85results about How to "Efficient precipitation" patented technology

Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m²/g have been found to be highly electropositive. When dispersed in water they are able to attach to and retain electronegative particles. When combined into a composite filter with other fibers or particles they can filter bacteria and nano size particulates such as viruses and colloidal particles at high flux through the filter. Such filters can be used for purification and sterilization of water, biological, medical and pharmaceutical fluids, and as a collector/concentrator for detection and assay of microbes and viruses. The alumina fibers are also capable of filtering sub-micron inorganic and metallic particles to produce ultra pure water. The fibers are suitable as a substrate for growth of cells. Macromolecules such as proteins may be separated from each other based on their electronegative charges.

A system for separating contaminants from fluids provides a modular mobile continuously operable site configurable multi-phase filtering system having an oil water separator 100, a dwell tank 220, a waste tank 250, an electrocoagulator 120 having plural concentrically aligned perforated tubular sacrificial electrodes, a first and a parallel second particulate filter 300A, 300B, a first and parallel second step-down membrane filter 400A, 400B, an optional ultra filtration filter 500, an optional reverse osmosis filter 600, a mixing station 700 and a totalizer and sensor array 900 to analyze, filter and treat fluids by separating contaminants and particulates and adjusting chemical content to meet specifications desired which will allow the use and re-use of the filtered fluid and the separated contaminants.

Disclosed is a high-strength bolt having a tensile strength of 1,200 N/mm² or more and superior in delayed fracture resistance and relaxation resistance, prepared by wire-drawing a bolt steel containing the following elements: C: 0.5 to 1.0% (mass %, the same shall apply hereinafter), Si: 0.55 to 3%, Mn: 0.2 to 2%, P: 0.03% or less (but not 0%), S: 0.03% or less (but not 0%), and Al: 0.3% or less (but not 0%), and containing proeutectoid ferrite, proeutectoid cementite, bainite and martensite at a total areal rate of less than 20% and pearlite in balance; cold-heading the wire into a bolt shape; and then bluing the bolt in a temperature range of 100 to 500° C.

Process for preparing a purified immunoglobulin preparation. The process comprises the steps of subjecting a crude immunoglobulin solution to caprylic acid treatment, removing protein aggregates and viruses from the immunoglobulin solution, subjecting the immunoglobulin solution to anion exchange chromatography in order to purify the immunoglobulin, filtering the immunoglobulin solution thus obtained on a virus-removal filter to produce an eluate containing immunoglobulin, and recovering the immunoglobulin. By combining caprylic acid treatment and precipitation with a protein precipitant the level of aggregated proteins and viruses is effectively reduced and a truly virus safe preparation is provided after filtration.

An ionic conditioning process and molecular arrangement for removing colloids from an aqueous solution, where the aqueous solution is transported to and/or through several conditioning zones for purification. The process utilizes vessels within which stages of conditioning are performed and are monitored. The conditioning processes perform ionic, chemical and physical conditioning to the colloids in the aqueous solution causing the colloids to be transformed into a state that reacts with a polymer flocculating agent and is thereby precipitated rapidly and efficiently for removal. The effluent as well as the precipitate can be further treated with conventional means to meet certain specifications for discharge and disposal.

A system for separating contaminants from fluids provides a modular mobile continuously operable site configurable multi-phase filtering system having an oil water separator, a dwell tank, a waste tank, an optimizer, a first and a parallel second particulate filter, a first and parallel second step-down membrane filter, and optional ultra filtration filter, an optional reverse osmosis filter, a mixing station and a totalizer and sensor array to analyze, filter and treat fluids by separating contaminants and particulates and adjusting chemical content to meet specifications desired which will allow the use and re-use of the filtered fluid and the separated contaminants.

The invention discloses a method for recycling platinum and palladium from precious metal acid solution by adopting a reducing precipitation method, and belongs to the technical field of metallurgy. The method comprises the following steps: enabling a reducing precipitation agent formed by sodium formate and sodium borohydride to react with material liquid containing platinum and palladium, so as to precipitate platinum and palladium; filtering precipitation; dissolving base metals in the precipitation by dilute sulphuric acid; further, dissolving precipitation residues containing platinum and palladium by dilute sulphuric acid and sodium chlorate; finally, obtaining chlorination liquid containing a great amount of platinum and palladium, concentrating the chlorination liquid, and refining to recycle platinum and palladium through performing the process of precipitating platinum by ammonium chloride on the chlorination liquid. According to the invention, the technology is simple and low in cost, and generates little pollution; the precipitation rate of platinum and palladium precious metals can reach over 99.9%, the platinum family metal recycling ratio is greatly improved, and the comprehensive utilization of precious metal resources is realized.

