81results about "Dissolving methods" patented technology

The invention relates to the technical field of aluminum ash washing filtrate recycling intelligent control, in particular to an aluminum ash washing filtrate recycling intelligent control device and method, and the device comprises a multi-parameter online detection module, a data processing optimization module, a process parameter execution module and a filtrate circulation module. The multi-parameter online detection module is used for cooperatively detecting the real-time concentration of trace impurity ions such as fluorine, potassium and sodium through an ion selective electrode array and a micro spectrum analyzer; predicting the dissolution trend of impurity ions through an LSTM model and generating a process parameter adjustment instruction; the process parameter execution module regulates and controls the stirring strength, the liquid-solid ratio and the water-ash contact time in a linkage manner; and the filtrate circulating module is used for buffering, homogenizing and proportionally mixing the washed liquid phase to generate a regenerated leaching medium for recycling. According to the method, the detection data and the model decision are dynamically matched through the closed-loop control process, and the impurity element removal efficiency is improved.

A marine urea aqueous solution preparation device, and a preparation method therefor. The marine urea aqueous solution preparation device comprises a water bath barrel (1), a preparation barrel (2) fixed to an inner wall of the bottom of the water bath barrel (1) by means of a support leg, and a gap between the water bath barrel (1) and the preparation barrel (2) is used to contain fresh water to heat the preparation barrel (2). A top cover (6) is fixed to the top of the preparation barrel (2) by means of multiple bolts, and multiple heaters (11) are fixed to an inner wall of the water bath barrel (1). The urea aqueous solution is stirred by means of a stirring rod (3), which can sequentially drive a swinging structure and an intermittent structure, so that urea particles are intermittently sprinkled into the preparation barrel (2) in small batches.

The preparation method comprises the following steps: mixing walnut oil and idesia oil according to a mass ratio of (85-90): (10-15), stirring and heating to 68-72 DEG C under the condition of a rotating speed of 55-70 rpm, adding a gel compounded by edible wax and polyglycerol fatty acid ester according to a mass ratio of (4-6): 1, continuing to stir until complete dissolution, adding an emulsifying agent, and uniformly stirring to obtain the beta '-crystal-form woody oil-based oleogel, so as to obtain the beta'-crystal-form woody oil-based oleogel, namely the beta '-crystal-form woody oil-based oleogel. The preparation method comprises the following steps: preparing a liquid grease gel solution, directly putting the liquid grease gel solution under the condition of-10 to-40 DEG C for quick freezing, then stirring for 3-6 minutes under the condition of the rotating speed of 150-250 rpm, and standing for 5-6 days under the environment of 20-25 DEG C to prepare the woody oil-based grease gel. The grease gel prepared by the method disclosed by the invention contains a stable beta'crystal form, is high in oil holding rate and proper in hardness, has relatively good oxidation stability, and can be applied to baking instead of animal butter or hydrogenated vegetable oil.

The invention discloses an etching liquid purification device and method, and relates to the technical field of etching liquid purification, the purification device comprises a stirring tank, a circulating device, a filtering device and a plurality of feeding pipelines, the plurality of feeding pipelines are communicated with a stirring tank pipeline, the plurality of feeding pipelines are arranged, and the materials are added according to the mass according to the formula requirement, so that the raw materials are fully mixed; when raw materials enter the stirring tank, the raw materials are automatically stirred, the outer circulation loop is opened through the circulation device, liquid in the stirring tank is pumped out and conveyed through the circulation pipe, mass transfer and primary heat exchange are promoted in the circulation process, and particulate matter in the liquid is removed by integrating the filtering device on the outer circulation loop. Such as soluble particles and poorly soluble particles.

The invention provides a powder dissolving kettle and a powder dissolving method. The powder dissolving kettle comprises a dissolving kettle body, a Venturi tube ejector and a top saturated steam ejection part, the venturi tube ejector is connected with the side wall of the dissolving kettle body, and the axis of the venturi tube ejector is parallel to the horizontal plane; the venturi tube ejector comprises a first saturated steam inlet end and a powder inlet end which are arranged outside the dissolving kettle body, and a mixed material outlet end connected with the side wall of the dissolving kettle body; the top saturated steam jet part is arranged at the top of the dissolving kettle body. According to the invention, the Venturi tube ejector is adopted to suck powder and enable the powder to tangentially enter the dissolving kettle body, so that a relatively large centrifugal force is generated, and a good powder dispersing effect is formed; in the mixing process of the powder and the saturated steam in the dissolving kettle body, mixing of the powder and the saturated steam is promoted, the solubility of the powder is improved under heating of the saturated steam, and on the third hand, the dissolving efficiency of the powder in the saturated steam is improved.

