Efficient coal-saving agent for cement clinker firing and preparation process and application of efficient coal-saving agent

Abstract

The invention discloses a high-efficiency coal-saving agent for cement clinker firing and a preparation process and application thereof. The coal saving agent comprises the following components in parts by weight: 10-20 parts of a penetrating agent, 7-15 parts of a dispersing agent, 20-25 parts of a catalyst, 9-13 parts of a swelling agent, 30-48 parts of a heat supply agent and 60-70 parts of hydrogen peroxide. Wherein the heat supply agent is powder formed by solidifying aluminum powder, iron oxide powder, magnesium powder and glass powder, and the mass ratio of the aluminum powder to the iron oxide powder is 1: (4-7). The magnesium powder accounts for 12-20% of the total mass of the aluminum powder and the iron oxide powder. The glass powder accounts for 14-16% of the total mass of the aluminum powder and the iron oxide powder. The coal saving agent not only can effectively reduce the use amount of coal, but also has a sulfur fixation effect, so that the emission of sulfur oxide gas is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coal-saving agents, and in particular to a high-efficiency coal-saving agent for cement clinker burning, and a preparation process and application thereof. Background Art

[0002] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention, and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] Cement clinker is obtained by calcining and grinding raw materials. Since the calcination process is usually carried out at high temperature, a large amount of coal is consumed to maintain the high temperature. Studies have shown that burning 1 ton of cement clinker consumes about 100 kg of standard coal and emits about 0.8 tons of carbon dioxide and pollutants such as sulfur oxides and nitrogen oxides. Therefore, the cement production industry is a high-energy-consuming and high-pollution industry.

[0004] In order to improve the thermal efficiency of coal, save energy and increase efficiency, adding coal-saving agents to the coal / coal powder used for cement clinker calcination is a common method. Since reducing the amount of coal can also reduce the emission of gases such as carbon dioxide, the use of coal-saving agents can bring both economic and environmental benefits to enterprises. The current coal-saving agents mainly achieve the effect of saving coal by promoting the full combustion of coal and improving its thermal efficiency. However, this method has limited effect on saving coal, especially with the reduction of high-quality coal resources, the use of traditional coal-saving agents is becoming more and more limited. Summary of the invention

[0005] The present invention provides a high-efficiency coal-saving agent for cement clinker burning and its preparation process and application, which can not only effectively reduce the amount of coal used, but also has the function of fixing sulfur, thereby helping to reduce the emission of sulfur oxide gas. Specifically, the technical solution of the present invention is as follows.

[0006] First, the present invention discloses a high-efficiency coal-saving agent for cement clinker firing, which comprises: 10-20 parts by weight of a penetrant, 7-15 parts by weight of a dispersant, 20-25 parts by weight of a catalyst, 9-13 parts by weight of a leavening agent, 30-48 parts by weight of a heating agent, and 60-70 parts by weight of hydrogen peroxide. The heating agent is a powder formed by consolidating aluminum powder, iron oxide powder, magnesium powder, and glass powder, and the mass ratio of the aluminum powder to the iron oxide powder is 1:4-7. The magnesium powder accounts for 12-20% of the total mass of the aluminum powder and the iron oxide powder, and the glass powder accounts for 14-16% of the total mass of the aluminum powder and the iron oxide powder.

[0007] Furthermore, the penetrant includes any one of polyoxyethylene isooctyl alcohol ether, dodecyltrimethylammonium chloride, sodium dodecyl sulfonate, alkylphenol polyoxyethylene ether, etc.

[0008] Furthermore, the dispersant includes any one of polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate and the like.

[0009] Furthermore, the catalyst includes at least one of zinc chloride, titanium trichloride, cerium nitrate, iron sulfate, copper sulfate and the like.

[0010] Furthermore, the leavening agent includes at least one of sodium chloride, potassium chloride, sodium bicarbonate, sodium lignin sulfonate, etc.

[0011] Further, the iron oxide includes at least one of ferric oxide and ferrosoferric oxide. Optionally, the particle size of the heat supply agent is 30-50 mesh.

[0012] Furthermore, the mass fraction of the hydrogen peroxide is 20-35%.

