3950 results about "Dust pollution" patented technology

The invention discloses a heavy oil hydrogenation catalyst and a preparation method thereof. The heavy oil hydrogenation catalyst comprises a carrier and an active ingredient; the carrier is aluminum oxide, and is prepared from pseudo-boehmite with dry basis content below 50% via moulding; the active ingredient are metals selected form family VIII, Co or Ni, and/or family VI B, Mo or W. The preparation method comprises following steps: preparation of pseudo-boehmite, preparation of the carrier, and loading of the active ingredient. The heavy oil hydrogenation catalyst is capable of maintaining high demetalization, desulphurization, and carbon residue removing activities, simplifying drying process of pseudo-boehmite preparation, avoiding dust pollution caused by moulding process, increasing production efficiency, reducing production energy consumption, and reducing catalyst cost further.

The invention discloses a polyurethane multilayer composite sheet for an automotive headliner, which has a non-woven fabric layer, a first reinforcing glue film layer, a first reinforcing fiber layer, a first adhesive film layer, polyurethane foam board, a second adhesive film layer, a second reinforcing fiber layer, a reinforcing glue layer and a surface finish layer from bottom to top. The production method of the polyurethane multilayer composite sheet has the characteristics that: the use of the reinforcing glue films as a substitute of hot-melt adhesive powder simplifies production process, improves production efficiency and product quality, radically solves dust pollution in a production process, and improves the working environment of workers. The polyurethane multilayer composite sheets produced by the method can be used for fiber glass-free automotive roofs, biodegradable automotive roofs, light automotive roofs, and other high-quality automotive headliners; the introduction of reinforcing fiber mats in different forms enables the method to produce breathable automobile roofs, high acoustic absorption automotive roofs, high strength automotive roofs and other functional automotive headliners; and the sheet and the method fill a gap of the automotive headliner industry in China.

The invention belongs to the field of chemical pigments, and in particular relates to an iron oxide black granular pigment and a manufacturing method thereof. The iron oxide black granular pigment comprises a main component iron oxide black (Fe3O4) which is coated with an additive coating layer, and the main component iron oxide black is combined with the additive coating layer to form the granular pigment; and the pigment is prepared by the following steps: firstly preparing aqueous solution of an additive, and performing heating until 30 to 100 DEG C; and sending the iron oxide black into a granulator, evenly spraying the prepared aqueous solution of the additive onto powder, gradually forming small granules, and screening and drying the prepared granules with a vibrating screen to prepare a finished product. The granular pigment prepared by the method is not easy to diffuse so as to effectively prevent dust pollution, has high luster retention, good flowability and dispersity, and low cost, and is suitable to be widely applied in industry.

The invention discloses a production method for manganese sulfate by using low-grade manganese ores. According to the method, manganese sulfate with high purity can be produced by using waste low-grade manganese ores with manganese content of 10% to 20%, manganese tailing or manganese-containing solid waste residue. The method comprises the steps of preparation of raw materials, a slaking reaction, a leaching reaction, neutralization and purification of leachate, etc. According to the invention, production of manganese sulfate is not restricted by the grade of manganese ores, and low-grade manganese oxide ores with a grade greater than 10%, manganese tailing or manganese-containing solid waste residue can be fully utilized; produced manganese sulfate has high yield and high purity and is a very important industrial fundamental product; almost no external heat supply is needed, low energy consumption is achieved, production cost is low, it does not need to turn over and mix materials in the process of the reactions, the reactions are smooth, no toxic gas is generated, and no environmental pollution is produced; discharge of three wastes (waste gas, waste water and industrial residue) reaches national discharge standards for environmental protection, and there is no dust pollution in a workshop.

A fastening apparatus for a detachable car multimedia player includes a first fastening member and a second fastening member. The first fastening member is fastened to an anchor seat and has a strut which has a wing flap extended sideward from the top end. The second fastening member is located on the bottom of the car multimedia player and has a coupling bore. The first fastening member may be coupled with the second fastening member to rapidly mount the car multimedia player and remove the car multimedia player when not in use to prevent theft and dust pollution.

