Formed coke for closed calcium carbide production mainly prepared from semi-coke powder

Abstract

The invention discloses a formed coke for closed calcium carbide production mainly prepared from semi-coke powder, which is produced by using a main material semi-coke powder with the fixed carbon content of not less than 80%, an auxiliary material gas fat coal or coke and an adhesive for reinforcing and bonding the semi-coke powder. The production method comprises the following steps: uniformly mixing the main material and auxiliary material in a stirrer, adding the adhesive liquid into the stirred raw and auxiliary materials according to the proportion of the semi-coke powder and adhesive, continuing stirring until the mixture can not be sticky to the hand when being grasped by the hand, and forming the mixture in a forming machine, wherein the mechanical strength of the wet formed coal is 40-60N, and the formed coal can not become flat or scattered after freely falling to an iron plate from a 2m height; sending the formed coal with the degree of perfection of 98% above into a pyrolyzing furnace; and pyrolyzing under closed oxygen conditions, thereby obtaining the formed coke for closed calcium carbide production mainly prepared from semi-coke powder. The formed coke for closed calcium carbide production mainly prepared from semi-coke powder greatly optimizes the use of the semi-coke powder, enhances the market benefit value of the semi-coke powder, saves the coke resources, greatly lowers the cost of the calcium carbide production industry, and has obvious economic benefit and social benefit.

Description

technical field [0001] The invention relates to the field of molded coke for calcium carbide production, in particular to a molded coke used in closed calcium carbide production with semi-coke powder as the main raw material and a preparation method thereof. Background technique [0002] Semi-coke, semi-coke is made of high-quality Jurassic clean coal abundant in Shenfu Coalfield or high-quality coal similar to Shenfu long-flame coal (such as lean coal, weakly caking coal, etc.), as a new type of carbon The material, with its characteristics of high fixed carbon, high specific resistance, high chemical resistance, low ash content, low aluminum, low sulfur and low phosphorus, is widely used in calcium carbide, ferroalloy, ferrosilicon and silicon carbide to gradually replace metallurgical coke The production of such products has become an irreplaceable carbon material. [0003] Semi-coke (also known as semi-coke), the structure is required to be massive, the particle size is...

AI Technical Summary

Problems solved by technology

[0003]Semi-coke (also known as semi-coke), the structure is required to be massive, the particle size is generally above 2cm, the color is light black, and the carbon particles are extremely porous. Large surface area, light specific gravity, poor strength, more than 2cm is extremely versatile, less than 2m is called semi-coke powder, semi-coke powder is a high-quality coal type, and the output is huge in the production area. It cannot be properly optimized and utilized, so it can only be given away or sold at a price much lower than that of ordinary anthracite, which greatly wastes high-quality resources