Fire assaying gold separation liquid grading reaction cleaning device

Abstract

The utility model relates to the technical field of fire assaying gold separation, in particular to a fire assaying gold separation liquid grading reaction cleaning device which comprises a gold separation liquid storage tank, a primary gold separation liquid reaction tank, a secondary gold separation liquid reaction tank and a waste liquid neutralization reaction tank, the staged reaction cleaning device is of a two-step structure, the gold separation liquid storage tank and the primary gold separation liquid reaction tank are arranged on a first step, the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank are arranged on a second step, and the first step is higher than the second step; the gold separation liquid storage tank and the primary gold separation liquid reaction tank, the gold separation liquid storage tank and the secondary gold separation liquid reaction tank, the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank, and the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank can be communicated or not communicated; and openings are formed in the bottoms of the primary gold separation liquid reaction tank and the secondary gold separation liquid reaction tank, and sand cores are arranged on the openings. The device can realize separation and recovery of silver particles in the gold separation liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of fire assaying gold separation, in particular to a fire assaying gold separation liquid grading reaction cleaning device. Background Art

[0002] The fire assay analysis test method is the main detection method for gold and silver analysis and trade arbitration in the gold industry at home and abroad. There is a process of nitric acid separation in the fire assay test. In general, the separation of gold is to put the gold and silver particles into a certain concentration of nitric acid. The silver in the gold and silver particles reacts with nitric acid to form a silver nitrate solution. In order to ensure that the silver in the gold and silver particles reacts as much as possible, two separation operations are required, namely the first separation and the second separation. The separation liquid after separation contains a large amount of silver, which needs to be recovered. Among them, the main component of the first separation liquid is silver nitrate, and the silver ion content is very high. At the same time, it contains a small amount of impurities (copper, iron, lead, etc. that originally existed in the crude gold). The concentration of nitric acid added during the first separation reaction is nitric acid: water = 1:1, and the reaction temperature is 95°C; while the silver ions in the second separation liquid are significantly reduced (most of the reaction is completed during the first separation), and due to the increase in nitric acid concentration (nitric acid: water = 2:1) and reaction temperature (110°C), the content of impurity elements is significantly increased. Therefore, since the content of impurity elements in the primary and secondary gold separation liquids is different, they need to be stored and recovered separately.

[0003] However, the prior art lacks a device for recovering silver in the gold separation liquid, resulting in a large amount of silver waste in the gold-silver mixed particles.

[0004] Therefore, there is an urgent need for a device that can separate and recover the silver in the gold separation liquid. Utility Model Content

[0005] In order to solve the above technical problems existing in the prior art, the utility model provides a fire assaying gold separation liquid graded reaction cleaning device.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] The utility model provides a fire assay gold separation liquid graded reaction cleaning device, comprising a gold separation liquid storage tank, a primary gold separation liquid reaction tank, a secondary gold separation liquid reaction tank, and a waste liquid neutralization reaction tank;

[0008] The graded reaction cleaning device is a two-stage stepped structure, the gold separation liquid storage tank and the primary gold separation liquid reaction tank are arranged on the first step, the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank are arranged on the second step, and the height of the first step is higher than the height of the second step;

[0009] The gold separation liquid storage tank and the primary gold separation liquid reaction tank, the gold separation liquid storage tank and the secondary gold separation liquid reaction tank, the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank, and the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank can be connected or disconnected;

[0010] The bottoms of the primary gold separation liquid reaction tank and the secondary gold separation liquid reaction tank are both provided with openings, and sand cores are provided on the openings.

[0011] The fire assaying gold separation liquid graded reaction cleaning device can realize the separation and recovery of silver particles in the gold separation liquid, is suitable for large-scale operation, does not produce waste acid, is safe, environmentally friendly, convenient and fast to operate, greatly improves efficiency, and can realize the graded recovery of the primary gold separation liquid and the secondary gold separation liquid.

[0012] On the basis of the above technical solution, the present invention can also make the following technical improvements:

[0013] Furthermore, the first gold separation liquid reaction tank and the second gold separation liquid reaction tank are cylindrical reaction tanks.

[0014] The beneficial effect of adopting the above further technical solution is that it is convenient for precipitation reaction and stirring.

[0015] Furthermore, a stirrer is provided in the cylindrical reaction tank.

[0016] The beneficial effect of adopting the above further technical solution is to accelerate the reaction and precipitation of silver particles and improve efficiency.

[0017] Furthermore, drainage pipes are provided between the gold separation liquid storage tank and the primary gold separation liquid reaction tank, between the gold separation liquid storage tank and the secondary gold separation liquid reaction tank, between the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank, and between the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank.

[0018] The beneficial effect of adopting the above further technical solution is that directional discharge of liquid can be achieved through the drain pipe.

[0019] Furthermore, the drainage pipe is arranged at the bottom of the gold separation liquid storage tank, the primary gold separation liquid reaction tank, and the secondary gold separation liquid reaction tank.

[0020] The beneficial effect of adopting the above further technical solution is that it facilitates the discharge of liquid.

