609results about How to "Reduce the amount of dust" patented technology

The present invention relates to a coating composite for making coated granular fertilizer and its production method, and the fertilizer made up by using said coating composite. The coating composite is formed from coating agent, solidfying agent, nitrogen synergist, inorganic acid or organic acid, surfactant and adjuvant. As compared with non-coated fertilizer the nitrogen utilization rate of fertilizer produced by adopting said invention can be raised by 6%-10%, the fertilizer can be saved by 15-45%, and its fertilizer efficiency time can be obviously prolonged, and can be reached to 60-120 days.

The invention relates to a novel air purification and automatic sweeping integrated machine. The integrated machine comprises an air purifier. The air purifier comprises a shell and an electric control device. The integrated machine further comprises an automatic walking sweeping robot used in combination with the air purifier. A containing chamber for containing the automatic walking sweeping robot is formed in the bottom of the shell. A storage battery is arranged on the sweeping robot. A charging socket allowing the sweeping robot to be charged is arranged on the shell. The sweeping robot and the charging socket are connected through a separable electric connector. The electric control device comprises a controlled module arranged on the sweeping robot and a master control module arranged on the air purifier. The master control module and the controlled module are in wireless communication. The novel air purification and automatic sweeping integrated machine has the advantages of being convenient to use and capable of saving energy.

The invention relates to an efficient burning furnace with a rotary fluidization grate. The burning furnace with the rotary fluidization grate consists of a feeding system, a burning system and a slagging system; moreover, a waste heat boiler and a flue gas treatment system are connected with the burning furnace to form a complete garbage burning and generating system. The feeding system consists of a feeding hopper, a pre-drying conveying device, an aggregate bin, a chute and a charge distributor. The feeding hopper is a receiving opening for feeding garbage into the burning furnace and is arranged in a garbage storage pit close to one side of the burning furnace. An outlet of the feeding hopper is connected with an inlet of the pre-drying conveying device. A material level switch is arranged in the feeding hopper, and gives an alarm to prompt an operator to feed materials when the material level is lower than a set value so as to ensure that the hopper is not empty. The outlet of the hopper can be selectively provided with a feeding device. The burning furnace has the advantages of high burning speed, high burning efficiency, high slag burning degree, easy control, lower energy consumption, low pollution, low cost and investment conservation, and is applicable to domestic garbage with low thermal value and high moisture; and the garbage does not need to be pretreated.

The invention discloses a bar type handheld two-in-one separate dust collector with an independent dust and air separation and dust storage device. A main unit of the bar type handheld two-in-one separate dust collector is a handheld dust collector, a push rod is a hollow rod, and the independent dust and air separation and dust storage device is arranged on the push rod below the handheld dust collector above a floor brush of the bar type handheld separate dual-purpose dust collector and can be individually taken down, so that dust can be poured. The bar type handheld two-in-one separate dust collector has the advantages that the main unit, the push rod and the floor brush of the bar type handheld two-in-one separate dust collector can be separated from one another and can be assembled with one another, and accordingly the bar type handheld two-in-one separate dust collector can be in different service modes and can work as a mopping dust collector, the handheld dust collector and a handheld dust collector with long connecting pipes.

The invention discloses a method for drying low-rank coal, which comprises the following steps: (1) the low-rank coal is crushed, and the arrange of a grain diameter of the crushed low-rank coal is between 3 and 50mm; (2) the crushed low-rank coal is sent into a dryer and contacts hot flue gas which comes from a hot flue gas generation device; (3) the low-rank coal which comes out of the dryer is collected, and the hot flue gas discharged by the dryer as well as coal powder and water vapor which are carried by the hot flue gas are aerated into a coal powder treatment and acquisition system at the same time; (4) at least partial coal powder collected by the coal powder treatment and acquisition system is sent to the hot flue gas generation device to serve as a combustion material; (5) the hot flue gas which comes out of the coal powder treatment and acquisition system is divided into two parts, wherein the first part of flue gas circularly returns to the hot flue gas generation device, and the second part of the flue gas is discharged after heating combustion air through an air pre-heater; and (6) the heated combustion air is conveyed to the hot flue gas generation device to take part in the combustion. The invention also provides a low-rank coal drying system with self-supplied fuel, which has the advantages of high energy utilization rate and low production cost.

