CN218566129U - Oxygen-enriched sintering roller kiln - Google Patents

Abstract

The utility model provides an oxygen boosting sintering roller kiln belongs to lithium cell roller kiln field, the on-line screen storage device comprises a base, the kiln body, the roll table, drive arrangement, sealed gate, pressure device, the feeding area, the ejection of compact district, the atmosphere air-supply line, the kiln body is installed on the base, the roll table is installed in the kiln body, the internal preheating section that divide into in proper order of kiln, the constant temperature section, the cooling zone, sealed gate goes up and down to be installed in the sealing zone of preheating section both sides and constant temperature section both sides, pressure device installs at kiln top and preheating section and constant temperature section intercommunication, can seal the kiln body through sealed gate, provide the pressure sintering environment to preheating section and constant temperature section through pressure device, the pressure sintering makes and is accepted high temperature and pressure simultaneously by the sintered body, remove the combination that promotes ternary anode material and the densification of material by heat energy and stress, let the product after the sintering compact, thereby improve ternary anode material performance, prevent that the sintering goods from taking place warpage.

Description

Oxygen-enriched sintering roller kiln

Technical Field

The utility model belongs to lithium cell roller kilns field, concretely relates to oxygen boosting sintering roller kilns.

Background

The ternary cathode material refers to lithium nickel cobalt manganese oxide, integrates the advantages of three lithium ion battery cathode materials of LiCoO, liNiO and LiMnO, and is the fastest growing cathode material in the lithium battery cathode material market in the years. At present, roller kilns are more and more widely applied to the field of sintering preparation of ternary cathode materials, but the sintering capacity of products and the performance of the sintered products are still to be improved.

The utility model discloses a chinese utility model CN209181504U discloses a high temperature roller kiln for lithium cell anode material, including the kiln body, the internal roll table that is equipped with of kiln, roll table are connected with feeding replacement room and ejection of compact replacement room, and the roll table is connected with drive arrangement, and the external mounting of kiln has the shell, and the kiln is internal to be divided into heating area, thermostatic zone, cooling area, the heating area links to each other with feeding replacement room, and cooling area links to each other with ejection of compact replacement room, and the thermostatic zone is located between heating area and the cooling area, installs atmosphere air-supply line on the shell, lower atmosphere air-supply line, exhaust fan, and the upper surface in the outside of shell is equipped with the exhaust pipe, and the roll table in heating area and thermostatic zone is equipped with the heating rod, and the cooling area's roll table is equipped with the heat transfer tuber pipe from top to bottom, is equipped with the jacket cooling air intake between the shell of cooling area department and the roll table, can provide even sintering atmosphere, and the heating area, the bigger length distribution scope in thermostatic zone and cooling area makes the setting of temperature and defeated material more be fit for lithium cell electrode material continuous sintering production.

However, the high-temperature roller kiln for the lithium battery anode material only provides an oxygen-enriched sintering environment, the kiln body cannot hermetically control the pressure in the sintering process, the pressure sintering cannot be carried out, and the sintered product is not compact enough, so that the performance of the ternary anode material is not excellent enough.

Disclosure of Invention

In order to overcome the problem among the background art, the utility model provides an oxygen boosting sintering roller way kiln can seal and provide the pressure sintering environment to the kiln body, solves the problem of the unable pressure sintering of high temperature roller way kiln for the positive electrode material of current lithium cell.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides an oxygen boosting sintering roll table kiln, the on-line screen storage device comprises a base, the kiln body, the roll table, drive arrangement, sealed gate, pressure device, the feeding area, the ejection of compact district, the atmosphere air-supply line, the kiln body is installed on the base, the kiln body sets up the observation window, the roll table is installed and is connected with the drive arrangement who installs outside the kiln body in the kiln body, divide into preheating section, thermostatic zone, cooling zone in proper order in the kiln body, preheating section import is connected with the feeding area, the cooling zone export is connected with ejection of compact district, the roller table at preheating section and thermostatic zone both ends is provided with the interval and forms the sealing area, sealed gate goes up and down to install in the sealing area of preheating section both sides and thermostatic zone both sides, sealed gate top is connected with hydraulic pressure elevating gear, hydraulic pressure elevating gear installs at kiln body top, pressure device installs at kiln body top and preheating section and thermostatic zone intercommunication, the air outlet of atmosphere air-supply line sets up the kiln body both sides of roll table top and below respectively, kiln body both ends are provided with exhaust device, install heating device in preheating section and the thermostatic zone, the roll table tuber pipe is installed to the upper and lower side in the cooling zone.

