52results about "Halogen/halogen-acids" patented technology

The invention discloses an overflow port structure of an ultra-white rolled glass melting furnace in the technical field of glass melting furnaces. The overflow port structure comprises a branch passage, the overflow port is formed in one side of the tail end of the branch passage; the outlet arch is arranged above the overflow port; the first electric boosting piece is arranged at the bottom of the tail end of the branch path and is used for preventing the molten glass from crystallizing; the second electric boosting pieces are arranged on the overflow port pool walls on the two sides of the overflow port and are used for reducing the transverse temperature difference of the molten glass. According to the invention, an electric boosting mode is adopted, and the molten glass at the tail end of the branch path is integrally heated through the first electric boosting piece, so that the temperature of the molten glass at the tail end of the branch path can be increased, and a crystallization phenomenon is prevented; and the second electric fluxing piece is used for locally heating the glass liquid in the overflow port, so that the transverse temperature difference of the glass liquid in the overflow port is reduced, and the uniformity and the glass quality of the glass liquid are improved.

[Problem] To provide a gob feeding device capable of predicting gob quality defects. [Solution] A gob feeding device 1 comprises: a cooling device 26 that sprays a coolant at an upper funnel 22; a gob timing sensor 34A that detects a gob timing, which is the timing at which a gob G falls from each of a plurality of passage members 25 into a corresponding blank mold 5, and a gob length, which is the vertical length of the gob at said timing; a glass temperature sensor 36 that detects the temperature of molten glass in a forehearth 2; and a gob monitoring device 37 that monitors the state of gobs falling from the plurality of passage members into corresponding blank molds. The gob monitoring device infers the state of a gob on the basis of at least the gob timing, the gob length, and the temperature of the molten glass in the forehearth, and reports the state of the gob.

The present disclosure relates to the technical field of glass production. Disclosed are a calendering molding device and a glass production line. The calendering molding device comprises a rack, and a glass melt flow channel, a conveying hopper and a calendering roller pair that are arranged on the rack. The conveying hopper extends in the horizontal direction and is provided with a feeding port and a discharging port opposite to each other; the feeding port is in communication with the glass melt flow channel, the calendering roller pair has a roller pair gap, and the roller pair gap is arranged in a discharging direction of the discharging port. The conveying hopper is configured to convey a glass melt flowing out of the glass melt flow channel to the roller pair gap in the horizontal direction, and the calendering roller pair is configured to perform calendering molding on the glass melt to form a glass ribbon. The calendering molding device provided by the present disclosure can improve the uniformity of the flow rate of the glass melt, ensuring the uniform thickness of the calendering-molded glass ribbon, improving product quality.

The present disclosure relates to the technical field of glass production. Disclosed are a hopper mechanism and a glass product production device. The hopper mechanism comprises a housing and a discharging hopper, the discharging hopper being arranged in the housing. The bottom of the housing is provided with a clearance opening. The discharging hopper is provided with a discharging nozzle, the discharging nozzle comprising a heat preservation section and an exposed section which are connected to each other, the heat preservation section being arranged in the clearance opening, the exposed section extending out of the clearance opening, and the height range of the exposed section being 20 mm to 50 mm. Compared with the prior art, the hopper mechanism provided by the present disclosure uses the heat preservation section arranged in the clearance opening and the exposed section extending out of the clearance opening, so that the hopper mechanism can effectively avoid the risk of sticking onto rollers during rolling processes and fold mark defects after rolling, thereby ensuring the forming quality of glass.

Provided are an apparatus and method for rapid cooling of a high temperature gas. The apparatus includes one or more cylindrical housings (001) connected to one another, a jacket (002) on an outer side of a housing, an inner cylinder (003) disposed at least in an interior of a first cylindrical housing, a heat insulation gasket (005), inner members (006), a corrosive high temperature gas inlet (N01) disposed on the heat insulation gasket (005), a gas and liquid phase outlet (N02) disposed at a bottom of the housing or a bottom of a last housing and a coolant inlet and outlet (N03-N05) connected to an interior of the jacket (002). The heat insulation gasket (005) seals the first cylindrical housing (001) and a top of the inner cylinder (003) in the interior of the first cylindrical housing (001). The inner members (005) are distributed along a wall of the housing (001), communicate an interior of the jacket (002) with an interior of the housing (001), and distribute a liquid in the interior of the jacket (002) to the interior of the housing (001). The method replaces a filter and a cooler and effectively reduces a risk of blockage when a solid-containing gas is cooled.

