Production line for preparing iron oxide pigment

Abstract

The invention discloses a production line for preparing an iron oxide pigment. The production line comprises a crushing device, a ball milling device, an iron screening device, a reaction device, a solid-liquid separation device, a drying device and a packaging device which are sequentially arranged, the iron screening device comprises an iron screening box, a liquid inlet pipe is arranged on the left side of the upper end of the iron screening box, a liquid outlet pipe is arranged on the right side of the lower end of the iron screening box, electromagnetic rods extending downwards are installed at an end cover of the upper end of the iron screening box and evenly distributed in the iron screening box, and the upper ends of the electromagnetic rods are correspondingly connected with a relay through wires. According to the iron oxide pigment production device, iron oxide pigment production is achieved through cooperation of all the arranged devices, in addition, the iron screening device is arranged, iron screening treatment can be effectively conducted on iron oxide pigment, the iron screening efficiency and quality are effectively improved, and the overall iron oxide pigment production quality and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of iron oxide pigment production, and specifically relates to a production line for preparing iron oxide pigments. Background Art

[0002] In the prior art, the specific production equipment for iron oxide pigments includes the following equipment:

[0003] Crushing device: Used to roughly crush raw materials such as lumpy iron ore or scrap iron, reduce the particle size of the raw materials, and facilitate subsequent processing, such as jaw crushers, cone crushers, etc.;

[0004] Ball milling device: Further grind the raw materials after rough crushing to make them reach a suitable particle size and provide a suitable material fineness for subsequent reactions. It can be divided into dry ball mills and wet ball mills;

[0005] Iron screening device: Used to remove magnetic impurities in the raw materials, improve the purity of the raw materials, and ensure product quality. Common ones include permanent magnet drum magnetic separators, electromagnetic disk magnetic separators, etc.;

[0006] Reaction kettle: As the core equipment for reactions such as the ferrous sulfate method and the ferric chloride hydrolysis method, it is used to carry out chemical reactions such as dissolution, oxidation, and hydrolysis of raw materials. Reaction kettles of different materials and specifications can be selected according to reaction conditions, such as enamel reaction kettles, stainless steel reaction kettles, etc.;

[0007] Stirrer: Installed in the reaction kettle, used to stir the reaction materials, make the reaction more sufficient and uniform, improve the reaction efficiency and product quality. Common ones include anchor stirrers, paddle stirrers, turbine stirrers, etc.;

[0008] Filter press equipment: Used to carry out solid-liquid separation on the iron oxide pigment suspension generated by the reaction to obtain a filter cake and remove most of the water, such as plate and frame filter presses, chamber filter presses, diaphragm filter presses, etc.;

[0009] Drying equipment: Suitable for drying in small batches or on a laboratory scale, with a simple structure and convenient operation, but low production efficiency, such as an electric heating blast drying oven.

[0010] Packaging equipment: Can realize automatic metering, filling, sealing and other packaging operations for iron oxide pigments, improve packaging efficiency and quality. Common ones include particle packaging machines, powder packaging machines, etc.

[0011] Each piece of equipment in the above production line is very important. Especially the iron screening equipment can screen out iron impurities in the iron oxide pigments, which plays a crucial role in the overall purity of the iron oxide pigments.

[0012] Most of the iron screening equipment in the prior art uses electromagnetic mechanisms to achieve iron screening. Usually, an electromagnetic rod is inserted into an iron screening box, and then a mixed solution of iron oxide is placed in the iron screening box. After the electromagnetic rod is powered on, it generates a magnetic force to adsorb the iron impurities inside for removing the internal impurities. After the electromagnetic rod is powered off, the iron impurities on the electromagnetic rod fall off, realizing the collection and removal of these impurities. The structural design is quite ingenious.

[0013] However, there are still certain defects in the above equipment during specific use. That is, the iron impurities adsorbed on the electromagnetic rod may not fall off from the electromagnetic rod due to static electricity and the adhesion of the liquid after the electromagnetic rod is powered off, and the iron impurities cannot be effectively removed, so there are certain defects during specific use.

[0014] Therefore, in order to solve the above problems, it is necessary to develop a production line for preparing iron oxide pigments with a reasonable structure and capable of effectively removing iron impurities. Summary of the Invention

[0015] The purpose of the present invention is to provide a production line for preparing iron oxide pigments in view of the deficiencies existing in the prior art. The technical solution is as follows:

[0016] A production line for preparing iron oxide pigments includes a crushing device, a ball milling device, an iron screening device, a reaction device, a solid-liquid separation device, a drying device, and a packaging device arranged in sequence. The iron screening device includes an iron screening box. A liquid inlet pipe is arranged on the left side of the upper end of the iron screening box, and a liquid outlet pipe is arranged on the right side of the lower end. An electromagnetic rod extending downward is installed at the upper end cover of the iron screening box, and the electromagnetic rods are evenly distributed in the iron screening box. The upper end of each electromagnetic rod is correspondingly connected to a relay through a wire.