Furthermore, a pressure release valve is arranged on the kiln body and connected with the preheating section and the constant temperature section.

Furthermore, a sealing layer is arranged around the sealing gate.

Furthermore, valves are arranged at the air outlet of the atmosphere air inlet pipe and the air inlet of the air exhaust device in the preheating section and the constant temperature section.

Furthermore, the hydraulic lifting device is hermetically installed with the kiln body.

Further, the heating device is a heating rod or an igniter.

Further, the exhaust device is an exhaust fan.

The utility model has the advantages that:

the utility model discloses a sealed gate can seal the kiln body, provide the pressurization sintering environment to preheating section and thermostatic zone through pressure device, solve the problem of the unable pressurization sintering of high temperature roller kiln for the positive electrode material of current lithium cell, the pressurization sintering makes and is accepted high temperature and pressure by the sintered body simultaneously, remove the densification that promotes the combination of ternary positive electrode material and material by heat energy and stress, let the result after the sintering compact to improve ternary positive electrode material performance, prevent that the sintered products from taking place warpage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.

The utility model discloses an oxygen boosting sintering roller way kiln, refer to fig. 1-2, an oxygen boosting sintering roller way kiln, including base 1, the kiln body 2, the roll table 3, drive arrangement 4, sealed gate 5, pressure device 6, feeding area 7, ejection of compact district 8, atmosphere air-supply line 9, the kiln body 2 is installed on base 1, roll table 3 is installed in the kiln body 2 and is connected with the drive arrangement 4 of installing outside the kiln body 2, divide into preheating section 21 in the kiln body 2 in proper order, thermostatic section 22, cooling zone 23, preheating section 21 import is connected with feeding area 7, cooling zone 23 export is connected with ejection of compact district 8, preheating section 21 is provided with interval formation sealing zone 31 with the roll table 3 at thermostatic section 22 and thermostatic section both ends, sealed gate 5 goes up and down to be installed in the sealing zone 31 of preheating section 21 both sides and thermostatic section 22 both sides, sealed gate 5 top is connected with hydraulic pressure elevating gear 51, hydraulic pressure elevating gear 51 installs at the top of the kiln body 2, pressure device 6 installs at the top and preheats section 21 and preheating section 22 and air-supply line 22 intercommunication, the air-supply line 21 air-supply line 22 sets up and air-supply line 20 in the air-supply line 3 below the air outlet of atmosphere respectively, kiln body 2, the heating section 20 and 20 heat-exchange devices are installed in the heating section 2 side of the heating section of the thermostatic section below the kiln body 2.

The sintering ternary positive electrode material is placed in a sagger special for sintering, the sagger is placed on a roller way 3 of a feeding area 7, a driving device 4 is started to enable the roller way 3 to operate, the ternary positive electrode material is conveyed into a kiln body 2, meanwhile, an oxygen atmosphere is provided for a preheating section 21 and a constant temperature section 22 through an atmosphere air inlet pipe 9, the atmosphere after reaction is exhausted through an exhaust device 10, the ternary positive electrode material is guaranteed to have a good oxygen-enriched atmosphere in the sintering process, the ternary positive electrode material in the sagger sequentially passes through the preheating section 21, the constant temperature section 22 and a cooling section 23, when passing through the preheating section 21 and the constant temperature section 22, the ternary positive electrode material can be observed through an observation window on the kiln body 2 during sintering, two working sections are respectively sealed through a sealing gate 5 according to the sintering requirement of the ternary positive electrode material, pressurization is carried out through a pressurizing device 6, the combination of the ternary positive electrode material and densification of the ternary positive electrode material are promoted through heat energy and stress, after the pressurization sintering is completed, the sealing gate 5 is opened through a hydraulic lifting device 51, the ternary positive electrode material in the next working section under the transportation of the roller way, and the sagger enters a next working section after the cooling device, the ternary positive electrode material is cooled, and the ternary positive electrode material can finally, the ternary positive electrode material can be cooled to reach a discharging area 8 after the ternary heat exchange area.

