CN213273754U

CN213273754U - Sintering kiln capable of improving performance of zirconium oxide powder prepared by coprecipitation method

Info

Publication number: CN213273754U
Application number: CN202022418499.1U
Authority: CN
Inventors: 李月峰; 胡法卿; 范宇升
Original assignee: Zhejiang Jinkun Zirconium Industry Co ltd
Current assignee: Zhejiang Jinkun Zirconium Industry Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-05-25
Anticipated expiration: 2030-10-27

Abstract

The sintering kiln comprises a kiln body, wherein a certain number of silicon carbide rods are transversely distributed on the upper side and the lower side of the front middle part of the kiln body, a certain number of holes are formed in the upper side of the middle part of the kiln body, corresponding smoke exhaust devices of a heating area are respectively arranged above the kiln body, each smoke exhaust device of the heating area comprises a high-temperature-resistant air pressure sensor and an air volume adjusting valve, and a chimney is respectively arranged at the top of each smoke exhaust device of the heating area. The utility model discloses increase kiln top exhaust duct to adjust the amount of wind through the governing valve, the chloride ion that will volatilize gets rid of furnace, and the residual of chloride ion in the reducible powder makes the product mechanical strength of follow-up manufacturing promote to some extent, also reduces relatively the infringement to the kiln, saves kiln cost of maintenance.

Description

Sintering kiln capable of improving performance of zirconium oxide powder prepared by coprecipitation method

Technical Field

The utility model relates to a sintering kiln technical field especially relates to a can improve sintering kiln of coprecipitation method zirconia powder performance.

Background

When the zirconium hydroxide filter cake synthesized by the coprecipitation method is calcined in the existing sintering kiln, chloride ions and the like can be volatilized, and the chloride ions are retained in a hearth to influence the performance of powder, so that the kiln can be corroded to influence the overall structure of the kiln.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of above-mentioned current device, provide a can improve sintering kiln of coprecipitation method zirconia powder performance, the utility model discloses increase kiln top exhaust duct to adjust the amount of wind through the governing valve, the chloridion that will volatilize gets rid of furnace, and chloridion remains in the reducible powder, makes the product mechanical strength of follow-up manufacturing promote to some extent, also reduces relatively the infringement of kiln, saves kiln cost of maintenance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the sintering kiln comprises a kiln body, wherein a certain number of silicon carbide rods are transversely distributed on the upper side and the lower side of the front middle part of the kiln body, a certain number of holes are formed in the upper side of the middle part of the kiln body, corresponding smoke exhaust devices of a heating area are respectively arranged above the kiln body, each smoke exhaust device of the heating area comprises a high-temperature-resistant air pressure sensor and an air volume adjusting valve, and a chimney is respectively arranged at the top of each smoke exhaust device of the heating area. The front middle part of the kiln body is a temperature rising area, the kiln body heats and calcines the filter cake through a silicon carbide rod after being started, the filter cake volatilizes gas with chloride ions at high temperature, a high-temperature resistant air pressure sensor of the smoke exhaust device of the temperature rising area detects air pressure change, different opening and closing adjustments are carried out on the air volume adjusting valve through feedback data so as to achieve a proper air flow environment, the gas in the kiln body is discharged through a chimney, and the stability of the temperature in the kiln body is not greatly influenced.

Preferably, the upper side of the front part of the kiln main body is provided with a certain number of holes, a corresponding main water-discharging pipe is arranged above the kiln main body, and a water-discharging chimney is arranged at the top of the main water-discharging pipe. At the initial stage of temperature rise, the water in the filter cake is evaporated at high temperature, and the water vapor-containing gas is mainly discharged by the water vapor discharging main pipe and the water vapor discharging chimney.

Preferably, a plurality of holes are formed in the upper side of the rear portion of the kiln main body, a corresponding heat exhaust gas main pipe is arranged above the kiln main body, and a heat exhaust gas chimney is arranged at the top of the heat exhaust gas main pipe. The rear part of the kiln main body is a cooling area, and high-temperature gas is discharged through a heat exhaust gas main pipe and a heat exhaust gas chimney, so that the temperature of a filter cake is reduced.

