Roasting furnace reactor and roasting equipment

Abstract

The utility model relates to a roaster reactor and roasting equipment. The furnace body is provided with an inlet end, a furnace chamber section and an outlet section which are communicated in sequence; the cover plate covers the inlet end; the ceramic cover plate is fixed on the inner end surface, facing the furnace chamber section, of the cover plate; the ceramic lining is located on the inner wall of the furnace chamber section, and the ceramic lining is spliced with the ceramic cover plate; the ceramic tube is located on the inner wall of the outlet section, and the ceramic tube is bonded with the ceramic lining. The roaster reactor can reduce the possibility of pollution of magnetic foreign matters in products.

Description

Technical Field

[0001] The present disclosure relates to the technical field of anti-corrosion chemical equipment, and in particular to a roasting furnace reactor and roasting equipment. Background Art

[0002] Lithium batteries are widely used, and their safety during use has also attracted people's attention. Magnetic foreign matter in the positive electrode material of lithium-ion batteries, such as iron, zinc, and chromium, will dissolve during the charging process, and then gradually form dendrites at the negative electrode, which will cause perforation of the diaphragm and internal short circuit of the battery, leading to battery self-discharge, and even fire and explosion. Nickel-cobalt-manganese ternary positive electrode materials are synthesized by mixing nickel-cobalt-manganese ternary precursors with lithium and then synthesized by a high-temperature solid-phase method. The quality of the precursor performance directly determines the quality of the ternary material performance. Therefore, the magnetic foreign matter in the precursor of the positive electrode material of lithium-ion batteries must be strictly controlled during the production process. The spray roasting method is often used to prepare ternary precursor materials such as nickel-cobalt-manganese hydroxide, and a spray roasting device is used when executing the method. In the spray roasting device, the roasting furnace is the key core equipment.

[0003] The design temperature of the electric heating small roasting furnace is ≤1100℃, and the operating temperature is 700~900℃. The reactants contain metal ions, chloride ions, strong acids, etc., which are highly corrosive; moreover, after roasting, corrosive gases such as chlorine and hydrogen chloride and metal oxide powders will be produced. In a high-temperature oxidizing atmosphere, high-alloy stainless steels, whether high-nickel, high-chromium, or high-molybdenum, will corrode, causing magnetic foreign matter in the alloy, such as iron, zinc, and chromium, to enter the material, ultimately causing the performance of the precursor to decline, directly affecting the quality and performance of the ternary material.

[0004] Some methods use special stainless steel, but corrosion still exists, and magnetic foreign matter in the alloy, such as iron and chromium, will enter the material. Some other methods are to spray high-temperature resistant anti-corrosion coatings on the inner wall of the reactor, but the current anti-corrosion coating has a short service life and will still increase magnetic foreign matter in the material after a period of use. Although washing and demagnetization processes can be used to make up for the defects and improve the quality of ternary materials, the production cycle is long and the production cost is high.

[0005] It is expected that the problem of increasing magnetic foreign matter in the materials in the reactor can be alleviated or solved. Utility Model Content

[0006] Based on this, it is necessary to provide a roasting furnace reactor and roasting equipment to address the above problems.

[0007] The embodiment of the present disclosure provides a roasting furnace reactor, which includes: a furnace body, having an inlet end, a furnace chamber section and an outlet section connected in sequence; a cover plate, covering the inlet end; a ceramic cover plate, fixed to the inner end surface of the cover plate facing the furnace chamber section; a ceramic lining, located on the inner wall of the furnace chamber section, the ceramic lining and the ceramic cover plate are spliced ​​together; and a ceramic tube, located on the inner wall of the outlet section, the ceramic tube and the ceramic lining are bonded.

[0008] The roasting furnace reactor provided in the embodiment of the present disclosure effectively reduces the possible contamination of the reactants by the furnace body by providing a ceramic cover plate, a ceramic lining and a ceramic tube. The ceramic cover plate, the ceramic lining and the ceramic tube can withstand the temperature of the roasting process and will not introduce magnetic foreign matter; the combination of the ceramic cover plate and the ceramic lining ensures the integrity of the structure and is easy to assemble and manufacture; the bonding of the ceramic lining and the ceramic tube improves the structural strength and helps to prevent the product from being contaminated.

