Device for measuring dry slag rate of liquid reduced lead

Abstract

The utility model discloses a device for measuring the dry slag rate of liquid reduced lead. The device comprises a sampling mechanism for sampling reduced lead liquid from a liquid lead bag, and an ingot casting mold for preparing the reduced lead liquid taken by the sampling mechanism into a lead ingot for measuring the oxygen content and the sulfur content so as to calculate the dry slag rate of the reduced lead, the sampling mechanism comprises a sampling rod, a sealing plug matched with the sampling rod for sampling, and a handle connected to the outer wall of the sampling rod; the top end of an inner hole of the sampling rod is in a circular truncated cone shape facilitating installation of the sealing plug. The lower part of the sealing plug is in a big-end-up circular truncated cone shape matched with the top end of the inner hole of the sampling rod; the ingot casting mold is in a hollow cylinder shape with a bottom, and the interior of the ingot casting mold is in a big-end-up circular truncated cone shape so that a circular truncated cone-shaped lead ingot can be cast. The dry slag rate measuring device is simple in structure, rapid in dry slag rate measurement and high in accuracy, solves the problems that a conventional wet lead dry slag rate measurement period is long, measured data are easy to interfere, and measured values have deviation, and can better guide adjustment in the production process.

Description

Technical Field

[0001] This utility model belongs to the field of lead smelting, specifically relating to a device for determining the dry slag rate of liquid reduced lead. Background Technology

[0002] In the lead smelting process, except for a few structures where reduced lead can be directly placed into the molten lead pot, most processes involve placing the reduced lead into a lead ladle, then hoisting it and pouring it into the molten lead pot, or waiting for the lead to cool and solidify before hoisting it out. To evaluate the dry slag rate of reduced lead over a certain period, it is necessary to wait until the amount of reduced lead reaches the volume of a whole molten lead pot, then add all the reduced lead into the molten lead pot for melting and slag removal, and calculate the reduced lead dry slag rate based on the weight of the dry slag. This method has the following problems: 1. Long measurement cycle: The process of reducing lead accumulation and slag removal takes at least 12 hours, making it impossible to provide timely guidance for production adjustments; 2. Data is easily affected by interference: In some cases, due to the production needs of different types of lead alloys, it may be necessary to mix the currently produced reduced lead with other reduced lead before adding it to the molten lead pot, which can cause the dry slag rate to be affected by other reduced lead. Summary of the Invention

[0003] This invention addresses the shortcomings of the aforementioned methods for determining the dry slag rate of reduced lead by providing a device for determining the dry slag rate of liquid reduced lead. It features a simple structure, rapid dry slag rate determination, and relatively high accuracy.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a device for determining the dry residue rate of liquid reduced lead, comprising:

[0005] Sampling mechanism for taking samples of molten lead from liquid lead containers;

[0006] Ingot molds are used to form lead ingots from the molten lead sampled by the sampling mechanism for determining the oxygen and sulfur content in order to calculate the dry slag rate of the reduced lead.

[0007] The sampling mechanism includes a sampling rod, a sealing plug for sampling in conjunction with the sampling rod, and a handle connected to the outer wall of the sampling rod; the sampling rod has a hollow cylindrical structure, and the top of the inner hole of the sampling rod has a frustum-shaped structure to facilitate the installation of the sealing plug; the lower part of the sealing plug has a frustum-shaped structure that is larger at the top and smaller at the bottom and adapted to the top of the inner hole of the sampling rod.

[0008] The ingot mold is a hollow cylinder with a bottom, and the volume of the hollow part inside the ingot mold is adapted to the volume of the sampling rod; the hollow shape inside the ingot mold is a frustum shape with a larger top and a smaller bottom to cast a frustum-shaped lead ingot.

[0009] The lower end of the sampling rod has an inclined cross-section, and the ratio of the height h of the inclined part to the outer diameter D of the sampling rod is 0.8 to 1.0.

[0010] The upper part of the sealing plug is cylindrical, and the outer diameter W of the upper part is larger than the outer diameter D of the sampling rod to facilitate removal.

[0011] The difference between the outer diameter W of the upper part of the sealing plug and the outer diameter D of the sampling rod is 5mm to 10mm.

[0012] One end of the handle is rod-shaped for gripping, and the other end is clamp-shaped for movably connecting to the outer wall of the sampling rod.

