阅读说明：本技术 一种废弃焦炭粉粘接再利用燃料及其制作方法 (Waste coke powder bonded recycled fuel and preparation method thereof ) 是由 王忠英 王启丞 于桂玲 陈子坤 谢一夔 于香萍 邝永海 于 2020-10-27 设计创作，主要内容包括：本发明公开了一种废弃焦炭粉粘接再利用燃料,按质量份数计,该废弃焦炭粉粘接再利用燃料的配方包括：废弃焦炭粉95-105份,焦炭粘结剂24-36份,水20-30份和碳粉28-32份；该废弃焦炭粉粘接再利用燃料的焦炭粘结剂包括：水泥8-12份、膨润土8-12份、水玻璃8-12份。本发明废弃焦炭粉粘接再利用燃料中采用焦炭粉、粘结剂、水以及碳粉按一定配比混合制造成球状燃料,其制备成本低,并且充分利用废弃资源,减少环境污染,起到节能环保的作用；并且通过在废弃焦炭粉粘接再利用燃料中使用碳粉,增加了碳比,扩大了废弃焦炭粉粘接再利用燃料的适用范围,解决了现有工业废弃焦粉不能再利用,造成能源浪费,焦粉露天堆积,造成严重的粉尘污染的问题。(The invention discloses a waste coke powder bonding recycling fuel, which comprises the following components in parts by mass: 95-105 parts of waste coke powder, 24-36 parts of coke binder, 20-30 parts of water and 28-32 parts of carbon powder; the coke binder for bonding the waste coke powder to the recycled fuel comprises: 8-12 parts of cement, 8-12 parts of bentonite and 8-12 parts of water glass. The waste coke powder bonding and recycling fuel is prepared into spherical fuel by mixing the coke powder, the binder, the water and the carbon powder according to a certain proportion, the preparation cost is low, waste resources are fully utilized, the environmental pollution is reduced, and the effects of energy conservation and environmental protection are achieved; and the carbon powder is used in the waste coke powder bonded recycled fuel, so that the carbon ratio is increased, the application range of the waste coke powder bonded recycled fuel is expanded, and the problems that the waste coke powder in the existing industry cannot be recycled, the energy is wasted, the coke powder is accumulated in the open air, and the serious dust pollution is caused are solved.)

1. A waste coke powder bonded recycling fuel is characterized in that: the formula of the waste coke powder bonded recycled fuel comprises the following components in parts by weight: 95-105 parts of waste coke powder, 24-36 parts of coke binder, 20-30 parts of water and 28-32 parts of carbon powder;

the coke binder for bonding the waste coke powder to the recycled fuel comprises the following components in parts by weight: 8-12 parts of cement, 8-12 parts of bentonite and 8-12 parts of water glass.

2. The waste coke powder bonded recycle fuel according to claim 1, wherein: the coke binder for bonding the waste coke powder to the recycled fuel comprises the following components in parts by weight: 8-12 parts of cement, 8-12 parts of yellow mud and 8-12 parts of water glass.

3. The waste coke powder bonded recycle fuel according to claim 1, wherein: the coke binder for bonding the waste coke powder to the recycled fuel comprises the following components in parts by weight: 8-12 parts of cement, 4-6 parts of bentonite, 4-6 parts of yellow mud and 8-12 parts of water glass.

4. The waste coke powder bonded recycle fuel according to claim 1, wherein: the formula of the waste coke powder bonded recycled fuel comprises the following components in parts by weight: 105 parts of waste coke powder, 36 parts of coke binder, 30 parts of water and 32 parts of carbon powder.

5. The waste coke powder bonded recycle fuel according to claim 1, wherein: the formula of the waste coke powder bonded recycled fuel comprises the following components in parts by weight: 100 parts of waste coke powder, 30 parts of coke binder, 25 parts of water and 30 parts of carbon powder.

6. The waste coke powder bonded recycle fuel according to claim 1, wherein: the formula of the waste coke powder bonded recycled fuel comprises the following components in parts by weight: 95 parts of waste coke powder, 24 parts of coke binder, 20 parts of water and 28 parts of carbon powder.

