A continuous stirring device for chromite ore alkaline fusion leaching reaction

Abstract

The utility model discloses a kind of continuous stirring devices of chrome ore alkali fusion leaching reaction, comprising: reaction cylinder, its top end and side are respectively communicated with feeding unit and liquid outlet pipe, further comprising: stirring frame, it is rotatably connected in the reaction cylinder by motor drive unit;Scraper, it is arranged in close contact with the bottom of reaction cylinder inside, and with the stirring frame bottom end is connected, the scraper is about the middle axis of reaction cylinder and symmetrically arranged with two groups;Heater, it is sleeved on the outer wall of reaction cylinder;Discharge unit, it is hingedly arranged in the bottom end of reaction cylinder.The utility model passes through a kind of continuous stirring devices of chrome ore alkali fusion leaching reaction, solves the problem that most of existing chrome ore alkali fusion leaching reaction device cannot be continuously stirred.

Description

Technical Field

[0001] This utility model relates to the field of chromium ore technology, specifically to a continuous stirring device for the alkaline leaching reaction of chromium ore. Background Technology

[0002] Metallic chromium is mainly used to smelt special alloys with elements such as cobalt, nickel, and tungsten. These special steels and alloys are indispensable materials for the production of guns, missiles, rockets, and ships in the aerospace, automotive, shipbuilding, and defense industries. In refractory materials, chromite is used to manufacture chromium bricks, chromium-magnesium bricks, and other special refractory materials. In the chemical industry, chromium ore is mainly used to produce sodium dichromate, which is then used to produce other chromium compounds for use in pigments, textiles, electroplating, leather making, and other industries. It can also be used to make catalysts and catalytic agents.

[0003] To extract substances from chromite, the chromite raw material needs to be heated and soaked. However, most existing chromite alkaline leaching reaction devices cannot be continuously stirred. After the precipitate settles at the bottom of the reaction tank, the operator needs to drain the liquid and precipitate in sequence before adding raw material and stirring again. Because the device cannot be continuously stirred, the extraction efficiency of chromite raw material is low and the manual operation is cumbersome. Utility Model Content

[0004] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages according to this utility model, a continuous stirring device for the alkaline leaching reaction of chromium ore is provided, comprising: a reaction cylinder, wherein a feed unit and a liquid outlet pipe are respectively connected to its top and lower side sections; and further comprising:

[0006] A stirring rack is rotatably connected inside the reaction cylinder via a motor drive unit;

[0007] The scraper is set close to the bottom of the inner side of the reaction cylinder and connected to the bottom of the stirring rack. Two sets of scrapers are symmetrically arranged about the central axis of the reaction cylinder.

[0008] A heater, which is fitted onto the outer wall of the reaction cylinder;

[0009] The discharge unit is hinged at the discharge port at the bottom of the reaction cylinder.

[0010] Preferably, the structure of the feeding unit includes:

[0011] The hopper has one end connected to the top of the reaction cylinder and the other end is hinged to a cover plate.

[0012] The water injection pipe is connected to the top of the reaction cylinder.

[0013] Preferably, the structure of the motor drive unit includes:

[0014] The first transmission wheel is fixedly mounted on the output shaft of the motor;

[0015] The second drive wheel is fixedly mounted on the rotating shaft of the stirring frame and is connected to the first drive wheel by a drive belt;

[0016] A bearing is provided at the connection between the rotating shaft of the stirring rack and the reaction cylinder.

[0017] Preferably, the structure of the discharge unit includes:

[0018] The discharge port is connected to the bottom end of the reaction cylinder, and a baffle is hinged to the outer side.

[0019] The first pin seat is fixedly installed on the discharge port side of the reaction cylinder by means of a vertical plate;

[0020] The second pin seat is fixedly mounted on the baffle.

[0021] An electro-hydraulic push rod, one end of which is hinged to the first pin seat and the other end of which is hinged to the second pin seat.

[0022] This utility model has at least the following beneficial effects:

[0023] This device, by having a liquid outlet pipe on the side and a discharge unit at the bottom, allows the well-stirred mixed solution to be discharged to the outside of the reaction cylinder through the liquid outlet pipe. Because the liquid outlet pipe is positioned high, the precipitate that settles at the bottom of the reaction cylinder will not be discharged from the liquid outlet pipe. When the mixed solution stops flowing out of the liquid outlet pipe, the operator can add chromite and reaction solution back into the reaction cylinder to continue stirring and reacting. The precipitate that has been stirred multiple times in the reaction cylinder can be discharged from the discharge unit at the bottom.

[0024] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0025] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 3 This is an enlarged structural schematic diagram of the motor drive unit of this utility model;

[0028] Figure 4 This is an enlarged structural diagram of the discharge unit of this utility model. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0030] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0031] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] The following is a detailed description of this novel experimental device with reference to the accompanying drawings:

[0035] Figure 1-4 This invention discloses a continuous stirring device for the alkaline leaching reaction of chromium ore, comprising: a reaction cylinder 1, wherein a feed unit 2 and a liquid outlet pipe 11 are respectively connected to its top and lower side sections; and further comprising:

[0036] The stirring rack 3 is rotatably connected inside the reaction cylinder 1 via a motor drive unit 4;

[0037] The scraper 5 is set close to the bottom of the inner side of the reaction cylinder 1 and is connected to the bottom of the stirring frame 3. Two sets of scrapers 5 are symmetrically arranged about the central axis of the reaction cylinder 1.

