A ceramic raw material acquisition system and method applied to the deep-sea ore collection process

Abstract

The present invention provides a ceramic raw material acquisition system and method applied to the deep-sea ore-collecting process. The system is arranged on a deep-sea ore-collecting mother ship and is used to collect and process the sediments generated by the disturbance during the ore-collecting process to obtain ceramic raw materials. It includes a polymetallic nodule screening device, a pretreatment device, a calcium source extraction device, and a mud material acquisition device that are connected in sequence. The polymetallic nodules are screened out from the solid-liquid waste by a vibrating screen. The solid-liquid waste is dehydrated by a sedimentation centrifuge to obtain sediments, which are then dried, and after drying, they are repeatedly washed to remove salts. The sediments after removing salts are dissolved in a dilute hydrochloric acid solution to dissolve the calcium substances and metal elements in the solution, and then filtered and separated to obtain sediments, and free water is removed to obtain ceramic mud. The present invention provides a new idea of bringing the solid-liquid waste generated by deep-sea ore collection back to the sea surface for utilization and applying it to ceramic preparation after treatment, without generating an emission plume due to directly discharging the solid-liquid waste generated by ore collection into the seabed.

Description

Technical Field

[0001] The present invention belongs to the technical field of deep - sea ore - collecting waste treatment, and particularly relates to a system and method for obtaining ceramic raw materials in the process of deep - sea ore - collecting. Background Art

[0002] The deep sea contains rich mineral resources. The reserves of polymetallic nodules alone reach tens of billions of tons. These resources are an important material basis for the future development of mankind and are indispensable important raw materials in new energy materials.

[0003] The ore - collecting technology is the primary link in the technical chain of the deep - sea mining system. Its main function is to walk on the soft soil surface of the seabed mining area along a predetermined trajectory, continuously collect the metallic nodule ores existing on the surface of the seabed sediments, and then the ores will be sent to the mother ship on the sea surface by the conveying system. During the deep - sea mining process, it is inevitable to disturb the seabed, causing sediment particles to be disturbed and suspended under the action of the flow field. Together with the polymetallic nodules, they are collected into the collection pipeline and then transported to the mother ship on the sea surface.

[0004] Deep - sea sediments are a rich mineral resource. The main component is clay minerals, which are one of the main raw materials for making ceramics. Secondly, they contain calcareous organisms and siliceous organisms and also consist of a small amount of rare earth elements. Due to the fact that deep - sea sediments are far from human activities, their purity is usually higher than that of land clay, and they are also finer than land clay, which makes the surface of ceramic products smoother and the details more delicate. In addition, they have the advantage of large adsorption capacity. The plasticity of deep - sea clay minerals is better than that of land clay, so that complex shapes and designs can be more conveniently shaped when making ceramics.

[0005] Usually, the collected sediments and deep - sea water have no application value. They are directly discharged to the seabed as solid - liquid waste after being separated from the polymetallic nodules. However, under the action of strong disturbance, deep - sea plumes will be formed, which will seriously pollute the sea area and affect the survival of marine organisms. According to statistics, each polymetallic nodule ore - collecting machine produces 400 tons of solid particles suspended in 50,000 tons of wastewater every day. Therefore, there is an urgent need for a green and environmentally friendly method for utilizing solid - liquid waste. Summary of the Invention

[0006] In order to solve the problems in the background art, the present invention designs a method and system for processing solid - liquid waste generated from deep - sea ore - collecting into ceramic raw materials. Compared with land minerals, deep - sea sediments have natural advantages such as high purity, fine particles, high plasticity and large adsorption capacity. Processing them can improve the functionality of the raw materials for making ceramics.

