Lime slaking and separating system for producing light calcium carbonate

Abstract

The utility model discloses a lime slaking and separating system for producing light calcium carbonate. The lime slaking and separating system comprises an elevator feeding device, a lime slaking machine device, a coarse pulp sieve, a purifier and a slag discharging tank. The elevator feeding device comprises an elevator, a storage hopper, a bar valve and a speed regulation belt weigher; the lime slaking machine device comprises a motor power device, a connecting plate, a rotating shaft with blades, a feed port, a rolling ring, a slaking cylinder, a riding wheel device, a discharge port, a filter screen and a slag outlet, the slaking cylinder comprises an outer cylinder and an inner cylinder, the rolling rotating shaft with the blades is arranged in the slaking cylinder, the blades are arranged to be a feed slaking area and a milk slag discharge separation area respectively, and the rolling ring is arranged in the outer cylinder. And a slag salvaging and discharging device is arranged at the tail part. The lime slaking and separating system is energy-saving, environment-friendly, high in slaking efficiency, convenient to operate, high in production capacity, low in labor intensity and applicable to other types of calcium.

Description

Technical Field

[0001] The utility model relates to the technical field of quicklime digestion in light calcium carbonate production, in particular to a lime digestion and separation system for light calcium carbonate production. Background Art

[0002] Light calcium carbonate is a new environmentally friendly building material with wide application, mainly used in the manufacture of building materials such as walls, roofs, floors, partitions, etc. Lime is an important raw material in industries such as building materials, steel smelting, pulp manufacturing, and fertilizer production. The digestion of lime in industry is first to calcine limestone at high temperature to generate calcium oxide, then to be selected and digested with water in a certain proportion, and then react with water to generate calcium hydroxide, which is purified, separated, and deslagging, and then centrifuged and dried to obtain it.

[0003] In the production process of light calcium carbonate, the ash produced includes overburned limestone, raw burnt limestone, coal slag and other particles of uneven coarseness and fineness, all of which need to go through the digestion machine for grinding, crushing, slag removal and subsequent lime milk refining process to obtain finer lime milk.

[0004] The traditional process of lime digestion is to use a digester to digest lime. Lime is placed in a cement or iron plate container, water is added and stirred, and the reaction generates a calcium hydroxide suspension. This process has the disadvantages of not being able to produce continuously, high economic costs, high labor intensity, unstable product quality, and difficulty in slag discharge. The ash water generated during the production process is also easy to pollute the environment. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a lime digestion and separation system for the production of light calcium carbonate. The system further performs constant speed and quantitative digestion, separation, slag removal and purification on the ash selected by the vibration screen, which is beneficial to improving the energy utilization efficiency of the drum rotation in the digestion machine device, improving the digestion reaction efficiency, saving energy and protecting the environment, and avoiding ash water overflow and pollution of the environment.

[0006] The technical scheme of the utility model is as follows: a lime digestion and separation system for light calcium carbonate production is provided; the system comprises: an elevator feeding device, a ash dissolving device, a coarse pulp screen, and a purifier; the elevator feeding device comprises an elevator, a storage funnel, a rod valve, and a speed-regulating belt scale; the ash dissolving device comprises a motor device, a connecting plate, a rotating device with blades, a feed inlet, a rolling ring, a digestion cylinder, a supporting wheel device, a base, a filter screen, a hose, a discharge port, and a slag discharge port; the digestion cylinder comprises an outer cylinder and an inner cylinder, a rotating device with blades is provided inside the digestion cylinder, the rotating device comprises a rotating shaft with blades and blades, the rotating device with blades is respectively arranged in a feed digestion zone and a milk residue discharge separation zone, and a slag scooping and slag discharge device is provided at the tail. The elevator feeding device transports the ash to the storage hopper through the elevator, opens the bar valve, controls the speed-adjustable belt scale to transport the ash to the ash dissolving device at a constant speed and quantity, drives the blades to rotate through the motor device, and drives the rotating shaft of the digestion cylinder to rotate the cylinder to achieve the digestion and mixing method of cutting and crushing, and then passes through the coarse pulp screen, the quicklime blocks contact with water in the cylinder and absorb water before digestion, the lime milk flows out of the discharge port through the screen holes, and the over-burned and raw-burned lime that cannot be digested is discharged from the cylinder by the slag removal device outside the outer cylinder. The coarse pulp obtained by separation and slag removal of the coarse pulp screen and purification by the purifier is directly transported to the lime milk refining system, and the ash and impurities discharged from the tail of the cylinder are directly transported to the slag discharge pool.