The invention is a stainless steel ash removing method for smelting inconel. The method comprises the steps as follow; 1 make ash removing block, comprising the following three steps; 1) selective mixing; 2) extrusion molding; 3) natural drying; 2 make the master liquid by melting the normal recycled waste steel or stainless slag steel, pre-treated the molten iron, the ash removing block and the chromate nickel sponge iron inside the electric furnace; 3 batch-by- batch restoring, which comprises the following three steps: 1) add the block and the extra coke or coke breeze to smelt after the raw material used as master liquid is fully melted; 2) supply power with 15 to 20 minutes, then stop for conducting the operations of temperature measuring, exampling and analyzing, and add ferrosilicon breeze and lime; 3) the molten iron is remained between 1550 to 1600 DEG C in the smelting process; 4 finally restoring, and the main components of the metal solution after being finally restored are as follow: C percent is more than or equal to 2.50, Si percent is more than or equal to 0.20, P percent is less than or equal to 0.045, Cr percent is more than or equal to 5.0, and Ni percent is more than or equal to 1.5. The invention has the advantages of reducing environment pollution and increasing the metal yield of the ash removing.

The invention discloses a low-resilience liquid accelerator for shotcrete and a preparation method thereof. The accelerator is prepared from the following raw materials in percent by mass: 20%-40% of sodium hydroxide, 25%-40% of aluminium hydroxide, 3%-10% of a synergist, 0.5%-2% of a setting accelerator, 0.003%-0.02% of a viscosity adjusting agent, and the balance water, wherein, the synergist is sodium silicate, the setting accelerator is an alcohol amine substance, and the viscosity adjusting agent is potassium chromate or sodium nitrite. The preparation method comprises the following technical steps: adding sodium hydroxide and the synergist into a reaction kettle, adding water, and starting an agitator and a heater; keeping the temperature after the temperature reaches a set temperature, adding aluminium hydroxide, and reacting with the constant temperature; adding the viscosity adjusting agent, stirring, heating, reacting with a constant temperature, then stopping heating, and naturally cooling; and adding the setting accelerator after the reaction system is cooled, and cooling to room temperature, so as to obtain the accelerator. The accelerator is short in setting time, low in resilience and moderate in viscosity, generates a little sediment, has good cement adaptability, and the preparation method for the accelerator is simple, practicable and energy-saving.

The invention discloses a preparation method of a low-alkali polymer high-efficient liquid setting-accelerator for sprayed concrete. The preparation method comprises the following steps: (1) preparing an aluminate mother solution; (2) preparing a modifying agent; (3) preparing a low-alkali polymer high-efficient liquid setting-accelerator. The disclosed low-alkali polymer high-efficient liquid setting-accelerator has a uniform and stable property and strong adaptability; the mixing amount is 2 to 4% of the cement mass, the initial setting time is within 2 minutes, the final setting time is within 5 minutes, the strength loss in the later stage of concrete is within 10%; furthermore, the liquid setting-accelerator can efficiently reduce the dust amount and resilience value during the sprayed concrete construction and improves the strength of sprayed concrete.

The invention discloses a method and a device for power generation by utilizing steam generated from waste heat of a steel mill in a cascade mode. The device comprises a chimney, a main shaft fan, a sintering machine, a cooling machine, a large flue of the sintering machine, a machine tail flue gas superheater of the sintering machine, a machine tail flue gas preheater of the sintering machine, a deaerator, a feed pump, a waste heat boiler of the cooling machine, a steam turbine, a generator, a condenser, a condensate pump, a circulating fan and the like. Through three process steps of preheating condensed water of the steam turbine by utilizing the preheater in machine tail flue gas of the sintering machine, generating intermediate-temperature steam by heating the waste heat boiler of the cooling machine, heating the intermediate-temperature steam further through the machine tail flue gas superheater of the sintering machine to generate high-temperature steam and the like, the power generation is performed by utilizing the steam generated from the flue gas waste heat of a sintering machine plant fully. The power generation is performed by utilizing the steam generated from the heat of the machine tail flue gas of the sintering machine and the flue gas of the cooling machine of the steel mill, so the quality of the generated steam is improved greatly and meets the requirement of waste heat generation, and a process flow is simple.