[0007] The first aspect of the present invention provides a ceramic raw material acquisition system applied to the deep-sea ore collection process, which is arranged on a deep-sea ore collection mother ship and is used to collect and process the sediment generated by disturbance during the deep-sea ore collection process to obtain ceramic raw materials; it includes a polymetallic nodule screening device, a pretreatment device, a calcium source extraction device, and a mud material acquisition device connected in sequence;

[0008] The polymetallic nodule screening device includes a vibrating screen, a nodule discharge port, and a waste discharge port. The solid-liquid waste after separating the polymetallic nodules enters the pretreatment device through the waste discharge port;

[0009] The pretreatment device includes a sedimentation centrifuge, a soil drying device, and a salt removal device connected in sequence; the input end of the sedimentation centrifuge is connected to the waste discharge port, and the output end is connected to the soil drying device; the output end of the soil drying device is connected to the salt removal device;

[0010] The outlet of the salt removal device is connected to the calcium source extraction device. The calcium source extraction device has two layers, upper and lower. The upper layer contains dilute hydrochloric acid solution for dissolving calcium substances and metal elements in the solution; the lower layer is a filter layer for solid-liquid separation. The separated sediment is discharged through the sediment outlet and is connected to the mud material acquisition device. The mud material acquisition device is used to remove free water from the sediment to obtain plastic ceramic mud.

[0011] Preferably, the bottom of the calcium source extraction device is connected to a beaker reactor, and the beaker reactor contains sodium carbonate solution. The dissolved solution after solid-liquid separation enters the beaker reactor through the bottom outlet and reacts with the sodium carbonate solution to form a precipitate; at the same time, it also includes a funnel and a color sorter for separating the precipitate. The funnel is provided with filter paper for filtering the precipitate, and the filtered precipitate is separated by the color sorter into white calcium carbonate precipitate and other colored metal precipitates.

[0012] Preferably, the soil drying device is a surrounding pipeline arranged on a conveyor belt, and heating wires are wound around the pipeline to keep the sediment after the solid-liquid waste settles in a dry state and promote the precipitation of salts.

[0013] Preferably, the salt removal device is a washing box. A sediment inlet is arranged above one side of the washing box, and a washed sediment outlet is arranged on the other side. A conveyor belt is connected to the outlet; an adjustable-tension screen is arranged in the washing box, and both ends of the screen are connected to control pulleys. Slide rails adapted to the control pulleys are arranged on the inner wall of the box; a water pump, a water inlet, and a water outlet are arranged below the washing box; at the same time, a heating plate for heating the water in the washing box is installed at the bottom of the washing box.

[0014] Preferably, the calcium source extraction device is a U-shaped container, which is divided into upper and lower layers by an openable and closable partition. The upper layer contains dilute hydrochloric acid solution, and a stirring rod is installed on the side wall. The lower layer is a filter layer, and a filter plate is installed in the filter layer. One side of the filter plate is provided with a solid mud outlet, which is connected to a mud acquisition device; a feed plate with a sampling hole is installed at the top inlet of the U-shaped container.

[0015] Preferably, the mud acquisition device is a belt filter press.

[0016] The second aspect of the present invention provides a method for obtaining ceramic raw materials applied to the deep-sea ore collection process, which includes the following processes:

[0017] The jet nozzles in the front of the mining vehicle spray water onto the seabed to disturb the seabed. Under the drive of the rising water flow field, polymetallic nodules, sediments, and seawater are collected and transported to the mother ship;

[0018] Use a vibrating screen to screen out polymetallic nodules from solid-liquid waste;

[0019] The solid-liquid waste after separating polymetallic nodules is dehydrated by a sedimentation centrifuge to obtain sediments; the dehydrated sediments are dried to make them in a dry state and promote the precipitation of salts; the dried sediments are repeatedly washed to remove salts;

[0020] The sediments after removing salts are first dissolved in a dilute hydrochloric acid solution to dissolve calcium substances and metal elements in the solution. After dissolution, filtration is carried out. The separated sediments after filtration are subjected to a pressure filtration operation to remove free water to obtain plastic ceramic mud.

