201results about How to "Prevent crusting" patented technology

The invention discloses a flucarbazone-Na compounded herbicide which comprises an active component I (flucarbazone-Na), an active component II and auxiliary components, wherein the active component II is one or a combination of several of mesosulfuron methyl, isoproturon, chlortoluron, pyroxsulam, Clodinafop-propargyl, carfentrazone-ethyl, tribenuron-methyl, fluroxypyr, methoxone, 2,4-D-butyl ester, dicamba, bromoxynil, thifensulfuron methyl, amidosulfuron, bensulfuron-methyl, flumetsulam, fluoroglycofen-ethyl and florasulam; the auxiliary components comprise an auxiliary agent and also comprise one of a filler and a solvent; the auxiliary agent is one or a combination of two of an emulsifying agent, a dispersant, a wetting agent, a disintegrant, an agglomerant, an antifreezing agent and a thickening agent; the mass sum of the active component I (flucarbazone-Na) and the active component II is 1%-85% of the total mass of the flucarbazone-Na compounded herbicide; and the mass ratio of the active component I to the active component II is (1:20)-(20:1). The flucarbazone-Na compounded herbicide disclosed by the invention is a novel herbicide for preventing and removing weeds in a wheatland.

The present invention relates to one kind of combined rolling press grinding apparatus, and belongs to the field of inorganic non-metal material grinding technology. The combined rolling press grinding apparatus includes one dispensing mechanism, one lifting and conveying mechanism, one rolling press, one ball mill, one powder concentrator, one dust collector and one fan. The present invention has the advantages of low milling loss, simple structure, several operation mode, high grinding efficiency, low power consumption, etc.

The invention discloses an anti-skinning pouring material for a cement kiln, which is prepared by using a siliceous refractory material as a skeletal material and additionally adding electrically fused magnesia-alumina spinel or silicon carbide powder, silicon nitride, alpha aluminum oxide micropowder, siliceous dust and aluminous refractory cement and a water reducing agent or explosion-proof fiber. The anti-skinning pouring material can effectively reduce the phenomena of skinning and blocking in the cement kiln so as to further reduce the faults of the cement kiln and increase the operating rate of the same, the safety of the cement kiln is effectively enhanced, and the production cost is saved.

The invention discloses a mesosulfuron-methyl compound herbicide which consists of mesosulfuron-methyl as active ingredient I, active ingredient II and auxiliary ingredients; the active ingredient II is the combination of one or more of flucarbazone-Na, isoproturon, chlortoluron, pyroxsulam, 2-methyl-4-chlorophenoxy acetic acid, 2,4-D butyl ester, dicamba, bromoxynil, amidosulfuron, bensulfuron-methyl, flumetsulam, fluoroglycofen-ethyl and florasulam; the auxiliary ingredients consists of adjuvant and one of filler and solvent, and the adjuvant is the combination of one or more of emulsifying agent, dispersing agent, wetting agent, disintegrant, binding agent, antifreezing agent and thickening agent; the sum of the weight of the mesosulfuron-methyl as the active ingredient I and the weight of the active ingredient II is 1 to 85 percent of the total weight of the mesosulfuron-methyl compound herbicide; and the weight ratio of the active ingredient I to the active ingredient II is 1:20 to 20:1. The mesosulfuron-methyl mixed herbicide is novel herbicide for wheatlands.

A drive piston valve and a foot valve may each have a valve seat in the form of a non-compressible (e.g., metal or ceramic) sealing plate having a compressible, resilient mating element that retains the ring at an inlet portion of a check valve having a housing formed of another material, such as a low-wear resin material. In some examples, the sealing plate may have a truncated corner for engaging a check ball in its closed positioned while avoiding damage to the check ball or plate resulting from a chemical encrustation build-up or other containment at the sealing edge.

