阅读说明：本技术 一种石墨增碳剂及其制备方法 (Graphite recarburizing agent and preparation method thereof ) 是由 范海兵 高尚忠 谭荣德 高飞 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种石墨增碳剂,具体成分按重量比如下：固定碳280-300份、鳞片石墨85-95份、微晶石墨60-84份、人造石墨75-93份、干燥焦炭75-87份、无烟煤50-60、灰粉12-15份、挥发粉12-15份、硫20-50份、水17-30份以及粘结剂16-22份。本发明能够有效的通过多种步骤将不同物质中的碳元素实现混合,同时降低硫的含量,有效的提高产品中碳含量,同时对产品的尺寸以及形状实现了统一处理。(The invention discloses a graphite recarburizing agent which comprises the following specific components in parts by weight: 300 parts of fixed carbon 280 plus materials, 85-95 parts of crystalline flake graphite, 60-84 parts of microcrystalline graphite, 75-93 parts of artificial graphite, 75-87 parts of dry coke, 50-60 parts of anthracite, 12-15 parts of ash powder, 12-15 parts of volatile powder, 20-50 parts of sulfur, 17-30 parts of water and 16-22 parts of binder. The invention can effectively mix carbon elements in different substances through a plurality of steps, simultaneously reduce the content of sulfur, effectively improve the content of carbon in the product, and simultaneously realize uniform treatment on the size and the shape of the product.)

1. The graphite recarburizing agent is characterized by comprising the following specific components in percentage by weight: 300 parts of fixed carbon 280 plus materials, 85-95 parts of crystalline flake graphite, 60-84 parts of microcrystalline graphite, 75-93 parts of artificial graphite, 75-87 parts of dry coke, 50-60 parts of anthracite, 12-15 parts of ash powder, 12-15 parts of volatile powder, 20-50 parts of sulfur, 17-30 parts of water and 16-22 parts of binder.

2. The graphite recarburizing agent as defined in claim 1, wherein the amounts of the fixed carbon, flake graphite, artificial graphite, dry coke and anthracite are most preferably 285-290 parts, 88-93 parts, 70-80 parts, 81-90 parts, 79-83 parts, 55-59 parts, 13-14 parts, 21-24 parts, 22-28 parts and 17-21 parts, respectively.

3. A method for preparing the graphite recarburizer according to claims 1 to 2, characterized by comprising the steps of:

s1, pre-crushing of raw materials: pouring all the fixed carbon, the flake graphite, the microcrystalline graphite, the artificial graphite, the dry coke and the anthracite into a double-geared roller crusher to realize crushing, and controlling the crushing time to be 30-40 minutes when the raw materials completely enter the crusher;

s2, after the step S1 is completed, the crushed raw materials are placed into a storage hopper to be transported, the raw materials in the storage hopper are poured into a pot-type calcining furnace, the temperature is increased to 2400-2600 ℃, the discharging is realized after the heating control is carried out for 2-4 hours, and the melting and the dehydration are realized;

s3, after the step S2 is completed, injecting the condensed raw materials into a double-roll crusher to realize crushing, injecting the crushed raw materials into a vibrating screen to realize screening, injecting the raw materials left in the vibrating screen into the double-roll crusher again to realize crushing, injecting the raw materials passing through the vibrating screen into a ball mill to realize ball milling treatment, and controlling the time to be 10-20 minutes;

s4, placing the raw materials collected in the step S3 into a storage hopper, placing a batching vehicle at the lower end of the storage hopper, conveying the raw materials into a kneading pot through the batching vehicle, adding ash powder, volatile powder, sulfur, water and a binder into the kneading pot at one time, raising the temperature inside the kneading pot to 400 ℃ of 200 plus materials, and controlling the stirring time to be 44-56 minutes;

s5, after the step S4 is completed, the raw materials in the kneading pot are cooled and then transferred to a forming machine to realize extrusion or die pressing, and the raw materials are extruded and formed into a certain shape and size;

s6, after the extrusion forming in the S5 step is realized, roasting the raw materials is realized;

and S7, after the step S6 is completed, graphitizing the product.

4. The method for preparing the graphite recarburizer according to claim 3, wherein the binder is asphalt and spongy raw petroleum coke, and the weight ratio of the asphalt to the spongy raw petroleum coke is 1: 1.

5. The method as claimed in claim 3, wherein the step S6, the step S and the step S are carried out by loading the raw materials into a roasting furnace, heating for 5-8 hours, controlling the temperature at 2700-2900 ℃, and after roasting, connecting the raw materials with fixed sizes into a whole to improve the mechanical strength and the electrical and thermal conductivity of the materials.

6. The method as claimed in claim 3, wherein the graphitization treatment of the raw material is performed after the step S6 is completed, specifically, the raw material is placed in a resistance furnace, the temperature is controlled at 2100 ℃ and 2400 ℃, the heat is preserved for 2-3 hours, and the cooling treatment is performed after the processing is completed.

