Gold concentrate desulfurization and acid-making roasting furnace

Abstract

The utility model discloses a gold concentrate desulfurization and acid-making roasting furnace, and belongs to the field of gold concentrate desulfurization and acid-making. A gold concentrate desulfurization and acid-making roasting furnace comprises a furnace body and further comprises a control box fixedly arranged on one side of the furnace body. The exhaust pipe is arranged on the outer side of the furnace body; the placing frame is arranged in the furnace body; the trays are arranged on the placement frame at equal intervals; according to the device, heat of discharged sulfur dioxide gas is effectively recycled, heat waste is reduced, heated oxygen can be prevented from being blown to gold concentrate to cool the gold concentrate to affect the desulfurization effect of the gold concentrate, and the problem that oxygen is wasted due to the fact that currently supplied oxygen completely participates in reaction is solved.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization and acid production technology of gold concentrate, and in particular to a gold concentrate desulfurization and acid production roasting furnace. Background Technology

[0002] In the gold smelting industry, desulfurization of gold concentrate for acid production is a crucial step. Gold concentrate typically contains a certain amount of sulfur, which can negatively impact the purity of the gold and the smelting equipment during subsequent smelting processes. Therefore, desulfurization of the gold concentrate is necessary before smelting, and the sulfur dioxide generated during desulfurization is used to produce acid, achieving comprehensive resource utilization.

[0003] Currently, when desulfurizing and roasting gold concentrate, gas-fired or electric furnaces are generally used for roasting, followed by oxygen supply. When the supplied oxygen comes into contact with the gold concentrate, sulfur dioxide gas is produced. The discharged sulfur dioxide gas carries away a large amount of heat, which may cause heat loss. Furthermore, the oxygen supply is done directly, which may not be precise and may result in some gas being discharged without contacting the gold concentrate. In this case, the oxygen may be wasted as it is discharged with the waste gas. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a gold concentrate desulfurization and acid roasting furnace that can overcome or at least partially solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gold concentrate desulfurization and acid roasting furnace includes: a furnace body, which is a multi-layered insulated furnace body; and a control box, an exhaust pipe, a placement rack, trays, a connecting pipe, and an oxygen supply pipe. The control box is fixedly installed on one side of the furnace body; the placement rack is installed inside the furnace body; multiple trays are equidistantly arranged on the placement rack; the exhaust pipe is installed on the outside of the furnace body; a heat exchange component is installed inside the exhaust pipe; and a connecting pipe for supplying oxygen to the furnace body is installed on the furnace body.

[0007] To facilitate heat exchange, the heat exchange assembly further includes a heat exchange box disposed inside the exhaust pipe. Multiple heat-absorbing plates are arranged circumferentially inside the heat exchange box, with their inner ends fixed to form an annular channel. One section of the connecting pipe passes through this annular channel.

[0008] To facilitate the placement of the tray, multiple sets of metal plates are fixedly connected to the placement rack, and the tray is slidably mounted on the metal plates.

[0009] Preferably, the connecting pipe includes a main pipeline and two component pipelines; the two component pipelines are connected in parallel at one end of the main pipeline, and a section of the main pipeline passes through the annular channel of the heat exchange component; the two component pipelines are respectively arranged on both sides of the placement rack; multiple jet pipes are respectively arranged from top to bottom on the two component pipelines, and the jet pipes are respectively placed between the upper and lower spaced trays.

[0010] To further improve the contact efficiency between oxygen and gold concentrate, two sets of opposing metal plates are fixedly installed on the placement rack. The metal plates are inclined upwards, and a first gap is provided between the two sets of opposing metal plates. A connecting cavity is provided at one end of the placement rack near the exhaust pipe, and a fixing pipe is provided between the connecting cavity and the exhaust pipe.

[0011] To facilitate precise air supply, the jet pipe and the metal plate are further inclined in the same direction.

[0012] Preferably, a feed inlet is provided on one side of the furnace body, and a furnace door is installed at the feed inlet.

[0013] Compared with the prior art, this utility model provides a gold concentrate desulfurization and acid production roasting furnace, which has the following beneficial effects:

[0014] 1. In this gold concentrate desulfurization and acid roasting furnace, the oxygen supply mechanism delivers oxygen to the heat exchange box through an oxygen supply pipe. Inside the heat exchange box, the oxygen comes into contact with the heat absorption plate and absorbs heat from the high-temperature sulfur dioxide gas, causing its temperature to rise. The heated oxygen then enters the furnace body through the connecting pipe and the jet pipe. Under the action of high temperature and oxygen, the gold concentrate undergoes a desulfurization reaction, producing gases such as sulfur dioxide. This effectively recycles the heat from the discharged sulfur dioxide gas, reducing heat waste. Furthermore, the heated oxygen prevents the gold concentrate from cooling down and affecting its desulfurization effect when blown onto it.

