359results about How to "Strong erosion resistance" patented technology

The invention discloses a special composite isolation layer for ecological restoration of side slopes of an acid waste-rock yard, comprising a plastic biaxial geogrid, a soil improvement layer and a water discharging plate. The invention further discloses a method for ecological restoration of the side slopes of the acid waste-rock yard, comprising the following steps: arranging the composite isolation layer, an ecological rod, a geogrid mesh, a base material layer and a seed layer on side slopes, leading the plastic biaxial geogrid, the ecological rod, the composite isolation layer, the base material layer and the seed layer to act mutually, effectively improving the growth conditions of plants and leading the growth of the plants to have sufficient water and nutrients. The invention better realizes the ecological restoration and creation of ecological landscapes on the side slopes of the acid waste-rock yard without conditions for plant growth, and simultaneously guarantees the structure and stability of the side slopes, thus achieving the purposes of greening and beautifying the environment, conserving water and soil and inhibiting runoff, also having simple construction technique, easy implementation and high efficiency and being suitable for large-area application.

The invention relates to the field of environmental protection and discloses a soil conditioner, as well as a preparation method and application thereof. The soil conditioner comprises raw materials in parts by weight: 50 to 60 parts of wood fibers, 14 to 18 parts of biochar, 25 to 30 parts of humus, 3 to 6 parts of polysaccharide, 1 to 3 parts of seaweed essence, 0.001 to 0.005 part of Trichoderma and 0.001 to 0.005 part of nitrogen fixation bacteria. The invention also discloses a preparation method, the application and a using method of the soil conditioner, the soil conditioner has the advantages of improving soil physical and chemical properties and promoting the turf forming performance of plants, and the preparation and application methods are simple and convenient, so that the popularization and application are facilitated.

The invention relates to a carbon-based polymer composite material capable of being ceramized and a preparation method thereof. The carbon-based polymer composite material is formed by mixing and pressing carbon-based resin, a fiber-reinforced material, a high temperature-resistant coupling agent, aluminium silicate mineral powder and non-oxide ceramic powder, and the carbon-based polymer composite material specifically comprises the following components in parts by weight: 20-50 parts of the carbon-based resin, 10-40 parts of the fiber-reinforced material, 0.5-2 parts of the high temperature-resistant coupling agent, 10-50 parts of the aluminium silicate mineral powder and 1-10 parts of the non-oxide ceramic powder. Compared with the prior art, the composite material disclosed by the invention has the advantages of good thermal protection performance and anti-scour performance; a forming process of the composite material is simple, and aerobic thermal protection and ceramic formationare integrated; the ceramization temperature is lower and the ceramic conversion rate is higher; and the polymer composite material further has the advantages of capability of being formed by the polymer composite material process, strong designability, good mechanical properties at medium and low temperature, high ceramic conversion rate, low thermal weight loss rate, high retention rate of high-temperature strength and the like.

The invention relates to an ethylene-propylene-diene monomer(EPDM) rubber heat-insulating material with a ceramifiable ablation carbon layer, which is composed of 100 of EPDM, 5-50 of strengthening agent, 5-15 of organic fiber, 8-15 of tackifying resin, 4-15 of plasticizer, 8-20 of fire retardant and 3-12 of other auxiliary agent. According to the invention, a low melting point silicate substance such as montmorillonite and mica powder is introduced in an EPDM heat-insulating material formula, by using the characteristics of meltable performance at high temperature, a viscous liquid is generated for bonding the cracked carburization zones through physical crosslinking effect, and thereby a large solid particle network structure is formed, capability of the carbon layer for resisting volatilization internal stress of pyrolysis gas and erosion external stress of gas flow can be enhanced, denudation and shedding of the carbon layer can be reduced, and performances of anti-ablation, anti-erosion and characteristic signal transmitance of the EPDM heat-insulating material can be effectively increased. The heat-insulating material can be used for inner heat insulation of an engine and also can be widely used for producing ceramifiable wire and cable compounds and other places which requires fireproofing flame retardation.