[0013] Secondly, the present invention discloses a method for preparing the high-efficiency coal-saving agent for cement clinker burning, comprising the following steps: (1) In a protective atmosphere, the aluminum powder, iron oxide powder, magnesium powder and glass powder are mixed uniformly in proportion and heated to a temperature above the melting point of the glass powder. The mixture is kept warm and then cooled to room temperature. The obtained product is then mixed with isopropyl alcohol and ground to obtain the heat supply agent.

[0014] (2) The penetrant, dispersant, catalyst, bulking agent and heating agent are added into hydrogen peroxide and ultrasonically dispersed to obtain the coal saving agent.

[0015] Furthermore, in step (1), the insulation time is 10 to 20 minutes.

[0016] Furthermore, in step (1), the ratio of the product to isopropanol is 1 g: 3-6 ml.

[0017] Furthermore, in step (2), the ultrasonic dispersion time is 5 to 10 minutes.

[0018] Finally, the present invention discloses the application of the high-efficiency coal-saving agent for cement clinker burning in coal powder. Optionally, the addition amount of the coal-saving agent is not less than 3% of the mass of the coal powder.

[0019] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects: The coal-saving agent of the present invention not only contains a penetrant, a catalyst and a bulking agent, which can effectively promote the combustion of coal powder and improve the thermal efficiency of coal powder, but also uses hydrogen peroxide as the dispersion medium of the coal-saving agent, which can fully penetrate into the coal powder particles and form oxygen and water after decomposition at high temperature. These oxygen can make the combustion of coal powder more complete, reduce the heat loss caused by incomplete combustion, and also reduce the emission of smoke. At the same time, the water reacts with the carbonaceous material provided by the coal powder to form water gas, which can release a large amount of heat after combustion, and the oxygen and water formed after the decomposition of hydrogen peroxide are both clean substances, which promote the thermal efficiency of coal powder without causing additional pollution. In addition, the coal-saving agent of the present invention also has a heating agent powder formed by aluminum powder, iron oxide powder, magnesium powder and glass powder. After mixing with the coal powder particles, the high heat generated by the combustion of the magnesium powder at high temperature further triggers the aluminum powder and the iron oxide powder to undergo a thermite reaction, which can release a large amount of heat, and its calorific value is significantly higher than that of coal powder, so that a high temperature state can be maintained while reducing the amount of coal powder. Moreover, the eruption effect formed by the above-mentioned thermite reaction will also promote the dispersion of coal powder particles, destroy the solidified coal powder, make it contact with oxygen for combustion, and improve the combustion efficiency of coal powder. At the same time, the iron formed by the thermite reaction has a sulfur fixation effect, reducing the emission of sulfur oxide gas caused by the combustion of coal powder. And another product formed by the thermite reaction, aluminum oxide, has the effect of promoting the sulfur fixation effect, because the acidic site characteristics of aluminum oxide can adsorb sulfur oxide gas, and because the iron and aluminum oxide are associated, it makes it easier for iron to capture these sulfur oxide gases for reaction, and convert sulfur oxide gas into sulfate for fixation. In addition, the iron oxide powder also has a sulfur fixation effect. Therefore, the heat supply agent of the present invention can not only reduce the amount of coal powder, but also use its products and reactants to reduce the emission of sulfur oxide gas, reducing the environmental pollution caused. In addition, because the heat supply agent of the present invention consolidates the components together through the glass powder that is melted and then cooled and solidified, the intensity of the thermite reaction is effectively reduced, the reaction between the aluminum powder and the iron oxide powder lasts longer, the utilization efficiency of the heat supply agent is improved, and it is more conducive to reducing the amount of coal powder used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 The heat supply agent sample diagram prepared in the following Example 1; Figure 2 This is a diagram of the coal-saving agent sample prepared in the following Example 1. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods in the following examples without specifying specific conditions are usually carried out under conventional conditions or under conditions recommended by the manufacturer.

[0023] Unless otherwise defined, all professional and scientific terms used in the present invention have the same meanings as those familiar to those skilled in the art. The reagents or raw materials used in the present invention can be purchased through conventional channels. Unless otherwise specified, the reagents or raw materials used in the present invention are used in a conventional manner in the art or in accordance with the product instructions.

[0024] In addition, any method and material similar or equivalent to the described content can be applied to the method of the present invention. The preferred implementation methods and materials described in the present invention are only for demonstration purposes. The technical solution of the present invention is now further described in conjunction with specific implementation methods.