[0013] The outer wall of the sampling rod is provided with two connecting posts for connecting the handle.

[0014] The sampling rod is made of iron pipe; the height H of the sampling rod is 135mm to 150mm, and the inner diameter is 15mm to 25mm.

[0015] The handle is made of threaded steel.

[0016] The ingot mold is made of cast iron or stainless steel.

[0017] The ratio of the top diameter to the bottom diameter of the hollowed-out circular platform inside the ingot mold is 10:8-9, and the ratio of the height of the platform to the top diameter is 0.9-1:1.

[0018] This utility model provides a device for determining the dry residue rate of liquid reduced lead. It features a simple structure, rapid dry residue rate determination, and relatively high accuracy. It can sample different heights of liquid reduced lead inside the lead ladle, and the sampling points are representative. It solves the problems of long measurement cycle, easy interference of measurement data, and deviation of measurement values ​​in conventional crude lead dry residue rate determination methods. It can better guide the adjustment of the production process and effectively solve the problems in the process of determining the dry residue rate of liquid reduced lead. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the sampling mechanism of this utility model.

[0020] Figure 2 This is the front view of the sampling mechanism of this utility model.

[0021] Figure 3 This is the front view of the sealing plug.

[0022] Figure 4 This is a three-dimensional structural diagram of an ingot casting mold.

[0023] Figure 5 This is a three-dimensional structural diagram of the sampled lead ingot being cast using a casting mold.

[0024] In the diagram: 1. Sealing plug; 2. Sampling rod; 3. Handle; 4. Ingot mold; 5. Upper opening of the sampling rod; 6. Lower opening of the sampling rod; 7. Connecting post; 8. Sampling location of the lead ingot; H. Height of the sampling rod; L. Height of the connecting post when the sampling rod is placed vertically; h. Height of the inclined part at the lower end of the sampling rod; W. Diameter of the upper part of the sealing plug; D. Outer diameter of the sampling rod; d. Inner diameter of the sampling rod. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the present invention.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, an apparatus for determining the dry slag rate of liquid reduced lead includes a sealing plug 1, a sampling rod 2, a handle 3, and an ingot mold 4. The sealing plug 1 is installed at the opening 5 at the upper end of the sampling rod during sampling; one end of the handle 3 is rod-shaped for gripping, and the other end is pliers-shaped, connected to the sampling rod 2 via two connecting posts 7, and can move freely; after sampling by the sampling rod 2, the molten lead is poured into the ingot mold 4 for measurement.

[0027] The sampling rod 2 is made of iron pipe, hollow cylindrical in shape, with a height H of 135mm-150mm and an inner diameter of 15mm-25mm. The connecting post 7 is above the lead liquid surface. The inner diameter of the upper opening 5 of the sampling rod 2 gradually increases to facilitate the installation of the sealing plug 1. The lower opening 6 of the sampling rod 2 has an inclined cross-section, where the height h of the inclined part is 0.8-1.0 times the outer diameter D of the sampling rod. The sealing plug 1 is made of high-temperature resistant rubber, with a frustum-shaped lower end that matches the shape of the upper opening of the sampling rod 2 for sealing. The upper end is cylindrical, with a diameter W greater than the outer diameter D of the sampling rod for easy removal. The difference between the upper diameter of the sealing plug and the outer diameter of the sampling rod is 5mm-10mm. The handle 3 is made of threaded steel, with one end being rod-shaped for gripping and the other end being pliers-shaped. It is connected to the sampling rod 2 via two connecting posts 7 and can move freely. The connecting posts are annularly welded to both sides of the sampling rod. The end of the handle engages with the recessed part of the connecting post, allowing it to rotate freely without falling off. When the sampling rod 2 is placed vertically, the height L of the connecting post is 85mm to 100mm.

[0028] like Figure 4 As shown, the ingot mold 4 is a hollow cylinder with a bottom, and the internal hollow shape is a frustum shape, wider at the top and narrower at the bottom. The volume of the internal hollow part should be basically the same as the internal volume of the sampling rod. The frustum-shaped lead ingot that can be cast from the ingot mold 4 needs to be cut open along the axis of symmetry before measurement. Then, samples are taken at three sampling points 8 at the axis of symmetry of the ingot cross-section, which are 1 / 6, 1 / 2, and 5 / 6 of the height from the bottom, and the average value is taken.

