69results about How to "Fully suspended" patented technology

The invention provides an ecological and environment-friendly new method for preparing magnetic nano Fe3O4 particles by biological catalysis, and application of the particles to treatment of uranium-containing wastewater. The method comprises the following concrete steps: (1) culturing and domesticating thiobacillus ferrooxidans; (2) preparing bio-polymeric ferric sulfate; (3) synthesizing the magnetic nano Fe3O4 particles; (4) performing a test of adsorbing uranium in the uranium-containing wastewater by the magnetic nano Fe3O4 particles. The obtained magnetic nano Fe3O4 particles are simple in preparation synthesis route, mild in reaction condition and easy to operate; a biological catalysis oxidant is used for replacing a conventional chemical oxidant (nitrite), so that cancerogenic substances are prevented from being discharged to the environment and the environment-friendly effect is really achieved. Meanwhile, the obtained magnetic nano Fe3O4 particles can reduce the content of uranium in the low-concentration uranium-containing wastewater with the concentration of 0.45-0.50mg / L by more than 90% and have very important practical meaning in aspects of uranium-containing wastewater treatment, uranium recovery and the like in uranium mining and metallurgy.

The invention discloses a method for recovering a silicon powder from monocrystalline and polycrystalline silicon cutting wastes by utilizing a potential adjustment centrifugal process. The method comprises the following steps of: firstly, performing pretreatment on the cutting wastes to remove a polyethylene glycol solution; drying to obtain a mixed powder of silicon and silicon carbide; adding water to the mixed powder and stirring; regulating a pH value to 6-9 by acid and base; performing centrifugal separation for a plurality of times, and then, adding the acid to an isolated upper layer suspension to regulate the pH value to 1-3 so as to enable a silicon powder aggregate to grow up; and performing standing settling for 30min or centrifugal settling for 5min to collect the silicon powder, wherein the purity of the silicon powder can reach more than 80 percent.

The invention provides an inorganic foamed concrete insulation board and a preparation method thereof. The insulation board comprises foamed concrete, and has density of 160-250kg / m<3>, compressive strength of 0.3-0.5 MPa, and coefficient of thermal conductivity of 0.05-0.062 W / m.K. The prepared insulation board has the characteristics of low unit weight and good heat insulation effect, and can be widely used as an insulation material in the field of construction.

The invention discloses suspension salt well completion fluid, which is a suspension prepared from the following raw materials in percentage by weight: 20 to 82 percent of sodium chloride, 0.5 to 3.0 percent of thickening agent A, 3.0 to 4.5 percent of thickening agent B, 0.10 to 3.0 percent of salt re-crystallization inhibitor, 0.5 to 2.0 percent of corrosion inhibitor, 1.0 to 3.0 percent of fluid loss additive, 0.1 to 1.5 percent of oil layer protecting agent and the balance of water. The suspension salt well completion fluid has the advantages of low damage to a stratum, wide specific gravity adjusting range, high viscosity and low cost.

The invention relates to a method for modifying magnetic bentonite by a biosurfactant. The method comprises the steps of firstly burying straws and rice husks in farmland soil for composting, performing enrichment culture on compost and domesticating a biosurfactant to generate a bacterial strain, continuously performing fermental cultivation, re-suspending fermentation liquor by using dichloromethane, filtering, extracting, centrifuging, and collecting sediment, thus obtaining a purified biosurfactant. The purified biosurfactant is used for replacing a conventional chemical surfactant, modifying the magnetic bentonite, and preparing to obtain a novel adsorber; the novel adsorber is applied to removal of uranium in low-concentration uranium-containing wastewater. The adsorber has good adsorptive property, needs main raw materials of agricultural waste biomass and natural minerals, is pollution-free to environment, and truly realizes resource conservation and environment friendliness. The method is simple, mild in reaction condition, and easy in magnetism control, and the uranium content in the low-concentration uranium-containing wastewater with the concentration of 0.45-0.55 mg / L can be reduced by 95 percent or more.

The invention provides a method for preparing a Ni-SiC composite coating on the inner surface of a hollow workpiece. By means of a cyclic electroplating solution code position technology, an electroplating solution only makes contact with the inner surface of the hollow workpiece, and only the composite coating is deposited on the inner surface of the hollow workpiece without affecting the status of the outer surface of the hollow workpiece. The SiC content of the composite coating prepared in the composite electroplating solution with the SiC concentration being 20 g / L reaches up to 18.8%vol, and the utilization rate of SiC is effectively increased. The deposition rate of the Ni-SiC composite coating reaches up to 83 microns per 30min. Compared with a pure nickel coating, the Ni-SiC composite coating is low in surface roughness, uniform and compact and has the characteristics of high hardness, high abrasion resistance and high corrosion resistance. Through the method, the problem of concentration polarization of a composite electroplating solution in an immersion type electroplating system is effectively solved.