The invention relates to an organic-fiber reinforced organic-aerogel heat-insulating material and a preparation method thereof, wherein the basal body of the organic-fiber reinforced organic-aerogel heat-insulating material is organic phenol-aldehyde aerogel, a reinforced body is organic pre-oxidized fibers, and the density is 0.3 to 0.6g/cm<3>. A normal-pressure semi-closed drying method is adopted for preparation. Compared with a traditional organic-foam heat-insulating material, the material disclosed by the invention has the advantages of high strength, low heat conductivity, flame retardance and the like; and compared with an inorganic-fiber reinforced inorganic oxide-aerogel composite material, the material disclosed by the invention does not have the side effects of dust pollution,harm and irritability to the skin of a human body, stimulation to a respiratory tract and the like, so that the material is environment-friendly and safe. The material disclosed by the invention is applicable to occasions with the characteristic of having a high-strength requirement on the heat-insulating material at the temperature of minus 100 to 110 DEG C and is an ideal heat-insulating material for building house-decoration industries.

The invention discloses a heavy metal-contaminated soil solidifying agent and an application method thereof. The solidifying agent comprises the following components by mass: on the basis of the dry weight of heavy metal-contaminated soil, 10 to 15% of a binding material, 5% of biochar, 10% of vegetable fiber and 1% of a stabilizing agent. The components are added according a sequence of the stabilizing agent-the biochar-the vegetable fiber-the binding material. Addition of the chemical stabilizing agent and the biochar in the process of stabilization enables heavy metals to be absorbed and passivated and to lose mobility; preparation of heavy metal-contaminated soil slurry provides conditions for a later chemical reaction; the whole processing process is free of dust pollution and discharging of unwanted sewage. Addition of the vegetable fiber enables cracking of heavy metal-contaminated soil solidified by using a conventional solidifying agent to be effectively prevented and endurance of a solidified body to be improved. The method provided by the invention has the advantages of strong operability, low cost, extensive applicability, a high resource utilization rate, low environmental risk and easy large-scale popularization.

The invention discloses a dust inhibitor, which comprises the following raw material in percentage by weight: 0.6 to 0.8 percent of plant seed colloid, 0.1 to 0.3 percent of modified cellulose, 0.05 to 0.09 percent of dispersant and the balance of water. The dust inhibitor can be prepared at normal temperature in a common mixing equipment from mixed aqueous solution of plant seed colloid, modified cellulose, crosslinking agent, dispersant and reinforcing agent; and after being prepared, the dust inhibitor can be sprayed onto the surface of coal in carriages to allow the coal to form a layer of cured film on the surface, the viscosity of the film is high, the wind corrosion rate of the film is low, so that the dust pollution along railways in railway transportation of the coal and the dust loss of the coal are avoided. Besides, dust inhibition in railway coal transportation, the dust inhibitor can be used for dust inhibition on roads in mining areas, urban roads, constructions sites, stations, ports and the like so that the dust inhibitor can be used almost without being limited by fields, and the dust inhibitor can be widely used.

The invention provides an ecological environment-friendly dust inhibitor which comprises the following components by weight percent: 0.5-0.8% of modified starch, 0.05-0.10% of microbial polysaccharide, 0.1-0.3% of cellulose derivative, 0.05-0.10% of netty accelerant, 0.05-0.15% of flow dispersant, 0.01-0.10% of film forming agent and 98.0-99.0% of water. The dust inhibitor can enable coal or mineral powder to form a layer of curing film on the surface, is high in viscosity and low in wind erosion rate, can avoid the flowing dust pollution and the flowing dust loss of the coal or the mineral powder to the way side in the railway transportation process, and has a huge economic benefit and a social benefit of environmental protection for railway transportation and coal or mineral powder customers; and the components and a solution of the dust inhibitor do not have any toxic side effect and corrosive effect, the dust inhibitor does not cause any secondary pollution as the dust inhibitor can be quickly and biochemically degraded in the nature after the dust inhibition action period, and the soil can be properly improved.