[0009] In some embodiments, the material of the ceramic cover plate is aluminum oxide or silicon nitride; the material of the ceramic liner is silicon nitride or aluminum oxide; and the material of the ceramic tube is aluminum oxide or silicon nitride.

[0010] With such a configuration, silicon nitride has high thermal stability, will not be oxidized below 1000℃, will form a protective film at 1000℃~1600℃ to prevent further oxidation, has strong antioxidant ability and high product dimensional accuracy and other excellent properties; except for hydrofluoric acid and hot phosphoric acid, silicon nitride does not react with other inorganic acids, has strong corrosion resistance, and does not introduce magnetic foreign matter into the product. Silicon nitride has good thermal conductivity, with a thermal conductivity of 23~28W / m·K at room temperature and a thermal conductivity of ≥18W / m·K at a high temperature of 900℃, which is equivalent to the thermal conductivity of ordinary stainless steel metal, and external heating can be conducted to the furnace in time; silicon nitride can resist cold and hot shocks, and will not break even if it is heated to above 1000℃ in the air, cooled rapidly and then heated rapidly; silicon nitride is wear-resistant and has a long service life. Alumina has good thermal insulation effect, acid resistance, wear resistance, high temperature resistance, and a long service life.

[0011] Exemplarily, the thermal conductivity of the ceramic liner is greater than the thermal conductivity of the ceramic cover plate. Exemplarily, the material of the ceramic cover plate is alumina; the material of the ceramic liner is silicon nitride; and the material of the ceramic tube is alumina.

[0012] The roasting furnace reactor can be designed with different types of heating and heat preservation structures. The ceramic lining made of silicon nitride can achieve the beneficial effects of high thermal stability, strong corrosion resistance, no introduction of magnetic substances, good thermal conductivity, and resistance to cold and hot shocks.

[0013] In some embodiments, the ceramic lining includes a plurality of ceramic cylinders connected in sequence, and two adjacent ceramic cylinders include a first ceramic cylinder and a second ceramic cylinder located on the side of the first ceramic cylinder facing away from the ceramic cover plate; the first ceramic cylinder includes a first cylinder body and a first sleeve ring located on the side of the first cylinder body facing the second ceramic cylinder; the second ceramic cylinder includes a second cylinder body and a second sleeve ring located on the side of the second cylinder body facing the first ceramic cylinder; the second sleeve ring is sleeved on the first sleeve ring.

[0014] With such arrangement, the ceramic lining is easy to assemble and form, and can ensure structural strength, reliable connection, and help to isolate the furnace body from the reactants.

[0015] In some embodiments, the ceramic cylinder is an integrated structure, two adjacent ceramic cylinders are bonded and fixed, and the roughness of the inner wall of the ceramic cylinder satisfies Ra0.6 to Ra0.8.

[0016] Such a setting helps to ensure the insulation ability of the ceramic lining; at the same time, the smooth ceramic cylinder can reduce material adsorption and wall adhesion, thereby improving the material collection rate.

[0017] In some embodiments, the material of the furnace chamber section and the material of the outlet section are both high temperature resistant stainless steel, and the furnace chamber section and the outlet section are welded; the ceramic lining and the ceramic tube are bonded by an inorganic high temperature resistant adhesive.

[0018] With such arrangement, the furnace structure is stable and the connection strength is high; it can also prevent the product to be discharged from being mixed with magnetic foreign matter.

[0019] In some embodiments, the roasting furnace reactor further includes a sealing gasket disposed between the cover plate and the furnace body; the ceramic cover plate is disposed on the ceramic lining, an expansion gap is disposed between the ceramic cover plate and the ceramic lining, and a size of the expansion gap along the covering direction is 1 mm to 2 mm.

[0020] Such an arrangement can ensure the seal between the cover plate and the furnace body, and can use the sealing gasket to adjust the expansion gap when the ceramic cover plate and the ceramic lining are assembled, thereby ensuring the good performance of the roasting furnace reactor when used at high temperatures.