7. The method for manufacturing the waste coke powder bonded fuel according to claim 1, comprising the steps of:

s1, preparing materials, namely taking 95-105 parts of waste coke powder, 28-32 parts of carbon powder, 20-30 parts of water, 8-12 parts of cement, 8-12 parts of bentonite and 8-12 parts of water glass for later use;

s2, stirring the binder, placing the weighed cement and bentonite into a stirrer to be stirred at room temperature and in a dry environment, adding the weighed water glass to be stirred uniformly after the weighed cement and bentonite are stirred uniformly;

s3, premixing, namely putting the weighed waste coke powder and carbon powder into a stirrer to be stirred uniformly;

s4, bonding and mixing, namely adding the bonding agent prepared in the step S2 into the step S3, simultaneously adding weighed water, and stirring and mixing for 5-10 minutes;

s5, extrusion molding, namely adding the mixture prepared in the step S4 into a disc pelletizer, and pressing into a sphere;

and S6, drying and storing, namely placing the spherical waste coke powder bonded and recycled fuel on a dry and ventilated ground, drying by using a dryer, and after the spherical waste coke powder bonded and recycled fuel is basically solidified, placing in the open air for several days and naturally drying, thus completing the preparation.

8. The method for manufacturing the waste coke powder bonded recycled fuel according to claim 6, wherein the method comprises the following steps: the room temperature in the step S2 is 22-26 ℃, and the relative humidity of the drying environment is 20-40%.

9. The method for manufacturing the waste coke powder bonded recycled fuel according to claim 6, wherein the method comprises the following steps: the spherical diameter in step S5 is 5-10 cm.

Technical Field

The invention belongs to the technical field of metallurgy, and particularly relates to a waste coke powder bonded recycling fuel; in particular to a method for preparing the fuel which is bonded and recycled by the waste coke powder.

Background

The coke, also called coke block and coke slag, is a kind of solid fuel, and is obtained by dry distillation of coal at high temperature of about 1000 deg.C, and its main component is fixed carbon, and its secondary component is ash content, and its volatile component and sulfur component are both very small, and the coke is silver gray, possesses metallic luster, hard and porous. The coke calorific value is most 26380 to 31400 kJ/part (6300 to 7500 kcal/part). There are three major types of metallurgical coke, foundry coke and chemical coke, depending on their uses. According to their sizes, they are divided into lump coke, broken coke and coke breeze. 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.

The coke is mainly used for blast furnace iron making and blast furnace smelting of nonferrous metals such as copper, lead, zinc, titanium, antimony, mercury and the like, plays the roles of a reducing agent, a heating agent and a stock column framework, and the coke is adopted for the iron-making blast furnace to replace the charcoal, thereby laying a foundation for the large scale of the modern blast furnace and being a great milestone in the metallurgical history. The sulfur in the iron and the limestone can play a role in binding coke powder in the extrusion process, the wood dust is much lower than the ignition point of the coke, the wood dust in the synthetic coke is firstly combusted to form air holes so as to improve the reaction rate and form more coke, the coke has good yielding performance and is easy to form during extrusion, the aim of adjusting the air hole rate can be achieved by adjusting the percentage, and in order to ensure that the blast furnace operation achieves better technical and economic indexes, the coke (metallurgical coke) for smelting must have proper chemical properties and physical properties, including thermal state properties in the smelting process. Besides being largely used for iron-smelting and non-ferrous metal smelting (metallurgical coke), the coke is also used for casting, chemical industry, calcium carbide and iron alloy.

The coke powder is a byproduct generated when industrial coke is crushed by production enterprises of metallurgy, chemical industry, calcium carbide and the like, and is discarded due to small granularity and non-compliance with production process requirements. According to investigation, most coke-using enterprises in China currently find no effective method for solving coke powder forming, and the waste coke powder can only be treated as low-grade fuel at low cost. The industrial waste coke powder can not be recycled, which not only causes a great deal of energy waste, increases the production cost and reduces the economic benefit, but also leads to the serious dust pollution to the environment because the waste coke powder is piled in the open air, thus providing a waste coke powder bonding recycling fuel and a manufacturing method thereof.

Disclosure of Invention

The invention aims to provide a waste coke powder bonded recycling fuel and a manufacturing method thereof, wherein the waste coke powder, a binder, water and carbon powder are mixed according to a certain proportion to manufacture a spherical fuel, the preparation cost is low, waste resources are fully utilized, the environmental pollution is reduced, and the effects of energy conservation and environmental protection are achieved; and the carbon powder is used in the waste coke powder bonded recycled fuel, so that the carbon ratio is increased, the waste coke powder bonded recycled fuel has a better combustion effect, the application range of the waste coke powder bonded recycled fuel is expanded, and the problems that the existing industrial waste coke powder cannot be recycled, the energy waste is caused, the coke powder is accumulated in the open air, and the serious dust pollution is caused are solved.

