阅读说明：本技术 一种利用气化渣制备橡胶用复合碳质超细粉体材料的方法 (Method for preparing composite carbon superfine powder material for rubber by using gasified slag ) 是由 张宝 李海瑞 张永 杜宝 焦丽 于 2021-05-21 设计创作，主要内容包括：本发明公开了一种利用气化渣制备橡胶用复合碳质超细粉体材料的方法,其特征在于,采用气化渣制备碳质超细粉体材料,控制碳质超细粉体材料中碳含含量为50％～70％,然后通过超细立磨进行机械活化处理后将碳质超细粉体材料添加到橡胶中即可。本发明的目的是提供一种利用气化渣制备橡胶用复合碳质超细粉体材料的方法,助该方法可将气化渣回收的碳质超细粉体材料用于橡胶行业,即可降低原有的资源消耗问题,又可降低橡胶的生产成本,更能解决煤气化渣的资源化利用问题。(The invention discloses a method for preparing a composite carbon superfine powder material for rubber by using gasified slag, which is characterized in that the carbon superfine powder material is prepared by using the gasified slag, the carbon content in the carbon superfine powder material is controlled to be 50-70%, and then the carbon superfine powder material is added into the rubber after mechanical activation treatment is carried out by a superfine vertical mill. The invention aims to provide a method for preparing a composite carbon superfine powder material for rubber by using gasified slag, which can be used for applying the carbon superfine powder material recovered from the gasified slag to the rubber industry, thus reducing the original resource consumption problem, reducing the production cost of rubber and further solving the resource utilization problem of the gasified slag.)

1. A method for preparing a composite carbon superfine powder material for rubber by using gasified slag is characterized in that the carbon superfine powder material is prepared by using the gasified slag, the carbon content in the carbon superfine powder material is controlled to be 50% -70%, and then the carbon superfine powder material is added into rubber after mechanical activation treatment is carried out by a superfine vertical mill.

2. The method for preparing the composite carbonaceous ultrafine powder material for rubber from the gasification slag according to claim 1, wherein the conditions of the mechanical activation treatment are as follows: the activation time is 30-90 min, the particle size distribution D50 is 0.5-2 μm, the particle size distribution D90 is 1-5 μm, the specific surface area is more than or equal to 1500cm2/g, and the apparent bulk specific gravity is 0.1-0.3 g/cm³。

3. The method for preparing the composite carbon superfine powder material for rubber by using the gasified slag as claimed in claim 1, wherein the proportion of the prepared composite carbon superfine powder material added into rubber is 5-15%, the tensile strength of the rubber can reach 21-23 MPa, the elongation is 600-620%, and the hardness can reach 67-70 degrees A, which is similar to the performance of the rubber without the material.

4. The method for preparing the composite carbonaceous ultrafine powder material for rubber from the gasified slag according to claim 1, wherein the specific process for preparing the carbonaceous ultrafine powder material from the gasified slag comprises the following steps: the gasified slag is sent into a storage bin, the top of the storage bin is provided with a water fluidizing device to carry out uniform mixing and fluidizing treatment on water and the gasified slag, then the water and the gasified slag enter a cyclone separation device through a flow diverter, under the synergistic action of a shearing force field and a longitudinal flow field, the carbonaceous material and the gasified slag are efficiently separated, then the water is separated by a solid-liquid separator, the water is returned to the original system, and the carbonaceous superfine powder material can be obtained after the solid phase is dried.

5. The method for preparing the composite carbonaceous superfine powder material for rubber from the gasified slag as claimed in claim 4, wherein the water flowing into the storage bin from the water fluidizing device is uniformly mixed with the gasified slag for fluidizing for 5-30 min, the mass percent of the water to the slag is 6-15: 1, and the water flow rate is as follows: 0.3-1 m/s; the material flow rate entering the drainage device from the stock bin is as follows: 0.3-1 m/s; the angle and the speed of the liquid entering the cyclone separation device from the drainage device are 0-30 degrees and the linear speed is 0.3-1 m/s, wherein the tangential angle alpha between the drainage device and the circumferential edge of the cyclone separation device is 0-30 degrees; technical parameters of the cyclone separation device: the diameter of the cylinder body is 1200mm, the taper angle is 10-20 degrees, and the diameter of the overflow pipe is 150-220 degrees; the recovery rate of the carbon superfine powder material from the gasified slag can reach 40 to 70 percent.

Technical Field

The invention relates to the field of solid waste resource utilization and rubber, in particular to a method for preparing a composite carbon superfine powder material for rubber by utilizing gasified slag.

