CN112980530A - High-temperature-resistant high-strength adhesive and preparation method thereof - Google Patents
High-temperature-resistant high-strength adhesive and preparation method thereof Download PDFInfo
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- CN112980530A CN112980530A CN202110183212.8A CN202110183212A CN112980530A CN 112980530 A CN112980530 A CN 112980530A CN 202110183212 A CN202110183212 A CN 202110183212A CN 112980530 A CN112980530 A CN 112980530A
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/105—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with a mixture of organic and inorganic binders
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Abstract
The high temperature resistant high strength adhesive is prepared with starch 1-60 weight portions, humate 10-80 weight portions, boride 0.1-50 weight portions and metal oxide 0.1-40 weight portions, and the metal oxide has relative molecular weight over 30. According to the technical scheme, the boride is added into the starch and the humate, so that the adhesive has good cold strength when being applied to coal and coke, and the metal oxide is added into the adhesive, so that the cold strength and the hot strength of the adhesive in application are improved, the product has high strength in the carrying and using processes, the condition of slag falling in the using process is reduced, the long-term stability of the coal and coke products is improved, the processed coal and coke products have high cold strength and hot strength by compounding less components in the adhesive, the cost of forming and processing of the coal and coke products is reduced, only physical mixing is needed during use, construction is convenient, and the working strength of processing operation workers is reduced.
Description
Technical Field
The invention belongs to the technical field of adhesives, and particularly relates to a high-temperature-resistant high-strength adhesive and a preparation method thereof.
Background
Coal is a layer of extremely thick black humus which is formed by piling branches, leaves and roots of plants for millions of years on the ground, is continuously buried underground due to the change of the crust, is isolated from the air for a long time, and forms black combustible sedimentary rock through a series of complex physical and chemical changes and other factors under high temperature and high pressure, which is the forming process of the coal, and the coal is one of indispensable main energy sources of human beings. Coke is one type of solid fuel. Obtained by dry distillation of coal at high temperature of about 1000 ℃. The main component is fixed carbon, and the secondary component is ash, and the volatile matter and the sulfur content are both very little. Is silver gray and has metallic luster. Hard and porous. There are three major types of metallurgical coke, foundry coke and chemical coke, depending on their uses. It is mainly used for smelting steel or other metals, and also can be used as raw material for making water gas, gasification and chemical industry, etc. Coal and coke are generally processed into various forms for convenient transportation, storage and use, wherein the briquette and formed coke are the main ways for forming coal and coke.
The existing briquette or formed coke is formed by mixing and pressing pulverized coal or coke powder, a binder and water. Patent application No. CN201610632324.6 discloses a briquette binder, the main raw materials of which comprise formaldehyde, oxalic acid, propylene oxide, calcium oxide, sodium hydroxide, sodium carboxymethylcellulose, sodium silicate, zeolite powder, industrial salt, dextrin, starch and water, and the briquette binder uses more organic compounds, although the briquette binder has less residual ash after combustion and has a certain calorific value, the briquette processed by the briquette binder has poor high temperature resistance and low thermal strength at high temperature. There is a need for an adhesive with high temperature resistance and good cold and hot strength.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-temperature-resistant high-strength adhesive which is prepared from the following raw materials, by weight, 1-60 parts of starch, 10-80 parts of humate, 0.1-50 parts of boride and 0.1-40 parts of metal oxide, wherein the relative molecular weight of the metal oxide is more than 30.
Preferably, the humate is at least one selected from the group consisting of potassium humate, sodium humate, calcium humate, magnesium humate, manganese humate, zinc humate and potassium fulvate.
Preferably, the boride is borax and/or boric acid.
Preferably, the metal oxide is an iron-based oxide and/or a manganese-based oxide.
Preferably, the metal oxide is a mixture of an iron-based oxide and a manganese-based oxide, and the mass ratio of the iron-based oxide to the manganese-based oxide is 1: (1-5).
Preferably, the iron oxide is at least one selected from the group consisting of ferrous oxide, ferric dioxide, ferric trioxide and ferroferric oxide.
Preferably, the manganese-based oxide is at least one selected from the group consisting of manganese monoxide, manganese dioxide, manganese trioxide and manganomanganic oxide.