[0017] A wind tube extending downward is also installed at the upper end cover of the iron screening box. The wind tube is a vertical cylindrical structure, the lower end of the wind tube is closed, and an air flow channel is arranged inside the wind tube. The wind tubes are evenly distributed in the iron screening box, and the wind tubes and the electromagnetic rods are arranged at intervals. Each wind tube is also provided with an air outlet, and the position of the air outlet is aligned with the adjacent electromagnetic rod. The air flow ejected from the wind tube blows towards the electromagnetic rod through the air outlet.

[0018] Further, the positions of the wind tubes and the electromagnetic rods in the iron screening box are correspondingly arranged. Four wind tubes are arranged around each electromagnetic rod, and four electromagnetic rods are also arranged around each wind tube. The wind tubes and the electromagnetic rods are evenly arranged at intervals.

[0019] Further, an air duct is correspondingly installed at the upper end of each wind tube, and a blowing device is correspondingly installed on the air duct. External air is introduced into the wind tube through the blowing device and then ejected from the air outlet.

[0020] Further, a liquid extraction pump and a solenoid valve are also installed on the liquid outlet pipe.

[0021] Further, the lower end of the air outlet cylinder is set at the same height as the lower end of the electromagnetic rod, and there is a transition gap between the lower end of the air outlet cylinder and the lower end of the electromagnetic rod and the bottom of the iron screening box.

[0022] Further, a reciprocating mechanism is also provided on the left side of the lower end of the iron screening box. The main shaft of the reciprocating mechanism extends into the iron screening box, and a reciprocating plate is installed at the shaft end. The reciprocating plate is located in the transition gap and moves to the right correspondingly under the action of the reciprocating mechanism, pushing the dropped iron filings to the right.

[0023] Further, a vertically downward discharge pipe is also installed at the lower right of the iron screening box; the reciprocating mechanism pushes the dropped iron filings to the discharge pipe.

[0024] Further, a solenoid valve and a material suction pump are installed on the discharge pipe.

[0025] Beneficial effects: The present invention has the following beneficial effects:

[0026] 1) The production of iron oxide pigment is realized through the cooperation of the various devices provided in the present invention. In addition, an iron screening device is provided, which can effectively screen the iron in the iron oxide pigment, effectively improving the iron screening efficiency and quality, and improving the overall production quality and efficiency of the iron oxide pigment;

[0027] 2) In the present invention, the adsorption of iron impurities is realized through the electromagnetic rod, and the removal of the iron impurities adsorbed on the electromagnetic rod is realized through the air cylinder. The structural setting is very ingenious and convenient to use;

[0028] 3) A reciprocating mechanism and a reciprocating plate are also provided in the present invention. On the one hand, the mixed liquid can be stirred through the reciprocating plate, and on the other hand, the cleaning of iron impurities can be realized in cooperation, and the structure is reasonable. Description of the drawings

[0029] Figure 1 is the flow chart of the present invention;

[0030] Figure 2 is the structural diagram of the iron screening device in the present invention

[0031] Figure 3 is Figure 2 the A-A cross-sectional view in

[0032] Figure 4 and Figure 5 are both the layout diagrams of the electromagnetic rod and the air duct;

[0033] Figure 6 is the top view of the reciprocating plate in the present invention;

[0034] Among them, there are a crushing device 1, a ball milling device 2, an iron screening device 3, a reaction device 4, a solid-liquid separation device 5, a drying device 6, a packaging device 7, an iron screening box 301, a liquid inlet pipe 302, a liquid outlet pipe 303, an electromagnetic rod 304, a wire 305, a relay 306, an upper end cover 307, a wind cylinder 308, an air outlet 309, an air duct 310, a blowing device 311, a liquid extraction pump 312, a solenoid valve 313, a transition gap 314, a reciprocating mechanism 315, a reciprocating plate 316, a discharge pipe 317, and a material suction pump 318. Detailed implementation mode

[0035] The following further clarifies the present invention in conjunction with the accompanying drawings and specific embodiments. These embodiments are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0036] As Figure 1 shown, a production line for preparing iron oxide pigments includes a crushing device 1, a ball milling device 2, an iron screening device 3, a reaction device 4, a solid-liquid separation device 5, a drying device 6, and a packaging device 7 arranged in sequence.