In order to achieve the purpose, the invention adopts the following technical scheme: a waste coke powder bonded recycling fuel is characterized in that: the formula of the waste coke powder bonded recycled fuel comprises the following components in parts by weight: 95-105 parts of waste coke powder, 24-36 parts of coke binder, 20-30 parts of water and 28-32 parts of carbon powder;

the coke binder for bonding the waste coke powder to the recycled fuel comprises the following components in parts by weight: 8-12 parts of cement, 8-12 parts of bentonite and 8-12 parts of water glass.

Preferably, the coke binder for binding the waste coke powder to the recycled fuel comprises the following components in parts by weight: 8-12 parts of cement, 8-12 parts of yellow mud and 8-12 parts of water glass.

Preferably, the coke binder for binding the waste coke powder to the recycled fuel comprises the following components in parts by weight: 8-12 parts of cement, 4-6 parts of bentonite, 4-6 parts of yellow mud and 8-12 parts of water glass.

Preferably, the formula of the waste coke powder bonded recycled fuel comprises the following components in parts by weight: 105 parts of waste coke powder, 36 parts of coke binder, 30 parts of water and 32 parts of carbon powder.

Preferably, the formula of the waste coke powder bonded recycled fuel comprises the following components in parts by weight: 100 parts of waste coke powder, 30 parts of coke binder, 25 parts of water and 30 parts of carbon powder.

Preferably, the formula of the waste coke powder bonded recycled fuel comprises the following components in parts by weight: 95 parts of waste coke powder, 24 parts of coke binder, 20 parts of water and 28 parts of carbon powder.

The invention also provides a preparation method of the waste coke powder bonded recycled fuel, which comprises the following steps:

s1, preparing materials, namely taking 95-105 parts of waste coke powder, 28-32 parts of carbon powder, 20-30 parts of water, 8-12 parts of cement, 8-12 parts of bentonite and 8-12 parts of water glass for later use;

s2, stirring the binder, placing the weighed cement and bentonite into a stirrer to be stirred at room temperature and in a dry environment, adding the weighed water glass to be stirred uniformly after the weighed cement and bentonite are stirred uniformly;

s3, premixing, namely putting the weighed waste coke powder and carbon powder into a stirrer to be stirred uniformly;

s4, bonding and mixing, namely adding the bonding agent prepared in the step S2 into the step S3, simultaneously adding weighed water, and stirring and mixing for 5-10 minutes;

s5, extrusion molding, namely adding the mixture prepared in the step S4 into a disc pelletizer, and pressing into a sphere;

and S6, drying and storing, namely placing the spherical waste coke powder bonded and recycled fuel on a dry and ventilated ground, drying by using a dryer, and after the spherical waste coke powder bonded and recycled fuel is basically solidified, placing in the open air for several days and naturally drying, thus completing the preparation.

Preferably, the room temperature in step S2 is 22-26 ℃, and the relative humidity of the drying environment is 20-40%.

Preferably, the spherical shape in step S5 has a diameter of 5 to 10 cm.

Compared with the prior art, the invention has the technical effects and advantages that: compared with the prior art, the waste coke powder bonded recycled fuel provided by the invention has the following advantages:

the waste coke powder bonding and recycling fuel is prepared into spherical fuel by mixing the coke powder, the binder, the water and the carbon powder according to a certain proportion, the preparation cost is low, waste resources are fully utilized, the environmental pollution is reduced, and the effects of energy conservation and environmental protection are achieved; and the carbon powder is used in the waste coke powder bonded recycled fuel, so that the carbon ratio is increased, the waste coke powder bonded recycled fuel has a better combustion effect, and the application range of the waste coke powder bonded recycled fuel is expanded.

Detailed Description

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

Example 1

The waste coke powder bonding recycling fuel comprises the following components in parts by weight: 105 parts of waste coke powder, 36 parts of coke binder, 30 parts of water and 32 parts of carbon powder;

the coke binder for bonding the waste coke powder to the recycled fuel comprises the following components in parts by weight: 12 parts of cement, 12 parts of bentonite and 12 parts of water glass.