The invention discloses a production system for a door leaf of a plain batten door, and belongs to the field of wood working machinery. The production system for the door leaf of the plain batten door comprises a door leaf blank one-piece flow processing system, wherein the door leaf blank one-piece flow processing system comprises a transfer machine, cutting equipment, edge sealing equipment, hardware processing equipment, frame processing equipment, film covering equipment and a marker printer which are connected in sequence through a conveying platform; a bar code is attached onto a to-be-processed door leaf blank; scanning equipment are arranged on all of the transfer machine, the cutting equipment, the edge sealing equipment, the hardware processing equipment, the frame processing equipment and the film covering equipment. The production system disclosed by the invention has the benefits that a traditional intermittent production mode is changed; through fully-automatic operation, the labor cost is reduced, and the error rate is low; the production system also has the advantages of being strong in processing product compatibility and high in product quality.

The invention discloses a dry process scale continuous production process of quartz sand, which comprises the process steps of quartz ore breaking and crushing, product grading, packaging and transportation, dust pollution treatment and the like. In the process step of the quartz ore breaking, a two-grade screening type breaker is adopted, and a cleaning dewatering screen and a broken stone drying tower are arranged between two grades of screening and breaking; in the process step of quartz ore crushing, a single-stage HK type sand making machine is adopted, and single-group production or multi-group parallel production can be performed from the HK type sand making machine to the finished product delivery after screening and grading. In the process step of product grading, the mode combining air classification and sieve classification is adopted, namely the process step of single-stage air classification, single-stage drum screen classification and two-stage rotation movable screeningmachine classification is adopted, wherein the air classification adopts negative pressure classification to realize comprehensive functions of separation and dust removal. In the process step of packaging and transportation, a production process in which a plurality of machine sets are connected in parallel is adopted, and the same product is collected and conveyed to a finished product storage bin by the same conveyor to realize the integration of packaging and shipping.

The invention discloses a plasma gasification and melting system for solid waste centralized processing, and relates to the technical field of solid waste thermochemical treatment. The system comprises a plasma gasification and melting furnace, a synthesis gas outlet of the plasma gasification and melting furnace is connected with a secondary combustion chamber, a high-temperature smoke outlet ofthe secondary combustion chamber is sequentially connected with a waste heat recycling system and a smoke purifying system, and the synthesis gas outlet of the plasma gasification and melting furnaceis further connected with a reforming chamber, a high-temperature synthesis gas outlet of the reforming chamber is sequentially connected with a heat exchange system and a synthesis gas purifying system. The controlled oxygen combustion technology is adopted in the plasma gasification and melting furnace, the excessive air coefficient of primary air is about 0.3 to 0.5, the dust amount in rough synthesis gas can be effectively reduced, re-generation of toxic and harmful substances of dioxin and furan can be restrained, and the production of flying ash amount can be reduced.

The invention relates to a quick-setting high-strength alkali-free liquid accelerator. Raw materials comprise aluminum sulfate, hydrofluoric acid, aluminum hydroxide, a pre-dispersion reinforcing component, a suspension component, a complexing component, organic acid and water. The accelerator has great adaptability on cement-based materials and dual technical effects of quick setting and high strength are achieved, and the sprayed concrete applying the cement-based material is high in setting speed, high in early strength, low in rebound rate, small in dust amount, good in bonding effect, environmentally friendly and free of corrosion.

The invention provides a silicon nitride crucible coating and a preparation method thereof. The preparation method comprises the following steps: adding adhesive, dispersant and silicon nitride into the deionized water, and uniformly mixing to obtain the sizing agent, wherein weight ratio of silicon nitride to adhesive to dispersant is 100 : (15-28) : (5-12), weight ratio of silicon nitride to deionized water is 1 : (3-4), and the adhesive is one of organosilan, metasilicic acid, polyatomic alcohol, polyvinyl alcohol and acrylate; and spraying or dipcoating the sizing agent to the inner surface of the crucible, and performing calcination and annealing at the temperature of 260 DEG C to 550 DEG C in an inert gas atmosphere, wherein oxygen content of the silicon nitride crucible coating is 1 wt% to 5 wt%. According to the invention, a certain amount of adhesive is added into the sizing agent, and subsequent calcination is controlled to be carried out in the argon gas atmosphere, so that a great amount of dust generated in the spraying process is avoided, and adhesion strength of the coating is enhanced, and as the oxygen content of the coating is controlled to be lower, the requirement of high-quality polycrystalline silicon chip production for the oxygen content of the coating can be met.

