How to Advanced technical indicators patent retrieval - Eureka

Nano crystallite composite filter material and supplement of manufacture method thereof

ActiveCN101417193ARich varietyConsider complexityFiltration separationHalloysiteBiological filter

The invention extends the connotation range required to be protected on the basis of a previously issued patent ZL200710025045.4, i.e., a nanometer microcrystalline composite filter material and a preparation method thereof, belonging to the field of a water disposal technique material. According to weight percentage, the nanometer microcrystalline composite filter material comprises 3-95 percent of attapulgite clay, 5-80 percent of sepiolite clay, 2-25 percent of kaolinite clay, 2-97 percent of tubular halloysite, 5-75 percent of diatomite, 5-75 percent of natural zeolite (clinoptilolite, mordenite and the like), 0-25 percent of pillared montmorillonite, 0-50 percent of expanded vermiculite, 0-5 percent of expanded perlite and 0-50 percent of active carbon or bamboo carbon powders. All raw materials which are powder shapes are mixed according to proportion and stirred to granulate by adding an inorganic adhesive, then sintered and activated at the temperature of 900-500 DEG C (inert gas is required for sintering and activating the filter material added with active carbon). The nanometer microcrystalline composite filter material has smooth shape, rough surface and uniform particle size, with the diameter of 1-10mm, and is used for biological filter tanks and high-class adsorption filter materials in deep purification systems of drinking water and reclaimed water sewage disposal systems.

Owner:傅成义

Manufacturing technology for high-speed and high-temperature precision deep groove ball bearing

InactiveCN103551811AHigh precisionQuality improvementBall bearingManufacturing technology

The invention discloses a manufacturing technology for a high-speed and high-temperature precision deep groove ball bearing. A complete set of bearing product is manufactured by processing a forge piece blank into a workpiece billet with an outer ring and an inner ring, then respectively performing technical processes of respective technologies of cold rolling, thermal treatment, coarse grinding, thermal stabilization, fine grinding, grinding and the like, performing inspection and then performing cleaning and assembling. In the cold rolling technique, a cold rolling machine tool is used, a main driving forming rolling wheel is used as an outer die of a mold, and a driven forming mandril is used as an inner die of the mold, so that the forming rolling wheel drives the workpiece billet to rotate, and a supporting wheel pushes the forming mandril to forwards feed and extrude the workpiece billet to roll and form a product; in the thermal stabilization technique, the workpiece subjected to coarse grinding is subjected to heat preservation in a tempering furnace at temperature of 400 DEG C for 4 hours and then is taken out for natural cooling. The limit rotating speed of the complete set of bearing is 12,000 r / min, and the limit working temperature is 160 DEG C; the working noise is less than or equal to 45 dB; the rated load is Cr41.2KN and Cor24KN. The manufacturing precision is high, and the matching performance is high.

Owner:山东鑫兴精密轴承科技有限公司

Firing system gradient combustion self-denitration technological method

ActiveCN108167860ALower concentration levelsGood for burnoutFuel supply regulationIndirect carbon-dioxide mitigationFlue gasEngineering

The invention relates to a firing system gradient combustion self-denitration technological method, and belongs to the technical field of cement industry flue gas denitration. According to the firingsystem gradient combustion self-denitration technological method, a gradient combustion environment with an extreme oxygen deficient area-oxygen deficient combustion area-oxygen enrichment burnout area is formed in a decomposing furnace; the gradient combustion environment is realized through classified feeding of decomposing furnace inlet fuel, tertiary air and decomposing furnace inlet materials; a furnace inlet tertiary air hose is divided into an upper branched pipe and a lower branched pipe, the tertiary air lower branched pipe is fed in from the lower portion of a decomposing furnace cylinder, and the upper branched pipe is fed in from the middle of the decomposing furnace cylinder; the decomposing furnace inlet fuel is divided into two layers and is further fed into the furnace, thelower layer of the fuel is fed in from a decomposing furnace cone, and the upper layer of the fuel is fed in from the decomposing furnace cylinder; the extreme oxygen deficient area refers to the decomposing furnace area located below the tertiary air lower branched pipe; the oxygen deficient combustion area refers to the area located between the tertiary air upper branched pipe and the tertiaryair lower branched pipe; and the oxygen enrichment burnout area refers to the decomposing furnace area located above the tertiary air upper branched pipe. The firing system gradient combustion self-denitration technological method has the advantages that the process is optimized, reliability is good and the flow path is reasonable.

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