from waste containing lead oxide. The method comprises: (1) contacting waste containing lead oxide and a complexing agent solution, and carrying out solid-liquid separation on the contacting mixture to obtain the lead-containing filtrate and the filter residue; (2) carrying out a reaction of the lead-containing filtrate and a precipitating agent, carrying out solid-liquid separation on the obtained reaction product to obtain a lead salt precipitate and a regenerated complexing agent filtrate, and returning the complexing agent filtrate to the dissolving process of the step (1); and (3) carrying out desalination decomposition on the lead salt precipitate to obtain PbO. With the method of the present invention, the PbO in the waste containing lead oxide can be efficiently and selectively recovered, the impurities can be effectively removed, and the high-purity PbO can be obtained.

The invention discloses a preparation method of a Cu-Nb multi-core composite wire with the rectangular cross-section, which comprises the following steps: firstly, carrying out first extrusion assembly and drawing for a single pure Nb rod and a first outer oxygen-free copper sheathing; secondly, carrying out second extrusion assembly and obtaining a first Cu-Nb multi-core composite filament; secondly, according to the extrusion assembly method and related process parameters in the step 2, repeatedly carrying out third extrusion assembly; thirdly, according to the extrusion assembly method and related process parameters in the step 2, repeatedly carrying out fourth extrusion assembly; and finally, setting and drawing by a rectangular mold. The invention has simple process step, short process, high production efficiency, low preparation cost and good use effect, and the produced Cu-Nb multi-core composite wire has superior performance; and the invention is suitable for mass production, can better control the dimensional accuracy of the rectangular cross-section, and can machine any size and length of hundred-million-magnitude-order Cu-Nb multi-core composite wires with the rectangular cross-section.

A process for preparing the WC-based spherical powder for thermospray coating includes such steps as proportionally mixing WC, Co or mixture of Co and Cr, hexane and paraffin wax, wet grinding, spray drying, granulating, sieving, sintering under protection of H2, and classifying.

The invention discloses a short-process method for preparing a high-performance sintered NdFeB magnet by utilizing a sintered NdFeB oil sludge waste material, and belongs to the technical field of recycling of the sintered NdFeB oil sludge waste material. The method comprises the following steps: (1) distillation of organics in oil sludge, (2) ultrasonic washing of oil sludge powder, (3) calcium reduction and diffusion, (4) ultrasonic rinsing and drying under a magnetic field, (5) powder mixing and sintering, and the like. The short-process method has the advantages that when the sintered NdFeB oil sludge waste material is taken as a raw material, the regenerative high-performance sintered NdFeB magnet can be directly obtained; a vacuum stepped heating method is adopted in an oil sludge distillation process, so that most organics can be effectively removed; magnetic field ultrasonic treatment is adopted in an oil sludge powder washing process, so that residual organics can be effectively removed; through an addition of nanometer powder, the maximum magnetic energy product of the obtained regenerative high-performance sintered NdFeB magnet can reach 35.26 MGOe. The method is short in process, efficient, environmentally friendly, and high in rare earth recycling rate.

The invention relates to an oil-resistant, high-temperature-resistant and flame-retardant thermoplastic elastomer cable material and a preparation method thereof and belongs to the technical field of electric wires and cables and preparation thereof. The cable material is prepared from the following raw materials in parts by weight: 20-35 parts of a thermoplastic elastomer, 5-15 parts of an oil-resistant modifier, 5-10 parts of polypropylene, 1-5 parts of a compatilizer, 2-6 parts of extending oil, 15-25 parts of a flame retardant, 0.2-0.6 part of a lubricant and 0.4-0.8 part of an antioxidant. As raw materials are reasonably selected and proportioned, the mechanical property change rate of the material soaked in 902# oil for 168 hours at 60 DEG C is within 25%, the high-temperature-resistant deformation is 26-30% at 150 DEG C, and the flame-retardant performance reaches VO level, so that the stringent requirements of UL62 on the TPE material are fully satisfied. The preparation method provide is short in technical process, and the extruding temperature is within 100-200 DEG C. Compared with the prior art, the extruding temperature is remarkably reduced and an energy-saving effect is reflected.

