994results about How to "Prevent precipitation" patented technology

An electrochlorination and electrochemical system for the on-site generation and treatment of municipal water supplies and other reservoirs of water, by using a custom mixed oxidant and mixed reductant generating system for the enhanced destruction of water borne contaminants by creating custom oxidation-reduction-reactant chemistries with real time monitoring. A range of chemical precursors are provided that when acted upon in an electrochemical cell either create an enhanced oxidation, or reduction environment for the destruction or control of contaminants. Chemical agents that can be used to control standard water quality parameters such as total hardness, total alkalinity, pH, total dissolved solids, and the like are introduced via the chemical precursor injection subsystem infrequently or in real time based on sensor inputs and controller set points.

The invention relates to 700MPa high strength hot rolling Q&P steel and a manufacturing method thereof. The steel has the following chemical components in percentage by weight: 0.15-0.40% of C, 1.0-2.0% of Si, 1.5-3.0% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 0.3-1.0% of Al, less than or equal to 0.0065% of N, 0.005-0.015% of Ti and the balance of Fe. The yield strength is greater than or equal to 70MPa, the strength of extension is greater than or equal to 1300MPa, and the ductility is greater than 10%. According to the invention, through a reasonable compound design, based on common C-Mn steel components, austenite crystal is refined by micro Ti treatment by improving the content of Si to inhibit separation of cementite, so that the austenite transformation kinetics in the air cooling process is accelerated by improving the content of Al. Meanwhile, a hot continuous rolling process is matched with a sectional cooling process, so that proeutectoid ferrite+martensite+retained austenite tissues are obtained. The cost of the alloy is greatly lowered.

The invention discloses a solar water evaporation purification and decomposition device which comprises a water supply line, a float and heat insulation layer, an evaporation layer and a photothermalconversion and solute barrier layer which are connected in sequence from bottom to top. The water supply line enables water to pass through the float and heat insulation layer, and the water is pumpedinto the evaporation layer by virtue of a capillary action; solar energy absorbed by the photothermal conversion and solute barrier layer is converted into heat, and water is heated to be vaporized into water vapor from the evaporation layer; due to pore channel volatilization of the photothermal conversion and solute barrier layer, partial water vapor is decomposed to produce hydrogen and oxygen; since the photothermal conversion and solute barrier layer contains a hydrophobic part and is not infiltrated by water, the solar energy can directly heat a heat-absorbing material only, but not heat water, so that high photothermal conversion efficiency is realized; and meanwhile, the solute in the water is prevented from being separated out on the membrane, and sea water desalination, sewage purification and water decomposition can be realized. Due to the design of a hydrophilic/hydrophobic double-layer evaporation structure, the solar water evaporation purification and decomposition device with high photothermal conversion efficiency and high stability is obtained.

A hygiene or wiping product includes at least one ply of a fibrous web containing cellulose fibers and having a graphical pattern of at least first and second areas. The ply contains a coloring compound providing a coloration of the ply in the first area. The coloring compound is at least partly chemically destroyed in the second area so that the ply is less colored in the second area than in the first area. A method for producing such a ply includes the steps of providing a fibrous web containing a coloring compound, which provides a uniform coloration in at least a portion of the web, and applying a bleaching agent to a part of the colored portion of the web to at least partly decolor the web in the part generating a pattern of at least first colored and second less colored areas.

Uncoated particles of reversed cubic phase or reversed hexagonal phase material containing an active disposed within are provided. The uncoated particles have an ionic charge that is sufficient to stabilize them in dispersion in a liquid, e.g. a polar solvent. The active that is disposed within the particles may be, for example, a pharmaceutical or nutriceutical compound.

A total nutrient liquid fertilizer containing amino acids comprises, by weights, 6-12 parts of N, 1-6 parts of P, 3-10 parts of K, 1-3 parts of Ca, 1-3 parts of Mg, 9-13 parts of Zn, 2-10 parts of Mn, 1-2 parts of B, 0.5-2 parts of Cu, 0.2-0.5 parts of Mo, 3-10 parts of Fe, 10-15 parts of amino acids, 1-10 parts of a plant growth regulator, 2-5 parts of an organic chelating agent and 30-40 parts of water. The liquid fertilizer provides comprehensive nutrition for plants, enhances the freeze, drought, salt and disease resistance of the plants, enhances the synthesis and translocation of substances in the plants, promotes the formation of adenosine triphosphate (ATP), promotes the photosynthesis and protein synthesis, induces the formation of chlorophyll, promotes the cell protoplasm flow, improves the cell vitality and accelerates the growth of the plants.