The invention discloses a double-annular-atomizing environment-friendly dust-removing pneumatic spraying machine, which belongs to the technical field of the spraying machines. The pneumatic spraying machine is technically characterized by comprising a base, wherein a spraying mechanism is arranged on the base, and a turntable is arranged on the base and connected with a horizontal rotation driving device; a bracket is arranged on the turntable; the spraying mechanism is connected with the bracket and comprises an axial flow fan, a spraying drum and a double-annular atomizer; the axial flow fan, the spraying drum and the double-annular atomizer are connected with one another in sequence; the double-annular atomizer is connected with a high-pressure water pump by a pipeline; the high-pressure water pump is connected with an external water supply source by a pipeline and connected with an electric control box by a circuit; and the horizontal rotation driving device and the axial flow fan are respectively connected with the electric control box by circuits. The invention aims at providing the double-annular-atomizing environment-friendly dust-removing pneumatic spraying machine with compact structure, long range and better covering effect; and the double-annular-atomizing environment-friendly dust-removing pneumatic spraying machine is used for removing and suppressing dusts of dust pollution caused by mining in large-sized open pit coal mines as well as disorder dust discharge pollution in coal yards and during transportation, crushing and the like.

The invention discloses a composition containing a water-insoluble high-activity drug and a preparation method thereof. The water-insoluble high-activity drug is dissolved in an organic solvent containing a solid dispersion carrier, evenly sprayed on the surface of filler or blank pellets by adopting a fluidized bed and dried. The invention realizes the one-step completion of preparing the solid dispersion of the water-insoluble high-activity drug, pelleting and drying, has simple and convenient process, and no dust pollution, and effectively avoids the adverse influence of the high-activity drug on the health of production staff. The granules prepared by the method has even granularity, and good liquidity and compression formability, and can be further prepared into oral solid preparation. The composition prepared by the method has good drug dissolvability, and high oral absorption and bioavailability.

The invention relates to an artistic transfer print film for making a concrete veneer through set-retarding and eroding. The art transfer print film comprises a base film and a set-retarder coating, wherein the set-retarder coating is attached to the surface of the base film, the surface area of the set-retarder coating is smaller than that of the base film, and set-retarders coat a pattern region of the base film in a film structure. The artistic transfer print film for making the concrete veneer through set-retarding and eroding is laid at the bottom of a mold, concrete is poured, after concrete members are demolded, washing is performed with water for erosion so as to obtain designed patterns, and a decoration surface of comparison and convex-concave changes of aggregate exposing pattern veneers and plain concrete base surfaces is formed on the concrete surface. The technology is simple, clear and convenient, the connecting surface of a plain concrete base surface and an aggregate exposing pattern is clear and delicate, the construction period is short, the production cost is low, and the transfer print efficiency is high; the transfer print film is economic and environmentally friendly, good in durability and suitable for high-pressure cleaning; and abundant and exquisite design patterns are achieved, and decoration effects are clear and artistic. Compared with a conventional technology, the transfer print film does not have any harm to other positions of the concrete, and besides, dust pollution can be eliminated.

The invention discloses a method for cleaning green tealeaves. The method comprises: 1, an impregnation step of adding 18 to 22 grams of organophosphate-degrading enzyme into every 500 to 600 liters of water, pouring 40 to 50 kilograms of tealeaves, impregnating the tealeaves for 0.5 to 1.5 hours, washing the tealeaves, and collecting the tealeaves in a bucket; 2, a spin-drying step of placing the tealeaves into spin-drying equipment for spin-drying; 3, an air-drying step of air-drying the spin-dried tealeaves by using high-speed air-drying equipment; 4, an airing step of spreading the air-dried tealeaves in a thin layer on a shelf for airing; and 5, a step of subsequently processing the aired tealeaves by using a fixation process. The problems of pesticide residues on the surfaces of the tealeaves, dust pollution, heavy metal pollution, harm of remaining ozone to a human body during ozone washing and incapability of decomposing most of pesticides by pure fresh water washing are solved by impregnation, washing and dehydration.