The invention provides a method for preparing a natural cellulose nonwoven fabric in a wet-type meltblown mode, which comprises the following steps: adding an N-methylmorpholine N-oxide solvent into pulp which is used as a raw material, mixing to dissolve the pulp so as to obtain a dope, extruding the dope out of a spinning port in a meltblown mode to form a cellulose filament, solidifying and regenerating the cellulose filament through water spraying, washing with water, carrying out spunlace, drying, coiling and the like, thereby obtaining the natural cellulose fiber nonwoven fabric in a continuous long fiber shape.

The invention relates to a method for extracting and refining a long-chain dicarboxylic acid crude product. The method comprises the following steps that: the filtrate and an extracting agent are mixed and heated, and an acid is added to carry out acidifying; a liquid-liquid separation treatment is performed after the extracting agent and the filtrate are subjected to complete mixing and standing under a certain pH value and a certain temperature; the extraction phase is cooled and crystallized; the solvent is removed, and a drying treatment is performed to obtain the purified product. According to the present invention, the adsorbent is not used, such that the process for separation of the adsorbent and the fermentation liquid is saved so as to substantially reduce the purification process; the method has characteristics of simple purification process, high purification yield, and easy control of the purification process.

In the present invention, a gas-solid distributing board is set inside the fluidized bed riser tube to form two-section fluidized bed to reactor and the reactor includes the upper section chloridizing reactor and the lower section oxidizing reactor. By means of the process and equipment, the reactor has two dense phase areas in the axial height and this creates condition for the process needing temperature distribution or density distribution. In addition, limiting the axial backmixing of gas can raise the gas converting rate. The present invention has the advantages of short process flow, high conversion, high selectivity, low power consumption, easy control, etc.

The invention provides a process for extracting vanadium by acid leaching of stone coal. The process mainly comprises the following steps of: removing aluminum from crystal aluminum sulfate ammonium vanadium obtained from acid leaching solution of stone coal, performing selective oxidation and adjustment of a pH value of the solution obtained after the aluminum removal to remove iron, performing oxidizing transformation of vanadium in the solution obtained after the iron removal, adsorbing the vanadium in the transformed solution by anion exchange resin, desorbing and regenerating the vanadium-loaded resin, performing ammonium salt precipitation of the vanadium-desorbing solution, performing pyrolysis of ammonium metavanadate, transforming the aluminum sulfate ammonium vanadium and the like. The process has the advantages of short flow, little consumption of reagent, high vanadium recovery rate, low production cost, good product quality and the like.

The invention discloses a method for separating and recovering rare and precious metals in chlorination leaching liquid. The chlorination leaching liquid of complex rare and precious metal materials is used as stock solution; a substance containing no heavy metal elements is used as a reducing agent; and the stock solution is selectively reduced through controlling potential to convert the rare and precious metals therein to simple substances step by step for precipitating to form various rare and precious concentrates, so that the rare and precious metals in the stock solution are effectively separated and recovered, selenium tellurium concentrates are obtained, and the purpose of separating and recovering the rare and precious metals in the chlorination leaching liquid is achieved. The method is short in flow, low in cost, easy to operate, high in adaptability, capable of treating various complex chlorination leaching liquid, excellent in separating effect of the rare and precious metals in the chlorination leaching liquid and high in recovery rate.

The invention discloses a method for producing polyester industrial yarn by a one-step method, comprising a solid-phase polymerization step, a fusing spinning step, a stretching and heat shaping stepand a winding and forming step. The method is characterized in that: in the solid-phase polymerization step, raw materials with the viscosity of 0.65+/-0.05dl/g, the content of terminal carboxyl groupof 24+/-3mol/t are cut into pieces and stuck to be materials with the viscosity of 1.035+/-0.01dl/g, the water content less than or equal to 20ppm and the content of the terminal carboxyl group lessthan or equal to 15mol/t through continuous solid-phase polymerization; in the fusing spinning step, the ratio of the length to the diameter of spinneret orifices of a spinneret plate for spinning is3:1, the deviation ratio of the aperture to the length of the spinneret orifice is +/-0.02, and the spinneret orifices are evenly arrayed in the spinneret plate; in the stretching and heat shaping step, four rollers are adopted for stretching and shaping; and in the winding and forming step, the winding speed is 6,300+/-500m/min. The polyester industrial yarn can simultaneously achieve the performances of high strength, high modulus and low shrinkage, and has breakage strength more than or equal to 8.2CN/dtex, initial modulus more than or equal to 110N/dtex, the modulus more than or equal to 5.0cn/dtex when 5 percent is stretched and dry heat shrinking percentage less than or equal to 4.1 percent.

