1115 results about "Colloid" patented technology

The invention relates to the technical field of analysis of physical and chemical properties of soil, in particular to a dry farming soil fertility rapid detection and fertility improvement method, which comprises the following steps: sorting a colloidal phase and a dissolved phase of a humic acid complex based on density difference and dielectric property difference through a gradient centrifugation and dielectrophoresis enriched physical field synergistic separation technology; a two-channel detection time sequence is optimized by adopting a genetic algorithm, a non-overlapping time sequence signal flow is generated by taking a signal interference suppression ratio as a fitness function, and time domain cross interference is suppressed. A programmable resistance-capacitance compensation model is constructed, parallel capacitor array parameters are dynamically adjusted to correct electrochemical phase angle offset, and a three-dimensional fertility distribution curved surface and a residual map are generated in combination with a Kriging interpolation model. On the basis of residual spectrum spatial distribution characteristics, a cross-linked slow-release system is deployed to improve the organic matter binding capacity of a humic acid deficiency area, a mesoporous zeolite-based passivator is applied to regulate and control an ion migration path, a closed-loop feedback mechanism is formed through dynamic phase response monitoring, and accurate detection and directional remediation of soil fertility are achieved.

The invention relates to the field of civil engineering waterproof materials, in particular to a nano bentonite-polymer composite material with high salt tolerance and a preparation method thereof, and the nano bentonite-polymer composite material is especially suitable for a sodium-based bentonite waterproof blanket in a saline soil area or a marine environment, and the preparation method comprises the following steps: (1) preparing nano bentonite lamellar colloidal dispersion liquid; (2) introducing and mixing an electrostatic screening agent and a polymerizable monomer; (3) carrying out in-situ free radical polymerization reaction; and (4) post-treatment and finished product preparation. By constructing a three-dimensional interpenetrating hierarchical structure composed of a covalent grafted polymer network, a physically anchored electrostatic screening agent and a stripped bentonite nanosheet layer, effective protection of a bentonite core anti-seepage unit is realized, so that the adaptability and long-term stability of the material under a complex water quality condition are remarkably improved.

The invention discloses a high-pressure belt conveyor low-cost sludge dewatering technology, and relates to the technical field of sludge dewatering, the technology comprises the following steps: S1, in a pretreatment stage, adding a ferric chloride agent and destroying a sludge colloid structure; s2, in the conditioning stage, lime powder is added to adjust the pH value, and a porous skeleton structure is constructed; s3, adding a polyacrylamide medicament in a flocculation stage to form a compact floc; s4, a high-pressure belt filter press is used for mechanical dehydration in the dehydration stage; s5, recovering the filtrate for redissolving the medicament; s6, performing dynamic linkage optimization of chemical dosing and filter pressing parameters through a dynamic chemical dosing algorithm of the control system; the dosage of chemicals is effectively reduced, the sludge dewatering effect is improved, the sludge dewatering treatment cost is reduced, and the cyclic utilization of resources is realized; the technical problems that an existing sludge dewatering technology is too high in agent cost, low in agent matching and combination reliability and insufficient in technology adaptability are solved.

The invention discloses a preparation method of a high-adsorbability aluminum hydroxide adjuvant for livestock, which comprises the following steps: when an aluminum chloride solution reacts with alkali liquor, generating a colloidal suspension by combining pH two-step adjustment with dispersant addition; and after instant high-speed shearing and room-temperature aging, performing ultrafiltration purification to remove salts, and finally performing moist heat sterilization to obtain the suspension morphological adjuvant. The adjuvant is high in antigen adsorption rate, low in 72-hour desorption rate, large in specific surface area, uniform in particle and suitable for vaccines of pigs, cattle and poultry, and the problems that a traditional adjuvant is low in adsorption rate and poor in stability are solved.