[0037] As Figure 2 shown, the iron screening device 3 includes an iron screening box 301. A liquid inlet pipe 302 is arranged on the left side of the upper end of the iron screening box 301, and a liquid outlet pipe 303 is arranged on the right side of the lower end. An electromagnetic rod 304 extending downward is installed at the upper end cover 307 of the iron screening box 301. The electromagnetic rods 304 are evenly arranged in the iron screening box 301. The upper end of each electromagnetic rod 304 is correspondingly connected to a relay 306 through a wire 305;

[0038] As Figure 3 shown, a wind cylinder 308 extending downward is also installed at the upper end cover 307 of the iron screening box 301. The wind cylinder 308 is a vertical cylindrical structure. The lower end of the wind cylinder 308 is closed. An air flow channel is arranged inside the wind cylinder 308. The wind cylinders 308 are evenly arranged in the iron screening box 301, and the wind cylinders 308 and the electromagnetic rods 304 are arranged at intervals. Each wind cylinder 308 is also provided with an air outlet 309, and the position of the air outlet 309 is aligned with the adjacent electromagnetic rod 304. The air flow ejected from the wind cylinder 308 blows towards the electromagnetic rod 304 through the air outlet 309.

[0039] As Figure 4 and Figure 5 shown, the positions of the wind cylinders 308 and the electromagnetic rods 304 in the iron screening box 301 are correspondingly arranged. Four wind cylinders 308 are arranged around each electromagnetic rod 304, and four electromagnetic rods 304 are also arranged around each wind cylinder 308; the wind cylinders 308 and the electromagnetic rods 304 are arranged at uniform intervals.

[0040] At the upper end of each air duct 308, an air pipe 310 is correspondingly installed, and a blower device 311 is correspondingly installed on the air pipe 310. External air is introduced into the air duct 308 through the blower device 311 and then ejected from the air outlet 309.

[0041] A liquid extraction pump 312 and a solenoid valve 313 are also installed on the liquid outlet pipe 303.

[0042] The lower end of the air outlet duct 308 is set at the same height as the lower end of the electromagnetic rod 304, and there is a transition gap 314 between the lower end of the air outlet duct 308 and the bottom of the electromagnetic rod 304 and the bottom of the iron screening box 301.

[0043] As Figure 6 shown, a reciprocating mechanism 315 is also provided on the left side of the lower end of the iron screening box 301. The main shaft of the reciprocating mechanism 315 extends into the iron screening box 301, and a reciprocating plate 316 is installed at the shaft end. The reciprocating plate 316 is located in the transition gap 314. Under the action of the reciprocating mechanism 315, the reciprocating plate 316 moves correspondingly to the right, pushing the fallen iron filings to the right.

[0044] A vertically downward discharge pipe 317 is also installed at the right lower end of the iron screening box 301; the reciprocating mechanism 315 pushes the fallen iron filings to the discharge pipe 317; a solenoid valve 313 and a material suction pump 318 are installed on the discharge pipe 317.

[0045] The specific working steps of the production line of the iron oxide pigment of the present invention are the same as those of the prior art. The most important innovation point of the present invention is that the specific structure and usage method of the iron screening device are designed in detail, as follows:

[0046] During specific use, the mixed liquid of the iron oxide pigment is fed into the iron screening box from the liquid inlet pipe, and then the electromagnetic rod is turned on through the relay to make the electromagnetic rod charged to generate magnetic force. Then the iron impurities in the mixed liquid are correspondingly adsorbed on the electromagnetic rod. And in the above process, in order to prevent the iron impurities in the mixed liquid from precipitating and not being adsorbed on the electromagnetic rod, the reciprocating plate arranged in the transition gap can also reciprocate, and the liquid is stirred by the reciprocating plate to prevent the precipitation of iron impurities, thereby improving the adsorption efficiency and quality of iron impurities and preventing any missed iron impurities.

[0047] After the adsorption is completed, the liquid can be discharged by first opening the solenoid valve and the liquid extraction pump on the liquid outlet pipe, and then the iron impurities can be cleaned and discharged.

[0048] First, cut off the power supply of the electromagnetic rod through the relay. After the power supply of the electromagnetic rod is cut off, some iron impurities will fall to the bottom of the iron screening box, but there will still be some impurities adsorbed on the electromagnetic rod. At this time, turn on the air blowing device to blow air into the air duct, and then a jet of air will be ejected from the air duct. Since the air duct and the electromagnetic rod are evenly spaced, each electromagnetic rod is equipped with air ducts in four directions, and the air outlets on the air ducts are all aligned with the electromagnetic rod. Therefore, the ejected jet of air directly impinges on the electromagnetic rod, blowing off the iron impurities and other substances adhering to the electromagnetic rod completely, ensuring that no iron impurities remain on the electromagnetic rod and effectively removing these difficult-to-remove impurities.

