885results about "Incrustation removal devices" patented technology

Aspects of the invention include a transfer chamber constructed inside of or next to a vessel used to retain and degas molten metal. The transfer chamber is in fluid communication with the vessel so molten metal from the vessel is pulled through the vessel by the pump as it is degassed. This helps maintain a generally constant flow of molten metal through the degassing vessel. Other aspects relate to a system and method for efficiently performing maintenance on components positioned in a vessel.

A furnace of controlled heating and treatment of material using infrared radiation. The furnace is capable of continuous infrared treating of material with consistent radiation being applied to the material, ease of access to the furnace for maintenance cleaning and repair, excellent control of radiant cooling of the material to be treated, and ease of maintenance of a volatile component condenser.

The invention concerns an alumnium melting method, which consists in introducing solid aluminium into a furnace (2), melting the aluminium to form an aluminium bath (4), detecting variations in carbon monoxide (CO) and / or hydrogen (H2) concentration and the temperature in the fumes (6) exiting from the furnace, deducing therefrom the formation of aluminium oxide at the surface of the alumnium bath (4), regulating the melting process on the basis of aluminium oxide formation. The invention also concerns a device for detecting and analyzing fumes exiting from the furnace and an aluminium melting furnace comprising said detecting device.

The invention discloses a method for removing salamander from a hearth roller of a roller-hearth non-oxidation furnace. In the method, the furnace temperature of the roller-hearth furnace is reduced to 500 DEG C in a non-blowout state, and the salamander on the hearth roller is removed by mutual friction between the lower surface of a furnace dragging plate and the hearth roller. The method comprises the following specific steps of: making a bottom groove and edges of the dragging plate into a herringbone structure; manufacturing two steel plates for connecting the dragging plate with a chain and ensuring that the chain is positioned on the central line of the dragging plate; putting the dragging plate on a centering platform for centering, connecting the dragging plate with the chain, putting into the furnace, and connecting a hoisting machine with the chain through a steel wire rope for dragging the furnace; and changing the connecting position of the steel wire rope and the chain after dragging for a certain distance to carry out a next-section furnace dragging process until the salamander is completely removed from the hearth roller of the roller-hearth non-oxidation furnace. The method is high-efficiency and convenient; the salamander on the hearth roller is removed under the non-blowout condition; the lower surface quality of the discharged steel plates is ensured; and energy and production cost are saved.

A process and a device for melting aluminum where solid aluminum is melted in a furnace to form aluminum melt pool. The temperature and carbon monoxide (CO) concentration of the flue gas generated in the melting process is detected and examined for variations. Using this variation information, it is determined if aluminum oxides have formed on the surface of the aluminum melt pool and if they have, the melting process is regulated accordingly.

The invention discloses a scum dredger, which comprises a machine frame, a power system and an execution system, wherein the power system and the execution system are arranged on the machine frame, and the machine frame is used for supporting the power system and the execution system; the execution system comprises a support arm and a scum dredging part for cleaning scum; the support arm is arranged on the machine frame in a mode of swinging up and down, is connected with the scum dredging part and is used for supporting the scum dredging part to drive the scum dredging part to move; the power system comprises an energy device for providing energy and a power device for driving the support arm to swing; the power device is connected with the energy device and the execution system; and the energy device provides energy for the power device, so that the support arm can swing up and down. By the structural design of the scum dredger, the scum can be dredged mechanically, so that the bodily injury of operators due to direct scum dredging is avoided. In addition, the scum is dredged by using the mechanical equipment, so that the labor intensity of the scum dredging of the operators is reduced, and the scum dredging efficiency is improved.

The invention relates to a method for alleviation of the nodulation degree of a furnace roller and aftertreatment of nodules of the furnace roller. The method is applicable to production of cold-rolled silicon steel and comprises the following steps: 1) strictly controlling the scale of a steel plate used as a hot rolling raw material; 2) controlling the heating temperature of a normalizing furnace; 3) controlling an oxidizing atmosphere; 4) controlling the temperature of a tapped steel plate; 5) controlling the sequence of production operations; 6) grinding the roller regularly; and 7) measuring the diameter of the furnace roller regularly and adjusting the number of revolution of the furnace roller which is changed in diameter after wearing. The method provided by the invention is optimized in process flow and process parameters, and different treatment measures are adopted according to the nodulation situation of the furnace roller, so the nodulation degree of the furnace roller canbe effectively alleviated, the rhythm of production is accelerated, the yield of cold rolled silicon steel is improved, and production cost is lowered.