The present invention relates to a double-layered alkali grain heat-insulting covering agent for middle ladle. The heat-insulting covering agent consists of top slag in 10-50 wt% and bottom slag in 50-90 wt%. The bottom slag consists of SiO2 8-15 wt%, CaO 50-60 wt%, MgO 10-20 wt%, Al2O3 1-5 wt%, Fe2O3 1-3 wt%, and fixed carbon 0.01-1 wt%. The top slag consists of SiO2 85-93 wt%, CaO 0.001-3 wt%, MgO 0.001-3 wt%, Al2O3 0.001-3 wt%, Fe2O3 0.003-0.5 wt%, and fixed carbon 0.01-1 wt%. The heat-insulting covering agent forms two layers of slag, the bottom layer covers molten steel to prevent secondary oxidation, reduce carbon content in molten steel and adsorb alumina floating to the surface of molten steel, and the top layer in porous and loose structure covers molten steel to prevent incrusting and carburization.

The invention relates to a tundish covering agent and application thereof and belongs to the technical field of tundishes in the continuous casting process. The tundish covering agent is mainly prepared from, by percentage content, 35-45% of CaO, 8-15% of SiO2, 25-30% of Al2O3, 5-15% of MgO, 5-12% of (Na2O+Li2O), 1-5% of B2O3 and 0.5-1% of TiO2. The tundish covering agent has the advantages that the melting point is low and is 1250-1350 DEG C, the viscosity is high and is 0.8-1.2 Pa*s at the temperature of 1300 DEG C, and the basicity is high and is 3-6. The tundish covering agent is applicable to the continuous casting production process, for producing the tundishes, of titanium-added steel. When the tundish covering agent is applied to the continuous casting production process of the titanium-added steel, produced TiO2, produced TiN and other produced inclusion can be effectively dissolved. The inclusion is prevented from entering a crystallizer, the cleanness degree of molten steel is improved, and therefore the quality of cast blanks is improved.

The invention relates to an ink jetting and supplying device of a unit type intaglio press. The device comprises an ink jetting tube assembly, a circulating pump, an ink fountain and an ink delivery roller assembly, wherein the ink jetting tube assembly comprises an ink jetting tube, a fixed support and an adjusting ring; the ink jetting tube is fixed on an ink delivery roller swing arm above an ink delivery roller by the fixed support; the adjusting ring is arranged on the ink jetting tube on the inner side of the fixed support; one side of the ink jetting tube is provided with an ink inlet hole; ink jetting holes are formed on the ink jetting tube and are opposite to a tangent position of a printing plate roller and the ink delivery roller; the ink delivery roller assembly comprises the ink delivery roller and the ink delivery roller swing arm; and the ink delivery roller is fixed on the ink delivery roller swing arm by a bearing and is arranged below the printing plate roller. By the structure, ink is directly jetted on the printing plate roller, and the ink delivery roller rolls the ink to fulfill the aim of fully defoaming, so that the evaporation of solvents is reduced, the fatigue rate of the ink is reduced, the ink is prevented from crusting, the disadvantages, such as ink lines, color difference and the like, are overcome, and the ink is not spattered even if the printing plate roller rotates at a high speed.

The invention relates to a novel processing method of gingered Mangnolia officinalis. The novel processing method comprises the following steps of: pretreating materials, carrying out closed accumulation for sweating, carrying out uniform stirring and covered moistening with ginger extract liquid after sweating, frying with slow fire, carrying out covered moistening, and then placing in a manner of layer-by-layer to carry out demisting. The Mangnolia officinalis treated by adopting the Chinese herbal medicine processing method is high in effective ingredient content, Mangnolia officinalis mist occurs on the surface, and the Mangnolia officinalis with mist is superior to the gingered Mangnolia officinalis and raw Mangnolia officinalis in the pharmacopeia on the anti-inflammatory and analgesic effects.

The invention relates to a double-layer middle coating agent which belongs to the field of metallurgy. The invention solves the technical problem of providing a double-layer middle coating agent capable of preventing crusting on a slag surface. The double-layer middle coating agent comprises an upper layer of slag materials and a lower layer of slag materials; wherein, the components of the lower layer of slag materials thereof comprise 40 to 60 weight portions of CaO, 20 to 40 weight portions of Al2O3, as well as 5 to 7 weight portions of CaF2; moreover, the weight ratio between CaO and Al2O3 is 1 to 3. The double-layer middle coating agent not only can prevent crusting on the slag surface, but also has stronger capacity for absorbing impurities and excellent heat preservation function; moreover, the double-layer middle coating agent can reduce the secondary pollution to molten steel and has broad application prospect.