[0021] Preferably, it also includes the following process:

[0022] The filtered dissolved liquid is discharged into a sodium carbonate solution, reacts with the sodium carbonate solution to form a precipitate, the formed precipitate is filtered with filter paper, and the filtered precipitate is separated by a color sorter into white calcium carbonate precipitate and other colored metal precipitates.

[0023] Preferably, the device for repeatedly washing the dried sediments to remove salts is a washing box. A sediment inlet is provided above one side of the washing box, and a washed sediment outlet is provided on the other side. A conveyor belt is connected to the outlet; an adjustable-tension screen is provided in the washing box. Both ends of the screen are connected to control pulleys, and slide rails adapted to the control pulleys are provided on the inner wall of the box; a water pump, a water inlet, and a water outlet are provided below the washing box; at the same time, a heating plate for heating the water in the washing box is installed at the bottom of the washing box; the salts in the sediments are repeatedly washed by the adjustable-tension and liftable screen, and the water is changed when the salts are saturated. During the washing process, the water is heated by the heating plate to accelerate dissolution.

[0024] Preferably, the sediment after desalination slowly enters the dilute hydrochloric acid solution through a feed plate with a sampling hole to provide sufficient chemical reaction time, and the reaction rate is increased by stirring with a stirring rod until no bubbles are generated.

[0025] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0026] 1. The present invention provides a brand-new idea of bringing the solid-liquid waste generated by deep-sea ore collection back to the sea surface for processing and utilization, without directly discharging the solid-liquid waste generated by deep-sea ore collection into the seabed to produce an emission plume, effectively reducing the pollution and impact on the seabed environment.

[0027] 2. By applying the solid-liquid waste generated by deep-sea ore collection to ceramic preparation after processing, the present invention is conducive to optimizing the marine industrial structure, promoting the green development of the marine industry, saving land ore raw materials at the same time, and reducing the environmental impact caused by mining.

[0028] 3. The present invention uses a series of devices to remove impurities and separate deep-sea sediments. The obtained calcium carbonate calcium source can be used as an auxiliary agent, strengthening agent, etc., which has the effects of making the ceramic harder and increasing the density of the ceramic; clay minerals doped with siliceous organisms and a small amount of rare earth elements can also be obtained. Based on the characteristics of large adsorption and large activity of clay minerals, sintering and deformation are less likely to occur during the firing process. The contained siliceous organisms and a small amount of rare earth elements can enhance the compressive, abrasion-resistant, corrosion-resistant and other properties of the ceramic, as well as reduce the sintering temperature and time of the ceramic, and improve the sintering efficiency. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following description is only one embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 is the overall structural schematic diagram of the ceramic raw material acquisition system of the present invention;

[0031] Figure 2 is the structural schematic diagram of the multi-metal combination and solid-liquid waste collection during deep-sea ore collection of the present invention;

[0032] Figure 3 is the structural schematic diagram of the multi-metal nodule screening device of the present invention;

[0033] Figure 4 is the structural schematic diagram of the salt removal device of the present invention;

[0034] Figure 5 is a schematic structural diagram of a calcium source extraction device;

[0035] 100. Collection; 1. Polymetallic nodule screening device; 11. Waste discharge port; 12. Vibrating screen; 13. Nodule discharge port; 2. Pretreatment device; 21. Sedimentation centrifuge; 22. Soil drying device; 23. Salt removal device; 231. Sediment inlet; 232. Screen; 233. Water pump; 234. Heating plate; 235. Sediment outlet; 236. Control pulley; 237. Slide rail; 238. Water inlet; 239. Water outlet; 3. Calcium source extraction device; 31. Feed plate; 32. Upper reactor; 321. Stirring rod; 33. Partition; 34. Filter plate; 35. Solid mud discharge port; 36. Bottom outlet; 37. Beaker reactor; 38. Funnel; 4. Mud acquisition device. Specific embodiments

[0036] The following clearly and completely describes the technical solutions in the specific embodiments of the present invention with reference to the accompanying drawings in the present invention.