According to the present invention, there is provided an anticorrosive treating concentrate usable for an exposed surface of a metal (e.g. copper or a copper alloy), containing an anticorrosive agent and a precipitation inhibitor and having a pH of 4 to 12 when used in the form of an aqueous solution, in which concentrate the anticorrosive agent is a triazole type compound and/or a derivative thereof and is contained in a concentration of 0.05 to 20% by weight and the precipitation inhibitor is a compound having at least one nitrogen atom but no metal atom in the molecule.

The invention discloses a stirring type Chinese herbal medicine cooking equipment, which comprises a support seat, a support frame is connected to both sides of the upper end of the support seat, a first rack is connected to the upper end of the support frame, a first gear is meshed in the middle part of the front end of the first rack, and a first gear is engaged with the first rack. The middle part of the lower end of the first gear is connected with the stirring shaft, the right side of the upper end of the support base is connected with the driving box, the second gear is arranged inside the driving box, the lower end of the second gear is meshed with the second rack, and the left end of the second rack is connected with the right swing rod. The cooking barrel is connected to the left side of the right swing lever, the left swing lever is connected to the lower side of the left end of the cooking barrel, and the middle part of the left end of the left swing lever is covered with a return spring, and the left end of the return spring is connected to a rotating block. There is a heating ring inside the cooking barrel. The upper end of the side is connected with a hopper, and the middle part of the bottom end of the cooking barrel is connected with a discharge hopper. The present invention realizes the rotation of the stirring shaft, so that the active ingredients inside the traditional Chinese medicine can be effectively separated out, and at the same time realizes the left and right reciprocating shaking of the cooking barrel.

The invention provides a processing system for changing chrome tanning wastewater into a resource and a processing technique thereof. The invention relates to a processing method for the chrome tanning wastewater and provides the processing system and the processing technique for changing the chrome tanning wastewater into the resource at normal temperature and pressure with low processing cost and high recycling utilization ratio. The processing system comprises a grating filter pre-settling device, a chemical reaction settling pond, a pressure filter, an acid leaching reaction pool, a filter and a liquid collecting cabin, wherein an output port of the grating filter pre-settling device is connected with an input port of the chemical reaction settling pond; the output port of the chemical reaction settling pond is connected with the input port of the acid leaching reaction pool through the pressure filter; the output port of the acid leaching reaction pool is connected with the liquid collecting cabin through the filter; a pH monitoring adjusting device is arranged on the chemical reaction settling pond; and a heating device is arranged on the acid leaching reaction pool.

The invention discloses a wear-resistant transparent glaze that is prepared from the following raw materials in percentage by weight: 3 to 7 percent of nanoscale anorthite, 20 to 30 percent of albite,18 to 28 percent of fused quartz, 6 to 10 percent of kaolin, 40 to 50 percent of transparent frit, 0.01 to 0.5 percent of dispersing agent and 0.01 to 0.1 percent of plasticizer. By introducing special raw material components such as nanoscale anorthite, fused quartz and transparent frit, the raw material components of the glaze can play a synergistic effect in the conventional fusing and firingprocess, so a large amount of anorthite crystalline phases can be efficiently generated, and then the hardness, wear resistance and light transmission performance of the glaze are effectively and synchronously improved.

The invention relates to a heavy metal chelating agent as well as a preparation method and application thereof, the preparation method comprises the following steps: taking a polyene polyamine molecule as a raw material, carrying out unilateral protection on the end group primary amine of the polyene polyamine molecule by using di-tert-butyl dicarbonate ester, carrying out chain extender cross-linking reaction on the polyene polyamine molecule and a chain extender, then removing the unilateral protection of the cross-linked polyene polyamine, and finally, carrying out xanthan acylation reaction on the cross-linked polyene polyamine and carbon disulfide to obtain the heavy metal chelating agent. The preparation method of the heavy metal chelating agent is high in operability and simple in process, and the prepared chelating agent contains more chelating sites, has high reaction activity and high chelating performance, and can be used for efficiently precipitating heavy metals.

