Constant temperature device of precious metal roasting furnace

Abstract

The utility model belongs to the technical field of roasting furnace constant temperature, and particularly relates to a precious metal roasting furnace constant temperature device which comprises a furnace body, a smoke guide assembly arranged at the top of the furnace body and a tail gas treatment assembly arranged at the output end of the smoke guide assembly. Through combined application of accessories, combustors which are often arranged on the two sides of the furnace body are changed, high-temperature resistance wires are arranged on the six faces of the furnace body to be matched with heat preservation layers, the electric heating mode effectively solves the problem that individual areas are heated unevenly, high-temperature atmosphere can oxidize materials in a short time, and the situation that the treatment speed of the materials in the middle or away from a flame area is low is avoided; the temperature measuring points are arranged at the reasonable positions of the equipment, data acquisition is carried out in cooperation with the thermocouples, the temperature is effectively known through PLC monitoring, and it is ensured that precious metal materials are at the optimal roasting temperature for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of roasting furnace constant temperature, in particular to a constant temperature device for a precious metal roasting furnace. Background Technique

[0002] The principle of a precious metal roasting furnace is to use high-temperature treatment technology to effectively extract and process precious metals by controlling the temperature, atmosphere and reaction time in the furnace. The precious metal roasting furnace is mainly used to process waste materials containing precious metals. Through static gasification and incineration, the temperature balance, heat balance and material balance in each process section during incineration are ensured, laying a foundation for process control. During incineration, it is necessary to strictly control the temperature, atmosphere and reaction time to ensure the effective extraction and processing of precious metals.

[0003] In addition, the roasting process also involves tail gas treatment process devices such as rapid cooling, acid removal, dust removal, control of dioxins and heavy metals to ensure environmental protection and safety. Through the working process of the roasting furnace, it can be seen that after the precious metal material is subjected to high-temperature incineration, the organic matter is oxidized and enters the subsequent tail gas treatment with the flue gas to ensure the effective extraction of precious metals.

[0004] However, in the actual operation process, since the precious metal material is heated by the burner flame, that is, there is flame high-temperature oxidation. Usually, in the flame concentration area, the roasting effect of the material is better than that of other areas, and the material in the middle or far from the flame area has a relatively slow speed. Therefore, during the operation process, there is a difference in the roasting duration, which affects the roasting effect. Moreover, during the roasting process, when it is impossible to timely understand the internal temperature situation, it is difficult to ensure that the precious metal material is always at the optimal roasting temperature. Content of the Utility Model

[0005] The purpose of the utility model is to provide a constant temperature device for a precious metal roasting furnace to solve the problems mentioned in the above background technique, that is, since the precious metal material is heated by the burner flame, that is, there is flame high-temperature oxidation. Usually, in the flame concentration area, the roasting effect of the material is better than that of other areas, and during the roasting process, when it is impossible to timely understand the internal temperature situation, it is difficult to ensure that the precious metal material is always at the optimal roasting temperature.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: including a furnace body, a smoke guiding component arranged at the top of the furnace body, and a tail gas treatment component arranged at the output end of the smoke guiding component;

[0007] Among them:

[0008] The furnace body, the furnace body includes an outer shell, the inner wall of the outer shell is provided with a heat insulation layer and high-temperature resistance wires, and the side wall of the outer shell is provided with a furnace door;

[0009] Smoke guide assembly, the smoke guide assembly includes a first flue gas outlet communicating with the top of the housing, a connecting pipe threadedly connected to the first flue gas outlet, and a second flue gas outlet provided at the output end of the connecting pipe;

[0010] Tail gas treatment assembly, the tail gas treatment assembly includes a cylinder, and a connecting cover communicating with the second flue gas outlet is provided on the side wall of the cylinder.

[0011] Preferably, a base is provided at the bottom of the housing, a multi-channel oxygen supply port is opened on the side wall of the housing, and an oxygen supply fan is provided at the input end of the multi-channel oxygen supply port.

[0012] Preferably, a thermocouple is provided at the top of the housing, the thermocouple penetrates through the housing and the heat insulation layer, and the electrical output end of the thermocouple is electrically connected to a PLC temperature control interlock.

[0013] Preferably, multiple groups of the high-temperature resistance wires are provided on six surfaces inside the furnace body.