The invention provides a high silica fiber woven tectorial membrane filter material for a coal-fired boiler. The high silica fiber woven tectorial membrane filter material for the coal-fired boiler comprises four layer of structures, namely an impregnation treatment protective layer, a high silica fiber expanded fabric layer, an impregnation treatment protective layer and a polytetrafluoroethylene microporous membrane layer sequentially, wherein the high silica fiber expanded fabric adopts double-layer woven fabric woven by adopting a double-layer rearranged twill technology; the whole high silica fiber expanded fabric layer is impregnated in an impregnation liquid, and the impregnation treatment protective layer is formed on the surface of the high silica fiber expanded fabric layer; the high silica fiber expanded fabric layer and the impregnation treatment protective layer form a high silica fiber treatment fabric layer; and the polytetrafluoroethylene microporous membrane layer thermally covers the high silica fiber treatment fabric layer. The high silica fiber woven tectorial membrane filter material for the coal-fired boiler has the characteristics of high filtering accuracy, temperature resistance, corrosion resistance, high strength, low flexibility, low resistance, high efficiency and long service life, PM2.5 dust can be efficiently trapped, and the near zero emission of dust less than 5mg/Nm<3> is realized.

The invention discloses an on-line waste gas treatment system of a waste cable high-temperature treatment device. The on-line waste gas treatment system comprises a first dust collection mechanism, an energy transduction mechanism, a first regeneration mechanism, a settling mechanism, a dust collection module, an absorption mechanism, a discharging mechanism, a circulation mechanism, an unloading module and an adsorption filtering mechanism, wherein the energy transduction mechanism is communicated with the first end of the first dust collection mechanism; the first regeneration mechanism is communicated with the second end of the first dust collection mechanism; the settling mechanism is communicated with the energy transduction mechanism; the dust collection module is arranged below the settling mechanism; the absorption mechanism is arranged behind the settling mechanism; the discharging mechanism is arranged above the absorption mechanism; the circulation mechanism is communicated with the absorption mechanism; the unloading module is arranged below the absorption mechanism; the adsorption filtering mechanism is arranged between the absorption mechanism and the discharging mechanism. Aiming at the phenomena that by using a conventional dust collection system, wastes cannot be efficiently utilized and waste gases is discharged into the natural environment, the modules cooperate with one another, not only are waste gases efficiently recycled, but also substances in the waste gases are recycled, and environment pollution is avoided.

The invention belongs to the technical field of tamping apparatuses, in particular to a tamping apparatus for road engineering. Aiming to solve problems that local cavities in the road surface, uneventamping, a lot of dust during work and inconvenient movement are likely to occur, the invention proposes the following scheme: the tamping apparatus comprises a bottom plate and a mounting rack; theouter walls on both sides of the top end of the bottom plate are fixed by bolts with vertically arranged positioning posts; the outer wall of one side of the top end of the bottom plate is fixed witha vibration motor by bolts; the side walls of the two positioning posts are sleeved with connecting sleeves; and the two connecting sleeves are respectively fixed by bolts at intermediate positions onthe outer walls of the two sides of the mounting rack; and shock absorbing rods are hinged at positions, close to four corner portions, of the outer wall of the two sides of the mounting rack. The tamping apparatus of the invention can realize graded tamping, improve the tamping effect, make the tamping more uniform, avoid the local cavity phenomenon, collect dust, reduce the amount of dust in the working process and improve the working environment.

The invention discloses a powdery active carbon regeneration system and a powdery active carbon preparation method, and belongs to the field of waste treatment. The powdery active carbon regenerationsystem comprises a roller granulating device, a regeneration heating furnace and a gas burning device which are sequentially connected. The system and the method have the advantages of realization ofthe regeneration treatment and cycle use of powdery active carbon, reduction of the pollution to the environment, reduction of the use cost of active carbon, simple process flow, and no secondary pollution in the production process.

The invention discloses a controllable sand flow infinitely variable speed fan blade abrasion testing device which consists of an air compressor, a gas delivery pipe, a pressure sensor, a spray gun, a sand storage chamber, a sand flow control valve, a sand pipe, a particle flow sensor, an air inlet pipeline, an erosive wear test chamber, an erosive wear test chamber upper cover, an air outlet pipeline, a deduster, a motor, a frequency converter, a fan propeller, a control cabinet, a motor bracket, an air inlet pipeline bracket, a control cabinet bracket and an angle iron bracket. A series of technical problems that the erosive wear working conditions of a rotary fan blade cannot be really simulated by a conventional erosive wear testing device are overcome.