Preferably, the preparation raw material further comprises at least one of bentonite, phosphate, gypsum powder, sodium silicate, polyacrylamide high molecular polymer, silicon compounds, cellulose and derivatives thereof, vegetable gum and derivatives thereof, and animal gum and derivatives thereof.
A preparation method of a high-temperature-resistant high-strength adhesive at least comprises the following steps: the preparation raw materials are physically mixed to obtain the product.
A high-temp. resistant high-strength adhesive for shaping coal, shaped coke, metallurgical coke, casting coke and baking carbon.
Has the advantages that: according to the technical scheme, the boride is added into the starch and the humate, the boride, the starch and the humic acid generate a cross-linking reaction, the adhesive has good cold strength when being applied to coal and coke, and the metal oxide is added into the adhesive, so that the cold strength and the hot strength of the adhesive in application are improved, the product has high hot strength in the carrying and using processes, the good form is still kept at high temperature, the burning resistance time is long, the slag falling condition in the using process is reduced, and the long-term heat stability of the coal and coke products is improved. When the adhesive in the technical scheme is applied to molded coal, formed coke, metallurgical coke, foundry coke and barbecue carbon, the strength of the product after thermal reaction is higher, the weight ratio is 25-50%, the utilization value of the product is higher, and the product can keep a stable form for a long time. The adhesive in the technical scheme has higher use and uses less components to carry out compounding so as to ensure that the processed coal and coke products have higher cold and hot strength, reduce the cost of the forming and processing of the coal and coke products, and only need physical mixing cold press forming or hot press forming under high-temperature steam when in use, thereby having convenient construction and reducing the working strength of processing operators.
Detailed Description
For purposes of the following detailed description, it is to be understood that the invention may assume various alternative variations and step sequences, except where expressly specified to the contrary. Moreover, other than in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.
In order to solve the technical problems, the invention provides a high-temperature-resistant high-strength adhesive which is prepared from the following raw materials, by weight, 1-60 parts of starch, 10-80 parts of humate, 0.1-50 parts of boride and 0.1-40 parts of metal oxide, wherein the relative molecular weight of the metal oxide is more than 30.
As a preferred technical scheme, the starch is pre-gelatinized corn starch.
The pregelatinized starch is modified starch with simple processing and wide application, can be used only by being mixed into paste by cold water during application, avoids the trouble of heating for gelatinization, has higher dissolving speed, and the caking property is relatively good, the inventor uses the pregelatinized corn starch as the adhesive to be applied to the forming processing of coal and coke breeze, it is found that the use of the pregelatinized corn starch can increase the cold strength of the molded coal and the formed coke, can be bonded and formed at low temperature, and the pregelatinized starch is decomposed particularly slowly at high temperature, but the inventor finds that the high-temperature bonding strength of the molded coal and the formed coke is poor, the slag falling phenomenon is easy to occur, the pre-gelatinized corn starch is used as a binder to cause the briquette and the formed coke to be more severely crushed at high temperature, and the heat strength is poorer and poorer along with the increase of the temperature. The inventors believe that a possible reason is that the pregelatinized corn starch can bind at low and normal temperatures, the cold strength of the briquettes and coke is low due to the limited force of the pregelatinized starch with the coal and coke breeze, but the pregelatinized corn starch is burned off with increasing temperature and loses its binding effect.
As a preferable technical scheme, the humate is at least one selected from potassium humate, sodium humate, calcium humate, magnesium humate, manganese humate, zinc humate and potassium fulvate.
As a preferred technical scheme, the humate is sodium humate.
The sodium humate is a multifunctional macromolecular organic weak acid sodium salt prepared by processing weathered coal, peat and lignite as raw materials through a special process, wherein the sodium humate molecule contains benzene rings, condensed rings and certain heterocycles such as pyrrole, furan, indole and the like, all aromatic rings are connected through a bridge bond, and the aromatic rings have various functional groups, mainly carboxyl, phenolic groups, hydroxyl groups, methoxyl groups, quinonyl groups and the like. The inventor finds that the addition of a certain amount of sodium humate into the pregelatinized corn starch can effectively improve the bonding strength of the molded coal and the formed coke at normal temperature and low temperature, and the molded coal and the formed coke are not broken in the transportation process. Although the addition of sodium humate makes the adhesive have certain heat strength at a slightly higher temperature, the heat strength of the briquette and formed coke is still poor along with the increase of the temperature. The inventors considered that the possible reason is that various functional groups in sodium humate can increase van der waals force between coal, coke breeze and adhesive, thereby increasing bonding strength cold strength at normal temperature and low temperature, and as the initial temperature is increased, thermal movement between molecules is enhanced, so that diffusion between sodium humate and coal and coke breeze is enhanced, thereby increasing bonding strength to some extent.