The invention relates to the technical field of preparation of medical supplies, in particular to a surgical membrane and a preparation process. During specific use, firstly, a polyurethane base membrane is selected and subjected to plasma treatment; spraying a nano SiO2 dispersion liquid containing a photoinitiator on the surface of the treated polyurethane base film, and then performing ultraviolet patterning irradiation to form a micro-bulge structure to obtain a base material layer; projecting the colloidal fluid to a temperature gradient mask through a digital micromirror device, so that the colloidal fluid is subjected to regional thermal polymerization on the substrate layer to form an intelligent adhesive layer with viscosity gradient; by adopting an aerosol jet printing technology, super absorbent fibers and polyvinyl alcohol-borax dynamic crosslinking hydrogel are co-deposited to form a drainage layer, so that the technical problems that a surgical membrane prepared by a surgical membrane preparation mode in the prior art is inflexible in adhesion and poor in surface structure performance, and a preparation process is difficult to accurately control are solved.

The invention provides a 180 DEG C-resistant microcapsule type cementing wall-fixing agent for water-based drilling fluid as well as a preparation method and application thereof, and belongs to the technical field of drilling. The preparation method of the wall fixing agent comprises the following steps: (1) respectively adding the macromolecular hydrophilic colloid and the emulsifier into deionized water, and stirring until the macromolecular hydrophilic colloid and the emulsifier are completely dissolved to obtain a water phase; (2) adding phenolic resin, the MUF prepolymer solution and nano SiO2 into an organic solvent under a stirring condition, and uniformly stirring to obtain an oil phase; (3) adding the oil phase obtained in the step (2) into the water phase obtained in the step (1), and carrying out shear emulsification to obtain an oil-in-water emulsion; and evaporating to remove the organic solvent in the system, filtering, washing, and drying to obtain the product. Under the multi-element synergistic effect of hydrogen bonds or coordinate bonds, Van der Waals force and the like, the microcapsule type cementing wall-fixing agent can accelerate the interface to form a compact cemented network structure, the cementing strength of rock particles is remarkably improved, and the purpose of strengthening the stability of a well wall is achieved.

The invention discloses a sludge treatment method and system, and relates to the field of solid waste treatment, and the method specifically comprises the following operation steps: S1, multi-frequency resonance pretreatment: destroying a sludge colloid structure through stepped mechanical vibration: collapsing an extracellular polymer network at a low frequency, breaking down microbial cell walls at an intermediate frequency to release intracellular water, pathogenic bacteria are inactivated through a high-frequency cavitation effect; s2, performing electrochemical in-situ flocculation; s3, gradient pressure dehydration; s4, low-temperature mineralization stabilization; and S5, vacuum condensation and recovery. According to the sludge treatment method and system, through stepped low-frequency, medium-frequency and high-frequency mechanical resonance, the colloid structure of the sludge can be directionally damaged, the fluidity of the sludge is remarkably improved, chemical conditioners are remarkably reduced, agent residues and secondary pollution are avoided, pathogens are physically inactivated through the high-frequency cavitation effect, and the treatment effect of the sludge is improved. Micro-nano oxygen bubbles are synchronously generated to strengthen free radical oxidation, and a sterile environment is created for subsequent mineralization.

The invention relates to the technical field of water treatment, and discloses an aluminum-based composite silicon removal agent and application thereof. The aluminum-based composite silicon removal agent comprises a component A and a component B, the component A is sodium metaaluminate; the component B comprises one or more of crystalline aluminum chloride, polyaluminum chloride and polyaluminum sulfate. The two components in the aluminum-based composite silicon removal agent can form multi-stage aluminum form distribution of'multi-core-mononuclear-colloid 'in wastewater, so that a complete silicon removal path of'pH regulation and control, charge neutralization, adsorption complexing, bridging flocculation and chemical precipitation' is constructed, and efficient removal of silicate radicals can be realized. The composite silicon removal agent does not need to accurately adjust the pH value of the system, the requirement for operation precision is low, operation is easy, and the dosage of the agent is small.

Even when used for polishing a semiconductor wafer provided with a silicon nitride film, there is provided sulfonic acid-modified colloidal silica capable of forming a highly flat polished surface at high speed. Sulfonic acid-modified colloidal silica, wherein the sulfur content of the silica particles is 700 mass ppm or more and less than 3000 mass ppm per 1 g of the silica particles, the sulfur content in the solvent is 250 mass ppm or less per 1 g of the solvent, and the content of coarse particles having a particle size of 0.2 μm or more contained in the silica particles is 10,000,000 particles / mL or less when the silica particle concentration is 1 mass%.