[0025] Example 1 A preparation process of a high-efficiency coal-saving agent for cement clinker burning comprises the following steps: (1) Mix aluminum powder, ferric oxide powder, magnesium powder and glass powder (melting temperature is about 420~450℃) and stir evenly, wherein the mass ratio of aluminum powder to ferric oxide powder is 1:5, the magnesium powder accounts for 17% of the total mass of aluminum powder and iron oxide powder, and the glass powder accounts for 14% of the total mass of aluminum powder and ferric oxide powder. Then heat the formed mixture to 500℃ in an argon atmosphere at a heating rate of 10℃ and keep it warm for 10 minutes, then cool it to room temperature, crush the obtained product and mix it with isopropanol at a ratio of 1g:5ml and grind it. After completion, dry and sieve it to obtain a 30~50 mesh heating agent (such as Figure 1 as shown), for standby use.

[0026] (2) Take the following components: 13 parts by weight of a penetrant (sodium dodecyl sulfate), 10 parts by weight of a dispersant (sodium tripolyphosphate), 25 parts by weight of a catalyst (zinc chloride), 11 parts by weight of a leavening agent (sodium chloride), 40 parts by weight of the heating agent prepared in this example, and 65 parts by weight of 30% hydrogen peroxide.

[0027] (3) Add the penetrant, dispersant, catalyst, bulking agent, and heating agent into hydrogen peroxide and disperse them by ultrasonic for 8 minutes to obtain the coal-saving agent, such as Figure 2 shown.

[0028] The coal-saving agent prepared in this embodiment is added to the coal powder at a ratio of 4% of the coal powder mass, and after being mixed evenly, the coal-saving rate and sulfur oxide (in terms of sulfur dioxide and sulfur trioxide) emission reduction rate relative to the blank group (without any coal-saving agent) are tested, wherein: coal-saving rate = (R2-R1) / R2, R1 is the grate speed when the coal-saving agent is used for stable heating, and R2 is the grate speed when the blank group is used for stable heating. The emission reduction rate = (M2-M1) / M2, M2 is the mass of sulfur oxides emitted by the blank group, and M1 is the mass of sulfur oxides emitted when the coal-saving agent is used. The results are shown in the following table.

[0029] Example 2 A preparation process of a high-efficiency coal-saving agent for cement clinker burning comprises the following steps: (1) Mix aluminum powder, ferric oxide powder, magnesium powder and glass powder (melting temperature is about 475~510℃) and stir evenly, wherein the mass ratio of aluminum powder to ferric oxide powder is 1:7, the magnesium powder is 20% of the total mass of aluminum powder and iron oxide powder, and the glass powder is 16% of the total mass of aluminum powder and ferric oxide powder. Then heat the formed mixture to 540℃ in an argon atmosphere at a heating rate of 10℃ and keep it warm for 20min, then cool it to room temperature, crush the obtained product and mix it with isopropanol at a ratio of 1g:6ml and grind it, dry it and sieve it to obtain a 30~40 mesh heating agent for standby use.

[0030] (2) Take the following components: 10 parts by weight of a penetrant (isooctanol polyoxyethylene ether), 7 parts by weight of a dispersant (sodium dodecylbenzene sulfonate), 20 parts by weight of a catalyst (ferric sulfate), 9 parts by weight of a leavening agent (sodium lignin sulfonate), 30 parts by weight of the heating agent prepared in this example, and 60 parts by weight of 35% hydrogen peroxide.

[0031] (3) The penetrant, dispersant, catalyst, bulking agent and heating agent are added into hydrogen peroxide and then ultrasonically dispersed for 5 minutes to obtain the coal saving agent.

[0032] The coal-saving agent prepared in this embodiment is added to coal powder at a ratio of 3% by mass of coal powder. After uniform mixing, the coal-saving rate and sulfur oxide (measured in sulfur dioxide and sulfur trioxide) emission reduction rate relative to the blank group (without any coal-saving agent) are tested. The calculation method is the same as that in the above-mentioned Example 1. The results are shown in the following table.