The invention discloses a sagger automatic sweeping device for an electronic kiln automatic production line and belongs to the field of electronic kiln auxiliary facilities. The electronic kiln automatic production line comprises a pair of sagger conveying roller supporting beams and a pair of sagger conveying mechanisms. The sagger automatic sweeping device comprises a machine frame, a disc brush left-right moving mechanism, a disc brush up-down moving mechanism, a guiding track fixing box, a brush disc front-back moving mechanism, a sagger rotating brush dust removing mechanism, a disc brush rotating driving mechanism and a pair of sagger seizing mechanism. The machine frame is fixed with the sagger conveying roller supporting beams. The disc brush left-right moving mechanism is placed on one side of the upper portion of the machine frame. The disc brush up-down moving mechanism is matched with the disc brush left-right moving mechanism. The guiding track fixing box is connected with the disc brush up-down moving mechanism. A bearing base fixing plate is arranged in a guiding track fixing box cavity of the guiding track fixing box. The brush disc front-back moving mechanism is arranged on the guiding track fixing box. The sagger rotating brush dust removing mechanism is arranged on the bearing base fixing plate. The disc brush rotating driving mechanism is connected with the sagger rotating brush dust removing mechanism. The pair of sagger seizing mechanism is arranged on the pair of sagger conveying roller supporting beams. Labor intensity is lowered, cleaning efficiency is high, cleaning effect is ideal, all-direction sweeping without any dead angle is achieved, and the automatic effect of the whole is guaranteed.

A treating method of a furnace roller nodule comprises the following steps: (1), after a machine shuts down, a mark is made on band steel in the outlet position of a furnace, a furnace roller is rotated, and according to a furnace roller nodule marking ground on the band steel, the number of the furnace roller where the furnace roller nodule is generated and the transverse width position on the furnace roller are determined; (2), a new band steel transition roll is prepared and is an electrical steel band roll made of the same material, holes are formed in the new band steel transition roll, the hole diameter is in a range from 1.5 mm to 2.5 mm, and the hole edges are flush with the band steel, so that the holes are uniformly distributed in the overall width direction of a whole plate; (3), according to the nodule width position reflected on the band steel, the band steel provided with hole groups in corresponding widths is placed in the furnace roller position; (4), the band steel tension is removed, so that the band steel droops and forms a wrap angle with the furnace roller; and (5), the furnace roller rotates independently at a slow speed, so that the furnace roller rotates relative to the band steel, the furnace roller nodule is bulged out of the surface of the band steel when abraded on the holes in the surface of the band steel, and the furnace roller nodule is removed by the hole edges during rotating.

A stoking machine of an electric resistance furnace consists of a travelling mechanism, a panel (7), a turntable (8), a stoking mechanism, a hydraulic system and an operation system, wherein the stoking mechanism, the hydraulic system and the operation system are arranged on the panel (7), and the panel (7) is arranged on a turntable bracket (2) by the turntable (8). The stoking machine of the electric resistance furnace has the advantages that: firstly, the stoking machine can travel freely on a platform of the electric resistance furnace without any railways, and one stoking machine can be used on a plurality of furnace mouths; secondly, due to chain pins and a chain wheel, the stoking speed of a hollow stoking rod is increased by one time, and the force of impact is increased; and thirdly, as the complete machine is insulated, the stoking action can be carried out with the electric resistance furnace powered on.

A device for regulating and cleaning an air port (3) arranged in the wall (2) of a furnace, especially a soda house furnace, comprises a cleaning arrangement (1) and an arrangement (4) for regulating the air flow through the air port, in which an air casing (5) is arranged around the air port on the outer side of the furnace wall, in which a drum (12) is arranged inside the air casing and air-tightly connected to the wall of the air casing located opposite to the furnace wall. An opening defined by at least a cover member (14) of the regulating arrangement and at least one lateral wall of the drum is arranged with a restricted extension in the circumferential direction of the drum so as to achieve an air jet in towards and through the air port (3).

An apparatus and method for processing liquid slag and baghouse dust from a steelmaking furnace such as an EAF to recover valuable metals from the slag and dust includes a treatment vessel having a movable lower shell portion for receiving liquid slag and an upper shell portion that couples with the movable lower shell portion during heat activation of the treatment vessel. The slag is combined with silicon dioxide, a reducing agent, baghouse dust, and an inert gas before being heated to between approximately 1400° C. and 3000° C. The heat treatment results in a molten reduced iron and manganese metallic material, a treated slag layer, and an off-gas containing lead, zinc, and carbon monoxide. The off-gas is combusted, cooled, and solidified, resulting in lead oxide and zinc oxide. The slag layer is tapped, cooled, and solidified. The metallic layer is tapped for recycle in the steel making process.

A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.