The invention discloses a method for recovering a silicon powder from monocrystalline and polycrystalline silicon linear cutting wastes by utilizing a microporous membrane filter process. The method comprises the following steps of: (1) performing pretreatment on the cutting wastes; (2), adjusting surface potential in a suspension aqueous solution of a mixed powder; (3), performing a membrane separation process: putting a flat microporous membrane or a tubular microporous membrane of which the pore diameter is 3-5mum in filtration equipment; slowly pouring slurry with an adjusted specific pH value into the filtration equipment to obtain a silicon-rich phase suspension passing through the microporous membrane and silicon carbide-rich deposits; then, slowly adding the obtained silicon-rich phase suspension to flat microporous membrane or tubular microporous membrane equipment of which the pore diameter is 1-2mum for refiltering to obtain a secondary filtration silicon-rich phase suspension; and (4), adjusting the surface potential of a silicon-rich phase so as to rapidly recover the silicon powder.

The invention discloses a perfuming, anti-corrosion and anti-bacterium processing technology for an ox bone folding fan framework, and belongs to the field of folding fan bamboo material processing technologies. The perfuming, anti-corrosion and anti-bacterium processing technology for the ox bone folding fan framework is characterized by comprising the steps of preparation of anti-bacterium anti-corrosion solvent and anti-bacterium anti-corrosion perfume, material boiling, baking, spraying and slurry wrapping. In addition, due to the fact that a surfactant, detergent dispersant and sodium carboxy methyl cellulose are added to the anti-bacterium anti-corrosion solvent, all anti-corrosion anti-bacterium components can be mixed together to be consistent, and the anti-bacterium anti-corrosion effect can be maximized and optimized under the synergistic action; due to the fact that staged baking perfuming operation is conducted on the ox bone folding fan framework through pure natural plant perfume materials, the fragrance can slowly penetrate into ox bone fibers, the smoking flavor cannot be generated, and the perfuming fragrance is durable and fresh; after a high-oleic ox bone preservative solution is sprayed, the surface of the ox bone folding fan framework is repeatedly wiped through cotton cloth and chamois leather until a slurry wrapping layer in a glossy state exists, an anti-oxidation layer on the surface can be densified, and the weather resistance is effectively improved.

The invention discloses a mosquito-dispersing anticorrosion and antibacterial machining process of a folding fan framework made by cow bones, and belongs to the field of folding fan material treatment processes. The mosquito-dispersing anticorrosion and antibacterial machining process is characterized in that the method includes the steps of preparing an antibacterial and anticorrosion solvent and antibacterial and anticorrosion boiling materials, boiling materials, conducting spraying, conducting smoke curing and the like. Furthermore, a surfactant, a cleaning dispersing agent and sodium carboxymethyl cellulose are added to the antibacterial and anticorrosion solvent so that fusion consistency of all the antibacterial and anticorrosion components can be achieved, and the antibacterial and anticorrosion effects can be maximized and optimized under the synergistic effect. According to the mosquito-dispersing anticorrosion and antibacterial machining process, both the selected antibacterial and anticorrosion solvents and the antibacterial and anticorrosion boiling materials are made of pure natural materials which are economical and practical, the purchasing cost is low, the mosquito dispersing effect and the anticorrosion and antibacterial effects are good as well, and hazards to the environment and the human body are avoided. By means of the machining process, anticorrosion treatment can be conducted on the folding fan framework made by the cow bones of a folding fan effectively, and the folding fan framework made by the cow bones is durable and not prone to cracking or generating reverse osmosis of oil; the material performance index of the folding fan framework made by the cow bones is increased greatly, the antibacterial and health-care effects are achieved, and negative ions beneficial to the human body can be emitted.

The invention relates to a deinking device and a method for a waste paper magnetic-selected deinking machine, and relates to the field of waste paper deinking reuse. The deinking device comprises a frame, a transmission system, a feeding pump, a feeding pipe, a weir plate, a rotating drum, an unloading water pipe, a separation tank body, a printing ink discharging pipe, an accept discharging pipe, and a return pipe, wherein permanent magnets are arranged in the rotating drum; the separation tank body is disposed in a lower portion of the rotating drum; the printing ink discharging pipe, the accepts discharging pipe, and the return pipe are arranged on the separation tank body; valves for adjusting liquid level is disposed on the accept discharging pipe; and a stability of the liquid level in the separation tank body is maintained by the return pipe. By feeding the paper pulp from the bottom, the device improves the dispersion degree of the paper pulp and reduces the entrainment of the magnetic materials to the paper fibers, and the magnetic materials (printing inks) is easy to adsorb on the magnetic rotating drum, so that the deinking rate and the fiber receiving rate are improved, magnetic separation can be realized in a relatively high concentration of the paper pulp, and the processing capability is improved.

