Coke quality improvement synergist and its preparation and use method

Abstract

The invention discloses a coke quality-improving synergist, whose components and mass percentages are: 0.1-3.0% of succinic acid, 0.1-5.0% of suberic acid, 0.1-10.0% of N-acyl glutamate, cationic 0.1-15% cellulose, 0.1-20.0% titanium concentrate powder, 10.0-35.0% instant boron, 30.0-55.0% boron trioxide. It also discloses its preparation method: (1) weighing each component according to the mass percentage of each component; (2) mixing, heating and dehumidifying each weighed component to obtain the product. Also disclosed is a method for using the aforementioned coke quality-enhancing synergist: the quality-enhancing synergist is formulated into an aqueous solution with a mass concentration of 1.0-12.0%, and the aqueous solution is sprayed on the coke at an injection rate of 1.0-5.0% of the coke weight . The synergist of the invention can not only save a large amount of coke quenching water resources, but also can significantly improve coke fragmentation and enhance the hot strength of coke.

Description

technical field [0001] The invention belongs to the field of coking new technologies, and in particular relates to a coke quality-improving synergist and a preparation and use method thereof. Background technique [0002] Since 2000, Shougang Jingtang 5500m 3 A batch of large-scale blast furnaces represented by blast furnaces have been put into operation one after another in China, with 4000m2 3 The above-mentioned large-scale blast furnaces have reached 22, and the large-scale blast furnace has become a future development trend. With the large-scale blast furnace and the intensification of smelting, the load on coke in the blast furnace has increased from below 4.0 to 6.0, and the working conditions of coke have deteriorated significantly. After the coke reaches the lower part of the furnace shaft, due to the high temperature thermal stress, gasification corrosion, alkali metal, etc., the thermal strength decreases, the particle size becomes smaller, and the powder increa...

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the publication number CN101082008A introduces "a coke passivator containing rare earth elements of the lanthanum series and its use method", which uses borax, wollastonite, rare earth co-abrasives of the lanthanum series and 60% to 90% boric acid Mix, add water and stir, and finally blend and stir with carboxymethyl cellulose. The passivator is expensive and the solution is viscous, which is not conducive to industrial implementation

The Chinese invention patent with the publication number CN102041129 introduces "a coke passivator containing trace additives and its preparation and use method", using 20-80% boric acid, 15-70% inorganic additives, and 0% active additives. ~15%, trace additive 0.1~5%, then mix and ball mill for 1~3 hours, then dissolve into water to make emulsion; this process is too complicated, not only increases the ash content of coke, but also increases the production cost, It is also not conducive to industrial promotion and application

There are also some patented technologies about coke passivators, which have different defects and limitations in terms of preparation process, raw material cost and implementation methods.

Images