Disclosed in the present invention is a method for in-situ NH4I-assisted preparation of CsPbI3 colloidal nanoplateles, comprising the following steps: S1. respectively preparing a lead iodide precursor solution, an ammonium iodide precursor solution, and a cesium oleate precursor solution; and S2. mixing the lead iodide precursor solution with the ammonium iodide precursor solution under stirring, adding the cesium oleate precursor solution for reaction to obtain a nanoplatele stock solution, and purifying and separating the nanoplatele stock solution to obtain CsPbI3 nanoplateles. In the present invention, in the method for the in-situ NH4I-assisted preparation of CsPbI3 colloidal nanoplateles, NH4I is used for in-situ replication synthesis of the CsPbI3 nanoplateles, the regulation of the growth kinetics of a system is achieved, the reaction process is more controllable, and the synthesized nanoplateles have a narrower peak width at half height, and a more uniform phase distribution, meeting requirements of light emitting in a red light range.

The application discloses a thickened oil viscosity reducer for a main viscosity contribution component of colloid and a preparation method thereof. The thickened oil viscosity reducer comprises the following components in percentage by weight: diethylene glycol methyl ether 25-35%, propylene glycol formate 15-25%, dispersant 5-8%, chelating agent 2-4%, anti-coking agent 0.5-1%, anti-swelling agent 1-2% and corrosion inhibitor 1-2%; and the balance is water. The application is a polar + non-aromatic hydrocarbon solvent system; completely avoids high-risk substances such as nonylphenol polyoxyethylene ether, petroleum sulfonate sodium and organic chlorine; is designed in pertinence and can effectively inhibit metal-induced asphaltene bridging; can withstand working conditions from normal temperature to 250 DEG C and up to 300 DEG C; thermal stability is significantly enhanced, and residual carbon after aging is lower than 8%; viscosity reduction efficiency is higher; the system is more stable, flexible in compounding and suitable for field construction.

The invention discloses a solvent deasphalting extraction tower, which comprises a tower body, which is internally provided with a heating settling section, an extraction section and a deoiled asphalt collection area in sequence from top to bottom; an inner cylinder is arranged in the tower body, an annular space is formed between the inner cylinder and the tower wall, and asphaltene and colloid are separated out from the extracted deasphalted oil solution in the heating settling section and are downwards settled in the annular space; the heat exchange pipe is spiral and is arranged in the annular space, a heat exchange medium used in the heat exchange pipe has the same property as a solvent used for deasphalting in the tower body, and the temperature of the solvent used as the heat exchange medium is higher than that of the solvent used for deasphalting in the tower body. The heat exchange medium is replaced by the heated solvent, so that the heat exchange requirement of the top of the extraction tower can be met, and the problem that the discharged material of the extraction tower carries steam or heat-conducting oil and other existing heat exchange media can be effectively avoided; the heat exchange pipe is arranged in the annular space between the inner cylinder and the tower wall, so that colloid and asphaltene separated out after heat exchange can move downwards from an independent channel, and the solvent-oil ratio per unit volume in the extraction section filler is effectively increased.

The invention discloses a preparation device of pseudo-boehmite, which relates to the technical field of chemical equipment and comprises a reaction kettle, an electrode column, a grating and a stirring shaft. The invention also discloses a preparation method of the pseudo-boehmite preparation device. The preparation method comprises the following steps: material addition, colloid generation, aging, gibbsite conversion and repeated charging. The inner kettle and the outer kettle are arranged, a sodium aluminate solution and carbon dioxide are subjected to a neutralization reaction in the inner kettle to generate pseudo-boehmite colloid, part of gibbsite generated due to slow reduction of the pH value in the reaction process is precipitated at the bottom end of the inner kettle, and the pseudo-boehmite colloid can directly enter the outer kettle to be subjected to aging treatment after being generated; gibbsite can be heated at the bottom end of the inner-layer kettle to be converted into monohydrate gibbsite, and the monohydrate gibbsite can enter the outer-layer kettle along with subsequent pseudo-boehmite to be aged, so that the gibbsite can be directly converted and recycled in the preparation process of the pseudo-boehmite.

