Aluminum alloy oxide content detection device and detection method

Abstract

The present application relates to oxide content detection technical field, specifically, it relates to a kind of aluminium alloy oxide content detection equipment and detection method.The aluminium alloy oxide content detection equipment provided by the present application includes: reaction device, with sealed reaction cavity, for the aluminium alloy to be detected and hydrochloric acid reaction;Heating device is used to heat the reaction device after reaction, so that water in the reaction device is heated and evaporated;Condensing device is communicated with the reaction device, for the gaseous water from the reaction device is condensed into liquid water;Collecting device is communicated with the condensing device, for collecting water and hydrogen chloride from the condensing device.The aluminium alloy oxide content detection equipment and detection method provided by the present application can obtain the oxide content in the aluminium alloy to be detected, and the quality of aluminium alloy waste is accurately determined.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oxide content detection, in particular to an aluminum alloy oxide content detection device and method. BACKGROUND

[0002] In the industrial production process, the recycling of aluminum alloy waste after classification is often involved, and the quality of the waste is often judged by the impurity content in the aluminum alloy, that is, the oxide content. Therefore, the measurement of the oxide content in the aluminum alloy is of great significance to the processing and cost detection of the aluminum alloy. However, there is currently a lack of equipment for detecting the oxide content in the aluminum alloy, which makes it difficult to determine the quality of the aluminum alloy waste. SUMMARY

[0003] The present application aims to provide an aluminum alloy oxide content detection device and method to alleviate the technical problem of being difficult to determine the quality of the aluminum alloy waste in the prior art.

[0004] The aluminum alloy oxide content detection device provided by the present application comprises:

[0005] A reaction device having a sealed reaction chamber for reacting the aluminum alloy to be detected with hydrochloric acid;

[0006] A heating device for heating the reaction device after the reaction to evaporate the water in the reaction device;

[0007] A condensing device in communication with the reaction device for condensing gaseous water from the reaction device into liquid water;

[0008] A collecting device in communication with the condensing device for collecting water and hydrogen chloride from the condensing device.

[0009] Preferably, as an implementable manner, the aluminum alloy oxide content detection device further comprises a solution tank for containing hydrochloric acid, the solution tank being in communication with the reaction device and capable of injecting hydrochloric acid into the reaction device; a first valve is arranged between the solution tank and the reaction device.

[0010] Preferably, as an implementable manner, a scale is arranged on the solution tank.

[0011] Preferably, as an implementable manner, the collecting device comprises a liquid collecting tank and a dryer, the liquid collecting tank being in communication with the condensing device for collecting hydrochloric acid solution from the condensing device; the dryer is provided with a drying agent, and the dryer is in communication with the upper part of the liquid collecting tank through an air pipe for collecting water vapor.

[0012] Preferably, as an implementable mode, the drier and the condensing device are detachably connected with the liquid collecting tank.

[0013] Preferably, as an implementable mode, the condensing device comprises a condensing tube, the liquid collecting tank is provided with a liquid inlet and a gas outlet, the upper end of the condensing tube is communicated with the upper part of the reaction device, and the lower end of the condensing tube is communicated with the liquid collecting tank; the condensing tube is plugged and fitted with the liquid inlet through a first sealing plug, and the gas tube is plugged and fitted with the gas outlet through a second sealing plug.

[0014] Preferably, as an implementable mode, the heating device comprises a heating element for heating the reaction device.

[0015] The heating device further comprises a temperature adjusting switch electrically connected with the heating element, for adjusting the heating temperature of the heating element; and / or the heating element is installed at the bottom of the reaction device.

[0016] Preferably, as an implementable mode, the reaction device is provided with a material inlet for placing the aluminum alloy to be detected, a box door is installed at the material inlet, the box door is provided with a second valve capable of being switched between a locked state and an unlocked state.

[0017] The second valve is switched to the locked state to lock the box door in the closed state, and the second valve is switched to the unlocked state to open the box door.