The invention relates to the technical field of nano drug loading, in particular to a mixing device and a composite nanoparticle preparation method. In the mixing device, a blocking piece is in an arc shape, the blocking piece is arranged close to the side wall of a fixing base and arranged in the circumferential direction of the fixing base, the blocking piece is provided with a first end and a second end which are opposite, and the distance between the first end and the fixing base is larger than the distance between the second end and the fixing base. The blocking piece can rotate in the circumferential direction of the fixing base, and the first end portion is located in front of the second end portion in the rotating direction of the blocking piece. An installation groove is formed in the side wall of the fixing base and arranged in the radial direction of the fixing base, the visual assembly is installed in the installation groove, and an opening of the installation groove is sealed by a transparent window. The visual assembly is electrically connected with the processor, and the processor is used for determining whether solute particles exist or not according to image data collected by the visual assembly and then judging whether the solute particles are fully dissolved or not. The actual stirring process can be more intuitively and accurately controlled, and the stirring duration can be more reasonably determined.

The present application relates to the technical fields of medical health food, and discloses a preparation device for naringin compound loaded by octenyl succinic acid modified porous starch ester, which comprises a preparation liquid ultrasonic mixing cylinder assembly, a mixing top cover assembly is arranged on the top of the preparation liquid ultrasonic mixing cylinder assembly, and a mixed liquid shaking and stirring assembly is arranged on the mixing top cover assembly; a rocker arm base assembly is rotatably arranged at the bottom of the preparation liquid ultrasonic mixing cylinder assembly; a preparation liquid mixing cylinder assembly is fixedly arranged on both sides of the top of the preparation liquid ultrasonic mixing cylinder assembly; the preparation liquid ultrasonic mixing cylinder assembly comprises a preparation liquid ultrasonic mixing cylinder, a plurality of mixing cylinder bottom arm tables are fixedly arranged on the preparation liquid ultrasonic mixing cylinder through reinforcing rib plates, and a bottom arm table main shaft rod is fixedly arranged on the mixing cylinder bottom arm table; an aeration pipe is fixedly arranged at the bottom of the preparation liquid ultrasonic mixing cylinder, and a liquid pump is fixedly arranged outside the bottom of the preparation liquid ultrasonic mixing cylinder. The present application has the characteristics of sufficient mixing.

The invention discloses a production process of amino acid cleansing and moistening cleansing cream containing a multifunctional auxiliary agent, which comprises the following process steps: stirring surfactant and water, homogenizing and emulsifying, then adding the multifunctional auxiliary agent, and continuously stirring, homogenizing and emulsifying; the water is deionized water, and the surfactant is one or a composition of more of coconut oil amino acid, sodium cocoyl glycinate or potassium cocoyl glycinate. Aiming at the condition that deionized water is gradually added into a plurality of surfactants, and the surfactants are stirred, homogenized and emulsified, a small amount of the surfactants can be added in multiple times each time, and the small amount of the surfactants are added according to the ratio of each surfactant to water, so that the small amount of the surfactants and the water are stirred after the surfactants are added each time, and a small amount of solute is more easily surrounded by a solvent (water or oil); the intermolecular contact area is increased, and the diffusion path is shortened, so that the dissolution and dispersion are faster, and the total time is shortened. The stirring and homogenizing spaces are not communicated with one another and are independent from one another, so that simultaneous stirring in the plurality of stirring and homogenizing spaces is realized, and the process can be accelerated.

To provide novel compositions, etc. [Solution] The composition contains l-menthol and at least one component (X) selected from at least one selected from dicarboxylic acid esters, diol esters, monocarboxylic acid esters, esters of polyols having 3 or more hydroxyl groups, esters of polycarboxylic acids having 3 or more carboxyl groups, polyol ethers, polyamines, and alcohols having 6 or more carbon atoms.