[0037] A ceramic raw material acquisition system applied to the deep - sea nodule collection process is set on a deep - sea nodule collection mother ship and is used to collect and process the sediments generated by the disturbance in the deep - sea nodule collection process to obtain ceramic raw materials. The overall structure is as Figure 1 shown, and it is composed of a polymetallic nodule screening device 1, a solid - liquid waste pretreatment device 2, a calcium source extraction device 3, and a mud acquisition device 4.

[0038] When the mining vehicle walking on the seabed is working, the jet nozzles installed in the front of the mining vehicle spray water jets onto the seabed to disturb the seabed; under the drive of the rising water flow field, polymetallic nodules, sediments, and seawater are collected into the collection port to complete the collection work. The collected substances enter the conveying pipeline and are transported to the mother ship on the sea surface; as Figure 2 shown.

[0039] As Figure 3 shown, the polymetallic nodule screening device includes a vibrating screen 12, a nodule discharge port 13, and a waste discharge port 11. The collection 100 uses a high - frequency vibrating screen to screen out polymetallic nodules from solid - liquid waste, obtains polymetallic nodules from the nodule discharge port 13, and discharges the solid - liquid waste from the waste discharge port 11;

[0040] The solid - liquid waste includes deep - sea water and deep - sea sediments; since the abundance of polymetallic nodules is related to the type of deep - sea sediments, the abundance of polymetallic nodules in calcareous ooze, siliceous clay, siliceous - calcareous ooze, and calcareous - siliceous mud is relatively high. Therefore, the main types of sediments collected are these types; the main components are clay minerals, followed by calcareous organisms and siliceous organisms, and also contain a small amount of rare earth elements;

[0041] The collected solid-liquid waste is pretreated by the solid-liquid waste pretreatment device 2 to remove seawater and the salt in the deep-sea sediment, so as to avoid affecting the stability and service life of the ceramic, etc.; the pretreatment device 2 includes a sedimentation centrifuge 21, a soil drying device 22 and a salt removal device 23; the input end of the sedimentation centrifuge 21 is connected to the waste discharge port 11, and the output end is connected to the soil drying device 22; the output end of the soil drying device is connected to the salt removal device 23;

[0042] Specifically, the sedimentation centrifuge 21 utilizes the density difference between the solid and liquid phases. In the centrifugal force field, the solid phase with a large density settles on the inner wall of the centrifuge drum, and the sediment is discharged outside the machine through the spiral conveyor in the drum. The liquid phase with a small density tends to the center of the drum and flows out from the overflow port of the machine, achieving the dehydration purpose of liquid-solid separation; at this time, the moisture content of the deep-sea sediment can be reduced to 30%-40%.

[0043] Furthermore, the soil drying device 22 is used to keep the deep-sea sediment in a dry state and promote the precipitation of the salt in the seawater, presenting a crystal state; the soil drying device 22 is not limited to a specific implementation structure, as long as it can complete the drying function, for example, the soil drying device is a surrounding pipeline arranged on the conveyor belt, and a heating wire is wound around the pipeline, so that the sediment after the solid-liquid waste settles is in a dry state and the salt is promoted to precipitate.

[0044] The salt removal device 23 in this embodiment can be a washing box, as Figure 4 shown, a sediment inlet 231 is arranged above one side of the washing box, and a washed sediment outlet 235 is arranged on the other side, and a conveyor belt is connected at the outlet; an adjustable-tension screen 232 is arranged in the washing box, both ends of the screen 232 are connected to the control pulleys 236, and slide rails 237 adapted to the control pulleys are arranged on the inner wall of the box body; a water pump 233, a water inlet 238 and a water outlet 239 are arranged below the washing box; at the same time, a heating plate 234 for heating the water in the washing box is installed at the bottom of the washing box.

