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382results about How to "Reduce the amount of adhesion" patented technology

Slag adhesion preventing fluorine-free slag modifier for ladle refining, preparation method and using method

The invention belongs to the field of steelmaking, and particularly discloses a fluorine-free slag modifier for preventing a ladle refining device from adhering slag, a preparation method and a using method. The slag modifier consists of active lime, bauxite and boric anhydride; and the slag modifier comprises the following chemical components in percentage by mass: 75 to 85 percent of CaO, 10 to 20 percent of Al2O3, 5 to 15 percent of B2O3, 0 to 8 percent of MgO, and the balance of impurities, wherein SiO2 is less than 7.0 percent, H2O is less than 0.05 percent, and the total amount of sulfur and phosphor is less than 0.01 percent. During use, in order to prevent a ladle from adhering the slag, the slag modifier is fed into the ladle in the later period of discharging steel from a steelmaking furnace, and in order to prevent an RH dip pipe or a CAS-OB dip cover and the like from dipping into the ladle device to adhere slag, the slag modifier is fed at a refining station. The slag modifier can effectively control the refining device from slag adhesion and improve the service life of a fireproof material, is favorable for reducing the contents of the sulfur, oxygen and impurities in the steel, and is simple to prepare and convenient to store, transport and use.
Owner:JIANGSU UNIV

Releasing agent special for bare concrete and preparation method thereof

The invention relates to a releasing agent special for bare concrete and a preparation method thereof. The releasing agent special for the bare concrete is a water dispersion solution and comprises raw materials including organic modified silicone oil accounting for 62%-75% of the total mass of the raw materials, polyacrylamide accounting for 0.01%-0.05% of the total mass of the raw materials, fatty acid amide accounting for 3%-5% of the total mass of the raw materials, organic amine accounting for 0.01%-0.2% of the total mass of the raw materials, polyoxypropylene glycerol ether accounting for 10%-15% of the total mass of the raw materials and water accounting for 11%-18% of the total mass of the raw materials. The polyacrylamide is firstly solved in the water, the temperature is improved to be 35-55 DEG C, other components are added after even stirring, natural cooling is performed after re-stirring to obtain the releasing agent special for the bare concrete. The appearance effect of a bare concrete cement product can be improved, the surface of the bare concrete cement product can be smooth and free of air bubbles, the releasing agent special for the bare concrete is environmentally friendly, free of pollution and low in cost, 1-7.5 times of water can be added for dilution when the releasing agent is used, 3-4 times of continuous releasing can be performed through one-time spraying, and performance is stable.
Owner:JIANGSU CHINA RAILWAY ARIT NEW MATEIRALS CO LTD

Floating filter module and water treatment apparatus and method using the same

The present invention relates to a floating filter module installed in a water treatment apparatus, such as in a public water treatment plant, a village water supply facility, a public sewage treatment plant, a wastewater treatment plant, or a village sewage treatment plant, in order to remove contamination particles. The floating filter module according to the present invention comprises: a hollow-type sintered filter having a plurality of fine pores which is arranged in wastewater within a water treatment tank in order to separate and filter the contamination particles from the wastewater introduced into the water treatment tank; a floating body connected to the sintered filter, and which floats to the surface of the wastewater within the water treatment tank so as to position the sintered filter at the upper portion of the wastewater in the water treatment tank; a main pipe communicating with an inner space of the sintered filter; a suction device coupled to the main pipe in order to provide a suction force to the sintered filter through the main pipe, thereby suctioning the wastewater in the water treatment tank through the plurality of fine pores and into the sintered filter; and a compressed-air supply apparatus having a compressed-air supply tube communicating with the inner space of the sintered filter through the main tube and an air compressor coupled to the compressed-air supply tube in order to supply compressed air into the inner space of the sintered filter, thereby releasing from the sintered filter the contamination particles that clog the fine pores of the sintered filter.
Owner:DAEWOONG ECOSYST & SOLUTION

Automatic charcoal-fire sheep roasting machine

The invention provides an automatic charcoal-fire sheep roasting machine. The automatic charcoal-fire sheep roasting machine comprises an oven, a grill, charcoal fire chambers and a control unit; the oven comprises a box body, and coaxial shaft sleeves are arranged at the upper end of the box body in pairs; a rotary shaft is arranged on the grill, the shaft head at one end of the rotary shaft is fixedly connected with a transmission device which is connected with a driving device, and the driving device is connected with the control unit; air holes are formed in the bottoms of the charcoal fire chambers which are arranged inside the box body and below the grill, and ventilation openings are formed in the positions, below the charcoal fire chambers, of the box body; the control unit comprises a rotary-shaft forward and reverse rotation motion control module, a forward and reverse rotation number control module and a master switch. The automatic charcoal-fire sheep roasting machine achieves uniform roasting heating, saves manpower, is capable of automatically controlling roasting time and short in roasting time, achieves good mouthfeel, is capable of being used for roasting multiple sheep, achieves batch roasting, saves energy, is beneficial to environmental protection, improves efficiency, reduces the number of carcinogenic substances adhering to the surfaces of the roasted sheep, guarantees cleanliness of waste gas, and has the advantages of being simple in structure, convenient to operate and low in cost.
Owner:刘文山

