4results about How to "Improve roasting effect" patented technology

The invention relates to the field of roasting furnace equipment, and particularly discloses a high-temperature roasting furnace for denitration catalyst preparation, the high-temperature roasting furnace comprises a furnace body, a base and a fixing rod, a baffle, a moving assembly and a placing assembly are arranged in the furnace body, the moving assembly can move along the fixing rod, the placing assembly comprises a placing frame, a limiting plate and a rotating shaft, and the placing frame comprises mesh plates arranged at the two ends; the limiting plate is detachably connected with the mesh plate, the rotating shaft is arranged on the mesh plate, the stirring assembly comprises a mounting ring and a plurality of stirring pieces, the mounting ring is arranged on the rotating shaft in a sleeving mode and used for driving the rotating shaft to rotate so that the placing frame can rotate, the stirring pieces are evenly distributed in the circumferential direction of the mounting ring, and the ends, away from the mounting ring, of the stirring pieces can make contact with the baffle. According to the high-temperature roasting furnace for preparing the denitration catalyst, during roasting, rotation of the furnace body, translation of the moving assembly and rotation of the placing frame are synchronously carried out, so that materials are uniformly heated during roasting, the roasting quality of the denitration catalyst is improved, and the yield of the denitration catalyst is increased.

The utility model belongs to the field of smelting, and particularly relates to a six-electrode ferroalloy submerged arc furnace which comprises a first electrode group, a second electrode group, a first transformer group and a second transformer group, the first electrode group comprises three first electrodes which are arranged in a triangular shape, the first transformer group comprises three first transformers, and every two first electrodes are connected through one first transformer; the second electrode group comprises three triangular second electrodes, the second transformer group comprises three second transformers, and every two second electrodes are connected through one second transformer; the first electrodes and the second electrodes are uniformly arranged at intervals around the same axis, and through the arrangement of the six electrodes, the diameters of the electrodes can be effectively reduced, and heating points are increased, so that a better heating effect is obtained.

This utility model discloses a combustion rack device with adjustable function, including a base, a roasting box, and a combustion chamber and a burner head disposed inside the roasting box, as well as nested fixing columns and fixing rods. The fixing columns and fixing rods are located at the corners of the base and the roasting box. A roasting box is disposed inside the roasting box, and removal plates are fixedly connected to the left and right sides of the upper end of the roasting box, respectively engaging with the left and right sides of the upper end of the roasting box. This combustion rack device with adjustable function facilitates appropriate adjustment of the height of the roasting box. During combustion, the cover plate engages with the upper end of the roasting box to prevent heat loss. Furthermore, combined with the removal plates fixed to the left and right sides of the upper end of the roasting box, the outer side of the upper end of the roasting box is located outside the roasting box. During cleaning, only the removal plates need to be pulled to remove the roasting box from the roasting box to clean the residue, without needing to reach into the roasting box for operation.

The invention relates to a static sintering process and system for preparing high-whiteness and high-purity aluminum hydroxide, and the static sintering process comprises the following steps: firstly, taking a raw material crushed to process control fineness as a pre-powder material, carrying out raw material preparation and blank forming on the pre-powder material to obtain a blank, sintering the blank to obtain clinker, carrying out clinker dissolution on the clinker to obtain slurry, and sintering the slurry to obtain the high-whiteness and high-purity aluminum hydroxide. Carrying out slurry desilication, carbon component reaction, hydrogen-aluminum separation and drying on the slurry to prepare high-whiteness and high-purity aluminum hydroxide; wherein the raw materials comprise solid wastes such as fly ash; the blanks are sintered into six polygon prism-shaped blanks which are stacked in two rows and three groups, the blanks are roasted in an industrial tunnel kiln in a temperature programming mode, and the roasting temperature ranges from 800 DEG C to 1100 DEG C. According to the invention, solid wastes such as fly ash, coal gangue, carbide slag and the like, pulverized coal and sodium carbonate are crushed into materials with the same fineness, high-whiteness and high-purity aluminum hydroxide can be obtained through an alkaline static sintering process, the recovery rate of aluminum in the solid wastes is about 90%, and harmless, resource and synergistic utilization of the solid wastes such as fly ash and the like is realized.