705results about How to "Accelerated precipitation" patented technology

A set of printing liquids is disclosed comprising a first anionic printing liquid comprising an aqueous vehicle, at least one first colorant, and at least one first anionic polymer; a second anionic printing liquid comprising an aqueous vehicle at least one second colorant, at least one second anionic polymer, and an acid additive having a pKa up to the pKa of the at least first polymer of the first liquid; a third cationic printing liquid comprising an aqueous vehicle, at least one third colorant, at least one third cationic polymer, and a pH in the range from about 2 to about 5; and a fourth anionic printing liquid comprising an aqueous vehicle, at least one fourth anionic dye, and a precipitating agent. More specifically, the present set of printing liquids may find application in ink-jet printing. The set of ink-jet inks provides improved print quality, specifically, reduced bleed; improved edge-acuity, uniform area fills, and color quality; while maximizing lightfastness without sacrificing printing reliability.

A process for the production of metal nanoparticles. Nanoparticles are formed by combining a metal compound with a solution that comprises a polyol and a substance that is capable of being adsorbed on the nanoparticles. The nanoparticles are precipitated by adding a nanoparticle-precipitating liquid in a sufficient amount to precipitate at least a substantial portion of the nanoparticles and of a protic solvent in a sufficient amount to improve the separation of the nanoparticles from the liquid phase.

The invention discloses a method for preparing 5-hydroxymethylfurfural by solid acid catalysis. The method comprises the following steps of taking lignin residue hydrolyzed by biomass as carrier raw material of solid acid; synthesizing the raw material into solid acid through a two-step way of carbonization and sulfonation, so that the waste material is recycled and the problem of disposal of pollutants is solved. In the dehydration reaction of lignin-based solid acid catalyzed fructose and glucose, the yield of 5-hydroxymethylfurfural can be respectively 84% and 68%; after the dehydration reaction, the lignin-based solid acid is easy to separate and reusable, the acid density of the solid acid can be reduced after being reused five times, and the yield of the 5-hydroxymethylfurfural is still higher than 75%. The method provided by the invention can be used for realizing emission without pollution, and is helpful for realizing environment-friendly producing process of 5-hydroxymethylfurfural.

This high-strength steel sheet includes: in terms of percent by mass, 0.03 to 0.10% of C; 0.01 to 1.5% of Si; 1.0 to 2.5% of Mn; 0.1% or less of P; 0.02% or less of S; 0.01 to 1.2% of Al; 0.06 to 0.15% of Ti; and 0.01% or less of N; and contains as the balance, iron and inevitable impurities, wherein a tensile strength is in a range of 590 MPa or more, and a ratio between the tensile strength and a yield strength is in a range of 0.80 or more, a microstructure includes bainite at an area ratio of 40% or more and the balance being either one or both of ferrite and martensite, a density of Ti(C,N) precipitates having sizes of 10 nm or smaller is in a range of 10¹⁰ precipitates/mm³ or more, and a ratio (Hvs/Hvc) of a hardness (Hvs) at a depth of 10 μm from a surface to a hardness (Hvc) at a center of a sheet thickness is in a range of 0.85 or more.

The invention relates to a processing method of stainless steel cold rolling pickling wastewater. The pickling wastewater enters a hexavalent chrome secondary reduction pool after the actions of micro-electrolysis and hexavalent chrome preliminary reduction of a scrap iron filtering pool; the reduced wastewater enters a front-segment precipitation tank after neutralization and aeration, heavy metal sludge is concentrated and dehydrated, and the heavy metal sludge and scrap iron after the use of the scrap iron filtering pool are recycled and used as stainless steel smelting raw materials; middle-segment precipitation is carried out after a primary supernatant acts with a precipitant, and dehydrated and dried fluoride sludge is recycled and used as a metallurgical adjuvant material; final-segment precipitation is carried out after a secondary supernatant continues to act with a flocculating agent to obtain calcium salt which can be used as a building material raw material; and after the three segments of precipitation of acidic wastewater, the final third level supernatant reaches a standard and is discharged through water quality regulation and sand filtering. The invention has the advantages of less investment, low wastewater processing cost, convenient maintenance and the like, and not only can effectively utilize discarded scrap iron of a stainless steel enterprise, but also can greatly lower the subsequent wastewater processing cost and the operating load.

