A cleaning device for removing deposits in receptacles by way of blasting technology includes a cleaning lance with a grip-side and with a cleaning-side end section, on which a flexible container envelope forming a receiving space can be attached. The cleaning lance includes a feed tube with a container connection device that is arranged on the cleaning-side end section and is for feeding the explosive mixture or its starting components, to the container envelope, as well as a protective tube with a receiving space for a container envelope for the propose of shielding the container envelope to the outside. The protective tube is displaceably arranged along the longitudinal axis of the cleaning lance relative to the feed tube from a first position, in which the container envelope is shielded by the protective tube, into a second position in which the container envelope projects out through the protective tube.

This disclosure relates generally to a method and system for predicting safe time of operation for a rotary kiln. Over the period of time, the rotary kiln develops a ring within the inner walls of the kiln and suffers sudden shut down due to choking of the kiln. State-of-the-art methods provide the various methods of predicting safe time of operation, but the prediction is based on limited features and hence suffers accuracy. The disclosed method predicts safe time of operation for a rotary kiln based on mathematical model that estimates size of ring by estimating plurality of derived parameters based on operational parameters and design parameters. The derived parameters are the estimations provided by a solid bed height variation model, a gas stream model, a solid stream, a melt model, an agglomeration model, a volatile model, and a ring formation model.

An apparatus for manufacturing molten metal has a stationary electric furnace, a raw material charging chute, and exhaust duct and a secondary combustion burner in the furnace top, and a shock generator. The raw material charging chute is in one end of the furnace in a width direction and an electric heating region is spaced from the raw material charging chute in the width direction. A raw material layer having a sloping surface extends downward from the one end of the furnace having the raw material charging chute toward the electric heating region, the sloping surface supporting a metal agglomerate raw material layer. The shock generator is provided at least partially within the raw material and extends to the sloping surface, to be in contact with the metal agglomerate raw material layer, and to mechanically overcome hanging of the metal agglomerate raw material layer on the sloping surface.

An apparatus for manufacturing molten metal has a stationary electric furnace, a raw material charging chute, and exhaust duct and a secondary combustion burner in the furnace top, and a shock generator. The raw material charging chute is in one end of the furnace in a width direction and an electric heating region is spaced from the raw material charging chute in the width direction. A raw material layer having a sloping surface extends downward from the one end of the furnace having the raw material charging chute toward the electric heating region, the sloping surface supporting a metal agglomerate raw material layer. The shock generator is provided at least partially within the raw material and extends to the sloping surface, to be in contact with the metal agglomerate raw material layer, and to mechanically overcome hanging of the metal agglomerate raw material layer on the sloping surface.

A carburizing device includes a furnace body that performs heat treatment on a treatment object to perform carburization treatment on the treatment object, in which: a heater configured to perform heat treatment on the treatment object is provided upright in a vertical direction within the furnace body; a gas supply section configured to supply a gas for burnout toward the heater is provided at a lower end part of the heater; the heater is inserted through a protective tube provided upright in the vertical direction; and the gas supply section is configured to supply the gas for burnout to between the protective tube and the heater.

This slag-supplying container of an electric furnace for reduction processing of steel-making slag includes: a container body that causes hot steel-making slag to flow to the electric furnace; a slag discharging portion connected with an electric-furnace-side slag-supplying port; a slag receiving portion that receives the hot steel-making slag supplied; a lid that opens and closes the slag receiving portion; an exhausting portion that discharges exhaust gas from the electric furnace; and, a tilting unit that tilts the container body to adjust the amount of inflow of the hot steel-making slag to the electric-furnace-side slag-supplying port.

The present application discloses a method for purge clean of a low pressure furnace, comprising: step 1, providing a process chamber of the low pressure furnace in a standby state, wherein an inner wall thin film formed by a furnace deposition process is accumulated on the surface of an inner wall of the process chamber; step 2, performing temperature ramp-up or temperature ramp-down treatment on the process chamber to generate first thermal stress in the inner wall thin film, wherein thin film particles with poor adhesion in the inner wall thin film peels off; step 3, introducing a cleaning gas in a pulse manner to perform cycle purge clean on the process chamber, so as to remove the peeling thin film particles from the process chamber; and step 4, switching a state of the process chamber to the standby state after the cycle purge clean ends.

A melting furnace feedstock charger includes a charger conduit including an inlet to receive feedstock and an outlet at an outlet portion of the charger conduit to transmit feedstock, and an auger or other feedstock mover coupled to the charger conduit to convey feedstock in a direction from the inlet toward the outlet. A gate may be detachably coupled to the outlet portion of the charger conduit and configured to be coupled directly to a wall of a melting vessel. The auger may have a helical flight with an outer diameter of varying size. A stripper may be movably carried by the charger conduit and may include a stripping tool moved by an actuator with respect to the charger conduit to facilitate transmission of feedstock and/or to strip away clogged feedstock and/or molten material.

A melting furnace feedstock charger includes a charger conduit including an inlet to receive feedstock and an outlet at an outlet portion of the charger conduit to transmit feedstock, and an auger or other feedstock mover coupled to the charger conduit to convey feedstock in a direction from the inlet toward the outlet. A gate may be detachably coupled to the outlet portion of the charger conduit and configured to be coupled directly to a wall of a melting vessel. The auger may have a helical flight with an outer diameter of varying size. A stripper may be movably carried by the charger conduit and may include a stripping tool moved by an actuator with respect to the charger conduit to facilitate transmission of feedstock and/or to strip away clogged feedstock and/or molten material.

To provide a method of forming a positive electrode active material with high productivity. To provide a manufacturing apparatus capable of forming a positive electrode active material with high productivity. Provided is a method of forming a positive electrode active material including lithium, a transition metal, oxygen, and fluorine. An adhesion preventing step is performed during heating of an object. Examples of the adhesion preventing step include stirring by rotating a furnace during the heating, stirring by vibrating a container containing an object during the heating, and crushing performed between the plurality of heating steps. By these manufacturing methods, a positive electrode active material having favorable distribution of an additive at the surface portion can be formed.