1. The preparation method of the solar-thermal power generation energy storage ceramsite is characterized by comprising the following steps of:

s1: purchasing bauxite, hard clay and auxiliary materials, and preparing enough water;

s2: adding bauxite, hard clay and auxiliary material into different jaw crushers respectively, crushing the bauxite, the hard clay and the auxiliary material by the different jaw crushers respectively to prepare bauxite sand, hard clay sand and auxiliary material sand, adding the bauxite sand, the hard clay sand and the auxiliary material sand into different powder vibrating screens respectively, screening the bauxite sand, the hard clay sand and the auxiliary material sand by the different powder vibrating screens respectively to obtain qualified bauxite sand, hard clay sand and auxiliary material sand, conveying the qualified bauxite sand, hard clay sand and auxiliary material sand into different raw material bins respectively, adding the unqualified bauxite sand, hard clay sand and auxiliary material sand into corresponding jaw crushers again to crush, repeating the steps until the bauxite sand, the hard clay sand and the auxiliary material sand are all qualified and are conveyed into corresponding raw material bins;

s3: proportioning bauxite sand, hard clay sand and auxiliary material sand to obtain a mixed coarse material with a final proportion;

s4: inputting the mixed coarse material into a ball mill for grinding, and selecting qualified mixed fine powder through a powder selecting machine;

s5: inputting the mixed fine powder into a stirrer, adding a proper amount of water, and stirring until the mixture is uniformly stirred to obtain a mixed wet material;

s6: inputting the mixed wet material into a disc-type pelletizer, simultaneously spraying water into the disc-type pelletizer through a pipeline pump, and pelletizing the wet mixed material by the disc-type pelletizer to obtain semi-finished ceramsite;

s7: inputting the semi-finished ceramsite into a cylindrical sieve, sieving the semi-finished ceramsite by using the cylindrical sieve, inputting the qualified semi-finished ceramsite into a rotary kiln, crushing the unqualified semi-finished ceramsite by using a cage type crusher, returning to a granulation stage, and granulating again;

s8: calcining the semi-finished ceramsite in a rotary kiln to obtain finished ceramsite;

s9: cooling the calcined finished ceramsite by a rotary cooler;

s10: inputting the cooled finished ceramsite into a screening machine, screening, placing the qualified finished ceramsite into a packaging machine, and returning the unqualified finished ceramsite to the grinding stage of the ball mill;

s11: and weighing and packaging the qualified finished ceramsite by using a packaging machine according to the requirements of customers.

2. The preparation method of the energy storage ceramsite for photo-thermal power generation according to claim 1, is characterized by comprising the following steps: in step S1, the auxiliary materials are manganese oxide, iron oxide, cobalt oxide, and zirconium oxide, respectively.

3. The preparation method of the energy storage ceramsite for photo-thermal power generation according to claim 1, is characterized by comprising the following steps: in the step S2, the acceptable particle size of each raw material is less than 5 mm.

4. The preparation method of the energy storage ceramsite for photo-thermal power generation according to claim 1, is characterized by comprising the following steps: in step S3, the final mixture ratio result is, in terms of mass fraction, specifically bauxite: 50% -55%, hard clay: 40-45 percent of manganese oxide, 1 percent of ferric oxide, 0.3 percent of cobalt oxide and 0.7 percent of zirconium oxide.

5. The preparation method of the energy storage ceramsite for photo-thermal power generation according to claim 1, is characterized by comprising the following steps: in the step S4, the particle size of the qualified mixed fine powder is within the range of 600 to 800 meshes.

6. The preparation method of the energy storage ceramsite for photo-thermal power generation according to claim 1, is characterized by comprising the following steps: in the step S7, the grain size of the qualified semi-finished ceramsite is within the range of 30-50 meshes.

7. The preparation method of the energy storage ceramsite for photo-thermal power generation according to claim 1, is characterized by comprising the following steps: in the step S10, the grain size of the qualified finished ceramsite is within the range of 30-50 meshes.

Background

The solar photo-thermal power generation is mainly characterized by having an energy storage function and being capable of realizing all-weather power generation, which is an advantage that new energy power generation does not have in the past, so that high-temperature energy storage of solar thermal power generation is a key part in the whole photo-thermal power generation system, how to select an efficient, convenient and environment-friendly energy storage medium in an energy storage link is a research focus of solar photo-thermal power generation.