7. The method for preparing the graphite recarburizer according to claim 6, wherein the raw material is flattened and exposed to air after the processing is completed, thereby achieving natural cooling.

8. The method of claim 6, wherein after the step of S7 is completed, the cooled product is placed on a machine tool to achieve a more precise shape and size of the product.

Technical Field

The invention relates to the technical field of graphite carburant, in particular to a graphite carburant and a preparation method thereof.

Background

The carburant has various raw materials and different production processes, and comprises wood carbon, coal carbon, coke and graphite, wherein various types of carburant have various small types. The high-quality carburant generally refers to a graphitized carburant, and the arrangement of carbon atoms is in a graphite microscopic form under a high-temperature condition, so that the high-quality carburant is called graphitization;

the carbon content of the carburant on the existing market is low, so that the carbon content of the carburant cannot be well improved and the sulfur content cannot be reduced in the iron-making process.

Disclosure of Invention

The invention aims to solve the defects that the carbon content of a carburant cannot be well improved and the sulfur content cannot be well reduced in the prior art, and provides a graphite carburant and a preparation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

designing a graphite recarburizing agent, which comprises the following specific components in percentage by weight: 300 parts of fixed carbon 280 plus materials, 85-95 parts of crystalline flake graphite, 60-84 parts of microcrystalline graphite, 75-93 parts of artificial graphite, 75-87 parts of dry coke, 50-60 parts of anthracite, 12-15 parts of ash powder, 12-15 parts of volatile powder, 20-50 parts of sulfur, 17-30 parts of water and 16-22 parts of binder.

Preferably, the amounts of the fixed carbon, flake graphite, artificial graphite, dry coke and anthracite are most preferably 285-290 parts, 88-93 parts, 70-80 parts, 81-90 parts, 79-83 parts, 55-59 parts, 13-14 parts, 21-24 parts, 22-28 parts and 17-21 parts, respectively.

The invention also provides a preparation method of the graphite recarburizing agent, which comprises the following steps:

s1, pre-crushing of raw materials: pouring all the fixed carbon, the flake graphite, the microcrystalline graphite, the artificial graphite, the dry coke and the anthracite into a double-geared roller crusher to realize crushing, and controlling the crushing time to be 30-40 minutes when the raw materials completely enter the crusher;

s2, after the step S1 is completed, the crushed raw materials are placed into a storage hopper to be transported, the raw materials in the storage hopper are poured into a pot-type calcining furnace, the temperature is increased to 2400-2600 ℃, the discharging is realized after the heating control is carried out for 2-4 hours, and the melting and the dehydration are realized;

s3, after the step S2 is completed, injecting the condensed raw materials into a double-roll crusher to realize crushing, injecting the crushed raw materials into a vibrating screen to realize screening, injecting the raw materials left in the vibrating screen into the double-roll crusher again to realize crushing, injecting the raw materials passing through the vibrating screen into a ball mill to realize ball milling treatment, and controlling the time to be 10-20 minutes;

s4, placing the raw materials collected in the step S3 into a storage hopper, placing a batching vehicle at the lower end of the storage hopper, conveying the raw materials into a kneading pot through the batching vehicle, adding ash powder, volatile powder, sulfur, water and a binder into the kneading pot at one time, raising the temperature inside the kneading pot to 400 ℃ of 200 plus materials, and controlling the stirring time to be 44-56 minutes;

s5, after the step S4 is completed, the raw materials in the kneading pot are cooled and then transferred to a forming machine to realize extrusion or die pressing, and the raw materials are extruded and formed into a certain shape and size;

s6, after the extrusion forming in the S5 step is realized, roasting the raw materials is realized;

and S7, after the step S6 is completed, graphitizing the product.

Preferably, the binder is specifically asphalt and spongy raw petroleum coke, and the weight ratio of the asphalt to the spongy raw petroleum coke is 1: 1.

Preferably, the step S6 of firing is to load the raw materials into a firing furnace, heat the raw materials for 5-8 hours at 2700-.

Preferably, the graphitization treatment of the raw material is realized after the step S6 is completed, specifically, the raw material is placed into a resistance furnace, the temperature is controlled at 2100 ℃ to 2400 ℃, the heat is preserved for 2 to 3 hours, and the cooling treatment is realized after the processing is completed.

Preferably, after the processing is finished, the raw materials are flattened and exposed to the air, so that the natural cooling treatment is realized.

Preferably, after the step S7 is completed, the cooled product is placed on a machine tool to realize the shape processing of the product, so as to achieve more precise dimension.

The graphite recarburizing agent and the preparation method thereof provided by the invention have the beneficial effects that: the graphite recarburizer and the preparation method thereof can effectively mix carbon elements in different substances through multiple steps, reduce the content of sulfur, effectively improve the content of carbon in the product, and simultaneously realize uniform treatment on the size and the shape of the product.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.