[0045] The sediment from which seawater has been removed enters the screen 232 of the salt removal device 23 through the sediment inlet 231; the water pump 233 provides water source for dissolving the salt in the sediment; this device is provided with a heating plate 234, and the heat source comes from the heating wire. The higher the temperature, the faster the dissolution rate; in the present invention, the temperature of the heating plate 234 is set at about 120°. After being heated by the soil drying device 22, the heat carried by the deep-sea sediment can accelerate the dissolution rate and reduce the energy consumption of the heating wire.

[0046] Furthermore, because the salt dissolved in water is easily saturated, and the salt content in the deep-sea sediment is relatively high, reaching about 3.4%, so after a certain period of time, it is necessary to wash with fresh water 2-3 times;

[0047] Specifically, the screen 232 is connected to the track wall surface 237 through the control pulley 236. By controlling the height of the control pulley 236 and the length of the screen 232, the sediment settlement can be controlled, and thus repeated washing can be achieved. Before discharging the saturated water, the adjustable-tension screen 232 needs to be tightened first to prevent sediment particles from being discharged together when discharging the saturated water. For the adjustable-tension screen 232, those skilled in the art can achieve it without creative labor. For example, it can be manually tensioned, or a finished adjustable-tension screen can be purchased on the market. No specific structural limitation is made here.

[0048] Specifically, when it is clear water, the control pulley 236 is adjusted to the height of the lower inlet 238, and the screen is in the most relaxed state, so that the screen lies flat in the heating plate 234, which can make the water and sediment fully contact and accelerate the dissolution rate. When the saturated water is reached after a certain period of time, the control pulley 236 is adjusted to the height of the upper sediment inlet 231, and the screen is in a taut state, so that the screen is suspended in the wall. At this time, the water outlet 239 is opened, and after all the saturated water is discharged, the outlet switch is closed, and then the water pump 233 switch is opened again to fill it with water. Repeating the above steps can repeat the washing 2-3 times. After the washing is completed, the control pulley 236 is moved to the sediment outlet 235, and the control pulley 236 at the inlet is adjusted to a position higher than the sediment outlet 235, and at the same time, the screen is controlled to be taut. Under the action of the self-gravity of the sediment, it enters the conveyor belt and is transported to the next device for processing.

[0049] The salt removal device 23 is connected to the calcium source extraction device 3 at the rear end. The calcium source extraction device 3 is divided into upper and lower layers at intervals. The upper layer is filled with dilute hydrochloric acid solution for dissolving calcium substances and metal elements in the solution; the lower layer is a filter layer for solid-liquid separation. The separated sediment is discharged through the sediment outlet and is connected to the mud material acquisition device 4. The mud material acquisition device 4 is used to remove free water from the sediment to obtain plastic ceramic mud.

[0050] The calcium source extraction device 3 is used to extract the calcium source from calcareous organisms, and at the same time, it can also reduce iron and manganese metals in deep-sea sediments, which can avoid the occurrence of redox reactions of iron, manganese and other metal elements at high temperatures, which may affect the chemical stability and physical stability of ceramics. Calcareous organisms, such as shells and corals, are mainly composed of calcium carbonate (CaCO3), accounting for about 24% of the total content of deep-sea sediments, and are one of the important raw materials for making ceramics.

[0051] One realizable structure of the calcium source extraction device 3 is as Figure 5As shown, it is a U-shaped container and is divided into two layers, an upper layer and an lower layer, by an openable partition 33. The upper layer can be defined as an upper reactor 32, which contains a dilute hydrochloric acid solution and has a stirring rod 321 installed on the side wall. The lower layer is a filter layer, in which a filter plate 34 is installed. A solid mud outlet 35 is provided on one side of the filter plate, and is connected to a mud acquisition device 4. A feed plate 31 with an injection hole is installed at the top inlet of the U-shaped container.