[0033] Example 3 A preparation process of a high-efficiency coal-saving agent for cement clinker burning comprises the following steps: (1) Mix aluminum powder, ferroferric oxide powder, magnesium powder and glass powder (melting temperature is about 490-530°C) and stir evenly, wherein the mass ratio of aluminum powder to ferroferric oxide powder is 1:4, the magnesium powder accounts for 12% of the total mass of aluminum powder and iron oxide powder, and the glass powder accounts for 15% of the total mass of aluminum powder and ferroferric oxide powder. Then heat the formed mixture to 560°C at a heating rate of 10°C in an argon atmosphere and keep it warm for 15 minutes, then cool it to room temperature, crush the obtained product, mix it with isopropanol at a ratio of 1g:3ml, and grind it. After completion, dry and sieve it to obtain a 30-50 mesh heating agent for standby use.

[0034] (2) Take the following components: 20 parts by weight of a penetrant (dodecyltrimethylammonium chloride), 15 parts by weight of a dispersant (sodium pyrophosphate), 23 parts by weight of a catalyst (titanium trichloride), 13 parts by weight of a leavening agent (sodium bicarbonate), 48 parts by weight of the heating agent prepared in this example, and 70 parts by weight of 20% hydrogen peroxide.

[0035] (3) The penetrant, dispersant, catalyst, bulking agent and heating agent are added into hydrogen peroxide and then ultrasonically dispersed for 10 minutes to obtain the coal saving agent.

[0036] The coal-saving agent prepared in this embodiment is added to coal powder at a ratio of 6% by mass of coal powder. After being evenly mixed, the coal-saving rate and sulfur oxide (measured in sulfur dioxide and sulfur trioxide) emission reduction rate relative to the blank group (without any coal-saving agent) are tested. The calculation method is the same as that in the above-mentioned Example 1. The results are shown in the following table.

[0037] Example 4 A preparation process of a high-efficiency coal-saving agent for cement clinker burning comprises the following steps: (1) Mix aluminum powder, ferric oxide powder, magnesium powder and glass powder (melting temperature is about 420-450°C) and stir evenly, wherein the mass ratio of aluminum powder to ferric oxide powder is 1:5, the magnesium powder accounts for 17% of the total mass of aluminum powder and iron oxide powder, and the glass powder accounts for 14% of the total mass of aluminum powder and ferric oxide powder. Then heat the formed mixture to 500°C at a heating rate of 10°C in an argon atmosphere and keep it warm for 10 minutes, then cool it to room temperature, crush the obtained product, mix it with isopropanol at a ratio of 1g:5ml, and grind it. After completion, dry and sieve it to obtain a 30-50 mesh heating agent for standby use.

[0038] (2) Take the following components: 13 parts by weight of a penetrant (sodium dodecyl sulfate), 10 parts by weight of a dispersant (sodium tripolyphosphate), 25 parts by weight of a catalyst (zinc chloride), 11 parts by weight of a leavening agent (sodium chloride), 40 parts by weight of the heating agent prepared in this example, and 65 parts by weight of clean water.

[0039] (3) The penetrant, dispersant, catalyst, bulking agent and heating agent are added into clean water and then ultrasonically dispersed for 8 minutes to obtain the coal saving agent.

[0040] The coal-saving agent prepared in this embodiment is added to coal powder at a ratio of 4% by mass of coal powder. After being evenly mixed, the coal-saving rate and sulfur oxide (measured in sulfur dioxide and sulfur trioxide) emission reduction rate relative to the blank group (without any coal-saving agent) are tested. The calculation method is the same as that in the above-mentioned Example 1. The results are shown in the following table.

[0041] Example 5 A preparation process of a high-efficiency coal-saving agent for cement clinker burning comprises the following steps: (1) Take the following components: 20 parts by weight of penetrant (dodecyltrimethylammonium chloride), 15 parts by weight of dispersant (sodium pyrophosphate), 23 parts by weight of catalyst (titanium trichloride), 13 parts by weight of leavening agent (sodium bicarbonate), and 70 parts by weight of 20% hydrogen peroxide.

[0042] (2) The penetrant, dispersant, catalyst and leavening agent are added into hydrogen peroxide and then ultrasonically dispersed for 10 minutes to obtain the coal saving agent.

[0043] The coal-saving agent prepared in this embodiment is added to coal powder at a ratio of 6% by mass of coal powder. After being evenly mixed, the coal-saving rate and sulfur oxide (measured in sulfur dioxide and sulfur trioxide) emission reduction rate relative to the blank group (without any coal-saving agent) are tested. The calculation method is the same as that in the above-mentioned Example 1. The results are shown in the following table.