It is provided a process for extracting nickel sulfate from mining ores, such as serpentine, comprising the steps of conducting a magnetic separation of the mining ores producing a magnetic fraction and a non magnetic fraction; leaching the non magnetic fraction with HCI producing a slurry comprising metals chloride; filtrating the slurry producing a metals chloride liquor; purifying the metals chloride liquor producing a magnesium chloride solution; separating an iron-nickel cake from the magnesium chloride solution; leaching the cake together with the magnetic fraction producing a metallic sulfate solution; extracting nickel and cobalt from the metallic sulfate solution by a ion exchange resin extraction and stripping producing an inorganic stripped phase; submitting the inorganic stripped phase to a liquid-liquid extraction producing a nickel concentrated phase; and evaporating and drying the nickel concentrated phase to recuperate nickel sulfate.

The utility model provides a gas pre-decomposer for a high-temperature purification furnace, and belongs to the technical field of high-temperature industrial electric furnaces. The problem that an existing gas pre-decomposition device for the high-temperature purification furnace is low in decomposition efficiency is solved. Comprising a shell, a graphite crucible is arranged in the shell, the outer side of the graphite crucible is coated with a heat preservation layer, an induction coil is wound on the outer side of the shell, a filter element is arranged in the graphite crucible, an air inlet is formed in one end of the shell, an air outlet is formed in the other end of the shell, and thermocouples are arranged on the two sides of the air inlet respectively. The thermocouple penetrates through the heat preservation layer and then is inserted into the filter element, a blocking screen assembly is arranged at the front end of an air channel of the air outlet, and cooling systems are further arranged at the two ends of the shell respectively. According to the utility model, the halogen gas required by the high-temperature purification furnace can be obtained by decomposing the five-poison cheap raw material gas.

The utility model relates to the technical field of foam glass production, and provides a high-temperature block melting furnace for foam glass production, which comprises a support base, a support shaft rod rotatably connected to one end of the top of the support base, a support plate fixedly connected to one side of the support shaft rod, and a guide assembly arranged in the middle of the inner side of the support base. The guiding assembly is used for driving the supporting plate to turn over, the top end of the supporting plate is fixedly connected with a frit furnace body, the bottom end and the top end in the frit furnace body are provided with a heating cavity and a material carrying cavity correspondingly, a heating system is arranged in the material carrying cavity, and a furnace cover body is arranged at the top end of the frit furnace body. A discharging assembly is arranged at the end, close to the supporting shaft rod, of the frit furnace body. By means of the technical scheme, the problems that in the prior art, materials in a molten state are difficult to lead out rapidly, the overall production efficiency is greatly affected, and in the discharging process, temperature difference is likely to exist between the discharging pipeline and the furnace cavity, and consequently the materials are likely to be attached to the discharging pipeline are solved.

A method of recycling one or more valuable metal elements from a source material comprising the one or more valuable metal elements, the method comprising: forming an acidic aqueous recycling feed by acid leaching the source material or a derivative thereof, the acidic aqueous recycling feed comprising the one or more valuable metal elements and iron in solution; contacting the acidic aqueous recycling feed with a solid phase extractant material which adsorbs the iron, the one or more valuable metal elements remaining in solution; recovering the one or more valuable metal elements from the acidic aqueous recycling feed via one or more further process steps selected from solvent extraction, solid phase extraction, electrochemical extraction, and precipitation processes; and recovering the iron from the solid phase extractant material by contacting the solid phase extractant material with a stripping agent comprising a solution of organic chelating molecules which form a complex with the iron.

A method for isolating astatine, comprising the steps of: (a) contacting a composition comprising astatine and bismuth with nitric acid to form a first solution comprising astatine, bismuth, and nitric acid, (b) contacting a resin with the first solution to separate the astatine from the first solution and partition it onto the resin, and (c) eluting the astatine from the resin. The astatine-containing composition is a compound of formula AtO + X ‐ (X ‐ is a counter ion).