[0052] Specifically, the conveyor belt transports the deep-sea sediments from the pretreatment device 2 to the calcium source extraction device 3 of the device, and enters the upper reactor 32 containing a dilute hydrochloric acid solution through the feed plate 31 with a sampling hole, where it can react with calcium carbonate and iron and manganese metals and dissolve in the solution to generate calcium chloride, ferric chloride and manganese chloride respectively; wherein, the aperture of the sampling hole is at the centimeter level, which allows the deep-sea sediment particles to slowly enter the upper reactor 32, providing sufficient time for chemical reactions; this reaction will produce gases such as carbon dioxide, which can be discharged from the feed plate 31; in addition, a stirring rod 321 is provided inside the upper reactor 32 to increase the reaction rate. If no bubbles are generated, it means that the reaction has stopped, and the middle partition 33 is opened. Under the action of the filter plate 34 with a diameter of nanometers, the solution leaks to the bottom of the U-shaped container and enters the beaker reactor 37 from the bottom outlet 36 to precipitate the calcium carbonate; while the sediment remains in the middle and is discharged from the solid mud outlet 35;

[0053] Furthermore, the beaker reactor 37 may contain a sodium carbonate solution, which may react with the calcium chloride, ferric chloride and manganese chloride in the solution to generate a precipitate; the precipitate may be obtained by filtering, that is, a round or square filter paper is first folded twice into a fan shape, and then unfolded into a cone shape, so that it fits tightly with the funnel 38; then a small amount of distilled water is used to wet the filter paper, and the upper clear liquid is first carefully poured into the funnel 38 along the glass rod against the side with more filter paper layers. After the transfer, the precipitate is washed with a small amount of washing liquid and fully stirred and settled; this is repeated more than three times, and the precipitate is transferred to the filter paper, and finally the container containing the precipitate is washed three times, and each time it is transferred to the funnel. In order to improve the washing efficiency, the principle of small amounts and multiple times should be adopted.

[0054] Furthermore, the color sorter can obtain white calcium carbonate precipitation by using the color difference. Calcium carbonate is an important material in the ceramic production process, accounting for 5%-15% of the total raw materials; it can be used as a raw material ratio regulator and plasticizer, and can also assist the sintering process and improve the crystallinity and crystal structure of the product, and can also improve the hardness, compression resistance and insulation of ceramic products.

[0055] Specifically, the precipitate in the funnel filter paper is fed into the hopper of the color sorter. Through the vibration of the vibrator device, the precipitate slides down along the channel, accelerates and falls into the observation area in the sorting chamber, and passes through between the sensor and the background plate. Under the action of the light source, according to the intensity and color change of the light, the system generates an output signal to drive the solenoid valve to work and blow out non-white particles into the waste cavity of the receiving hopper, while the white calcium carbonate precipitate continues to fall into the finished product cavity of the receiving hopper, so that the precipitate can be separated to obtain calcium carbonate precipitate. The use of the color sorter is a conventional technology in this field, and those skilled in the art are clear about its specific implementation method, which is not the focus of the present invention and will not be specifically elaborated here.

[0056] Furthermore, the reddish-brown iron hydroxide precipitate and black manganese carbonate precipitate in the waste cavity can be recycled into the polymetallic nodules screened out by the vibrating screen, and the recovered iron and manganese metals are further processed and utilized together with the polymetallic nodules.

[0057] The sediment discharged from the solid mud outlet 35 enters the device 4, which is a belt filter press for removing free water from the sediment to make it into a moldable mud.

[0058] The main components of the obtained mud are clay minerals, including illite, montmorillonite, etc., which are all high-quality raw materials for making ceramics. Deep-sea clay minerals have the characteristics of large adsorption and high activity, and can better adsorb moisture. Therefore, the ceramics made are less likely to crack and deform during the drying and firing processes; they can also adsorb more colors, making the colors of the ceramics more vivid and lasting; in addition, the clay with large adsorption force has good thermal stability at high temperatures, which makes it less likely to sinter and deform during the firing process.