The invention relates to alkyd resin coating preparing technology. It includes the following steps: according to mass shares fatty acid 30-40, glycerol 20-30, ion liquid 1-10 are stirring at 50-100 degree centigrade for 1-5h; adding into benzene anhydride 35-45, toluene or methyl benzene 3-6 to do back flow reaction at 220-240 degree centigrade for 3-5h; cooling, diluting, filtering to gain the alkyd resin coating. The invention is a green clear technological line which can increase esterifying reaction, reduce oxygen absorbed for coating oxidation drying, simplify operational program, reduce cost, fit for industrialization production in certain scale etc.

The present invention relates to the technical field of wastewater processing, and discloses an aquaculture wastewater processing system. The system comprises a feed hopper (1), a homogenate pool (2), a biogas pool (3), an upstream anaerobic sludge bed reactor (4), an activated sludge reaction tank (5), a micro-electrolysis reactor (10), an annular aerated biofilter (6) and an ozone disinfection pool (7) that are sequentially connected, wherein the biogas pool is connected with a sludge concentration pool (8). The present invention also discloses an aquaculture wastewater processing method. The method comprises the following steps: anaerobic digestion processing, activated sludge processing, micro-electrolysis reaction, annular aerated biofilter biochemical processing and ozone disinfection. According to the aquaculture wastewater processing system and method thereof, the technology is simple, the concentration gradient in the reaction process is large, and sludge expansion is unlikely to occur; the anti-load shock capability is strong, and the processing effect is good; and by adjusting the operation cycle and controlling the length of time of each working procedure, the effect of removing nitrogen and phosphorus is obvious.

The invention relates to the technical field of sewage treatment and discloses a system suitable for treating high concentration organic wastewater. The system comprises a feed hopper (1), a homogenizing tank (2), a biogas tank (3), an up-flow anaerobic sludge bed (4), a cyclic activated sludge bioreactor (5), a microelectrolysis reactor (10), a baffled biological aerated filter (BBAF) (6) and an ozone disinfection tank (7), which are connected in sequence, wherein the biogas tank is connected with a sludge thickening tank (8); a biogas purification and storage gas supply system comprises a gas-water separator (91), a biogas desulfurizer (92), a first flame arrester (931) and a gas storage tank (94) in sequence; and the gas-water separator (91) is also connected with a gas supercharging device (95), a second flame arrester (932) and a waste heat recovery device (96). The system and the method have the beneficial effects that the process is simple; the concentration gradient in the reaction process is large, so that sludge bulking is not easy to happen; the system has strong load impact resistance and good treatment effects; and the simultaneous denitrification and dephosphorization effects of the BBAF are obvious by adjusting the cycle of operation and controlling the working procedure time length.

The invention relates to the technical field of sewage treatment and discloses a system for treating wastewater by applying activated sludge. The system comprises a feed hopper (1), a homogenizing tank (2), a biogas tank (3), an up-flow anaerobic sludge bed (4), an activated sludge reaction tank (5), a microelectrolysis reactor (10), a baffled biological aerated filter (BBAF) (6) and an ozone disinfection tank (7), which are connected in sequence, wherein the biogas tank is connected with a sludge thickening tank (8). The invention also discloses a method for treating wastewater by applying activated sludge. The method comprises anaerobic digestion treatment, treatment by adopting an activated sludge method, microelectrolysis reaction, biochemical treatment with the BBAF and ozone disinfection. The system and the method have the beneficial effects that the process is simple; the concentration gradient in the reaction process is large, so that sludge bulking is not easy to happen; the system has strong load impact resistance and good treatment effects; and the simultaneous denitrification and dephosphorization effects of the BBAF are obvious by adjusting the cycle of operation and controlling the working procedure time length.

The invention discloses a topramezone and terbuthylazine compounded herbicide which comprises an oil suspended agent mainly prepared from topramezone, terbuthylazine, an assistant and a solvent, wherein the mass percent of the topramezone is 1-60%, the mass percent of terbuthylazine is 1-40%, and the mass sum of the topramezone and terbuthylazine takes 2-90% of the total mass of theherbicide. The topramezone and terbuthylazine compounded herbicide provided by the invention is a novel herbicide composition with a good weeding effect.

