阅读说明：本技术 一种六方莫桑防结皮新材料及其制备方法和应用 (Novel anti-skinning material for mulberry leaves and preparation method and application thereof ) 是由 殷付忠 于 2021-03-17 设计创作，主要内容包括：本发明属于水泥生产技术领域,解决了现有技术中水泥生产过程中结皮现象严重的技术问题,提供了一种六方莫桑防结皮新材料及其制备方法和应用,所述六方莫桑防结皮新材料按质量百分比计包括：六方晶体粉15％～33％；莫桑粉4％～12％；锆粉20～50％；纳米粉4％～8％,将上述材料加水搅拌混合均匀后获得初混物,将初混物采用成型工艺制成坯体,采用一次烧成工艺,在1600℃的温度下高温反应,形成六方莫桑防结皮新材料。本发明所述的一种六方莫桑防结皮新材料具有有效防止水泥生产过程中产生结皮的优点。(The invention belongs to the technical field of cement production, solves the technical problem of serious skinning phenomenon in the cement production process in the prior art, and provides a novel hexagonal Morus bombycis skinning-preventing material, a preparation method and application thereof, wherein the novel hexagonal Morus bombycis skinning-preventing material comprises the following components in percentage by mass: 15% -33% of hexagonal crystal powder; 4 to 12 percent of mulberry powder; 20-50% of zirconium powder; 4% -8% of nano powder, adding water into the above materials, stirring and mixing uniformly to obtain a primary mixture, preparing the primary mixture into a blank by adopting a forming process, and performing high-temperature reaction at 1600 ℃ by adopting a one-step firing process to form the novel hexagonal Morus alba anti-skinning material. The novel hexagonal mulberry anti-skinning material has the advantage of effectively preventing skinning in the cement production process.)

1. The novel hexagonal morus igniarius anti-skinning material is characterized by comprising the following components in percentage by mass: 15% -33% of hexagonal crystal powder; 4 to 12 percent of mulberry powder; 20-50% of zirconium powder; 4 to 8 percent of nano powder.

2. The new hexagonal morus anti-skinning material of claim 1, wherein the new hexagonal morus anti-skinning material is a multi-component composite special ceramic, namely a carbon-nitrogen-silicon (CNSi) -based composite phase wear resistant anti-corrosion anti-skinning material.

3. The preparation method of the novel hexagonal morus igniarius anti-skinning material as claimed in claim 2, characterized in that the material is added with water and stirred uniformly to obtain a primary mixture, the primary mixture is made into a green body by a forming process, and the green body is subjected to a high-temperature reaction at 1600 ℃ by a one-time firing process to form the novel hexagonal morus igniarius anti-skinning material.

4. The preparation method of a new hexagonal morus igniarius anti-skinning material according to claim 3, wherein the mass percent of added water is 17-27%.

5. The method for preparing a novel hexagonal morus anti-skinning material according to claim 4, wherein the stirring and mixing time is 15-30 min.

6. The method for preparing a novel hexagonal morus igniarius antiskinning material according to claim 5, wherein the forming process is one of slip casting and press forming.

7. The method for preparing a novel hexagonal morus igniarius antiskinning material according to claim 6, wherein the green body is in one of a tubular shape and a plate shape.

8. Use of the novel hexagonal morus anti-skinning material of claim 7 in cement production.

9. The application of the new hexagonal morus anti-skinning material in the cement production process according to claim 8 is characterized in that in application, an iron outer cylinder with the diameter D1150mm is manufactured, a hexagonal morus pipe with the inner diameter of phi 900mm is installed inside the iron outer cylinder, a heat-resistant steel cramp is welded on the inner wall of the outer cylinder, then a nano heat-insulating layer is used between anchoring pieces on the inner wall to fill a castable, an ash cleaning hole (an observation hole) is reserved in a proper position, each section of the hexagonal morus pipe above and below the casting layer is required to be clamped into a clamping groove at the end of the section of the hexagonal morus pipe, and no climbing phenomenon exists at a.

10. The application of the novel hexagonal Morus igniarius antiskinning material in the cement production process according to claim 8, wherein in the application, the prepared hexagonal Morus igniarius plate is 100mm 200mm, 200mm and 300mm 400mm in grid, the ceramic plates are provided with 4 bolt holes at four corners, after the multi-element composite special ceramic plate is fixed by bolts with phi 12 mm 220mm, the heat insulation material is pre-installed, then the heads of the bolts and the smoke chamber shell are welded firmly, each row of hexagonal Morus igniarius plate fixing bolts are connected to form a net structure, and gaps between the multi-element composite special ceramic plate and the shell are filled with a casting material.