[0015] 2. This gold concentrate desulfurization and acid roasting furnace uses jet pipes to precisely supply air to each tray, and guides the airflow through inclined metal plates to ensure precise contact between the gas and the gold concentrate, thereby improving desulfurization efficiency. This solves the problem of reduced sulfur dioxide concentration in the exhaust gas due to insufficient oxygen participation in the current reaction. At the same time, the sulfur dioxide gas after the reaction directly enters the connecting cavity and is finally discharged through a fixed pipe, which can reduce internal heat loss.

[0016] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention effectively recycles the heat from the discharged sulfur dioxide gas, reducing heat waste. Furthermore, the heated oxygen can prevent it from cooling down after being blown onto the gold concentrate, thus affecting its desulfurization effect. This solves the problem of oxygen waste caused by the current supply of oxygen not fully participating in the reaction. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of a gold concentrate desulfurization and acid roasting furnace proposed in this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of a gold concentrate desulfurization and acid roasting furnace proposed in this utility model.

[0019] Figure 3 This is a partial structural schematic diagram of a gold concentrate desulfurization and acid roasting furnace proposed in this utility model.

[0020] Figure 4 This utility model proposes a gold concentrate desulfurization and acid roasting furnace. Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This utility model proposes a gold concentrate desulfurization and acid roasting furnace. Figure 3 Enlarged diagram of point B in the middle.

[0022] The following are the labels in the diagram: 1. Furnace body; 101. Control box; 102. Exhaust pipe; 103. Heat exchange box; 104. Absorber plate; 2. Placement rack; 201. Connecting cavity; 202. Fixing pipe; 203. Metal plate; 204. First gap; 205. Tray; 3. Oxygen supply pipe; 301. Connecting pipe; 302. Jet pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] Example 1: Refer to Figures 1-5 A desulfurization and acid roasting furnace for gold concentrate includes: a furnace body 1, which is a multi-layer insulated furnace body; and a control box 101, an exhaust pipe 102, a placement rack 2, trays 205, a connecting pipe 301, and an oxygen supply pipe 3. The control box 101 is fixedly installed on one side of the furnace body 1; the placement rack 2 is installed inside the furnace body 1; multiple trays 205 are equidistantly arranged on the placement rack 2; the exhaust pipe 102 is installed on the outside of the furnace body 1; a heat exchange assembly is installed inside the exhaust pipe 102; and a connecting pipe 301 for supplying oxygen to the furnace body 1 is installed on the furnace body 1, and the connecting pipe 301 is a ceramic pipe.

[0026] In another embodiment, the connecting pipe 301 can also be embedded in the heat-insulating side wall of the furnace body 1; one end of the connecting pipe 301 is connected to the interior of the furnace body 1; the other end of the connecting pipe 301 passes through the heat exchange assembly.

[0027] In use, the connecting pipe 301 is connected to the oxygen supply pipe 3 and the oxygen supply mechanism.

[0028] The heat exchange assembly includes a heat exchange box 103 disposed inside the exhaust pipe 102. Multiple heat absorption plates 104 are arranged circumferentially inside the heat exchange box 103. The inner ends of the multiple heat absorption plates 104 are fixed and form an annular channel. One section of the connecting pipe 301 passes through the annular channel.

[0029] When in use, the operator places the gold concentrate evenly on the tray 205, and then slides the tray 205 along the metal plate 203 to the appropriate position on the placement rack 2.

[0030] Start the control box 101 and set the parameters such as the required roasting temperature and oxygen supply rate. The oxygen supply mechanism delivers oxygen to the heat exchange box 103 through the oxygen supply pipe 3. The heat absorption plate 104 is made of graphite, which has high thermal stability and good heat absorption performance. The heat absorption plate 104 can concentrate heat at the heat exchange box 103. When the oxygen comes into contact with the heat absorption plate 104, it absorbs the heat of the high-temperature sulfur dioxide gas and its temperature rises. Under the action of high temperature and oxygen, the gold concentrate undergoes a desulfurization reaction, producing sulfur dioxide and other gases. The sulfur dioxide gas produced is treated by the collection and purification components, thereby effectively recycling the heat of the discharged sulfur dioxide gas, reducing heat waste, and preventing the heated oxygen from cooling down the gold concentrate and affecting its desulfurization effect.