[0018] The present application provides an aluminum alloy oxide content detection method, which comprises:

[0019] A certain mass of aluminum alloy to be detected is placed in a sealed reaction cavity of a reaction device;

[0020] A certain concentration of sufficient hydrochloric acid is injected into the sealed reaction cavity, so that the aluminum alloy to be detected and the hydrochloric acid are fully reacted;

[0021] After the reaction of the aluminum alloy to be detected and the hydrochloric acid is completed, the water and hydrogen chloride in the reaction device are separated and extracted into a collecting device through distillation;

[0022] According to the mass of water in the collecting device, the mass of water in the hydrochloric acid injected into the sealed reaction cavity and the mass of the aluminum alloy to be detected, the oxide content in the aluminum alloy is calculated. Preferably, as an implementable mode,

[0023] Preferably, as an implementable mode, the method further comprises:

[0024] The mass of the collecting device's liquid collecting tank before and after the reaction is obtained, and the mass of the liquid collecting tank after the reaction is subtracted from the mass of the liquid collecting tank before the reaction to obtain the mass of the hydrochloric acid solution in the liquid collecting tank;

[0025] The concentration of the hydrochloric acid solution in the liquid collecting tank is calibrated, and the mass of the water in the liquid collecting tank is calculated according to the calibrated concentration of the hydrochloric acid solution and the mass of the hydrochloric acid solution in the liquid collecting tank;

[0026] The mass of the collecting device's dryer before and after the reaction is obtained, and the mass of the dryer after the reaction is subtracted from the mass of the dryer before the reaction to obtain the mass of the water in the dryer;

[0027] The mass of the water in the liquid collecting tank and the mass of the water in the dryer are summed to obtain the mass of the water in the collecting device.

[0028] Compared with the prior art, the beneficial effects of the present application are:

[0029] The aluminum alloy oxide content detection equipment and detection method provided by the present application utilize the chemical reaction characteristics of the main oxide Al2O3 in the aluminum alloy and hydrochloric acid, and through analysis and calculation of the mass of the water in the collecting device and the mass of the water in the hydrochloric acid injected into the reaction device, the mass of the water generated by the reaction can be obtained, and then the amount of the oxide participating in the reaction can be determined by the mass of the water generated by the reaction, and the oxide content in the aluminum alloy to be detected can be further obtained by calculation, realizing accurate determination of the quality of aluminum alloy waste. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0031] Figure 1 A perspective structural schematic diagram of the aluminum alloy oxide content detection equipment provided by the embodiment of the present application;

[0032] Figure 2 A cross-sectional structural schematic diagram of the aluminum alloy oxide content detection equipment provided by the embodiment of the present application;

[0033] Figure 3 A schematic flowchart of the aluminum alloy oxide content detection method provided by the embodiment of the present application;

[0034] Figure 4 A schematic flowchart of the method for obtaining the mass of the water in the collecting device provided by the embodiment of the present application.

[0035] Reference numerals:

[0036] 110 - reaction device; 111 - tank door; 112 - handle; 113 - fourth valve;

[0037] 121 - heating device; 122 - temperature regulating switch;

[0038] 130 - condensing device; 131 - condensing tube; 132 - fifth valve;

[0039] 140 - collecting device; 141 - liquid collecting tank; 142 - dryer; 143 - gas pipe; 144 - first sealing plug; 145 - second sealing plug;

[0040] 150 - solution tank; 151 - first valve; 152 - third valve; 153 - conduit. DETAILED DESCRIPTION

[0041] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The present application will be further described in detail below with reference to specific examples and in conjunction with the accompanying drawings.

[0044] Referring to Figure 1 and Figure 2 The present embodiment provides an aluminum alloy oxide content detection device, which comprises:

[0045] The reaction device 110 has a sealed reaction cavity for reaction of the aluminum alloy to be detected with hydrochloric acid;

[0046] The heating device is used to heat the reaction device 110 after the reaction is completed, so that the water in the reaction device 110 is heated and vaporized;

[0047] The condensing device 130 communicates with the reaction device and is used to condense the gaseous water from the reaction device into liquid water;

[0048] A collection device 140 is in communication with the condensing device 130 for collecting water and hydrogen chloride from the condensing device 130.