The preparation method of the waste coke powder bonded recycled fuel comprises the following steps:

s1, preparing materials, namely taking 105 parts of waste coke powder, 32 parts of carbon powder, 30 parts of water, 12 parts of cement, 12 parts of bentonite and 12 parts of water glass for later use;

s2, stirring the binder, placing the weighed cement and bentonite into a stirrer to be stirred at room temperature and in a dry environment, adding the weighed water glass to be stirred uniformly after the weighed cement and bentonite are stirred uniformly;

s3, premixing, namely putting the weighed waste coke powder and carbon powder into a stirrer to be stirred uniformly;

s4, bonding and mixing, namely adding the bonding agent prepared in the step S2 into the step S3, simultaneously adding weighed water, and stirring and mixing for 5-10 minutes;

s5, extrusion molding, namely adding the mixture prepared in the step S4 into a disc pelletizer, and pressing into a sphere;

and S6, drying and storing, namely placing the spherical waste coke powder bonded and recycled fuel on a dry and ventilated ground, drying by using a dryer, and after the spherical waste coke powder bonded and recycled fuel is basically solidified, placing in the open air for several days and naturally drying, thus completing the preparation.

Wherein the room temperature in the step S2 is 22-26 ℃, and the relative humidity of the drying environment is 20-40%; the spherical diameter in step S5 is 5-10 cm.

Example 2

Different from the embodiment 1, the waste coke powder bonded recycling fuel comprises the following components in parts by weight: 100 parts of waste coke powder, 30 parts of coke binder, 25 parts of water and 30 parts of carbon powder;

the coke binder for bonding the waste coke powder to the recycled fuel comprises the following components in parts by weight: 10 parts of cement, 10 parts of bentonite and 10 parts of water glass.

Example 3

Different from the embodiment 1, the waste coke powder bonded recycling fuel comprises the following components in parts by weight: 95 parts of waste coke powder, 24 parts of coke binder, 20 parts of water and 28 parts of carbon powder;

the coke binder for bonding the waste coke powder to the recycled fuel comprises: 8 parts of cement, 8 parts of bentonite and 8 parts of water glass.

Example 4

Different from the embodiment 1, the waste coke powder bonded recycling fuel comprises the following components in parts by weight: 100 parts of waste coke powder, 30 parts of coke binder, 30 parts of water and 30 parts of carbon powder;

the coke binder for bonding the waste coke powder to the recycled fuel comprises: 10 parts of cement, 10 parts of yellow mud and 10 parts of water glass.

Example 5

Different from the embodiment 1, the waste coke powder bonded recycling fuel comprises the following components in parts by weight: 100 parts of waste coke powder, 30 parts of coke binder, 30 parts of water and 30 parts of carbon powder;

the coke binder for bonding the waste coke powder to the recycled fuel comprises: 10 parts of cement, 5 parts of bentonite, 5 parts of yellow mud and 10 parts of water glass.

Example 6

Different from the embodiment 1, the waste coke powder bonded recycling fuel comprises the following components in parts by weight: 100 parts of waste coke powder, 30 parts of coke binder, 20 parts of water and 30 parts of carbon powder;

the coke binder for bonding the waste coke powder to the recycled fuel comprises: 10 parts of cement, 4 parts of bentonite, 6 parts of yellow mud and 10 parts of water glass.

The specific formulation data for six sets of examples of the invention are given in the following table:

the waste coke powder is bonded in the recycled fuel, and the coke powder, the binder, the water and the carbon powder are mixed according to a certain proportion to prepare the spherical fuel, so that the preparation cost is low, the waste resources are fully utilized, the environmental pollution is reduced, and the effects of energy conservation and environmental protection are achieved; the carbon ratio is increased by using the carbon powder in the waste coke powder bonded recycled fuel, so that the waste coke powder bonded recycled fuel has a better combustion effect, and the application range of the waste coke powder bonded recycled fuel is expanded;

the waste coke powder bonded recycled fuel can be applied to the preheating stage of a ladle and a tundish in a steelmaking process, and the carburized product can be used in a blast furnace again. The tundish is a large turnover part commonly used in steelmaking continuous casting production, waste coke powder is required to be bonded before use to recycle heat generated by combustion of fuel, the lining of the tundish can be baked to about 1100 ℃, the production process requirement can be met, moisture in a pouring material can be fully and safely discharged during baking, the coating is prevented from falling off and a stopper rod is prevented from cracking in the baking process, natural gas used for ordinary preheating can be completely replaced, the preheating cost of the tundish is reduced, the environmental pollution is reduced, and the tundish is energy-saving and environment-friendly;

the waste coke powder bonding and recycling fuel can be applied to blending of a converter slag layer, the slag layer in a converter has great influence on the quality and components of smelted metal during metal smelting, slag is easy to remove in molten steel when the slag layer is thick, and the impurity content in the molten steel is high when the slag layer is thin, so that a proper slag layer is a main technical point of steel smelting.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.