The invention provides a medium and low coal temperature separate dry distillation system and method. The dry distillation system comprises a spiral pushing medium and low temperature external heating dry distillation device and a low temperature internal heating rotary kiln dry distillation device. A spiral pushing dry distillation chamber in the spiral pushing medium and low temperature external heating dry distillation device is arranged in a combustion chamber of the spiral pushing medium and low temperature external heating dry distillation device, burned smoke in the combustion chamber is circulated back into a rotary kiln cylinder, and solid-state materials in the rotary kiln cylinder are supplied into the spiral pushing dry distillation chamber. For the first time, dry distillation of coal is divided into two or more stages according to temperature, an internal heating rotary kiln and the external heating type spiral pushing dry distillation device are combined organically to achieve dry distillation; the rotary kiln is used for performing winnowing dust removal, preheating drying and dehydration on raw coal, and the external heating type spiral pushing dry distillation device realizes a high-efficiency medium and low temperature dry distillation process and precipitation of high calorific value raw gas and a tar product; the advantages of internal and external heating dry distillation equipment are fully combined, dry distillation efficiency, heat utilization efficiency and dry distillation product quality are greatly improved in a brand new mode, and the market popularization prospect is broad.

The pickling equipment equipped with a pickling tank 3 for performing pickling of the steel sheet 1 containing silicon by successively passing the steel sheet 1 and a circulating route 5 for circulating the pickling solution in the pickling tank 3 is provided with ultrasonic vibrator transducers 10, 14 and 18 which oscillate ultrasonic waves of different frequencies f 1, f 2, and f 3 to the pickling solution circulating in the circulating route at separation tanks 9, 13 and 17 such that the SiO2particles of the grain sizes different from each other of the respective frequencies f 1, f 2, an f 3 are removed by flocculation and settlement. Thus, SiO2particles in a pickling solution generated during pickling of various silicon steel sheets can be decreased, and long-term operation and the period of maintenance work can be prolonged and productivity is high.

The invention relates to an efficient precipitation device and process with ammonia nitrogen removal capacity. The whole set of precipitation device comprises a coagulation tank, a flocculation tank,an inclined plate sedimentation tank and a slime separator sequentially connected in a sewage treatment direction; a feeding hole for a coagulant and an ammonia nitrogen adsorption material is also arranged at a feeding pipe of the coagulation tank; a bottom outlet of the slime separator is further connected with a regeneration tank; the bottom of the regeneration tank is also connected with a grit-water separator; and an upper outlet of the grit-water separator returns to be connected with the regeneration tank, and a lower outlet of the grit-water separator returns to be connected to the feeding pipe of the coagulation tank. Compared with the prior art, the efficient precipitation device is good in treatment effect, easy to regulate, capable of reducing the floor area while realizing theremoval of suspended matters and ammonia nitrogen, wide in applicability and remarkable in economic benefit.

The present invention relates to a ground milling machine, in particular a road milling machine, for removing ground material, comprising a machine frame having a chassis, a milling drum supported on a machine frame, and a transport device having at least one conveyor belt, which is configured for conveying removed ground material in a conveying direction away from the milling drum to a discharge point, as well as to a method for operating a ground milling machine. One aspect of the present invention is to provide an electrostatic precipitator, which reduces the dust pollution.

The invention provides a special medicament for removing hardness ions in underground water. The medicament comprises sodium hydroxide, powdery kaolin and polyaluminum chloride. A preparation method for the special medicament has the advantages of easiness, wide sources of raw materials and low cost; the special medicament is safe to use, can realize rapid and highly efficient precipitation of calcium carbonate and magnesium hydroxide sediments, has a fast treatment speed and a good treatment effect in treatment of hardness ions in underground water and has good application prospects.

A water softening module has a case body which includes cover members secured to their respective ends of a cylindrical case. A pair of electrodes are provided in the case body. A fibrous medium is located in contact with a water-outlet-side face of the electrodes. The fibrous medium has a stacked structure constituted of a first fiber layer and a second fiber layer, which are electrically conductive. The first fiber layer is positioned in contact with the upstream side of the second fiber layer, and the first fiber layer is positioned in contact with the downstream-side face of the electrodes. The specific surface area of the first layer is smaller than that of the second fiber layer.