The invention relates to the technical field of heme processing and utilization, and particularly discloses a method for efficiently dissolving heme. The preparation method comprises the following steps: mixing a hydrogen bond donor and a hydrogen bond acceptor according to a molar ratio of 1: 0.5-1: 8, heating in a water bath to prepare a deep-eutectic solvent, adding heme into the prepared deep-eutectic solvent, and fully and uniformly mixing the heme and the deep-eutectic solvent according to a volume ratio of 1-3.5 mg / ml. The method is simple, the steps are easy to operate, by adopting the method, the solubility of the heme is improved, the stability of the heme can be maintained, and a foundation is laid for further development and utilization of the heme.

The invention discloses automatic polyacrylamide dissolving equipment which comprises a mounting base, supporting columns are fixedly connected to the two sides of the bottom of the mounting base, a dissolving device is fixedly connected to the middle of the top of the mounting base, and a water inlet pipe communicates with the right side of the top of the dissolving device; and an operation panel is fixedly connected to the middle of the front face of the dissolving device, and outer circulating pipelines are fixedly connected to the positions, located on the two sides of the dissolving device, of the top of the mounting base. According to the automatic polyacrylamide dissolving equipment, the supporting column is tightly attached to the mounting base, so that the stability of the fixed mounting base is improved, and the situation that the mounting base shakes when the dissolving device works to affect dissolution of raw materials is prevented; the stirring frame can uniformly stir a solution in the dissolving barrel, so that the quality of the raw materials in the stirring process is improved, and the problem that the raw materials are solidified and caked when falling off is prevented.

The invention discloses novel emulsification production equipment provided with secondary homogenization auxiliary equipment and a method, and relates to the technical field of emulsification production.The equipment comprises an emulsification pot, a feeding pipe is installed at the upper end of the side wall of the emulsification pot, an L-shaped discharging pipe is installed at the bottom of the emulsification pot, and a conveying pipe is installed on the side wall of the L-shaped discharging pipe; a homogenizing tank is vertically installed at the end, away from the L-shaped discharging pipe, of the conveying pipe, a circulating pipe is installed at the bottom of the homogenizing tank, a homogenizing mechanism is arranged at the end, away from the homogenizing tank, of the circulating pipe, a slitting mechanism is arranged on the conveying pipe, and a dispersing and dissolving mechanism is arranged in the homogenizing tank. According to the device, agglomerated colloid is slit through the slitting net, the slit colloid and emulsion are dispersed and dissolved through the first stirring column and the second stirring column, then the emulsion is conveyed into the emulsifying pot through the circulating pipe, the rotating pipe and the stirring pipe, circulation of the emulsion is achieved, and the dissolution speed of micellar particles is increased.

The invention belongs to the technical field of fuel additives, and particularly relates to a preparation method of micro-quantum core mother liquor for an internal combustion engine. S1, raw material pretreatment and solvent dehydration; s2, preparation of a combustion and calorific value enhancement functional mother solution A; s3, preparation of a system protection function mother solution B; s4, preparing a mother solution C with stable operation and lubricating functions; and S5, compounding, degassing and finely filtering the three functional mother liquor. An eight-element synergistic system is constructed, and the micro-quantum core mother liquor for the internal combustion engine is prepared by adopting a three-module step-by-step preparation process; after methanol fuel is added, the combustion efficiency, power output and cold start performance can be synergistically improved, meanwhile, electrochemical corrosion, sealing element swelling and part abrasion are inhibited, and it is guaranteed that the fuel is stably stored for a long time; the process avoids the compatibility problem of multi-additive mixing, and solves multiple contradictions of energy improvement, material protection and fuel stability.

The present disclosure describes a method and a system of producing a fire suppression medium. The method includes introducing a solvent and an alkali metal or a salt of the alkali metal into the mixer and dissolving the alkali metal or the salt of the alkali metal in the solvent to create an alkali metal solution. The method also includes filtering and analyzing a sample of the alkali metal solution. If the filtered alkali metal solution does not have a sufficient alkali metal content, the method includes introducing and dissolving additional alkali metal or the salt of the alkali metal into the alkali metal solution. If the filtered alkali metal solution has the sufficient alkali metal content, the method includes filtering the alkali metal solution to remove residual alkali metal or residual salt of the alkali metal to create and collect a saturated alkali metal solution.

