36results about How to "Realize value-added utilization" patented technology

The invention relates to a method for preparing a permanent magnet strontium ferrite by utilizing iron oxide red and belongs to the fields of comprehensive utilization of resources and material synthesis. The method for preparing the permanent magnet strontium ferrite by utilizing the iron oxide red comprises the following steps: (1) mixing the iron oxide red obtained by rolling steel scale and strontium carbonate, and then carrying out ball milling; (2) mixing the material obtained through the ball milling with fused salt, and then calcining; and (3) cleaning the materials obtained after reaction, and drying, so that the permanent magnet strontium ferrite product is obtained. The method for preparing the permanent magnet strontium ferrite by utilizing the iron oxide red has the advantages that the synthetic permanent magnet strontium ferrite is small in granularity and uniform in composition, large-scale production can be realized, and the fused salt can be recycled; value-added exploration of a secondary resource, namely the iron oxide red obtained by rolling the steel scale, is realized, and the energy is saved; the prepared permanent magnet strontium ferrite is uniform in granularity distribution, and the grain size is 0.5-3mu m; and the coercive force value is 2687-4043Oe, the residual magnetism is 32.92-35.37emu/g, the saturated magnetic intensity is 59.57-62.29emu/g, and the maximum magnetic energy product is 0.42-0.61MG.Oe.

The invention provides the preparation method of multifunctional feedstuff additive by using shell manufacturing leftover bits and pieces as the raw material, wherein two products of fresh flavor agent and feed addictive can be prepared, the process comprises the steps of excorticating, fragmenting biological tissue, extracting through water boiling, removing alkaline protein with hydrochloric acid and NaOH solution deposition, liquid-solid separating, adjusting pH to be 4-5, disintegrating through ion exchange process and enriching, distilled water eluting, collecting the effluent liquid, drying and disintegrating the solid body.

The invention discloses an edible mushroom bag based on a walnut shell/dreg and a preparation method and application thereof. The mushroom bag is prepared from the following components in parts by mass: 100 parts of walnut shell/dreg complex, 0.1 to 0.5 part of urea, 0.1 to 1 part of superphosphate, 1 to 2 parts of gypsum and 150 to 160 parts of water; the walnut shell/dreg complex is prepared from the following components in percentage by mass: 30% to 50% of walnut shell, 30% to 50% of walnut dreg, and 10% to 20% of maize straw, and the total mass percentage of the components is 100%. The walnut shell and the walnut dreg, which are by-products in production of walnut milk, are used for comprehensively developing a novel edible mushroom bag, so that the value-added exploitation of the by-products is realized, and the resources are efficiently converted; moreover, the novel mushroom bag is better in substrate nutrition and permeability, thereby facilitating mycelial growth, increasing the fruiting rate, shortening fruiting time, and significantly shortening the production cycle.

The invention relates to the technical field of information classification, in particular to a multi-mixing method product information classification and coding method used for classifying product information on a website or system platform. Firstly, according to product or information attributes, a linear classification method or a surface classification method is selected to use, and the product information is classified according to subjects with the linear classification method; when the linear classification method or the surface classification method is insufficient to express an integral structure or a hierarchical relationship, the linear classification method and the surface classification method are fused; since the simple linear classification method is insufficient to integrally express product structure information, the product information is expanded according to different fields and dimensions; and in the linear classification method, one-dimensional linear classification is fused to form multidimensional classification, i.e., surface-shaped classification, so as to improve data retrieval quality and accuracy, reduce redundancy, realize the value added utilization of public information resources and lay a solid foundation for constructing a steady and integrated data model.