[0021] Furthermore, a valve is provided on the drain pipe.

[0022] The beneficial effect of adopting the above further technical solution is that the opening and closing of the drain pipe is controlled by the valve.

[0023] Furthermore, one end of the drainage pipe between the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank and between the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank are both connected to the sand core.

[0024] The beneficial effect of adopting the above further technical solution is that when the waste liquid in the primary gold separation liquid reaction tank or the secondary gold separation liquid reaction tank is discharged into the waste liquid neutralization reaction tank, the sand core can prevent the silver chloride precipitate in the primary gold separation liquid reaction tank or the secondary gold separation liquid reaction tank from flowing out.

[0025] Furthermore, the other ends of the drainage pipes between the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank and between the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank extend into the waste liquid neutralization reaction tank or are connected to a suction filtration device.

[0026] The beneficial effect of adopting the above further technical solution is that when the waste liquid is discharged or filtered, the silver chloride precipitate in the primary gold separation liquid reaction tank or the secondary gold separation liquid reaction tank is prevented from flowing out.

[0027] Compared with the prior art, the utility model has the following technical effects:

[0028] The fire assaying gold separation liquid graded reaction cleaning device provided by the utility model can realize the graded separation and recovery of silver particles in the primary gold separation liquid and the secondary gold separation liquid, is suitable for large-scale operation, does not generate waste acid, is safe, environmentally friendly, convenient and fast to operate, and greatly improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram showing the structure of a device for cleaning a gold-dividing liquid by a fire assay according to an embodiment of the utility model;

[0030] Figure 2 A schematic structural diagram showing another angle of the device for grading reaction and cleaning of fire assaying gold separation liquid according to an embodiment of the utility model;

[0031] Reference numerals:

[0032] 1. Gold separation liquid storage tank; 2. Primary gold separation liquid reaction tank; 3. Secondary gold separation liquid reaction tank; 4. Waste liquid neutralization reaction tank; 5. Drain pipe; 6. Cylindrical reaction tank; 7. Sand core. DETAILED DESCRIPTION

[0033] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0034] See also Figure 1-2 The utility model provides a fire assaying gold separation liquid graded reaction cleaning device, comprising a gold separation liquid storage tank 1, a primary gold separation liquid reaction tank 2, a secondary gold separation liquid reaction tank 3, and a waste liquid neutralization reaction tank 4;

[0035] The graded reaction cleaning device is a two-stage stepped structure, wherein the gold separation liquid storage tank 1 and the primary gold separation liquid reaction tank 2 are arranged on the first step, and the secondary gold separation liquid reaction tank 3 and the waste liquid neutralization reaction tank 4 are arranged on the second step, and the height of the first step is higher than that of the second step;

[0036] A drainage pipe 5 is used to connect the gold separation liquid storage tank 1 and the primary gold separation liquid reaction tank 2, the gold separation liquid storage tank 1 and the secondary gold separation liquid reaction tank 3, the primary gold separation liquid reaction tank 2 and the waste liquid neutralization reaction tank 4, and the secondary gold separation liquid reaction tank 3 and the waste liquid neutralization reaction tank 4. A valve is provided on the drainage pipe 5 to control the discharge of liquid through the drainage pipe 5.

[0037] The bottoms of the primary gold separation liquid reaction tank 2 and the secondary gold separation liquid reaction tank 3 are both provided with openings, and the openings are provided with sand cores 7, wherein one end of the drainage pipe between the primary gold separation liquid reaction tank 2 and the waste liquid neutralization reaction tank 4, and between the secondary gold separation liquid reaction tank 3 and the waste liquid neutralization reaction tank 4 are connected to the sand core 7, and the other end extends into the waste liquid neutralization reaction tank 4 or is connected to a suction filtration device, so that when the waste liquid in the primary gold separation liquid reaction tank 2 or the secondary gold separation liquid reaction tank 3 is discharged into the waste liquid neutralization reaction tank 4 or when a suction filtration operation is performed, the silver chloride precipitate in the primary gold separation liquid reaction tank 2 or the secondary gold separation liquid reaction tank 3 can be prevented from flowing out.

[0038] The fire assaying gold separation liquid graded reaction cleaning device adopts a two-stage ladder structure, including four relatively independent accommodating spaces, namely, a gold separation liquid storage tank 1, a primary gold separation liquid reaction tank 2, a secondary gold separation liquid reaction tank 3, and a waste liquid neutralization reaction tank 4, wherein the gold separation liquid storage tank 1 is a temporary storage tank for the primary gold separation liquid or the secondary gold separation liquid, and when the primary gold separation liquid reaction tank 2 or the secondary gold separation liquid reaction tank 3 is performing a precipitation reaction or a cleaning operation, the primary gold separation liquid or the secondary gold separation liquid can be temporarily stored in the gold separation liquid storage tank 1;

[0039] When the precipitation reaction or cleaning operation is completed, the primary gold separation liquid or the secondary gold separation liquid is directedly discharged into the primary gold separation liquid reaction tank 2 or the secondary gold separation liquid reaction tank 3 through the drainage pipe 5 between the gold separation liquid storage tank 1 and the primary gold separation liquid reaction tank 2 or the drainage pipe 5 between the gold separation liquid storage tank 1 and the secondary gold separation liquid reaction tank 3 for precipitation reaction;