This invention discloses a channel structure and manufacturing method for extending the lifespan of substrate glass, belonging to the field of substrate glass manufacturing technology. By providing a filling layer between the platinum channel body and the innermost refractory material, and by providing filling layers between adjacent refractory material layers and pre-reserving expansion gaps between adjacent refractory components, the uniformity and density of the gap filling between the platinum channel body and the refractory material are ensured. This ensures the consistency of high-temperature sintering of the filling powder, effectively reduces the interface gap between the platinum body and the filling powder, inhibits platinum oxidation and volatilization, and contributes to extending the service life of the platinum channel body. Furthermore, by pre-setting compatible filling layers between different layers of refractory material, the deformation stress caused by the difference in thermal expansion coefficients of different layers of refractory material during heating can be buffered, ensuring the structural integrity of the refractory material covering system surrounding the platinum channel body, avoiding cracking problems caused by asynchronous thermal expansion of the refractory materials, and further extending the overall service life of the channel.

The application relates to the technical field of glass processing, and discloses an energy-saving and environment-friendly glass processing furnace, which comprises a three-section article moving mechanism and a rotary material pouring mechanism, is internally provided with a No. 2 rotating shaft which is installed directly above the three-section track and can rotate, a driving wheel which rotates with the No. 2 rotating shaft and can drive the driven wheel to rotate, a driving motor which is fixedly installed on one side of the No. 2 rotating shaft and can drive the No. 2 rotating shaft to rotate, and a friction driving disc which can control the linkage torque between the driving motor and the No. 2 rotating shaft. The energy-saving and environment-friendly glass processing furnace can automatically take out the heating crucible from the inside of the furnace body heat preservation outer cylinder and pour out the glass solution. Since the purpose is achieved by controlling the driving motor throughout the process, the safety hidden danger in the material taking and pouring process is reduced.

The utility model discloses a molten glass discharge device of a glass kiln, which relates to the technical field of glass kilns and comprises a liquid storage tank, a support rod fixedly connected to the outside of the liquid storage tank, a bottom plate fixedly connected to the bottom of the support rod, a receiving box fixedly connected to the upper side of the bottom plate, and a liquid outlet hole formed in the bottom of the liquid storage tank. Clamping plates are fixedly connected to the bottom of the liquid storage box, a sealing plate is slidably connected between the two clamping plates, a stretching mechanism is fixedly installed on one side of the liquid storage box, a reset mechanism is installed on the other side of the liquid storage box, and a sliding sleeve is slidably connected to the upper side of the containing and receiving box. According to the device, through cooperation of the driving motor and the rotating rod, automatic and accurate control over discharging of molten glass is achieved, by means of the linkage design of the sealing plate and the sliding sleeve, the molten glass is effectively prevented from splashing out, operation safety is guaranteed, meanwhile, the opening degree of the liquid outlet hole can be adjusted according to needs, the sliding sleeve is synchronously pulled up for protection, and the production efficiency is improved. And automatic resetting is achieved after discharging is completed, and the production efficiency and flexibility are improved.

The application provides a wet membrane evaporation cooling system for humidity control of a platinum channel kiln, which comprises a wet membrane treatment module, a water supply regulation module, a heat energy recovery module, a sensing detection module, a control module and an airflow conveying module; the sensing detection module is in communication connection with the control module; the control module is in communication connection with the wet membrane treatment module, the water supply regulation module, the heat energy recovery module and the airflow conveying module respectively; and the water supply regulation module is in pipeline connection with the wet membrane treatment module. The application replaces traditional decentralized control by establishing the core logic of intelligent decision and module linkage of the sensing detection and control module, realizes full-process automation of humidity regulation and control, and guarantees response timeliness from the structure; the integrated design of the wet membrane treatment module, the heat energy recovery module and the water supply regulation module solves the functional limitation of a single module, realizes the integration of humidification, energy saving and water quality protection, and reduces system energy consumption and maintenance cost.

The utility model discloses a tank furnace high-temperature molten glass discharging device, which relates to the technical field of molten glass discharging devices and comprises a secondary beam supporting steel structure fixedly mounted on the ground of a third floor, a high-temperature tank furnace is fixedly mounted at the upper end of the secondary beam supporting steel structure, and a tank furnace throat pipe is arranged at the side end of the high-temperature tank furnace. A tank bottom plugging assembly is fixedly installed at the bottom of the high-temperature tank furnace, a discharging assembly is arranged below the tank bottom plugging assembly and comprises a discharging hopper fixedly installed on the ground of the third floor, and a stainless steel discharging pipe is fixedly connected to an outlet in the lower end of the discharging hopper. An outlet of the stainless steel discharge pipe extends to a material receiving box on the first floor of the plant; the high-pressure water gun is matched with the semi-annular cooling water spraying pipe to form a multi-layer cooling system, the annular water spraying pipe is responsible for primary cooling of an inlet area, the high-pressure water gun extends along the pipeline to cover the inlet area, and the whole-course temperature control and crushing effect is ensured.