The invention discloses a flucarbazone-Na compounded herbicide which comprises an active component I (flucarbazone-Na), an active component II and auxiliary components, wherein the active component II is one or a combination of several of mesosulfuron methyl, isoproturon, chlortoluron, pyroxsulam, Clodinafop-propargyl, carfentrazone-ethyl, tribenuron-methyl, fluroxypyr, methoxone, 2,4-D-butyl ester, dicamba, bromoxynil, thifensulfuron methyl, amidosulfuron, bensulfuron-methyl, flumetsulam, fluoroglycofen-ethyl and florasulam; the auxiliary components comprise an auxiliary agent and also comprise one of a filler and a solvent; the auxiliary agent is one or a combination of two of an emulsifying agent, a dispersant, a wetting agent, a disintegrant, an agglomerant, an antifreezing agent and a thickening agent; the mass sum of the active component I (flucarbazone-Na) and the active component II is 1%-85% of the total mass of the flucarbazone-Na compounded herbicide; and the mass ratio of the active component I to the active component II is (1:20)-(20:1). The flucarbazone-Na compounded herbicide disclosed by the invention is a novel herbicide for preventing and removing weeds in a wheatland.

The invention relates to a halogen-free intumescent flame retardant wire/cable insulating material composition. The formula of the materials of the composition is as follows: 60 to 80 percent by mass of polyolefin; 15 to 35 percent by mass of halogen-free intumescent flame retardant; 2 to 10 percent by mass of synergist; 1 to 10 percent by mass of compatilizer; 0.1 to 1 percent by mass of lubricant; and 0.1 to 1 percent by mass of antioxidant. Compared with the prior art, the composition has the advantages that: dosage is low, the flame-retardant property is high, no harmful substances are released and the color cannot be changed in the process of processing and use, and precipitation resistance and water resistance are good. The composition has good flame-retardant property and toughness, and is particularly suitable for use in the fields of wires/cables, electronics/electricity, house decoration, automobile industry and the like which have strict requirement on flame retardance.

The invention relates to a silicon nitride film etching solution, comprising first silicone compound, whose silicone atom is dependently combined with over three hydrophilic functional groups, and second silicone compound, whose silicone atom is dependently combined with one or two hydrophilic functional groups.

The invention provides an emulsion stabilizer for a vegetable protein beverage, the vegetable protein beverage as well as a preparation method thereof. The emulsion stabilizer for the vegetable protein beverage comprises 20-40wt% of glycerin monostearate, 10-30wt% of sucrose fatty acid ester, 5-10wt% of sodium stearyl lactate, 10-25wt% of xanthan gum, 10-20wt% of microcrystalline cellulose, 5-10wt% of konjac glucomannan and 5-10wt% of sodium hexametaphosphate. The invention further discloses the preparation method of the emulsion stabilizer for the vegetable protein beverage as well as use thereof in the vegetable protein beverage. Meanwhile, the invention further provides the vegetable protein beverage and the preparation method thereof. The emulsion stabilizer for the vegetable protein beverage provided by the invention can effectively prevent the vegetable protein beverage from unhealthy phenomena such as fat floating, precipitation, flocculation, layering and the like, thereby guaranteeing that the product is uniform and stable in expiration date.

The invention discloses a neutral oil removal rust remover, which is mainly prepared from deionized water and the following components by mass fraction: 4-8% of physical dispersing agent, 8-10% of chemical chelating agent, 4-6% of oil-removing emulsifier and 1-4% of corrosion inhibitor. The preparation method disclosed by the invention comprises the following steps: firstly, preparing the components according to the proportioning requirements; weighting the ingredients in the chemical chelating agent to put into a container; adding the deionized water to evenly agitate, so as to obtain a solution A; adding the physical dispersing agent and the corrosion inhibitor to the solution A; agitating to obtain a solution B; additionally, adding the prepared components of the oil-removing emulsifier to the container; adding the deionized water to dissolve; adding a functional additive to obtain a solution C; and evenly mixing the solution B with the solution C under the agitation condition to obtain the neutral oil removal rust remover. By adopting the product disclosed by the invention, the oil and rust removal work can be quickly and efficiently finished, and the neutral oil removal rust remover is free of damage to a substrate.

