Method for producing carbon intermediate by using ball pressing process

An intermediate and carbon technology, which is applied in the fields of powder, sponge, honeycomb, and fine particles, and can solve the problems of high strength, large amount of fine particle powder, and treating symptoms but not the root cause.

Active Publication Date: 2013-06-05
任利华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems: the pores of petroleum coke increase, and the number of pores increases; the petroleum coke loosens and becomes soft, and the strength decreases; the large particles of petroleum coke are less and less, and the amount of fine particle powder is increasing
In response to these problems, scientific researchers, after long-term unremitting efforts, research and tackle key problems, through raw material premixing; high-temperature calcination; multi-stage batching; increasing the amount of powder and coal tar pitch; Only by anaerobic roasting and other measures can

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Process for the production of low-cost carbon intermediates

[0046] (1) Raw material selection: Calcined petroleum coke is used as raw material;

[0047] (2) Particle gradation, binder selection, binder addition control

[0048] Calculated in parts by mass, particle-grade ingredients + binder = 100%;

[0049] Particle grading: adopt low-cost particle grading method;

[0050] 40-0mm natural particle size petroleum coke 92%;

[0051] Binder selection:

[0052] Select hard coal tar pitch with a softening point temperature of 106°C as the binder;

[0053] Binder adding amount control:

[0054] The amount of binder added is controlled at 8%;

[0055] (3) mixed

[0056] Using hot mixing method, put 40-0mm natural particle size petroleum coke into the mixer, heat the material to reach 150-175°C, then add hard coal tar pitch binder with a softening point temperature of 106°C, and mix together for 2-30 minutes;

[0057] (4) Pressure ball

[0058] Adjust the line pressu...

Embodiment 2

[0062] Production method of carbon intermediate for prebaked anode

[0063] (1) Selection of raw materials: use calcined petroleum coke for the production of prebaked anodes; waste products or residues of graphitized electrodes are used as raw materials;

[0064] (2) Particle gradation, binder selection, binder addition control

[0065] Calculated in parts by mass, particle-grade ingredients + binder = 100%;

[0066] Particle grading: adopt low-cost particle grading method;

[0067] 72% petroleum coke with natural particle size of 35-0mm;

[0068] 0.1-0mm graphitized electrode waste or residual electrode powder 1%;

[0069] 0.1-0mm petroleum coke powder 15%;

[0070] Binder selection:

[0071] Select hard coal tar pitch with a softening point temperature of 105°C as the binder;

[0072] Binder adding amount control:

[0073] The amount of binder added is controlled at 12%;

[0074] (3) mixed

[0075] Using the hot mixing method, put the material after particle grading...

Embodiment 3

[0081] Production method of carbon intermediate for graphitized electrode

[0082] (1) Selection of raw materials: use calcined petroleum coke for graphitized electrode production; graphitized electrode forming waste (containing 23% coal tar pitch binder); graphitized electrode residue; natural flake graphite as raw material;

[0083] (2) Particle gradation, binder selection, binder addition control

[0084] Calculated in parts by mass, particle-grade ingredients + binder = 100%;

[0085] Particle grading: adopt low-cost particle grading method;

[0086] 35-0mm calcined petroleum coke 62%;

[0087] 35-0mm graphitized electrode forming waste blank (containing 23% coal tar pitch binder) 10%;

[0088] 2~0mm natural flake graphite 3%;

[0089] 0.1-0mm graphitized electrode residue powder 3%;

[0090] 0.1-0mm calcined petroleum coke powder 12%;

[0091] Binder selection:

[0092] Select hard coal tar pitch with a softening point temperature of 110°C as the binder;

[0093] ...

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Abstract

The invention relates to a method for producing a carbon intermediate by using a ball pressing process. The method is characterized in that at least one of calcined petroleum coke, pitch coke, electrically calcined coal, metallurgical coke, natural graphite, synthetic graphite, carbon product return scrap and carbon product reclaimed material is used as the material of the carbon intermediate. The production method comprises the steps of selecting raw materials, carrying out grain composition, selecting a binding agent, controlling the addition of the binding agent, mixing or kneading and pressing balls to obtain the carbon intermediate. The carbon intermediate has a shape of sphere, has uniformly and directionally arranged carbons, is a carbon green body of anisotropy, and has plasticity when the temperature is higher than the softening temperature of the binding agent, and the volume density is 1.65-1.80g/cm<3>. The high density and anisotropy of the carbon intermediate are realized with the granularity of the supplied materials maintained.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and belongs to a method for producing carbon intermediates from carbon materials and their raw materials, in particular to a sponge-like, honeycomb-like, fine-grained, powdery; scale-like carbon material and its raw materials, which are produced by pressing balls Process for producing carbon intermediates. Background technique [0002] Petroleum coke is the residual product of the last process of petroleum refining. With the development of the oil refining industry and the improvement of fine chemical technology, more high value-added chemical products can be extracted from each ton of petroleum, resulting in a large amount of useful components in the petroleum residue petroleum coke. reduce. That is to say, the scientific and technological progress of petrochemical enterprises has created huge appreciation space for petrochemical industry and created more value for society, but it has...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B32/05
Inventor 任利华王橙橙
Owner 任利华
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