The invention provides a nutritive breakfast bag based on a soybean milk maker. The nutritive breakfast bag comprises, according to a mass ratio, 40-60% of soybeans, 7-13% of instant oats, 7-13% of corn grits, 7-13% of raw badam, 16-19% of dried dehydrated red dates and 1-4% of dried tremella. The soybeans are subjected to following treatment: (1) thermal treatment, in which soybeans are baked at 90-110 DEG C or dried in hot wind for 5-15 min; (2) soaking, in which a NaHCO3 solution with the mass percentage concentration being 1-2% is used for soaking the obtained soybeans for 30-90 s; and (3) drying, in which the obtained soybeans are baked at 75-95 DEG C or dried in hot wind for 20-40 min. The beany flavor and the flatulence factor content can be effectively reduced, residue filtration is not required, and the obtained product tastes strong, is free of throat sensitivity, and has the shelf life as long as 9-12 months. The product types on the market are increased based on soybean milk manufacture of a soybean milk maker, and the nutritive breakfast bag is nutritive and healthy. Soaking isn't required once people buy the nutritive breakfast bag, the materials in the bag can be put in a soybean milk maker for soybean milk manufacture, and the soaking before conventional soybean milk manufacture at home is saved. The nutritive breakfast bag has good economic development value.

The invention provides regenerated waterproof putty powder and an application method thereof, which belong to the technical field of building materials. The regenerated waterproof putty powder is prepared from the following components in parts by weight: 220 to 350 parts of Portland cement, 400 to 680 parts of waste aerated concrete micro powder, 50 to 150 parts of ash calcium powder, 50 to 150 parts of heavy calcium carbonate powder, 50 to 120 parts of talcum powder, 2 to 7 parts of hydroxypropyl methyl cellulose, 3 to 8 parts of dispersible latex powder, 3 to 7 parts of magnesium aluminum silicate and 2 to 8 parts of dry powder polycarboxylate superplasticizer. Waste aerated concrete micro powder is used as a main filler, heavy calcium carbonate powder and talcum powder are used as secondary fillers, white cement and ash calcium powder are used as main film-forming substances, hydroxypropyl methyl cellulose, dispersible latex powder, magnesium aluminum silicate and a dry powder polycarboxylate superplasticizer are used as functional aids, and the putty powder has the characteristics of good crack resistance, high bonding strength, favorable water resistance and favorable decorative effects.

The invention discloses a bacterium resistance and corrosion prevention boiling solution as well as a bacterium resistance and corrosion prevention technology for an ox bone folding fan framework and belongs to the field of treatment formulas and technologies for folding fan bamboo materials. The boiling solution is characterized by comprising a bacterium resistance and corrosion prevention solvent and a bacterium resistance and corrosion prevention boiling material. Besides, a surfactant, a purification dispersant and sodium carboxymethyl cellulose are added, all bacterium resistance and corrosion prevention components are mixed consistently, and bacterium resistance and corrosion prevention effects are maximized and optimized under the synergistic effect. The bacterium resistance and corrosion prevention solvent and the bacterium resistance and corrosion prevention boiling material are selected from pure natural materials, and the boiling solution is low in purchase cost, economical, practical and good in use effect, causes no harm to the environment and human bodies, achieves success through experimental stage and batch tests and is suitable for popularization in the industry.

The invention discloses a radioactive contamination control and removal material, which comprises the following components in parts by weight: 60-80 parts of composite film-forming emulsion, 15-30 parts of coated hollow glass micro-beads and 0.5-5 parts of an additive. According to the invention, the composite film-forming emulsion and the coated hollow glass micro-beads are adopted, and the outercoating film of the coated hollow glass micro-beads has radiation shielding performance, so that the material has radiation shielding capability so as to improve the radiation protection effect in adecontamination process.

The invention discloses a purification method for medium-low grade bentonite. The method includes crushing and grinding medium-low grade bentonite mineral powder, sieving with a 200-mesh sieve, mixingthe obtained bentonite powder with deionized water, fully dispersing mineral particles bonded together in the bentonite under the action of mechanical force to prepare a bentonite slurry material, and adding a chemical agent into the dispersed bentonite slurry liquid to remove part of impurities and fully suspending mineral particles in the bentonite; physically purifying the fully-suspended slurry liquid and repeatedly extracting the upper slurry liquid; and then dewatering the upper slurry liquid of the extracted bentonite by a centrifugal method, drying and grinding to obtain bentonite concentrate with higher purity. In the method, HCl and H2O2 are used to remove carbonate and organic matters in the bentonite slurry liquid, and constant-temperature oscillation is assisted to fully react, so that the slurry liquid can be fully suspended, the subsequent physical method has a better purification effect, and the purification efficiency is improved.