The invention relates to a coal dust suppression agent and a preparation method thereof. The coal dust suppression agent comprises 0.5-1.5wt% of sodium carboxymethyl cellulose, 0.5-1.5wt% of sodium carboxy nethyl, 0.1-0.3wt% of glycerol and 96.7-98.9wt% of water. The coal dust suppression agent can be mixed at normal temperature without needing any other warming-up devices; after being mixed at the normal temperature, the coal dust suppression agent is sprayed or coated on the coal of carriage, so that a solidifying layer is formed on the coal, and dust pollution along the line and dust loss of the coal when in the railway transport can be avoided. Furthermore, the coal dust suppression agent does not cause environmental pollution, and has great economic benefit for railway transport and coal customer as well as social benefit for environmental protection. The method of the invention is simple in operation, low in cost and good in dust suppression effect.

The invention relates to a manufacturing domain of nanopowder composite, especially to a nano antibacterial powder coating and one-step manufacturing method of microsuspension. The nano antibacterial powder coating consists of water, mixture monomer, pigment, surface processing agent, nanometre-sized inorganic antiseptic particle and auxiliary agent. The method comprises dispersing components such as water and suspending disperser by ultra-audio wave, then performing dispersion by high-shear emulsifier to prepare the predispersion; afterwards, adding the other components into polymerization kettle according to priority, after agitation and heating, adding the said predispersion at one time, reacting at a constant temperature, then cooling, discharge, centrifugally dewatering and drying to obtain the product. The invention solves the problems that the nanoparticles are easy to aggregate inside the organic polymer existed in present technology and the manufacturing engineering of the traditional powder coating is difficult, and has advantages that the process flow is short, the equipment investment is low, and can save working hours and energy resource, is of no dust pollution, the prepared powder coating particles is of regular shape, and has better levelling property in application.

The invention discloses a drilling device for hardware machining. The drilling device comprises a device body, a vertical plate is arranged on one side of the top of the device body and sleeved with a support plate in a connected manner, a drilling machine is arranged at the top of the support plate, a movable block connected to the vertical plate in a sleeving manner is arranged on the front face of the support plate, and a working table is arranged at the position, corresponding to the drilling machine, of the top of the device body; a hardware original piece is arranged at the top of the working table; and a draught fan and a dust removal purification plant are arranged in an inner cavity of the device body. By means of the drilling device, hardware chippings generated when hardware is machined can be collected and then treated, and the problem that when machining is carried out for a long time, dust pollution occurs in a working space due to the fact that the chippings are too many is solved; and meanwhile, as the purification effect of the dust removal purification plant can be used for effectively purifying the chippings of the hardware, the quality of air in the working space can be improved, the health of an operator is facilitated, and influences of too-low quality of the air in the working space on the hardware machining efficiency are avoided.

The invention discloses a dust-proof ore fine crushing device, which comprises a shell and a cyclone dust collector; the top of the shell is provided with a top plate, and a symmetrical dust suction pipe is arranged on the top plate, and a dust collection cover is connected above the dust suction pipe. The dust collection hood is connected with a dust pipeline, and the dust pipeline is connected with a cyclone dust collector; a fixed crushing roller is arranged inside the housing, and a mobile crushing roller device is arranged above the fixed crushing roller. The invention is equipped with an axial flow fan and a cyclone dust collector to efficiently collect and recycle the dust generated in the crushing process, and is also equipped with a hinged plate to prevent the dust from leaking and polluting the environment; the invention is equipped with a mobile crushing roller device, through Adjust the distance between the crushing rollers to adapt to ores of different particle sizes, and has good adaptability; the present invention is equipped with crushing rollers, crushing blades, crushing hammers and grinding cones to perform multi-stage crushing of ores, improve crushing efficiency, and ensure crushing Effect.