By means of a device for compressing a gas stream, comprising: at least one feed line (2) feeding a gas stream comprising at least one gaseous compound to a compressor unit (4), and at least one discharge line (3) for discharging the compressed gas stream from the compressor unit; a compressor unit (4) comprising at least one first compressor stage (1) and one final compressor stage (F) wherein the feed pipe (2) is in fluid communication with the gas inlet of the first compressor stage (1) and the gas outlet of the first compressor stage (1) is in fluid communication with the gas inlet of the last cooling device (WA00F), and the gas outlet of the last cooling device (WA00F) is in fluid communication with the gas inlet of the final compressor stage (F) and the discharge line (3) is in fluid communication with the gas outlet of the final compressor stage (F); at least one first bypass (6a) connecting the exhaust line (3) to a fluid connection between the last cooling device (WA00F) and an immediately preceding compressor stage, in which the exhaust line (3) is connected by means of a first flow regulator (5a) located in the first bypass (6a) and comprising at least one valve (10), the amount of gas carried in the bypass gas flow can be controlled and thus the through-flow of the gas flow through the final compressor stage (F) can be adjusted; at least one second bypass (6b) provided with a second flow regulator (5b), in which the bypass connects the fluid connection between the last cooling device (WA00F) and the final compressor stage (F) to the feed line (2), and by means of a corresponding method which can be carried out using this device, the cooling device (WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, compressor stall of the compressor unit (4) can be better coordinated with individual compressor stages, and condensation of the returned compressed gas stream can be avoided. The final compressed gas stream produced by the method provides a compressed hot gas that can be used to integrate heat into the process steps after compression.

The utility model discloses an energy-saving production device for refining and deoxidizing liquid chlorine, which belongs to the technical field of liquid chlorine refining and comprises a chlorine heating device, a chlorine and liquid chlorine hedging and impurity removing device, a chlorine liquefying device and a liquid chlorine circulating device. The chlorine heating device is used for conveying high-temperature chlorine into the chlorine liquid chlorine hedging and impurity removing device through a pipeline; the liquid chlorine circulating device is used for continuously conveying liquid chlorine into the chlorine and liquid chlorine hedging and impurity removing device through a pipeline; in the chlorine and liquid chlorine hedging and impurity removing device, liquid chlorine absorbs high-temperature chlorine to be vaporized and then completes countercurrent hedging with continuously conveyed liquid chlorine, impurities in the liquid chlorine are taken away, and the liquid chlorine subjected to impurity removal is conveyed to a user side through a pipeline. The liquid chlorine refining and deoxidizing energy-saving production device can effectively solve the problems that in the prior art, heat of high-temperature chlorine at an outlet of a chlorine compressor is not effectively utilized in the liquid chlorine refining process, and sensible heat of the high-temperature chlorine is wasted; in the refining process, steam needs to be additionally introduced as a heat source, and the steam consumption is large.

The invention discloses a surface overflow structure of a high borosilicate glass melting furnace in the technical field of floating glass production equipment. The surface overflow structure comprises a molten glass inlet brick, a molten glass discharging brick, a muffle channel, an external thermal insulation accessory and an overflow discharging top cover, an overflow groove is formed in the glass liquid inlet brick; the molten glass discharging brick is arranged on the outlet side of the overflow groove, and a discharging opening is formed in the molten glass discharging brick; the overflow discharging top cover is arranged right above the molten glass inlet brick and the molten glass discharging brick, and the muffle channel is arranged above the overflow discharging top cover; the external thermal insulation accessory is arranged on the outer side of the muffle channel and the glass liquid discharging brick; the muffle channel comprises an outer lining body and an inner heating element, a heating cavity is formed in the outer lining body, and the inner heating element is arranged in the heating cavity and used for heating the overflow discharging top cover. According to the invention, a thermal insulation mode is adopted, so that temperature drop of molten glass is effectively reduced, smooth emptying of surface overflow is realized, and damage to emptying bricks caused by a flame heating method is avoided.