The invention discloses a method for greening and restoring a hard side slope. The method comprises the steps of cleaning a slope surface, arranging an anchor rod, laying a galvanized wire mesh sheet,improving red sandstone into planting soil, laying a geomembrane, executing sowing, establishing an automatic irrigation system and executing operation and maintenance, wherein the red sandstone soillayers with different sandstone contents are improved by adding an improver, meanwhile spray heads are installed on a pre-buried spray system by utilizing an automatic control system, and planted plants are irrigated by using the spray heads. A sprinkling irrigation system can be automatically controlled according to temperature and humidity. The invention provides a hard slope greening restoration technology for improving red sandstone into planting soil. Long-term growth conditions are provided for vegetations, the ecological restoration requirements of a rock slope and a hard slope are met, slope protection greening planting plants are combined with a traditional vegetation concrete ecological-restoration technology, vegetation restoration and anchoring fixation are simultaneously carried out, and the vegetation growth on slopes and slope fixation can be better achieved.

The invention discloses an ecological slope protection building block and a slope protection method of the ecological slope protection building block. Four limiting columns are arranged on the top face of the ecological slope protection building block, four limiting holes matched with the limiting columns are formed in the bottom face of the ecological slope protection building block, a first plant growing hole is formed in the center of the ecological slope protection building block, limiting protruding blocks are arranged on the two opposite lateral sides of the ecological slope protection building block, and limiting grooves matched with the limiting protruding blocks are formed in the other two lateral sides of the ecological slope protection building block, so that connection of two ecological slope protection building blocks can be achieved. The slope protection method of the ecological slope protection building block includes the following steps: (1) carrying out project preparation, (2) processing a slope foundation, (3) forming a slope wall, and beginning to lay the ecological slope protection building blocks when the strength of concrete meets the design requirement, (4) laying the ecological slope protection building blocks, (5) checking the slope flatness, and (5) planting plants with flourished root systems between the first plant growing holes and second plant growing holes.

The invention discloses a rocky side slope ecological greening cultivation matrix, belonging to the vegetation cultivating technical field. The components and weight percentages of compositions of components of the matrix are as follows: 22-57 percent of organic matter, 2-5 percent of turf, 1-2 percent of grass fiber, 37-72 percent of raw soil or doras, 0-2 percent of rice chaff, 0.02-0.08 percent of water retention agent, 0.04-0.07 percent of caking agent and 0.04-0.07 percent of fertilizer. The invention has a reasonable distribution of each component and harmonious functions. The substitution of organic matter, grass fiber and rice chaff with low price and high quality for turf lowers cost. The additive fertilizer is mainly the slow release nitrogen fertilizer and the phosphate fertilizer and potash fertilizer are synthesized and mixed of different contents according to the nutrition characteristic of pioneer plant combination. Capable of supplying nutrition in the long run and stably and being popularized and applied in rocky side slope ecological greening project, the invention is characterized in light weight, a loose structure, good moisture retention and nutrient preserving.

The invention discloses a bottom water plugging agent system and process for a horizontal well. The bottom water plugging agent system for the conventional horizontal well is characterized by comprising an inorganic precipitation type system and a polysilicon system or polymer gel system.The bottom water plugging agent system for the thermal-recovery horizontal well is characterized by comprising an inorganic precipitation type system and a N2 foam system or temperature-sensitive gel system. The bottom water plugging agent process for the horizontal well comprise the following steps: (1) injecting an annular chemical plugging device by using a mechanical packer plugging device on the basis of clarifying a water outlet point so as to ensure the selectivity of the injection; (2) selecting the bottom water plugging agent system according to the temperature, the heterogeneity and other parameters of the oil reservoir at the horizontal well; and (3) injecting the bottom water plugging agent system. The bottom water plugging agent system is selected reasonably and combined properly. The technology of the bottom water plugging agent process can be applied to the horizontal well with high or ultrahigh water content to achieve the purpose of deeply plugging more than 90% of bottom water at high strength, so that the water content of the horizontal well is reduced effectively, and the productivity of the oil well is improved.

