Sample mixing structure for fire assaying method detection

Abstract

The utility model discloses a sample mixing structure for fire assaying detection, which comprises a container, the container comprises a mixing cavity and a buffer cavity, the mixing cavity is communicated with the buffer cavity, and the buffer cavity is communicated with the outside. The container further comprises a first sealing assembly used for sealing the mixing cavity and the buffering cavity and a second sealing assembly used for sealing the buffering cavity and the external environment. The sample mixing structure provided by the utility model is special for a sample, the uniformly mixed sample is directly put into the clay crucible along with the uniformly mixing container, no sample powder overflows in the whole uniformly mixing operation, the integrity of the sample is improved to the maximum extent, the steps are simple and easy to master by detection personnel, and the harm of a powder reagent to an operator in the assaying process can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting, and particularly relates to a sample mixing structure for fire assay detection. Background Technique

[0002] Copper anode slime is an important by-product in copper smelting production. Since it enriches precious metals such as gold and silver, rare metals and other valuable metals, and these metals play a very important role in the national economy, extracting these metals from anode slime can obtain great economic benefits. The inspection standards for precious metals such as gold and silver in anode slime samples follow the YS / T 745 series of inspection method standards. Among them, the inspection methods specified in the inspection standards for gold, silver, platinum, and palladium all include fire assay enrichment operations. At the same time, the fire assay method is also an internationally recognized precious metal analysis and testing method. It has the advantages of good sampling representativeness, high method applicability, good enrichment effect, accurate and reliable test results, etc. Compared with other analysis methods, it has irreplaceable advantages.

[0003] Generally, in the experiment of the fire assay method, it is necessary to fully mix the copper anode slime sample with fluxes, reducing agents, oxidizing agents, desulfurizing agents, collectors, etc., so as to ensure that the precious metals in the sample are fully captured. All kinds of reagents used are powder reagents, and the mixing operation must be carried out under ventilation. However, in the prior art, the sample mixing method is usually "single-cup" open stirring and mixing or reagent bottle mixing and transferring. There is a risk of micro-sample powder drifting during the mixing and transferring process, which affects the sample integrity; secondly, in the experiment, the mixing degree of the sample and the reagent is often different due to different personal stirring techniques and stirring times, which affects the subsequent experiment; in addition, when mixing one by one in a single cup, there is a risk of sample contamination due to untimely cleaning of the mixing and stirring tools. Therefore, it is necessary to find a fast and airtight sample mixing and transferring method to ensure the sample integrity in the inspection of anode slime samples. Content of the Utility Model

[0004] In order to solve the defects in the prior art that when the copper anode slime sample is detected by the fire assay method, the powder reagent is easy to drift during the mixing and transferring process with the copper anode slime sample, and it is difficult to ensure the sample integrity, the utility model provides a sample mixing structure for fire assay detection.

[0005] The technical solution adopted by the utility model is: a sample mixing structure for fire assay detection, including a container, the container includes a mixing chamber and a buffer chamber, the mixing chamber is communicated with the buffer chamber, the buffer chamber is communicated with the outside, and the container further includes a first sealing component for sealing the mixing chamber and the buffer chamber and a second sealing component for sealing the buffer chamber and the external environment.

[0006] Furthermore, the container is flexible.

[0007] Preferably, the material of the container is PE plastic.

[0008] Furthermore, the first sealing component and the second sealing component are any one of a ligature cord sealing structure, a zipper sealing structure, an adhesive sealing structure, and a zip-lock sealing structure.

[0009] Furthermore, the container is in a bag shape, and the thickness of the container is 0.2 mm.

[0010] Furthermore, the buffer chamber is arranged on one side of the mixing chamber, and the cross-section of the buffer chamber is smaller than that of the mixing chamber.

[0011] Compared with the prior art, the sample mixing structure proposed by the present utility model is dedicated to specific samples. After mixing, the sample is directly put into a clay crucible together with the mixing container. During the whole mixing operation, no sample powder overflows, which maximally improves the integrity of the sample. It saves experimental time and reduces the labor cost in the laboratory; the experimental steps are simple, easy for the testing personnel to master, and applicable to the detection of batch samples with good precision; in the subsequent slag-making experiment, since the composition of the mixing container is simple, it will not affect the experimental operation after melting with the increase of temperature and has no influence on the internal components of the assay furnace. This application can improve the accuracy in the fire assay of anode slime and reduce the harm of powder reagents to the operators during the assay process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of the first embodiment of the sample mixing structure in the present utility model;

[0014] Figure 2 It is a schematic structural diagram of the second embodiment of the sample mixing structure in the present utility model.

[0015] The main reference numerals in this application are:

[0016] 1. Buffer chamber; 2. Mixing chamber; 3. First sealing component; 4. Second sealing component. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, 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 only used to explain the present utility model and are not used to limit the present utility model.