[0021] In some embodiments, the inlet end and the furnace chamber section form an integrated metal structure, and the dimension of the inlet end along the cover direction is 5mm to 7mm; the wall thickness of the ceramic lining is 8mm to 10mm; and the thickness of the ceramic cover plate is 6mm to 8mm.

[0022] Such an arrangement can ensure the structural strength and assembly performance of each component of the roasting furnace reactor in a balanced manner. For example, the thermal conductivity of the silicon nitride ceramic lining can be ensured. For example, the thermal insulation performance of the alumina ceramic cover plate can be ensured.

[0023] In some embodiments, the roasting furnace reactor also includes a sprayer insertion pipe and an exhaust pipe, which are respectively connected to the outer end surface of the cover plate and are respectively connected to the furnace chamber section through the cover plate and the ceramic cover plate; the exhaust pipe includes a steel outer layer and a ceramic inner layer.

[0024] Thus configured, the roasting furnace reactor is used in a spray roasting process; at the same time, the ceramic inner layer can prevent the exhaust pipe from mixing magnetic foreign matter into the product.

[0025] In some embodiments, the ceramic cover plate includes a plurality of ceramic blocks, the plurality of ceramic blocks are laid along the cover plate, and two adjacent ceramic blocks are bonded by inorganic high temperature resistant glue; each of the sprayer extension pipe and the exhaust pipe is surrounded by at least two ceramic blocks.

[0026] With such arrangement, the ceramic cover plate can be reliably formed and the transmission of substances can be ensured.

[0027] The embodiment of the present disclosure also provides a roasting device, which includes: the aforementioned roasting furnace reactor; a heating system for heating the roasting furnace reactor; and a heat-insulating furnace chamber, which is sleeved on the heating system and the roasting furnace reactor.

[0028] The roasting equipment provided by the embodiment of the present disclosure effectively reduces the possible contamination of the reactants by the furnace body. In addition, the roasting furnace reactor of the roasting equipment has a long service life, is wear-resistant, high-temperature-resistant, and anti-oxidation, can work for a long time under the erosion, wear and corrosion of the molten metal, and is light in weight, easy to install, and requires almost no maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a roasting furnace reactor according to an embodiment of the present disclosure;

[0030] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0031] Figure 3 is a schematic structural diagram of a first ceramic cylinder in an embodiment of the present disclosure;

[0032] Figure 4 is a schematic structural diagram of a ceramic cover plate in an embodiment of the present disclosure;

[0033] Figure 5 It is a schematic diagram of the structure of the roasting equipment in the embodiment of the present disclosure.

[0034] Description of reference numerals: 1, furnace body; 11, inlet end; 12, furnace cavity section; 121, first furnace cavity section; 122, second furnace cavity section; 13, outlet section; 2, cover plate; 3, ceramic cover plate; 31, first ceramic block; 32, second ceramic block; 33, third ceramic block; 34, fourth ceramic block;

[0035] 4. Ceramic lining; 41. First ceramic tube; 411. First tube body; 412. First sleeve ring; 42. Second ceramic tube; 421. Second tube body; 422. Second sleeve ring; 43. Third ceramic tube; 44. Fourth ceramic tube; 45. Fifth ceramic tube; 5. Ceramic tube; 6. Sprayer insertion tube; 7. Exhaust pipe;

[0036] 100. Roasting furnace reactor; 200. Heating system; 300. Insulated furnace; 400. Roasting equipment. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present disclosure more obvious and understandable, the specific implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present disclosure. However, the embodiments of the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the embodiments of the present disclosure, so the embodiments of the present disclosure are not limited by the specific examples of the embodiments disclosed below.

[0038] In the description of the embodiments of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present disclosure.

[0039] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. Exemplarily, the second ceramic cylinder may also be referred to as the first ceramic cylinder, and the third ceramic cylinder may also be referred to as the second ceramic cylinder. In the description of the embodiments of the present disclosure, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a flexible connection, or a rigid connection along at least one direction; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or directly connected with the presence of an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. The terms "installed", "set", "fixed", etc. can be broadly understood as connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0042] See also Figure 1 , Figure 1 The roasting furnace reactor 100 provided in the embodiment of the present disclosure comprises a furnace body 1 and a cover plate 2 .

