Calcium carbonate powder modification reaction device

Abstract

The utility model discloses a calcium carbonate powder modification reaction device, which comprises a kettle body with a jacket, a stirring paddle and a motor, the stirring paddle and the motor are positioned in the kettle body, a first feeding pipe, a second feeding pipe and a third feeding pipe are arranged at the top of the kettle body, one end of the second feeding pipe extends into the kettle body, and the other end of the second feeding pipe extends into the kettle body. A second feeding pipe is arranged at one end of the kettle body, a blower is arranged at the other end of the second feeding pipe, a discharging bin is arranged in the middle of the second feeding pipe, a first spraying pipe is arranged in the kettle body and communicated with the third feeding pipe, an air outlet is formed in the middle of the kettle body, and a discharging pipe is arranged at the bottom of the kettle body. According to the utility model, not only is the reaction efficiency of calcium carbonate powder improved, but also the problem of incomplete modification is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium carbonate production, in particular to a calcium carbonate powder modification reaction device. Background Art

[0002] In order to reduce the surface energy of nano-calcium carbonate, improve its dispersibility and make its surface lipophilic, it is necessary to modify the surface of nano-calcium carbonate. The modifiers used are mainly fatty acids and their salts, which have poor water solubility and a density lower than that of calcium carbonate slurry. Therefore, they always float on the calcium carbonate slurry in the reaction vessel, resulting in long reaction time, low efficiency and unstable quality. Patent 202023340139.0 discloses a powder modification reaction device, which avoids the suspension problem caused by wet reaction by arranging a spray component and a blast component in the reaction chamber, and realizes a rapid reaction between the powder and the modifier spray. However, the spray reaction is uneven, and there is a problem that the powder is not modified, so further improvement is needed. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of low reaction efficiency and incomplete reaction in the prior art and to provide a calcium carbonate powder modification reaction device with fast reaction speed and good modification effect.

[0004] The purpose of the utility model is achieved through the following technical solutions: a calcium carbonate powder modification reaction device, comprising a kettle body provided with a jacket, a stirring paddle and a motor located in the kettle body, a first feed pipe, a second feed pipe and a third feed pipe are arranged on the top of the kettle body, one end of the second feed pipe extends to the inside of the kettle body, a blower is arranged on the other end of the second feed pipe, a discharge bin is arranged in the middle of the second feed pipe, a first spray pipe is arranged in the kettle body, the first spray pipe is connected to the third feed pipe, an air outlet is arranged in the middle of the kettle body, and a discharge pipe is arranged at the bottom of the kettle body.

[0005] Furthermore, a first circulation pipe is provided on the kettle body, one end of which is connected to the upper liquid surface in the kettle body, and the other end of which is connected to the third feed pipe. A first circulation pump and a first valve are provided on the first circulation pipe, and a second valve is provided at the feed end of the third feed pipe.

[0006] Furthermore, the kettle body is also provided with a second circulation pipe, a second spray pipe and a second circulation pump. The second spray pipe is located in the kettle body, one end of the second circulation pipe is connected to the bottom of the kettle body, and the other end of the second circulation pipe is connected to the second spray pipe. The second circulation pump is located in the middle of the second circulation pipe.

[0007] Furthermore, a blade capable of disturbing airflow is arranged in the kettle body, the blade is fixedly connected to the rotating shaft of the stirring paddle, and the blade is located above the first spray pipe.