As a preferred technical scheme, the boride is borax and/or boric acid.
The inventor finds that the borax or boric acid is added into the pregelatinized corn starch and the sodium humate, so that the heat strength of the briquette and the formed coke can be improved to a certain extent, and particularly, the briquette and the formed coke can still keep good shapes at a higher temperature in a steam processing stirring ball pressing process. The inventor thinks that the possible reasons are that borax or boric acid can be combined with adjacent cis-hydroxyl in pregelatinized starch and sodium humate to generate crosslinking reaction, so that linear pregelatinized starch and sodium humate form a reticular crosslinking compound, the three substances have better cooperativity at high temperature, the crosslinking strength between the linear pregelatinized starch and the sodium humate and the coal and the coke can be better improved, the boric acid or borax has better heat resistance, and the heat strength of the briquette and the formed coke can be better improved. And after being placed for a long time, borax or boric acid has a tendency of migrating out, and the overall cold and hot strength and stability are reduced.
In a preferred embodiment, the metal oxide is an iron-based oxide and/or a manganese-based oxide.
As a preferable technical scheme, the metal oxide is a mixture of an iron-based oxide and a manganese-based oxide, and the mass ratio of the iron-based oxide to the manganese-based oxide is 1: (1-5).
In a preferred embodiment, the iron oxide is at least one selected from the group consisting of ferrous oxide, ferric dioxide, ferric trioxide, and ferroferric oxide.
As a preferable technical scheme, the iron oxide is ferroferric oxide.
In a preferred embodiment, the manganese-based oxide is at least one selected from the group consisting of manganese monoxide, manganese dioxide, manganese trioxide and manganomanganic oxide.
In a preferred embodiment, the manganese oxide is manganese monoxide.
As a preferable technical scheme, the metal oxide is a mixture of ferroferric oxide and manganese monoxide, and the mass ratio of the ferroferric oxide to the manganese monoxide is (1): (1-5).
The inventor unexpectedly finds that the addition of manganese oxide and ferroferric oxide in a proper proportion into the adhesive can improve the mobility of borax or boric acid, improve the long-term thermal stability of the molded coal and formed coke, prolong the burning resistant time in a high-temperature state, enable the molded coal and the formed coke to release more burning heat, improve the utilization value of products, and greatly improve the high-temperature resistance and the cold and hot strength of the adhesive. The inventor believes that the possible reasons are that the manganese monoxide has larger specific surface area and stronger adsorbability, the ferroferric oxide has stronger magnetism and can prevent the migration of borax or boric acid, so that the adhesive still keeps long-term thermal stability under the condition of high temperature in the briquette and formed coke, and the adsorbability can reduce the slag falling phenomenon of the briquette and the formed coke in the using process, improve the heat release of the briquette and the formed coke and improve the use value of the briquette and the formed coke. The cold and hot strength of the adhesive is reduced when the addition amounts of the manganese oxide and the ferroferric oxide are too much or too little.
As a preferable technical scheme, the preparation raw material further comprises at least one of bentonite, phosphate, gypsum powder, sodium silicate, polyacrylamide-based high molecular polymer, silicon-based compound, cellulose and its derivatives, vegetable gum and its derivatives, and animal gum and its derivatives.
A preparation method of a high-temperature-resistant high-strength adhesive at least comprises the following steps: the preparation raw materials are physically mixed to obtain the product.
A high-temp. resistant high-strength adhesive for shaping coal, shaped coke, metallurgical coke, casting coke and baking carbon.
As a preferable technical scheme, the addition amount of the high-temperature-resistant high-strength adhesive in the molding processing of briquette, formed coke, metallurgical coke, casting coke and barbecue carbon is 5-10 wt%.