Referring to fig. 1-2, a pressure release valve 30 is arranged on the kiln body 2 and connected with the preheating section 21 and the constant temperature section 22, so that normal pressurization is ensured, and overhigh pressure of the kiln body 2 is avoided.

Referring to fig. 1-2, the sealing layer is arranged around the sealing gate 5 to ensure the tightness of the pressure sintering.

Referring to fig. 1-2, valves are disposed at the air outlet of the atmosphere air inlet pipe 9 and the air inlet of the air exhaust device 10 in the preheating section 21 and the constant temperature section 22 to ensure the tightness of the pressure sintering.

Referring to fig. 1-2, the hydraulic lifting device 51 is hermetically mounted with the kiln body 2 to ensure the sealing performance of the kiln body 2.

Referring to fig. 1-2, the thermal device 24 is a heating rod or igniter that heats the kiln body 2.

Referring to fig. 1-2, the exhaust device 10 is an exhaust fan capable of exhausting the atmosphere after the reaction.

The working process comprises the following steps:

the sagger filled with the ternary anode material is placed on a roller way 3 of a feeding area 7, the roller way 3 conveys the ternary anode material into a kiln body 2, an atmosphere air inlet pipe 9 provides oxygen atmosphere for a preheating section 21 and a constant temperature section 22, the ternary anode material in the sagger sequentially passes through the preheating section 21, the constant temperature section 22 and a cooling section 23 for sintering and cooling, when passing through the preheating section 21 and the constant temperature section 22, the preheating section 21 and the constant temperature section 22 are respectively sealed through a sealing gate 5, pressurization is carried out through a pressurizing device 6, the sagger is introduced into the cooling section 23 for heat exchange and cooling after the pressurization and sintering is finished, and the cooled ternary anode material finally reaches a discharging area 8.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims (7)

1. An oxygen enrichment sintering roller kiln is characterized in that: the oxygen-enriched sintering roller kiln comprises a base (1), a kiln body (2), roller ways (3), a driving device (4), a sealing gate (5), a pressurizing device (6), a feeding area (7), a discharging area (8), an atmosphere air inlet pipe (9), the kiln body (2) is installed on the base (1), the roller ways (3) are installed in the kiln body (2) and connected with the driving device (4) installed outside the kiln body (2), the kiln body (2) is internally and sequentially divided into a preheating section (21), a constant temperature section (22) and a cooling section (23), the inlet of the preheating section (21) is connected with the feeding area (7), the outlet of the cooling section (23) is connected with the discharging area (8), the preheating section (21) is provided with interval forming sealing areas (31) with the constant temperature section (22) and the roller ways (3) at two ends of the constant temperature section (22) and the constant temperature section, the sealing gate (5) is installed in the sealing areas (31) at two sides of the preheating section (21) and the two sides of the constant temperature section (22), the top of the preheating section (21) and the constant temperature section (22) is connected with a hydraulic lifting device (51), the hydraulic lifting device (51) is installed at the top of the kiln body (2), the kiln body (2) and the pressurizing device (9), the air inlet pipe (21) are respectively connected with the top of the constant temperature section (21), and the pressurizing device (9), and the air outlet pipe (21) 2) Two sides, two ends of the kiln body (2) are provided with air exhaust devices (10), a preheating section (21) and a constant temperature section (22) are internally provided with heating devices (24), and heat exchange air pipes (20) are arranged above and below the roller way (3) in the cooling section (23).

2. An oxygen-enriched sintering roller kiln according to claim 1, characterized in that: the kiln body (2) is provided with a pressure release valve (30) connected with the preheating section (21) and the constant temperature section (22).

3. An oxygen-enriched sintering roller kiln according to claim 1, characterized in that: and a sealing layer is arranged around the sealing gate (5).

4. An oxygen-enriched sintering roller kiln according to claim 1, characterized in that: valves are arranged at the air outlet of the atmosphere air inlet pipe (9) and the air inlet of the air exhaust device (10) in the preheating section (21) and the constant temperature section (22).

5. An oxygen-enriched sintering roller kiln according to claim 1, characterized in that: the hydraulic lifting device (51) is hermetically installed with the kiln body (2).

6. An oxygen-enriched sintering roller kiln according to claim 1, characterized in that: the thermal device (24) is a heater rod or an igniter.

7. An oxygen-enriched sintering roller kiln according to claim 1, characterized in that: the exhaust device (10) is an exhaust fan.

Images