An ink-jet printing system is disclosed comprising a set of ink-jet inks comprising a first anionic ink comprising an aqueous vehicle, at least one first colorant, and at least one first anionic polymer; a second anionic ink comprising an aqueous vehicle; at least one second colorant, at least one second anionic polymer, and an acid additive having a pKa up to the pKa of the at least first polymer of the first ink; a third cationic ink comprising an aqueous vehicle, at least one third colorant, at least one third cationic polymer, and a pH in the range from about 2 to about 5; and a fourth anionic ink comprising an aqueous vehicle, at least one fourth anionic dye, and a precipitating agent. The printing system provides improved print quality, specifically, reduced bleed; improved edge-acuity, uniform area fills, and color quality; while maximizing lightfastness without sacrificing printing reliability.

The invention discloses a freshwater shrimp culture tail water treatment system for treatment of the tail water of a culture pond. The freshwater shrimp culture tail water treatment system comprises:a pair of ecological ditches for preliminary purification of culture tail water, a sedimentation tank for sedimentation to remove granular solids in the culture tail water subjected to preliminary purification in the ecological ditches, a filtration dam for filtering solid particles in the culture tail water subjected to sedimentation treatment in the sedimentation tank, an aeration tank for aeration treatment of the culture tail water subjected to filtration treatment by the filtration dam, a biological purification tank utilizing fungi and animals to remove harmful substances, algae and thelike in the culture tail water subjected to aeration treatment in the aeration tank, and a constructed wetland for effective degradation of pollutants and harmful substances in the culture tail watersubjected to purification in the biological purification tank. The freshwater shrimp culture tail water treatment system provided by the invention can effectively remove solid particle impurities in culture tail water, lower the dissolved nitrogen and phosphorus content, and degrade pollutants and harmful substances. The treated culture tail water can reach the culture tail water discharge standard, and can finally be discharged into external rivers or recycle to culture ponds.

A process for leaching laterite ores containing limonite and saprolite. Sufficient mineral acid is added to a slurry of limonite which is leached at atmospheric pressure to dissolve most of the soluble non-ferrous metals and soluble iron. After adding saprolite the slurry is further leached at a temperature above the normal boiling point and at a pressure above atmospheric pressure for a time sufficient to leach most of the contained nickel in the saprolite and to precipitate most of the iron in solution. The pressure of the slurry is then reduced, and nickel and/or cobalt is subsequently recovered from the leach solution by solvent extraction, resin-in-pulp or other ion exchange, sulfide or hydroxide precipitation, or other recovery method.

An apparatus for generating electricity and desalinating water is disclosed, which utilizes one or more subterranean shafts to convey seawater down to an operating depth of several miles at which electrical generators are driven from turbines to generate electricity conveyed to the surface. A desalinating stage then receives generator water output, and heats this water in response to ambient shaft temperature to distill the water. Desalinated water is coupled to a vertical shaft where it flashes to steam and travels up to steam turbine equipment and then to a condensation facility at the surface which condenses the desalinated steam back into pure liquid water for distribution. Power is also generated from the rising steam as well as converting potential water energy between elevation of condensation facility and the lower elevation of a water distribution facility receiving the desalinated water.