As a preferable technical scheme, the high-temperature-resistant high-strength adhesive is cold-pressed or hot-pressed under high-temperature steam when being applied to the molding processing of briquette, formed coke, metallurgical coke, cast coke and barbecue carbon.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Example 1
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1 part of manganese oxide powder, 36 parts of sodium humate and 4 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 2
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 0.5 part of manganese oxide powder, 36 parts of sodium humate, and 4 parts of borax, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 3
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1.5 parts of manganese oxide powder, 1 part of ferroferric oxide, 36 parts of sodium humate, and 4 parts of borax, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, ferroferric oxide, sodium humate and borax, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 4
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1.5 parts of manganese oxide powder, 36 parts of sodium humate, and 4 parts of borax, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 5
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1.5 parts of manganese oxide powder, 0.1 part of ferroferric oxide, 36 parts of sodium humate, and 4 parts of borax, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, ferroferric oxide, sodium humate and borax, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 6
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1.5 parts of manganese oxide powder, 2 parts of ferroferric oxide, 36 parts of sodium humate, and 4 parts of borax, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, ferroferric oxide, sodium humate and borax, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 7
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 2 parts of manganese oxide powder, 36 parts of sodium humate and 4 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 8
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 2 parts of manganese oxide powder, 36 parts of sodium humate, 4 parts of borax, and 3 parts of bentonite, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate, borax and bentonite, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 9
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 2 parts of manganese oxide powder, 36 parts of sodium humate and 4 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 10
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1 part of manganese oxide powder, 38 parts of sodium humate and 3 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 11
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1 part of manganese oxide powder, 39 parts of sodium humate and 3 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 12
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1 part of manganese oxide powder, 40 parts of sodium humate and 1 part of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 13
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 0.5 part of manganese oxide powder, 39 parts of sodium humate, and 3 parts of borax, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 14
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 0.5 part of manganese oxide powder, 39 parts of sodium humate, and 4 parts of borax, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 15
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1 part of manganese oxide powder, 38 parts of sodium humate and 3 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 16
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 2 parts of manganese oxide powder, 36 parts of sodium humate and 4 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 17
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 0.5 part of manganese oxide powder, 29 parts of sodium humate and 3 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 18
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 0.5 part of manganese oxide powder, 29 parts of sodium humate and 4 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 19
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1 part of manganese oxide powder, 28 parts of sodium humate and 3 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 20
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 2 parts of manganese oxide powder, 26 parts of sodium humate and 4 parts of borax, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate and borax, and stirring to obtain the final product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 21
In order to solve the technical problem, a first aspect of this embodiment provides a high temperature resistant and high strength adhesive, which is prepared from 18 parts of starch, 0.5 part of manganese oxide powder, 29 parts of sodium humate, 3 parts of borax, and 2 parts of bentonite, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate, borax and bentonite, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 22
In order to solve the technical problem, a first aspect of this embodiment provides a high temperature resistant and high strength adhesive, which is prepared from 18 parts of starch, 0.5 part of manganese oxide powder, 29 parts of sodium humate, 4 parts of borax and 2 parts of bentonite, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate, borax and bentonite, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 23
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 1 part of manganese oxide powder, 28 parts of sodium humate, 3 parts of borax, and 2 parts of bentonite, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate, borax and bentonite, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 24
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 2 parts of manganese oxide powder, 26 parts of sodium humate, 4 parts of borax, and 2 parts of bentonite, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, sodium humate, borax and bentonite, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 25
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 52 parts of manganese oxide powder, 3 parts of borax, 3 parts of cellulose, and 14 parts of ferroferric oxide, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, borax, cellulose and ferroferric oxide, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 26
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 25 parts of starch, 57 parts of manganese oxide powder, 4 parts of borax, 4 parts of cellulose, and 14 parts of ferroferric oxide, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, borax, cellulose and ferroferric oxide, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 27
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 28 parts of starch, 62 parts of manganese oxide powder, 5 parts of borax, 5 parts of cellulose and 15 parts of ferroferric oxide, wherein the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, borax, cellulose and ferroferric oxide, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Example 28
In order to solve the technical problem, a first aspect of this embodiment provides a high-temperature-resistant high-strength adhesive, which is prepared from 18 parts of starch, 4 parts of manganese oxide powder, 6 parts of borax, 6 parts of cellulose, and 5 parts of ferroferric oxide, where the starch is pregelatinized corn starch. The second aspect of this embodiment provides a method for preparing a high temperature resistant high strength adhesive: mixing starch, manganese oxide powder, borax, cellulose and ferroferric oxide, and stirring to obtain the product. The high-temperature-resistant high-strength adhesive prepared by the embodiment is applied to the molding processing of molded coal, formed coke, metallurgical coke, casting coke and barbecue carbon.