[0018] In the following description, reference is made to the accompanying drawings, which describe several embodiments of the present application. It should be understood that other embodiments may also be used, and mechanical composition, structure, electrical and operational changes may be made without departing from the spirit and scope of the present disclosure. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is only defined by the claims of the published patent. The terms used herein are only for describing specific embodiments and are not intended to limit the present application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "beneath", "lower part", "above", "upper part", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0019] The present application provides a sample mixing structure for fire assay detection. The main structure of the sample mixing structure includes a container, which is divided into two parts, namely a mixing chamber 2 and a buffer chamber 1. The volume of the mixing chamber 2 is larger than that of the buffer chamber 1. One side of the buffer chamber 1 is connected to the mixing chamber 2, and the other side of the buffer chamber 1 is an opening communicating with the external environment. The mixing chamber 2 and the buffer chamber 1 are separated by a first sealing component 3, and the first sealing component 3 controls the on-off between the mixing chamber 2 and the buffer chamber 1. A second sealing component 4 is provided at the opening of the buffer chamber 1 communicating with the external environment to control the on-off between the buffer chamber 1 and the outside. Both the first sealing component 3 and the second sealing component 4 are switchable, so that any sealing component can be freely opened, ensuring that the sample is not lost during the mixing process. Moreover, by providing the buffer chamber 1 on the mixing chamber 2 and discharging the internal gas through the buffer chamber 1, the discharge of the internal gas in the container is more controllable, avoiding the accidental discharge of the sample or powder.

[0020] As Figure 1 shown, in a preferred embodiment, the container is made of a flexible material, such as PE plastic, polyurethane, polyester fiber, etc. Among them, PE plastic is a relatively better choice. Using PE plastic as the material of the sample mixing structure, the PE plastic bag will not affect the final detection during the later melting stage, and will not affect the internal components of the assay furnace either. It can improve the accuracy in the fire assay of anode slime and reduce the harm of powder reagents to operators during the assay process.

[0021] In addition, the first sealing component 3 and the second sealing component 4 can be any one of a ligature rope sealing structure, a zipper sealing structure, an adhesive sealing structure, and a clip chain sealing structure. The optional sealing structures include but are not limited to a ligature rope sealing structure, a zipper sealing structure, an adhesive sealing structure, and a clip chain sealing structure. Among them, the ligature rope sealing structure uses rope bundling as a sealing structure, which is convenient and fast to use and is convenient for ligature sealing operations; the zipper sealing structure uses a zipper or a nylon chain to interlock the mouth to form a seal; the adhesive sealing uses tape or glue coated on the inside of the mouth for adhesion sealing; and the clip chain sealing structure is also called a buckle seal, and sealing buckles are set on both sides of the mouth, and the sealing is performed by pressing. The above sealing structures are all optional sealing methods. The clip chain sealing structure is relatively more convenient and simple in structure, and can achieve a better sealing structure, and has good sealing properties to prevent powder from floating.

[0022] Preferably, the container is in a bag shape, and the thickness of the container is 0.2 mm.

[0023] The method of using the sample mixing structure is as follows: weigh the sample, lead oxide, anhydrous sodium carbonate, silicon dioxide, borax, and starch in a container according to the requirements of the YS / T 745.2 standard, operate the first sealing component 3 and the second sealing component 4 to seal the container, and then turn and shake it evenly to mix the powder and the sample evenly. The sealing method can well prevent the powder from scattering, and at the same time, the mixing is more thorough and uniform, ensuring the subsequent experiments. After mixing, connect the sample mixing structure together and place it at the bottom of the clay crucible, cover it with about 10mm thick sodium chloride, and conduct subsequent experiments according to the experimental steps 6.4.2 to 6.5.2 in YS / T 745.2.

[0024] It should be noted that in actual operation, the following operation methods can be selected: after the sample and then the powder are loaded into the sample mixing structure, the first sealing component 3 can be sealed first, and then the gas in the buffer chamber 1 can be squeezed out, and finally the second sealing component 4 can be closed to vacuum the buffer chamber 1; after shaking and turning, the sample and the powder are fully mixed, and then the first sealing component 3 is opened to squeeze the gas in the mixing chamber 2 into the buffer chamber 1, and finally discharged from the buffer chamber 1 to the outside, so as to avoid the problem of suddenly opening the mixing chamber 2, generating negative pressure and causing the powder to float out, and exhausting the mixing chamber 2 can avoid the risk of rapid rupture of the sample mixing structure due to gas expansion under high temperature and the sample bouncing out.

[0025] Furthermore, the buffer chamber 1 is arranged at one side of the mixing chamber 2, and the cross section of the buffer chamber 1 is smaller than that of the mixing chamber 2, so as to reduce the exhaust volume and thereby prevent the powder from being carried out as much as possible during the exhaust process.