The beneficial effects of the utility model reside in that: 1. the utility model increases the exhaust duct above the kiln, and regulates the air quantity through the regulating valve, and the volatilized chloride ions are discharged from the hearth, so that the residual chloride ions in the powder can be reduced, and the mechanical strength of the subsequently manufactured product is improved to some extent, such as crushing strength and bending strength; 2. the furnace brick and the saggar can be corroded by chloride ions at high temperature, the damage of the reduction of the chloride ions to the furnace brick and the saggar of the carrier is relatively reduced, the service life is prolonged, and the maintenance cost of the furnace is saved.

Drawings

Fig. 1 is a top view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is an enlarged view at B in fig. 2.

The main elements in the figures are symbolically illustrated: 1. a kiln body; 2. a silicon carbide rod; 3. a smoke exhaust device of the heating area; 3.1, a high-temperature resistant air pressure sensor; 3.2, an air volume adjusting valve; 4. a chimney; 5. a main water-vapor discharge pipe; 6. a water vapor discharge chimney; 7. a heat exhaust gas main pipe; 8. a chimney for exhausting hot gas.

Detailed Description

The invention will be further explained by means of the following description and the attached drawings.

The implementation mode is as follows: as shown in fig. 1-2, a sintering kiln capable of improving performance of zirconium oxide powder by a coprecipitation method comprises a kiln main body 1, wherein the kiln main body 1 is divided into a heating area at the front middle part and a cooling area at the rear part, a certain number of silicon carbide rods 2 are transversely distributed on the upper side and the lower side of the front middle part, a certain number of holes are arranged on the upper side of the middle part of the kiln main body 1, and a smoke exhaust device 3 and a chimney 4 corresponding to the heating area are respectively arranged above the kiln main body 1. Referring to fig. 3, the smoke exhaust device 3 of the heating area comprises a high temperature resistant air pressure sensor 3.1 and an air volume adjusting valve 3.2, and a chimney 4 is respectively arranged at the top of each smoke exhaust device 3 of the heating area.

Referring to fig. 1-2, a certain number of holes are formed in the upper side of the front portion of the kiln main body 1, a corresponding main water vapor discharge pipe 5 is arranged above the kiln main body 1, and a water vapor discharge chimney 6 is arranged at the top of the main water vapor discharge pipe 5.

Referring to fig. 1-2, a plurality of holes are arranged on the upper side of the rear part of the kiln main body 1, a corresponding heat exhaust gas main pipe 7 is arranged above the kiln main body 1, and a heat exhaust gas chimney 8 is arranged on the top of the heat exhaust gas main pipe 7.

The above description is only the specific embodiments of the present invention, but the structural features of the present invention are not limited thereto, the present invention can be used in similar products, and any person skilled in the art is in the field of the present invention, and all the changes or modifications made are covered by the claims of the present invention.

Claims

1. The utility model provides a can improve sintering kiln of coprecipitation method zirconia powder performance, includes kiln main part (1), its characterized in that: the kiln comprises a kiln body (1), wherein a certain number of silicon carbide rods (2) are transversely distributed on the upper side and the lower side of the front middle part of the kiln body (1), a certain number of holes are formed in the upper side of the middle part of the kiln body (1), corresponding smoke exhaust devices (3) of a heating area are arranged above the kiln body (1) respectively, each smoke exhaust device (3) of the heating area comprises a high-temperature-resistant air pressure sensor (3.1) and an air quantity regulating valve (3.2), and a chimney (4) is arranged at the top of each smoke exhaust device (3).

2. The sintering kiln capable of improving the performance of the zirconium oxide powder obtained by the coprecipitation method according to claim 1, wherein: the kiln comprises a kiln body (1), and is characterized in that holes of a certain number are formed in the upper side of the front portion of the kiln body (1), a corresponding water and steam discharging main pipe (5) is arranged above the kiln body (1), and a water and steam discharging chimney (6) is arranged at the top of the water and steam discharging main pipe (5).

3. The sintering kiln capable of improving the performance of the zirconium oxide powder obtained by the coprecipitation method according to claim 1 or 2, wherein: the kiln comprises a kiln body (1), wherein a plurality of holes are formed in the upper side of the rear portion of the kiln body (1), a corresponding heat exhaust gas main pipe (7) is arranged above the kiln body (1), and a heat exhaust gas chimney (8) is arranged at the top of the heat exhaust gas main pipe (7).