[0059] The mud also contains siliceous organisms, such as diatomaceous earth, which contain a large amount of silicon dioxide and are mainly responsible for providing the silicon-oxygen framework to enhance the compressive, abrasion-resistant, and corrosion-resistant properties of the ceramics. In addition, it can also reduce the shrinkage rate during the ceramic firing process and improve the finished product rate; siliceous organisms can also increase the porosity of the ceramics, making it have better air permeability and moisture absorption.

[0060] In addition, the mud also contains a small amount of rare earth elements such as cerium, lanthanum, and neodymium, which can be used as the main components of ceramic pigments to make the ceramics show various vivid colors; rare earth elements can reduce the sintering temperature and time of the ceramics, improve the sintering efficiency, and thus improve the production efficiency and save energy.

[0061] The specific embodiments of the present invention are fully illustrated in conjunction with the accompanying drawings, enabling those skilled in the art to practice them. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The scope of the embodiments of the present invention includes the entire scope of the claims and all available equivalents of the claims. In the present invention, terms such as "first", "second", etc. are only used to distinguish one element from another, without requiring or implying any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the terms "comprising", "including" or any other variants thereof are intended to cover non-exclusive inclusion, such that a structure, device or equipment comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such structure, device or equipment. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the structure, device or equipment comprising the said element. In the present invention, each embodiment is described in a progressive manner, with each embodiment highlighting the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0062] The orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present invention is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present text and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In the description of the present text, unless otherwise specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. In the present invention, unless otherwise stated, the term "plurality" means two or more.

[0063] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Those skilled in the art should understand that based on the technical solutions of the present application, various modifications, deformations or equivalent replacements that can be made without creative efforts by those skilled in the art should all be included within the protection scope of the present application.

Claims

1. A ceramic raw material acquisition system applied to the deep-sea ore-collecting process, characterized in that: It is installed on the deep-sea ore-collecting mother ship and is used to collect and process the sediment generated by the disturbance during the deep-sea ore-collecting process to obtain ceramic raw materials; it includes a polymetallic nodule screening device, a pretreatment device, a calcium source extraction device, and a mud material obtaining device that are connected in sequence; The polymetallic nodule screening device includes a vibrating screen, a nodule discharge port, and a waste discharge port. The solid-liquid waste after separating the polymetallic nodules enters the pretreatment device through the waste discharge port; The pretreatment device includes a sedimentation centrifuge, a soil drying device, and a salt removal device that are connected in sequence; The input end of the sedimentation centrifuge is connected to the waste discharge port, and the output end is connected to the soil drying device; the output end of the soil drying device is connected to the salt removal device; The outlet of the salt removal device is connected to the calcium source extraction device. The calcium source extraction device is divided into upper and lower layers at intervals. The upper layer is filled with dilute hydrochloric acid solution, which is used to dissolve calcium substances and metal elements in the solution; The lower layer is a filter layer for solid-liquid separation. The separated sediment is discharged through the sediment outlet and is connected to the mud material obtaining device. The mud material obtaining device is used to remove free water from the sediment to obtain plastic ceramic mud; The bottom of the calcium source extraction device is connected to a beaker reactor. The beaker reactor is filled with sodium carbonate solution. The dissolved solution after solid-liquid separation enters the beaker reactor through the bottom outlet and reacts with the sodium carbonate solution to form a precipitate; at the same time, it also includes a funnel and a color sorter for separating the precipitate. A filter paper for filtering the precipitate is arranged in the funnel. The filtered precipitate is separated by the color sorter into white calcium carbonate precipitate and other colored metal precipitates. Calcium carbonate is an important material in the ceramic manufacturing process.

2. The ceramic raw material acquisition system applied to the deep-sea ore collection process according to claim 1, wherein: The soil drying device is a surrounding pipeline arranged on the conveyor belt, and a heating wire is wound around the pipeline to make the sediment after the solid-liquid waste settles in a dry state and promote the precipitation of salts.