[0043] The furnace body 1 has an inlet end 11, a furnace cavity section 12 and an outlet section 13 which are connected in sequence. The furnace body 1 can be placed vertically when in use, and the inlet end 11, the furnace cavity section 12 and the outlet section 13 are arranged along the Z-axis direction. The inlet end 11 can be on the upper side of the furnace cavity section 12, and the outlet section 13 can be on the lower side of the furnace cavity section 12.

[0044] The cover plate 2 covers the inlet end 11. For example, a flange may be provided at the inlet end 11, and the cover plate 2 may be fixed to the flange by bolts. The cover plate 2 has an inner end surface facing the furnace body 1 and an outer end surface facing away from the furnace body 1.

[0045] In some embodiments, the roasting furnace reactor 100 further includes a ceramic cover plate 3. The ceramic cover plate 3 is fixed to the inner end surface of the cover plate 2 facing the inlet end 11 and the furnace chamber section 12. Then, after the roasting furnace reactor 100 is installed, the ceramic cover plate 3 can be embedded in the inlet end 11.

[0046] In some embodiments, the roasting furnace reactor 100 further includes a ceramic lining 4. The ceramic lining 4 is disposed in the furnace body 1. The ceramic lining 4 is located on the inner wall of the furnace chamber section 12, and the ceramic lining 4 is assembled with the ceramic cover plate 3.

[0047] In some embodiments, the calciner reactor 100 further includes a ceramic tube 5. The ceramic tube 5 is located on the inner wall of the outlet section 13. The ceramic tube 5 is bonded to the ceramic liner 4.

[0048] The roasting furnace reactor 100 provided in the embodiment of the present disclosure can effectively reduce the possibility of the furnace body 1 and the cover plate 2 introducing magnetic foreign matter into the product in the furnace by providing the ceramic cover plate 3, the ceramic lining 4 and the ceramic tube 5.

[0049] In some optional embodiments, when the roasting furnace reactor 100 is in use, the furnace body 1 is usually heated to increase the temperature inside the furnace, and then a heat preservation layer is provided on the outside of the cover plate 2 or the outside of the outlet section 13 to improve the heat preservation effect of the furnace chamber section 12. Optionally, the material of the ceramic cover plate 3 is silicon nitride.

[0050] In an exemplary embodiment, the material of the ceramic lining 4 is silicon nitride. Silicon nitride is a structural ceramic material that has superior high temperature resistance, corrosion resistance, wear resistance, high toughness, high bending strength and other properties than other metals and materials, and can be used in high-demand extreme operating environments. The theoretical thermal conductivity of Si3N4 crystal is 200-320W / m·K, and the thermal conductivity of common gas pressure sintered silicon nitride on the market is about 27W / m·K; in addition, the thermal conductivity at high temperature is similar to that of ordinary stainless steel. The ceramic lining 4 made of silicon nitride can both isolate the furnace body 1 from the reactants in the furnace and transfer the heat outside the furnace to the furnace.

[0051] For example, the material of the ceramic cover plate 3 is alumina, and the material of the ceramic tube 5 is alumina. The ceramic cover plate 3 and the ceramic tube 5 made of alumina have good heat preservation effect, are acid-resistant, wear-resistant, and high-temperature-resistant, and have a long service life.

[0052] Exemplarily, the material of the furnace body 1 is stainless steel, for example, high temperature resistant stainless steel. The material of the cover plate 2 can also be high temperature resistant stainless steel.

[0053] In some embodiments, the ceramic liner 4 includes a plurality of ceramic tubes connected in sequence. The ceramic tube has good structural strength and a large use space. Figure 1 As shown, the ceramic liner 4 includes a first ceramic tube 41, a second ceramic tube 42, a third ceramic tube 43, a fourth ceramic tube 44 and a fifth ceramic tube 45. In some cases, for example, the third ceramic tube 43 can be called the first ceramic tube, and the fourth ceramic tube 44 can be called the second ceramic tube.