[0029] Working principle: Before use, first remove the sealing plug 1, then hold the handle 3 and insert the lower end of the sampling rod 2 into the liquid lead container, so that the reduced lead liquid completely enters the sampling rod 2. Then place the sealing plug 1 at the upper opening 5 of the sampling rod 2 and tighten it. Take the sampling rod 2 out of the liquid lead container, align the lower opening 6 with the ingot mold 4, remove the sealing plug 1, and the liquid lead flows into the ingot mold 4.

[0030] After the molten lead in casting mold 4 cools and solidifies, pour out the lead ingot and saw it open along the axis of symmetry (e.g., Figure 5 (As shown), then three sampling points 8, located at 1 / 6, 1 / 2, and 5 / 6 of the height from the bottom at the symmetrical axis of the lead ingot cross-section, were measured using a direct-reading spectrometer to obtain the values ​​of O and S, and the average value was taken.

[0031] Calculation of reduced lead slag percentage: The average of the three values ​​measured at the sampling point, including O and S, is denoted as O% and S%, respectively. The lead content of the reduced lead slag is denoted as Pb%. Therefore, the reduced lead slag percentage is:

[0032] Reduced lead dry slag percentage % = (O% × 12.9 + S% × 6.5) / Pb%

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An apparatus for determining the dry residue rate of liquid reduced lead, characterized in that: include: Sampling mechanism for taking samples of molten lead from liquid lead containers; Ingot molds are used to form lead ingots from the molten lead sampled by the sampling mechanism for determining the oxygen and sulfur content in order to calculate the dry slag rate of the reduced lead. The sampling mechanism includes a sampling rod, a sealing plug for sampling in conjunction with the sampling rod, and a handle connected to the outer wall of the sampling rod; the sampling rod has a hollow cylindrical structure, and the top of the inner hole of the sampling rod has a frustum-shaped structure to facilitate the installation of the sealing plug; the lower part of the sealing plug has a frustum-shaped structure that is larger at the top and smaller at the bottom and adapted to the top of the inner hole of the sampling rod. The ingot mold is a hollow cylinder with a bottom, and the volume of the hollow part inside the ingot mold is adapted to the volume of the sampling rod; the hollow shape inside the ingot mold is a frustum shape with a larger top and a smaller bottom to cast a frustum-shaped lead ingot.

2. The apparatus for determining dry slag rate from liquid reduced lead as claimed in claim 1 wherein: The lower end of the sampling rod has an inclined cross-section, and the ratio of the height h of the inclined part to the outer diameter D of the sampling rod is 0.8 to 1.

0.

3. The apparatus for determining dry slag rate from liquid reduced lead as claimed in claim 1 wherein: The upper part of the sealing plug is cylindrical, and the outer diameter W of the upper part is larger than the outer diameter D of the sampling rod to facilitate removal.

4. The apparatus for determining dry slag rate from liquid reduced lead as claimed in claim 3 wherein: The difference between the outer diameter W of the upper part of the sealing plug and the outer diameter D of the sampling rod is 5mm to 10mm.

5. The apparatus for determining dry slag rate from liquid reduced lead as claimed in claim 1 wherein: One end of the handle is rod-shaped for gripping, and the other end is clamp-shaped for movably connecting to the outer wall of the sampling rod.

6. The apparatus for determining dry slag rate from liquid reduced lead as claimed in claim 5 wherein: The outer wall of the sampling rod is provided with two connecting posts for connecting the handle.

7. The apparatus for determining dry slag rate from liquid reduced lead as claimed in claim 1 wherein: The sampling rod is made of iron pipe; the height H of the sampling rod is 135mm to 150mm, and the inner diameter is 15mm to 25mm.

8. The apparatus for determining the dry residue rate of liquid reduced lead according to claim 1, characterized in that: The handle is made of threaded steel.

9. The apparatus for determining dry slag rate from liquid reduced lead as claimed in claim 1 wherein: The ingot mold is made of cast iron or stainless steel.

10. The apparatus for determining dry slag rate from liquid reduced lead as claimed in claim 1 wherein: The ratio of the top diameter to the bottom diameter of the hollowed-out circular platform inside the ingot mold is 10:8-9, and the ratio of the height of the platform to the top diameter is 0.9-1:1.

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