3. The ceramic raw material acquisition system applied to the deep-sea ore-collecting process according to claim 1, wherein: The salt removal device is a washing box. A sediment inlet is arranged above one side of the washing box, and a washed sediment outlet is arranged on the other side. A conveyor belt is connected to the sediment outlet; an adjustable-tension screen is arranged in the washing box. The two ends of the screen are connected to control pulleys, and sliding rails adapted to the control pulleys are arranged on the inner wall of the box; a water pump, a water inlet, and a water outlet are arranged below the washing box; at the same time, a heating plate for heating the water in the washing box is installed at the bottom of the washing box.

4. A ceramic raw material acquisition system applied to the deep-sea ore collection process according to claim 1, characterized in that: The calcium source extraction device is a U-shaped container and is divided into upper and lower layers by an openable partition. The upper layer is filled with dilute hydrochloric acid solution, and a stirring rod is installed on the side wall. The lower layer is a filter layer, and a filter plate is installed in the filter layer. A solid mud material outlet is arranged on one side of the filter plate and is connected to the mud material obtaining device; a feeding plate with a sampling hole is installed at the top inlet of the U-shaped container.

5. The ceramic raw material acquisition system applied to the deep-sea ore collection process according to claim 1, wherein: The mud material obtaining device is a belt filter press.

6. A method for obtaining ceramic raw materials in the deep-sea ore-collecting process, characterized in that, It includes the following processes: The jet nozzles at the front of the mining vehicle spray water jets onto the seabed to disturb the seabed. Under the drive of the rising water flow field, polymetallic nodules, sediment, and seawater are collected and transported to the mother ship; Use a vibrating screen to screen out polymetallic nodules from the solid-liquid waste; The solid-liquid waste after separating polymetallic nodules is dehydrated by a sedimentation centrifuge to obtain dehydrated sediment. The dehydrated sediment is dried to make it in a dry state and to promote the precipitation of salts; the dried sediment is repeatedly washed to remove the salts. The sediment after removing salts is first dissolved in a dilute hydrochloric acid solution to dissolve calcium substances and metal elements in the solution. After the dissolution is completed, filtration is carried out. The sediment separated by filtration is subjected to a pressure filtration operation to remove free water to obtain a plasticizable ceramic clay. The filtered solution is discharged into a sodium carbonate solution, reacts with the sodium carbonate solution to form a precipitate. The formed precipitate is filtered with filter paper. The filtered precipitate is separated by a color sorter into white calcium carbonate precipitate and other colored metal precipitates. Calcium carbonate is an important material in the ceramic manufacturing process.

7. The method for obtaining ceramic raw materials applied to the deep-sea ore-collecting process according to claim 6, wherein, The device for repeatedly washing the dried sediment to remove salts is a washing box. An inlet for sediment is arranged above one side of the washing box, and an outlet for the washed sediment is arranged on the other side. A conveyor belt is connected to the sediment outlet; an adjustable-tension screen is arranged in the washing box. Both ends of the screen are connected to control pulleys, and slide rails adapted to the control pulleys are arranged on the inner wall of the box body; a water pump, a water inlet and a water outlet are arranged below the washing box; at the same time, a heating plate for heating the water in the washing box is installed at the bottom of the washing box; the salts in the sediment are repeatedly washed by the adjustable-tension and liftable screen, and the water is changed when the salts are saturated. During the washing process, the water is heated by the heating plate to accelerate dissolution.

8. A method for obtaining ceramic raw materials applied in the deep-sea ore-collecting process as described in claim 6, characterized in that, The sediment after removing salts slowly enters the dilute hydrochloric acid solution through a feed plate with a sample injection hole, sufficient chemical reaction time is provided, and the reaction rate is increased by stirring with a stirring rod until no bubbles are generated.

Images