Continuous gas-fired lithium ore roasting kiln production line

Abstract

The utility model discloses a continuous gas roasting lithium ore kiln production line which comprises a roasting furnace, a centralized control center, a dust removal system and a skip car, the roasting furnace comprises a drying furnace section, a roasting furnace section and an independent cooling section, and the continuous gas roasting lithium ore kiln production line feeds lithium ore materials into the roasting furnace through the skip car. Lithium ore materials are dried and roasted through the drying furnace section and the roasting furnace section, then the lithium ore materials are conveyed into the independent cooling section through a skip car to be cooled, and meanwhile dust removal treatment is conducted in the process that the lithium ore materials are dried, roasted and cooled through a dust removal system in the roasting furnace; according to the continuous gas roasting lithium ore kiln production line, the roasting furnace is matched with the combustion system, the temperature control system and the electric control system for use, full-automatic control over the heating speed, the temperature rising speed and all mechanical actions is achieved, the maneuverability of the continuous gas roasting lithium ore kiln production line is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ore material production, in particular to a continuous gas-fired lithium ore roasting kiln production line. Background Art

[0002] Lithium is an active metal, very soft, and can spontaneously combust in oxygen and air. Lithium is also an important energy metal. Its application in high-energy lithium batteries and controlled thermonuclear reactions makes lithium an important raw material for solving the long-term energy supply of mankind. The development of the lithium industry is closely related to the development of the military industry. In the 1950s, the lithium industry developed rapidly because the development of hydrogen bombs required the extraction of the isotope 6Li for nuclear fusion, and lithium became an important raw material for the production of hydrogen bombs, neutron bombs, and proton bombs. Lithium compounds are also widely used in the glass and ceramic industry, aluminum smelting industry, lithium-based grease, as well as air conditioning, medicine, organic synthesis and other industries. Lithium series products are widely used in smelting, refrigeration, atomic energy, aerospace, ceramics, glass, grease, rubber, welding, medicine, batteries and other industries.

[0003] The basic principle of lithium ore tunnel kiln roasting is to use the high temperature atmosphere of the tunnel kiln and the pyrolysis reaction of the material on the moving bed to volatilize and enrich the lithium element in the lithium ore. During the roasting process, the lithium ore exchanges heat with the high temperature airflow, so that the moisture, volatile substances and part of the lithium element are taken away. The remaining mineral part undergoes pyrolysis reaction, so that the lithium element is enriched in the material in the form of soluble salt.

[0004] The length of a traditional kiln is about 200 meters, with an additional 60-meter drying kiln and a 100-meter cooling kiln. It occupies a large area, has poor maneuverability, and consumes a lot of energy. Therefore, we propose a continuous gas-fired lithium ore roasting kiln production line to solve the above problems. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model discloses a continuous gas-fired lithium ore roasting kiln production line, which adopts the technical scheme of comprising a roasting furnace, a centralized control center, a dust removal system and a material cart. The roasting furnace comprises a drying furnace section, a roasting furnace section and an independent cooling section. The roasting furnace consists of a furnace body frame, a material cart, a furnace door, a combustion system, a furnace front operation box, an electrical control system, a temperature control system and a smoke exhaust waste heat recovery system. A furnace lining is arranged inside the furnace body frame, and a material cart propulsion mechanism is arranged inside the material cart. The furnace doors are arranged at both ends of the furnace body frame and are installed in cooperation with the furnace body frame through a furnace door lifting mechanism. The furnace door is sealed and installed in cooperation with the furnace lining through a side sealing device. The furnace body frame is welded with high-quality steel sections and steel plates, and is pulled between columns and between column tops with angle steels to form a complete grid structure. The furnace door consists of a steel structure shell and a full-fiber lining.

[0006] As an optimal technical solution of the utility model, the material cart includes a gas furnace inlet transfer cart, a gas furnace outlet transfer cart, a cooling furnace outlet transfer cart, a drying cart, a heating cart and a cooling cart. The drying cart is arranged inside the drying furnace section, the heating cart is arranged inside the roasting furnace section, and the cooling cart is arranged inside the independent cooling section.