The invention discloses a supercritical carbon dioxide abrasive jet flow perforation simulation experiment system used for simulating the processes that supercritical carbon dioxide abrasive jet flow scours broken rocks and damages a sleeve pipe, comparing and analyzing different jet flow experiment effects, revealing different factor influencing rules and the like. The supercritical carbon dioxide abrasive jet flow perforation simulation experiment system is composed of a carbon dioxide liquefying device, a supercritical carbon dioxide generating device, a supercritical carbon dioxide abrasive jet flow experiment device and a carbon dioxide recycling device, wherein the supercritical carbon dioxide abrasive jet flow experiment device is composed of a jet flow surrounding pressing barrel device and an abrasive adding device and is a kernel module of the system, supercritical carbon dioxide fluid forms jet flow when passing a sprayer, and abrasives are conveyed through a stranding cage and a sand adder to be mixed with the jet flow, so that the supercritical carbon dioxide abrasive jet flow is formed and carries out perforation inside the surrounding pressing barrel. The supercritical carbon dioxide abrasive jet flow perforation simulation experiment system is safe, simple and convenient to operate, high in efficiency and capable of simulating the perforation operation of the supercritical carbon dioxide abrasive jet flow in various work conditions and being applied to experiments of fluid like liquid nitrogen.

The present invention discloses an erosion-proof face-protecting system, brick block used for said system and construction method of said system. Said method includes the following steps: preparing place, laying geotextile, connecting all the individual brick blocks and making them into flexible pad body. On the described brick block two rope holes parallel to two side edges of said brick block are set, and on the brick block and on two side edges perpendicular to said two rope holes are set projection and recessed groove. Said system is a flexible pad body or is made up by mutually connecting several flexible pad bodies.

The invention discloses a zirconium-containing high-strength wear-resistant castable, which comprises, by weight: 23-32% of brown fused alumina, 42-52% of sintered mullite, 4-8% of corundum powder, 6-10% of mullite fine powder, 3-5% of a-AI2O3, 2-5% of fused alumina zirconia fine powder, 3-5% of silica powder, 6-10% of pure calcium aluminate cement and 0.1-0.15% of a water reducing agent. The zirconium-containing high-strength wear-resistant castable is prepared by: firstly grinding and mixing the corundum powder, the mullite fine powder, the a-AI2O3 and the fused alumina zirconia powder, then adding the remaining various raw materials, and performing mixing stirring. The castable product disclosed in the invention has the characteristics of high bonding strength, strong anti-scouring performance, high compressive strength, good wear resistance, and good thermal shock resistance and stripping resistance, etc.

The invention relates to lightweight micro closed cell magnesium-containing corundum refractory aggregate and a preparation method of the refractory aggregate. The method comprises the steps of taking 80-95wt% of gamma-Al2O3 fine powder, 1-10wt% of nano alumina powder and 1-10wt% of magnesium oxide micropowder as raw materials, adding water accounting for 40-70wt% of the raw materials, mixing, wet-milling with a planet ball mill for 0.5-3h to form slurry, putting the slurry in a mold, placing under a room temperature condition for 12-24h, removing the mold, drying a demolded green body for 12-36h at 110-200 DEG C, and carrying out heat preservation for 1-8h at 1750-1900 DEG C to form the lightweight micro closed cell magnesium-containing corundum refractory aggregate. The prepared lightweight micro closed cell magnesium-containing corundum refractory aggregate has the characteristics of low apparent porosity, high closed porosity, lower volume density, small mean pore size, lower heat conductivity, and strong washout and slag erosion resistance.