The invention relates to hot-work die steel for an extrusion wheel and a manufacturing method of the die steel. The invention adopts the technical scheme that the manufacturing method comprises the following steps: hot-forging after scrap steel or molten iron and scrap steel are smelted in an electric furnace and are subjected to electroslag remelting or vacuum induction melting and then carry out spheroidizing annealing at a temperature of 700-880 DEG C; quenching at a temperature of 1,020-1,120 DEG C and tempering at a temperature of 530-650 DEG C, wherein the hot-work die steel has a hardness of up to 40-52HRC and a tensile strength of up to 1,850-1,955MPa. The hot-work die steel comprises the following chemical components in percentage by weight: 0.30-0.50wt% of C, 0.80-1.20wt% of Si, 0.2-0.5wt% of Mn, 3.00-5.00wt% of Cr, 1.00-1.50wt% of Mo, 0.70-1.20wt% of V, 0.005-0.03wt% of N and less than 0.030wt% of P, less than 0.030wt% of S and the balances of Fe and inevitable impurities. The steel has the characteristics of low cost, good thermal fatigue property, high heat stability and excellent comprehensive property and can be used for manufacturing the extrusion wheel of a continuously-extrusion-molded coating machine and other hot-work dies.

The invention discloses free-cutting medium-carbon non-quenching and tempering steel for a fracture splitting connecting rod. The microstructure of the free-cutting medium-carbon non-quenching and tempering steel comprises ferrite and pearlite; the free-cutting medium-carbon non-quenching and tempering steel for a fracture splitting connecting rod comprises chemical elements according to mass percents: 0.2-0.55 % of C, 0.35-1.00 % of Si, 0.5-1.70 % of Mn, 0.01-0.09 % of S, 0.03-0.15 % of P, 0.05-0.50 % of Cr, 0.05-0.45 % of V, 0.005-0.030% of N, and the balance Fe and other inevitable impurities. The free-cutting medium-carbon non-quenching and tempering steel for a fracture splitting connecting rod has relatively high intensity; in addition, the steel material disclosed by the invention has excellent cutting machinability and good brittleness splitting decomposition performance, and is suitable for a connecting rod processing technology.

Methods, compositions and kits for concentrating or separating cells containing target nucleic acid are disclosed, especially m mixtures containing the cells and other components such as impurities. The methods can keep a large proportion of the cells intact, allowing the cells to be employed after separation (e.g. cultured) and/or which facilitates the recovery of nucleic acid from the cells. The method employs flocculating agents, such as polyamines or cationic detergents, to form complexes with cells causing them to aggregate and so separated from other components of the mixture. Conveniently, the separation of the aggregated cells can be effected with a solid phase which is capable of binding the cells, such as magnetic beads or filters.

In certain embodiments, the invention relates to an electrochemical device having a liquid lubricant impregnated surface. At least a portion of the interior surface of the electrochemical device includes a portion that includes a plurality of solid features disposed therein. The plurality of solid features define a plurality of regions therebetween. A lubricant is disposed in the plurality of regions which retain the liquid lubricant in the plurality of regions during operation of the device. An electroactive phase comes in contact with at least the portion of the interior surface. The liquid lubricant impregnated surface introduces a slip at the surface when the electroactive phase flows along the surface. The electroactive phase may be a yield stress fluid.

The method discloses a method for removing sodium oxalate in an industrial sodium aluminate solution, which is in particular suitable for removing impurity sodium oxalate in the sodium aluminate solution in the process of producing alumina in a Bayer process. The method comprises the following steps that: a decomposition mother solution is evaporated, condensed and cooled; aluminium hydroxide is added as an inoculating seed in order that a sodium oxalate crystallinesubstance in the decomposition mother solution is separated out and filtered; and the crystallinesubstance is separated, thereby removing the sodium oxalate in the sodium aluminate solution. Through the treatment by the method, the sodium oxalate concentration in the sodium aluminate solution is reduced; the method reduces the influence of the sodium oxalate on the production process, makes for the smoothness of the production in the Bayer process and has marked effect, simple process and good industrial application prospect.