[0007] As a preferred technical solution of the utility model, the exhaust waste heat recovery system includes a chimney and a waste heat recovery pipe. The chimney is evenly installed on the top of the outer wall of the furnace body frame and the chimney is respectively connected to the drying furnace section and the roasting furnace section. The waste heat recovery pipe is respectively connected to the drying furnace section and the independent cooling section.

[0008] As a preferred technical solution of the utility model, the chimney is provided with a rainproof cap, a lightning rod and a separate grounding body.

[0009] As a preferred technical solution of the present invention, the dust removal system is a bag dust collector.

[0010] The beneficial effects of the utility model are as follows: the utility model delivers the lithium ore material into the interior of the roasting furnace by means of a material cart, and completes the drying and roasting of the lithium ore material through the drying furnace section and the roasting furnace section, and then delivers the lithium ore material to the interior of the independent cooling section for cooling by the material cart, and at the same time, performs dust removal in the process of drying, roasting and cooling the lithium ore material in the roasting furnace by means of the dust removal system, and realizes full automatic control of heating, heating speed and all mechanical actions by coordinating the roasting furnace with the combustion system, temperature control and electronic control system, thereby improving the maneuverability of the continuous gas-fired lithium ore roasting kiln production line and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is the structural diagram of the roasting production line of the utility model;

[0014] Figure 3 This is a flowchart of the roasting production line of the utility model;

[0015] Figure 4 This is a structural block diagram of the roasting furnace of the utility model.

[0016] In the figure: 1 roasting furnace, 2 centralized control center, 3 dust removal system, 4 drying furnace section, 5 roasting furnace section, 6 independent cooling section, 7 gas furnace inlet transfer vehicle, 8 drying vehicle, 9 heating vehicle, 10 gas furnace outlet transfer vehicle, 11 cooling vehicle, 12 cooling furnace outlet transfer vehicle, 13 furnace body frame, 14 furnace lining, 15 material vehicle, 16 material vehicle propulsion mechanism, 17 furnace door, 18 furnace door lifting mechanism, 19 side sealing device, 20 combustion system, 21 furnace front operation box, 22 electrical control system, 23 temperature control system, 24 exhaust gas waste heat recovery system. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1

[0019] like Figures 1 to 4 As shown, the utility model discloses a continuous gas-fired lithium ore roasting kiln production line, which adopts the technical scheme of comprising a roasting furnace 1, a centralized control center 2, a dust removal system 3 and a charge car 15, the roasting furnace 1 comprising a drying furnace section 4, a roasting furnace section 5 and an independent cooling section 6, the roasting furnace 1 is composed of a furnace body frame 13, a charge car 15, a furnace door 17, a combustion system 20, a furnace front operation box 21, an electrical control system 22, a temperature control system 23 and a smoke exhaust waste heat recovery system 24, a furnace lining 14 is arranged inside the furnace body frame 13, a charge car propulsion mechanism 16 is arranged in the charge car 15, and furnace doors 17 are arranged at both ends of the furnace body frame 13 and the furnace doors 17 are lifted by the furnace door The lowering mechanism 18 is installed in cooperation with the furnace body frame 13, and the furnace door 17 is sealed and installed in cooperation with the furnace lining 14 through the side sealing device 19. The furnace body frame 13 is welded with high-quality steel and steel plates, and the columns and column tops are pulled with angle steel to form a complete grid structure. The furnace door 17 is composed of a steel structure shell and a full fiber lining. The lithium ore material is sent into the interior of the roasting furnace 1 through the material car 15, and the lithium ore material is dried and roasted through the drying furnace section 4 and the roasting furnace section 5. After that, the lithium ore material is sent to the interior of the independent cooling section 6 for cooling through the material car. At the same time, the dust removal system 3 is used to remove dust during the drying, roasting and cooling of the lithium ore material in the roasting furnace 1.

[0020] As a preferred technical solution of the utility model, the material cart 15 includes a gas furnace inlet transfer cart 7, a gas furnace outlet transfer cart 10, a cooling furnace outlet transfer cart 12, a drying cart 8, a heating cart 9 and a cooling cart 11. The drying cart 8 is arranged inside the drying furnace section 4, the heating cart 9 is arranged inside the roasting furnace section 5, and the cooling cart 11 is arranged inside the independent cooling section 6. The material cart 15 and the material cart propulsion mechanism 16 can drive the lithium ore material to be continuously produced inside the roasting furnace production line.

