30results about How to "Avoid high temperature sintering process" patented technology

The invention relates to a preparation method of a porous oxide semiconductor nano-film. The technical scheme of the preparation method is as follows: a film is simultaneously or alternately deposited on the surface of a substrate in the presence of Ar or a mixed atmosphere of Ar and O2 by using a co-sputtering technique and adopting an oxide semiconductor target (or a corresponding metal target) and a pore former target, then a composite nano-film with an oxide phase and a pore former phase is preformed, after the preformed composite film is washed by water, a pore former is dissolved, then a porous nano-film is obtained, finally, the film is dried and annealed to obtain a nano-film with good crystallinity, high orientation and high porosity.

The invention discloses a compound fertilizer rich in mineral substances. The compound fertilizer rich in mineral substances comprises the following raw materials in percentages by weight: A, 10-80% of mineral particles which are separated from coal or coal gangue before combustion or chemical conversion of the coal or coal gangue; B, 0-10% of an organic chelating agent; C, 5-40% of animal dung/algae raw materials which are treated biochemically; and optional D, 5-50% of at least one of a nitrogen fertilizer, a phosphatic fertilizer and a potash fertilizer. The mineral particles are rich in at least one of B, Ca, Cl, Cu, Fe, Mg, Mn, Mo, S and Zn which are necessary secondary and microelements for growth of plants. Mineral wastes in the coal chemical industry can be utilized economically and efficiently. The invention further discloses a preparation method of the compound fertilizer rich in the mineral substances.

The invention discloses a manganese tailing water permeable brick and a preparation method thereof. The manganese tailing water permeable brick comprises a base layer and a facing layer, and a base layer blank comprises the following raw materials in parts by mass: 40-60 parts of manganese tailings, 10-15 parts of cement, 15-20 parts of water and 0.135-0.38 part of a pore forming agent; the facinglayer blank is prepared from the following raw materials in parts by mass: 35 to 50 parts of manganese tailings, 10 to 15 parts of cement, 15 to 20 parts of water and 0.12 to 0.34 part of pore forming agent. The components such as SiO2 and Al2O3 in the tailings have potential gelling activity; under the action of cement, the gelling property can be exerted and the basic conditions for making bricks can be met; manganese ore is used as a main raw material, a small amount of cement is used as a cementing material, a pore-forming agent is added for uniform mixing and stirring, the water permeable brick is prepared through compression molding and maintenance, the raw materials are easy to obtain, the preparation process is simple, a high-temperature sintering process is avoided, energy consumption is greatly reduced, meanwhile, the raw material cost is reduced, and industrialization is facilitated.

The invention discloses a preparation method for a reinforced titanium matrix composite of a three-dimensional network-shaped carbon nanotube. The method comprises the processes as follows: sodium chloride powder and pure titanium powder are mixed into a blank, and sintering and dissolution are performed, so that porous titanium is obtained; and the porous titanium is immersed into a catalyst solution prepared through cobalt nitrate or nickel nitrate and yttrium nitrate, and the porous titanium loaded with catalyst salt is subjected to calcination, hydrogen gas reduction and catalytic cracking, so that the reinforced titanium matrix composite of the three-dimensional network-shaped carbon nanotube is obtained. The preparation method has the advantages as follows: on one hand, a catalyst, a growth technology and the like are adjusted, so that the carbon nanotube with homo-disperse and an integral structure can directly grow on the porous titanium; and on the other hand, the porous titanium can be directly taken as a composite material matrix, so that a subsequent high-temperature sintering process is avoided, an integral structure of the matrix and a reinforced phase is guaranteed, and the preparation process of the method is simple, and the implementation and the promotion are facilitated.

The invention discloses a preparation method of a silicate positive electrode material for a lithium ion battery, which comprises the following steps of: dissolving manganous sulfate and ferrous sulfate into distilled water, after the manganous sulfate and the ferrous sulfate are completely dissolved, stirring while dripping 3-5mol/L of sodium hydroxide solution until the pH value is 11-13 so as to ensure that manganese ions and iron ions are completely precipitated; then filtering the precipitates and cleaning the precipitates with the distilled water; mixing the precipitates with silicon dioxide, lithium hydroxide and lithium nitrate; and carrying out one-step sintering on the mixed materials for 8-12h in the presence of inert gas shielding at 550-600DEG C to obtain Li2Mn1-xFexSiO4 powder as the silicate positive electrode material. The invention has the advantages that one-step sintering is only needed, is the method is simpler and more convenient compared with the traditional process with multiple sintering; meanwhile, because a high-temperature sintering process is avoided in the method, the positive electrode materials prepared are uniform with good dispersity, thereby ensuring that the prepared positive electrode material has favorable electrochemical property.

The invention discloses a preparation method of a multilayer reticular zirconium oxide fiber reinforced resin-based material. According to the method, industrial ceramic waste is recycled and utilized, test methods which are easy to operate such as solid-phase reaction, infiltration and coating are adopted, and substances such as PTFE, resin, ethylene glycol, sodium carbonate and absolute ethyl alcohol related to the method are simple and easy to obtain. According to the structural characteristics of ceramic powder and zirconium oxide fiber cloth, a two-way interface modification mode is adopted, so that the bonding between interfaces is improved; the zirconium oxide fiber cloth with impact resistance, stress stretching resistance, light weight and high temperature resistance is combined with the ceramic powder by virtue of the excellent wrapping compatibility of the resin and the zirconium oxide fiber cloth, so that a zirconium oxide fiber cloth-resin-ceramic powder multi-element system with a reticular structure is constructed. The method has the advantages of greenness, environmental friendliness, low cost, simplicity and feasibility. The prepared reticular zirconium oxide fiberreinforced resin-based material is stable in structure, excellent in friction and wear resistance, high in high-temperature resistance, large in friction coefficient, light in weight and high in strength.

The invention discloses a method for promoting the aerobic composting maturing process and improving the composting quality, which comprises the following steps: performing aerobic composting fermentation maturing on a mixture of an organic material and maturing-promoting mineral particles, the maturing-promoting mineral particles comprise mineral particles separated from coal or coal gangue before combustion or chemical conversion, the chemical conversion comprises coal pyrolysis, coal gasification, coal liquefaction, coal dry distillation or coal coking. The method provided by the invention can promote the aerobic composting process and improve the composting quality.

The invention provides a method for processing a temperature equalizing plate, comprising: providing a first cover plate provided with a first groove and a second cover plate provided with a second groove; cold spraying the first cover plate to forming a first capillary structure in the first groove; cold spraying the second cover plate to form a first capillary unit in the second groove; cold spraying the first capillary unit to form a first capillary unit on the first capillary unit Two capillary units, the cross-sectional area of ​​the first capillary unit is larger than the cross-sectional area of ​​the second capillary unit in the direction from the hot end of the vapor chamber to the cold end; the first cover plate and the second cover plate are covered to make the The first capillary structure is in contact with the second capillary unit, and the first cover plate and the second cover plate are fixedly connected to form a closed inner cavity between the first cover plate and the second cover plate. The method for processing an equalizing plate provided by the invention can reduce the manufacturing cost of the equalizing plate, improve the structural strength of the equalizing plate, and improve the heat dissipation effect of the equalizing plate.