The invention relates to an anti-impact efficient wear resistant material which is made of the following raw materials with the following weight ratio: 35 to 40 portions of ordinary Portland cement, 50 to 60 portions of quartz sand, 1.5 to 2 portions of sulpho-aluminate cement, 2 to 4 portions of coal ash, 0.4 to 1 portion of emulsion powders, 0.35 to 0.45 portion of dihydrate gypsum powder, 1.5 to 2.5 portions of silica dioxide powder, 0.35 to 0.45 portion of water reducing agent, 0.1 to 0.2 portion of cellulose ether and 0.1 to 0.2 portion of polypropylene staple. By adopting non-poisonous environmental protective raw materials, the anti-impact efficient wear resistant material has the advantages of impact resistance and high anti-compression strength, strong performance of high temperature resistance, good durability, long service life, environmental protection and low cost.

The invention discloses a method for performing ecological reinforcement on the soil slope surface by utilizing a composite curing agent. The method is characterized by comprising steps that a polymer curing agent, mud, water and grass seeds are mixed in proportion to form the composite curing agent, the composite curing agent is sprayed on the soil slope surface to form a curing layer with thickness of about 5-15cm on the soil slope surface, and after plants grow up, the curing layer and root systems of the plants work synergistically to achieve the ecological reinforcement on the soil slope surface. The curing layer has functions of being good in anti-scouring performance, windproof performance and water stability, breathable, capable of holding water and facilitating growth of the plants and the like, and is convenient to construct, low in cost, strong in practical applicability, ecological, and capable of protecting the environment. The method can be widely applied to ecological reinforcement on the soil slope surfaces of roads, bands and the like, further be applied to fields of mining area ecological restoration, engineering area ecological management and the like and be especially suitable for large-scale environmental building construction work, and has good social benefit and economic benefit.

The invention discloses an unfired magnesia-alumina spinel brick. The unfired magnesia-alumina spinel brick comprises the following chemical components by mass: 80 to 90% of fused magnesia, 5 to 15% of magnesium-rich magnesia-alumina spinel, 1 to 3% of micro alumina powder, 1 to 3% of aluminum-silicon alloy powder and 0.2 to 0.6% of B4C. The chemical components are bonded together by using 3.5 to 5 wt% of an added binder. The content of magnesium oxide in the fused magnesia is greater than 98 wt%, and the content of magnesium oxide in the magnesium-rich magnesia-alumina spinel is greater than 30 wt%. The unfired magnesia-alumina spinel brick provided by the invention has excellent slag reaction resistance, slag penetration resistance, anti-stripping performance, anti-scouring performance, resistance to oxidation and a long service life, does not include the harmful element--chromium, avoids pollution and harm to human beings and the environment, needs low production cost and has a wide application scope.

The invention relates to an anhydrous stemming for a large and medium sized blast furnace and a preparation method of the anhydrous stemming. The stemming comprises the raw materials of bauxites aggregate and fine powder, silicon carbide aggregate and fine powder, coke, plastic clay powder, asphalt powder and a micro powder additive, the micro powder additive comprises metallic silicon powder, metallic aluminum powder, high-carbon resin powder, alumina micro powder, silica fume, sodium carboxymethyl cellulose and sodium hexametaphosphate in parts by weight, and tar is taken as a binding agent in the producing and stirring processes. The anhydrous stemming realizes high-temperature rapid sintering of the stemming, the binding degree of new and old stemming is strengthened, the capability of resisting scouring of an iron slag of a mud drum of an iron notch is improved, the porosity of the stemming material is low, the compactness of the stemming material is good, the property of resisting corrosion and permeation of an iron slag liquid of the stemming is strengthened, the stemming is favorable for keeping the depth of the iron notch and the stability of the pore size of the iron notch, and can well adapt to the performance requirement of enlargement of the blast furnace on the stemming of the iron notch.

