43results about How to "Give full play to the bonding effect" patented technology

The invention discloses a pelletizing binder with a desulfuration function and a preparation method and application of the pelletizing binder and belongs to the field of preparation of ferrous metallurgy blast furnace materials. The pelletizing binder with the desulfuration function contains the following components including, by weight, 2.5-10 wt.% of urea, 2.5-10 wt.% of Ca(OH)2 and 80-95 wt.% of bentonite. The pelletizing binder is powder which contains at least 95 wt.% of particles smaller than 0.074 mm in particle size. The defect of high cost of iron ore pellet production and desulfuration in the prior art is overcome. The pelletizing binder has the desulfuration function, can be applied to desulfuration in a pellet production process, can effectively reduce the content of SO2 in pellet smoke, relieves burden of a desulfuration system and does not affect normal pellet production. The preparation method has the advantages of being low in preparation cost and high in efficiency and is suitable for being applied and popularized.

The invention discloses a chain grate-kiln pelletizing process pre-desulfurization and pre-denitrification method and belongs to the field of steel and iron metallurgy. According to the method, a drying section I of a chain grate machine conducts drying through air extraction, an air mixture of a preheating section I and a cooling section III of a ring cooler serves as a hot air source, and an airdraft drying section II conducts drying still through air extraction; Ca<2+> chelation urea intercalated bentonite is added in the fresh pellet preparation process, a urea spraying device is arrangedon a preheating section II of the chain grate machine, and urea powder is sprayed so as to obviously reduce the NOx content and the Sox content. The method is provided for solving the conditions thata chain grate-kiln pelletizing flue gas desulfurization system under the new environmental protection standards are generally sufficient in capacity and does not conduct flue gas desulfurization yet.The Ca<2+> chelation urea intercalated bentonite is added in the fresh pellet preparation process. The urea powder is cooperatively sprayed at the preheating section II of the chain grate machine. Bycontrolling the additive amount of the Ca<2+> chelation urea intercalated bentonite and the spray amount of the urea powder, the desulfurization and denitrification effects can be controlled flexibly.

The invention discloses a production technology increasing the yield of hard alloy circular knife workblanks effectively and belongs to the technical field of production of hard alloy knives. The specific technology comprises the steps of burdening, ball mill mixing, drying, sieving rubbing, compression and sintering, recovery devices are used in all steps, the inner structure stability and yieldof hard alloy finished products are ensured, and the purpose that quality of hard alloy finished workblanks is improved is achieved. Through the whole technology, the problems that in the prior art, afinished workblank technology is improved, and the production yield cannot reach the ideal condition can be solved, and very high pertinence is achieved. In the whole process, wet grinding temperature is controlled, cooling of the drying process and humidity of mixed materials are controlled, finally a wet grinding material boat is improved, then effective discharge of paraffin is controlled, theyield of the finished workblanks can be increased greatly, and product quality is ensured. Through the recovery comprehensive utilization devices of all the steps, energy can be saved, production cost is lowered, and market competitiveness is enhanced.

The invention discloses a method for preparing a solid molded fuel from biomass liquefaction residues. The method comprises the following steps of mixing the biomass liquefaction residues, a binder and an auxiliary fuel to obtain a mixed raw material, adjusting the moisture content of the mixed raw material to 10%-20% and then carrying out extrusion molding to obtain the solid molded fuel. By the method, the resourceful utilization of the liquefaction residues can be achieved, the obtained solid molded fuel has the advantages of high density, high strength, high heat value, strong anti-absorption capacity, low cost, energy conservation and environmental friendliness, the resourceful utilization of solid wastes and biomass is achieved and the problem of the treatment and disposal of the solid wastes and biomass can be effectively solved.

The invention provides abrasion-resistant composite spraying micro-powder. The abrasion-resistant composite spraying micro-powder comprises, by mass, 27%-60% of cubic boron nitride composite micro-powder, 1-3% of metal abrasion-resistant additives and 37-70% of Co micro-powder, wherein the metal abrasion-resistant additives are composed of Cr micro-powder and Mo micro-powder, the mass ratio of the Cr micro-powder to the Mo micro-powder is 3-5:1, and the mass percentage of titanium in the cubic boron nitride composite micro-powder is 3-8%. The invention further provides a preparation method of the abrasion-resistant composite spraying micro-powder and an abrasion-resistant composite coating prepared from the abrasion-resistant composite spraying micro-powder, the preparation method is simple in process, and automatic production can be achieved easily. The abrasion-resistant composite coating has excellent abrasion resistance and is highly bonded with a matrix, and the service life of workpieces coated with the abrasion-resistant composite coating is prolonged.

