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Method for recycling metal oxide from waste flue gas denitration catalyst

The invention discloses a method for recycling a metal oxide from a waste flue gas denitration catalyst, comprising the following steps of: crushing the waste flue gas denitration catalyst to carry out pre-roasting pretreatment at high temperature; adding Na2CO3 into the waste flue gas denitration catalyst according to the proportion, mixing, pulverizing and roasting at high temperature to obtain a sintering block; crushing the sintering block and putting the crushed sintering block into hot water, and stirring and lixiviating to obtain titanate; adding sulphuric acid into the titanate, filtering, water-washing and roasting to obtain TiO2; adding the sulphuric acid into the lixiviated filtering liquid to regulate a pH value to 8.0-9.0; adding excessive NH4Cl for vanadium precipitation; decomposing NH4VO3 obtained from filtering at high temperature to prepare a V2O5 product; adding hydrochloric acid into the filtering liquid subjected to the vanadium precipitation to regulate a pH value to 4.5-5.0; adding CaCl2 for molybdenum and tungsten precipitation; treating the CaM0O4 and CaWO4, obtained from filtering, with the hydrochloric acid and roasting to obtain MoO3 and WO3. The method of the invention has the advantages of simple process and apparatus, high recycling efficiency, good product technical data, large treatment capacity and the like.
Owner:HUADIAN ELECTRIC POWER SCI INST CO LTD

System and method for verification of identity

A system for verifying identities comprising an enrollment system having: (i) at least one alphanumeric input device; (ii) at least one biometric input device; (iii) at least one header file database having a plurality of identities; (iv) at least one search engine, said search engine in communication with said header file database such that said search engine first receives an alphanumeric data signal which has been input into said alphanumeric input device by the user, and then searches said database for identities that match the alphanumeric data according to a predetermined first set of criteria; (v) a processor to score the set of identities matched by said search engine according to a predetermined second set of criteria, said processor capable of determining the acceptability or unacceptability of said user's input alphanumeric data based on said score; and (vi) an identity escrow database which is in communication with said processor and receives from said unit an approved identity data signal based on the acceptability of the score, said escrow database additionally in communication with said biometric input device capable of receiving at least one biometric identity data signal input by the user to said biometric input device, said escrow database further comprising means for coupling the approved identity data signal and the biometric identity data signal to create at least one subfile within the escrow database for each user comprising the approved identity data signal and the biometric data signal. The present invention further comprises a verification system for verifying the identity of said user after the user has enrolled in the enrollment system. The verification system has means for processing a second input biometric data signal input by the user to the biometric input device to match the user's preexisting biometric data in said escrow database according to a predetermined third set of criteria. The verification system has an output device for transmitting to a third party whether or not a match was located within said escrow database for said user. The present invention further relates to a method and system for providing a warranty against the theft of a user's identity.
Owner:ELLINGSON JOHN F

Receiving part for receiving a rod for coupling the rod to a bone anchoring element, bone anchoring device, method and tool for assembling the same

A receiving part for receiving a rod for coupling the rod to a bone anchoring element includes a receiving part body with a first end and a second end; a rod receiving portion with a channel for receiving a rod, and a head receiving portion for accommodating a head of a bone anchoring element, the head receiving portion having an open end at the second end of the receiving part body and being flexible so as to allow introduction and clamping of the head; and a locking ring configured to be positioned around the head receiving portion, wherein the locking ring can assume a first position with respect to the receiving part body in which the locking ring is latched to the receiving part body in a position where the head receiving portion is expandable to facilitate insertion of a head of a bone anchoring element, and wherein the locking ring can assume a second position with respect to the receiving part body in which the locking ring is latched to the receiving part body in a position where the locking ring compresses the head receiving portion, such that when a bone anchoring element has a head inserted in the head receiving portion, the bone anchoring element is held adjustably at a first angular position relative to the receiving part. A method for assembling a bone anchoring device includes inserting the head of the bone anchoring element into the receiving part body; and moving the locking ring and the receiving part body relative to each other until the locking ring assumes the second position with respect to the receiving part body.
Owner:BIEDERMANN TECH GMBH & CO KG

Automated radioisotope seed loader system for implant needles

An automated system for loading low dose radioisotope seeds into a plurality of implant needles is comprised of a loading station into which a replaceable cartridge may be positioned. The cartridge is preloaded with a plurality of radioisotope seeds and a plurality of spacers. The cartridge has at least one aperture and preferably the radioisotope seeds and spacers are loaded around the periphery of a rotatable drum within the cartridge. The loading station has a cartridge receiving structure and an automated motion control system. When the cartridge is positioned in the cartridge receiving structure, the automated motion control system preferably drives a pair of stepper motors within the cartridge, one for rotating the rotatable drum and one for sliding a pushrod to selectively eject radioisotope seeds and spacers from the cartridge into each of a plurality of implant needles positioned so as to receive the radioisotopes seeds and spacers within the implant needle. In one embodiment, the implant needles are positioned tip first into the loading station, and once a predetermined arrangement of radioisotope seeds and spacers are loaded into the implant needle, a plug is positioned in the tip of the implant needle. Preferably, the automated system includes a computer processor having a touch screen user interface that is connected to and directs the operation of the automated motion control system to load the plurality of implant needles in accordance with a predetermined dose plan.
Owner:THERAGENICS CORP

River surge silt harmless and recycling treatment method

The invention provides a river surge silt d harmless and recycling treatment method. In the method, a dredger is utilized to suck silt, the silt is sent into a biochemical treatment pond from the ship through a silt transmission pipeline, compound enzyme is utilized to carry out bioremediation, gravels and sands with the particle size bigger than 1mm are filtered out by a primary hydrocyclone and a vibration screen, sands with the particle size of 0.075-1mm are filtered out by a secondary hydrocyclone and the vibration screen, powdery particles with the particle size of 0.025-0.075mm are filtered out by a third-level hydrocyclone and the vibration screen, powder particles are further separated out from outlet silt tail water through a sediment tower, sewage from the sediment tower is filtered by utilizing a fiber filter after flocculant is added into the sewage, and powdery particles are deposited from backflushing silt after being filtered by utilizing the sediment tower again, and the powdery particles are dehydrated by the third-level hydrocyclone and the vibration screen after entering a sludge pool and are cured by a curing agent after dehydration. The method has high resource utilization ratio, meets the requirements for the environmental protection, particularly carries out stage treatment on the silt, lowers the cost and enhances the efficiency.
Owner:GUANGZHOU BAOMINGLAI ENVIRONMENT SCI & TECH
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