The invention discloses a photovoltaic glass sample melting furnace and a use method thereof, and belongs to the technical field of sample melting furnaces. A photovoltaic glass sample melting furnace comprises a sample melting furnace body, a bearing frame used for supporting the sample melting furnace body, a heating bottom plate arranged at the bottom of the sample melting furnace body and a heating device used for heating glass raw materials in the sample melting furnace body, and a center shaft which is arranged on the bearing frame in a running fit mode and installed on the sample melting furnace body. The heating bottom plate can rotate relative to the heating device around the central line of the central shaft; and a collecting tank is arranged at the bearing frame. According to the photovoltaic glass sample melting furnace and the using method thereof, the lower end face of the slag feeding transverse plate is immersed into molten glass, the height of the upper end face of the slag feeding transverse plate is slightly larger than that of the molten glass, the sunken stock bin is arranged in a sunken mode towards the lower side, and the slag feeding transverse plate can move in the direction parallel to the collecting pool under driving of the slag scraping driving mechanism; in the moving process, the scum can be collected.

By means of a device for compressing gas of a gas stream, comprising: at least one supply line (2) for a gas stream containing at least one gaseous compound to a compressor unit (4), and at least one discharge line (3) for discharging the compressed gas stream from said compressor unit; said compressor unit (4), comprising at least one first compressor stage (1) and a final compressor stage (F), wherein the supply line (2) is fluidically connected to the gas inlet of the first compressor stage (1) and the gas outlet of the first compressor stage (1) is fluidically connected to the gas inlet of a last cooling device (WA00F), and the gas outlet of the last cooling device (WA00F) is fluidically connected to the gas inlet of the final compressor stage (F), and the discharge line (3) is fluidically connected to the gas outlet of the final compressor stage (F); at least one first bypass (6a), which connects the discharge line (3) to the fluid connection located between the last cooling device (WA00F) and the compressor stage immediately before it, wherein by means of a first through-flow regulator (5a) which is located in the first bypass (6a) and comprises at least one valve (10), the gas amount conducted in the bypass gas stream can be controlled and as a result the through-flow of the gas stream through the final compressor stage (F) can be regulated; at least one second bypass (6b) provided with a second through-flow regulator (5b), wherein said bypass connects the fluid connection located between the last cooling device (WA00F) and the final compressor stage (F) to the supply line (2), and by means of a corresponding method that can be carried out using this device, the compressor stall of the compressor unit (4) can be better coordinated to the individual compressor stages and condensation of the returned, compressed gas stream can be avoided. The finally compressed gas stream produced by the method provides a compressed, hot gas that can be used to integrate heat into process steps following compression.

The present disclosure provides a hopper mechanism and a glass product manufacturing apparatus, belonging to the technical field of glass manufacturing. The hopper mechanism includes a housing and a material discharge hopper, the material discharge hopper is installed within the housing, and a relief port is provided at the bottom of the housing. The material discharge hopper is equipped with a material discharge nozzle, the material discharge nozzle including an insulating segment and an exposed segment connected to each other, the insulating segment installed within the relief port, and the exposed segment installed to protrude from the relief port, the exposed segment being 20 millimeters to 50 millimeters high. Compared to the prior art, the hopper mechanism of the present disclosure includes an insulating segment installed within the relief port and an exposed segment protruding from the relief port, thereby effectively preventing adhesion to rolls during rolling and overlapping defects after rolling is completed, thereby ensuring the forming quality of the glass.

Systems and methods for automated separation and recovery of compounds from solution are disclosed herein. In some embodiments, the system can use a pump in fluid / air communication with a chromatography column to dissolve and recover astatine from a solution containing astatine, bismuth, and nitric acid. The system can be in communication with a controller that can automate and / or remotely signal each component of the system to execute the recovery without manual user inputs.

The utility model discloses a cooling device of a kiln lip brick and a glass kiln, and relates to the technical field of glass production, the cooling device of the kiln lip brick comprises a gas supply pipe group and a spray gun, nitrogen is arranged in the gas supply pipe group, and the gas supply pipe group is arranged on one side of a runner; one end of the spray gun communicates with an air outlet of the air supply pipe set, and the end, away from the air supply pipe set, of the spray gun is used for cooling cracks of the lip tiles; according to the technical scheme provided by the utility model, the cooling nitrogen sprayed by the spray gun is used for freezing leaked glass liquid so as to block cracks of the lip brick, and meanwhile, the temperature below the lip brick is reduced, so that the effects of cooling and protecting the lip brick are achieved, and the service life of the lip brick is prolonged.