Technical Field

The invention relates to the technical field of cement production, in particular to a novel hexagonal mulberry anti-skinning material, and a preparation method and application thereof.

Background

Because of the special process property of the novel dry clinker production line, the necking of the decomposing furnace, the smoke chamber, the discharging pipeline of the preheater and the like are more in crusting, the ventilation of the system is reduced, the thermal stability of a kiln system is seriously influenced, and certain influence is caused on the production quality.

Because the smoke chamber is high in temperature, workers can only clean the internal crust through experience, and when the air consumption of the system is not matched with the coal burning quantity or the coal burning performance is greatly changed, the refractory crust is easily formed in the smoke chamber, so that the labor intensity of field workers is increased, and if the treatment is improper, the serious consequence of production line halt can be caused. The blanking pipe of the preheater is blocked by crusts, and the kiln must be stopped for cleaning, thus seriously influencing the normal operation of the rotary kiln.

The formation of crust can be caused by many reasons, such as raw combustible material quality, hazardous waste and harmful components, system air, system coal, temperature control and process operation. It is known that only a small amount of harmful components volatilized during the clinker firing process are discharged into the atmosphere, and the rest of the harmful components are condensed on raw materials with lower temperature when moving to a low-temperature area of the kiln along with flue gas in the kiln. When the temperature rises, the volatile matter volatilizes, so that the cyclic enrichment is generated. When the circulation is enriched to a certain degree, the raw material powder wrapped by low-melting-point compounds such as alkali chloride (RCl) and alkali sulfate (R2SO4) is adhered to the inner wall of the smoke chamber and the cone part of the lowest two-stage preheater or the blanking pipe to form crusts, the ventilation area in the kiln is reduced seriously, the ventilation quantity is insufficient, the normal combustion of the coal powder is not facilitated, and therefore the production is greatly influenced.

At present, the reason for the formation of the crust is mainly R2O and SO₃Cl and other harmful components of the hazardous waste exchange heat with the raw material in a gaseous state together with the kiln tail waste gas at a high temperature, and volatile matters are condensed on the surface of the raw material and attached to the inner wall of the smoke chamber, the necking of the decomposing furnace and the blanking pipe to form crusts. Therefore, the higher the temperature of the smoke chamber is, the higher the contents of sulfur, alkali, chlorine and harmful components in the raw combustion material are, the more serious the skinning is, the lower the ventilation in the kiln is caused by the skinning, the later combustion of the coal powder aggravates the formation of the skinning, and a vicious circle is formed.

Disclosure of Invention

The embodiment of the invention provides a novel hexagonal mulberry anti-skinning material, which is used for solving the technical problem of serious skinning phenomenon in the cement production process.

The embodiment of the invention provides a new hexagonal morus igniarius anti-skinning material, which comprises the following components in percentage by mass: 15% -33% of hexagonal crystal powder; 4 to 12 percent of mulberry powder; 20-50% of zirconium powder; 4 to 8 percent of nano powder.

Furthermore, the novel hexagonal Morus bombycis anti-skinning material is a multi-element composite special ceramic, namely a carbon-nitrogen-silicon (CNSi) based composite phase wear-resistant anti-corrosion anti-skinning material.

A preparation method of a novel hexagonal mulberry anti-skinning material comprises the steps of adding water into the materials, stirring and mixing the materials uniformly to obtain a primary mixture, preparing the primary mixture into a blank by adopting a forming process, and performing high-temperature reaction at 1600 ℃ by adopting a one-time sintering process to form the novel hexagonal mulberry anti-skinning material.

Further, the mass percent of the added water is 17-27%.

Further, the stirring and mixing time is 15-30 min.

Further, the forming process is one of slip casting and compression molding.

Further, the shape of the blank is one of a tubular shape and a plate shape.

An application of a new hexagonal mulberry anti-skinning material in the production process of cement.

Furthermore, when in application, the hexagonal Morus alba pipe is used, and simultaneously, a novel nano thermal insulation material is adopted as a thermal insulation layer, the problem that the thermal insulation performance of the hexagonal Morus alba pipe and a refractory castable is not enough is solved, the thermal insulation layer adopts a nano technology, and a nano microporous thermal insulation material is produced by adopting a special process, compared with a traditional micron-sized pore thermal insulation material such as ceramic fiber and a microporous calcium silicate board, the pore of the nano thermal insulation material is about 20 nanometers, so that the thermal conductivity coefficient of the nano thermal insulation material is the lowest thermal insulation material so far, the thermal insulation performance at the same temperature is 4 times better than that of the traditional thermal insulation material, an iron outer barrel with the diameter of D1150mm is manufactured, a hexagonal Morus alba pipe with the inner diameter of phi 900mm is installed inside, a heat-resistant steel cramp is welded on the inner wall of the outer barrel, then the nano, in construction, each section of hexagonal Morus alba pipe above and below is required to be clamped into the end clamping groove of the hexagonal Morus alba pipe, and no platform climbing phenomenon exists at the joint; ensuring the tight inlaying of the nanometer thermal insulation board and the uniform thickness of the casting material.