[0044] Example 6 A preparation process of a high-efficiency coal-saving agent for cement clinker burning comprises the following steps: (1) Mix ferric oxide powder, magnesium powder and glass powder (melting temperature is about 420-450°C) and stir evenly, wherein the magnesium powder accounts for 17% of the mass of the ferric oxide powder and the glass powder accounts for 14% of the mass of the ferric oxide powder. Then heat the resulting mixture to 500°C at a heating rate of 10°C in an argon atmosphere and keep it warm for 10 minutes, then cool it to room temperature, crush the obtained product and mix it with isopropanol at a ratio of 1g:5ml and grind it, dry it, sieve it, and obtain a 30-50 mesh heating agent for standby use.

[0045] (2) Take the following components: 13 parts by weight of a penetrant (sodium dodecyl sulfate), 10 parts by weight of a dispersant (sodium tripolyphosphate), 25 parts by weight of a catalyst (zinc chloride), 11 parts by weight of a leavening agent (sodium chloride), 40 parts by weight of the heating agent prepared in this example, and 65 parts by weight of 30% hydrogen peroxide.

[0046] (3) The penetrant, dispersant, catalyst, bulking agent and heating agent are added into hydrogen peroxide and then ultrasonically dispersed for 8 minutes to obtain the coal saving agent.

[0047] The coal-saving agent prepared in this embodiment is added to coal powder at a ratio of 4% by mass of coal powder. After being evenly mixed, the coal-saving rate and sulfur oxide (measured in sulfur dioxide and sulfur trioxide) emission reduction rate relative to the blank group (without any coal-saving agent) are tested. The calculation method is the same as that in the above-mentioned Example 1. The results are shown in the following table.

[0048] Example 7 A preparation process of a high-efficiency coal-saving agent for cement clinker burning comprises the following steps: (1) Aluminum powder, magnesium powder and glass powder (melting temperature is about 475-510°C) are mixed and stirred evenly, wherein: the magnesium powder accounts for 20% of the mass of the aluminum powder, and the glass powder accounts for 16% of the mass of the aluminum powder. The resulting mixture is then heated to 540°C at a heating rate of 10°C in an argon atmosphere and kept warm for 20 minutes, then cooled to room temperature, the obtained product is crushed and mixed with isopropanol at a ratio of 1g:6ml, and then ground. After completion, it is dried and sieved to obtain a 30-40 mesh heating agent for standby use.

[0049] (2) Take the following components: 10 parts by weight of a penetrant (isooctanol polyoxyethylene ether), 7 parts by weight of a dispersant (sodium dodecylbenzene sulfonate), 20 parts by weight of a catalyst (ferric sulfate), 9 parts by weight of a leavening agent (sodium lignin sulfonate), 30 parts by weight of the heating agent prepared in this example, and 60 parts by weight of 35% hydrogen peroxide.

[0050] (3) The penetrant, dispersant, catalyst, bulking agent and heating agent are added into hydrogen peroxide and then ultrasonically dispersed for 5 minutes to obtain the coal saving agent.

[0051] The coal-saving agent prepared in this embodiment is added to coal powder at a ratio of 3% by mass of coal powder. After uniform mixing, the coal-saving rate and sulfur oxide (measured in sulfur dioxide and sulfur trioxide) emission reduction rate relative to the blank group (without any coal-saving agent) are tested. The calculation method is the same as that in the above-mentioned Example 1. The results are shown in the following table.

[0052] Example 8 A preparation process of a high-efficiency coal-saving agent for cement clinker burning comprises the following steps: (1) Mix aluminum powder, ferroferric oxide powder and glass powder (melting temperature is about 490-530°C) and stir evenly, wherein the mass ratio of aluminum powder to ferroferric oxide powder is 1:4, and the glass powder accounts for 15% of the total mass of aluminum powder and ferroferric oxide powder. Then heat the mixture to 560°C at a heating rate of 10°C in an argon atmosphere and keep it warm for 15 minutes, then cool it to room temperature, crush the obtained product, mix it with isopropanol at a ratio of 1g:3ml, and grind it. After completion, dry and sieve it to obtain a 30-50 mesh heating agent for standby use.