The application discloses a preparation method of a catalyst for liquid-phase refining of crude octanol, and the preparation method comprises the following steps: (1) mixing pretreated fly ash and pseudo-boehmite, adding deionized water and nitric acid, stirring until a colloid is formed, drying the colloid, mixing the dried colloid with kaolin, and obtaining a carrier through kneading, extrusion molding, drying and calcination; (2) taking a nickel salt, a manganese salt and a zinc salt as active components, taking a calcium salt as an auxiliary component, dissolving the active components and the auxiliary component in deionized water to obtain a salt solution, adding n-hexane into the salt solution and stirring uniformly to prepare an impregnation solution, immersing the carrier in the impregnation solution, and obtaining the catalyst through washing, drying and calcination. The catalyst prepared by the method is mainly used in a liquid-phase refining reaction process of crude octanol, and has high activity stability and selectivity.

The present invention relates to a colloidal composition comprising unmodified, discrete cellulose microparticles, such as a colloidal emulsion or colloidal gel, a method of preparing the colloidal composition and uses of the colloidal composition and cellulose particles The colloidal composition comprises a continuous phase and a dispersed phase, wherein the continuous phase is a liquid; wherein the dispersed phase comprises cellulose microparticles which are dispersed in the continuous phase of the colloidal composition, wherein the cellulose microparticles have a mean average particle length of from 0.1 to 20 µm a mean average particle width from 0.05 to 1.3 µm, and a maximum thickness not exceeding 0.2 µm determined by scanning electron microscopy; and an aspect ratio of length / width of 1 to 25, and wherein the colloidal composition has a flow index n of ≤ 1 determined by a rheometer at NTP (normal temperature (25°C) and pressure (1 atm)).

The invention provides a treatment device for wastewater generated after dyeing of a high-elasticity fabric. The treatment device comprises a coarse filter tank; the adjusting tank is arranged on one side of the coarse filtering tank. According to the treatment device for wastewater generated after dyeing of the high-elasticity fabric, fiber impurities, yarn broken ends and large-particle suspended solids are accurately intercepted from the coarse filtering tank of the pretreatment module, disperse dyes and colloid impurities are efficiently adsorbed and settled in the reaction tank, the sedimentation tank and the air floatation tank by means of a specially-made coagulant and coagulant aid combination, and the high-elasticity fabric is obtained. An anaerobic and aerobic biological reaction tank of the biochemical treatment module is used for deeply degrading organic pollutants in wastewater, and a fine filtering tank and a disinfecting tank of the deep treatment module are used for ensuring that the water is clear and transparent and the biological safety reaches the standard; various pollution indexes such as chromaticity, suspended matters, organic matters and microorganisms of the wastewater can be accurately attacked, so that the treated wastewater stably reaches or even is superior to the discharge standard, the purification efficiency is greatly improved, and the energy-saving and emission-reducing concept is met.

A polishing liquid which reduces the occurrence of erosion and scratches on a surface to be polished of an object to be polished having a cobalt-containing film after polishing in a case where the polishing liquid is applied to CMP of the object to be polished is provided. In addition, a chemical mechanical polishing method using the above-mentioned polishing liquid is provided. The polishing liquid is a polishing liquid used for chemical mechanical polishing of an object to be polished having a cobalt-containing film. The polishing liquid includes colloidal silica, an organic acid, a specific nitrogen-containing aromatic heterocyclic compound and hydrogen peroxide, and has a pH of 8.5 to 12.

The invention relates to nano W-Re-Y2O3 alloy powder with small particle size and a preparation method of the nano W-Re-Y2O3 alloy powder with small particle size, and the nano W-Re-Y2O3 alloy powder with small particle size comprises the following components in percentage by mass: 79-94 wt.% of W, 10-20 wt.% of Re and 1-5 wt.% of Y2O3, the small-particle-size nano W-Re-Y2O3 alloy powder is prepared through a sol-gel method and specifically comprises the steps that firstly, citric acid is dissolved in deionized water, then ammonium metatungstate, ammonium perrhenate and yttrium nitrate are added, water bath heating is conducted, and stirring is conducted till colloid is formed; drying and calcining the colloid to obtain nano oxide powder; and putting the nano oxide powder into a reaction furnace, and reducing the nano oxide powder by using hydrogen to obtain W-Re-Y2O3 powder. According to the method, W and Re are combined on the atomic scale through a sol-gel method, Y2O3 particles are generated in situ during calcination, the Y2O3 particles are evenly mixed in the powder, the average particle size of the prepared alloy powder particles is about 12 nm, and the reduced powder does not need to be subjected to follow-up treatment. The preparation method is simple, the raw material cost is low, and large-scale production is easy to realize.