The invention relates to a method for separating and recovering copper, nickel and iron from electroplating sludge. The method mainly comprises the following steps: first, dissolving the electroplating sludge, and removing ferric ions in the form of a ferric hydroxide precipitate by adjusting the pH; second, forming the precipitates of the copper and the nickel by adjusting the pH, washing and filtering the precipitates, adding glycerol to form crimson blue glycerin copper solution to realize the separation of the copper form the nickel, and separating copper hydroxide precipitate from the separated crimson blue solution by adjusting the pH; third, washing the copper hydroxide precipitate obtained in the second step and dissolving the washed copper hydroxide precipitate by using sulfuric acid to obtain nickel sulfate solution, and evaporating the nickel sulfate to obtain acidic nickel sulfate. According to the method, the problem that the copper, the nickel and the iron in the electroplating sludge are difficult to recover when the copper, the nickel and the iron coexist is solved, and the corresponding recovery products are respectively obtained by fully utilizing the difference among the chemical properties of the copper, the nickel and the iron; the method has the advantages of short process flow, easiness in operation and high recovery rate.

The invention discloses a method for extracting vanadium from stone coal pickle liquor. The technical process mainly comprises the steps of extracting the stone coal pickle liquor subjected to aluminum removal through an acidic phosphate ester extracting agent solvent to remove ferric iron, enriching the vanadium through the acidic phosphate ester extracting agent solvent after the iron is removed and the pH of the liquor is adjusted, neutralizing precipitates with the vanadium-enriched liquor to obtain vanadium dioxide hydrate, refining the vanadium dioxide hydrate, calcining the refined vanadium dioxide hydrate to obtain a vanadium oxide product and the like. The method for extracting the vanadium from stone coal pickle liquor has the advantages of short technical flow, low consumption of reagents, low production cost, high product quality, environment friendliness and the like.

The invention provides a method for recycling vanadium and chromium from high-chromium low-vanadium vanadium precipitation wastewater. The method comprises the following steps of: adsorbing the vanadium and the chromium in the vanadium precipitation wastewater by using ion exchange resin to obtain resin containing the vanadium and the chromium; desorbing the resin containing the vanadium and the chromium to obtain a desorption solution containing the vanadium and the chromium; performing vanadium precipitation treatment on the desorption solution to obtain coarse ammonium polyvanadate and a chromium-containing solution or obtain coarse ammonium metavanadate and the chromium-containing solution, adjusting the chromium-containing solution to be acid, performing reduction and neutralization treatment on the chromium-containing solution, and thus obtaining chromium residues; and dissolving the coarse ammonium polyvanadate by using a basic solvent, further precipitating the vanadium, and thus obtaining the ammonium polyvanadate or the ammonium metavanadate, or dissolving the coarse ammonium metavanadate in hot water to form a solution, adding ammonium salt into the solution, performing recrystallization, and thus obtaining qualified ammonium metavanadate. By the method, the vanadium and the chromium can be recycled and separated from the vanadium precipitation wastewater directly, and a qualified vanadium product can be obtained; and the method has the characteristics of short process, high vanadium yield, simple industrialization equipment and the like.

The invention discloses a PTFE (polytetrafluoroethylene) fiber for denitration. The fiber is prepared from PTFE dispersion resin, aviation kerosene and manganese catalyst powder. The invention further provides a preparation method of the PTFE fiber for denitration. The method comprises the steps of raw material inspection, storage and refrigeration, ingredient mixing, standing and curing, prepressing forming, pushing forming, heat preservation in a water tank, rolling for film forming and filamentation of short fibers. The PTFE fiber and the preparation method have the advantages that a functional filter material for dedusting and denitration can be directly prepared from the PTFE fiber; the preparation method of the PTFE fiber is short in process, a denitration catalyst is evenly dispersed in the fiber, and the denitration function is stable and efficient.

The invention provides a surface treatment method for an electronic product shell. The method can form a color gradient effect on the shell surface. The method comprises the following steps: (1) spraying primer on the shell surface; (2) forming a metal coating film on the primer through vacuum coating; (3) forming texture on the metal coating film through laser etching; (4) spraying a first kind of color adding paint, and forming a first color layer with the thick middle and two thin edges on the metal coating film; (5) spraying a second kind of color adding paint, and forming a second color layer with the thin middle and two thick edges on the metal coating film, wherein the second color layer covers the first color layer; (6) spraying varnish. The first color adding paint is different from the second color adding paint in color. The method can realize a gradient color coating effect on the same shell and has the advantages of being easy to operate, less in technological process and low in cost.

