Testing device for cement fly ash ignition loss test

Abstract

The utility model discloses a testing device for a cement fly ash ignition loss test. The device comprises a ceramic crucible, a ceramic frame and an anti-scalding clamp, a supporting column is fixed to the inner wall of a crucible cover of the ceramic crucible, a certain included angle is formed between the supporting column and the inner wall of the crucible cover, the ceramic frame comprises at least one cuboid-shaped ceramic frame body, each ceramic frame body is provided with at least two containing grooves used for containing the ceramic crucible, and the anti-scalding clamp is arranged in the containing grooves. Two anti-scald clamp insertion holes are formed in each ceramic frame body, each anti-scald clamp comprises a handle and a U-shaped clamp arm connected to one end of the handle, and the ceramic frame bodies are connected into a whole in the mode that the U-shaped clamp arms of the anti-scald clamps penetrate into the anti-scald clamp insertion holes in the ceramic frame bodies. The anti-scalding device is simple in structure, and high-temperature scalding can be effectively prevented by matching the anti-scalding clamp with the high-temperature-resistant ceramic frame; the supporting columns are arranged on the inner wall of the crucible cover, so that the crucible cover can be effectively prevented from falling off to affect the accuracy of test data during an ignition loss test.

Description

Technical Field

[0001] The utility model relates to a test device for testing the loss on ignition of cement fly ash. Background Art

[0002] Loss on ignition refers to the percentage of the mass lost by a raw material that has been dried to remove external moisture in the temperature range of 105 - 110 °C after being burned for a sufficient length of time under a certain high-temperature condition, accounting for the mass of the original sample. Here, the high-temperature environment has detailed regulations in the technical standards of each industry according to the characteristics of different industries. Taking cement and fly ash as examples, according to the current specification requirements (GB / T 176 - 2017), 1 g of the test sample is weighed accurately to 0.0001 g and placed in a porcelain crucible that has been burned to constant weight (the difference between two weighings is not more than 0.0005 g). The crucible lid is covered and there is a gap left. It is placed in a high-temperature furnace at (950 ± 25) °C and burned for 15 - 20 min. The crucible is taken out and placed in a desiccator to cool to room temperature and weighed. It is burned repeatedly until it reaches a constant weight or burned at (950 ± 25) °C for about 1 h [when there is a dispute, the result of repeated burning until it reaches a constant weight (the difference between two weighings is not more than 0.0005 g) shall prevail], and then weighed after being placed in a desiccator and cooled to room temperature. The loss on ignition content of the sample is calculated by dividing the mass before burning minus the mass after burning by the mass before burning and multiplying by 100%.

[0003] During the loss on ignition test process, since it is required that there should be a certain gap between the crucible lid and the crucible, the usual method is to stagger the crucible lid and the upper edge of the crucible by a certain gap. During the test process, the crucible lid is very easy to fall off, affecting the accuracy of the test data. In addition, since the high-temperature resistance furnace is in a high-temperature environment during the loss on ignition test process, it is inconvenient for the operator to take the crucible, and it is very easy to cause burns, affecting the personal safety of the operator. Content of the Utility Model

[0004] Aiming at the above-mentioned defects existing in the prior art, the utility model provides a test device for testing the loss on ignition of cement fly ash, which has a simple structure, can effectively prevent the crucible lid from falling off during the loss on ignition test process, and is convenient for the operator to operate.

[0005] The present utility model is realized through the following technical solutions: An experimental device for testing the loss on ignition of cement fly ash, characterized in that it includes a ceramic crucible, a ceramic rack, and heat-resistant tongs. A support column is fixed on the inner wall of the crucible lid of the ceramic crucible, and the support column is arranged at a certain angle with the inner wall of the crucible lid. The ceramic rack includes at least one cuboid-shaped ceramic rack body. Each ceramic rack body is provided with at least two placement slots for placing the ceramic crucible. Each ceramic rack body is provided with two heat-resistant tongs insertion holes. The heat-resistant tongs include a handle and a U-shaped clamping arm connected to one end of the handle. The ceramic rack bodies are connected into one body through the U-shaped clamping arms of the heat-resistant tongs inserted into the heat-resistant tongs insertion holes in each ceramic rack body.