[0038] Heater 6 is fitted onto the outer wall of the reaction cylinder 1;

[0039] The discharge unit 7 is hinged at the discharge port 71 at the bottom end of the reaction cylinder 1.

[0040] Working principle:

[0041] First, the operator adds the chromium ore raw material and reaction liquid into the inside of the reaction cylinder 1 through the feeding unit 2. The motor drive unit 4 is started by the external power supply, so that the motor drive unit 4 carries the stirring rack 3 to stir inside the reaction cylinder 1. The stirring rack 3 can fully mix the chromium ore and the reaction liquid. At the same time, the heater 6 is started to heat the mixed liquid inside the reaction cylinder 1, further accelerating the reaction. The precipitate produced by the mixing will accumulate and settle at the bottom of the reaction cylinder 1.

[0042] After the mixed solution inside the reaction cylinder 1 has fully reacted, the operator discharges the well-reacted mixed liquid from the reaction cylinder 1 through the liquid outlet pipe 11 to achieve recycling. Then, the operator adds new chromium ore raw material and reaction liquid into the reaction cylinder 1 to start a new round of mixing reaction, thereby achieving the purpose of continuous stirring reaction.

[0043] When there is too much sediment, the operator stops adding chromite raw materials and reaction liquid, and starts the discharge unit 7 through the external power supply. At this time, with the assistance of the stirring frame 3, the scraper 5 can scrape off the sediment adhering to the inner wall of the reaction cylinder 1. The discharge unit 7 is opened, and the sediment at the bottom of the reaction cylinder 1 can be discharged from the discharge port 71 to the reaction cylinder 1 to achieve recycling.

[0044] in,

[0045] ① The device uses a liquid outlet pipe 11 set on the side and a material outlet unit 7 set at the bottom to cooperate so that the mixed solution that has been stirred and reacted is discharged from the reaction cylinder 1 through the liquid outlet pipe 11, thus completing the collection of the mixed solution. Because the liquid outlet pipe 11 is located in the lower middle part of the side and is higher than the material outlet unit 7, the precipitate that settles at the bottom of the reaction cylinder 1 will not be discharged from the liquid outlet pipe 11.

[0046] When the height of the mixed solution drops to the outlet pipe 11 (no mixed solution flows out), the operator can add chromite and reaction solution back into the reaction cylinder 1 to continue stirring and reacting. The precipitate after multiple stirrings in the reaction cylinder 1 can be discharged from the bottom discharge unit 7, which improves extraction efficiency and reduces the tediousness of manual operation while achieving multiple stirrings.

[0047] ② In order to raise the reaction cylinder 1 to a certain height to facilitate the collection of mixed solution and precipitate, four support feet 12 are evenly installed on the outer surface of the reaction cylinder. In order to ensure the stability of the support feet, support bases 13 are added at the contact points between the support feet 12 and the ground to increase the contact area and enable the device to be placed stably.

[0048] ③ To ensure convenient collection of the mixed solution, a valve 111 is fixedly installed on the outer surface of the outlet pipe 11;

[0049] ④ In order to determine the position of the solution inside the reaction cylinder 1 or the height of the precipitate inside the reaction cylinder 1, a viewing window is provided near the valve 111 so that the operator can close the valve 111 in time or open the discharge unit 7 in time to clean up the precipitate.

[0050] As described above, the feeding unit 2 includes the following structure:

[0051] The hopper 21 has one end connected to the top of the reaction cylinder 1, and the other end is hinged to a cover plate 22.

[0052] Water injection pipe 23 is connected to the top of the reaction cylinder 1.

[0053] Working principle:

[0054] The operator opens the cover plate 22 through the hinge, and then adds the chromite raw material and reaction liquid into the reaction cylinder 1 through the hopper 21. Water is then injected into the interior of the reaction cylinder 1 through the water injection pipe 23 (when the chromite raw material is heated and soaked in the reaction, water is injected ① to dissolve the products and make the soluble compounds generated in the reaction dissolve, which is convenient for subsequent separation and purification; ② water can regulate the temperature and humidity of the reaction system, which is conducive to the reaction; ③ adding water can prevent the chromite and alkaline substances from clumping during the reaction and maintain the fluidity of the reactants).

[0055] in,

[0056] ①The cover plate 22 can block splashed liquid;

[0057] ② To facilitate the addition of chromite raw materials and reaction solution by operators, a handle 24 is added to the cover plate 22, which allows operators to open the cover plate 22 more easily.

[0058] As described above, the structure of the motor drive unit 4 includes:

[0059] The first transmission wheel 42 is fixedly mounted on the output shaft 41 of the motor 40;

[0060] The second transmission wheel 43 is fixedly mounted on the rotating shaft 31 of the stirring frame 3 and is connected to the first transmission wheel 42 by a transmission belt 44.