The invention relates to the loudspeaker box system technology field and especially relates to a vibration reduction loudspeaker box system. A loudspeaker box body in the vibration reduction loudspeaker box system adopts an electromagnet to suspend a loudspeaker. A foot stand adopts a hollow column which is filled with a cast iron powder. And a top panel is made of a vibration reduction plate. The column, the top panel and a bottom panel are connected and fixed through spot welding. By using the loudspeaker box system, vibration is small and sound quality is good.

The invention relates to the technical field of sound systems and in particular relates to a vibration-damping sound box. According to the vibration-damping sound box, an electromagnet is adopted to keep a loudspeaker suspended; besides, a vibration-damping sound insulation layer is arranged outside a sound box housing; such a sound box is low in resonance and capable of producing good-quality sound.

The invention relates to a dual-motor automatic variable-speed transmission device of a magnesium ore reaction kettle. The dual-motor automatic variable-speed transmission device comprises a stirringshaft, a transmission motor, a variable-speed transmission mechanism, a rotating speed detecting unit, a variable-speed driving mechanism and a variable-speed driving motor, wherein an output shaft ofthe transmission motor is in engaged transmission with the variable-speed transmission mechanism; the variable-speed transmission mechanism is in engaged transmission with the stirring shaft; an output shaft of the variable-speed driving motor is connected with the variable-speed driving mechanism; the variable-speed driving mechanism is in transmission connection with the variable-speed transmission mechanism through a poking rod; the rotating speed detecting unit is connected with the stirring shaft and the variable-speed driving motor; the transmission motor drives the stirring shaft to rotate through the variable-speed driving mechanism; the rotating speed detecting unit is used for detecting the rotating speed of the stirring shaft in real time, starting the variable-speed driving motor after comparing the rotating speed with a set rotating speed reference value, driving automatic switching of the variable-speed driving mechanism in a high / low speed and driving the stirring shaftto automatically switch the stirring and rotating speed at the high / low speed. According to the dual-motor automatic variable-speed transmission device disclosed by the invention, automatic speed variation can be realized, and the magnesium ore reaction kettle is enabled to be in a reasonable stirring and rotating speed range.

The invention relates to the technical field of sound systems, specifically to a vibration-reducing loudspeaker box system. A loudspeaker box main body in the vibration-reducing loudspeaker box system adopts electromagnets to suspend a loudspeaker, and a foot stool is a hollow stand column filled with cast iron powder, and vibration reducing legs are arranged at the bottom of the foot stool. The loudspeaker box system is relative small in vibration, and better in tone quality while producing sound.

The invention provides an experimental device for simulating air agitation of a marine module drilling machine flow dividing box. The experimental device comprises an instrument air tank, a wellhead mud return groove, a flow dividing box, a mud tank and a mud pump. An inlet of the flow dividing box is connected with the wellhead mud return groove, an outlet of the flow dividing box is connected with an inlet of the mud tank, an outlet of the mud tank is connected with an inlet of the mud pump, an outlet of the mud pump is connected with the wellhead mud return groove, and an air stirring pipeline is pre-buried in the flow dividing box and connected with the instrument air tank. According to the experimental device for simulating the air agitation of the marine module drilling machine flowdividing box, data statistics, design adjustment and effect verification can be carried out on air stirring conditions and the like, and a basis is provided for on-site use of a marine module drillingmachine.

The invention relates to the technical field of sound systems, in particular to a sound box system. A sound box body in the sound box system adopts an electromagnet to levitate a loudspeaker, and foot stands are hollow stand columns filled with cast iron powder. The vibration of the sound box system is smaller and the made sound quality is better.

The invention relates to a photothermal conversion multifunctional fabric and a preparation method thereof. The preparation method comprises the following steps: 1, adding zirconium carbide into a polymer solution, uniformly stirring, and then carrying out ultrasonic oscillation to prepare a polymer-ZrC suspension; 2, the yarn sequentially passes through a polymer-ZrC turbid liquid stock tank and a drying cylinder of a sizing machine, and preparing yarn / polymer / ZrC composite yarn; and 3, weaving the yarn / polymer / ZrC composite yarn to obtain the multifunctional fabric with the photothermal conversion function. The fabric has the following advantages: the fabric has excellent photothermal conversion function and anti-ultraviolet function, strong light absorption capability and high and adjustable photothermal conversion efficiency; the preparation process is simple, and the yarns are prepared by a traditional sizing process; the yarns are not damaged in the processing process, and the physical and chemical properties of the yarns are enhanced; and the fabric can be recycled for multiple times and is washable and good in cycling stability.