[0006] In the present utility model, by arranging a support column on the inner wall of the crucible lid, when the crucible lid and the upper edge of the crucible are placed with staggered joints, the support column can support on the inner wall of the crucible. The crucible lid can be supported by the support column, which can effectively prevent the crucible lid from falling off. The placement slots on the ceramic rack body are used to place the ceramic crucible. The heat-resistant tongs are used to take and place the ceramic crucible into and out of the high-temperature furnace. When the U-shaped clamping arm of the heat-resistant tongs is inserted into the heat-resistant tongs insertion hole on the ceramic rack body, it is convenient to take and place the ceramic rack body and the ceramic crucible placed in the placement slot together. The ceramic rack can be used for a test with a single ceramic rack body, or multiple ceramic rack bodies can be used for the burning test together according to the test requirements. It is convenient to take with the heat-resistant tongs.

[0007] Further, each ceramic rack body is provided with two placement slots.

[0008] Further, the two heat-resistant tongs insertion holes are symmetrically arranged outside the two placement slots.

[0009] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple. By arranging a support column on the inner wall of the crucible lid, during the loss on ignition test, the support column can support on the inner wall of the ceramic crucible. While ensuring a gap between the crucible lid and the crucible, it can effectively prevent the crucible lid from falling off during the test, which affects the accuracy of the test data, reduces the test error, ensures the accuracy of the test results, and at the same time can avoid the test data from exceeding the tolerance and save the test time. The ceramic rack is arranged in a way that includes at least one ceramic rack body. It can be used for a test with a single ceramic rack body or multiple ceramic rack bodies can be used for the burning test together, which can improve the test efficiency and reduce the energy consumption. By using heat-resistant tongs to take the ceramic rack, the heat-resistant tongs and the high-temperature-resistant ceramic rack can effectively prevent high-temperature burns, effectively ensure the operation safety of the operator, and the heat-resistant tongs can perform the taking operation on multiple ceramic rack bodies at one time, which is convenient to operate. Description of the Drawings

[0010] Figure 1 is a top view schematic diagram of the present utility model;

[0011] Figure 2It is the front view schematic diagram of the ceramic frame body in the present utility model;

[0012] Figure 3 It is Figure 2 the A-A cross-sectional schematic diagram in

[0013] Figure 4 It is the structural schematic diagram of the ceramic crucible in the present utility model;

[0014] Figure 5 It is the structural schematic diagram of the crucible cover in the present utility model;

[0015] Figure 6 It is Figure 5 the schematic diagram in the B direction in

[0016] Figure 7 It is the structural schematic diagram of the heat-insulating clamp in the present utility model;

[0017] In the figure, 1 is the ceramic frame, 2 is the heat-insulating clamp, 3 is the ceramic crucible, 4 is the crucible cover, 5 is the handle of the crucible cover, and 6 is the support column;

[0018] 1.1 is the ceramic frame body, 1.2 is the placement groove, and 1.3 is the heat-insulating clamp insertion hole;

[0019] 2.1 is the U-shaped clamping arm, and 2.2 is the handle. Specific embodiments

[0020] The present utility model will be further described below by non-limiting embodiments in conjunction with the accompanying drawings:

[0021] As shown in the accompanying drawings, a test device for the loss on ignition of cement fly ash includes a ceramic frame 1, a heat-insulating clamp 2, and a ceramic crucible 3.

[0022] The ceramic frame 1 includes at least one cuboid-shaped ceramic frame body 1.1. Each ceramic frame body 1.1 is provided with at least two placement grooves 1.2 for placing the ceramic crucible 3. Two heat-insulating clamp insertion holes 1.3 are arranged inside each ceramic frame body 1.1. The heat-insulating clamp insertion holes 1.3 penetrate through the width direction of the ceramic frame body 1.1 and are used for plugging and matching with the clamping arms of the heat-insulating clamp 2. Preferably, the two heat-insulating clamp insertion holes 1.3 are arranged outside the two placement grooves 1.2.