The invention discloses a polymer composite material mixed with radix puerariae fiber powder. The polymer composite material is prepared from the following components in parts by weight: 6 to 12 parts of modified phenolic resin, 5 to 10 parts of nitrile rubber powder, 15 to 21 parts of radix puerariae fiber powder, 10 to 20 parts of graphite, 1 to 3 parts of antimony sulfide, 1 to 3 parts of zinc oxide, 5 to 15 parts of coke, 10 to 20 parts of calcium carbonate, 5 to 15 parts of mullite powder, 5 to 15 parts of clay, 4 to 6 parts of chromite and 1 to 3 parts of alumina. According to the polymer composite material, the radix puerariae fiber powder and the mullite powder with high specific heat are combined to enhance the polymer composite material, so that the mechanical strength of a product is increased, the heat resistance and friction and wear properties of the product can be obviously improved, and the high-performance requirement of the composite material is satisfied; additionally, an extraction process of the radix puerariae fiber powder is simple, sources are wide, the environmental requirement is satisfied, and the polymer composite material prepared from the radix puerariae fiber powder has the advantage of low cost and is suitable for industrialized mass production and use.

The invention discloses a textile necking production process, which relates to the production process field of elastic fabrics. The key points of the technical scheme are that the production is carried out according to the following process steps: S1, preparing base cloth, webbing and hot-melt adhesive film; S2, applying Hot melt adhesive film is engraved; S3, lamination of webbing and hot melt adhesive film; S4, splicing of webbing and base fabric; S5, spliced ​​pieces of base fabric and webbing are placed on the material preparation area; S6, pre-setting Process: preheat and shape the prepared semi-finished product with an electric heating mold, and heat press through the electric heating mold; S7, steam setting process: use a steam mold to shape the pre-shaped semi-finished product; S8, cooling: pass The exhaust cooling system on the steam mold cools the products after steam setting. The technical effects are as follows: 1. By punching and engraving the hot-melt adhesive film, it is reflected in the elastic part to increase the fashion trend, and the ribbon is completely dissolved in the base cloth, so that the elastic part of the formed clothing has a three-dimensional effect.

The present invention relates to a kind of SiC whisker and C-AlPO 4 The preparation method of powder synergistically modified mullite coating, selects C / SiC composite material as the substrate, prepares SiC inner coating by chemical vapor deposition method, and then uses sol- Preparation of SiC Whiskers and C‑AlPO by Gel Combined with Air Spray Process 4 Powder synergistic modification of mullite coating precursor, and finally SiC whiskers and C-AlPO can be obtained by sintering 4 Powder synergistic modification of mullite coatings. This method improves the shortcomings of the coating prepared by the traditional sol-gel process, such as easy cracking, uneven distribution, and low bonding strength, and can meet the control of micron-level coating thickness. It has the advantages of simple preparation process, low preparation cost and high preparation efficiency. , can meet many advantages such as the preparation of large-scale components and heterogeneous components, is convenient for large-scale industrial application, and has broad development prospects.

The invention discloses a waterproof material for a semi-rigid base layer surface and a preparing method of the waterproof material. The waterproof material for the semi-rigid base layer surface is prepared from, by mass, 10-15% of glass flakes, 32-40% of kieselguhr, 9-12% of sodium silicate, 8-10% of slag powder, 6-8% of graphene oxide, 4-6% of coconut oil acid diethanolamide, 2-3% of a polysiloxane defoaming agent and the balance water. The waterproof material for the semi-rigid base layer surface can permeate into a semi-rigid base layer, the compactness of the internal structure of the semi-rigid base layer can be improved, and the microstructure can be improved; besides, a smooth hardened layer is formed on the semi-rigid base layer surface, and the anti-permeability, the anti-scouring performance and the water stability of the semi-rigid base layer surface can be effectively improved so that the durability of the semi-rigid base layer can be improved, and the service life of a pavement can be greatly prolonged.