7results about How to "Save natural resources" patented technology

This invention belongs to the field of solid waste resource utilization technology, and relates to a method for firing sulfuric acid slag-based vitrified aggregate with adjustable expansion ratio. The method involves drying sulfuric acid slag, phosphorus mud, and contaminated soil, followed by ball milling to obtain powder; mixing the powder with an expansion agent to obtain a mixture; granulating the mixture with water to form aggregate blanks; heating the aggregate blanks to 100-120℃ for drying; preheating the dried aggregate blanks to 300-600℃, then further heating to 1080-1200℃ for firing; and finally, rapidly cooling the sintered aggregate blanks at room temperature to obtain the final product. This firing method not only allows for adjustment of the expansion ratio and density of sulfuric acid slag-based vitrified aggregates during the preparation process, but also enables high-value resource utilization of various difficult-to-treat solid wastes.

The application provides a method and system for preparing low-carbon cement by using coal gasification ash in a graded manner, and the method comprises the following steps: dividing the coal gasification ash into carbon-rich ash, medium-carbon ash and carbon-poor ash according to the carbon content; feeding the carbon-rich ash and raw coal into a coal powder preparation workshop to prepare a first mixture as a clinker calcination fuel; feeding the medium-carbon ash into a raw material preparation workshop after metering to be ground and dried together with other raw material components; preparing clinker by decomposing and calcining the second mixture after mixing uniformly and cooling; feeding the mixture of the clinker and other cement components and the carbon-poor ash into a cement preparation workshop to prepare finished cement. The carbon content of the coal gasification ash is divided in a graded manner to obtain coal gasification ash materials with different characteristics, and the cement production process characteristics are combined to be used in three process sections of raw material grinding, clinker calcination and cement grinding, so that the coal gasification ash is used in a large amount and in a large scale in the building material resources, and the carbon emission in the cement clinker production process is reduced.

The application belongs to the technical field of nanocomposites, and particularly relates to a core-shell type thermite, a preparation method and application in a biomass blasting device. The preparation method comprises the following steps: S1, adding fly ash into a hydrochloric acid solution to dissolve the fly ash, then filtering to obtain a filtrate, adding a sodium hydroxide solution into the filtrate, then performing stirring, filtering and drying treatment to obtain a precipitate, calcining the precipitate to obtain iron oxide particles for standby; S2, adding aluminum powder and boron powder into an organic solvent to perform ultrasonic mixing, then performing heating and stirring to volatilize the organic solvent to obtain an aluminum-boron compound, and drying for standby; S3, adding the iron oxide particles, the aluminum-boron compound and an adhesive into an acetone solution to mix uniformly to obtain a mixture, performing stirring and ultrasonic treatment on the mixture to obtain a suspension; adding a polyvinyl alcohol emulsifier into deionized water and performing heating and stirring to obtain an emulsion; S4, in a high-speed dispersion homogenizer, adding the suspension dropwise into the emulsion to wrap the suspension in the emulsion to obtain an oil-in-water emulsion, and performing evaporation, filtering, washing and drying treatment on the oil-in-water emulsion to obtain the core-shell type nano thermite.

The application relates to the technical field of medical devices, in particular to an exosmosis detection device based on a skin deformation sensor, which comprises an induction assembly and a terminal assembly; the induction assembly and the terminal assembly work cooperatively through wireless communication; the induction assembly comprises an exosmosis detection patch and a signal assembly; a stress induction layer is arranged in the exosmosis detection patch; a stress induction link is arranged in the stress induction layer; the stress induction link converts the change of skin tension into the change of electromagnetic signal feedback output. The exosmosis detection device provided by the application is convenient for remote operation of medical staff, and is suitable for exosmosis detection in various injection scenes.

This invention belongs to, but is not limited to, the field of intelligent accounting archive technology, and discloses an intelligent archiving method for accounting archives and a data verification and rollback control method. The method includes: dynamic QR code technology + barcode scanner / PDA + NLP image type recognition + RFID archive borrowing to achieve intelligent archiving; when a document is saved, a QR code is generated based on the relevant information of the document, and the corresponding metadata information is updated at different business nodes; sub-codes and master codes are used to verify data uniqueness; a communication protocol with the barcode scanner / PDA ensures data security; NLP identifies image types, and different types of attachments are verified in different ways; RFID facilitates quick retrieval when borrowing archives. This invention not only effectively improves the management efficiency of enterprises, but also brings positive impacts on energy conservation, environmental protection, and sustainable development. Through optimization of each link, by reducing paper and energy consumption, improving resource utilization efficiency, and enhancing the enterprise's risk resistance, a win-win situation of economic and environmental benefits is ultimately achieved.

A compact and lightweight half-face mask with an air supply valve includes a half-face mask, a spring-loaded exhalation valve, and a small air supply valve. The small air supply valve is installed in the middle interface of the half-face mask through the main housing of the air supply valve. An air supply valve stem is located inside the main housing. An opening at the bottom of the main housing allows the bottom end of the air supply valve stem to extend out. A rear cover is located on the upper part of the main housing. The small air supply valve includes a positive pressure on-demand air supply component, a switch component, a connecting connector, and a medium-pressure pipe. The top of the connecting connector is threaded to the bottom end of the air supply valve stem at the opening, and the bottom of the connecting connector is connected to the medium-pressure pipe. The switch component includes a switch spring located inside the main housing of the air supply valve. A switch sliding plane sealing frame is located on top of the switch spring. A switch diaphragm is located on top of the switch sliding plane sealing frame. A switch sealing seat is located on top of the switch diaphragm. A diaphragm base plate is located on top of the switch sealing seat. This device features high safety protection, economy, and portability, and eliminates the need for frequently replaced filter consumables.

This invention relates to the field of metallurgical technology, specifically to a method for effectively recovering metallic silicon from industrial silicon slag. The method involves first crushing the silicon slag, adding plasma water for slurry preparation, obtaining a silicon slag slurry, then adding a modifier, inhibitor, trapping agent, and frother to generate bubbles. The slurry is then refined using electromagnetic slag-forming in a medium-frequency induction furnace, and finally poured into a mold for cooling to obtain metallic silicon. The modifier is quicklime powder, the inhibitor and trapping agent are a mixture of various components, the frother is No. 4 flotation oil, the slag-forming agent is a mixture of base materials and auxiliary materials, and the gas is a mixture of argon, chlorine, and other gases. This method can solve the problems of high impurity and complex chemical composition in industrial silicon slag, improving the purity of the recovered metallic silicon.