The invention discloses a method for separating nickel and cobalt from manganese in a high manganese-cobalt ratio nickel-cobalt-manganese raw material. The method comprises the following steps of mixing a high manganese-cobalt ratio nickel-cobalt-manganese raw material and an ammoniacal leaching agent under control of an ammoniacal leaching agent initial concentration, leaching time and a leaching temperature, adding a reducer into the high manganese-cobalt ratio nickel-cobalt-manganese raw material-ammoniacal leaching agent mixed leaching system, after full reaction, and carrying out thermal insulation aging and solid-liquid separation to obtain nickel-cobalt ammoniacal leachate and high-manganese leaching residue. The method realizes separation of nickel and cobalt from manganese in the high manganese-cobalt ratio nickel-cobalt-manganese raw material. The method has simple processes, realizes thorough separation of nickel and cobalt from manganese and high nickel and cobalt content and low impurity content of the leachate, has a high valuable metal comprehensive recovery rate, and has less equipment investment and a low production cost.

The invention relates to a twisting machine, in particular to a twisting machine used for compound double twisting. The twisting machine comprises a frame, wherein the frame is provided with a driving transmission mechanism, at least one twisting device and a yarn winding device corresponding to the twisting device; the twisting device contains at least two double twisting spindles and one compound twisting spindle, the double twisting spindles are parallel to each other and fixed on the mounting plate of the compound twisting spindle; a first-twist bolster is fixed on the mounting plate, a compound twisting spindle whorl is driven by the driving transmission mechanism, the compound twisting transmission wheel is connected with a a first-twist spindle whorl which rotates in the reverse direction of the compound twisting transmission wheel, through a transmission belt; and parallel grooves are arranged on the external circumference of at least one of the compound twisting transmission wheel and the first-twist spindle whorl. The invention mainly provides the twisting machine used for compound double twisting which has simple structure and can perform four processes to multiple strands of raw material yarn on the same platform simultaneously, namely first-twist and double twisting, combination, compound twisting and double twisting in reverse direction, and winding; the production process flow is greatly shortened, the working time is reduced, the production cost is saved, the yarn quality is remarkably increased; and the technical problems of the prior art that the twisting machine can only perform one process, the structure of the integrated twisting machine is huge and complicated and the degree of twist is inconvenient to adjust, can be solved.

The invention relates to a method for removing sulfur in petroleum coke and a desulfurizer thereof. The method adopts two types of mixed acid with a fixed ratio controlled as the desulfurizer, and comprises the following steps: placing fine petroleum coke with a high S content (the S content being 3-7 percent) in the mixed acid under the atmospheric pressure and the temperature of 0-60 DEG C, soaking the petroleum coke for reaction for a certain time, separating the petroleum coke and the soaking solution, washing and drying. The desulfurization percent of the obtained petroleum coke is 45-60 percent, the microstructure of the petroleum coke is not changed obviously, and the separated soaking solution of mixed acid can be repeatedly used when being mixed with the newly prepared liquid. The method has the advantages of low desulfurization cost, simple operation and significant desulfurization effect.

The invention relates to a method for extracting aluminium and chloride by processing aluminium ash. The method is suitable for the comprehensive application of the aluminium ash which is industrial residue generated during remelting and casting in an electrolytic aluminium plant, an aluminium processing plant or a secondary aluminium plant. The invention is characterized in that the extraction process comprises the following steps of: directly sending delivering extracted aluminium liquid for casting, after the aluminium ash is heated to completely melt aluminium in the aluminium ash and separate the aluminium from slag; immersing the slag in water to dissolve the chloride in the aluminium ash in the water, and separating solid and liquid; and evaporating liquid phase to produce a chloride crystal, and using solid phase as a raw material to produce alumina. The method for processing the aluminium ash has the advantages of short process flow, convenient operation, easy industrial implementation, high comprehensive application value and high coefficient of recovery, can extract various valuable compositions in the aluminium ash. The coefficient of recovery of the metal aluminium in the aluminium ash is larger than 85 percent, and the coefficient of recovery of the chloride in the aluminium ash is larger than 80 percent.