A polymer-free method and self-draining self-cleaning apparatus for treatment of water with high total dissolved solids including optional pretreatment, precipitation/flocculation, and separation. The pH is raised by addition of caustic soda and/or soda ash. In a vertical clarifier silo, the feed is gently mixed to cause dissolved solids to precipitate and agglomerate to form suspended flocculates. The clarifier includes an internal mixer surrounded by a cylindrical tube diffuser. Rotation of the mixer provides gentle dual circulation patterns within the clarifier that allow for flocculates of a predetermined size to settle from suspension. The clarifier may also include one or more vertical recirculation lines to recirculate some of the heavier flocculates at the bottom of the vessel into the mixer chamber to enhance precipitation via the seeding effect. The suspended flocculates are stripped from the feed water in a centrifugal separator. The clarifier silo may be trailer mounted for rapid deployment.

The invention discloses high magnetic induction grain-oriented silicon steel with B800 being more than or equal to 1.94T. The silicon steel comprises the following components in percentage by weight: 0.045-0.075 percent of C, 2.95-3.35 percent of Si, 0.05-0.20 percent of Mn, 0.005-0.015 percent of S, 0.004-0.010 percent of N, 0.03-0.10 percent of Sn, 0.01-0.1 percent of Cu and 0.020-0.034 percent of Als. The production method comprises the following steps: smelting, performing continuous casting to form a blank, and heating the cast blank; performing segmented hot rolling; normalizing and cooling in a dry total-nitrogen atmosphere; performing aging and cold rolling by using a one-step cold rolling method; decarburizing and annealing; performing nitriding treatment; performing conventional coating of a release agent; coiling and performing conventional high-temperature annealing, wherein the annealing atmosphere refers to dry or wet nitrogen or hydrogen or conventional nitrogen and hydrogen mixed gas; and performing conventional stretching, flattening, papplying insulating coatings and annealing. The cast blank is heated at a low temperature, the process application range is wide, and the number of effective inhibitors is controlled, so that the B800 is more than or equal to 1.94T, and P1.7/50 is less than or equal to 0.88W/kg. The silicon steel is used for preparing common transformers, the materials can be saved, and the overload impact resistance can be improved.

The invention discloses a red phosphorus and fire-retarding polyamide composite and a preparation method thereof. The composite comprises the following components in percentage by mass: 30 to 97 percent of polyamide, 1 to 40 percent of red phosphorus, 1 to 60 percent of filler, 0.001 to 15 percent of corrosion stabilizer, 0.001 to 15 percent of precipitation stabilizer and 0 to 50 percent of other assistant. The total mass percentage of the components is 100 percent. The fire-retarding thermoplastic composition is prepared by mixing a specific stabilizer and other components and regulating the ratio of the components. The prepared fire-retarding thermoplastic composition can greatly reduce precipitation amount of phosphorus and improve stability, and therefore can ensure a material has high fire-retarding performance and mechanical strength. Formed products with small wall thickness are divided into a V-0 class and a V-1 class according to Underwriters Laboratories (UL)94 standards, and the phosphorus precipitation stability is improved. The fire-retarding thermoplastic composition may be sheets, plates or formed products, and is particularly applicable to electrical appliances and electronic parts. Concretely, the fire-retarding thermoplastic composition can be used to make lamps, such as lamp holders and plugs, connecting vessels, coil holders, capacitor cases or connectors, circuit breakers, relay shells and reflectors.

The invention discloses a traditional Chinese medicine aldehyde-removing air purifying agent and a preparation method thereof. The air purifying agent is prepared from the following raw materials in parts by weight: 15-20 parts of holy basil, 10-15 parts of fiveleaf gynostemma herb, 10-15 parts of mint, 16-22 parts of folium eucalypti, 12-18 parts of cortex cinnamomi, 5-10 parts of fernleaf hedge bamboo, 8-14 parts of ficus benjamina, 15-20 parts of pomegranate leaves, 10-15 parts of green bonnie flowers, 6-12 parts of marigold, 13-19 parts of tuberose, 10-15 parts of litsea cubeba, 5-10 parts of mangnolia officinalis, 11-17 parts of radix dichroa, and 8-14 parts of honeysuckle. The aldehyde-removing air purifying agent is prepared from pure plants, can enable indoor toxic dust to be quickly precipitated, and can quickly remove methanal and other residual hazardous substances indoors or in furniture, the removal ratio reaches over 96%, and the secondary pollution is avoided; in addition, the harmful bacteria in indoor air can be inhibited and killed, and the pungent peculiar smell can be quickly removed; the air purifying agent contains no chemical preparation, is free from corrosion, non-toxic, free from contamination, convenient to use, safe and environmental-friendly, and causes no toxic or side effects on human bodies.