Performance testing
Performance test one
The binder prepared in example 1 to example 23 was mixed with water and white coal in a mass ratio of 6:12:82, and the mixture was stirred for 30min, the water was added as steam, the molded coal was hot-pressed, and then dried at 110 ℃ for 4h, and after drying, the molded coal was fired in a muffle furnace at 1050 ℃ for 30min, and then the molded coal was taken out to test the thermal strength.
Performance test 2
The binder prepared in example 1 to example 23 was mixed with water and white coal at a mass ratio of 6:12:82, the water was added in the form of steam, and the mixture was pressed into molded coal, and then dried at 110 ℃ for 4 hours, and then fired in a muffle furnace at 1050 ℃ for 60 minutes, and then the molded coal was taken out to test the thermal strength.
Performance test three
The binder prepared in example 1 to example 23 was mixed with water and white coal in a mass ratio of 6:12:82, and stirred for 30min, the water was added in the form of steam, and then the molded coal was pressed, and then dried at 110 ℃ for 4h, and then the cold strength of the molded coal was tested.
According to the technical scheme, the boride is added into the starch and the humate, so that the adhesive has good cold strength when applied to coal and coke, and the metal oxide is added into the adhesive, so that the cold strength and the hot strength of the adhesive in application are improved, the product has high strength in the carrying and using processes, a good form is still kept at high temperature, the slag falling condition in the using process is also reduced, the long-term thermal stability of the coal and coke products is improved, more heat is released from the coal and coke products, and the high use value is achieved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content of the above disclosure into equivalent embodiments with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. The high-temperature-resistant high-strength adhesive is characterized by comprising, by weight, 1-60 parts of starch, 10-80 parts of humate, 0.1-50 parts of boride and 0.1-40 parts of metal oxide, wherein the relative molecular weight of the metal oxide is more than 30.
2. The high temperature and high strength adhesive according to claim 1, wherein the humate is at least one selected from the group consisting of potassium humate, sodium humate, calcium humate, magnesium humate, manganese humate, zinc humate, and potassium fulvate.
3. The high temperature and high strength adhesive of claim 1 wherein the boride is borax and/or boric acid.
4. The high temperature-resistant high strength adhesive according to claim 1, wherein the metal oxide is an iron-based oxide and/or a manganese-based oxide.
5. The high-temperature-resistant high-strength adhesive as claimed in claim 4, wherein the metal oxide is a mixture of an iron-based oxide and a manganese-based oxide, and the mass ratio of the iron-based oxide to the manganese-based oxide is 1: (1-5).
6. The high-temperature-resistant high-strength adhesive according to claim 5, wherein the iron oxide is at least one selected from the group consisting of ferrous oxide, ferric dioxide, ferric trioxide, and ferroferric oxide.
7. The high temperature-resistant high strength adhesive according to claim 5, wherein the manganese-based oxide is at least one selected from the group consisting of manganese monoxide, manganese dioxide, manganese trioxide and manganomanganic oxide.
8. The high-temperature-resistant high-strength adhesive according to any one of claims 1 to 7, wherein the raw material further comprises at least one of bentonite, phosphate, gypsum powder, sodium silicate, polyacrylamide-based high-molecular polymer, silicon-based compound, cellulose and its derivatives, vegetable gum and its derivatives, and animal gum and its derivatives.
9. A method for preparing a high temperature resistant high strength adhesive according to any one of claims 1 to 8, characterized by comprising at least the steps of: the preparation raw materials are physically mixed to obtain the product.
10. The high temperature resistant high strength adhesive prepared according to claim 9 is applied to the molding processing of briquette, formed coke, metallurgical coke, foundry coke and barbecue carbon.
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