The invention provides a pre-lithiation treatment process of a silicon-based negative electrode. The pre-lithiation treatment process comprises the steps of paste uniformization, coating, metal lithium electrodeposition by a two-step constant-current pulse deposition method, DMC soaking, drying and the like. The invention simultaneously provides a pre-lithiation treatment device of the silicon-based negative electrode. The pre-lithiation treatment device comprises an electrolytic groove, a working electrode, two pieces of counter electrodes and a wire. With the adoption of the pre-lithiation treatment process and device, the initial charging and discharging efficiency of a silicon-carbon negative electrode can be effectively improved, and the cycle lifetime of the silicon-carbon negative electrode can be prolonged.

The invention discloses a water treatment method utilizing complex-ferrous-activated persulfate oxidation. The treatment method comprises the following steps: (1) firstly determining the pH value and CODcr (chemical oxygen demand) value of wastewater to be treated; (2) adding a complexing agent which is selected according to the pH value to the wastewater, and then adding ferrous ion to the wastewater for sufficiently mixing; and (3) adding a persulfate to the wastewater treated in the step (2) according to the CODcr value for full reaction to obtain purified wastewater. The method is applicable to the wastewater with various pH values; by using the method, the acid feeding cost is greatly reduced and the treatment cost of per ton of wastewater is lowered by approximate 20%; in addition, complex ferrous can slowly release free ferrous ion, thus ensuring that organic pollutants in the wastewater are durably and efficiently purified by a persulfate oxidation method and increasing the pollutant removal efficiency by 20-30%; and the method has the advantages of good durability and high efficiency, is environmentally-friendly, is easy to operate, and has great application potential in the field of environmental pollution treatment.

The present invention provides a high-strength steel sheet useful for applications to automobile steel sheets and the like and having excellent deep drawability, a tensile strength (TS) of as high as 440 MPa or more, and a high r value (average r value≧1.2), and a process for producing the steel sheet. The steel sheet has a composition containing, by % by mass, 0.010 to 0.050% of C, 1.0% or less of Si, 1.0 to 3.0% of Mn, 0.005 to 0.1% of P, 0.01% or less of S, 0.005 to 0.5% of Al, 0.01% or less of N, and 0.01 to 0.3% of Nb, the Nb and C contents in steel satisfying the relation, (Nb/93)/(C/12)=0.2 to 0.7, and the balance substantially including Fe and inevitable impurities. The steel microstructure contains a ferrite phase and a martensite phase at area ratios of 50% or more and 1% or more, respectively, and the average r value is 1.2 or more.

The invention discloses an environment-friendly aluminum cleaning agent and a preparation method thereof. The cleaning agent is composed of the following components in percentage by weight: 20% to 25% of inorganic acid, 10% to 20% of organic acid, 10% to 18% of surfactant, 8% to 15% of osmotic agent, 6% to 18% of emulsifier, 2% to 8% of antifoaming agent, 5% to 8% of complexing agent, and 25% to 30% of water. In the provided cleaning agent, the using amount of hydrochloric acid, sulfuric acid, and nitric acid is reduced, the aluminum parts are washed by medium-strong acids and organic acids, and the cleaning agent has a very good oil stain and rust removing ability. The cleaning agent is acidic, the pH value of the cleaning agent is 2.1 to 5.6, and the cleaning agent can well remove the oxide scale on the aluminum surface. Because the acidity of the organic acids is weak, the over-corrosion on work tools and acid volatilization, which can harm the workers' health, are effectively avoided, and the cleaning effect is not influenced at the same time. Moreover the adopted organic acids are easy to decompose, and thus the cleaning agent is environment-friendly.