[0049] In the detection of the oxide content in the aluminum alloy, the aluminum alloy to be detected is cleaned and weighed (ultrasonic cleaning can be used to clean the aluminum alloy to be detected, removing surface dust, oil stains and other impurities), then the aluminum alloy to be detected is placed in the sealed reaction chamber of the reaction device 110, and a sufficient amount of hydrochloric acid is added to the sealed reaction chamber (the volume / mass of the added hydrochloric acid is recorded), so that the aluminum alloy to be detected reacts with the hydrochloric acid in the reaction device 110; the main oxide component in the aluminum alloy to be detected is Al2O3 (alumina), which reacts with hydrochloric acid (HCl) to produce water (reaction equation: Al2O3+6HCl=2AlCl3+3H2O), while other components such as Al (aluminum), Mg2Si (magnesium silicide), Si (silicon) and hydrochloric acid do not generate water, but generate salt solution and H2 (hydrogen). For example, the reaction equation of Al and hydrochloric acid is: 2Al+6HCl=2AlCl3+3H2↑). After the reaction of the aluminum alloy and the hydrochloric acid is completed, the heating device is started to heat the reaction device 110, so that the water in the reaction device 110 is heated and evaporated, at the same time, the HCl gas dissolved in the water is also precipitated, the water vapor and HCl gas can flow into the condensing device 130, while the other components in the reaction device 110 remain in the reaction device 110; under the condensing action of the condensing device 130, the water vapor will condense into liquid water, and the HCl gas will dissolve in the water to form a hydrochloric acid solution, which is equivalent to separating and extracting the water and HCl in the reaction device 110 through distillation into the collection device 140, and using the collection device 140 to collect water and HCl from the condensing device 130. When the liquid in the reaction device 110 is completely evaporated, the heating device is stopped, and the mass of the water in the collection device 140 is obtained.

[0050] Since the metals and metal compounds without oxygen element (such as Al, Mg2Si, etc.) in the aluminum alloy do not react with H- in hydrochloric acid to generate water, while the hydrochloric acid reacts with the oxide (such as Al2O3) to generate water, the water generated after the reaction is condensed and collected. The mass m of the water in the collection device 140 is subtracted from the mass m1 of the water in the hydrochloric acid added to the reaction device 110, and the mass m2 of the water generated by the reaction of the aluminum alloy and the hydrochloric acid can be calculated. According to the reaction equation of Al2O3 and hydrochloric acid Al2O3 + 6HCl = 2AlCl3 + 3H2O, the mass Y of Al2O3 participating in the reaction can be calculated when the water with the mass m2 is generated. Since the content of other oxides in the aluminum alloy is very small and also reacts with the hydrochloric acid to generate water, the other oxides can be regarded as Al2O3, that is, the mass Y of Al2O3 participating in the reaction calculated is basically equal to the mass of the oxides in the aluminum alloy. After the mass Y of the oxides obtained is divided by the total mass X of the aluminum alloy to be detected and multiplied by 100%, the content of the oxides in the aluminum alloy to be detected can be obtained

[0051] Therefore, the aluminum alloy oxide content detection device provided in the embodiment utilizes the chemical reaction characteristics of the main oxide Al2O3 in the aluminum alloy and the hydrochloric acid. The mass of the water in the collection device, the mass of the water in the hydrochloric acid injected into the reaction device, and the mass of the water generated by the reaction can be calculated. Then, the amount of the oxide participating in the reaction can be determined by the mass of the water generated by the reaction, and the content of the oxide in the aluminum alloy to be detected can be further obtained by calculation, so that the quality of the aluminum alloy waste can be accurately determined.

[0052] Preferably, a solution tank 150 can be additionally provided to accommodate the hydrochloric acid. The solution tank 150 is in communication with the reaction device 110, so that the hydrochloric acid in the solution tank 150 can be injected into the reaction device 110. A first valve 151 is arranged between the solution tank 150 and the reaction device 110. Before detection, the first valve 151 is closed, and a sufficient amount of hydrochloric acid is pre-added to the solution tank 150. After the aluminum alloy to be detected is placed in the reaction device 110, the first valve 151 can be opened to inject the hydrochloric acid in the solution tank 150 into the reaction device 110, so as to realize the chemical reaction of the aluminum alloy to be detected and the hydrochloric acid in the reaction device 110, and ensure the sealing of the reaction device 110 during the reaction, thereby improving the detection accuracy. The solution tank 150 and the reaction device 110 can be in communication through a conduit 153, and the first valve 151 can be installed on the conduit 153.