The invention relates to splicing type medicine dispensing equipment and a medicine dispensing method. The equipment comprises a conveying device and a plurality of medicine dispensing trays arranged on the conveying device. A plurality of working modules are arranged on one side of the conveying device and spliced in the moving direction of the dispensing tray, and an outlet of each working module faces the dispensing tray; the working module comprises one or more of a liquid bag processing module, a first medicine bottle processing module, a second medicine bottle processing module and a needle cylinder processing module; a liquid bag station and a plurality of medicine bottle stations are arranged on the medicine dispensing tray, the liquid bag processing module is used for processing liquid bags and transferring the liquid bags to the liquid bag station, and the first medicine bottle processing module and the second medicine bottle processing module are used for processing medicine bottles and transferring the medicine bottles to the medicine bottle stations. The needle cylinder processing module is used for processing a needle cylinder and transferring liquid medicine in a medicine bottle into a liquid bag through the needle cylinder. The flexibility of an assembly line can be improved, and the investment under the requirement of multiple dispensing modes is reduced.

Provided are methods of preparing a homogeneous mixture from a solid dosage form in settings including a point of care setting. The methods include obtaining a solid dosage form comprising a drug product, adding the solid dosage form to a container having at least one flexible section, adding a liquid to the container, mixing the solid dosage form with the liquid to disperse, disintegrate, suspend, and / or dissolve the solid dosage form thereby creating a homogeneous mixture. Also provided are containers and devices for use in such methods.

The present invention discloses a long-term stable high-temperature drag reducer and its preparation method, belonging to the technical field of pipeline turbulent drag reduction. The steps include fully dispersing 20%-30% of erucylamide propyl trimethyl ammonium chloride in water, then adding 60%-75% of the stabilizer sodium salicylate and stirring well, and finally adding 1%-3% of the defoamer and 2%-3% of the preservative. By adopting the above-mentioned long-term stable high-temperature drag reducer and its preparation method, the present invention has a high drag reduction rate at 60-110°C, strong stability, strong shear recovery, low cost, easy operation, and a long drag reduction life, and can maintain effective drag reduction for at least two months.

The invention relates to the technical field of pipeline cleaning, and discloses an intelligent chemical dosing pipeline cleaning machine and a using method thereof.The intelligent chemical dosing pipeline cleaning machine comprises a shell, and a cabinet door is hinged to the outer wall of the shell; the feeding assembly is arranged on the shell, the feeding assembly comprises a feeding tank, the lower surface of the feeding tank is fixed to the shell, a second feeding pipe is fixed to the bottom end of the feeding tank, and a screen is fixed to the bottom end of the second feeding pipe; the water injection assembly is arranged in the shell and used for injecting water into the device; and the mixing assembly is arranged in the shell, the mixing assembly comprises a pesticide barrel, a fixing plate is fixed to the inner top of the pesticide barrel, and a rotating rod is rotationally arranged in the fixing plate. Through cooperation of internal structures of the water injection assembly and the mixing assembly, a turbine is driven by water injection kinetic energy, and a cam is driven by a rotating rod to vibrate a screen in the feeding assembly at a high speed, so that forced evacuation and anti-caking treatment are carried out on powder before the powder falls into a powder barrel.

The application provides a kind of offset printing ink production equipment and production process, it is related to offset printing ink production technical field.The offset printing ink production equipment includes stirring mixing kettle, the outer surface of stirring mixing kettle is fixedly connected with first premixing barrel, second premixing barrel, third premixing barrel and fourth premixing barrel.In the application, the heating pipe in the first premixing barrel is started, the temperature in the first premixing barrel is increased to 90 DEG C, then the valve on the first material pipe is opened, the material is entered into the second premixing barrel through the first material pipe, after the material in the first premixing barrel is discharged, the material heated to 90 DEG C is made again according to the above method, the heating pipe in the second premixing barrel is started, the temperature in the second premixing barrel is increased to 110 DEG C, according to the above method, the temperature in the third premixing barrel is increased to 130 DEG C, and the temperature in the fourth premixing barrel is increased to 150 DEG C, so that the material is heated in batches, and the heating temperature in each stage is increased in turn, which can improve the dissolution effect of rosin modified resin.

The invention discloses an etching liquid purification device and a purification method, which relate to the technical field of etching liquid purification. The purification device comprises a stirring tank, a circulation device, a filtering device and a feeding pipeline. A plurality of feeding pipelines are provided, and the plurality of feeding pipelines are connected to the stirring tank pipeline. By setting up the plurality of feeding pipelines, the raw materials are added according to the mass according to the formula requirements. When the raw materials enter the stirring tank, they are automatically stirred, and an external circulation loop is opened by the circulation device to extract the liquid in the stirring tank and transport it through the circulation pipe. The circulation process itself also promotes mass transfer and preliminary heat exchange. By integrating the filtering device on the external circulation loop, particulate matter in the liquid, such as soluble particles and insoluble particles, is removed.