Background

At present, coal still occupies the leading position of energy consumption in China, in order to change the current situation of coal in energy conservation and environmental protection in China and promote the clean utilization technology of coal resources in China, the coal chemical technology is produced at the same time, and the capacity and the yield of the main products in the existing coal chemical industry in China are continuously kept the first in the world for many years. The yield of olefin prepared from coal (methanol) in China is 1582 million tons, the yield of coal gas is 51.1 million m3, the yield of ethylene glycol prepared from coal is 483 million tons, and the yield of coal oil is 921 million tons in 2019. Along with the annual increase of the oil and gas production yield of coal-to-liquid in China, the production amount of gasification slag is increased. According to statistics, the annual discharge amount of gasified slag in China in recent years is about 2700 million tons. Therefore, a new method for recycling gasification slag is urgently needed to be developed.

At present, the gasified slag is mainly treated by stacking and burying, which not only occupies a large amount of land, but also pollutes the surrounding environment. Although the research make internal disorder or usurp on the related gasified slag is reported at home and abroad, the research is mostly in the laboratory research stage and is mostly concentrated in the fields of building materials, repairing agricultural soil, building roads and the like. But the research and application technology on the aspect of recovering the carbonaceous superfine powder material in the gasified slag has not been reported yet. The annual consumption of the rubber industry in China is huge, the yield of rubber products in China reaches 4979.3 ten thousand tons only in 2019, the addition sum of various auxiliaries is more than 40% of the total amount of the rubber, the production cost of the rubber is improved, and the resource consumption is increased. If a method which can reduce the resource consumption and the rubber production cost can be found, the method has great significance for the rubber industry.

Disclosure of Invention

The invention aims to provide a method for preparing a composite carbon superfine powder material for rubber by using gasified slag, which can be used for applying the carbon superfine powder material recovered from the gasified slag to the rubber industry, thus reducing the original resource consumption problem and the production cost of the rubber.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention relates to a method for preparing a composite carbon superfine powder material for rubber by utilizing gasified slag, which comprises the steps of preparing the carbon superfine powder material by utilizing the gasified slag, controlling the carbon content in the carbon superfine powder material to be 50-70%, and adding the carbon superfine powder material into rubber after mechanical activation treatment is carried out by a superfine vertical mill.

Further, the conditions of the mechanical activation treatment are as follows: the activation time is 30-90 min, the particle size distribution D50 is 0.5-2 μm, the particle size distribution D90 is 1-5 μm, the specific surface area is more than or equal to 1500cm2/g, and the apparent bulk specific gravity is 0.1-0.3 g/cm³。

Furthermore, the proportion of the prepared composite carbon superfine powder material added in rubber is 5-15%, the tensile strength can reach 21-23 MPa, the elongation is 600-620%, and the hardness can reach 67-70 degrees A, which is similar to the performance of rubber without the material.

Further, the specific process for preparing the carbon superfine powder material by adopting the gasified slag comprises the following steps: the gasified slag is fed into a storage bin, the top of the storage bin is provided with a water fluidizing device to carry out uniform mixing and fluidizing treatment on water and the gasified slag, then the water and the gasified slag enter a cyclone separation device through a flow guider, under the synergistic action of a shearing force field and a longitudinal flow field, the carbonaceous material and the gasified slag are efficiently separated, and then the water is separated by a solid-liquid separator and returns to the original water

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

the invention can ensure that the recycled carbon superfine powder material is applied to rubber, can ensure that the addition amount of the material in the rubber reaches 5 to 15 percent on the premise of not influencing the comprehensive performance of the rubber, not only can save the auxiliary agent resource in the rubber, but also can reduce the production cost, and can solve the problem of resource utilization of the gasified slag.

Drawings

The invention is further illustrated in the following description with reference to the drawings.

FIG. 1 is a flow chart of the preparation process of the carbonaceous ultrafine powder material of the invention.

Detailed Description

Example 1:

firstly, the methodThe method comprises the steps of preparing a carbon superfine powder material, feeding gasified slag into a bin, uniformly mixing and fluidizing the water and the gasified slag by a water fluidizing device at the top of the bin, then feeding the mixture into a cyclone separation device through a drainage device, efficiently separating the carbon material from the gasified slag under the synergistic action of a shearing force field and a longitudinal flow field, separating the mixture by a solid-liquid separator, returning the water into the system, drying the solid phase to obtain the carbon superfine powder material, controlling the carbon content of the carbon superfine powder material to be 50% in the recovery process by taking the recovered carbon superfine powder material as a raw material, and mechanically activating the carbon superfine powder material by a superfine vertical mill for 90min, wherein the particle size distribution D50 of the composite carbon superfine powder material is 0.5 mu m, D90 is 1 mu m, and the specific surface area is 2807cm²(g) apparent bulk specific gravity of 0.1g/cm³. When the material is added into rubber in a proportion of 10%, the tensile strength of the rubber can reach 21.92MPa, the elongation can reach 610%, and the hardness can reach 68 ℃ A, which is similar to the performance of the rubber without the material.