The invention provides an oxide dispersion strengthened (ODS) steel preparing method and martensitic steel. The oxide dispersion strengthened steel preparing method includes the steps that iron oxides are added into a casting mould, a proper number of rare earth elements are added into a fully deoxidized molten steel, the mixture is rapidly cast into the casting mould, and the ODS steel is obtained through the reaction between the rare earth elements and the iron oxides. The martensitic steel is obtained by performing hot forging, hot rolling, hot machining and hot treatment on the ODS steel prepared through the method. The ODS steel prepared through the method is high in hardenability, the residual austenitic content is very low, and a full martensite structure can be obtained. W, V and Ta are strong carbide forming elements and have a remarkable strengthening effect, and the mechanical property is obviously higher than that of steel prepared through a traditional smelting technology. Meanwhile, the ductile-brittle transition temperature (DBTT) value is minus 80 DEG C and minus 90 DEG C, the good toughness of the traditional smelting technology is well inherited, and meanwhile good anti-radiation performance is achieved. By means of the ODS steel preparing method, the demands for preparing ODS steel in batches with stability, short process and low cost can be met.

The magnesium alloy electromagnetic low-temp. semicontinuous casting method includes the steps of melting magnesium, adding compound fire-resisting elements, adding alloy elements, heat-insulating, standing still and semicontinuous casting under the electromagnetic field. It utilizes the addition of compound fire-resisting elements to implement smelting of magnesium alloy free from coverage or protection so as to shorten technological process and raise melt quality, and utilizes the application of electromagnetic field and optimization of crystallizer structure to implement the low-temp. and high-speed semicontinuous casting of magnesium alloy.

The process of enriching noble metal from copper sulfate nickel ore with low grade noble metal content includes the successive steps of: 1. smelting copper sulfate nickel ore at 1200-1300 deg.c and converter blowing to obtain metallized nickel matte melt; 2. cooling metallized nickel matte melt, crushing, milling and magnetically separating to obtain Ni-Cu alloy; 3. smelting the Ni-Cu alloy, and water quenching the melt to obtain alloy grain; and 4. hydroxydizing the alloy grain with CO gas to produce gaseous carbonyl nickel, decomposing the gaseous carbonyl nickel in a ecomposer to obtain carbonyl nickel powder product, and feeding the noble metal residue to noble metal extracting process. The technological process of the present invention is short, low in cost, environment friendly and high in noble metal recovering rate.

The invention relates to a method for producing high-purity alpha-aluminum oxide, in particular to a method for producing high-purity alpha-aluminum oxide with the purity of more than 99.999 percent by taking industrial aluminum hydroxide or sodium metaaluminate as a raw material. The method comprises the following steps: performing reaction of the industrial aluminum hydroxide or sodium metaaluminate and hydrochloric acid in a sealed reaction tank to obtain an aluminum trichloride solution; filtering, evaporating and crystallizing the aluminum trichloride solution to obtain an aluminum chloride hexahydrate crystal; dehydrating the aluminum chloride hexahydratecrystal in a protection of hydrogen chloride gas at high temperature to obtain anhydrous aluminum trichloride powder; sublimating and purifying the aluminum trichloride powder in a vacuum furnace to obtain aluminum trichloride with the purity of more than 99.999 percent; dissolving the high-purity aluminum trichloride in an ammonia solution, concentrating, crystallizing, filtering and drying to obtain high-purity aluminum hydroxide crystal; and calcining the aluminum hydroxide crystal at high temperature to obtain the high-purity alpha-aluminum oxide powder.

The invention provides an efficient and continuous dyeing process method for textile fabric through wet-state steaming, which belongs to the fabric dyeing method. The process method comprises the following steps in sequence: fabric soaking in dyeing solution, bake-steaming for color fixation, water washing and drying and feeding. During the drying and feeding procedure, the humidity of mixed gas in the reaction steam box is 25-35 percent, the temperature of the mixed gas is 120-130 DEG C, the air volume of the mixed gas is 4m3/s, and the processing time is 2-3 minutes; the saturated vapor pressure is 0.15-0.2MPa; and during the water washing procedure, the content of the water softener B in lotion is 2-3g/L, and the rest is water. The dyeing process method shortens the process flow, thereby not only improving the production efficiency, but also saving the energy. In addition, compared with the traditional dyeing process, the dyeing process method has the advantages of high color fixing speed, high color fixing rate, bright color, no dye transfer, low alkali consumption, good reproducibility, good levelness, good penetration and the like. Therefore, the invention can be used for obtaining good washing-resistant and friction-resistant fastness.