2results about How to "Reduce post-processing burden" patented technology

The invention relates to a method for preparing high-purity silicon tetrafluoride by dissociating fluosilicate through low-temperature plasma. The method comprises the following steps: crushing fluosilicate in a crusher, and heating and dewatering in a vibrated fluidized bed; the treated fluosilicate powder is conveyed to a plasma reactor through carrier gas to be dissociated to generate silicon tetrafluoride; and finally, silicon tetrafluoride generated by reaction enters a first-stage condenser to separate solid metal fluoride, then enters a cold hydrazine to be cooled for first-stage impurity removal, and then enters an adsorption tower for second-stage impurity removal, so that high-purity silicon tetrafluoride is obtained. The fluosilicate is dissociated by adopting a low-temperature plasma technology, so that high-purity silicon tetrafluoride is efficiently prepared under a low-temperature condition; meanwhile, the one-step method is short in conversion process, fluorine-containing waste is not generated, a simple purification step is combined, the production cost and the environment-friendly burden are reduced, the raw material adaptability is high, and operation is easy.

The utility model belongs to the technical field of extraction tank, concretely is a kind of spice extraction tank, including tank body, extraction mechanism and deslagging mechanism, the extraction mechanism is arranged in the inside of the tank body, the deslagging mechanism is arranged in the inside of the tank body and is connected with the extraction mechanism;The extraction mechanism includes the separation cylinder fixedly connected in the inside of the tank body, the inside of the separation cylinder is equipped with filter cylinder, the top of the tank body is fixedly connected with first motor, the output of first motor is connected with the rotating shaft extending to the inside of the tank body, the outside of the rotating shaft is fixedly connected with several groups of stirring piece.This spice extraction tank, by first helical shaft vertical transfer slag to second helical shaft, realize efficient deslagging, first helical shaft is connected with rotating shaft by magnetic coupling, rely on electromagnetic control to realize flexible start-stop, when deslagging, magnetic coupling drives first helical shaft to rotate by the driving force of first motor, and slag material is smoothly discharged from tank body.