At present, fused salt is generally adopted as an energy storage medium at home and abroad, but the defect is obvious, and the development of solar photo-thermal power generation is severely restricted.

The disadvantages of using molten salts as energy storage media are mainly: 1. the proportion is complex, and the thermal stability and the chemical stability of the molten salt are difficult to ensure; 2. after the salts are heated unevenly, poor fluidity appears, and a flow pipeline is easy to block; 3. the corrosion resistance is high, the requirement on a sealing material is high, and the operation cost is increased; 4. once leakage occurs, the environment can be seriously damaged; 5. the molten salt starts to vaporize at more than 500 ℃, and therefore, the heat resistance range is narrow.

Disclosure of Invention

To solve the problems set forth in the background art described above. The invention provides a preparation method of photo-thermal power generation energy storage ceramsite, which has the characteristics of stable performance, higher heat storage efficiency, good heat exchange fluidity, safety, environmental protection and low operation cost.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of solar-thermal power generation energy storage ceramsite comprises the following steps:

s1: purchasing bauxite, hard clay and auxiliary materials, and preparing enough water;

s2: adding bauxite, hard clay and auxiliary material into different jaw crushers respectively, crushing the bauxite, the hard clay and the auxiliary material by the different jaw crushers respectively to prepare bauxite sand, hard clay sand and auxiliary material sand, adding the bauxite sand, the hard clay sand and the auxiliary material sand into different powder vibrating screens respectively, screening the bauxite sand, the hard clay sand and the auxiliary material sand by the different powder vibrating screens respectively to obtain qualified bauxite sand, hard clay sand and auxiliary material sand, conveying the qualified bauxite sand, hard clay sand and auxiliary material sand into different raw material bins respectively, adding the unqualified bauxite sand, hard clay sand and auxiliary material sand into corresponding jaw crushers again to crush, repeating the steps until the bauxite sand, the hard clay sand and the auxiliary material sand are all qualified and are conveyed into corresponding raw material bins;

s3: proportioning bauxite sand, hard clay sand and auxiliary material sand to obtain a mixed coarse material with a final proportion;

s4: inputting the mixed coarse material into a ball mill for grinding, and selecting qualified mixed fine powder through a powder selecting machine;

s5: inputting the mixed fine powder into a stirrer, adding a proper amount of water, and stirring until the mixture is uniformly stirred to obtain a mixed wet material;

s6: inputting the mixed wet material into a disc-type pelletizer, simultaneously spraying water into the disc-type pelletizer through a pipeline pump, and pelletizing the wet mixed material by the disc-type pelletizer to obtain semi-finished ceramsite;

s7: inputting the semi-finished ceramsite into a cylindrical sieve, sieving the semi-finished ceramsite by using the cylindrical sieve, inputting the qualified semi-finished ceramsite into a rotary kiln, crushing the unqualified semi-finished ceramsite by using a cage type crusher, returning to a granulation stage, and granulating again;

s8: calcining the semi-finished ceramsite in a rotary kiln to obtain finished ceramsite;

s9: cooling the calcined finished ceramsite by a rotary cooler;

s10: inputting the cooled finished ceramsite into a screening machine, screening, placing the qualified finished ceramsite into a packaging machine, and returning the unqualified finished ceramsite to the grinding stage of the ball mill;

s11: and weighing and packaging the qualified finished ceramsite by using a packaging machine according to the requirements of customers.

Further in the present invention, in step S1, the auxiliary materials are manganese oxide, iron oxide, cobalt oxide, and zirconium oxide, respectively.

Further, in the present invention, in the step S2, the acceptable particle diameters of the respective raw materials are less than 5 mm.

Further, in the present invention, in step S3, the final mixture ratio result is specifically bauxite: 50% -55%, hard clay: 40-45 percent of manganese oxide, 1 percent of ferric oxide, 0.3 percent of cobalt oxide and 0.7 percent of zirconium oxide.

Further, in the present invention, in the step S4, the grain size of the qualified mixed fine powder is within a range of 600 mesh to 800 mesh.

Further, in the step S7, the grain size of the qualified semi-finished ceramsite is within the range of 30-50 meshes.

Further, in the step S10, the qualified finished ceramsite has a particle size within a range of 30-50 meshes.

Compared with the prior art, the invention has the beneficial effects that:

1. the ceramsite prepared by adopting the bauxite, the hard clay and the auxiliary material as the raw materials has the characteristics of low purchase price of the production raw materials, low production cost and compact and solid surface, has uniform shape and components compared with the fused salt energy storage, and has the advantages of stable performance, higher heat storage efficiency, good heat exchange liquidity, safety, environmental protection, low operation cost and the like.