[0053] It should be noted that before the hydrochloric acid is injected, the approximate amount of hydrochloric acid required can be determined in advance according to the amount of the aluminum alloy to be detected; after the first valve 151 is opened, the first valve 151 is closed when the hydrochloric acid in the solution tank 150 is reduced by a corresponding amount, the reaction in the reaction device 110 is observed, and after the reaction is completed, the first valve 151 is opened again. If there is still a reaction, a certain amount of hydrochloric acid is continuously injected until the aluminum alloy to be detected is completely reacted and no bubbles are generated. Therefore, the first valve 151 can be adjusted according to the actual demand to adjust the amount of hydrochloric acid injected into the reaction device 110, which is beneficial to saving hydrochloric acid and reducing the amount of NaOH (sodium hydroxide) consumed when calibrating the hydrochloric acid in the collection device 140 later.

[0054] Preferably, a scale can be provided on the solution tank 150. After the hydrochloric acid is added to the solution tank 150, the initial volume of the hydrochloric acid in the solution tank 150 can be recorded according to the scale on the solution tank 150 corresponding to the liquid level of the hydrochloric acid. After the reaction is completed, the residual volume of the hydrochloric acid in the solution tank 150 is recorded again according to the scale on the solution tank 150 corresponding to the liquid level of the hydrochloric acid. The initial volume and the residual volume are subtracted to calculate the volume V of the hydrochloric acid added to the reaction device 110. According to the mass concentration c1 of the hydrochloric acid, the density p of the hydrochloric acid can be determined, and then the mass M of the hydrochloric acid added to the reaction device 110 can be converted to V* p, and then the mass m1 of water in the hydrochloric acid added to the reaction device 110 can be calculated as M*c1.

[0055] A first drainage port can be provided at the bottom of the solution tank 150, and a third valve 152 can be installed at the first drainage port. Before the hydrochloric acid is added to the solution tank 150, the third valve 152 is closed. After the reaction is completed, the third valve 152 is opened to allow the excess hydrochloric acid to be discharged through the first drainage port, which is more convenient to use.

[0056] In the specific structure of the collection device 140, a liquid collecting tank 141 and a dryer 142 can be provided. The liquid collecting tank 141 is in communication with the condensing device 130, so that the hydrochloric acid solution formed after the gaseous water and HCl gas are condensed by the condensing device 130 can be stored in the liquid collecting tank 141. A drying agent is provided in the dryer 142, and the dryer 142 is in communication with the upper part of the liquid collecting tank 141 through an air pipe 143, so that the dryer 142 can absorb part of the uncontrollable moisture, thereby improving the absorption sufficiency of the collection device 140 for water and HCl. The dryer 142 can include a U-shaped tube filled with anhydrous calcium chloride, which can achieve absorption of uncontrollable moisture.

[0057] Preferably, the drier 142 and the condensing device 130 are connected to the liquid collecting tank 141 in a detachable manner, so that the drier 142 and the liquid collecting tank 141 can be weighed separately, and the mass of the liquid collecting tank 141 before and after the reaction can be obtained by weighing. The mass of the liquid collecting tank 141 after the reaction is subtracted from the mass of the empty liquid collecting tank 141, and the mass a of the hydrochloric acid solution in the liquid collecting tank 141 can be calculated. The concentration c2 of the hydrochloric acid solution in the liquid collecting tank 141 can be calibrated by using phenolphthalein and NaOH, and then the mass m1' of water in the hydrochloric acid solution in the liquid collecting tank 141 can be calculated, i.e. m1' = a*(1-c2). If a certain amount of water is pre-stored in the liquid collecting tank 141, the corresponding mass of water needs to be subtracted. The mass m2' of water absorbed by the drier 142 can be calculated by subtracting the mass of the drier 142 before the reaction from the mass of the drier 142 after the reaction. The total mass m' of water collected by the collecting device 140 from the reaction device 110 after the reaction can be calculated by adding the mass m1' of water in the liquid collecting tank 141 and the mass m2' of water absorbed by the drier 142, i.e. m' = m1' + m2'. That is, the mass m2 of water generated by the reaction of the aluminum alloy and the hydrochloric acid is m2 = m' - m1 = m1' + m2' - m1 = a*(1-c2) + m2' - M*c1.