The present invention relates to a method for cell expansion. In the method, preferably a cell culture product is used, such as a microcarrier, or other adherent cell culture surface, comprising degradable polysaccharide, preferably starch, modified with small molecular weight cell-binding ligands. This allows recovery (detachment) of adhered cells to be aided by degradation of the culture surface with enzymatic agents, such as amylase. The method for cell expansion comprises the following steps: a) adding cells, culture medium and cell culture surface comprising a degradable polysaccharide with guanidine group containing ligands to a bioreactor; b) expanding said cells by adherent cell culture; and c) aiding the detachment of said cells by exposing them to a polysaccharidase to degrade the culturing surface.

The invention discloses a kitchen waste resourceful treatment process. The kitchen waste resourceful treatment process comprises the steps of carrying out pretreatment on collected kitchen wastes at first, wherein the pretreatment comprises sorting, crushing and cooking kitchen wastes at a high temperature; then carrying out three-phase separation on the pretreated kitchen wastes to separate out crude fat, wastewater and solid slag, and collecting the crude fat in a unified manner; adding a biological agent in the solid slag after three-phase separation, carrying out aerobic fermentation and secondary fermentation, after separating water vapor generated by fermentation, carrying out wastewater disposition and emission on a water portion and the wastewater obtained from three-phase separation, and carrying out waste gas disposition and emission on a waste gas portion. The invention provides the improved kitchen waste resourceful treatment process, the yield of the crude fat of the kitchen wastes is greatly improved, high resourceful earnings can be gained, meanwhile, an aerobic fermentation period can be shortened, the quality of compost is improved, and near zero emission of odor and wastewater is realized.

The invention discloses a method for improving the utility ratio of V-N micro-alloying high strength steel vanadium alloy, which aims at molten steel chemical composition range of V-N micro alloy high strength steel to control the V/N ratio within more than or equal to 4 and less than or equal to 6. The separation quantity of vanadium carbonitride in V-N micro-alloying high strength steel is increased through controlling the V/N ratio, thereby reducing using amount of alloy element V and improving the alloy utility ratio of V. The invention has the advantages that: the manufacturing process is easy to control, the comprehensive performances of steel plate can be stably acquired and simultaneously the adding quantity of vanadium can be reduced by 35 percent to 50 percent through controlling V/N ratio, thereby reducing alloying production cost and improving competitive strength of products.

The invention provides a can steel sheet having satisfactory surface appearance and having workability, appearance property after working and high yield that can meet demands on complicated can forming, and a manufacturing process thereof. To be more specific, according to the invention, a slab having a composition containing, in weight %, C: more than 0.005% and equal to or less than 0.1%, Mn: 0.05-1.0% is subjected to hot-rolling at a finishing temperature of 800 to 1000° C., to coiling at 500 to 750° C., to cold-rolling, followed by continuous annealing at a recrystallization temperature or higher and 800° C. or lower, and then to box annealing at a temperature higher than 500° C. and equal to or lower than 600° C. for 1 hr or longer. The steel sheet has preferably a structure containing ferrite as a principle phase and having a mean grain diameter of 10 mum or less and further containing 0.1-1% by weight of pearlite grains each having a grain diameter of 0.5-3 mum. To obtain satisfactory surface appearance, it is preferable that the steel contains: Ti: 0.015-0.10%, Al: 0.001-0.01%, and a total of 0.0005-0.01% of one or two members of Ca, REM, and S-5x((32/40)Ca+(32/140)REM) of 0.0014% or less.