[0014] Preferably, an exhaust chimney is provided at the top of the circumferential outer wall of the cylinder, and a maintenance door is movably connected to the bottom of the circumferential outer wall of the cylinder through a hinge.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. For this kind of constant temperature device for precious metal roasting furnace, through the combined use of accessories, the burners usually arranged on both sides of the furnace body are changed, high-temperature resistance wires are arranged on six surfaces of the furnace body and are matched with a heat insulation layer. The electric heating effectively solves the problem of uneven heating in individual areas. The high-temperature atmosphere will oxidize the materials in a short time, avoiding the slow processing speed of the materials in the middle or far from the flame area, and there will be no difference in the roasting duration, ensuring the roasting effect.

[0017] 2. For this kind of constant temperature device for precious metal roasting furnace, through the combined use of accessories, multiple temperature measurement points are arranged at reasonable positions of the equipment, data is obtained in cooperation with the thermocouple, and through PLC monitoring, the temperature can be effectively understood to ensure that the precious metal materials are always at the best roasting temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0019] Figure 1 It is the overall structural schematic diagram of the constant temperature device for precious metal roasting furnace of the present invention;

[0020] Figure 2 Schematic diagram of the distribution of high-temperature resistance wires of the constant-temperature device for the precious metal roasting furnace of the present utility model;

[0021] Figure 3 Schematic sectional view of the furnace body assembly of the constant-temperature device for the precious metal roasting furnace of the present utility model;

[0022] Figure 4 Schematic internal view of the top view of the furnace body of the constant-temperature device for the precious metal roasting furnace of the present utility model;

[0023] Figure 5 Schematic sectional view of the top view of the furnace body of the constant-temperature device for the precious metal roasting furnace of the present utility model.

[0024] In the figure: 100, furnace body; 110, outer shell; 120, base; 130, heat insulation layer; 140, furnace door; 150, observation window; 160, multi-channel oxygen supply port; 170, thermocouple; 180, high-temperature resistance wire; 200, smoke guiding assembly; 210, first flue gas outlet; 220, connecting pipe; 230, second flue gas outlet; 300, tail gas treatment assembly; 310, cylinder; 320, connecting cover; 330, discharge chimney; 340, inspection door. Specific embodiments

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0026] In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] The utility model provides a constant temperature device for a precious metal roasting furnace, which changes the burners usually arranged on both sides of the furnace body. High-temperature resistance wires are arranged on six surfaces of the furnace body in cooperation with a heat preservation layer. The electric heating method effectively solves the problem of uneven heating in individual areas. The high-temperature atmosphere will oxidize the materials in a short time, avoiding the slow processing speed of the materials in the middle or far from the flame area, and there will be no difference in the roasting duration, ensuring the roasting effect. Multiple temperature measurement points are arranged at reasonable positions of the equipment, and data is obtained in cooperation with thermocouples. Through PLC monitoring, the temperature can be effectively understood to ensure that the precious metal materials are always at the optimal roasting temperature. Please refer to Figures 1 to 5 , the furnace body 100 includes a housing 110, and a heat preservation layer 130 and high-temperature resistance wires 180 are arranged on the inner wall of the housing 110. A furnace door 140 is arranged on the side wall of the housing 110;

[0029] The smoke guiding assembly 200 includes a first smoke outlet 210 communicated with the top of the housing 110, a connecting pipe 220 threadedly connected to the first smoke outlet 210, and a second smoke outlet 230 arranged at the output end of the connecting pipe 220;

[0030] The tail gas treatment assembly 300 includes a cylinder 310, and a connecting cover 320 communicated with the second smoke outlet 230 is arranged on the side wall of the cylinder 310;

[0031] During specific use, first, the material to be processed enters a container or a tray and is sent into the roasting furnace by mechanical or manual means. A heat preservation layer 130 and high-temperature resistance wires 180 are arranged in the housing of the furnace body 100. The high-temperature resistance wires 180 are arranged on the six inner surfaces of the housing 110 to achieve the purpose of omnidirectional heating. After being turned on, the materials are heated to cause internal chemical reactions, generating the required pyrolysis, dehydration, roasting or calcination effects. A first smoke outlet 210 is arranged at the top of the furnace body 100, and the exhausted gas after incineration enters the subsequent tail gas treatment assembly 300. A thermocouple 170 penetrating through to the inside is also arranged on the furnace body 100. The furnace body 100 heats the materials through high-temperature flames, and the heat treatment of the materials is realized under a controlled atmosphere, thereby realizing the required chemical reactions and product changes.