[0053] (2) Take the following components: 20 parts by weight of a penetrant (dodecyltrimethylammonium chloride), 15 parts by weight of a dispersant (sodium pyrophosphate), 23 parts by weight of a catalyst (titanium trichloride), 13 parts by weight of a leavening agent (sodium bicarbonate), 48 parts by weight of the heating agent prepared in this example, and 70 parts by weight of 20% hydrogen peroxide.

[0054] (3) The penetrant, dispersant, catalyst, bulking agent and heating agent are added into hydrogen peroxide and then ultrasonically dispersed for 10 minutes to obtain the coal saving agent.

[0055] The coal-saving agent prepared in this embodiment is added to coal powder at a ratio of 6% by mass of coal powder. After being evenly mixed, the coal-saving rate and sulfur oxide (measured in sulfur dioxide and sulfur trioxide) emission reduction rate relative to the blank group (without any coal-saving agent) are tested. The calculation method is the same as that in the above-mentioned Example 1. The results are shown in the following table.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-efficiency coal-saving agent for cement clinker burning, characterized in that: The composition comprises the following components: 10-20 parts by weight of a penetrant, 7-15 parts by weight of a dispersant, 20-25 parts by weight of a catalyst, 9-13 parts by weight of a leavening agent, 30-48 parts by weight of a heating agent and 60-70 parts by weight of hydrogen peroxide; wherein: The heat supply agent is a powder formed by consolidating aluminum powder, iron oxide powder, magnesium powder and glass powder, wherein the mass ratio of the aluminum powder to the iron oxide powder is 1:4-7; the magnesium powder accounts for 12-20% of the total mass of the aluminum powder and the iron oxide powder, and the glass powder accounts for 14-16% of the total mass of the aluminum powder and the iron oxide powder.

2. The high-efficiency coal-saving agent for cement clinker burning according to claim 1, characterized in that: The penetrant includes any one of polyoxyethylene isooctyl alcohol ether, dodecyl trimethyl ammonium chloride, sodium dodecyl sulfonate, and alkylphenol polyoxyethylene ether.

3. The high-efficiency coal-saving agent for cement clinker burning according to claim 1, characterized in that: The dispersant includes any one of polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium tripolyphosphate, sodium hexametaphosphate and sodium pyrophosphate.

4. The high-efficiency coal-saving agent for cement clinker burning according to claim 1, characterized in that: The catalyst comprises at least one of zinc chloride, titanium trichloride, cerium nitrate, iron sulfate and copper sulfate.

5. The high-efficiency coal-saving agent for cement clinker burning according to claim 1, characterized in that: The leavening agent includes at least one of sodium chloride, potassium chloride, sodium bicarbonate and sodium lignin sulfonate.

6. The high-efficiency coal-saving agent for cement clinker burning according to any one of claims 1 to 5, characterized in that: The iron oxide includes at least one of ferric oxide and ferroferric oxide; Optionally, the particle size of the heat supply agent is 30-50 mesh; Optionally, the mass fraction of the hydrogen peroxide is 20-35%.

7. The method for preparing the high-efficiency coal-saving agent for cement clinker burning according to any one of claims 1 to 6, characterized in that: The steps include: (1) in a protective atmosphere, the aluminum powder, iron oxide powder, magnesium powder and glass powder are mixed uniformly in proportion and heated to a temperature above the melting point of the glass powder, and then cooled to room temperature after heat preservation. The obtained product is then mixed with isopropyl alcohol and ground to obtain the heat supply agent; (2) The penetrant, dispersant, catalyst, bulking agent and heating agent are added into hydrogen peroxide and ultrasonically dispersed to obtain the coal saving agent.

8. The method for preparing the high-efficiency coal-saving agent for cement clinker burning according to claim 7, characterized in that: In step (1), the ratio of the product to isopropanol is 1 g: 3-6 ml; optionally, in step (1), the insulation time is 10-20 min.

9. The method for preparing the high-efficiency coal-saving agent for cement clinker burning according to claim 7 or 8, characterized in that: In step (2), the ultrasonic dispersion time is 5 to 10 minutes.

10. Use of the high-efficiency coal-saving agent for cement clinker firing as described in any one of claims 1-6, or the coal-saving agent obtained by the preparation method as described in any one of claims 7-9 in coal powder; optionally, the addition amount of the coal-saving agent is not less than 3% of the mass of the coal powder.

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