The invention discloses intelligent energy-saving surfactant adding equipment for food processing and a method thereof, and belongs to the technical field of surfactant processing. The intelligent energy-saving type surfactant adding equipment comprises a mixing bin mounted on a bearing frame body and an adding bin mounted on one side of the bearing frame body, and the intelligent energy-saving type surfactant adding equipment is used for dissolving a surfactant in liquid, conveying the liquid into the mixing bin and uniformly mixing the liquid with food main materials; the controller with a built-in programmable logic controller (PLC) is used for regulating and controlling the stirring speed of the mixing bin and the supply quantity of the surfactant liquid in the adding bin; the auxiliary mechanism is arranged at the lower part of the bearing frame body, jacking equipment connected with a controller is arranged on two sides of the auxiliary mechanism, and the bearing frame body is jacked on one side to incline the mixing bin so as to assist in accelerating mixing. The dough kneading process is performed while the surfactant and the food main material are mixed, the solid material mixing process in traditional food processing is reduced, and the surfactant mixing efficiency is improved by dissolving the surfactant and then mixing.

The invention relates to the technical field of tailing treatment, in particular to a waste hydrochloric acid dissolving device for tailing reutilization and a dissolving method.The waste hydrochloric acid dissolving device for tailing reutilization comprises a dissolving bottle installed on a bearing frame, and a stirring device capable of mixing and stirring substances added into the dissolving bottle is installed in the dissolving bottle; a dissolution acceleration mechanism is further arranged on the dissolution bottle and comprises a ventilation assembly and a switching assembly, the ventilation assembly comprises a ball valve arranged on the dissolution bottle, the ball valve communicates with the interior of the dissolution bottle through a first gas conveying pipe and a second gas conveying pipe, and a communicating piece is installed in the ball valve; one of the first gas conveying pipe and the second gas conveying pipe can be communicated with the dissolving bottle through the communicating piece; the switching assembly comprises a driving structure and a triggering structure, and in the rotating process of the stirring part, the driving structure can drive the triggering structure to drive the communicating part to rotate rapidly, so that the communicating state of the first gas conveying pipe and the second gas conveying pipe with the dissolving bottle is changed.

A composition and method for dissolving foulants formed in a monomer production process is provided. The composition may include an amide-containing compound and a solvent. Other ingredients, such as a polymerization inhibitor or a dispersant, may optionally be included in the composition. The amide-containing compound may be, for example, dimethylacetamide. The solvent may be, for example, methanol or toluene. The foulant includes a polymer.

In some aspects, the present disclosure relates to a system for forming a hydrogel composition comprising a first reservoir containing an iodinated polymer composition, a second reservoir containing a buffer diluent solution having a first pH, and a third reservoir containing a buffer accelerator solution having a second pH higher than the first pH, the iodinated polymer composition includes an iodinated polymer having a plurality of cyclic imide ester groups, the buffer diluent solution includes water, a first buffer, and a polyamine compound, and the buffer accelerator solution includes water and a second buffer. Other aspects of the present disclosure relate to methods of forming hydrogel compositions using such systems.

The invention discloses an intelligent dosing device for sewage treatment and a dosing method, and relates to the technical field of sewage treatment dosing, the intelligent dosing device specifically comprises a dosing table, the dosing table is movably connected with a rotary drum, the side wall of the rotary drum is uniformly and symmetrically provided with medicine storage mixing mechanisms, and the top of the dosing table is fixedly connected with a medicine storage mechanism; efficient mixing and dissolving are adopted, the lifting arm driven by the rotating shaft and the stirring ball are unfolded under the action of centrifugal force, the stirring range is controlled in cooperation with the limiting baffle ring, it is ensured that a medicament and a solvent are fully mixed, residues are avoided, meanwhile, the lifting arm rotates to control the position of the whole sliding sleeve, and the rotating speed of the rotating shaft is increased. The sliding sleeve moves to realize falling of a medicament at the top of the medicament mixing tank and automatic opening of a through opening, a matching solvent and the medicament are automatically mixed and dissolved under stirring of the lifting arm, a new round of medicament automatic adding is started by the medicament adding tank on the other side, the operation steps are compact, and the medicament adding precision and efficiency are remarkably improved.