[0054] refer to Figure 1 Combined with Figure 2 As shown, Figure 2 Shows Figure 1The enlarged view of the A in the middle. Of the two adjacent ceramic cylinders, the second ceramic cylinder 42 is located on the side of the first ceramic cylinder 41 facing away from the ceramic cover plate 3. The first ceramic cylinder 41 includes a first cylinder body 411 and a first sleeve ring 412 located on the side of the first cylinder body 411 facing the second ceramic cylinder 42. The second ceramic cylinder 42 includes a second cylinder body 421 and a second sleeve ring 422 located on the side of the second cylinder body 421 facing the first ceramic cylinder 41.

[0055] For example, Figure 2 As shown, the second sleeve ring 422 is sleeved with the first sleeve ring 412. The material at the inner wall surface of the ceramic liner 4 flows through the first barrel body 411, the first sleeve ring 412 and the second barrel body 421 and can continue to be transported downward.

[0056] refer to Figure 3 , exemplarily, the ceramic cylinder is an integrated structure. The shape of each ceramic cylinder can be the same, so as to facilitate production and assembly.

[0057] Exemplarily, the furnace chamber section 12 includes a first furnace chamber section 121 and a second furnace chamber section 122. The first furnace chamber section 121 is disposed on the upper side of the second furnace chamber section 122, and the reactant is transported from the first furnace chamber section 121 to the second furnace chamber section 122. The first furnace chamber section 121 may have a substantially cylindrical structure, and the second furnace chamber section 122 may have a substantially conical structure. The ceramic cylinder located in the second furnace chamber section 122, such as the fifth ceramic cylinder 45, may be conical; and each ceramic cylinder located in the first furnace chamber section 121 may be cylindrical.

[0058] For example, two adjacent ceramic cylinders are bonded by inorganic high temperature resistant adhesive, so that the strength of the ceramic lining 4 can be ensured and the furnace chamber section 12 can be effectively isolated from the reactants.

[0059] In an optional embodiment, the material of the ceramic lining 4 is alumina, and the material of the ceramic cover plate 3 is silicon nitride. In some embodiments, the corresponding external heating position

[0060] For example, the roughness of the inner wall of the ceramic lining 4 or the inner wall of the ceramic cylinder meets Ra0.6 to Ra0.8, which is helpful to avoid the adhesion of reactants and ensure the smooth transportation of materials.

[0061] refer to Figure 1 The inlet end 11 and the furnace section 12 can be an integrated structure; the outlet section 13 and the ceramic tube 5 can be a composite integrated structure. Then the outlet section 13 is fixedly connected to the furnace section 12; the ceramic tube 5 is fixedly connected to the ceramic lining 4.

[0062] The materials of the furnace chamber section 12 and the outlet section 13 are both high temperature resistant stainless steel, and the furnace chamber section 12 and the outlet section are welded. The ceramic lining 4 and the ceramic tube 5 are bonded by inorganic high temperature resistant glue. Such an arrangement can prevent the furnace chamber section 12 and the outlet section 13 from contacting the product.

[0063] In some embodiments, the portion covered by the ceramic lining 4 is considered to be the furnace chamber section 12, and the portion exposed on the upper portion of the furnace body 1 is called the inlet end 11. A gap of 5 mm to 7 mm may be left between the upper end of the ceramic lining 4 and the upper end of the furnace body 1.

[0064] In an exemplary embodiment, the roasting furnace reactor 100 further includes a sealing gasket (not shown). The sealing gasket is disposed between the cover plate 2 and the furnace body 1. The sealing gasket can seal the cover plate 2 and the furnace body 1, and can also adjust the interval between the cover plate 2 and the furnace body 1 by using the sealing gasket.

[0065] The ceramic cover plate 3 can be embedded in the inlet end 11. The ceramic cover plate 3 is covered on the ceramic liner 4, and the covering direction is substantially parallel to the Z-axis direction. An expansion gap is provided between the ceramic cover plate 3 and the ceramic liner 4, and the size of the expansion gap along the covering direction is 1 mm to 2 mm. After the roasting furnace reactor 100 is heated, the expansion gap helps to absorb the thermal deformation of the ceramic cover plate 3 and the ceramic liner 4.