[0058] In the specific structure of the condensing device 130, a condensing pipe 131 can be provided, and a liquid inlet and a gas outlet can be formed on the liquid collecting tank 141. The upper end of the condensing pipe 131 is connected to the upper part of the reaction device 110, and the lower end of the condensing pipe 131 extends into the liquid collecting tank 141, so that the water vapor and HCl gas generated by the reaction in the reaction device 110 can be condensed into a hydrochloric acid solution in the condensing pipe 131 and then flow into the liquid collecting tank 141. The condensing pipe 131 is inserted and connected to the liquid inlet through a first sealing plug 144, and the gas pipe 143 is inserted and connected to the gas outlet through a second sealing plug 145. When the drier 142 needs to be removed for weighing, the gas pipe 143 can be pulled out of the second sealing plug 145. When the liquid collecting tank 141 needs to be removed for weighing, the gas pipe 143 can be pulled out of the second sealing plug 145, and the condensing pipe 131 can be pulled out of the first sealing plug 144. In addition, the first sealing plug 144 and the second sealing plug 145 can also ensure the sealing performance of the liquid collecting tank 141.

[0059] Preferably, liquid water can be pre-stored in the liquid collecting tank 141, and the lower end of the condensing pipe 131 can extend below the liquid level of the liquid collecting tank 141. When the HCl gas flows into the liquid collecting tank 141 through the condensing pipe 131, it can be dissolved in the water in the liquid collecting tank 141, so that the HCl can be fully collected.

[0060] A fifth valve 132 can be installed at the upper end of the condensing pipe 131, and the fifth valve 132 is used to control the connection and disconnection between the reaction device 110 and the condensing device 130.

[0061] The condensing pipe 131 can be arranged in a serpentine structure with reciprocating turns or spirals, so that the surface area of the condensing pipe 131 can be increased in a limited space, and thus the condensing effect on the water vapor entering the condensing pipe 131 can be improved.

[0062] In the specific structure of the heating device, a heating element 121 can be arranged to heat the reaction device 110 by using the heating element 121. A temperature regulating switch 122 can also be arranged in the heating device and electrically connected to the heating element 121, so that the temperature regulating switch 122 is used to adjust the heating temperature of the heating element 121. For example, when the reaction is slow, the temperature regulating switch 122 can be controlled to adjust the heating element 121 to a lower heating temperature, so that the heating element 121 can assist the reaction device 110 to increase the temperature and improve the reaction speed of the aluminum alloy and hydrochloric acid. After the reaction is completed, the temperature regulating switch 122 can be controlled to adjust the heating element 121 to a heating temperature of 100-120℃, so that the water can be heated and evaporated.

[0063] A material inlet for placing the aluminum alloy to be tested can be arranged on the reaction device 110, and a box door 111 is arranged at the material inlet. A second valve is arranged on the box door 111, and the second valve can be switched between a locked state and an unlocked state. After the box door 111 is closed, the second valve can be switched to the locked state to lock the box door 111 in the closed state, so as to ensure the sealed environment in the reaction device 110. When the box door 111 needs to be opened, the second valve can be switched to the unlocked state, so that the box door 111 is no longer locked and can be freely opened. After the box door 111 is opened, the aluminum alloy to be tested can be placed into the reaction device 110 through the material inlet, and the feeding is convenient. The second valve can be connected to a handle 112, and the state of the second valve can be switched by operating the handle 112.