[0007] Furthermore, in the lime digestion and separation system for light calcium carbonate production, the speed-adjustable belt scale in the elevator feeding device is connected to the digestion cylinder in the ash machine device.

[0008] Furthermore, a lime digestion and separation system for the production of light calcium carbonate is described; the tail of the digestion cylinder in the ash machine device is connected to the coarse pulp screen through a hose, which is used to discharge the lime milk digested in the digestion cylinder into the coarse pulp screen.

[0009] Furthermore, the lime digestion and separation system for light calcium carbonate production is characterized in that the discharge port of the coarse pulp screen is connected to the feed port of the coarse pulp pool of the lime milk refining system to ensure the uniformity of the quicklime coarse pulp flowing into the coarse pulp pool.

[0010] Furthermore, a lime digestion and separation system for the production of light calcium carbonate; the purifier is connected to the ash dissolving machine device through a pipeline, the purpose of which is to suck the steam dust generated by the digestion of quicklime into the purifier device, use a large amount of water to adsorb and precipitate the dust in the steam, and thus separate it from the steam. After multi-stage separation, the remaining steam is finally discharged from the pipeline, thereby optimizing the dust removal effect and reducing environmental pollution.

[0011] Furthermore, a lime digestion and separation system for the production of light calcium carbonate; the slag discharge pool is connected to the slag outlet in the ash-making machine device, the purpose of which is to discharge the large-particle lime slag screened by the filter in the ash-making machine device from the tail of the digestion cylinder and transport it to the slag discharge pool for collection.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: 1. The hoist feeding device in the utility model can deliver ash particles to the digester at a constant speed and in a fixed quantity, which is convenient and intelligent to operate, and is convenient for lime digestion operations with better quality; 2. The dust removal cover in the purifier in the utility model is connected to the top of the outer cylinder in the ash digester device through a pipeline to prevent the overflow of ash particles and dust, and uses a large amount of water to absorb dust particles to avoid environmental pollution, which is beneficial to energy saving and environmental protection. In short, the technical solution adopted by the utility model improves the digestion efficiency of lime and optimizes the dust removal effect after digestion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the ash dissolving machine device in this embodiment;

[0015] Figure 3 It is a cross-sectional plan view of the bladed rotating device in the digestion cylinder in this embodiment.

[0016] In the figure: 1. elevator feeding device; 2. ash dissolving machine device; 3. coarse pulp screen; 4. purifier; 5. slag discharge pool; 11. elevator; 12. storage funnel; 13. rod valve; 14. speed-adjusting belt scale; 21. motor device; 22. connecting plate; 23. rotating device with blades; 24. feed inlet; 25. rolling ring; 26. digestion cylinder; 27. supporting wheel device; 28. base; 29. ​​filter screen; 210. hose; 211. discharge port; 212. slag discharge port; 23-1. rotating shaft with blades; 23-1. blades; 27-1. support roller; 27-2. ear plate. DETAILED DESCRIPTION

[0017] The following will be combined with the attached Figure 1-Figure 3 The utility model is described in more detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1-Figure 3As shown, a lime digestion and separation system for light calcium carbonate production is provided, including an elevator device 1 and an elevator 11, a storage funnel 12, a rod valve 13, and a speed-regulating belt scale 14 therein; it also includes a ash dissolving machine device 2 and a motor device 21, a connecting plate 22, a rotating device with blades 23, a feed inlet 24, a rolling ring 25, a digestion cylinder 26, a supporting wheel device 27, a base 28, a filter screen 29, a hose 210, a discharge port 211, and a slag discharge port 212 therein; it also includes a coarse pulp screen 3, a purifier 4 and a slag discharge pool 5.

[0019] Reference Figure 2 As shown, the motor device 21 and the rotating device 23 with blades are fixedly connected to the connecting plate 22, and the connecting plate 22 is fixed on the base 28. A supporting wheel device 27 is installed on the base 28. The supporting wheel device 27 is used to fix the digestion cylinder 26. Two rolling rings 25 are placed on the digestion cylinder 26. The digestion cylinder 26 is provided with a feed port 24, a discharge port 211, a filter screen 29 and a slag discharge port 212. The feed port 24 is connected to the speed-regulating belt scale 14 and is connected to the purifier 4 through a pipeline. The coarse lime milk slurry filtered by the filter screen 29 flows into the coarse pulp screen 3 through a hose 210 to reach the coarse pulp pool. The outer cylinder tail (right port) of the digestion cylinder 26 is provided with a slag discharge port 212, and the ash and impurities discharged from the slag discharge port 212 flow into the slag discharge pool 5.