The invention relates to a semi-fluidized bed type Fenton oxidation wastewater treatment device. The device is sequentially provided with a stirring-mixing region, a semi-fluidized bed reaction region, a radiation-flow settlement region, a filler reaction region and a baffling semi-range settlement region. According to the device, the semi-fluidized bed reaction region and the filler reaction region are arranged, and a Fenton catalyst and an iron-carrying 3A molecular sieve catalyst are respectively utilized as fillers; a semi-fluidized bed has high transmission efficiency, and the problem ofloss of the catalyst can be effectively avoided; and a 3A-molecular sieve filler is wide in pH application range and has efficient catalytic efficiency to degradation-resistant organic matters. The device has the advantages of simple structure, easiness in operation, good treatment effect and the like and can be conveniently arranged in each stage of the water treatment flow.

A secondary battery capable of decreasing progression temperature of a precipitation-dissolution reaction of aluminum is provided. A cathode 11 and an anode 12 are separated from each other by a separator 13. An electrolyte with which the separator 13 is impregnated contains an alkyl sulfone (R1—S(═O)₂—R2: each of R1 and R2 represents an alkyl group) and a solvent (having a specific dielectric constant of 20 or less) together with an aluminum salt. A content of the solvent is equal to or larger than 30 mol % and is less than 88 mol %, and a mol ratio (a content of the aluminum salt/a content of the alkyl sulfone) is equal to or larger than 4/5 and is less than 7/3.

The invention discloses an internal and external heating type medium and low temperature powdered coal temperature division dry distillation system and method. The system comprises a spiral pushing medium and low temperature external heating dry distillation device and a low temperature internal heating rotary kiln dry distillation device, wherein a spiral pushing dry distillation chamber in the spiral pushing medium and low temperature external heating dry distillation device is arranged in a combustion chamber of the spiral pushing medium and low temperature external heating dry distillation device, combustion smoke in the combustion chamber is directly supplied to the interior of a rotary kiln cylinder, and solid materials in the rotary kiln cylinder are supplied to the interior of the spiral pushing dry distillation chamber. Dry distillation of coal is divided into two or more phases according to temperature and is achieved through organic combination of the internal heating rotary kiln dry distillation device and the spiral pushing external heating dry distillation device, winnowing and dust removal, preheating and drying and dehydration are conducted on raw coal by means of a rotary kiln, high-efficiency medium and low temperature dry distillation and high-calorific-value raw gas and tar product precipitation are achieved by means of the spiral pushing external heating dry distillation device, the advantages of the internal heating dry distillation device and the external heating dry distillation are fully combined, dry distillation efficiency, heat utilization efficiency and the quality of dry distillation products are improved greatly, and marketing prospects are broad.

The invention discloses a method for separating and extracting rhenium from a rhenium-molybdenum mixed solution and co-producing a ferromolybdenum alloy. The method comprises the following steps of adding a molybdic acid radical precipitator into the rhenium-molybdenum mixed solution, precipitating molybdic acid radical under a weakly acidic condition, and carrying out solid-liquid separation to obtain molybdenum-rich slag and a rhenium-containing solution; adding a rhenic acid radical precipitator and a flocculant into the rhenium-containing solution, flocculating and precipitating rhenic acid radical, and carrying out solid-liquid separation to obtain rhenium-rich slag; and carrying out high-temperature drying and reduction roasting on the molybdenum-rich slag to obtain the ferromolybdenum alloy. According to the method, the selective separation effect on molybdenum and rhenium is good, the process is simple, the application range is wide, the cost is low, and the method is particularly suitable for rhenium-molybdenum separation and recycle in a solution with low molybdenum content and high rhenium content.

The invention relates to a paper pulp stirring device and particularly relates to a paper pulp stirring and filtering device with multiple stirring modes. The paper pulp stirring and filtering devicecan stir paper pulp in the stirring device along all directions to realize complete stirring, timely filter the paper pulp impurity precipitates after stirring and has multiple stirring modes. The paper pulp stirring and filtering device can stir paper pulp in the stirring device along all directions to realize complete stirring and timely filter the paper pulp impurity precipitates after stirring. The paper pulp is fully stirred, then is directly filtered through a filter net and then is collected so that the problem that the stirred paper pulp is transported to other places for filtering sothat paper pulp sedimentation is produced is solved.