[0064] A second liquid outlet can be arranged at the bottom of the reaction device 110, and a fourth valve 113 is arranged at the second liquid outlet. The fourth valve 113 is arranged in a normally closed state. When the reaction device 110 needs to be cleaned, the fourth valve 113 can be opened, so that the sewage can be discharged through the second liquid outlet without pouring, and the cleaning is more convenient.

[0065] The aluminum alloy oxide content detection equipment can be used repeatedly, and has strong applicability for detecting the oxide in the aluminum alloy.

[0066] Figure 3 A schematic flowchart of an aluminum alloy oxide content detection method provided by an embodiment of the present application is provided. The method includes:

[0067] S202, a certain mass of the aluminum alloy to be detected is placed in a closed reaction cavity of a reaction device;

[0068] S204, a certain concentration of sufficient hydrochloric acid is injected into the closed reaction cavity of the reaction device, so that the aluminum alloy to be detected and the hydrochloric acid fully react;

[0069] S206, after the reaction of the aluminum alloy to be detected and the hydrochloric acid is completed, the water and hydrogen chloride in the reaction device are separated by distillation and extracted into a collection device;

[0070] S208, according to the mass of water in the collection device, the mass of water in the hydrochloric acid injected into the reaction device, and the mass of the aluminum alloy to be detected, the content of the oxide in the aluminum alloy is calculated.

[0071] The aluminum alloy oxide content detection method provided in the embodiment utilizes the chemical reaction characteristics of the main oxide Al2O3 in the aluminum alloy and the hydrochloric acid. Through the analysis and calculation of the mass of water in the collection device and the mass of water in the hydrochloric acid injected into the reaction device, the mass of the water generated by the reaction can be obtained. Then, the amount of the oxide participating in the reaction can be determined through the mass of the water generated by the reaction, and the content of the oxide in the aluminum alloy to be detected can be further obtained by calculation, thereby realizing the accurate determination of the quality of the aluminum alloy waste.

[0072] Figure 4 The schematic flowchart of the method for obtaining the mass of water in the collection device provided in an embodiment of the present application, the above method comprises:

[0073] S302, the mass of the liquid collecting tank of the collection device before and after the reaction is obtained, and the mass of the hydrochloric acid solution in the liquid collecting tank is obtained by subtracting the mass of the liquid collecting tank after the reaction from the mass of the liquid collecting tank before the reaction; wherein the liquid collecting pipe can collect the hydrochloric acid solution formed after distillation, and the mass of the liquid collecting pipe before and after the reaction can be obtained by separately removing and weighing the liquid collecting pipe.

[0074] S304, the concentration of the hydrochloric acid solution in the liquid collecting tank is calibrated, and the mass of water in the liquid collecting tank is calculated according to the calibrated concentration of the hydrochloric acid solution and the mass of the hydrochloric acid solution in the liquid collecting tank; specifically, the mass of water in the liquid collecting tank can be calculated by utilizing the relationship between the total mass of the solution, the water content and the concentration.

[0075] S306, the mass of the desiccator of the collection device before and after the reaction is obtained, and the mass of water in the desiccator is obtained by subtracting the mass of the desiccator before the reaction from the mass of the desiccator after the reaction; wherein the desiccator can collect uncontrollable moisture, and the mass of the desiccator before and after the reaction can be obtained by separately removing and weighing the desiccator.

[0076] S308, the mass of water in the liquid collecting tank and the mass of water in the desiccator are summed to obtain the mass of water in the collection device.

[0077] Specifically, the following method can be used to detect the oxide content in the aluminum alloy:

[0078] First, take a piece of aluminum alloy, denoted as sample 1, and clean it with ultrasonic waves to remove dirt, oil stains and other impurities on the surface. Then, weigh the sample 1 and record the weight as X;

[0079] Open the box door of the reaction device and put the aluminum alloy into the reaction device. Close the box door of the reaction device;

[0080] Close the first valve and the third valve, and add 20% concentration hydrochloric acid solution to the solution tank. Record the scale corresponding to the hydrochloric acid liquid level in the solution tank as h1;

[0081] Add 100ml water to the collection device, and extend the condenser tube of the condensing device under water in the collection device to collect the HCl gas generated by the reaction;