[0023] The heat-insulating clamp 2 includes a handle 2.2 and a U-shaped clamping arm 2.1 connected to one end of the handle 2.2. The heat-insulating clamp 2 can be processed and manufactured with high-temperature resistant materials, and its handheld part can be wrapped with a heat-insulating material layer to ensure operation safety. The U-shaped clamping arm 2.1 of the heat-insulating clamp 2 can be inserted into the heat-insulating clamp insertion hole 1.3 inside the ceramic frame body 1.1.

[0024] A support column 6 is fixed to the inner wall of the crucible cover 4 of the ceramic crucible 3. The support column 6 is arranged at a certain angle with the inner wall of the crucible cover 4, and one end of the support column 6 is fixed to the inner wall of the crucible cover 4. The function of the support column 6 is as follows: when the crucible cover 4 is placed obliquely on the upper edge of the ceramic crucible 3, leaving a gap (the gap is 3-4 mm) required by the test between the crucible cover 4 and the ceramic crucible 3, the support column 6 supports on the inner wall of the ceramic crucible 3. A stable support structure is formed among the support column 6, the crucible cover 4 and the contact part of the upper edge of the ceramic crucible 3, which can effectively prevent the crucible cover 4 from falling off during the test. The support column 6 can be made of ceramic material. The support column 6 can be bonded to the inner wall of the crucible cover by a high-temperature-resistant bonding material, or the support column 6 and the crucible cover 4 can be integrally made.

[0025] During the loss on ignition test, the ceramic crucible 3 is placed in the placement groove 1.2. The operator can insert the U-shaped clamping arm 2.1 of the heat-insulating clamp 2 into the heat-insulating clamp insertion hole 1.3 in the ceramic frame body 1.1 to clamp the ceramic frame body for picking and placing. According to the test requirements, a single ceramic frame body can be used for the burning test, or multiple ceramic frame bodies can be used for the burning test together. When multiple ceramic frame bodies are used for the burning test together, the U-shaped clamping arms 2.1 of the heat-insulating clamps can be inserted into the heat-insulating clamp insertion holes in each ceramic frame body at the same time to clamp and pick and place together, which is convenient for operation.

[0026] The structure of the utility model is simple. The heat-insulating clamp and the high-temperature-resistant ceramic frame can effectively prevent high-temperature burns and ensure the safety of the test personnel. By arranging a support column on the inner wall of the crucible cover of the ceramic crucible, it can effectively prevent the crucible cover from falling off during the loss on ignition test, affecting the accuracy of the test data, and can reduce the test error.

[0027] Other parts in this embodiment are all prior arts and will not be elaborated here.

Claims

1. An experimental device for testing the loss on ignition of cement fly ash, characterized in that: It includes a ceramic crucible, a ceramic rack, and heat-resistant tongs. A support column is fixed to the inner wall of the crucible lid of the ceramic crucible. The support column is arranged at a certain angle with the inner wall of the crucible lid. The ceramic rack includes at least one cuboid-shaped ceramic rack body. At least two placement slots for placing the ceramic crucible are provided on each ceramic rack body. Two heat-resistant tongs insertion holes are provided in each ceramic rack body. The heat-resistant tongs include a handle and a U-shaped clamping arm connected to one end of the handle. The ceramic rack bodies are connected into one body through the U-shaped clamping arms of the heat-resistant tongs inserted into the heat-resistant tongs insertion holes in each ceramic rack body.

2. The test device for the loss on ignition test of cement fly ash, as described in claim 1, is characterized in that: Two placement slots are provided on each ceramic rack body.

3. The test device for the loss on ignition test of cement fly ash is characterized in that: The two heat-resistant tongs insertion holes are symmetrically arranged outside the two placement slots.

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