[0040] After the primary gold separation liquid enters the primary gold separation liquid reaction tank 2, sodium chloride solution is added thereto, and the chloride ions react with the silver ions in the silver nitrate in the primary gold separation liquid to generate silver chloride precipitate. After the precipitation is complete, the valve on the drain pipe 5 is opened to discharge the waste liquid to the waste liquid neutralization reaction tank 4. If the sand core 7 is blocked, the pipe mouth of the drain pipe 5 is connected to the suction filtration equipment by a pump pipe to perform suction filtration operation. After the waste liquid is discharged or the suction filtration is completed, clean water is added to the primary gold separation liquid reaction tank 2 to wash the silver chloride precipitate, and the drainage or suction filtration operation is repeated to achieve the purpose of cleaning the silver chloride precipitate.

[0041] Subsequently, hydrazine hydrate is added to the primary gold separation liquid reaction tank 2 to reduce the silver ions in the silver chloride precipitate to elemental silver, thereby realizing the recovery of silver;

[0042] After the secondary gold separation liquid enters the secondary gold separation liquid reaction tank 3, the same treatment as above is performed;

[0043] When the waste liquid storage volume in the waste liquid neutralization reaction tank 4 reaches a certain level, sodium hydroxide solution is added thereto to neutralize the acidic waste water therein. After being neutralized to neutrality, the waste water can be discharged in compliance with the standards.

[0044] The operation is carried out in a fume hood, and a ventilation duct is provided on the top of the fume hood. The ventilation duct is connected to the vent, and the waste gas generated during the reaction is discharged through the vent via the ventilation duct.

[0045] Optionally, the first gold separation liquid reaction tank 2 and the second gold separation liquid reaction tank 3 are internally cylindrical reaction tanks 6, and a stirrer is arranged in the cylindrical reaction tank 6 to facilitate stirring during the reaction process, accelerate the reaction process, and improve efficiency.

[0046] Optionally, the drain pipes 5 are all arranged at the bottom of the gold separation liquid storage tank 1, the primary gold separation liquid reaction tank 2, and the secondary gold separation liquid reaction tank 3 to facilitate the directional discharge of the liquid.

[0047] The fire assaying gold separation liquid graded reaction cleaning device provided by the utility model can realize the separation and recovery of silver particles in the gold separation liquid, is suitable for large-scale operation, does not generate waste acid, is safe, environmentally friendly, convenient and fast to operate, and greatly improves efficiency.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fire assay gold separation liquid graded reaction cleaning device, characterized in that: It includes a gold separation liquid storage tank, a primary gold separation liquid reaction tank, a secondary gold separation liquid reaction tank, and a waste liquid neutralization reaction tank; The graded reaction cleaning device is a two-stage stepped structure, the gold separation liquid storage tank and the primary gold separation liquid reaction tank are arranged on the first step, the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank are arranged on the second step, and the height of the first step is higher than the height of the second step; The gold separation liquid storage tank and the primary gold separation liquid reaction tank, the gold separation liquid storage tank and the secondary gold separation liquid reaction tank, the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank, and the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank can be connected or disconnected; The bottoms of the primary gold separation liquid reaction tank and the secondary gold separation liquid reaction tank are both provided with openings, and sand cores are provided on the openings.

2. The fire assaying gold separation liquid graded reaction cleaning device according to claim 1, characterized in that: The first gold separation liquid reaction tank and the second gold separation liquid reaction tank are cylindrical reaction tanks.

3. The fire assaying gold separation liquid graded reaction cleaning device according to claim 2, characterized in that: A stirrer is arranged in the cylindrical reaction tank.

4. The fire assaying gold separation liquid graded reaction cleaning device according to claim 1, characterized in that: Drain pipes are arranged between the gold separation liquid storage tank and the primary gold separation liquid reaction tank, between the gold separation liquid storage tank and the secondary gold separation liquid reaction tank, between the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank, and between the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank.

5. The fire assaying gold separation liquid graded reaction cleaning device according to claim 4, characterized in that: The drainage pipe is arranged at the bottom of the gold separation liquid storage tank, the primary gold separation liquid reaction tank and the secondary gold separation liquid reaction tank.

6. The fire assaying gold separation liquid graded reaction cleaning device according to claim 4, characterized in that: The drain pipe is provided with a valve.

7. The fire assaying gold separation liquid graded reaction cleaning device according to claim 4, characterized in that: One end of the drainage pipe between the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank and one end of the drainage pipe between the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank are both connected to the sand core.

8. The fire assaying gold separation liquid graded reaction cleaning device according to claim 7, characterized in that: The other ends of the drainage pipes between the primary gold separation liquid reaction tank and the waste liquid neutralization reaction tank and between the secondary gold separation liquid reaction tank and the waste liquid neutralization reaction tank extend into the waste liquid neutralization reaction tank or are connected to a suction filtration device.

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