5results about How to "Solve refractory" patented technology

The invention discloses a method for smelting direct reduction iron through an electric furnace. The method comprises the following steps that S1, a direct reduction iron raw material with the high carbon content is obtained through a shaft furnace; s2, a molten pool is firstly formed in the electric furnace; s3, the direct reduction iron raw materials are added into an electric furnace molten pool in batches for electric furnace smelting; in each charging process, a direct reduction iron raw material is firstly put into an electric furnace molten pool, then scrap steel is put into the electric furnace molten pool to press the direct reduction iron into the molten pool, lime is added after the direct reduction iron is completely molten, and then charging is continued; and S4, after melting in the electric furnace molten pool is completed, blowing oxygen to stir the molten pool for continuous smelting until carbon in the molten steel reaches the standard. The melting efficiency of the direct reduction iron can be improved, and the power consumption cost is reduced.

The invention discloses a biodegradable butyronitrile glove and a preparation method thereof.The biodegradable butyronitrile glove has good biodegradability under the condition that the tensile strength, wear resistance and acid and alkali resistance of the glove are kept, and the glove can be used for preparing a glove through metabolism and enzyme effects in the natural environment; the glove can be degraded into organic matters and finally decomposed into natural elements, the problem that the butyronitrile glove is difficult to degrade is solved, and the natural environment is protected.

The invention relates to a hydrogen storage high-entropy alloy and a preparation method and application thereof, and belongs to the technical field of hydrogen storage alloys. The invention relates to a hydrogen storage high-entropy alloy. The chemical formula of the hydrogen storage high-entropy alloy is Mg < x > Ti < Zr > Ni < Cr > M < y >, wherein, xgt; 0, ygt; 0, and x + y = 2; m is at least one of Fe, Mn, Co, Cu and Al. The hydrogen storage high-entropy alloy MgxTiZrNiCrMy provided by the invention can be automatically activated at low pressure and room temperature, the initial hydrogen absorption amount of the alloy reaches 3.35 wt.%, the initial hydrogen desorption amount of the alloy reaches 2.69 wt.%, and the alloy has excellent reversible hydrogen absorption and desorption performance, not only can effectively absorb hydrogen, but also can effectively dehydrogenate, and also has good cycle stability.

The utility model belongs to the technical field of disposable lunch boxes, and particularly relates to a biodegradable disposable lunch box which comprises a box body formed by hot press molding of a bamboo fiber matrix, the box body comprises a box bottom and a box cover which extends upwards along one end of the box bottom and can be buckled in a separable mode, a buckling groove which extends outwards horizontally is formed in the edge of the other end of the box bottom, and a buckling skirt edge is arranged at the position, corresponding to the buckling groove, of the box cover; the top end face of the box bottom and the bottom end face of the box cover are each provided with a contact plane, the two contact planes are folded outwards in the horizontal direction to form horizontal reinforcing edges, and the thickness of the horizontal reinforcing edges is larger than that of the box body. The box body formed by hot pressing of bamboo fibers is free of chemical harm and biodegradation, pollution is reduced, the environment-friendly, safe and sustainable requirements are met, the meal box is provided with the separable buckling cover and connected through the groove edge, sealing is guaranteed, food is prevented from overflowing, the top face of the box bottom cover is provided with the contact plane and the reinforcing edge, the structural strength is improved, deformation is prevented, durability is achieved, and use is guaranteed.

This invention provides a method for preparing an aluminum-silicon-copper sputtering target. The method includes: (I) providing aluminum, silicon, and copper raw materials, and dividing the aluminum raw material into two parts; (II) melting one part of the aluminum raw material to obtain an aluminum melt, then adding the silicon and copper raw materials to the aluminum melt, and performing a first melting at a first temperature to obtain a primary alloy melt, adding the remaining aluminum raw material to the aluminum-silicon-copper alloy melt, and performing a second melting at a second temperature to obtain a secondary alloy melt; (III) sequentially degassing, refining, and slag removal from the secondary alloy melt to obtain a purified alloy melt; (IV) sequentially casting and cooling the purified alloy melt to obtain an aluminum-silicon-copper ingot; wherein the first temperature is higher than the second temperature. This invention solves the problem of Si element aggregation in high-purity aluminum-silicon-copper alloys and can avoid silicon segregation in alloy ingots.