To provide colloidal silica in a single nano-size or a small particle size close to the single nano-size, in which its agglomeration does not substantially occur, and a method of producing the same.SOLUTION: The colloidal silica is characterized by being surface modified, having a BET diameter of not larger than 12 nm, and being not substantially agglomerated. The method of producing the colloidal silica is characterized by including a raw material preparation step of supplying easily decomposable organo-silicate to a reaction liquid including a hydrolysis catalyst consisting of an organic amine to make the organo-silicate react with the reaction liquid, to prepare raw material colloidal silica having a BET diameter of not larger than 12 mn, a concentration adjustment step of adjusting the solid content concentration of the raw material colloidal silica to not greater than 13 mass% and adjusting the concentration of the alcohol formed in the raw material preparation step to 1 to 25 mass%, a modification step of modifying the raw material colloidal silica of which concentration has been adjusted, and a concentration step of concentrating the content of residual organic solvent in the colloidal silica which has been modified, to be not greater than 1 mass%.SELECTED DRAWING: Figure 1

The invention provides a waste liquid treatment device of a gas turbine thermal power plant, and relates to the technical field of waste liquid treatment.The waste liquid treatment device comprises a filter box, the filter box is fixedly installed on the side wall in a box body, a filter assembly is arranged in the filter box, and a heating mechanism is arranged at the bottom in the box body; a liquid outlet in the bottom of the filter box is communicated with the heating mechanism through a first liquid conveying pipeline, and the reaction precipitation mechanism is arranged on one side of the heating mechanism. The filter box is arranged in the box body to cooperate with the filter assembly to remove large-particle impurities in waste to be treated, and then the filtered waste liquid is conveyed into the heating mechanism through the first liquid conveying pipeline to be heated, so that the waste liquid is better treated by cooperating with the reaction precipitation mechanism; suspended matters, colloidal substances and the like in the waste liquid are condensed into relatively large particles to complete precipitation, and the heating mechanism not only can improve the oxidation reaction efficiency, but also can recycle steam which is easy to obtain and relatively low in cost in a gas turbine thermal power plant for heating, so that efficient utilization of energy is realized.

The invention provides a printing and dyeing wastewater concentration method and system, and the method comprises the steps: carrying out pretreatment on desizing wastewater, so that suspended particles and colloidal impurities in the wastewater are intercepted and adsorbed by a filtering medium; carrying out buffering and flow regulation on the pretreated wastewater, and meanwhile, carrying out heat exchange on hot condensate water generated in the printing and dyeing production process and the pretreated wastewater; raising the temperature of the wastewater to 40 DEG C or above; pressurizing the heated wastewater and then carrying out membrane separation and concentration treatment, forming dialysate by micromolecular substances and part of water, and gradually accumulating intercepted macromolecular substances to form concentrated solution; when the concentration of the concentrated solution reaches the discharge standard, pollutants are treated by adopting a chemical precipitation method and a biological treatment method, or useful substances are recycled. The wastewater concentration process flow is optimized, the wastewater is filtered, intercepted and adsorbed through multiple media, a good water inlet condition is provided for concentration treatment, modified starch and PVA in the wastewater are effectively concentrated, and the follow-up treatment volume and difficulty are reduced.

The invention discloses an anti-corrosion method of a cathode plate for zinc electrodeposition in hydrometallurgy, and relates to the technical field of corrosion prevention of cathode plates. The method comprises the following steps: firstly, automatically carrying out roughing treatment on two side edges and a liquid level position of the cathode plate by using roughing equipment; then cleaning the surface of the negative plate by using a surface cleaning agent; then, the diluent and the ZL263 (A + B) colloid are used for brushing the negative plate for the second time; applying a high-molecular anti-corrosion material on the colloid; and then the negative plate is fixed and shaped by using a fixing transverse tool. According to the device, the two side edges and the liquid level of the negative plate are automatically subjected to roughening treatment by using the roughening equipment, so that a macromolecular anticorrosive material and the negative plate can be bonded more stably, and the negative plate to which the macromolecular anticorrosive material is applied can be fixed and shaped through the fixing transverse tool; therefore, the polymer anti-corrosion material is more tightly attached to the negative plate, and the anti-corrosion performance is improved.