A composition is provided; the composition is particularly suitable as a car wash detergent composition. The car composition includes an anionic surfactant and a hard water anti-precipitant mixture. The hard water anti-precipitant mixture includes a dispersant polymer and at least one of a sheeting agent and a humectant. Methods for providing and using a ready-to-use composition are provided. The composition is particularly suited for dilution with hard water and at cold temperatures.

The invention discloses a compound water soluble fertilizer used for citrus crops, a preparation method and an application method. The compound water soluble fertilizer used for citrus crops is mainly used in plant nutrition field, and comprises the following components: an amino acid raw material, macroelements P and K, secondary elements Mg and Ca, trace elements Fe, Mn, Zn, B, Mo and Cu, a beneficial element Si, an auxiliary agent, a PH conditioning agent and an aqueous solution. The preparation method is characterized in that composite amino acid chelates Mn, Fe, Cu, Mg, Ca and Zn at normal temperature of 15-35 DEG C and prepares the water soluble fertilizer with six metallic elements, the reasonable fertilizing can be carried out at different growth period of the crops, the balance supplement of a plurality of nutrient elements required by citrus crops can be realized, and the output and quality of the citrus crops can be increased.

The invention relates to an engine coolant, which comprises the following compositions in portion by weight: 100 portions of glycol, 60 to 160 portions of deionized water, 1.0 to 1.6 portion of sodium benzoate, 1.0 to 1.4 portion of sodium tetraborate, 0.1 to 0.5 portion of sodium nitrate, 0.5 to 0.9 portion of phthalic acid, 0.3 to 0.6 portion of sodium silicate, 0.03 to 0.06 portion of silicate stabilizer, 0.3 to 0.4 portion of sodium hydroxide, 0.1 to 0.3 portion of pyrrodiazole, 0.01 to 0.06 portion of defoaming agent and 0.005 to 0.02 portion of coloring agent; the engine coolant is characterized in that: the coolant does not contain molybdate, amine, nitrite, phosphate and other substances which are harmful to the environment and human body and has excellent anticorrosive and protective function on red copper, brass, steel, cast iron, soldering tin, cast aluminum and other metals of a cooling system and magnesium alloy adopted in an engine; and the coolant has strong anti-hard water capacity and low cost, meets the requirement of SH/T0521-1999 standard and is applicable to industrialized production.

The invention discloses a method for charging a lead-acid storage battery able to shorten charging time and making charge current safe and comfortable, dividing the whole charging course into at least three charging stages, each of which charges the lead-acid storage battery in turn in constant current and voltage modes. And the method is mainly used to charge lead-acid storage batteries.

The invention discloses a mesosulfuron-methyl compound herbicide which consists of mesosulfuron-methyl as active ingredient I, active ingredient II and auxiliary ingredients; the active ingredient II is the combination of one or more of flucarbazone-Na, isoproturon, chlortoluron, pyroxsulam, 2-methyl-4-chlorophenoxy acetic acid, 2,4-D butyl ester, dicamba, bromoxynil, amidosulfuron, bensulfuron-methyl, flumetsulam, fluoroglycofen-ethyl and florasulam; the auxiliary ingredients consists of adjuvant and one of filler and solvent, and the adjuvant is the combination of one or more of emulsifying agent, dispersing agent, wetting agent, disintegrant, binding agent, antifreezing agent and thickening agent; the sum of the weight of the mesosulfuron-methyl as the active ingredient I and the weight of the active ingredient II is 1 to 85 percent of the total weight of the mesosulfuron-methyl compound herbicide; and the weight ratio of the active ingredient I to the active ingredient II is 1:20 to 20:1. The mesosulfuron-methyl mixed herbicide is novel herbicide for wheatlands.