The invention discloses a dry-mixed mortar containing sintered dry desulfurization ash and recycled water plant sludge and a preparation method thereof, and solves the technical problem of high manufacturing cost of the existing dry-mixed mortar. According to the technical scheme, the dry-mixed mortar containing sintering dry desulfurization ash and recycled water plant sludge comprises the following raw material components in percentage by mass: 20 to 28 percent of sintering dry desulfurization ash, 30 to 40 percent of recycled water plant sludge, 20 to 28 percent of sand, 10 to 12 percent ofcement, 6 to 7 percent of fly ash, 1 to 3 percent of nano aluminum powder and 0.1 to 0.6 percent of sodium sulfate, wherein the sum of the mass percentages of all the raw material components is 100 percent. The dry-mixed mortar provided by the invention is simple in preparation process and low in production cost, so that the invention achieves value-added utilization of sintered dry-process desulfurized ash, recycled water plant sludge and fly ash.

The invention relates to the technical field of landscaping facilities, in particular to a roof greening cultivation system based on biomass utilization and a preparation method thereof. The roof greening cultivation system based on biomass utilization comprises a protective shell, a seedling raising layer and a planting layer, wherein the seedling raising layer is a product obtained through fermentation of a first biological raw material, and the planting layer is a product obtained through mixed fermentation of a second biological raw material, livestock and poultry manure and wood vinegar; the protective shell is composed of biomass ash extracted by wood vinegar, cement and a third biological raw material; and the first biological raw material and the biomass ash are pretreated by wood vinegar. A traditional complex roof greening cultivation system is compressed and integrated into a three-layer multifunctional composite system, and biomass pyrolysis waste is combined to treat agricultural waste so as to regulate and control the comprehensive performance of the system, so that the system is better in stability, more complete in function and suitable for mechanical transplanting operation, the raw material cost, the maintenance cost and the construction cost of the roof greening cultivation system can be reduced to a high degree.

The invention provides a preparation method of methylamine. The preparation method comprises the following step: preparing methylamine by utilizing an amine methylation reaction, wherein in the aminemethylation reaction, the catalyst is dodecyldimethylamine caprolactone. According to the invention, additives required by the reaction are effectively reduced, and the post-treatment process after the reaction is finished is simplified.

The invention discloses a cleaning process for value adding utilization of nickel-contained pyrite burning slag. The process firstly performs efficient leaching for the nickel-contained pyrite burning slag to obtain leaching liquid and leaching slag containing iron and nickel; and then, the sacrifice anode electric reinforcing reduction purification is performed for the leaching liquid, so that impurity elements in the leaching liquid are deeply reduced into reduction purification slag through an electric reinforcing reduction method. The process realizes the value adding utilization of the pyrite burning slag. A new technological process is a closed cycle, and a leaching agent can be recycled, so that the cleaning process preferably solves such problems as heavy pollution and low metal recovery rate generally generated in a traditional pyrite burning slag treatment process, is suitable for treating other various wastes containing iron and nickel, and has the prominent advantages of high adaptability to raw materials, simple technological process, high recovery rate of valuable elements, cleanness and environmental protection.

The invention discloses a non-combustible non-immersible steel ladle upper nozzle and a preparation method thereof, and relates to the technical field of preparation of a steel ladle upper nozzle. Specifically, alumina-chrome slag is introduced into raw materials of the steel ladle upper nozzle and is used for replacing partial tabular corundum or white corundum, and metallic aluminum, metallic silicon and boron carbide are added, so that the pollution problem of alumina-chrome slag solid waste can be effectively solved, value-added utilization can be realized, and the cost of raw materials per tonnage can be reduced by 400 to 800 yuan; the prepared steel ladle upper nozzle has the advantages that the high-temperature strength is high, the thermal shock stability is good, and molten steelcorrosion resistance is strong, the steel ladle upper nozzle can be used on a continuous casting steel ladle upper nozzle which is 100 to 150 tonnage, and the using requirements of 15 to 20 times canbe achieved.

A preparation method of catfish visceral protease includes extraction, salting out, dialysis and purification and has the beneficial effects: extracted protease has high purity and stable activity, can be used as an enzymatic hydrolysis agent for hydrolyzing a variety of food proteins, realizes the value-added use of catfish viscera, and improves the economic added value of catfishes. At the sametime, the high-purity protease extracted by the method can improve lymphocyte activity, thereby enhancing the body ability to prevent and resist diseases, and also having unexpected effect of scavenging free radicals in organisms.