[0026] like Figure 2As shown, in other embodiments, the sample mixing structure may also adopt non-flexible materials. For example, the mixing chamber 2 may be a box or a can made of paper or hard plastic, and the material has a certain hardness. The buffer chamber 1 can be made of flexible material. Both the first sealing component 3 and the second sealing component 4 can be arranged on the buffer chamber 1 for sealing control to avoid sample loss. By setting the buffer chamber 1 for exhaust operation, a certain buffer area is set when discharging the internal gas, making the exhaust process more controllable and avoiding mis-discharging the sample or powder.

[0027] The specific operation steps and necessary materials are as follows:

[0028] 1. Method summary:

[0029] Weigh solid powder reagents such as samples, fluxes, reducing agents, oxidizing agents, desulfurizing agents, and collectors as required, and add them to special containers for sealing and mixing respectively. After mixing, place the materials together with the containers at the bottom of the crucible, and normally cover with sodium chloride as the covering agent. Place the crucible in the assay electric furnace for melting to capture gold and silver with lead to form a lead button. Cupel the lead button to obtain a gold-silver alloy pellet, and determine the mass of the alloy pellet by the weighing method. Utilize the property that gold is insoluble in nitric acid to separate gold from silver and trace impurities remaining in the alloy pellet. Determine the mass of impurities in the gold parting solution and the gold pellet by inductively coupled plasma emission spectrometry. Calculate the mass of gold and silver respectively.

[0030] 2. Reagents:

[0031] 2.1 Anhydrous sodium carbonate, industrial pure, in powder form.

[0032] 2.2 Lead oxide, in powder form.

[0033] 2.3 Silicon dioxide, industrial pure, in powder form.

[0034] 2.4 Borax, industrial pure, in powder form.

[0035] 2.5 Sodium chloride, industrial pure, in powder form.

[0036] 2.6 Starch, in powder form.

[0037] 2.7 Other reagents specified in the YS / T 745.2 standard method

[0038] 3. Equipment and consumables

[0039] 3.1 One-ten-thousandth balance.

[0040] 3.2 Assay electric furnace.

[0041] 3.3 Assay crucible: The material is refractory clay, and the volume is about 300 ml.

[0042] 3.4 Special container

[0043] 3.5 Other equipment and consumables specified in the standard method of YS / T 745.2

[0044] 4. Operating procedures

[0045] Weigh the sample, lead oxide, anhydrous sodium carbonate, silicon dioxide, borax, and starch into a container according to the requirements in the YS / T 745.2 standard, seal it, turn it over, and shake it evenly. After mixing evenly, place it together with the mixing bag at the bottom of the clay crucible and cover it with about 10 mm thick sodium chloride. Conduct subsequent experiments according to the experimental steps in 6.4.2 - 6.5.2 of YS / T 745.2

[0046] Through experiments, combined with Table 1, it can be seen that by using the continuous mixing operation in the present utility model, there is no overflow of sample powder, which saves experimental time and reduces the labor cost in the laboratory; the experimental steps are simple and easy for the testing personnel to master, and the integrity of the sample is improved

[0047] Table 1. Mixing detection data table under each structure

[0048]

[0049] In summary, the mixing container in this application is dedicated to a specific sample. After mixing, the sample is directly put into the clay crucible with the mixing container. There is no overflow of sample powder during the entire mixing operation, which maximally improves the integrity of the sample. It saves experimental time and reduces the labor cost in the laboratory; the experimental steps are simple and easy for the testing personnel to master, and it is applicable to the detection of batch samples with good precision; in the subsequent slag-making experiment, the composition of the mixing container is simple and melts as the temperature rises, which does not affect the experimental operation and has no impact on the internal components of the assay furnace. This application can improve the accuracy in the fire assay of anode slime and reduce the harm of powder reagents to the operators during the assay process

[0050] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model

Claims

1. A sample mixing structure for fire assay detection, characterized in that, It includes a container, which comprises a mixing chamber and a buffer chamber. The mixing chamber is in communication with the buffer chamber, and the buffer chamber is in communication with the outside. Moreover, the container further includes a first sealing component for sealing the mixing chamber and the buffer chamber, and a second sealing component for sealing the buffer chamber and the external environment.

2. The sample mixing structure according to claim 1, characterized in that The container is flexible.

3. The sample mixing structure according to claim 2, wherein, The material of the container is PE plastic.

4. The sample mixing structure according to claim 3, wherein, The first sealing component and the second sealing component are any one of a ligature cord sealing structure, a zipper sealing structure, an adhesive sealing structure, and a zip-lock bag sealing structure.

5. The sample mixing structure according to claim 2, characterized in that The container is in the shape of a bag, and the thickness of the container is 0.2 mm.

6. The sample mixing structure according to claim 2, wherein, The buffer chamber is provided on one side of the mixing chamber, and the cross-section of the buffer chamber is smaller than that of the mixing chamber.

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