[0020] Reference Figure 3 It is a cross-sectional plan view of a bladed rotating device in a digestion cylinder. A tug device 27 is fixed to a base 28 in the ash disintegrator device 2, including a support roller 27-1 and an ear plate 27-2. A digestion cylinder 26 is placed on the support roller 27-1. A bladed rotating device 23 is provided inside the digestion cylinder 26, including a bladed rotating shaft 23-1 and blades 23-2. A feed port 24 is provided at the upper end of the outer cylinder of the digestion cylinder 26, which is connected to the speed-regulating belt scale 14 in the elevator device 1.

[0021] The elevator feeding device 1 conveys the ash to the storage hopper 12 through the elevator 11, opens the bar valve 13, controls the speed-adjustable belt scale 14 to convey the ash to the ash dissolving device 2 at a constant speed and quantity, drives the blades to rotate through the motor device 21, and drives the rotating shaft of the digestion cylinder to rotate the cylinder to realize the digestion and stirring method of cutting and crushing, and then passes through the coarse pulp screen 3, the quicklime blocks contact with water in the cylinder and absorb water before digestion, and the lime milk flows out of the discharge port through the sieve holes, and the over-burned and raw-burned lime that cannot be digested is discharged from the cylinder by the slag removal device outside the outer cylinder. The coarse pulp obtained by separation and slag removal by the coarse pulp screen 3 and purification by the purifier 4 is directly transported to the lime milk refining system, and the ash and impurities discharged from the tail of the cylinder are directly transported to the slag discharge pool 5.

[0022] The disclosure of the above embodiments is only a preferred specific implementation of the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined in the present invention can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the protection scope of the present invention is not limited thereto, but should conform to the widest scope consistent with the principles and novel features disclosed in the present invention.

Claims

1. A lime digestion and separation system for light calcium carbonate production, characterized in that; The system comprises: an elevator feeding device (1), a ash dissolving device (2), a coarse pulp screen (3), and a purifier (4); the elevator feeding device (1) comprises an elevator (11), a storage hopper (12), a rod valve (13), and a speed-adjustable belt scale (14); the ash dissolving device (2) comprises a motor device (21), a connecting plate (22), a rotating device with blades (23), a feed port (24), a rolling ring (25), a digestion cylinder (26), and a supporting wheel device (2 7), a base (28), a filter screen (29), a hose (210), a discharge port (211), and a slag discharge port (212); the digestion cylinder (26) comprises an outer cylinder and an inner cylinder, a rotating device (23) with blades is provided inside the digestion cylinder (26), the rotating device (23) comprises a rotating shaft (23-1) with blades and blades (23-2), the rotating device (23) with blades is respectively arranged in the feed digestion zone and the milk residue discharge separation zone, and a slag scooping and slag discharge device is provided at the tail.

2. A lime digestion and separation system for light calcium carbonate production according to claim 1, characterized in that: The speed-adjustable belt scale (14) in the elevator feeding device (1) is connected to the digestion cylinder (26) in the ash disintegrating device (2).

3. The lime digestion and separation system for light calcium carbonate production according to claim 1, characterized in that: The tail of the digestion cylinder (26) in the ash dissolving machine device (2) is connected to the coarse pulp screen (3) through a hose, which is used to discharge the lime milk digested in the digestion cylinder (26) into the coarse pulp screen (3).

4. The lime digestion and separation system for light calcium carbonate production according to claim 1, characterized in that: The discharge port of the coarse stock screen (3) is connected to the feed port of the coarse stock tank of the lime milk refining system, so as to ensure the uniformity of the quicklime coarse stock flowing into the coarse stock tank.

5. The lime digestion and separation system for light calcium carbonate production according to claim 1, characterized in that: The purifier (4) is connected to the lime dissolving machine device (2) through a pipeline, and its purpose is to suck the steam dust generated by the digestion of quicklime into the purifier (4) device, and use a large amount of water to adsorb and precipitate the dust in the steam, thereby separating it from the steam.

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