[0021] As a preferred technical solution of the utility model, the exhaust waste heat recovery system 24 includes a chimney and a waste heat recovery pipe. The chimney is evenly installed on the top of the outer wall of the furnace body frame 13 and the chimney is connected to the drying furnace section 4 and the roasting furnace section 5 respectively. The waste heat recovery pipe is connected to the drying furnace section 4 and the independent cooling section 6 respectively. The flue gas inside the drying furnace section 4 and the roasting furnace section 5 can be discharged to the outside of the roasting furnace 1 through the chimney, and the heat inside the independent cooling section 6 can be recovered to the inside of the roasting furnace section 5 through the waste heat recovery pipe, thereby achieving the purpose of energy saving.

[0022] As a preferred technical solution of the utility model, the chimney is provided with a rainproof cap, a lightning rod and a separate grounding body, and the working safety of the roasting furnace 1 can be improved by the rainproof cap, the lightning rod and the separate grounding body.

[0023] As a preferred technical solution of the present invention, the dust removal system 3 is a bag dust collector. The dust removal system 3 which is a bag dust collector can filter and remove dust from the dust-containing gas inside the roasting furnace 1 to complete the purification and cleaning of the gas.

[0024] The working principle of the utility model is as follows: the lithium ore material is sent into the interior of the roasting furnace 1 by the material cart 15, and the drying and roasting of the lithium ore material are completed through the drying furnace section 4 and the roasting furnace section 5, and then the lithium ore material is sent to the interior of the independent cooling section 6 for cooling by the material cart, and at the same time, the dust removal system 3 is used to perform dust removal during the process of drying, roasting and cooling the lithium ore material in the roasting furnace 1, so as to realize the continuous production of drying, roasting and cooling of the lithium ore material.

[0025] The circuit connection involved in the utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to the widely used existing technology.

[0026] Components not described in detail herein are prior art.

[0027] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A continuous gas-fired lithium ore roasting kiln production line, comprising a roasting furnace (1), a centralized control center (2), a dust removal system (3) and a material car (15), characterized in that: The roasting furnace (1) comprises a drying furnace section (4), a roasting furnace section (5) and an independent cooling section (6). The roasting furnace (1) is composed of a furnace frame (13), a material cart (15), a furnace door (17), a combustion system (20), a furnace front operation box (21), an electrical control system (22), a temperature control system (23) and a flue gas waste heat recovery system (24). A furnace lining (14) is arranged inside the furnace frame (13), a material cart propulsion mechanism (16) is arranged inside the material cart (15), the furnace door (17) is arranged at both ends of the furnace frame (13) and the furnace door (17) is installed in cooperation with the furnace frame (13) through a furnace door lifting mechanism (18), and the furnace door (17) is installed in cooperation with the furnace lining (14) through a side sealing device (19).

2. The continuous gas-fired lithium ore roasting kiln production line according to claim 1 is characterized in that: The material cart (15) includes a gas furnace inlet transfer cart (7), a gas furnace outlet transfer cart (10), a cooling furnace outlet transfer cart (12), a drying cart (8), a heating cart (9) and a cooling cart (11); the drying cart (8) is arranged inside the drying furnace section (4), the heating cart (9) is arranged inside the roasting furnace section (5), and the cooling cart (11) is arranged inside the independent cooling section (6).

3. The continuous gas-fired lithium ore roasting kiln production line according to claim 2 is characterized in that: The exhaust waste heat recovery system (24) includes a chimney and a waste heat recovery pipe. The chimney is evenly installed on the top of the outer wall of the furnace body frame (13) and the chimney is connected to the drying furnace section (4) and the roasting furnace section (5) respectively. The waste heat recovery pipe is connected to the drying furnace section (4) and the independent cooling section (6) respectively.

4. The continuous gas-fired lithium ore roasting kiln production line according to claim 3 is characterized in that: The chimney is provided with a rainproof cap, a lightning rod and a separate grounding body.

5. The continuous gas-fired lithium ore roasting kiln production line according to claim 4 is characterized in that: The dust removal system (3) is a bag dust collector.

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