The invention discloses a preparation method of a thermal barrier coating of lanthanum zirconate fiber doped lanthanum zirconate, and relates to a preparation method of a thermal barrier coating. The technical problems that a novel lanthanum zirconate thermal carrier coating is poor in erosive wear resistance and is likely to lose efficacy when impacted by external particles are solved. The preparation method comprises the steps that a composite lanthanum zirconate ceramic layer spraying powder material is prepared; a bonding layer spraying material is sprayed to the surface of preprocessed matrix metal; a layer of composite lanthanum zirconate ceramic layer spraying material is sprayed to a bonding layer. Compared with a traditional thermal barrier coating which is not reinforced by fiber, the erosive wear resistance of the thermal barrier coating system is higher. The preparation method is applied to the field of composite materials.

The invention discloses a BB cream having whitening, moisturizing and makeup-dizziness preventing functions. The BB cream consists of the following components: glycerol, cyclopentasiloxane, titanium dioxide, cetyl ethyl hexanoate, cetyl PEG / PPG-10 / 1 polydimethylsiloxane, dipropylene glycol, nicotinamide, caprylic / capric triglyceride, ethylhexyl palmitate, PEG-75 meadowfoam seed oil, hydrogenated polydecene, sodium chloride, quaternary ammonium salt-18 bentonite, white beeswax, argania spinosa kernel oil, tocopherol, CI 77492, panthenol, CI 77491, CI 77499, phenoxyethanol, allantoin, methylparaben, propyl hydroxybenzoate, sodium hyaluronate, essence, EDTA disodium, butylated hydroxytoluene, adenosine and water. By virtue of the meadowfoam seed oil, the adenosine, the argania spinosa kernel oil, the panthenol and the nicotinamide, the functions of the finished BB cream are effectively expanded, so that the BB cream is better in moisturizing performance, makeup-dizziness preventing performance and whitening performance.

The invention relates to an arrangement method of an ecological gabion chamber revetment type, and belongs to a revetment structure type in river training works. A stepped sandstone cushion layer is laid on the revetment of a river; a sinuous ecological gabion chamber is arranged on the stepped sandstone cushion layer; and plants are planted in the sinuous ecological gabion chamber. The arrangement method has the advantages of novel structure, reliable operation, wide application range, capabilities of improving the engineering safety and favorably improving water eco-environments of rivers and lakes and great application prospect.

The invention relates to an aluminium titanate mullite composite monoblock stopper and a preparation method thereof. The stopper body and the stopper head of the monoblock stopper are prepared by the same materials. The mass percentages of the materials are as follows: 15-25% of mullite particles with the granularity of 1-3 mm, 5-15% of aluminium titanate particles with the granularity of 1-3 mm, 10-20% of mullite particles with the granularity less than or equal to 1 mm, 15-25% of aluminium titanate particles with the granularity less than or equal to 1 mm, 10-16% of aluminium titanate powder with the granularity less than or equal to 325 meshes, 19-25% of mullite powder with the granularity less than or equal to 325 meshes and 3-5% of an additional binding agent. The monoblock stopper has excellent whole structural properties, prevents the oxidation problem produced by using carbon-containing materials, has relatively high liquid erosion resistance and relatively long service life, can solve the problems of falling off of sleeve brick-type stopper head and stopper cracking, simultaneously creates conditions for casting high oxygen and ultra-low carbon steel, and provides conditions for guarantee of the service life of the stopper after a submerged nozzle is changed quickly.

A non-carbon long sprue without baking is composed of the main body made of flake graphite, white electro-corundum, fused quartz, electrofused zirconium mullite, silicon carbide and metallic silicon powder, the liner A made of electrofused zirconium mullite, electrofused Ag-Al spinel, light-burnet alumina, and metallic aluminium powder, and the linear B made of fused quartz, white electro-corundum, hollow balls of zirconium oxide and light-burnt alumine. Its advantages are high resistance to heat shock, flushing and corrosion, and long service life.