Boiler with pipeline impurity cleaning function based on Internet of Things

The invention relates to a boiler with a pipeline impurity cleaning function based on the Internet of Things. The boiler comprises a hearth, a first air outlet pipe, a second air outlet pipe, a descaling mechanism, a filter mechanism and a center control mechanism. The descaling mechanism comprises a first drive assembly, a lifting assembly, at least two drive rods and at least two scraper blades;the filter mechanism comprises two filter assemblies; and each filter assembly comprises a second motor, a cleaning port, a steam pipe, a baffle plate, a filter screen, a limiting block, a torsion spring, an anti-wind plate, a cleaning unit and two air cylinders. In the boiler with the pipeline impurity cleaning function based on the Internet of Things, through the descaling mechanism, water scale on an inner wall of the hearth can be effectively scraped, so that the adhesion amount of the water scale on the inner wall of the hearth is reduced, the heat conduction efficiency of the boiler isimproved, and the practicability of the boiler is improved; and through the filter mechanism, the impurities in the steam pipelines in the boiler can be filtered, so that the steam quality is improved, and the practicability of the boiler is further improved.
Owner:SHENZHEN LEILING GUANGTONG TECH DEV CO LTD

Phosphoric acid production tail gas recovery method

InactiveCN102258929AIncrease flow rateThe beneficial effect of increasing the first-level scrubber is: 1) reduce the flow rateDispersed particle separationPhosphoric acidRecovery methodPhosphoric acid
The invention relates to a method for recovering tail gas from phosphoric acid production. The process flow is as follows: the fluorine-containing gas enters the Venturi scrubber through the tail gas duct, and performs first-stage downstream spray washing with the washing liquid from the first washing pump, and the washed gas enters the first washing tower and the first washing tower. The washing liquid sent by the washing pump is subjected to the first-stage countercurrent two-layer spray washing again, and the gas after washing enters the second washing tower and the washing liquid sent by the second washing pump is subjected to the second-stage countercurrent two-layer spray washing. After being pumped by the tail gas fan, it enters the defoaming tower for defoaming, and finally discharges into the atmosphere through the chimney; the process water for washing first enters the second washing tower and is preheated and sprayed by the second washing pump, and then overflows from the second washing tower into The first washing tower is sent to the Venturi scrubber and the spraying device of the first washing tower by the first washing pump for spray washing and absorption. The beneficial effects of the present invention are: 1) reduce the gas flow rate, increase the washing and absorption efficiency; 2) preheat the washing liquid through the second washing tower, accelerate the formation of H2SiF6, and further strengthen the washing and absorption effect; 3) reduce the adhesion of the fan impeller, Reduce fan failures and corrosion of related equipment; 4) Strengthen the stability of operating indicators and increase the operating rate.
Owner:WUHAN ZHONGDONG PHOSPHATE TECH

Mining automatic high-pressure flushing type camera device and monitoring method thereof

The invention discloses a mining automatic high-pressure flushing type camera device. The device comprises a base, a camera, a conical cover, a dust induction recognizer, a controller, a high-pressureairflow hose, a high-pressure water flow hose and a telescopic spray pipe mechanism, a camera lens on the left of the camera is positioned in the conical cover; a dustproof transparent assembly is arranged on the left of the camera lens. The dust induction recognizer is arranged in the conical cover and used for monitoring dust attached to the surface of the left side of the dustproof transparentassembly, the telescopic spray pipe mechanism is arranged at the top of the left side of the conical cover and can stretch out and draw back vertically, and the lower end of the telescopic spray pipemechanism is provided with an airflow sprayer and a water flow sprayer for spraying towards the dustproof transparent assembly. According to the invention, automatic induction is realized through thedust induction recognizer; cleaning is achieved by combining high-pressure water flow, air flow and other pressure intensities, the cleanliness of the dustproof glass can be effectively guaranteed, the high-pressure air flow can effectively achieve the effects of drying and water stain removing, and therefore the workload of manual wiping can be effectively reduced, damage to the camera lens is reduced, and the service life of the camera lens is prolonged.
Owner:HENAN POLYTECHNIC UNIV
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