The invention discloses high-strength and high-toughness hot-rolled wear-resistant steel and a preparation method thereof. The high-strength and high-toughness hot-rolled wear-resistant steel comprises the following chemical ingredients in percentage by weight: 0.20-0.50% of C, 0.8-2.0% of Si, 1.5-3.0% of Mn, not greater than 0.015% of P, not greater than 0.005% of S, 0.02-0.08% of Al, not greater than 0.006% of N, not greater than 30 ppm of O, 0.005-0.015% of Ti, 0.5-2.0% of Ni, and the balance of Fe and inevitable impurities, wherein the sum of Mn and Ni is 3.2-3.6%; the microscopic structure is composed of lath martensites and retained austenites, and the volume percentage content of the retained austenites is 5.0-15.0%; and the high-strength and high-toughness wear-resistant steel obtained by the processes of hot continuous rolling and rapid quenching has a tensile strength of greater than 1500 MPa, a yield strength of 1150-1400 MPa, a thickness of 3-12 mm, a good ductility (of greater than 10%), and a good low-temperature impact toughness (impact energy of 38-48 J at minus 20 DEG C), and shows excellent strong-plastic matching.

The intelligent temperature adjustment textile hydrolyae and polymerize the ethyl-orthosilicate, the absolute ethyl alcohol and the distilled water silicon dioxide network structure gelatin in normal temperature. Then joins the alcohol type changeing material to make bonds change material. Finally mix the bonds change material and bond then spread on the textile's surface. This invention's intelligent temperature adjustment textile is insert change material into the high thermal conductive silicon dioxide's network gelation to make nanometer even micronanometer bonds change material. Then spread the bonds change materialon the textile surface. Thus do not ceeate the oil bath influence on the textile and the bonds change material is stable and has relitave high change enthalpy and sutible temparature adjustment sector. Moreover, the preparation method's technological process is simple, the requests is low, and the reaction process is easy to control.

The invention relates to an aqueous dull finishing coat with scratch resistance, a preparation method and a use method thereof. Main varnish is prepared from the following components in parts by weight: 60-80 parts of acrylic acid emulsion, 0.5-3 parts of thickening agent, 0.1-1.0 part of defoaming agent, 5-10 parts of glass powder, 0.1-1.0 part of foam inhibitor, 3-8 parts of filming auxiliary agent, 0.1-1.0 part of dispersant, 0.1-0.5 part of wetting agent, 1.0-3.0 parts of extinction powder, 0.5-3.0 parts of wax pulp and 1-20 parts of water; a curing agent of the aqueous dull finishing coat is mixed by 80 parts by weight of aliphatic polyisocyanate and 20 parts by weight of propylene glycol methyl ether acetate; and the ratio of curing agent NCO to main varnish OH is 2.5. The main varnish is prepared by the steps of adding the acrylic acid emulsion into a container, adding the thickening agent, the defoaming agent, the foam inhibitor and the dispersant under stirring, and dispersing at 500RPM for 5-8 minutes till being uniform; afterwards, after adding the extinction powder, the glass powder and the wax pulp under stirring, dispersing at 1000RPM for 15 minutes till the fineness is not more than 25mum; and then, adding the wetting agent, the filming auxiliary agent and the water, dispersing at 500RPM for 10 minutes till being uniform and filtering by a sieve with 100 meshes so as to obtain the aqueous dull finishing coat. The aqueous dull finishing coat is used by mixing in the weight mixture ratio of the main varnish to the curing agent to tap water being 100:50:20. A varnish film has very good hardness, toughness, scratch resistance, abrasion resistance and weather resistance, can be recoated without blanching and has especially good chemical resistance.

A method of extracting zinc from a sulphidic ore is provided which comprises bioleaching the ore in a heap with acidophilic microorganisms to produce a pregnant leach solution which is recovered from the bottom of the heap. An integrated process which comprises subjecting the pregnant leach solution to neutralization and solvent extraction to produce a concentrated zinc solution is also provided. Zinc may be recovered from the concentrated solution by means of electrowinning, either in the absence or presence of manganese. Alternatively zinc may be recovered in the form of a zinc compound.

The invention relates to a chemical mechanical polishing composite of stainless steel surface polishing; the polishing composite is composed of grinding material, oxidizer, polishing accelerant, metalchelator, penetrant, and surfactant; the invention is characterized in that: aluminum oxide sol, namely hydrated alumina dispersed in acidic aqueous solution in sol state, is added, the hydrated alumina can be boehmite, fake boehmite, diaspore or gibbsite.