[0032] Meanwhile, in order to facilitate the support of the bottom of the housing 110 and effectively cooperate with oxygen supplementation, specifically, a base 120 is arranged at the bottom of the housing 110, and a multi-channel oxygen supplementation port 160 is arranged on the side wall of the housing 110. An oxygen supplementation fan is arranged at the input end of the multi-channel oxygen supplementation port 160. The multi-channel oxygen supplementation port 160 is a multi-angle oxygen supplementation port, and the oxygen supplementation fan can cooperate with the multi-channel oxygen supplementation port 160 to evenly distribute the air flow, effectively ensuring the combustion atmosphere and reducing the loss or loss of precious metals caused by flue gas turbulence.

[0033] Subsequently, to facilitate the setting of multiple temperature measurement points inside the furnace body 100, specifically, a thermocouple 170 is provided at the top of the outer shell 110. The thermocouple 170 penetrates through the outer shell 110 and the heat insulation layer 130. The electrical output end of the thermocouple 170 is electrically connected to a PLC temperature control interlock. The PLC temperature control interlock is a temperature control type PLC system. Multiple temperature measurement points are set at reasonable positions of the equipment. Through the monitoring of the PLC temperature control interlock, the heating rate is effectively controlled to ensure that the precious metal material is in the optimal roasting temperature for a long time. The heat insulation layer 130 is a heat-resistant and shock-resistant refractory heat insulation material, which meets the requirements of the furnace temperature heating rate, has better heat insulation performance than conventional materials, and lower energy consumption.

[0034] Immediately afterwards, to ensure the uniformity of the temperature inside the furnace body 100, specifically, multiple groups of high-temperature resistance wires 180 are provided on the six inner surfaces of the furnace body 100. The model of the high-temperature resistance wires 180 is: 0Cr21Al6Nb.

[0035] Furthermore, to facilitate flue gas emission and daily maintenance and repair, specifically, an exhaust chimney 330 is provided at the top of the circumferential outer wall of the cylinder 310, and a maintenance door 340 is movably connected to the bottom of the circumferential outer wall of the cylinder 310 through a hinge.

[0036] In addition, the conventional accessories and conventional structures involved in the present utility model are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to the internal structure and method.

[0037] Although the present utility model has been described above with reference to the embodiments, however, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present utility model can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A constant temperature device for a precious metal roasting furnace, characterized in that: It includes a furnace body (100), a smoke guiding component (200) arranged at the top of the furnace body (100), and an exhaust gas treatment component (300) arranged at the output end of the smoke guiding component (200); Among them: Furnace body (100), the furnace body (100) includes a housing (110), the inner wall of the housing (110) is provided with a heat preservation layer (130) and high-temperature resistance wires (180), and a furnace door (140) is arranged on the side wall of the housing (110); Smoke guiding component (200), the smoke guiding component (200) includes a first smoke outlet (210) communicated with the top of the housing (110), a connecting pipe (220) threadedly connected to the first smoke outlet (210), and a second smoke outlet (230) arranged at the output end of the connecting pipe (220); Exhaust gas treatment component (300), the exhaust gas treatment component (300) includes a cylinder (310), and a connecting cover (320) communicated with the second smoke outlet (230) is arranged on the side wall of the cylinder (310).

2. The constant temperature device for a precious metal roasting furnace according to claim 1, characterized in that: A base (120) is arranged at the bottom of the housing (110), a multi-channel oxygen supply port (160) is opened on the side wall of the housing (110), and an oxygen supply fan is arranged at the input end of the multi-channel oxygen supply port (160).

3. The constant temperature device for a noble metal roasting furnace according to claim 2, wherein: A thermocouple (170) is arranged at the top of the housing (110), the thermocouple (170) penetrates through the housing (110) and the heat preservation layer (130), and the electrical output end of the thermocouple (170) is electrically connected to a PLC temperature control interlock.

4. A constant temperature device for a precious metal roasting furnace according to claim 3, characterized in that: Multiple groups of the high-temperature resistance wires (180) are arranged on six surfaces inside the furnace body (100).

5. A constant temperature device for a precious metal roasting furnace according to claim 4, characterized in that: An exhaust chimney (330) is arranged at the top of the circumferential outer wall of the cylinder (310), and an inspection door (340) is movably connected to the bottom of the circumferential outer wall of the cylinder (310) through a hinge.

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