Coke powder binder, coke balls suitable for production in closed calcium carbide furnaces and preparation method thereof, method for producing calcium carbide in closed calcium carbide furnaces

An adhesive and calcium carbide furnace technology, which is applied in the directions of starch adhesives, adhesive types, polymer adhesive additives, etc. There are no problems such as actual economic value when the proportion is low, and the effect of simple pressing process and low cost of ball production is achieved.

Active Publication Date: 2020-06-16
黄元金
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The production of calcium carbide has very strict requirements on the physical and chemical properties of raw coke. In order to improve the utilization value of the undersieve, many enterprises tried to mix coke powder and binder and then reuse them. At present, there are regenerated coke Balls can be used for the successful reporting of yellow phosphorus production, but all because the coke ball index cannot meet the production requirements of calcium carbide, especially the thermal stability and compressive strength in the hot state cannot meet the requirements of calcium carbide production process, which has a great impact on calcium carbide production , or the proportion of blending is too low and has no real economic value to give up

Method used

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  • Coke powder binder, coke balls suitable for production in closed calcium carbide furnaces and preparation method thereof, method for producing calcium carbide in closed calcium carbide furnaces
  • Coke powder binder, coke balls suitable for production in closed calcium carbide furnaces and preparation method thereof, method for producing calcium carbide in closed calcium carbide furnaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare the focal sphere as follows:

[0040] (1) Feeding coke powder and coke powder binder according to the ratio of 100:3 to obtain a mixture; the properties of the coke powder: ash content 12.4%, volatile matter 3.6%, fixed carbon 84%, average particle size 3.7mm; The coke powder binder consists of the following components: 60% corn starch, 20% closed electrode paste, 10% petroleum coke, 5% coal tar, and 5% carburant.

[0041] (2) Use a vertical mixer to fully stir the mixture, add water to the mixture while stirring to humidify the mixture, the mass ratio of the mixture to water is 100:16, and then heat the humidified material to 80 ℃, to obtain the material to be pressed.

[0042] (3) Press the material to be pressed into shape with a briquetting machine, and the pressing pressure is 0.4 MPa to obtain a molding material, and the particle size of the molding material is about 34 mm.

[0043] (4) The molded material is dried to a water content of 1.0% by using hot...

Embodiment 2

[0046] Prepare the focal sphere as follows:

[0047] (1) Feeding coke powder and coke powder binder according to the ratio of 100:3.3 to obtain a mixture; the properties of the coke powder: 12.4% ash content, 3.6% volatile matter, 84% fixed carbon, and an average particle size of 3.7mm; The coke powder binder is composed of the following components: 64% corn starch, 18% closed electrode paste, 9% petroleum coke, 4% coal tar, and 5% carburant.

[0048] (2) Use a vertical mixer to fully stir the mixture, add water to the mixture while stirring to humidify the mixture, the mass ratio of the mixture to water is 100:20, and then heat the humidified material to 65 ℃, to obtain the material to be pressed.

[0049] (3) The material to be pressed is pressed into shape with a briquetting machine, and the pressing pressure is 0.5 MPa to obtain a molding material, and the particle size of the molding material is about 40 mm.

[0050] (4) The molded material is dried to a moisture conten...

Embodiment 3

[0053] Prepare the focal sphere as follows:

[0054] (2) Feeding coke powder and coke powder binder according to the ratio of 100:3.5 to obtain a mixture; the properties of the coke powder: 12.4% ash content, 3.6% volatile matter, 84% fixed carbon, and an average particle size of 3.7mm; The coke powder binder is composed of the following components: cornstarch 56%, closed electrode paste 22%, petroleum coke 10%, coal tar 6%, carburant 6%.

[0055] (2) Use a vertical mixer to fully stir the mixture, and add water to the mixture while stirring to humidify the mixture. The mass ratio of the mixture to water is 100:15, and then the humidified material is heated to 70 ℃, to obtain the material to be pressed.

[0056] (3) The material to be pressed is pressed into shape with a briquetting machine, and the pressing pressure is 0.3 MPa to obtain a molding material, and the particle size of the molding material is about 18 mm.

[0057] (4) The molded material is dried to a moisture c...

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Abstract

The invention discloses a coke powder adhesive, which is prepared from corn starch, a closed electrode paste, petroleum coke, coal tar and a carburant according to a certain proportion. The inventionalso discloses a method for preparing a focal sphere through the coke powder adhesive. The method comprises the following steps of a, feeding coke powder and the coke powder adhesive according to theproportion; b, humidifying and heating to the control standards; c, pressing for forming; d, drying. The invention also discloses a method for producing calcium carbide through a closed calcium carbide furnace. The method is characterized by doping the focal sphere provided by the invention, wherein the doping amount accounts for 50 to 60 percent of the total mass of a drawing-up carbon material.The coke powder adhesive, the method for preparing the focal sphere through the coke powder adhesive, and the method for producing the calcium carbide through the closed calcium carbide furnace provided by the invention have the advantages that (1) the prepared focal sphere has little influence or no influence on fixed carbon, volatiles and ash content of the processed raw materials, the granularity, the cold strength, the heat strength and the water resistance of the obtained focal sphere can completely meet the requirement of calcium carbide production, and high doping proportion of the focal sphere with the total mass accounting for 50 percent or more of the total mass of the drawing-up carbon material during calcium carbide production is realized; (2) the focal sphere pressing processis simple, and the sphere manufacturing cost is low.

Description

technical field [0001] The invention relates to a calcium carbide production process, in particular to a recycling method for coke powder in calcium carbide production. Background technique [0002] The main equipment of calcium carbide production is calcium carbide furnace. The closed calcium carbide furnace means that the electrochemical reaction of calcium carbide production is carried out in a closed container, and the external air cannot enter the reactor. The production process of calcium carbide is to add coke and limestone to the furnace in a certain proportion. Inside, the three-phase electrode is energized to generate electric heat and react to produce calcium carbide products. [0003] Coke is an important raw material for calcium carbide production and is used as a reducing agent in the furnace charge. The particle size of coke has a great influence on calcium carbide production, and the particle size is generally 15-40mm. However, during the transportation, sto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J103/02C09J11/08C01B32/942
CPCC01B32/942C09J11/08C09J103/02C08L95/00
Inventor 黄元金黄程昱坤
Owner 黄元金
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