Furthermore, when the hexagonal Morus alba plate is applied, the manufactured hexagonal Morus alba plate is 100mm 200mm, 200mm and 300mm 400mm in size, 4 bolt holes are formed in four corners of the ceramic plate, after the multi-element composite special ceramic plate is fixed through bolts of phi 12 mm 220mm, the heat insulation material is pre-installed, then the head of each bolt is firmly welded with the smoke chamber shell, the inner anchoring piece can be changed into a stainless steel bar through a palladium nail, and each row of hexagonal Morus alba plate fixing bolts are connected to form a net-shaped structure, so that the function of fixing the castable is achieved, the purposes of reducing installation difficulty and saving cost are achieved, gaps between the multi-element composite special ceramic plate and the shell are filled with the castable, and even if the plate falls off, the normal operation of a system is not affected.

In conclusion, the beneficial effects of the invention are as follows:

1. the weight is light: the density of the novel hexagonal Morus bombycis anti-skinning material is only 3.0g/cm3, which is equivalent to that of a refractory material;

2. high temperature resistance: the long-time high-temperature resistance temperature of the novel hexagonal Morus bombycis anti-skinning material is 1200 ℃, the short-time high-temperature resistance can reach 1300 ℃, and the performance is reduced along with the rise of the temperature;

3. the thermal stability is good: the new hexagonal Morus bombycis anti-skinning material is not damaged by water cooling at 750 ℃ (times) for more than 10 times, and the interaction is not damaged when the actual application temperature is 1200 ℃ to 100 ℃;

4. high wear resistance: the novel hexagonal Morus bombycis anti-skinning material has excellent wear resistance, and the abrasion loss is 0.03g/cm2, so that the wear resistance of the novel multi-element composite material is 3 times that of cast stone (0.09g/cm 2);

5. acid and alkali resistance: the novel hexagonal Morus bombycis anti-skinning material is acid-resistant and alkali-resistant, and can be used in an acid-base alternating environment particularly at high temperature;

6. moisture resistance-the water absorption of the novel hexagonal Morus bombycis anti-skinning material can be compared favorably with glass, so that the material cannot be influenced by weather change and moisture and cannot rot or generate mould;

7. the novel anti-ultraviolet-hexagonal Morus bombycis anti-skinning material is not influenced by weather change, and the core and the appearance of the novel hexagonal Morus bombycis anti-skinning material cannot be changed no matter whether the sun and rain are exposed or the temperature is changed rapidly;

8. the fire resistance-surface of the new hexagonal Morus bombycis anti-skinning material has strong protection capability to burning flame. The material is flame-retardant, the panel can not melt, and the characteristics can be maintained for a long time;

9. the novel anti-static-hexagonal Morus bombycis anti-skinning material is an anti-static material, which is very suitable for dust-free areas, optical industry and computer industry;

the hexagonal Morus alba board (new multicomponent composite material) has excellent performances of high temperature resistance, corrosion resistance, good thermal stability and the like, is very suitable for being applied to parts which are easy to crust, wear-resistant and need high temperature in the cement industry, and is particularly suitable for parts which have high temperature, acid-base change and frequent high and low temperature change in a smoke chamber.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without any creative effort, other drawings may be obtained according to the drawings, and these drawings are all within the protection scope of the present invention.

FIG. 1 is a table of the physical and chemical properties of the novel hexagonal Morus bombycis anti-skinning material of the present invention;

FIG. 2 is a table of physical and chemical properties of hexagonal morus plates according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the various features of the present invention and embodiments may be combined with each other and are within the scope of the present invention.

Example 1:

a novel anti-skinning material for Morus bombycis comprises the following components in percentage by mass: 15% of hexagonal crystal powder; 12% of Morus alba powder; 50% of zirconium powder; 8 percent of nano powder.

The novel hexagonal Morus bombycis anti-skinning material is a multi-element composite special ceramic, namely a carbon-nitrogen-silicon (CNSi) based composite phase wear-resistant anti-corrosion anti-skinning material.

A preparation method of a novel material for preventing skin formation in the form of hexagonal Morus bombycis comprises the steps of adding water into the material, stirring and mixing uniformly to obtain a primary mixture, wherein the mass percent of the added water is 17% -27%; stirring and mixing for 15-30 min. In this embodiment, the mass percent of the added water is 20%, and the time for stirring and mixing is selected to be 30 min.