The present invention discloses a monodisperse lignin colloidal sphere, a preparation method, and an application as a structural color material. The method comprises the following steps: first, lignin is steamed under alkaline conditions, and then ultrafiltration is performed to remove low-molecular-weight and high-molecular-weight lignin to obtain a uniform medium-molecular-weight lignin, which is then reacted with a glycidyl ether compound to further regulate polar groups such as hydroxyl groups, and then short-chain alcohols are used to separate alcohol-insoluble lignin. The alcohol-insoluble lignin is dissolved in an organic solvent-water mixed solvent, water is added dropwise to cause phase separation, and finally, centrifugal sedimentation is performed to obtain monodisperse lignin colloidal spheres. The preparation process of the method of the present invention is green and environmentally friendly, the organic solvents used can be recycled and reused, and the product yield reaches more than 70%. The obtained monodisperse lignin colloidal spheres can be used as a structural color material.

The utility model relates to a sewage treatment device. The sewage treatment device comprises a tank main body and a sludge reflux pump, the tank main body comprises a settling area and a filtering area, the sludge reflux pump is used for reusing dense medium particles, and the suspension concentration of the dense medium particles in the reactor is maintained, so that the effluent quality is ensured. Sewage enters the reaction hopper through the water inlet pipe, various colloids and suspended particles in the sewage are coagulated into large dense flocs and form a suspended sludge layer, and the sludge layer close to a normal pressure state is used for replacing a filtering medium in a conventional pressure filtering process to filter sludge; sludge is discharged into the sludge discharge area at the bottom of the reaction hopper through the sludge guide hopper and can return into the reaction hopper again through the sludge reflux pump to be fully reacted, and supernatant liquid flows to the peripheral filtering area through the top of the baffle to be filtered, so that the requirement of pretreated water quality is met. The sewage treatment device can be used for treating heavy sewage, and flocs and sludge in the reaction process are not prone to polluting and blocking parts.

The present invention relates generally to methods of producing, using, and storing stable aqueously dispersed superhydrophobic compositions made from these compositions to provide superhydrophobic treatments on a range of porous, semi-porous, and non-porous target materials and surfaces as well as combinations of these materials and surfaces. More particularly, the present invention provides stably dispersed waterborne superhydrophobic compositions comprising colloidal silica or hydrophobically-modified silicon dioxide (i.e., silica) and one or more additional agents and / or compounds. When the compositions of the present invention are applied (e.g., via spray deposition, immersion, liquid application, and the like) to a suitable target material and / or surface the target is imparted with a durable (super)hydrophobic coating.

The invention relates to the technical field of water treatment, and discloses a silicon powder conditioner and a preparation method thereof, the silicon powder conditioner comprises 20-40% of an inorganic coagulant, 5-15% of an organic polymer coagulant, 3-10% of a natural polymer coagulant aid, 10-25% of a demulsifier, 2-8% of a synthetic coagulant aid, and the balance of water. The demulsifying agent is compounded with various coagulants and coagulant aids, the demulsifying agent preferentially destroys an oil-water interfacial film, releases wrapped silicon powder and eliminates the'colloid protection 'effect of oil stains on the surface of the silicon powder, and the inorganic and organic coagulants rapidly perform electrical neutralization and adsorption bridging on exposed silicon powder particles to form floc which is good in settling performance and easy to filter. Meanwhile, the inorganic coagulant provides positive charges and efficiently neutralizes the microfine silicon powder with negative charges; cPAM with high molecular weight and PDADMAC with strong cations form long-chain bridging and patching effects, so that fine particles with the particle size of 1-5 microns are specially captured, and meanwhile, larger-particle silicon powder is improved to form floc which is easy to filter; the natural polymer further increases the volume and density of the floc, and prevents the floc from being broken under shearing.