The present invention provides a self-cleaning wiresaw cutting apparatus including a cleaning mechanism adapted to clean the components of the wiresaw before, during, or after a cutting process or to humidify the cutting region of the apparatus. The apparatus contains at least one dispenser adapted to dispense an aqueous fluid onto various components of the wiresaw.

The invention discloses a silicon carbide anti-skinning castable and a preparation method thereof. The castable is prepared from the following raw materials in parts by weight: 20-25 parts of flint clay brick waste material, 18-23 parts of corundum brick waste material, 16-22 parts of magnesium aluminate spinel brick waste material, 7-12 parts of silicon carbide powder, 6-10 parts of silica fume,8-13 parts of aluminum oxide powder, 9-11 parts of calcium aluminate cement, 6-8 parts of silicon nitride powder, 0.1-0.25 part of explosion-proof fiber, 1-2 part of high-temperature binder, 0.5-1 part of water reducing agent and 6-9 parts of water. The preparation method of the castable comprises the following steps: crushing raw materials; preparing an initial mixture; and preparoffing the castable. The castable disclosed by the invention is good in anti-cracking performance; the silica fume reacts with oxygen at a high temperature to generate silicon oxide, so that large gaps between explosion-proof fibers and other substances are blocked, invasion and corrosion of other substances are avoided, the skinning resistance is good, and aluminum oxide can form an aluminum oxide protection layer on the outer side of the smooth surface of silicon nitride, so that the silicon nitride is prevented from reacting at a high temperature.

The invention discloses an anti-crusting biogas pool, which comprises a biogas pool body, wherein the biogas pool body has a feeding opening, a discharging opening and a biogas outlet; a gas chamber and a fermentation chamber are arranged up and down in the biogas pool body; the discharging opening is a hydraulic chamber; and a protruding object which protrudes from an inner wall surface and is used for scraping scum is arranged in the biogas pool body. In the invention, a hydraulic biogas pool is adopted, the protruding object is arranged in the biogas pool body, the protruding object scraps the scum on the surface of feed liquid in the fermentation chamber by using the rise and fall of the liquid surface in the fermentation chamber when the biogas is produced and used, and thus, the crusting of the scum is prevented and the biogas production efficiency and safety of the biogas pool are improved.

An efficient dry-type anaerobic fermentation equipment for organic solid waste is disclosed. A horizontal main tank is provided with a material inlet, a slag outlet, a gas outlet and a liquid outlet; the main tank is inside divided into multiple fermentation chambers by separation plates, a stirrer is horizontally inserted along the center of the main tank, the bottom of the main tank is provided with a biogas discharging device which is communicated with the slag outlet, and the bottom of each separation plate is provided with a communicating pore. The efficient dry-type anaerobic fermentation equipment is high in organic loading, high in gas production efficiency, small in land occupation area and low in energy consumption, and also helps to avoid problems of biogas residue crusting and secondary pollution existed in wet-type anaerobic fermentation.

The invention relates to a water-retaining agent and a preparation method, specifically to a water-retaining agent containing aloe gel and a preparation method thereof. The water-retaining agent is prepared from the following raw materials (by weight): 3-10 parts of aloe gel, 10-20 parts of humus, 50-70 parts of plant fiber, 10-20 parts of starch, 2-3 parts of ferric sulfate, 25-35 parts of acrylic acid, 7-15 parts of acrylamide, and 80-120 parts of 27-37% aqueous alkali. The water-retaining agent provided by the invention is environment-friendly, has advantages of simple process and strong water retaining capacity, and can provide nutrients essential for growth of plants, and has effects of fixing sand and preserving water and improving soil.

The invention belongs to the technical field of steel making, and particularly relates to continuous casting crystallizer casting powder for 400 stainless steel. The continuous casting crystallizer casting powder for 400 stainless steel comprises the chemical components of, by weight percentage, 35-40% of CaO, 40-48% of SiO2, 2.0-4.0% of Al2O3, 8-10% of Na2O, 5-8% of F- and 1-2% of solid C. The chemical components of the continuous casting crystallizer casting powder for 400 stainless steel are used cooperatively, a proper smelting speed is kept while the heat preservation function is guaranteed, and an obtained casting blank is smooth in surface, regular in folding mark and free of concaves or other quality problems.