The invention relates to the production field of tire rubber sizing materials, in particular to a method for mixing liquid state white carbon black and liquid state natural rubber in a liquid phase. The preparation method for liquid phase stirring and mixing of the white carbon black and the natural rubber comprises the steps of (1) preparing slurry; (2) mixing; (3) solidifying, dehydrating, washing and stoving. The method adopts liquid-liquid high speed stirring and mixing to effectively preserve original states of natural rubber macromoleculars, effectively preserves brute force of the natural rubber and substantially promotes brute force and abrasive resistance of mixed glue. Brute force of sizing materials mixed by using the method is substantially promoted, and themogenesis and hysteresis loss are obviously reduced. The mixed glue produced by the method can be singly used and can also be blended with the natural rubber, rubber polymer, natural rubber carbon black rubber master batch and rubber polymer carbon black rubber master batch according to certain proportion. According to the method, the liquid state white carbon black and the liquid state natural rubber are mixed directly, the process is simple, the land occupation is small, the equipment investment is low, and dust pollution does not exist in a production process.

The invention relates to a novel crushing device for a building. The novel crushing device comprises a support frame and a shell, wherein a feeding hole is formed in the top of the left side of the shell; a motor is arranged at the top end of the shell; the output shaft end of the motor is connected with a rotating shaft on which stirring rods are distributed; tapered bulges are distributed at the upper part of the inner side wall of the shell; a left crushing roller, a right crushing roller and a mesh screen are sequentially arranged below the rotating shaft; the right end of the mesh screen is hinged with the inner side wall of the shell; a partition plate is arranged below the mesh screen; the left end of the mesh screen is connected with the partition plate through a spring; the mesh screen is provided with a vibrating motor; partition plate through holes are distributed in the partition plate, and the upper surface of the mesh screen is covered by a filter screen; a first discharging hole is formed in the left side of the shell located above the mesh screen, and a second discharging hole is formed in the right side of the shell located above the partition plate; a water outlet in the bottom of the left side of the shell; a water inlet and a spray head are arranged at the top end of the shell; and a water purifying tank is arranged at the right side of the shell and is connected to the spray head through a water inlet hose. Due to the adoption of the structure, the crushing operation can be more effectively performed, and dust pollution can also be avoided or relieved.

The invention discloses a rust removal device for the outer surface of a pipeline, which comprises a workbench and a base, a number of shock absorbing devices are arranged between the workbench and the base, a pillar is arranged on the upper side of the workbench, and a mounting plate is arranged on the upper end of the pillar. The upper side of the plate is left and right symmetrically provided with a first motor, the output end of the first motor is provided with a first threaded rod, the first threaded rod is threadedly connected with a support plate, and the lower side of the support plate is provided with a mounting seat symmetrically left and right, A second threaded rod is arranged between the two installation seats, a second motor for driving the second threaded rod is installed on the right end of the lower side of the support plate, a slider is threaded on the second threaded rod, and the upper left part of the workbench is set There is a fixed table, the right side of the fixed table is provided with a fixed block, the upper right part of the workbench is provided with a slide rail, the slide rail is provided with a sliding table, and the left side of the slide table is provided with a fixed block. The invention has the advantages of simple structure, convenient use, reduced use cost, good shock absorption effect and reduced dust pollution.

The invention belongs to the technical field of polishing and particularly relates to automatic stainless pan polishing equipment. The automatic stainless pan polishing equipment is characterized in that the equipment comprises an electrical control device, a workbench, fixing clamps, supports and polishing devices, the fixing clamps are mounted on the workbench through a rotating device, the workbench is connected with a workbench motor and driven by the same to rotate, the polishing devices are mounted on the supports through a moving device, and the electrical control device is connected with and controls the polishing devices, the rotating device, the workbench motor and the moving device. The automatic stainless pan polishing equipment is reasonable in structural design and high in working efficiency, polished products are shining, dust pollution and damages to human bodies cannot be caused in the process of operating, labor intensity of workers is reduced, production cost is lowered, and a brand-new automatic polisher equipment capable of replacing manpower is provided.