And (3) preparing the primary mixture into a green body by adopting a forming process, and performing high-temperature reaction at 1600 ℃ by adopting a one-step firing process to form a new hexagonal Morus alba anti-skinning material.

The forming process is slip casting, and the blank is tubular.

Example 2:

a novel anti-skinning material for Morus bombycis comprises the following components in percentage by mass: 15% of hexagonal crystal powder; 4% of mulberry powder; 50% of zirconium powder; 8 percent of nano powder.

The preparation method is implemented by referring to example 1, and the details are not repeated.

The forming process is pouring forming, and the blank body is tubular.

Example 3:

a novel anti-skinning material for Morus bombycis comprises the following components in percentage by mass: hexagonal crystal powder 33%; 12% of Morus alba powder; 50% of zirconium powder; 8 percent of nano powder.

The preparation method is implemented by referring to example 1, and the details are not repeated.

The forming process is compression forming, and the blank is plate-shaped.

Example 4:

a novel anti-skinning material for Morus bombycis comprises the following components in percentage by mass: hexagonal crystal powder 33%; 5% of mulberry powder; 50% of zirconium powder; 8 percent of nano powder.

The preparation method is implemented by referring to example 1, and the details are not repeated.

The forming process is compression forming, and the blank is plate-shaped.

Both the hexagonal morus pipe and the hexagonal morus plate prepared in the above examples can be applied in the field of cement production processes.

As shown in figure 1, when in application, a hexagonal Morus pipe is used, and simultaneously, a novel nano thermal insulation material is adopted as a thermal insulation layer, the problem that the thermal insulation performance of the hexagonal Morus pipe and a refractory castable is insufficient is solved, the thermal insulation layer adopts a nano technology, and a nano microporous thermal insulation material produced by adopting a special process is adopted, compared with a traditional micron-sized pore thermal insulation material such as ceramic fiber and a microporous calcium silicate plate, the pore of the nano thermal insulation material is about 20 nanometers, so that the thermal conductivity coefficient of the nano thermal insulation material is the lowest thermal insulation material so far, the thermal insulation performance at the same temperature is 4 times better than that of the traditional thermal insulation material, an outer barrel with the diameter of D1150mm iron is manufactured, a hexagonal Morus pipe with the inner diameter of phi 900mm is installed inside, a heat-resistant steel cramp is welded on the inner wall of the outer barrel, then the nano thermal, in construction, each section of hexagonal Morus alba pipe above and below is required to be clamped into the end clamping groove of the hexagonal Morus alba pipe, and no platform climbing phenomenon exists at the joint; ensuring the tight inlaying of the nanometer thermal insulation board and the uniform thickness of the casting material.

As shown in fig. 1 and 2, in application, the manufactured hexagonal mullite boards have the specifications of 100mm × 200mm, 200mm × 200mm and 300mm × 400mm, four corners of the ceramic boards are provided with 4 bolt holes, after the multi-element composite ceramic board is fixed by using bolts of 12 × 220mm, the heat insulation material is pre-installed, then the head of each bolt is firmly welded with the smoke chamber shell, the internal anchoring piece can be changed into a stainless steel bar from a palladium nail, and each row of hexagonal mullite board fixing bolts are connected to form a net structure, so that the function of fixing the castable is achieved, the purposes of reducing installation difficulty and saving cost are achieved, gaps between the multi-element composite special ceramic board and the shell are filled with the castable, and even if the boards fall off, the normal operation of the system is not influenced. The bolt model is 10 x 220mm, and the heat-resistant steel bolt with 20% of nickel content.

During the operation of the system, the pressure of the smoke chamber is relatively stable through system data observation, and the phenomenon of over-pressure increase does not occur. From the actual situation on site, the growth speed of the crust in the smoke chamber is very low, the production influence is little, the frequency of cleaning the smoke chamber is reduced from two times per shift to one time per shift, and the trachea is basically cleaned by checking the property. Not only the stability of the system is increased, but also the labor intensity and the safety risk of workers are greatly reduced.

The installation positions of the hexagonal Morus alba plates and the hexagonal Morus alba pipes are suggested:

1. the smoke chamber is full, and the smoke chamber is provided with a blanking slope.

2. The joint of the smoke chamber and the decomposing furnace is reduced.

3. A five-stage cylinder blanking pipe.

4. The outlet of the primary cylinder is provided with a bending pipeline.

5. A kiln door cover top cover.

6. A grate cooler low wall and a grate cooler shell.

7. The inner wall of each wear-resistant blanking pipe.

8. Parts resistant to acid, alkali, scouring and skinning are required.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.