7 results about "Silica glass" patented technology

The invention provides easily founded lithia-alumina-silica glass suitable for a low temperature type ion exchange process and chemical toughening. The lithia-alumina-silica glass comprises the following components in percentage by weight: 55 to 61.5 percent of SiO2, 5 to 13 percent of Al2O3, 13 to 20 percent of Na2O, 3.5 to 8 percent of K2O, 0 to 5 percent of ZnO, 0 to 8 percent of MgO, 0.5 to 5 percent of Li2O, and 0 to 1.5 percent of Sb2O. Through the reasonable setting of the components, the invention reduces the glass manufacturing difficulty, obviously decreases the glass founding temperature, and facilitates the energy consumption reduction and finished product yield improvement. Under the conditions of the toughening temperature of 380 to 500 DEG C and the toughening time of 4 to 12 hours, the surface bearing stress of the obtained glass reaches 340 to 700 MPa, the depth of the stressed layer reaches 20 to 60mu m, and the glass is reinforced and has high shock resistance.

The invention discloses a highly-ionized energy element sampling system of an inductively coupled plasma emission spectrometer. The sampling system comprises the inductively coupled plasma emission spectrometer, an ultrasonic atomization device I and an ultrasonic atomization device II, a solvent removal device, a hydrogenation reaction device and a gas-liquid separation device; each of the ultrasonic atomization device I and the ultrasonic atomization device II comprises an ultrasonic generator and an atomization chamber, wherein the ultrasonic generator is connected with the corresponding atomization chamber; the atomization chamber is composed of an atomization chamber main body and a sampling guide tube penetrating into the atomization chamber main body; the ultrasonic atomization device I and the ultrasonic atomization device II are connected with the inductively coupled plasma emission spectrometer through a quartz glass tube via the hydrogenation reaction device and the gas-liquid separation device; and the ultrasonic atomization device II is connected with the inductively coupled plasma emission spectrometer through a quartz glass tube via the solvent removal device. By virtue of the sampling system, the problem of low detection sensitivity of the inductively coupled plasma emission spectrometer on a highly-ionized energy element (mainly a hydrogenation element and a non-metallic element) can be solved.

The invention discloses a preparation technology for neodymium-doped quartz glass used for laser. According to the invention, a sol method and a titration spray method are combined, while a sol is prepared, hexahydrate neodymium chloride, hexahydrate aluminium chloride, nano titanium dioxide, hexahydrate yttrium chloride, silanol salt, an organic solvent and water are taken as raw materials, a doped component scope is characterized by comprising 0.5-1.2 mol% of Nd3+, 0.4-6 mol% of Al3+, 0-3 mol% of Ti4+, 0-0.8 mol% of Y3+, and the balance of Si4+, the doping time is short, the Nd3+ ion doped concentration in a quartz rod can reach as high as 0.8-3.5 wt%, and the doping uniformity can reach as high as 2*10-4 magnitude; an external diameter of the quartz rod can reach Phi 30*150 mm, a peak value emission cross section of the Nd3+ ion is greater than 1.5*10-20 cm<2>, the cost of a melting technology is low, the neodymium-doped quartz glass can substitute the current Nd3+ doped phosphate glass and YAG crystal and used for laser impact reinforcement equipment and laser fusion energy generating.

The invention provides a method and a device for recycling SiO2 powder from tail gas. The tail gas SiO2 powder recovery device comprises a double-channel flue, an electrostatic dust collection net, a vibration dust remover, a wind speed detector, a flue baffle and a SiO2 powder collection pool, siO2 powder in the tail gas is recycled through an electrostatic dust collection method, and high-purity SiO2 powder is obtained. The method for recycling the SiO2 powder from the tail gas comprises the following steps: recycling the high-purity SiO2 powder from the tail gas by utilizing the tail gas SiO2 powder recycling device, and then pressing and solidifying the high-purity SiO2 powder at high temperature to form a transparent quartz glass body. By collecting high-purity SiO2 powder in the tail gas, the utilization rate of a silicon raw material is increased; the dust content in the tail gas is reduced, and the tail gas treatment difficulty and treatment cost are reduced; and the quartz glass produced by using the high-purity SiO2 powder is excellent in quality.

The invention provides high-efficiency and high-precision quartz glass tube forming equipment, which comprises a press machine, a pressing column is arranged at the upper end of the press machine in a sliding mode, a base is installed at the lower end of the press machine, a mold is installed at the upper end of the base, a folding mechanism capable of improving precision and a transmission mechanism for recycling molten glass through thermal expansion and cold contraction are arranged on the inner side of the mold, a hydraulic pump is installed at the upper end of the press machine and matched with a pressing column, the pressing column and the mold are vertically and correspondingly arranged, a groove is formed in the lower end of the pressing column, the pressing column is vertically embedded into the mold, after molten glass enters the sleeve, due to the thermal expansion and cold contraction principle, an air bag is wholly expanded, the left side and the right side of the air bag are attached to the inner wall of a flow guide frame, the upper end and the lower end of the air bag expand and extend, the air bag can drive a push rod to slide downwards, the push rod drives a rotating disc to rotate, and when the rotating disc rotates, the molten glass is driven by a blade to enter a pipeline, so that the effect of promoting the rapid flowing of the molten glass is achieved.