The invention relates to a rapid filtering device and method for potassium fluoborate production, aiming at the characteristics of slurry containing KBF4 crystal (D50 = 20-50 [mu] m), colloidal metaboric acid (HBO2) and potassium fluosilicate (K2SiF6) impurities prepared by a hydrofluoric acid-boric acid method, the device adopts a sliding block type filter frame and inflatable elastic filter cloth structure, and is matched with a rotary scraper and a hydraulic turning plate mechanism; the method comprises the following steps: controlling the temperature of reaction slurry with the solid content of 15-30wt% to 38-58 DEG C, pumping the reaction slurry into a device, breaking KBF4-K2SiF6 heterogeneous aggregates through 5-22rpm rotary stirring, triggering 0.48-0.82 MPa inflatable extrusion to peel boric acid colloid when the filtering pressure difference reaches 0.3-0.6 MPa, driving a scraper to radially feed 5-18mm crushed pressed cakes after a gas source is closed, further separating crystals and wrapping mother liquor through secondary extrusion (0.42-0.68 MPa), and finally obtaining the high-purity KBF4-K2SiF6 / KBF4-K2SiF6 / KBF4-K2SiF6 / KBF4-K2SiF6 / KBF4-K2SiF6 composite material. And finally, a filter cake with the water content of 15-25wt% is discharged by a hydraulic overturning guide plate (the inclination angle of 25-40 degrees). Compared with a traditional process, the method has the advantages that the B2O3 residual quantity is reduced to be less than or equal to 0.15 wt% (reduced by more than 50%), the filtering efficiency is improved by 2.1-3.2 times, and the method is suitable for a ten-thousand-ton potassium fluoborate production line.

The invention relates to the technical field of coal chemical industry sewage treatment, and discloses a coal chemical industry heavy oil sewage treatment system which comprises a pretreatment module, an adjusting tank, a chemical precipitation module, a biological treatment module, a membrane separation module, a sludge treatment module, an environment-friendly chemical treatment module, a waste gas treatment module, a disinfection module and a recycling and discharging module. The pretreatment module is used for removing particulate matters and suspended matters in sewage; the adjusting tank is used for balancing sewage flow and water quality fluctuation; the chemical precipitation module is used for removing suspended matters and colloidal substances in the sewage through chemical agent precipitation; the biological treatment module is used for degrading organic pollutants in the sewage through microorganisms. Through the automatic screen mesh system and the rotational flow grit chamber, particulate matters and grit in sewage are effectively removed, the load on a subsequent treatment module is reduced, and the removal efficiency of suspended matters and colloidal matters is remarkably improved through precise medicament addition and the design of the efficient inclined plate sedimentation tank.

Compositions for forming protective coatings can include a first group of compounds, where each compound of the first group is a fatty acid, fatty acid ester, or fatty acid salt having a carbon chain length of at least 14 carbons. The compositions can optionally include a second group of compounds selected from fatty acids, fatty acid esters, fatty acid salts, and combinations thereof, wherein each compound of the second group has a carbon chain length from 7 to 13 carbons. At least some of the compounds of the first group can function as emulsifiers, allowing the composition to be dissolved, suspended, or dispersed in a solvent. At least some of the compounds of the second group can function as wetting agents in order to improve the surface wetting of items to be coated when solutions, suspensions, or colloids that include the compositions are applied to the items.

The invention relates to the technical field of waterproof coiled materials, in particular to a preparation method of a high-cold-weather-resistant graphene modified asphalt waterproof coiled material, which comprises the following steps: adding first matrix asphalt, second matrix asphalt, graphene and engine oil, heating and stirring; adding SBS-T6302H, stirring and mixing at a target temperature according to preset stirring parameters, adding rubber powder, and passing through a colloid mill to obtain a mixture; transferring the mixture into a stirring tank, adding fly ash, stirring, detecting the final viscosity, transferring the obtained product into a glue preparation tank, stirring, molding, cooling and sizing to obtain the waterproof coiled material. Determining the colloid particle size and the colloid viscosity in the stirring process, and constructing a uniformity model according to the preset stirring parameters, the colloid particle size, the colloid viscosity and the paddle diameter to determine the dispersion standard coefficient of the modifier; collecting a coiled material surface image to determine defect characteristics so as to adjust a basic cooling temperature; and performing a low-temperature flexible test to determine a test qualification rate, and determining an adjustment mode of the preset stirring parameters according to the dispersion standard coefficient and the test qualification rate.