Method for producing carbon intermediate by using ball pressing process

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...

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 the above problems be alleviated, but at the cost of high strength, high energy consumption, high pollution, and high cost, they have taken a development path that treats the symptoms but not the root cause, which eventually leads to long-term low prices of Chinese carbon materials and products in the international market. The price is hovering; the price difference between China's petroleum coke raw materials and similar petroleum coke raw materials at the international advanced level is up to 10 times, and it has been in the state of "high quality and low price" for a long time