2. The energy storage ceramic particles prepared by the invention utilize the physical properties of special ceramics to store and exchange heat energy, after receiving solar radiation heat, the bearing temperature is increased from about 500 ℃ borne by molten salt to about 1000 ℃, and the energy storage medium in unit volume can store more heat energy for peak-shifting power generation; and simultaneously solves the problems of unstable performance of the molten salt, corrosion to equipment and the like.

Drawings

FIG. 1 is a flow chart of a preparation method of the photothermal power generation energy storage ceramsite.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides the following technical solutions: a preparation method of solar-thermal power generation energy storage ceramsite comprises the following steps:

s1: purchasing bauxite, hard clay and auxiliary materials, and preparing enough water;

s2: adding bauxite, hard clay and auxiliary material into different jaw crushers respectively, crushing the bauxite, the hard clay and the auxiliary material by the different jaw crushers respectively to prepare bauxite sand, hard clay sand and auxiliary material sand, adding the bauxite sand, the hard clay sand and the auxiliary material sand into different powder vibrating screens respectively, screening the bauxite sand, the hard clay sand and the auxiliary material sand by the different powder vibrating screens respectively to obtain qualified bauxite sand, hard clay sand and auxiliary material sand, conveying the qualified bauxite sand, hard clay sand and auxiliary material sand into different raw material bins respectively, adding the unqualified bauxite sand, hard clay sand and auxiliary material sand into corresponding jaw crushers again to crush, repeating the steps until the bauxite sand, the hard clay sand and the auxiliary material sand are all qualified and are conveyed into corresponding raw material bins;

s3: proportioning bauxite sand, hard clay sand and auxiliary material sand to obtain a mixed coarse material with a final proportion;

s4: inputting the mixed coarse material into a ball mill for grinding, and selecting qualified mixed fine powder through a powder selecting machine;

s5: inputting the mixed fine powder into a stirrer, adding a proper amount of water, and stirring until the mixture is uniformly stirred to obtain a mixed wet material;

s6: inputting the mixed wet material into a disc-type pelletizer, simultaneously spraying water into the disc-type pelletizer through a pipeline pump, and pelletizing the wet mixed material by the disc-type pelletizer to obtain semi-finished ceramsite;

s7: inputting the semi-finished ceramsite into a cylindrical sieve, sieving the semi-finished ceramsite by using the cylindrical sieve, inputting the qualified semi-finished ceramsite into a rotary kiln, crushing the unqualified semi-finished ceramsite by using a cage type crusher, returning to a granulation stage, and granulating again;

s8: calcining the semi-finished ceramsite in a rotary kiln to obtain finished ceramsite;

s9: cooling the calcined finished ceramsite by a rotary cooler;

s10: inputting the cooled finished ceramsite into a screening machine, screening, placing the qualified finished ceramsite into a packaging machine, and returning the unqualified finished ceramsite to the grinding stage of the ball mill;

s11: and weighing and packaging the qualified finished ceramsite by using a packaging machine according to the requirements of customers.

Specifically, in step S1, the auxiliary materials are manganese oxide, iron oxide, cobalt oxide, and zirconium oxide, respectively.

Specifically, in step S2, the acceptable particle size of each raw material is less than 5 mm.

Specifically, in step S3, the final mixture ratio result is, in terms of mass fraction, specifically bauxite: 55%, hard clay: 40 percent of manganese oxide, 1 percent of ferric oxide, 0.3 percent of cobalt oxide and 0.7 percent of zirconium oxide.

Specifically, in step S4, the particle size of the qualified mixed fine powder is within the range of 600 mesh to 800 mesh.

Specifically, in step S7, the grain size of the qualified semi-finished ceramsite is within the range of 30-50 meshes.

Specifically, in step S10, the qualified finished ceramsite has a particle size within the range of 30-50 meshes.

Example 2

The present embodiment is different from embodiment 1 in that:

specifically, in step S3, the final mixture ratio result is, in terms of mass fraction, specifically bauxite: 50%, hard clay: 45 percent of manganese oxide, 1 percent of ferric oxide, 0.3 percent of cobalt oxide and 0.7 percent of zirconium oxide.

Table 1 shows the measurement results of the parameters of the energy storage ceramsite for photo-thermal power generation in example 1-2:

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.