[0082] Close the fourth valve and open the first valve. Add enough hydrochloric acid solution to the reaction device. Close the first valve and read the scale of the solution tank as h2;

[0083] Calculate the volume V of hydrochloric acid added to the reaction device by the formula V = h1-h2. Calculate the mass M of hydrochloric acid added to the reaction device by the formula M = V*ρ. Calculate the water content m1 in the hydrochloric acid added to the reaction device by the formula m1 = M*20%. Where ρ represents the density of 20% concentration hydrochloric acid, which is 1.098 kg / L;

[0084] Open the fifth valve connected between the reaction device and the condensing device;

[0085] Wait for the reaction in the reaction device to be complete without generating bubbles;

[0086] Start the heating device at the bottom of the reaction device to heat the inside of the reaction device at a temperature of 100-120°C to evaporate the water in the reaction device;

[0087] Condense the vapor by the condensing device;

[0088] Collect the condensed liquid by the liquid collection tank. Weigh the empty liquid collection tank before the reaction and record the mass as Y1. Weigh the liquid collection tank containing the hydrochloric acid solution after the complete reaction and record the mass as Y2. Calculate the mass a of the hydrochloric acid solution in the liquid collection tank;

[0089] Calculate the concentration c2 of the hydrochloric acid solution in the liquid collection tank by the phenolphthalein and NaOH calibration method. Calculate the total mass m1' of water in the hydrochloric acid solution in the liquid collection tank by the concentration and the solution mass, i.e. m1' = a*(1-c2);

[0090] The anhydrous calcium chloride in the dryer before the reaction is weighed and recorded as Z1. The dryer absorbs some of the uncontrollable moisture. After the reaction is completed, the dryer is weighed again and recorded as Z2. The mass of water absorbed by the dryer is m2′=Z2-Z1.

[0091] The total mass m′ of water collected from the reaction apparatus by the collection device after the reaction is calculated using the formula m′=m1′+m2′-100ml; the mass m2 of water generated by the reaction of aluminum alloy and hydrochloric acid is calculated using the formula m2=m′-m1.

[0092] The alumina content Y was calculated using the reaction equation Al₂O₃ + 6HCl = 2AlCl₃ + 3H₂O.