The invention relates to the field of electronic-grade chlorine production, and particularly discloses an electronic-grade chlorine production and purification system and a production process thereof.The electronic-grade chlorine production and purification system comprises a raw material dehydration unit, a light component removal unit and a product refining unit, and the raw material dehydration unit comprises a first heat exchanger, a first condenser, a first reboiler and a first rectifying tower. Moisture and nitrogen trichloride in raw materials are removed through rectification operation of the first rectification tower, corrosion of wet chlorine to follow-up equipment is prevented, metal ion pollution is introduced, materials extracted from the tower top then enter the second rectification tower, and low-boiling-point impurities such as carbon dioxide are separated and removed through boiling point difference; liquid chlorine in the tower kettle of the second rectifying tower enters a third rectifying tower, high-boiling-point heavy components such as metal chlorides are further removed, a high-purity electronic-grade chlorine product is finally extracted from the tower top, heavy components discharged from the tower kettle of the third rectifying tower need to be regularly fed into waste liquid for treatment, and the whole process adopts a sequence of pre-dehydration, light component removal and heavy component removal; the work division is clear; and the equipment is effectively protected.

The present disclosure relates to the field of hydrocarbon raw material conversion, in particular to a method for converting hydrocarbon raw materials and a device thereof. The method comprises the following steps: 1) reacting a gaseous hydrocarbon raw material with a halogen to produce a haloalkane and a hydrogen halide; 2) reacting the haloalkane provided in step 1) with an active metal to produce a first unsaturated hydrocarbon and a first metal halide; and 3) reacting the hydrogen halide provided in step 1) with an active metal to produce a second metal halide and hydrogen. In an electrochemical system of the present disclosure, hydrocarbon raw materials can be converted into high-value products such as hydrogen, ethylene, acetylene, propylene, graphite, etc.

This provides a rapid and more effective method for recovering At. [Solution] A method for isolating astatine, comprising the steps of (a) contacting a composition containing astatine and bismuth with nitric acid to form a first solution containing astatine, bismuth, and nitric acid; (b) contacting a resin with the first solution to separate the astatine from the first solution and distribute it to the resin; and (c) eluting the astatine from the resin. The composition containing astatine may have the formula AtO+X- (where X- is a counterion).

The invention relates to a system and method for reducing the amount of carbon dioxide contained in a gas stream. The system includes a carbon dioxide absorption and mineralization module configured to convert carbon dioxide, ammoniation solvent, and at least one metal chloride in a gas stream to carbonate and / or bicarbonate and ammonium chloride. The system also includes a mineral separation module configured to separate carbonate and / or bicarbonate from ammonium chloride. Also provided is a solvent regeneration module configured to convert ammonium chloride to chlorine and ammonium hydroxide through a catalyst under the action of heat and oxygen.

An effective system and method for reducing the amount of carbon dioxide contained in a gas stream. The carbon dioxide absorption and mineralization unit is configured to produce at least one of carbonate and bicarbonate and ammonium chloride from carbon dioxide, an ammoniated solvent, and at least one metal chloride in the gas stream. The mineral separation unit is configured to separate carbonates and bicarbonates from ammonium chloride. The solvent regeneration unit is configured to use a catalyst to produce chlorine and ammonium hydroxide from ammonium chloride, heat, and oxygen.

The invention relates to a glass curing and discharging method and device. The method comprises the steps that a tank opening of a discharging tank is aligned with a discharging opening of a discharging valve at the bottom of a smelting furnace; glass and to-be-treated materials are heated through a smelting furnace to be smelted into a molten mass, and the molten mass intermittently flows out of a discharging opening in the bottom of the smelting furnace and enters a discharging tank below the smelting furnace; in the operation that a tank opening of a discharging tank is aligned with a discharging opening in the bottom of a smelting furnace, the tank opening and the discharging opening are connected through a surrounding cover, and a material pipe in tight butt joint with the tank opening is arranged in the surrounding cover; and the molten mass flows out of a discharge port in the bottom of the smelting furnace and then enters a discharge tank below the material pipe through the interior of the material pipe. Through the safety redundancy design, under the condition that radioactive glass molten mass overflows, the material pipe can contain and seal radioactive overflowed substances, so that the safety of discharging operation is guaranteed, and the convenience of radioactive substance disposal after an accident can be obviously improved.