[0066] In some embodiments, the inlet end 11 and the furnace chamber section 12 form an integrated metal structure, and the size of the inlet end 11 along the cover direction is 5 mm to 7 mm; the thickness of the ceramic cover plate is 6 mm to 8 mm. For example, the depth of the inlet end 11 can be set to 5 mm, the thickness of the sealing gasket is 3 mm, and the thickness of the ceramic cover plate is 7 mm.

[0067] Exemplarily, the wall thickness of the ceramic liner 4 is 8 mm to 10 mm, such as 8.5 mm or 9 mm. The ceramic cylinder can be manufactured and the first ring 412 can be formed to have the same thickness as the second ring 422 .

[0068] refer to Figure 1 The roasting furnace reactor 100 provided in the embodiment of the present disclosure can be used in the spray roasting process. Exemplarily, the roasting furnace reactor 100 also includes a sprayer insertion pipe 6 and an exhaust pipe 7. The sprayer insertion pipe 6 can be used to allow the spray rod to extend into the inner cavity formed by the ceramic liner 4 for liquid intake; the exhaust pipe 7 can be used to exhaust smoke.

[0069] The sprayer insertion pipe 6 and the exhaust pipe 7 are respectively connected to the outer end surface of the cover plate 2, and are respectively connected to the furnace chamber section 12 through the cover plate 2 and the ceramic cover plate 3. The sprayer insertion pipe 6 and the exhaust pipe 7 can be arranged along the X-axis direction.

[0070] Exemplarily, the material of the sprayer insertion tube 6 can be high temperature resistant stainless steel, which can be welded to the cover plate 2. The exhaust pipe 7 includes a steel outer layer and a ceramic inner layer (not shown). The material of the steel outer layer is high temperature resistant stainless steel, which can be welded to the cover plate 2. The material of the ceramic inner layer can be alumina, which can be bonded to the ceramic cover plate 3 by an inorganic high temperature resistant adhesive.

[0071] refer to Figure 1 and Figure 4 For example, the ceramic cover plate 3 includes a plurality of ceramic blocks. The ceramic blocks are laid along the cover plate 2, and two adjacent ceramic blocks are bonded by inorganic high temperature resistant glue.

[0072] Each of the sprayer insertion pipe 6 and the exhaust pipe 7 is surrounded by at least two ceramic blocks. Exemplarily, the first ceramic block 31, the second ceramic block 32, the third ceramic block 33 and the fourth ceramic block 34 are respectively approximately 90° fan rings, and can surround the sprayer insertion pipe 6 approximately located at the center of the cover plate 2. The second ceramic block 32 and the fourth ceramic block 34 can respectively have notches that can match each other to avoid the passage of the exhaust pipe 7.

[0073] refer to Figure 5 The embodiment of the present disclosure provides a roasting device 400, which includes a roasting furnace reactor 100, a heating system 200 and a heat preservation furnace 300. The roasting furnace reactor 100 can refer to the above embodiment.

[0074] Exemplarily, the heating system 200 may be an electric heating system. The heating system 200 may be arranged around the roasting furnace reactor 100, specifically, around the furnace body 1. The heating system 200 is used to heat the roasting furnace reactor 100. The furnace chamber section 12 and the ceramic lining 4 can transfer heat to the furnace, thereby evaporating and pyrolyzing the droplets in the furnace.

[0075] The heat preservation furnace 300 is sleeved on the heating system 200 and the roasting furnace reactor 100. The heat preservation furnace 300 is used for heat preservation, and the temperature rise of its outer surface can be controlled to be less than 50°C.

[0076] The roasting equipment 400 provided in the embodiment of the present disclosure is configured with a ceramic lining 4, which has a long service life, is wear-resistant, high-temperature-resistant, and anti-oxidation, can work for a long time under the erosion, wear, and corrosion of molten metal, and is light in weight, easy to install, and requires almost no maintenance.

[0077] Exemplarily, the roasting equipment 400 may further include an automatic control system (not shown), which can control the heating system 200 and can also control operations such as feeding and discharging.