[0093] Through formula The oxide content α in the aluminum alloy under test was calculated.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An aluminum alloy oxide content detection device, characterized in that, The application relates to an aluminum alloy oxide content detection device. The device comprises a reaction device with a closed reaction cavity for reacting aluminum alloy to be detected with hydrochloric acid; a heating device for heating the reaction device after the reaction to evaporate water in the reaction device; a condensing device in communication with the reaction device for condensing gaseous water from the reaction device into liquid water; a collecting device in communication with the condensing device for collecting water and hydrogen chloride from the condensing device; the collecting device comprises a liquid collecting tank in communication with the condensing device for collecting hydrochloric acid solution from the condensing device; a desiccator in the collecting device is in communication with the upper part of the liquid collecting tank through a gas pipe for collecting water vapor; the detection method of the aluminum alloy oxide content detection device comprises the following steps: placing a certain amount of aluminum alloy to be detected in the closed reaction cavity; injecting a certain concentration of sufficient hydrochloric acid into the closed reaction cavity to make the aluminum alloy to be detected fully react with the hydrochloric acid; after the reaction of the aluminum alloy to be detected with the hydrochloric acid, water and hydrogen chloride in the reaction device are separated by distillation and extracted into the collecting device; the mass of the liquid collecting tank before and after the reaction is obtained, and the mass of the liquid collecting tank after the reaction is subtracted from the mass of the liquid collecting tank before the reaction to obtain the mass of the hydrochloric acid solution in the liquid collecting tank; the concentration of the hydrochloric acid solution in the liquid collecting tank is calibrated, and the mass of the water in the liquid collecting tank is calculated according to the concentration of the hydrochloric acid solution obtained by calibration and the mass of the hydrochloric acid solution in the liquid collecting tank; the mass of the water in the desiccator before and after the reaction is obtained, and the mass of the water in the desiccator after the reaction is subtracted from the mass of the water in the desiccator before the reaction to obtain the mass of the water in the desiccator; the mass of the water in the collecting device is obtained by adding the mass of the water in the liquid collecting tank and the mass of the water in the desiccator; and the oxide content in the aluminum alloy to be detected is calculated according to the mass of the water in the collecting device, the mass of water in the hydrochloric acid injected into the closed reaction cavity and the mass of the aluminum alloy to be detected. The main component of the oxide in the aluminum alloy to be detected is Al2O3, and other oxides in the aluminum alloy to be detected are little and also generate water after reacting with hydrochloric acid, so the other oxides can be regarded as Al2O3, that is, the mass of Al2O3 participating in the reaction is basically equal to the mass of the oxide in the aluminum alloy. The aluminum alloy oxide content detection device further comprises a solution tank for containing hydrochloric acid, the solution tank is in communication with the reaction device and can inject hydrochloric acid into the reaction device; a first valve is arranged between the solution tank and the reaction device. A scale is arranged on the solution tank. The desiccator and the condensing device are detachably connected with the liquid collecting tank. The condensing device comprises a condensing pipe, the liquid collecting tank is provided with a liquid inlet and a gas outlet, the upper end of the condensing pipe is in communication with the upper part of the reaction device, and the lower end of the condensing pipe is connected to the liquid collecting tank; the condensing pipe is in plug-in cooperation with the liquid inlet through a first sealing plug, and the gas pipe is in plug-in cooperation with the gas outlet through a second sealing plug. ​ 2. The aluminum alloy oxide content detection apparatus according to claim 1, characterized by, ​ 3. The aluminum alloy oxide content detection apparatus according to claim 2, characterized by, ​ 4. The aluminum alloy oxide content detection apparatus of claim 1, wherein ​ 5. The aluminum alloy oxide content detection apparatus of claim 4, wherein ​ 6. The aluminum alloy oxide content detection apparatus of claim 1, wherein The heating device comprises a heating device for heating the reaction device; The heating device further comprises a temperature regulating switch electrically connected with the heating device for regulating the heating temperature of the heating device; and / or the heating device is installed at the bottom of the reaction device.

7. The aluminum alloy oxide content detection apparatus according to any one of claims 1 to 6, characterized by, The reaction device is provided with a material inlet for placing the aluminum alloy to be detected, and a box door is installed at the material inlet, and the box door is provided with a second valve capable of switching between a locked state and an unlocked state. The second valve can lock the box door in the closed state when switched to the locked state, and can open the box door when switched to the unlocked state.

8. A method of detecting the oxide content of an aluminum alloy, characterized by, The method is applied to the aluminum alloy oxide content detection equipment according to any one of claims 1-7, and the method comprises: A certain mass of aluminum alloy to be detected is placed in the sealed reaction cavity; A certain concentration of sufficient hydrochloric acid is injected into the sealed reaction cavity to make the aluminum alloy to be detected react with the hydrochloric acid sufficiently; After the reaction of the aluminum alloy to be detected with the hydrochloric acid is completed, the water and hydrogen chloride in the reaction device are separated by distillation and extracted into the collection device; The mass of the liquid collecting tank before and after the reaction is obtained, and the mass of the liquid collecting tank after the reaction is subtracted from the mass of the liquid collecting tank before the reaction to obtain the mass of the hydrochloric acid solution in the liquid collecting tank; The concentration of the hydrochloric acid solution in the liquid collecting tank is calibrated, and the mass of the water in the liquid collecting tank is calculated according to the concentration of the hydrochloric acid solution obtained by calibration and the mass of the hydrochloric acid solution in the liquid collecting tank; The mass of the desiccator before and after the reaction is obtained, and the mass of the water in the desiccator is obtained by subtracting the mass of the desiccator after the reaction from the mass of the desiccator before the reaction; The mass of the water in the liquid collecting tank and the mass of the water in the desiccator are summed to obtain the mass of the water in the collection device; The oxide content in the aluminum alloy is calculated according to the mass of the water in the collection device, the mass of the water in the hydrochloric acid injected into the sealed reaction cavity, and the mass of the aluminum alloy to be detected.

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