This invention discloses a medical solution preparation machine, comprising: a solution preparation robot mechanism for extracting medication from injection vials and injecting the medication into a solvent bag; an injection vial pretreatment mechanism, including an ampoule processor and / or a vial processor and an output push rod, wherein the ampoule processor and vial processor break the ampoules and open the vials, and the output push rod ejects the processed injection vials; an injection vial input mechanism for connecting to the injection vial transport chain and the injection vial pretreatment mechanism; and a medication supply mechanism for connecting to the medication supplies on the transport chain and the solution preparation robot mechanism. This invention has the following advantages: it can connect to an automated injection drug logistics system to achieve automated transport from the injection warehouse to the solution preparation machine; through the solvent bag transport chain and syringe transport chain of the solution preparation machine's self-contained medication supply mechanism, it achieves continuous supply of solvent and syringes; and in conjunction with a fully automated injection dispensing machine, it realizes full automation of the solution preparation process in a hospital solution preparation center.

The application discloses a preparation method of a woody oil-based oil gel containing a beta' crystal form, and comprises the following steps: walnut oil and tung tree seed oil are mixed according to a mass ratio of (85-90):(10-15), stirring is carried out under the condition of a rotating speed of 55-70 rpm, heating is carried out to 68-72 DEG C, a gelling agent compounded by edible wax and polyglycerol fatty acid ester according to a mass ratio of (4-6):1 is added, stirring is continuously carried out until complete dissolution, a liquid oil gel solution is obtained, direct freezing is carried out under the condition of-10 DEG C to-40 DEG C, then stirring is carried out under the condition of a rotating speed of 150-250 rpm for 3-6 min, and standing is carried out at an environment of 20-25 DEG C for 5-6 days, so that the woody oil-based oil gel is prepared. The oil gel prepared by the method contains stable beta' crystal form, has high oil retention rate, suitable hardness and good oxidation stability, and can replace animal butter or hydrogenated vegetable oil to be applied in baking.

The invention discloses a preparation method of an all-vanadium redox flow battery electrolyte, and belongs to the technical field of batteries. The method mainly comprises the following steps: preparing an initial electrolyte to be optimized, preparing various additives according to a certain concentration and mixing according to the volume of the initial electrolyte, taking out a part of a sample from the standby electrolyte according to a certain volume ratio, putting the sample into a mixing device, heating to a required temperature, adding a mixed additive into the mixing device, and uniformly mixing the mixed additive and the standby electrolyte. And stirring by adopting an ultrasonic device, completely dissolving the additive in the sample until the color is clear and transparent to obtain a concentrated sample, adding the concentrated sample into a storage device of the initial electrolyte, and stirring by adopting mechanical stirring until the two strands of electrolyte are uniformly mixed to obtain the optimized electrolyte. According to the preparation method of the electrolyte of the all-vanadium redox flow battery, the composite additive is added into the electrolyte of the all-vanadium redox flow battery, and the three performance indexes of capacity fading, high-temperature precipitation and weak reaction activity of the electrolyte are improved at the same time.

The invention provides a device and a method for preparing high-purity selenium dioxide, which can effectively remove impurities which have large difference in saturation solubility with selenium dioxide solid phase in liquid phases such as water, ethanol and the like, and realize preparation of high-purity selenium dioxide. According to the invention, a dissolution crystallization method and a similar zone melting mechanism for melting crystallization are unified and expanded to most dissolvable compounds. The device and the method provided by the invention have the advantages of high purity upper limit, low energy consumption, strong applicability and the like.

The present invention describes a method for the production of a spinning dope composition, said method comprising a homogenization involving vigorous mixing of a cellulosic pulp material in alkali solution, vigorous mixing implying supplying a power density to agitators used in the homogenization step of at least 150 kW / m3 (kW supplied to agitators per mixed unit of liquid volume), and thereafter a dissolution involving mixing of the cellulosic pulp material in the alkali solution to obtain a spinning dope composition, preferably the power density supplied to agitators used in the dissolution step is maximum 75 kW / m3 (kW supplied to agitators per mixed unit of liquid volume); and preferably the cellulosic pulp material in alkali solution is kept at a temperature of less than 0°C during the homogenization and during at least part of the dissolution. The present invention is also directed to a system intended for the production of a spinning dope composition.