Wherein the uniform mixing and fluidizing time of water entering a storage bin and gasified slag in the water flowing device is 5-30 min; wherein the mass percentage of water to gasified slag is 6-15: 1; the water flow rate in the water flowing device is as follows: 0.3-1 m/s; the material flow rate entering the drainage device from the stock bin is as follows: 0.3-1 m/s; the tangential angle alpha of the circumferential edge of the flow diverter and the cyclone separation device is 0-30 degrees, and the linear velocity is 0.3-1 m/s; the technical parameters of the cyclone separation device are as follows: the diameter of the cylinder body is 1200mm, the taper angle is 10-20 degrees, and the diameter of the overflow pipe is 150-220 mm.

Example 2:

firstly, preparing a carbon superfine powder material, conveying gasified slag into a bin, uniformly mixing and fluidizing water and the gasified slag at the top of the bin by a water fluidizing device, then entering a cyclone separation device through a drainage device, efficiently separating the carbon material and the gasified slag under the synergistic action of a shearing force field and a longitudinal flow field, separating by a solid-liquid separator, returning water to the system, drying a solid phase to obtain the carbon superfine powder material, taking the recovered carbon superfine powder material as a raw material, and controlling the carbon superfine powder in the recovery processThe carbon content in the bulk material is 70 percent, and after the mechanical activation treatment time of the bulk material by an ultrafine vertical mill is 30min, the particle size distribution D50 of the composite carbon ultrafine powder material is 1 mu m, the D90 is 1 mu m, the specific surface area is 2410cm2/g, and the apparent bulk specific gravity is 0.2g/cm³. When the material is added into rubber in a proportion of 15%, the tensile strength of the rubber can reach 22.4MPa, the elongation can reach 618%, and the hardness can reach 69 DEG A, which is similar to the performance of the rubber without the material.

Example 3:

firstly, preparing a carbon superfine powder material, sending gasified slag into a bin, carrying out uniform mixing fluidization treatment on water and the gasified slag at the top of the bin through a water fluidization device, then the carbon material and the gasification slag are efficiently separated in a cyclone separation device through a flow diverter under the synergistic action of a shearing force field and a longitudinal flow field, and then the carbon material and the gasification slag are separated by a solid-liquid separator, water returns to the system, the solid phase is dried to obtain the carbon superfine powder material, and the recovered carbon superfine powder material is used as the raw material, controlling the carbon content of the carbon superfine powder material to be 60 percent in the recovery process, and performing mechanical activation treatment for 60min by a superfine vertical mill, the particle size distribution D50 of the composite carbon superfine powder material is 2 mu m, D90 is 5 mu m, the specific surface area is 1600cm2/g, and the apparent bulk specific gravity is 0.3g/cm 3. When the material is added into rubber in a proportion of 10%, the tensile strength of the rubber can reach 22.1MPa, the elongation can reach 619%, and the hardness can reach 68 DEG A, which is similar to the performance of the rubber without the material.

Example 4:

firstly, preparing a carbon superfine powder material, sending gasified slag into a bin, uniformly mixing and fluidizing water and the gasified slag at the top of the bin by a water fluidizing device, then entering a cyclone separation device through a drainage device, efficiently separating the carbon material and the gasified slag under the synergistic action of a shearing force field and a longitudinal flow field, separating by a solid-liquid separator, returning water to the system, drying a solid phase to obtain the carbon superfine powder material, taking the recovered carbon superfine powder material as a raw material, controlling the carbon content of the carbon superfine powder material to be 70 percent in the recovery process,and performing mechanical activation treatment for 80min by using an ultrafine vertical mill, wherein the particle size distribution D50 of the composite carbon ultrafine powder material is 1 μm, the D90 is 3 μm, and the specific surface area is 1900cm²(g) apparent bulk specific gravity of 0.2g/cm³. When the material is added into rubber in a proportion of 8%, the tensile strength of the rubber can reach 23MPa, the elongation can reach 620%, and the hardness can reach 70 degrees A, which is similar to the performance of the rubber before the material is added.

Example 5:

firstly, preparing a carbon superfine powder material, sending gasified slag into a bin, carrying out uniform mixing fluidization treatment on water and the gasified slag at the top of the bin through a water fluidization device, then the carbon material and the gasification slag are efficiently separated in a cyclone separation device through a flow diverter under the synergistic action of a shearing force field and a longitudinal flow field, and then the carbon material and the gasification slag are separated by a solid-liquid separator, water returns to the system, the solid phase is dried to obtain the carbon superfine powder material, and the recovered carbon superfine powder material is used as the raw material, controlling the carbon content of 55% in the carbon superfine powder material in the recovery process, performing mechanical activation treatment for 45min by using a superfine vertical mill, the particle size distribution D50 of the composite carbon superfine powder material is 1 μm, D90 is 2 μm, the specific surface area is 1900cm2/g, and the apparent bulk specific gravity is 0.15g/cm 3. When the material is added into rubber at a ratio of 6%, the tensile strength of the rubber can reach 21MPa, the elongation can reach 610%, and the hardness can reach 67 DEG A, which is similar to the performance of the rubber without the material.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.