[0049] Next, it is necessary to remove these removed impurities from the iron screening box. First, water can be directly flushed into the iron screening box, and the impurities can be directly discharged from the liquid outlet pipe by flushing. However, since the iron impurities will precipitate, it is possible that the iron impurities cannot be effectively discharged.

[0050] At this time, the reciprocating mechanism can be used to drive the reciprocating plate to push to the right. When driving the reciprocating plate to move, the impurities at the bottom of the box are pushed to the right, gradually driving the impurities to move to the right position, and then they can be discharged through the liquid outlet pipe. In addition, in order to prevent the liquid and impurities from being discharged through the liquid outlet pipe and mixing, a discharge pipe is additionally provided, and the impurities are discharged separately through the discharge pipe, and the structure is reasonable.

[0051] The above specific implementation manners are only a preferred embodiment of the present invention, and are not used to limit the implementation and the scope of the claims of the present invention. Any equivalent changes and modifications made according to the scope of the patent application protection content of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A production line for preparing iron oxide pigments, characterized in that: It includes a crushing device (1), a ball milling device (2), an iron screening device (3), a reaction device (4), a solid-liquid separation device (5), a drying device (6) and a packaging device (7) arranged in sequence; the iron screening device (3) includes an iron screening box (301), a liquid inlet pipe (302) is arranged on the left side of the upper end of the iron screening box (301), a liquid outlet pipe (303) is arranged on the right side of the lower end, and an electromagnetic rod (304) extending downward is installed at the upper end cover (307) of the iron screening box (301), and the electromagnetic rods (304) are evenly arranged in the iron screening box (301), and the upper ends of the electromagnetic rods (304) are correspondingly connected to a relay (306) through wires (305); A wind cylinder (308) extending downward is also installed at the upper end cover (307) of the iron screening box (301), the wind cylinder (308) is of a vertical cylindrical structure, the lower end of the wind cylinder (308) is closed, an air flow channel is arranged inside the wind cylinder (308), and the wind cylinders (308) are evenly arranged in the iron screening box (301), and the wind cylinders (308) and the electromagnetic rods (304) are arranged at intervals, an air outlet (309) is arranged on each wind cylinder (308), and the position of the air outlet (309) is aligned with the adjacent electromagnetic rod (304), and the air flow ejected from the wind cylinder (308) blows to the electromagnetic rod (304) through the air outlet (309).

2. The production line for preparing an iron oxide pigment according to claim 1, wherein: The positions of the wind cylinders (308) and the electromagnetic rods (304) in the iron screening box (301) are correspondingly arranged. Four wind cylinders (308) are arranged around each electromagnetic rod (304), and four electromagnetic rods (304) are also arranged around each wind cylinder (308); the wind cylinders (308) and the electromagnetic rods (304) are evenly arranged at intervals.

3. The production line for preparing iron oxide pigments according to claim 1, wherein: A wind pipe (310) is correspondingly installed at the upper end of each wind cylinder (308), and a blower device (311) is correspondingly installed on the wind pipe (310). External air is introduced into the wind cylinder (308) through the blower device (311) and then ejected from the air outlet (309).

4. The production line for preparing an iron oxide pigment according to claim 1, characterized in that: A liquid extraction pump (312) and a solenoid valve (313) are also installed on the liquid outlet pipe (303).

5. The production line for preparing an iron oxide pigment according to claim 1, wherein: The lower end of the air outlet cylinder (308) is arranged at the same height as the lower end of the electromagnetic rod (304), and a transition gap (314) is left between the lower ends of the air outlet cylinder (308) and the electromagnetic rod (304) and the bottom of the iron screening box (301).

6. The production line for preparing an iron oxide pigment according to claim 5, wherein: A reciprocating mechanism (315) is also arranged on the left side of the lower end of the iron screening box (301). The main shaft of the reciprocating mechanism (315) extends into the iron screening box (301), and a reciprocating plate (316) is installed at the shaft end. The reciprocating plate (316) is located in the transition gap (314), and the reciprocating plate (316) moves correspondingly to the right under the action of the reciprocating mechanism (315) to push the fallen iron filings to the right.

7. The production line for preparing iron oxide pigments according to claim 6, wherein: A vertically downward discharge pipe (317) is also installed at the lower right side of the iron screening box (301); the reciprocating mechanism (315) pushes the fallen iron filings to the discharge pipe (317).

8. The production line for preparing an iron oxide pigment according to claim 7, wherein: An electromagnetic valve (313) and a suction pump (318) are installed on the discharge pipe (317).

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