The invention relates to the field of environmental protection, and discloses a device for protecting a slope from scouring erosion of runoff. The device comprises a reinforced three-dimensional polypropylene mesh pad, an anchor rod, U-shaped nails, soil improvement fiber mixtures, vegetation seeds, anti-erosion fiber mixtures, weights and a non-woven fabric; the reinforced three-dimensional polypropylene mesh pad is fixed on an anchoring groove of the slope through the anchor rod and then is filled with the weights, and the reinforced three-dimensional polypropylene mesh pad is anchored on the surface of the slope and the surface of the anchoring groove of the slope through the U-shaped nails; a mixture of the vegetation seeds and the soil improvement fiber mixtures and a mixture of the vegetation seeds and the anti-erosion fiber mixtures are sequentially sprayed on the surface of the reinforced three-dimensional polypropylene mesh pad; and the non-woven fabric covers the surfaces ofthe vegetation seeds and the anti-erosion fiber mixtures to form the device for preventing the slope from the erosion of the runoff. Therefore, the device is suitable for ecological protection of various slopes, dams, river shoals and the like, has strong anti-erosion performance and can effectively resist the scouring erosion of the runoff.

The invention discloses a high-density ultrahigh-purity magnesia-calcium brick and a preparation method thereof. The high-density ultrahigh-purity magnesia-calcium brick is prepared from 9 to 16% of magnesia-calcium sand having particle sizes of 5-7mm, 9 to 16% of magnesia-calcium sand having particle sizes of 3-5mm, 9 to 16% of magnesia-calcium sand having particle sizes of 1-3mm, 13 to 32% of magnesia-calcium sand having particle sizes of 0.5-1mm, 5 to 25% of magnesia-calcium sand having particle sizes less than or equal to 0.5mm, 5 to 10% of high-purity magnesia sand fine powder having particle sizes less than or equal to 0.044mm, 2 to 5% of tar resin or paraffin, and 2 to 5% of fused zirconia. The preparation method comprises the following steps of raw material proportioning, raw material blending, mixing, molding, sintering, waxing and vacuum aluminium foil package. The high-density ultrahigh-purity magnesia-calcium brick has a high product compact degree and excellent hydration resistance. The high-density ultrahigh-purity magnesia-calcium brick has high purity and thus high slag corrosion resistance and high flushing resistance are obtained. Compared with other like products, the high-density ultrahigh-purity magnesia-calcium brick has better thermal shock resistance. The high-density ultrahigh-purity magnesia-calcium brick contains a large amount of dissociative CaO and thus the high-density ultrahigh-purity magnesia-calcium brick has excellent molten steel cleaning performances and is especially suitable for production of high cleanliness steel such as stainless steel.

The invention relates to a coating-processing process for marine-climate resisting engineering-part surface coatings, which comprises the followings steps of: preprocessing a workpiece; configuring a coating solution, wherein the coating solution comprises aluminum-zinc-silicon alloy powder, an organic solvent, a nano-oxide particle enhancer, deionized water, a binder, a corrosion inhibitor, a dispersant and a thickener; coating; preliminarily drying; roasting and curing; cooling; and coating for the second time after cooling the roasted workpiece to the room temperature.

The invention relates to a bottom bonding material used in preservative treatment of a chimney and a flue. The bottom bonding material is modified silicon rubber (M50), and surface modified polytetrafluoroethylene (DS1) of a surface preservative material is bonded to the inner walls of the chimney and the flue; the modified silicon rubber (M50) is formed by modifying room-temperature vulcanized silicon rubber through nano SiOx and TiO2 additives, and the weight ratio of the room-temperature vulcanized silicon rubber to the nano SiOx to the TiO2 is 100:2-6:1-3; and x in the nano SiOx is 1.2 to 1.6. The bottom bonding material can provide effective bonding for DS1 (surface modified polytetrafluoroethylene board) with temperature resistance and strong corrosion resistance in the preservative treatment of the chimney and the flue so that an integral preservative layer has good temperature resistance, strong adhesive force, super-strong acid resistance, good thermal shock resistance, good weather resistance, strong permeability resistance, strong pollution resistance and good scouring resistance.