[0031] Example 2: Refer to Figures 1-5 A desulfurization and acid-making roasting furnace for gold concentrate is basically the same as in Example 1, but further, the connecting pipe 301 includes a main pipeline and two component pipelines; the two component pipelines are connected in parallel at one end of the main pipeline, and one section of the main pipeline passes through the annular channel of the heat exchange component; the two component pipelines are respectively arranged on both sides of the placement rack 2; multiple jet pipes 302 are respectively arranged from top to bottom on the two component pipelines, and the jet pipes 302 are respectively placed between the upper and lower spaced trays 205. The jet pipes 302 are ceramic pipes; the jet pipes 302 can provide oxygen diversion, so that oxygen passes through each layer of gold concentrate at a uniform flow rate, which can maximize the oxygen mass transfer efficiency, so that the oxygen can react quickly and fully with each layer of gold concentrate, ensuring the desulfurization effect.

[0032] Two sets of metal plates 203 are fixedly installed on the placement rack 2. The metal plates 203 are inclined upwards, and a first gap 204 is provided between the two sets of metal plates 203. A connecting cavity 201 is provided at one end of the placement rack 2 near the exhaust pipe 102, and a fixing pipe 202 is provided between the connecting cavity 201 and the exhaust pipe 102.

[0033] The jet pipe 302 and the metal plate 203 are inclined in the same direction.

[0034] In actual use, the jet pipe 302 precisely supplies air to each tray 205, and the upward-sloping metal plate 203 guides the airflow, ensuring precise contact with the gold concentrate and improving its desulfurization efficiency; (Refer to...) Figure 2 Oxygen flows from left to right, gradually reacting completely with the gold concentrate, solving the problem of reduced sulfur dioxide concentration in the exhaust gas due to insufficient oxygen supply for the reaction. At the same time, the sulfur dioxide gas after the reaction directly enters the connecting cavity 201 and is finally discharged through the fixed pipe 202, which can also reduce internal heat loss.

[0035] As needed, a feed inlet is provided on one side of the furnace body 1, and a furnace door is installed at the feed inlet to ensure the entry and exit of gold concentrate materials.

[0036] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A gold concentrate desulfurization and acid roasting furnace, comprising: Furnace body (1), the furnace body (1) is a multi-layer heat-insulated furnace body; It also includes: a control box (101), an exhaust pipe (102), a placement rack (2), a tray (205), a connecting pipe (301), and an oxygen supply pipe (3). The control box (101) is fixedly installed on one side of the furnace body (1); the placement rack (2) is installed inside the furnace body (1); multiple trays (205) are equidistantly placed on the placement rack (2); the exhaust pipe (102) is installed on the outside of the furnace body (1); the heat exchange assembly is installed inside the exhaust pipe (102); and the connecting pipe (301) for supplying oxygen to the furnace body (1) is installed on the furnace body (1).

2. The gold concentrate desulfurization and acid roasting furnace according to claim 1, characterized in that, The heat exchange assembly includes a heat exchange box (103) disposed inside the exhaust pipe (102). Multiple heat-absorbing plates (104) are arranged around the circumference inside the heat exchange box (103). The inner ends of the multiple heat-absorbing plates (104) are fixed and form an annular channel. One end of the connecting pipe (301) passes through the annular channel.

3. The gold concentrate desulfurization and acid roasting furnace according to claim 2, characterized in that, Multiple sets of metal plates (203) are fixedly connected to the placement rack (2), and the tray (205) is slidably disposed on the metal plates (203).

4. The gold concentrate desulfurization and acid roasting furnace according to claim 3, characterized in that, The connecting pipe (301) includes a main pipeline and two component pipelines; the two component pipelines are connected in parallel at one end of the main pipeline, and one section of the main pipeline passes through the annular channel of the heat exchange component; the two component pipelines are respectively arranged on both sides of the placement rack (2); multiple jet pipes (302) are respectively arranged from top to bottom on the two component pipelines, and the jet pipes (302) are respectively placed between the upper and lower spaced trays (205).

5. The gold concentrate desulfurization and acid roasting furnace according to claim 4, characterized in that, Two sets of metal plates (203) are fixedly installed on the placement rack (2). The metal plates (203) are inclined upwards, and a first gap (204) is provided between the two sets of metal plates (203). A connecting cavity (201) is provided at one end of the placement rack (2) near the exhaust pipe (102), and a fixing pipe (202) is provided between the connecting cavity (201) and the exhaust pipe (102).

6. The gold concentrate desulfurization and acid roasting furnace according to claim 5, characterized in that, The jet pipe (302) and the metal plate (203) are inclined in the same direction.

7. A gold concentrate desulfurization and acid roasting furnace according to claim 4, characterized in that, A feed inlet is provided on one side of the furnace body (1), and a furnace door is installed at the feed inlet.

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