[0008] The utility model has the following advantages: by combining dry modification with wet modification, not only the reaction efficiency is improved, but also the problem of incomplete modification is avoided; the arrangement of the first circulation pipe and the first circulation pump can make the modifier suspended on the liquid surface sprayed into droplets again to react with the powder, shortening the reaction time and improving the reaction efficiency; the arrangement of the second circulation pump and the second spray pipe can make the unmodified powder at the bottom of the kettle body sprayed into droplets to react with the sprayed modifier, further increasing the contact area and accelerating the reaction efficiency; the arrangement of the blades can not only break up the powder sprayed from the second feeding pipe, but also disturb the airflow in the kettle body, accelerate the contact between the powder and the droplets, and between the droplets, and further improve the reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0010] In the figure, 1, kettle body; 2, jacket; 3, first feed pipe; 4, second feed pipe; 5, discharge bin; 6, blower; 7, third feed pipe; 8, first spray pipe; 9, discharge pipe; 10, motor; 11, stirring paddle; 12, air outlet; 13, first circulation pump; 14, first circulation pipe; 15, first valve; 16, second valve; 17, second spray pipe; 18, second circulation pipe; 19, second circulation pump; 20, blades. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0012] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0013] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] like Figure 1 As shown, a calcium carbonate powder modification reaction device comprises a kettle body 1 provided with a jacket 2, a stirring paddle 11 located in the kettle body 1, a motor 10, a blower 6, a discharge bin 5, a first circulation pump 13, a first circulation pipe 14, a second circulation pump 19, a second circulation pipe 18, a first spray pipe 8, a second spray pipe 17, and blades 20. A first feed pipe 3, a second feed pipe 4, and a third feed pipe 7 are arranged on the top of the kettle body 1. The first feed pipe 3 is connected to pure water, one end of the second feed pipe 4 extends to the inside of the kettle body 1, and a blower 6 is installed at the other end of the second feed pipe 4. The discharge bin 5 is installed in the middle of the second feed pipe 4. The discharge bin 5 stores calcium carbonate powder. The discharge bin 5 controls the speed of the powder entering the second feed pipe 4 through a valve. The third feed pipe 7 is connected to the modifier. The first spray pipe 8 and the second spray pipe 9 are both located in the kettle body 1 and are both located at the outlet of the second feed pipe 4. The first spray pipe 8 is connected to the third feed pipe 7 below the opening, the air outlet 12 is provided in the middle of the kettle body 1, and the air outlet 12 is located above the solution in the kettle body 1. One end of the first circulation pipe 14 is connected to the upper part of the liquid surface in the kettle body 1 to absorb the modifier floating on the liquid surface, and the other end of the first circulation pipe 14 is connected to the third feed pipe 7. The first circulation pump 13 and the first valve 15 are installed on the first circulation pipe 14. The feeding end of the third feed pipe 7, that is, the main pipeline is installed with a second valve 16 to control the on-off of the entire pipeline. One end of the second circulation pipe 18 is connected to the bottom of the kettle body 1, and the other end of the second circulation pipe 18 is connected to the second spray pipe 17. The second circulation pump 19 is installed on the second circulation pipe 18. The blade 20 is a fan blade. The blade 20 is coaxially arranged with the stirring paddle 11. The blade 20 is located above the first spray pipe 8 and the second spray pipe 17. The discharge pipe 9 is installed at the bottom of the kettle body 1.

[0015] The working principle of the utility model is as follows: the water-insoluble modifier is sprayed into the kettle body through the third feed pipe and the first spray pipe, the fan is started, and the valve of the discharge bin is controlled so that the airflow drives the powder to be sprayed into the kettle body, the droplet-shaped modifier contacts the powder and performs the first contact reaction, and the unreacted modifier and the powder fall into the bottom of the kettle body, and pure water is introduced into the kettle body through the first feed pipe. The mixed liquid at the bottom of the kettle body performs a secondary contact reaction under the action of the stirring paddle. Since the unreacted modifier will be suspended on the liquid surface, the powder mixed liquid at the bottom is reacted by the second circulation pump and the second spray pipe. The liquid droplets are sprayed above the liquid surface, and the powder mixture contacts the modifier floating on the liquid surface during the sinking process and undergoes a third contact reaction. The first circulation pump is started, and the first circulation pipe extracts the unreacted modifier on the liquid surface and sprays it into the kettle again. The droplet-shaped modifier and the droplet-shaped powder mixture undergo a fourth contact reaction. Through the four contact reactions, the reaction efficiency is improved and the reaction is made more thorough. The setting of the blades can not only break up the falling powder, but also disturb the airflow in the kettle, accelerate the contact between the powder and the droplets, and between the droplets, and further improve the reaction efficiency.

[0016] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A calcium carbonate powder modification reaction device, characterized in that: The invention comprises a kettle body (1) provided with a jacket (2), a stirring paddle (11) and a motor (10) located in the kettle body (1); a first feed pipe (3), a second feed pipe (4) and a third feed pipe (7) are arranged at the top of the kettle body (1); one end of the second feed pipe (4) extends into the interior of the kettle body (1); a blower (6) is arranged at the other end of the second feed pipe (4); a discharge bin (5) is arranged in the middle of the second feed pipe (4); a first spray pipe (8) is arranged in the kettle body (1); the first spray pipe (8) is connected to the third feed pipe (7); an air outlet (12) is arranged in the middle of the kettle body (1); and a discharge pipe (9) is arranged at the bottom of the kettle body (1).

2. A calcium carbonate powder modification reaction device according to claim 1, characterized in that: The kettle body (1) is also provided with a first circulation pipe (14), one end of which is connected to the upper part of the liquid surface in the kettle body (1), and the other end of which is connected to the third feed pipe (7). The first circulation pipe (14) is provided with a first circulation pump (13) and a first valve (15), and a second valve (16) is provided at the feed end of the third feed pipe (7).

3. A calcium carbonate powder modification reaction device according to claim 2, characterized in that: The kettle body (1) is also provided with a second circulation pipe (18), a second spray pipe (17), and a second circulation pump (19); the second spray pipe (17) is located in the kettle body (1); one end of the second circulation pipe (18) is connected to the bottom of the kettle body (1); the other end of the second circulation pipe (18) is connected to the second spray pipe (17); and the second circulation pump (19) is located in the middle of the second circulation pipe (18).

4. A calcium carbonate powder modification reaction device according to claim 1, characterized in that: The kettle body (1) is provided with a blade (20) capable of disturbing airflow. The blade (20) is fixedly connected to the rotating shaft of the stirring paddle (11). The blade (20) is located above the first spray pipe (8).

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