The invention discloses a silicon nitride fiber-enhanced silicon dioxide and boron nitride ceramic matrix composite and a preparing method and application thereof. The silicon nitride fiber-enhanced silicon dioxide and boron nitride ceramic matrix composite is prepared from a Si3N4 fiber prefabricated member, a SiO2 ceramic matrix and a BN ceramic matrix, wherein gaps of the Si3N4 fiber prefabricated member are filled with the SiO2 ceramic matrix and the BN ceramic matrix. The preparing method comprises the steps that firstly, the Si3N4 fiber prefabricated member is subjected to super glue heat treatment; secondly, a Si3N4f / SiO2 composite midbody is prepared; thirdly, a Si3N4f / SiO2-BN composite midbody is prepared; fourthly, decarbonization treatment is carried out. The composite has the advantages of being high in density, good in temperature resistance and high in carrying capacity, having a high dielectric property and the like, and the composite has high application value in the high-temperature wave-transmitting material field; the preparing method is simple in process, relatively low in cost and suitable for industrialized production.

The invention discloses a preparation method of a wear-resistant high-temperature-resistant casting material, belonging to the technical field of refractory materials. The preparation method comprises the following steps: by using alumina ceramic product waste with different grain sizes as a main material, waste dust with different grain sizes collected in a high-temperature alumina powder production process as an auxiliary material, calcium aluminate cement as a binder, silicon micropowder and active alpha-Al2O3 micropowder as reinforcers, and dry powder high efficiency water reducing agent, sodium tripolyphosphate and sodium hexametaphosphate as compound additives, filling into a strong stirrer, stirring for 10-20 minutes until the materials are evenly mixed, and bagging. By using production waste as the main raw material, the wear-resistant high-temperature-resistant casting material has the advantages of low price, low use cost, high density, high strength, small linear variation after firing, excellent wear resistance, excellent scour resistance, excellent corrosion resistance, high temperature resistance, favorable high-temperature stability and long service life.

The invention particularly relates to a corundum dry type ramming material for a medium-frequency induction furnace and a preparation method of the corundum dry type ramming material. According to thetechnical scheme, 48-68wt% of fused alumina particles, 20-40wt% of tabular corundum and 6-16wt% of fused magnesia are used as raw materials, 0.5-1.5wt% of the raw materials of yttrium oxide micro powder, 0.5-1.0wt% of titanium dioxide fine powder, 0.5-2.0wt% of ZrOCl<2>.8H<2>O fine powder and 0.5-1.0wt% of nickel oxide fine powder are additionally added, uniform mixing is performed, and the corundum dry type ramming material for the medium-frequency induction furnace is obtained. The prepared corundum dry type ramming material for the medium-frequency induction furnace has the characteristicsof high refractoriness, good volume stability, high high-temperature strength, good anti-strip performance, excellent anti-scour performance and good anti-erosion performance.

The present invention discloses a high-yield corn seed coating agent, which is characterized in that the raw materials comprise, by weight, 5-7 parts of brassinolide, 13-15 parts of a filler, 4-6 parts of gibberellin, 3-5 parts of 6-benzylaminopurine, 0.3-0.5 part of a plant growth regulator, 4-6 parts of salicylic acid, 12-14 parts of oligosaccharin, 3-6 parts of a film forming agent, 0.8-1.2 parts of a binder, 0.4-0.6 part of gamma-polyglutamic acid, 0.06-0.08 part of polyoxyethelene alkyl ether, 0.3-0.5 part of thiophanate-methyl, and 0.2-0.4 part of imidacloprid. The high-yield corn seed coating agent of the present invention has characteristics of seed germination promoting, seedling growth and development promoting, corn seed growth rate increasing, good film-forming function, good slow release function, good biocompatibility with crops, seedling quality improving, pesticide efficacy increasing, strong erosion resistance, effective plant disease and insect pest incidence rate reducing, maintenance cost reducing, and seed germination rate improving, and can slowly release the effective components during the seed germination process.