[0078] The technical features of the embodiments disclosed above can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] In the embodiments disclosed above, unless otherwise clearly specified and limited, the execution order of each step is not limited, for example, it can be executed in parallel, or it can be executed successively in different orders. The sub-steps of each step can also be executed alternately. The above-mentioned various forms of processes can be used, and steps can be reordered, added or deleted, as long as the desired results of the technical solution provided in the embodiment of the present disclosure can be achieved, and this document does not limit it here.

[0080] The above disclosed embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the scope of patent protection required by the utility model. Therefore, the scope of patent protection of the utility model shall be based on the attached claims.

Claims

1. A roasting furnace reactor, characterized in that include: A furnace body, having an inlet end, a furnace chamber section and an outlet section which are connected in sequence; A cover plate, covering the inlet end; A ceramic cover plate, fixed to the inner end surface of the cover plate facing the furnace chamber section; A ceramic lining is located on the inner wall of the furnace chamber section, and the ceramic lining is assembled with the ceramic cover plate; as well as A ceramic tube is located on the inner wall of the outlet section, and the ceramic tube is bonded to the ceramic lining.

2. The roasting furnace reactor according to claim 1, characterized in that The material of the ceramic cover plate is aluminum oxide or silicon nitride; the material of the ceramic lining is silicon nitride or aluminum oxide; the material of the ceramic tube is aluminum oxide or silicon nitride.

3. The roasting furnace reactor according to claim 1, characterized in that: The ceramic lining includes a plurality of ceramic tubes connected in sequence, and two adjacent ceramic tubes include a first ceramic tube and a second ceramic tube located on a side of the first ceramic tube facing away from the ceramic cover plate; The first ceramic tube comprises a first tube body and a first sleeve ring located on the side of the first tube body facing the second ceramic tube; the second ceramic tube comprises a second tube body and a second sleeve ring located on the side of the second tube body facing the first ceramic tube; The second ring is sleeved on the first ring.

4. The roasting furnace reactor according to claim 3, characterized in that: The ceramic tube is an integrated structure, two adjacent ceramic tubes are bonded and fixed, and the roughness of the inner wall of the ceramic tube meets Ra0.6 to Ra0.

8.

5. The roasting furnace reactor according to claim 1, characterized in that: The materials of the furnace chamber section and the outlet section are both high temperature resistant stainless steel, and the furnace chamber section and the outlet section are welded; The ceramic lining and the ceramic tube are bonded by inorganic high temperature resistant adhesive.

6. The roasting furnace reactor according to claim 1, characterized in that: Also included is a sealing gasket, which is arranged between the cover plate and the furnace body; The ceramic cover plate is covered on the ceramic liner, an expansion gap is provided between the ceramic cover plate and the ceramic liner, and a dimension of the expansion gap along the covering direction is 1 mm to 2 mm.

7. The roasting furnace reactor according to claim 6, characterized in that The inlet end and the furnace chamber section form an integrated metal structure, and the size of the inlet end along the cover setting direction is 5 mm to 7 mm; The wall thickness of the ceramic lining is 8 mm to 10 mm; the thickness of the ceramic cover plate is 6 mm to 8 mm.

8. The roasting furnace reactor according to claim 1, characterized in that: It also includes a sprayer insertion pipe and an exhaust pipe, wherein the sprayer insertion pipe and the exhaust pipe are respectively connected to the outer end surface of the cover plate, and are respectively connected to the furnace chamber section through the cover plate and the ceramic cover plate; The exhaust pipe includes a steel outer layer and a ceramic inner layer.

9. The roasting furnace reactor according to claim 8, characterized in that The ceramic cover plate comprises a plurality of ceramic blocks, the plurality of ceramic blocks are laid along the cover plate, and two adjacent ceramic blocks are bonded by inorganic high temperature resistant glue; Each of the sprayer inlet pipe and the exhaust pipe is surrounded by at least two of the ceramic blocks.

10. A roasting device, characterized in that: include: A roaster reactor as claimed in any one of claims 1 to 9; A heating system, used for heating the roasting furnace reactor; as well as The heat-insulating furnace is sleeved on the heating system and the roasting furnace reactor.

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