The invention discloses rare-earth-type 0Cr17Ni4Cu4Nb martensitic precipitation-hardening stainless steel. The rare-earth-type 0Cr17Ni4Cu4Nb martensitic precipitation-hardening stainless steel is characterized by comprising the following chemical components in percentage by weight: less than or equal to 0.07% of C, less than or equal to 1% of Si, less than or equal to 1% of Mn, less than or equal to 0.035% of P, less than or equal to 0.03% of S, 3.00-5.00% of Ni, 15.5-17.5% of Cr, 3.00-5.00% of Cu, 0.15-0.45% of Nb, 0.05-0.25% of Re and the balance of Fe and belongs to the field of alloy steels. The invention also discloses a preparation method of the rare-earth-type 0Cr17Ni4Cu4Nb martensitic precipitation-hardening stainless steel. The preparation method comprises the steps of smelting, casting, carrying out electroslag remelting, casting ingots, forging or rolling, carrying out solution treatment and the like. The rare-earth-type 0Cr17Ni4Cu4Nb special steel, which is disclosed by the invention, as one of precipitation-hardening martensitic stainless steel, has the characteristics of high strength, high hardness, corrosion resistance and the like and is suitable for various technical fields, such as chemical machinery, food machinery, papermaking machinery, aerospace and marine.

The invention relates to high-quality H13 rear earth mold steel and a production method thereof, and belongs to the technical field of mold steel making. The high-quality H13 rear earth mold steel provided by the invention comprises the following ingredients based on weight percent: 0.37-0.42% of C, 0.80-1.20% of SiO, 0.20-0.50% of Mn, 5.00-5.50% of Cr, 1.20-1.75% of Mo, 0.80-1.20% of V, not greater than 0.025% of P, not greater than 0.005% of S, 0.001-0.010% of rear earth element, and the balance of Fe. The production method of the mold steel provided by the invention comprises the following steps of electric furnace smelting, ladle furnace LF refining, VD furnace vacuum degassing, rear earth-magnesium-calcium composite line feeding, argon-protected pouring, forging, annealing and thermal treatment. The mold steel provided by the invention has the following great advantages of high purity, high tissue uniformity, high mechanical property and isotropy, effectively improves the service life of a mold, and reduces production cost.

In the mining process, linear, branched, hyperbranched or dendrimeric polyols or mixtures thereof are employed as process stabilization aids for aqueous solutions and, or suspensions of metal salts. A specific application area of the polyols is the stabilization of bauxite liquor in the Bayer process of producing alumina from bauxite.

The invention relates to the field of desilting equipment, in particular to a pipe desilting device for municipal engineering. The pipe desilting device comprises a shell, idler wheels, a brush head and a liquid storage box, wherein electric telescopic rods are mounted at the top and the bottom of the shell; the idler wheels are mounted at the top ends of the electric telescopic rods; a first telescopic mechanism is rotatably connected with the right side wall of the shell; the side wall of the first telescopic mechanism is hinged to a support rod; the brush head is hinged to the free end of the support rod; the liquid storage box is mounted in the shell; a stirring mechanism is mounted in the liquid storage box; a T-shaped water pipe is mounted on the left side wall of the shell; sprayersare mounted at the upper and lower ends of the T-shaped water pipe; and a rotary mechanism is further mounted on the side wall of the shell. Through arranging the angle-adjustable brush head, the brush head better fits the inner wall of a pipeline to clean the inner wall of the pipeline and scrape sludge attached to the inner wall of the pipeline; and through arranging the rotatable sprayers, thespraying range is greatly enlarged, so that the spraying dead angle is reduced to spray cleanout fluid more uniformly.

An aqueous aluminum brazing composition containing an organic binder and zinc-based flux which prevents precipitation of the zinc-based flux having a large specific gravity while securing excellent brazeability. The thixotropic index of the brazing composition is adjusted to 1.01-1.20 by adding (meth)acrylic acid/(meth)acrylate copolymer emulsion to the brazing composition as a precipitation inhibitor in an amount of 0.03-1.50 wt % of 100 wt % of the brazing composition. Since the (meth)acrylic acid/(meth)acrylate copolymer emulsion is used as the precipitation inhibitor in a specific amount instead of other types of compounds used for powder-containing paint such as ultrafine particle silica, poly(meth)acrylate, or polyvinyl alcohol, precipitation of the zinc-based flux can be prevented without impairing brazeability.