[0061] A bearing 45 is provided at the connection between the rotating shaft 31 of the stirring rack 3 and the reaction cylinder 1.

[0062] Working principle:

[0063] The specific structural method by which the motor drive unit 4 drives the stirring rack 3 is as follows:

[0064] When the operator starts the motor 40 with an external power supply, the output shaft 41 of the motor 40 drives the first transmission wheel 42 to rotate, and the transmission belt 44 on the first transmission wheel 42 begins to slide. It is transmitted to the second transmission wheel 43 at the other end through the transmission belt 44. The second transmission wheel 43 can then drive the rotating shaft 31 of the stirring rack 3 to rotate, thereby completing the stirring operation of the stirring rack 3 on the chromium ore raw material and the reaction liquid.

[0065] in,

[0066] ① During use, the selected transmission belt 44 can buffer and absorb vibration. The transmission belt can provide smooth power transmission, which is suitable for stirring minerals. At the same time, the operating noise is low, reducing noise pollution.

[0067] ② The bearing 45 fixes and limits the rotation shaft 31 of the stirring frame 3, ensuring that the reaction cylinder 1 is not affected when the rotation shaft 31 of the stirring frame 3 rotates;

[0068] ③ To protect the structural components on the motor drive unit 4, a housing 46 is added to the outside and the top of the reaction cylinder 1, and to ensure the heat dissipation effect of the motor 40, a heat dissipation window 47 is provided on the housing 46.

[0069] As described above, the structure of the discharge unit 7 includes:

[0070] The discharge port 71 is connected to the bottom end of the reaction cylinder 1, and a baffle 72 is hinged to its outer side.

[0071] The first pin seat 73 is fixedly installed on one side of the discharge port 71 of the reaction cylinder 1 by means of the vertical plate 74;

[0072] The second pin seat 75 is fixedly installed on the baffle 72;

[0073] An electro-hydraulic push rod 76 has one end hinged to the first pin seat 73 and the other end hinged to the second pin seat 75.

[0074] Working principle:

[0075] When there is too much sediment, the operator stops adding chromite raw materials and reaction liquid, and starts the discharge unit 7 through the external power supply. Since one end of the electric hydraulic push rod 76 is fixedly connected to the first pin seat 73 of the vertical plate 74, one end of the electric hydraulic push rod 76 remains stationary, while the other end of the electric hydraulic push rod 76 connected to the second pin seat 75 drives the baffle 24 hinged at the discharge port 71 to flip, so that the sediment at the bottom of the reaction cylinder 1 is discharged through the discharge port 71.

[0076] After the sediment is discharged, the electric hydraulic push rod 76 drives the baffle 24 to return to the center, so that the baffle 72 blocks the discharge port 71 again, thus completing the sediment discharge operation.

[0077] in,

[0078] ① In actual use, to make it easier for operators to use the discharge unit 7, a controller 14 can be added to the reaction cylinder 1, and the electric hydraulic push rod 76 can be connected to the output end of the controller 14 through an external wire, so as to ensure that the sediment can be processed in a timely manner.

[0079] ②The electro-hydraulic actuator 76 is existing technology or a commercially available product, and its specific structure will not be elaborated further in this article.

[0080] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A continuous stirring apparatus for the alkaline leaching reaction of chromite, comprising: The reaction cylinder, with its top and lower side sections respectively connected to a feed unit and a liquid outlet pipe, is characterized in that it further includes: A stirring rack is rotatably connected inside the reaction cylinder via a motor drive unit; The scraper is set close to the bottom of the reaction cylinder and connected to the bottom of the stirring rack. Two sets of scrapers are symmetrically arranged about the central axis of the reaction cylinder. A heater, which is fitted onto the outer wall of the reaction cylinder; The discharge unit is hinged at the discharge port at the bottom of the reaction cylinder.

2. The continuous stirring apparatus for the alkali leaching reaction of chromite ore according to claim 1, characterized in that, The structure of the feeding unit includes: The hopper has one end connected to the top of the reaction cylinder and the other end is hinged to a cover plate. The water injection pipe is connected to the top of the reaction cylinder.

3. The continuous stirring apparatus for the alkali leaching reaction of chromite ore according to claim 1, characterized in that, The structure of the motor drive unit includes: The first transmission wheel is fixedly mounted on the output shaft of the motor; The second drive wheel is fixedly mounted on the rotating shaft of the stirring frame and is connected to the first drive wheel by a drive belt; A bearing is provided at the connection between the rotating shaft of the stirring rack and the reaction cylinder.

4. The continuous stirring apparatus for the alkali leaching reaction of chromite ore according to claim 1, characterized in that, The structure of the discharge unit includes: The discharge port is connected to the bottom end of the reaction cylinder, and a baffle is hinged to the outer side. The first pin seat is fixedly installed on the discharge port side of the reaction cylinder by means of a vertical plate; The second pin seat is fixedly mounted on the baffle. An electro-hydraulic push rod, one end of which is hinged to the first pin seat and the other end of which is hinged to the second pin seat.

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